Clear night
Feels like 14°C
Wind direction southeast
Gusts 5 km/h
Humidity 80%
Cloud cover 0%
Pressure 1017 hPa
Now · 10:18 PM
Markham Weather & Hourly Forecast
Canada · Ontario
15°C
Clear night
Feels like: 15°C
💧 Humidity 79%
🌡 Pressure 1017 hPa
💨 Wind 2 km/h
👁 Visibility 37.3 km
☁ Clouds 0%
☀️ UV index 0.0 · Low
🌅 Sunrise —
🌇 Sunset —
Hourly Forecast for Markham
Today
Clear night
Tomorrow
Mostly cloudy night
Feels like 13°C
Wind direction east
Gusts 10 km/h
Humidity 86%
Cloud cover 63%
Pressure 1017 hPa
Clear night
Feels like 13°C
Wind direction southeast
Gusts 7 km/h
Humidity 84%
Cloud cover 0%
Pressure 1016 hPa
Sunny
Feels like 15°C
Wind direction southeast
Gusts 10 km/h
Humidity 81%
Cloud cover 0%
Pressure 1016 hPa
Mostly sunny
Feels like 21°C
Wind direction southeast
Gusts 21 km/h
Humidity 70%
Cloud cover 29%
Pressure 1014 hPa
Mostly sunny
Feels like 24°C
Wind direction south
Gusts 28 km/h
Humidity 66%
Cloud cover 18%
Pressure 1013 hPa
Overcast
Feels like 24°C
Wind direction southeast
Gusts 26 km/h
Humidity 73%
Cloud cover 100%
Pressure 1011 hPa
Light rain
Feels like 22°C
Wind direction southeast
Gusts 20 km/h
Humidity 94%
Cloud cover 100%
Pressure 1011 hPa
Light thunderstorms
Feels like 22°C
Wind direction southwest
Gusts 15 km/h
Humidity 98%
Cloud cover 34%
Pressure 1011 hPa
Sunday
Clear night
Feels like 20°C
Wind direction west
Gusts 17 km/h
Humidity 99%
Cloud cover 0%
Pressure 1010 hPa
Partly cloudy night
Feels like 19°C
Wind direction northwest
Gusts 20 km/h
Humidity 97%
Cloud cover 55%
Pressure 1010 hPa
Partly cloudy
Feels like 17°C
Wind direction northwest
Gusts 29 km/h
Humidity 93%
Cloud cover 50%
Pressure 1012 hPa
Partly cloudy
Feels like 20°C
Wind direction northwest
Gusts 34 km/h
Humidity 65%
Cloud cover 45%
Pressure 1013 hPa
Mostly sunny
Feels like 21°C
Wind direction west
Gusts 30 km/h
Humidity 48%
Cloud cover 25%
Pressure 1012 hPa
Partly cloudy
Feels like 21°C
Wind direction west
Gusts 37 km/h
Humidity 49%
Cloud cover 59%
Pressure 1011 hPa
Overcast night
Feels like 18°C
Wind direction northwest
Gusts 28 km/h
Humidity 66%
Cloud cover 100%
Pressure 1012 hPa
Today
Clear night
Feels like 14°C
Wind direction southeastGusts 5 km/h
Humidity 80%Cloud cover 0%Pressure 1017 hPa
Tomorrow
Clear night
Feels like 14°C
Wind direction southeastGusts 10 km/h
Humidity 83%Cloud cover 0%Pressure 1017 hPa
Mostly clear night
Feels like 13°C
Wind direction eastGusts 10 km/h
Humidity 85%Cloud cover 27%Pressure 1017 hPa
Mostly cloudy night
Feels like 13°C
Wind direction eastGusts 10 km/h
Humidity 86%Cloud cover 63%Pressure 1017 hPa
Mostly clear night
Feels like 13°C
Wind direction eastGusts 7 km/h
Humidity 86%Cloud cover 22%Pressure 1016 hPa
Clear night
Feels like 13°C
Wind direction eastGusts 8 km/h
Humidity 86%Cloud cover 0%Pressure 1016 hPa
Clear night
Feels like 13°C
Wind direction southeastGusts 7 km/h
Humidity 84%Cloud cover 0%Pressure 1016 hPa
Clear night
Feels like 13°C
Wind direction southeastGusts 7 km/h
Humidity 82%Cloud cover 0%Pressure 1016 hPa
Sunny
Feels like 13°C
Wind direction southeastGusts 7 km/h
Humidity 82%Cloud cover 0%Pressure 1016 hPa
Sunny
Feels like 15°C
Wind direction southeastGusts 10 km/h
Humidity 81%Cloud cover 0%Pressure 1016 hPa
Sunny
Feels like 18°C
Wind direction southeastGusts 14 km/h
Humidity 79%Cloud cover 0%Pressure 1015 hPa
Sunny
Feels like 20°C
Wind direction southeastGusts 18 km/h
Humidity 72%Cloud cover 0%Pressure 1015 hPa
Mostly sunny
Feels like 21°C
Wind direction southeastGusts 21 km/h
Humidity 70%Cloud cover 29%Pressure 1014 hPa
Sunny
Feels like 22°C
Wind direction southeastGusts 25 km/h
Humidity 69%Cloud cover 5%Pressure 1014 hPa
Sunny
Feels like 24°C
Wind direction southeastGusts 26 km/h
Humidity 67%Cloud cover 3%Pressure 1013 hPa
Mostly sunny
Feels like 24°C
Wind direction southGusts 28 km/h
Humidity 66%Cloud cover 18%Pressure 1013 hPa
Mostly cloudy
Feels like 25°C
Wind direction southGusts 29 km/h
Humidity 67%Cloud cover 73%Pressure 1012 hPa
Overcast
Feels like 25°C
Wind direction southGusts 28 km/h
Humidity 68%Cloud cover 97%Pressure 1011 hPa
Overcast
Feels like 24°C
Wind direction southeastGusts 26 km/h
Humidity 73%Cloud cover 100%Pressure 1011 hPa
Overcast
Feels like 23°C
Wind direction southeastGusts 25 km/h
Humidity 80%Cloud cover 99%Pressure 1011 hPa
Overcast
Feels like 23°C
Wind direction southeastGusts 23 km/h
Humidity 87%Cloud cover 100%Pressure 1011 hPa
Light rain
Feels like 22°C
Wind direction southeastGusts 20 km/h
Humidity 94%Cloud cover 100%Pressure 1011 hPa
Light rain
Feels like 22°C
Wind direction southGusts 21 km/h
Humidity 97%Cloud cover 98%Pressure 1011 hPa
Light thunderstorms
Feels like 22°C
Wind direction southwestGusts 19 km/h
Humidity 97%Cloud cover 98%Pressure 1011 hPa
Light thunderstorms
Feels like 22°C
Wind direction southwestGusts 15 km/h
Humidity 98%Cloud cover 34%Pressure 1011 hPa
Sunday
Clear night
Feels like 21°C
Wind direction southwestGusts 15 km/h
Humidity 98%Cloud cover 12%Pressure 1011 hPa
Clear night
Feels like 20°C
Wind direction southwestGusts 15 km/h
Humidity 99%Cloud cover 7%Pressure 1010 hPa
Clear night
Feels like 20°C
Wind direction westGusts 17 km/h
Humidity 99%Cloud cover 0%Pressure 1010 hPa
Clear night
Feels like 20°C
Wind direction westGusts 18 km/h
Humidity 98%Cloud cover 7%Pressure 1010 hPa
Mostly clear night
Feels like 20°C
Wind direction westGusts 19 km/h
Humidity 98%Cloud cover 22%Pressure 1010 hPa
Partly cloudy night
Feels like 19°C
Wind direction northwestGusts 20 km/h
Humidity 97%Cloud cover 55%Pressure 1010 hPa
Mostly clear night
Feels like 19°C
Wind direction northwestGusts 26 km/h
Humidity 97%Cloud cover 18%Pressure 1011 hPa
Partly cloudy
Feels like 18°C
Wind direction northwestGusts 29 km/h
Humidity 96%Cloud cover 56%Pressure 1011 hPa
Partly cloudy
Feels like 17°C
Wind direction northwestGusts 29 km/h
Humidity 93%Cloud cover 50%Pressure 1012 hPa
Sunny
Feels like 18°C
Wind direction northwestGusts 32 km/h
Humidity 87%Cloud cover 1%Pressure 1013 hPa
Sunny
Feels like 19°C
Wind direction northwestGusts 35 km/h
Humidity 76%Cloud cover 1%Pressure 1013 hPa
Partly cloudy
Feels like 20°C
Wind direction northwestGusts 34 km/h
Humidity 65%Cloud cover 45%Pressure 1013 hPa
Partly cloudy
Feels like 21°C
Wind direction northwestGusts 30 km/h
Humidity 57%Cloud cover 43%Pressure 1013 hPa
Mostly sunny
Feels like 21°C
Wind direction northwestGusts 30 km/h
Humidity 50%Cloud cover 17%Pressure 1012 hPa
Mostly sunny
Feels like 21°C
Wind direction westGusts 30 km/h
Humidity 48%Cloud cover 25%Pressure 1012 hPa
Mostly cloudy
Feels like 21°C
Wind direction westGusts 36 km/h
Humidity 47%Cloud cover 82%Pressure 1012 hPa
Mostly sunny
Feels like 21°C
Wind direction westGusts 37 km/h
Humidity 47%Cloud cover 23%Pressure 1011 hPa
Partly cloudy
Feels like 21°C
Wind direction westGusts 37 km/h
Humidity 49%Cloud cover 59%Pressure 1011 hPa
Overcast
Feels like 20°C
Wind direction northwestGusts 34 km/h
Humidity 55%Cloud cover 98%Pressure 1012 hPa
Overcast
Feels like 19°C
Wind direction northwestGusts 28 km/h
Humidity 60%Cloud cover 100%Pressure 1012 hPa
Overcast night
Feels like 18°C
Wind direction northwestGusts 28 km/h
Humidity 66%Cloud cover 100%Pressure 1012 hPa
Light rain
Feels like 16°C
Wind direction northwestGusts 26 km/h
Humidity 85%Cloud cover 100%Pressure 1013 hPa
Light rain
Feels like 15°C
Wind direction westGusts 30 km/h
Humidity 85%Cloud cover 27%Pressure 1014 hPa
Clear night
Feels like 13°C
Wind direction northwestGusts 40 km/h
Humidity 87%Cloud cover 4%Pressure 1015 hPa
Monday
Clear night
Feels like 12°C
Wind direction northwestGusts 38 km/h
Humidity 90%Cloud cover 2%Pressure 1015 hPa
Clear night
Feels like 11°C
Wind direction northwestGusts 32 km/h
Humidity 89%Cloud cover 3%Pressure 1015 hPa
Clear night
Feels like 10°C
Wind direction northwestGusts 36 km/h
Humidity 88%Cloud cover 3%Pressure 1016 hPa
Clear night
Feels like 10°C
Wind direction northwestGusts 35 km/h
Humidity 90%Cloud cover 4%Pressure 1016 hPa
Clear night
Feels like 10°C
Wind direction northwestGusts 31 km/h
Humidity 90%Cloud cover 12%Pressure 1017 hPa
Clear night
Feels like 10°C
Wind direction northwestGusts 29 km/h
Humidity 92%Cloud cover 2%Pressure 1018 hPa
Clear night
Feels like 9°C
Wind direction northwestGusts 27 km/h
Humidity 93%Cloud cover 2%Pressure 1019 hPa
Sunny
Feels like 9°C
Wind direction northwestGusts 24 km/h
Humidity 93%Cloud cover 2%Pressure 1020 hPa
Sunny
Feels like 10°C
Wind direction northwestGusts 23 km/h
Humidity 90%Cloud cover 0%Pressure 1021 hPa
Partly cloudy
Feels like 15°C
Wind direction northGusts 29 km/h
Humidity 44%Cloud cover 43%Pressure 1022 hPa
Clear night
Feels like 12°C
Wind direction northGusts 16 km/h
Humidity 62%Cloud cover 2%Pressure 1023 hPa
Mostly clear night
Feels like 10°C
Wind direction northeastGusts 15 km/h
Humidity 73%Cloud cover 17%Pressure 1024 hPa
Tuesday
Partly cloudy night
Feels like 9°C
Wind direction eastGusts 14 km/h
Humidity 70%Cloud cover 61%Pressure 1024 hPa
Overcast night
Feels like 10°C
Wind direction southeastGusts 19 km/h
Humidity 72%Cloud cover 100%Pressure 1024 hPa
Overcast
Feels like 12°C
Wind direction southGusts 23 km/h
Humidity 74%Cloud cover 100%Pressure 1024 hPa
Overcast
Feels like 14°C
Wind direction southGusts 46 km/h
Humidity 63%Cloud cover 96%Pressure 1024 hPa
Overcast
Feels like 16°C
Wind direction southGusts 49 km/h
Humidity 59%Cloud cover 99%Pressure 1023 hPa
Partly cloudy
Feels like 16°C
Wind direction southGusts 50 km/h
Humidity 54%Cloud cover 75%Pressure 1021 hPa
Moderate rain
Feels like 17°C
Wind direction southGusts 47 km/h
Humidity 66%Cloud cover 69%Pressure 1021 hPa
Moderate rain
Feels like 16°C
Wind direction southwestGusts 31 km/h
Humidity 89%Cloud cover 99%Pressure 1022 hPa
Wednesday
Overcast night
Feels like 16°C
Wind direction southwestGusts 25 km/h
Humidity 94%Cloud cover 100%Pressure 1022 hPa
Overcast night
Feels like 17°C
Wind direction southwestGusts 25 km/h
Humidity 96%Cloud cover 99%Pressure 1022 hPa
Overcast
Feels like 18°C
Wind direction northwestGusts 13 km/h
Humidity 95%Cloud cover 100%Pressure 1024 hPa
Mostly cloudy
Feels like 23°C
Wind direction northGusts 23 km/h
Humidity 77%Cloud cover 94%Pressure 1025 hPa
Overcast
Feels like 25°C
Wind direction northGusts 23 km/h
Humidity 64%Cloud cover 98%Pressure 1025 hPa
Overcast
Feels like 23°C
Wind direction northGusts 23 km/h
Humidity 68%Cloud cover 98%Pressure 1024 hPa
Mostly clear night
Feels like 19°C
Wind direction northGusts 23 km/h
Humidity 84%Cloud cover 38%Pressure 1025 hPa
Partly cloudy night
Feels like 15°C
Wind direction northGusts 18 km/h
Humidity 87%Cloud cover 65%Pressure 1025 hPa
Thursday
Overcast night
Feels like 16°C
Wind direction northGusts 18 km/h
Humidity 87%Cloud cover 98%Pressure 1025 hPa
Overcast night
Feels like 17°C
Wind direction northGusts 17 km/h
Humidity 92%Cloud cover 100%Pressure 1024 hPa
Partly cloudy
Feels like 16°C
Wind direction northGusts 22 km/h
Humidity 93%Cloud cover 58%Pressure 1026 hPa
Mostly cloudy
Feels like 20°C
Wind direction northGusts 24 km/h
Humidity 65%Cloud cover 89%Pressure 1025 hPa
Overcast
Feels like 22°C
Wind direction northGusts 28 km/h
Humidity 55%Cloud cover 96%Pressure 1025 hPa
Mostly clear night
Feels like 20°C
Wind direction northGusts —
Humidity 57%Cloud cover 23%Pressure 1024 hPa
Friday
Clear night
Feels like 14°C
Wind direction northwestGusts —
Humidity 72%Cloud cover 0%Pressure 1025 hPa
Sunny
Feels like 11°C
Wind direction northGusts —
Humidity 80%Cloud cover 0%Pressure 1026 hPa
Sunny
Feels like 10°C
Wind direction northeastGusts —
Humidity 75%Cloud cover 0%Pressure 1026 hPa
Clear night
Feels like 19°C
Wind direction southGusts —
Humidity 47%Cloud cover 0%Pressure 1025 hPa
Saturday
Partly cloudy night
Feels like 14°C
Wind direction southGusts —
Humidity 77%Cloud cover 51%Pressure 1023 hPa
Mostly cloudy
Feels like 11°C
Wind direction southwestGusts —
Humidity 76%Cloud cover 90%Pressure 1021 hPa
Overcast
Feels like 12°C
Wind direction southeastGusts —
Humidity 84%Cloud cover 100%Pressure 1019 hPa
Overcast night
Feels like 16°C
Wind direction southeastGusts —
Humidity 55%Cloud cover 100%Pressure 1016 hPa
Sunday
Overcast night
Feels like 14°C
Wind direction southeastGusts —
Humidity 85%Cloud cover 100%Pressure 1013 hPa
Sunny
Feels like 12°C
Wind direction northeastGusts —
Humidity 86%Cloud cover 0%Pressure 1012 hPa
Mostly sunny
Feels like 11°C
Wind direction northGusts —
Humidity 92%Cloud cover 11%Pressure 1013 hPa
Overcast night
Feels like 20°C
Wind direction northeastGusts —
Humidity 55%Cloud cover 98%Pressure 1013 hPa
Monday
Overcast night
Feels like 17°C
Wind direction northGusts —
Humidity 76%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 11°C
Wind direction northeastGusts —
Humidity 68%Cloud cover 100%Pressure 1016 hPa
Overcast
Feels like 8°C
Wind direction northeastGusts —
Humidity 64%Cloud cover 100%Pressure 1018 hPa
Light rain
Feels like 10°C
Wind direction northeastGusts —
Humidity 93%Cloud cover 100%Pressure 1019 hPa
Tuesday
Partly cloudy night
Feels like 9°C
Wind direction eastGusts —
Humidity 76%Cloud cover 56%Pressure 1017 hPa
Light rain
Feels like 6°C
Wind direction eastGusts —
Humidity 70%Cloud cover 100%Pressure 1018 hPa
Moderate rain
Feels like 5°C
Wind direction eastGusts —
Humidity 94%Cloud cover 100%Pressure 1015 hPa
Moderate rain
Feels like 9°C
Wind direction eastGusts —
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Wednesday
Very heavy rain
Feels like 9°C
Wind direction eastGusts —
Humidity 99%Cloud cover 100%Pressure 1012 hPa
Overcast
Feels like 16°C
Wind direction southeastGusts —
Humidity 100%Cloud cover 100%Pressure 1011 hPa
Overcast
Feels like 15°C
Wind direction westGusts —
Humidity 99%Cloud cover 100%Pressure 1013 hPa
Mostly clear night
Feels like 22°C
Wind direction westGusts —
Humidity 65%Cloud cover 36%Pressure 1013 hPa
Thursday
Mostly cloudy night
Feels like 16°C
Wind direction northGusts —
Humidity 92%Cloud cover 95%Pressure 1014 hPa
Sunny
Feels like 12°C
Wind direction northwestGusts —
Humidity 96%Cloud cover 2%Pressure 1015 hPa
Mostly sunny
Feels like 12°C
Wind direction westGusts —
Humidity 93%Cloud cover 11%Pressure 1016 hPa
Partly cloudy night
Feels like 18°C
Wind direction westGusts —
Humidity 73%Cloud cover 64%Pressure 1015 hPa
Friday
Mostly cloudy night
Feels like 13°C
Wind direction northwestGusts —
Humidity 90%Cloud cover 83%Pressure 1016 hPa
Partly cloudy
Feels like 10°C
Wind direction northwestGusts —
Humidity 90%Cloud cover 47%Pressure 1015 hPa
Mostly sunny
Feels like 8°C
Wind direction northwestGusts —
Humidity 94%Cloud cover 16%Pressure 1016 hPa
Overcast night
Feels like 12°C
Wind direction northwestGusts —
Humidity 68%Cloud cover 100%Pressure 1017 hPa
Saturday
Partly cloudy night
Feels like 11°C
Wind direction northwestGusts —
Humidity 80%Cloud cover 55%Pressure 1019 hPa
Sunny
Feels like 8°C
Wind direction northGusts —
Humidity 93%Cloud cover 0%Pressure 1021 hPa
Sunny
Feels like 7°C
Wind direction northGusts —
Humidity 95%Cloud cover 4%Pressure 1023 hPa
In Markham and, more broadly, across the province of Ontario: The evening will see mainly clear skies across the region, with temperatures gradually falling to between 16 and 21 degrees Celsius. In many areas, conditions remain dry, and no significant precipitation is expected overnight. Winds are generally light from the east, with speeds reaching up to 12 km/h and gusts possibly hitting around 21 km/h. These gentle breezes are unlikely to cause any hazards, but they may bring a slight cooling effect as the night progresses. Overall, tonight is expected to be calm and mild, with comfortable conditions persisting into the early hours.
15-Day Weather Outlook for Markham
TomorrowTomorrow
Mostly sunny
24°/13°
💧 None
💨 12 km/h
Mostly sunny
24°/13°
💧 None
💨 12 km/h
Daytime temperature 15°C
Feels like 15°C
Humidity 78%
Pressure 1015 hPa
Cloud cover 26%
Wind direction southeast
Gusts 29 km/h
Sunrise —
Sunset —
Sunday, Sep 13Sun Sep 13
Light thunderstorms
24°/18°
💧 None
💨 18 km/h
Light thunderstorms
24°/18°
💧 None
💨 18 km/h
Daytime temperature 18°C
Feels like 17°C
Humidity 79%
Pressure 1011 hPa
Cloud cover 44%
Wind direction northwest
Gusts 37 km/h
Sunrise —
Sunset —
Monday, Sep 14Mon Sep 14
Light rain
20°/12°
💧 4.1 mm
💨 20 km/h
Light rain
20°/12°
💧 4.1 mm
💨 20 km/h
Daytime temperature 13°C
Feels like 10°C
Humidity 80%
Pressure 1017 hPa
Cloud cover 18%
Wind direction northwest
Gusts 39 km/h
Sunrise —
Sunset —
Tuesday, Sep 15Tue Sep 15
Overcast
21°/12°
💧 0.0 mm
💨 25 km/h
Overcast
21°/12°
💧 0.0 mm
💨 25 km/h
Daytime temperature 15°C
Feels like 12°C
Humidity 68%
Pressure 1023 hPa
Cloud cover 82%
Wind direction south
Gusts 50 km/h
Sunrise —
Sunset —
Wednesday, Sep 16Wed Sep 16
Light rain
25°/18°
💧 12 mm
💨 15 km/h
Light rain
25°/18°
💧 12 mm
💨 15 km/h
Daytime temperature 19°C
Feels like 20°C
Humidity 83%
Pressure 1022 hPa
Cloud cover 82%
Wind direction west
Gusts 37 km/h
Sunrise —
Sunset —
Thursday, Sep 17Thu Sep 17
Light rain
22°/17°
💧 2.7 mm
💨 17 km/h
Light rain
22°/17°
💧 2.7 mm
💨 17 km/h
Daytime temperature 17°C
Feels like 15°C
Humidity 86%
Pressure 1022 hPa
Cloud cover 74%
Wind direction northwest
Gusts 31 km/h
Sunrise —
Sunset —
Friday, Sep 18Fri Sep 18
Sunny
20°/13°
💧 None
💨 16 km/h
Sunny
20°/13°
💧 None
💨 16 km/h
Daytime temperature 13°C
Feels like 10°C
Humidity 68%
Pressure 1026 hPa
Cloud cover 0%
Wind direction northeast
Gusts —
Sunrise —
Sunset —
Saturday, Sep 19Sat Sep 19
Partly cloudy
19°/12°
💧 None
💨 12 km/h
Partly cloudy
19°/12°
💧 None
💨 12 km/h
Daytime temperature 13°C
Feels like 12°C
Humidity 73%
Pressure 1020 hPa
Cloud cover 85%
Wind direction southeast
Gusts —
Sunrise —
Sunset —
Sunday, Sep 20Sun Sep 20
Overcast
22°/13°
💧 0.6 mm
💨 12 km/h
Overcast
22°/13°
💧 0.6 mm
💨 12 km/h
Daytime temperature 13°C
Feels like 11°C
Humidity 80%
Pressure 1013 hPa
Cloud cover 52%
Wind direction north
Gusts —
Sunrise —
Sunset —
Monday, Sep 21Mon Sep 21
Light rain
18°/12°
💧 5.2 mm
💨 16 km/h
Light rain
18°/12°
💧 5.2 mm
💨 16 km/h
Daytime temperature 12°C
Feels like 8°C
Humidity 75%
Pressure 1017 hPa
Cloud cover 100%
Wind direction northeast
Gusts —
Sunrise —
Sunset —
Tuesday, Sep 22Tue Sep 22
Moderate rain
12°/10°
💧 18 mm
💨 26 km/h
Moderate rain
12°/10°
💧 18 mm
💨 26 km/h
Daytime temperature 10°C
Feels like 5°C
Humidity 84%
Pressure 1016 hPa
Cloud cover 89%
Wind direction east
Gusts —
Sunrise —
Sunset —
Wednesday, Sep 23Wed Sep 23
Very heavy rain
22°/13°
💧 23 mm
💨 21 km/h
Very heavy rain
22°/13°
💧 23 mm
💨 21 km/h
Daytime temperature 15°C
Feels like 15°C
Humidity 91%
Pressure 1012 hPa
Cloud cover 84%
Wind direction west
Gusts —
Sunrise —
Sunset —
Thursday, Sep 24Thu Sep 24
Partly cloudy
19°/13°
💧 1.3 mm
💨 10 km/h
Partly cloudy
19°/13°
💧 1.3 mm
💨 10 km/h
Daytime temperature 13°C
Feels like 12°C
Humidity 88%
Pressure 1015 hPa
Cloud cover 43%
Wind direction west
Gusts —
Sunrise —
Sunset —
Friday, Sep 25Fri Sep 25
Overcast
16°/11°
💧 1.3 mm
💨 21 km/h
Overcast
16°/11°
💧 1.3 mm
💨 21 km/h
Daytime temperature 11°C
Feels like 8°C
Humidity 86%
Pressure 1016 hPa
Cloud cover 62%
Wind direction northwest
Gusts —
Sunrise —
Sunset —
Saturday, Sep 26Sat Sep 26
Partly cloudy
14°/10°
💧 0.0 mm
💨 18 km/h
Partly cloudy
14°/10°
💧 0.0 mm
💨 18 km/h
Daytime temperature 10°C
Feels like 7°C
Humidity 89%
Pressure 1021 hPa
Cloud cover 20%
Wind direction north
Gusts —
Sunrise —
Sunset —
TEMPERATURE OUTLOOK
Temperature & Weather Trends in Markham
AIR QUALITY FORECAST
Air Quality Forecast for Markham
Fair
Nearest forecast value
11:00 PM
PM2.5 Fine particles Good 3,7µg/m³
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
PM10 Particulate matter Good 4,9µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 78,4µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 10,5µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
Fair
Selected time
12:00 AM
PM2.5 Fine particles Good 3,6µg/m³
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
PM10 Particulate matter Good 4,7µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 75,5µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 9,9µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
Good
Selected time
12:00 AM
PM2.5 Fine particles Good 5,2µg/m³
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
PM10 Particulate matter Good 5,4µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Good 58,0µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 5,7µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is favorable for outdoor activities.
Fair
Selected time
12:00 AM
PM2.5 Fine particles Good 2,0µg/m³
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
PM10 Particulate matter Good 2,2µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 70,3µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 2,6µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
Fair
Selected time
12:00 AM
PM2.5 Fine particles Good 3,2µg/m³
Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.
PM10 Particulate matter Good 5,1µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 75,5µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 10,1µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
UV & HEALTH
UV, Sun & Health Outlook in Markham
Maximum daily UV
Today, tomorrow and the following day show the maximum UV index forecast for each day.
0–2 Low
3–5 Moderate
6–7 High
8–10 Very high
11+ Extreme
Today
UV 6,0High
🙂Fair
Tomorrow
UV 6,0High
🙂Fair
Sunday
UV 5,6Moderate
🙂Fair
Monday
UV 5,6Moderate
🙂Fair
Tuesday
UV 4,0Moderate
😐Moderate
Wednesday
UV 5,0Moderate
—Unavailable
Thursday
UV 4,0Moderate
—Unavailable
Today's weather health advice
Open today's recommendations.
Strong UV exposure
Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.
Acceptable air quality
Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.
Comfortable temperature conditions
Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.
Good conditions for outdoor activities
Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.
WIND OUTLOOK
Hourly Wind Forecast for Markham
Sustained wind
Max gusts
NIGHT SKY · MARKHAM, ONTARIO
Tonight's Stargazing & Shooting Stars
Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.
100/100Best-hour score
BEST TIME TONIGHT
5:00 AM–6:00 AM
Astronomical darkness: 9:14 PM–5:14 AM
Cloud cover
0%
Real hourly forecast for the best viewing hour.
Moonlight
0%
New Moon · Moon below the horizon at the best viewing hour.
Meteor activity
September ε-Perseids
Reference ZHR 8 · Radiant 86° high at the best hour.
Estimated visible meteors
2–5/hour
Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min81%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
SEP 5–SEP 21
September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak
ACTIVE NOW
SEP 20–NOV 20
Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak
UPCOMING
OCT 2–NOV 7
OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak
UPCOMING
OCT 20–DEC 10
Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak
UPCOMING
Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.
DISCOVER WEATHER NEARBY Weather in other cities
Explore current conditions and forecasts for other locations.
Forecast data for Markham were last refreshed today at 10:18 PM. The current forecast period extends through 13/09/2026 at 8:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.