Mostly cloudy
Feels like 30°C
Wind direction west
Gusts 18 km/h
Humidity 76%
Cloud cover 65%
Pressure 1014 hPa
Now · 1:34 PM
Wellesley Weather & Hourly Forecast
Canada · Ontario
27°C
Mostly cloudy
Feels like: 30°C
💧 Humidity 76%
🌡 Pressure 1014 hPa
💨 Wind 14 km/h
👁 Visibility 10.0 km
☁ Clouds 65%
☀️ UV index 7.3 · High
🌅 Sunrise 6:46 AM
🌇 Sunset 7:59 PM
Hourly Forecast for Wellesley
Today
Mostly cloudy
Partly cloudy
Feels like 33°C
Wind direction west
Gusts 13 km/h
Humidity 70%
Cloud cover 39%
Pressure 1013 hPa
Light rain
Feels like 25°C
Wind direction northwest
Gusts 0 km/h
Humidity 81%
Cloud cover 45%
Pressure 1013 hPa
Light rain
Feels like 23°C
Wind direction southeast
Gusts 13 km/h
Humidity 93%
Cloud cover 100%
Pressure 1014 hPa
Tomorrow
Light rain
Feels like 20°C
Wind direction southeast
Gusts 19 km/h
Humidity 96%
Cloud cover 99%
Pressure 1014 hPa
Overcast night
Feels like 20°C
Wind direction southeast
Gusts 10 km/h
Humidity 98%
Cloud cover 100%
Pressure 1014 hPa
Overcast
Feels like 21°C
Wind direction west
Gusts 21 km/h
Humidity 96%
Cloud cover 100%
Pressure 1015 hPa
Mostly cloudy
Feels like 26°C
Wind direction west
Gusts 31 km/h
Humidity 79%
Cloud cover 77%
Pressure 1015 hPa
Overcast
Feels like 30°C
Wind direction west
Gusts 22 km/h
Humidity 67%
Cloud cover 88%
Pressure 1014 hPa
Moderate rain
Feels like 34°C
Wind direction west
Gusts 15 km/h
Humidity 79%
Cloud cover 100%
Pressure 1012 hPa
Heavy rain
Feels like 23°C
Wind direction north
Gusts 40 km/h
Humidity 96%
Cloud cover 100%
Pressure 1011 hPa
Overcast night
Feels like 22°C
Wind direction west
Gusts 10 km/h
Humidity 95%
Cloud cover 100%
Pressure 1012 hPa
Thursday
Mostly cloudy night
Feels like 20°C
Wind direction south
Gusts 4 km/h
Humidity 96%
Cloud cover 63%
Pressure 1012 hPa
Partly cloudy night
Feels like 19°C
Wind direction northwest
Gusts 8 km/h
Humidity 96%
Cloud cover 31%
Pressure 1013 hPa
Light rain
Feels like 19°C
Wind direction west
Gusts 16 km/h
Humidity 96%
Cloud cover 35%
Pressure 1014 hPa
Partly cloudy
Feels like 24°C
Wind direction northwest
Gusts 14 km/h
Humidity 83%
Cloud cover 31%
Pressure 1013 hPa
Today
Mostly cloudy
Feels like 30°C
Wind direction westGusts 18 km/h
Humidity 76%Cloud cover 65%Pressure 1014 hPa
Mostly cloudy
Feels like 30°C
Wind direction westGusts 17 km/h
Humidity 74%Cloud cover 54%Pressure 1014 hPa
Partly cloudy
Feels like 32°C
Wind direction westGusts 16 km/h
Humidity 72%Cloud cover 42%Pressure 1014 hPa
Partly cloudy
Feels like 33°C
Wind direction westGusts 13 km/h
Humidity 70%Cloud cover 39%Pressure 1013 hPa
Partly cloudy
Feels like 34°C
Wind direction westGusts 10 km/h
Humidity 73%Cloud cover 47%Pressure 1013 hPa
Partly cloudy
Feels like 30°C
Wind direction westGusts 4 km/h
Humidity 77%Cloud cover 36%Pressure 1013 hPa
Light rain
Feels like 25°C
Wind direction northwestGusts 0 km/h
Humidity 81%Cloud cover 45%Pressure 1013 hPa
Light rain
Feels like 24°C
Wind direction southGusts 1 km/h
Humidity 83%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 24°C
Wind direction southGusts 6 km/h
Humidity 88%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 23°C
Wind direction southeastGusts 13 km/h
Humidity 93%Cloud cover 100%Pressure 1014 hPa
Tomorrow
Light rain
Feels like 22°C
Wind direction southeastGusts 25 km/h
Humidity 96%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 22°C
Wind direction southeastGusts 18 km/h
Humidity 96%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 20°C
Wind direction southeastGusts 19 km/h
Humidity 96%Cloud cover 99%Pressure 1014 hPa
Light rain
Feels like 20°C
Wind direction southeastGusts 20 km/h
Humidity 97%Cloud cover 100%Pressure 1014 hPa
Overcast night
Feels like 20°C
Wind direction southeastGusts 16 km/h
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Overcast night
Feels like 20°C
Wind direction southeastGusts 10 km/h
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 20°C
Wind direction southeastGusts 9 km/h
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 21°C
Wind direction southGusts 9 km/h
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 21°C
Wind direction westGusts 21 km/h
Humidity 96%Cloud cover 100%Pressure 1015 hPa
Overcast
Feels like 22°C
Wind direction westGusts 24 km/h
Humidity 91%Cloud cover 100%Pressure 1015 hPa
Mostly cloudy
Feels like 25°C
Wind direction westGusts 33 km/h
Humidity 84%Cloud cover 65%Pressure 1015 hPa
Mostly cloudy
Feels like 26°C
Wind direction westGusts 31 km/h
Humidity 79%Cloud cover 77%Pressure 1015 hPa
Mostly cloudy
Feels like 29°C
Wind direction westGusts 24 km/h
Humidity 70%Cloud cover 83%Pressure 1015 hPa
Overcast
Feels like 29°C
Wind direction southwestGusts 19 km/h
Humidity 67%Cloud cover 86%Pressure 1014 hPa
Overcast
Feels like 30°C
Wind direction westGusts 22 km/h
Humidity 67%Cloud cover 88%Pressure 1014 hPa
Overcast
Feels like 30°C
Wind direction southwestGusts 21 km/h
Humidity 68%Cloud cover 100%Pressure 1013 hPa
Light rain
Feels like 34°C
Wind direction southwestGusts 22 km/h
Humidity 80%Cloud cover 100%Pressure 1013 hPa
Moderate rain
Feels like 34°C
Wind direction westGusts 15 km/h
Humidity 79%Cloud cover 100%Pressure 1012 hPa
Moderate rain
Feels like 32°C
Wind direction westGusts 10 km/h
Humidity 85%Cloud cover 100%Pressure 1012 hPa
Heavy rain
Feels like 25°C
Wind direction northeastGusts 41 km/h
Humidity 96%Cloud cover 100%Pressure 1009 hPa
Heavy rain
Feels like 23°C
Wind direction northGusts 40 km/h
Humidity 96%Cloud cover 100%Pressure 1011 hPa
Moderate rain
Feels like 23°C
Wind direction southGusts 23 km/h
Humidity 96%Cloud cover 100%Pressure 1013 hPa
Moderate rain
Feels like 22°C
Wind direction southeastGusts 12 km/h
Humidity 98%Cloud cover 100%Pressure 1013 hPa
Overcast night
Feels like 22°C
Wind direction westGusts 10 km/h
Humidity 95%Cloud cover 100%Pressure 1012 hPa
Thursday
Light rain
Feels like 22°C
Wind direction southwestGusts 4 km/h
Humidity 94%Cloud cover 86%Pressure 1012 hPa
Mostly cloudy night
Feels like 21°C
Wind direction southwestGusts 7 km/h
Humidity 95%Cloud cover 73%Pressure 1012 hPa
Mostly cloudy night
Feels like 20°C
Wind direction southGusts 4 km/h
Humidity 96%Cloud cover 63%Pressure 1012 hPa
Mostly clear night
Feels like 19°C
Wind direction southwestGusts 3 km/h
Humidity 97%Cloud cover 13%Pressure 1012 hPa
Mostly clear night
Feels like 20°C
Wind direction northwestGusts 8 km/h
Humidity 96%Cloud cover 19%Pressure 1013 hPa
Partly cloudy night
Feels like 19°C
Wind direction northwestGusts 8 km/h
Humidity 96%Cloud cover 31%Pressure 1013 hPa
Partly cloudy night
Feels like 19°C
Wind direction northwestGusts 10 km/h
Humidity 96%Cloud cover 46%Pressure 1013 hPa
Partly cloudy
Feels like 19°C
Wind direction northGusts 16 km/h
Humidity 96%Cloud cover 42%Pressure 1012 hPa
Light rain
Feels like 19°C
Wind direction westGusts 16 km/h
Humidity 96%Cloud cover 35%Pressure 1014 hPa
Light rain
Feels like 21°C
Wind direction westGusts 16 km/h
Humidity 92%Cloud cover 15%Pressure 1014 hPa
Partly cloudy
Feels like 22°C
Wind direction westGusts 17 km/h
Humidity 88%Cloud cover 31%Pressure 1014 hPa
Partly cloudy
Feels like 24°C
Wind direction northwestGusts 14 km/h
Humidity 83%Cloud cover 31%Pressure 1013 hPa
Partly cloudy
Feels like 25°C
Wind direction northwestGusts 13 km/h
Humidity 78%Cloud cover 42%Pressure 1013 hPa
Mostly cloudy
Feels like 26°C
Wind direction northwestGusts 13 km/h
Humidity 75%Cloud cover 53%Pressure 1013 hPa
Mostly cloudy
Feels like 26°C
Wind direction westGusts 18 km/h
Humidity 73%Cloud cover 61%Pressure 1013 hPa
Light rain
Feels like 25°C
Wind direction northwestGusts 21 km/h
Humidity 81%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 25°C
Wind direction westGusts 21 km/h
Humidity 84%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 25°C
Wind direction westGusts 19 km/h
Humidity 78%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 25°C
Wind direction northwestGusts 18 km/h
Humidity 82%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 23°C
Wind direction northwestGusts 17 km/h
Humidity 86%Cloud cover 100%Pressure 1013 hPa
Overcast night
Feels like 21°C
Wind direction northwestGusts 15 km/h
Humidity 88%Cloud cover 100%Pressure 1013 hPa
Light rain
Feels like 19°C
Wind direction northwestGusts 20 km/h
Humidity 89%Cloud cover 100%Pressure 1013 hPa
Light rain
Feels like 18°C
Wind direction northwestGusts 17 km/h
Humidity 88%Cloud cover 100%Pressure 1014 hPa
Overcast night
Feels like 18°C
Wind direction northGusts 11 km/h
Humidity 83%Cloud cover 100%Pressure 1014 hPa
Friday
Overcast night
Feels like 17°C
Wind direction northGusts 5 km/h
Humidity 79%Cloud cover 100%Pressure 1014 hPa
Overcast night
Feels like 16°C
Wind direction northGusts 8 km/h
Humidity 75%Cloud cover 100%Pressure 1014 hPa
Overcast night
Feels like 15°C
Wind direction northGusts 10 km/h
Humidity 75%Cloud cover 98%Pressure 1014 hPa
Clear night
Feels like 14°C
Wind direction northGusts 11 km/h
Humidity 76%Cloud cover 6%Pressure 1014 hPa
Mostly clear night
Feels like 14°C
Wind direction northGusts 10 km/h
Humidity 78%Cloud cover 13%Pressure 1014 hPa
Mostly clear night
Feels like 14°C
Wind direction northGusts 9 km/h
Humidity 78%Cloud cover 15%Pressure 1014 hPa
Mostly clear night
Feels like 14°C
Wind direction northGusts 7 km/h
Humidity 79%Cloud cover 14%Pressure 1014 hPa
Mostly sunny
Feels like 14°C
Wind direction northGusts 8 km/h
Humidity 81%Cloud cover 11%Pressure 1015 hPa
Sunny
Feels like 15°C
Wind direction northGusts 11 km/h
Humidity 83%Cloud cover 9%Pressure 1015 hPa
Sunny
Feels like 17°C
Wind direction northwestGusts 13 km/h
Humidity 79%Cloud cover 2%Pressure 1015 hPa
Mostly sunny
Feels like 19°C
Wind direction northwestGusts 17 km/h
Humidity 74%Cloud cover 20%Pressure 1015 hPa
Partly cloudy
Feels like 20°C
Wind direction northwestGusts 19 km/h
Humidity 70%Cloud cover 47%Pressure 1015 hPa
Mostly cloudy
Feels like 21°C
Wind direction northwestGusts 18 km/h
Humidity 67%Cloud cover 61%Pressure 1016 hPa
Mostly cloudy
Feels like 22°C
Wind direction northwestGusts 19 km/h
Humidity 65%Cloud cover 68%Pressure 1015 hPa
Mostly cloudy
Feels like 23°C
Wind direction northwestGusts 22 km/h
Humidity 63%Cloud cover 59%Pressure 1015 hPa
Overcast
Feels like 23°C
Wind direction northwestGusts 20 km/h
Humidity 62%Cloud cover 88%Pressure 1014 hPa
Mostly cloudy
Feels like 23°C
Wind direction northwestGusts 21 km/h
Humidity 60%Cloud cover 51%Pressure 1014 hPa
Mostly cloudy
Feels like 22°C
Wind direction northGusts 20 km/h
Humidity 66%Cloud cover 61%Pressure 1014 hPa
Mostly cloudy
Feels like 21°C
Wind direction northGusts 25 km/h
Humidity 72%Cloud cover 71%Pressure 1014 hPa
Mostly cloudy
Feels like 19°C
Wind direction northGusts 27 km/h
Humidity 79%Cloud cover 74%Pressure 1015 hPa
Mostly cloudy night
Feels like 16°C
Wind direction northGusts 30 km/h
Humidity 83%Cloud cover 62%Pressure 1015 hPa
Clear night
Feels like 14°C
Wind direction northGusts 34 km/h
Humidity 79%Cloud cover 0%Pressure 1016 hPa
Clear night
Feels like 13°C
Wind direction northGusts 28 km/h
Humidity 81%Cloud cover 0%Pressure 1016 hPa
Clear night
Feels like 13°C
Wind direction northGusts 19 km/h
Humidity 82%Cloud cover 0%Pressure 1017 hPa
Saturday
Clear night
Feels like 13°C
Wind direction northGusts 19 km/h
Humidity 83%Cloud cover 0%Pressure 1017 hPa
Clear night
Feels like 13°C
Wind direction northGusts 13 km/h
Humidity 84%Cloud cover 0%Pressure 1017 hPa
Clear night
Feels like 13°C
Wind direction northGusts 19 km/h
Humidity 84%Cloud cover 0%Pressure 1017 hPa
Clear night
Feels like 12°C
Wind direction northGusts 18 km/h
Humidity 87%Cloud cover 0%Pressure 1016 hPa
Clear night
Feels like 12°C
Wind direction northGusts 12 km/h
Humidity 89%Cloud cover 0%Pressure 1017 hPa
Clear night
Feels like 12°C
Wind direction northGusts 13 km/h
Humidity 90%Cloud cover 0%Pressure 1017 hPa
Clear night
Feels like 12°C
Wind direction northGusts 14 km/h
Humidity 91%Cloud cover 0%Pressure 1017 hPa
Sunny
Feels like 11°C
Wind direction northGusts 14 km/h
Humidity 92%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 13°C
Wind direction northGusts 19 km/h
Humidity 89%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 15°C
Wind direction northGusts 19 km/h
Humidity 82%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 17°C
Wind direction northGusts 20 km/h
Humidity 76%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 19°C
Wind direction northGusts 17 km/h
Humidity 70%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 20°C
Wind direction northGusts 15 km/h
Humidity 65%Cloud cover 0%Pressure 1018 hPa
Sunny
Feels like 20°C
Wind direction northGusts 15 km/h
Humidity 62%Cloud cover 7%Pressure 1018 hPa
In Wellesley and, more broadly, across the province of Ontario: A mix of sun and cloud is expected across the region for the rest of the day, with temperatures ranging from around 17 to 29 degrees Celsius in many areas. Winds will be primarily from the south at speeds up to 18 km/h, with gusts reaching approximately 35 km/h at times. Generally dry conditions will prevail, and no significant precipitation is anticipated. In parts of the region, the breeze may be noticeable but is not threatening. Overall, the weather will be relatively mild and comfortable into the afternoon hours.
15-Day Weather Outlook for Wellesley
TomorrowTomorrow
Heavy rain
29°/19°
💧 37 mm
💨 29 km/h
Heavy rain
29°/19°
💧 37 mm
💨 29 km/h
Daytime temperature 27°C
Feels like 29°C
Humidity 67%
Pressure 1014 hPa
Cloud cover 86%
Wind direction northeast
Gusts 41 km/h
Sunrise 6:47 AM
Sunset 7:57 PM
Thursday, Sep 3Thu Sep 3
Light rain
25°/18°
💧 2.5 mm
💨 15 km/h
Light rain
25°/18°
💧 2.5 mm
💨 15 km/h
Daytime temperature 25°C
Feels like 26°C
Humidity 75%
Pressure 1013 hPa
Cloud cover 53%
Wind direction west
Gusts 21 km/h
Sunrise 6:49 AM
Sunset 7:55 PM
Friday, Sep 4Fri Sep 4
Mostly cloudy
23°/14°
💧 None
💨 16 km/h
Mostly cloudy
23°/14°
💧 None
💨 16 km/h
Daytime temperature 23°C
Feels like 23°C
Humidity 63%
Pressure 1015 hPa
Cloud cover 59%
Wind direction northwest
Gusts 30 km/h
Sunrise 6:50 AM
Sunset 7:54 PM
Saturday, Sep 5Sat Sep 5
Mostly sunny
22°/12°
💧 None
💨 13 km/h
Mostly sunny
22°/12°
💧 None
💨 13 km/h
Daytime temperature 21°C
Feels like 21°C
Humidity 59%
Pressure 1017 hPa
Cloud cover 16%
Wind direction north
Gusts 19 km/h
Sunrise 6:51 AM
Sunset 7:52 PM
Sunday, Sep 6Sun Sep 6
Mostly cloudy
22°/13°
💧 None
💨 11 km/h
Mostly cloudy
22°/13°
💧 None
💨 11 km/h
Daytime temperature 22°C
Feels like 22°C
Humidity 63%
Pressure 1019 hPa
Cloud cover 68%
Wind direction east
Gusts 21 km/h
Sunrise 6:52 AM
Sunset 7:50 PM
Monday, Sep 7Mon Sep 7
Light rain
24°/13°
💧 0.6 mm
💨 21 km/h
Light rain
24°/13°
💧 0.6 mm
💨 21 km/h
Daytime temperature 24°C
Feels like 24°C
Humidity 60%
Pressure 1016 hPa
Cloud cover 55%
Wind direction northeast
Gusts 39 km/h
Sunrise 6:53 AM
Sunset 7:48 PM
Tuesday, Sep 8Tue Sep 8
Light rain
11°/5°
💧 4.0 mm
💨 25 km/h
Light rain
11°/5°
💧 4.0 mm
💨 25 km/h
Daytime temperature 6°C
Feels like 3°C
Humidity 75%
Pressure 1021 hPa
Cloud cover 100%
Wind direction northeast
Gusts 50 km/h
Sunrise 6:54 AM
Sunset 7:46 PM
Wednesday, Sep 9Wed Sep 9
Moderate rain
13°/4°
💧 16 mm
💨 25 km/h
Moderate rain
13°/4°
💧 16 mm
💨 25 km/h
Daytime temperature 11°C
Feels like 10°C
Humidity 67%
Pressure 1016 hPa
Cloud cover 68%
Wind direction southeast
Gusts 43 km/h
Sunrise 6:55 AM
Sunset 7:45 PM
Thursday, Sep 10Thu Sep 10
Heavy rain
18°/11°
💧 17 mm
💨 13 km/h
Heavy rain
18°/11°
💧 17 mm
💨 13 km/h
Daytime temperature 18°C
Feels like 18°C
Humidity 92%
Pressure 1008 hPa
Cloud cover 100%
Wind direction northwest
Gusts 30 km/h
Sunrise 6:56 AM
Sunset 7:43 PM
Friday, Sep 11Fri Sep 11
Light rain
22°/13°
💧 0.3 mm
💨 13 km/h
Light rain
22°/13°
💧 0.3 mm
💨 13 km/h
Daytime temperature 22°C
Feels like 22°C
Humidity 68%
Pressure 1016 hPa
Cloud cover 87%
Wind direction west
Gusts 16 km/h
Sunrise 6:57 AM
Sunset 7:41 PM
Saturday, Sep 12Sat Sep 12
Light rain
21°/15°
💧 1.7 mm
💨 24 km/h
Light rain
21°/15°
💧 1.7 mm
💨 24 km/h
Daytime temperature 21°C
Feels like 22°C
Humidity 89%
Pressure 1013 hPa
Cloud cover 100%
Wind direction south
Gusts 44 km/h
Sunrise 6:58 AM
Sunset 7:39 PM
Sunday, Sep 13Sun Sep 13
Overcast
18°/10°
💧 None
💨 22 km/h
Overcast
18°/10°
💧 None
💨 22 km/h
Daytime temperature 18°C
Feels like 17°C
Humidity 65%
Pressure 1021 hPa
Cloud cover 99%
Wind direction northwest
Gusts 45 km/h
Sunrise 7:00 AM
Sunset 7:37 PM
Monday, Sep 14Mon Sep 14
Light rain
13°/9°
💧 3.5 mm
💨 13 km/h
Light rain
13°/9°
💧 3.5 mm
💨 13 km/h
Daytime temperature 13°C
Feels like 13°C
Humidity 74%
Pressure 1023 hPa
Cloud cover 100%
Wind direction northeast
Gusts 23 km/h
Sunrise 7:01 AM
Sunset 7:35 PM
Tuesday, Sep 15Tue Sep 15
Light rain
17°/8°
💧 2.6 mm
💨 23 km/h
Light rain
17°/8°
💧 2.6 mm
💨 23 km/h
Daytime temperature 17°C
Feels like 16°C
Humidity 59%
Pressure 1021 hPa
Cloud cover 44%
Wind direction north
Gusts 31 km/h
Sunrise 7:02 AM
Sunset 7:34 PM
Wednesday, Sep 16Wed Sep 16
Light rain
19°/8°
💧 0.2 mm
💨 16 km/h
Light rain
19°/8°
💧 0.2 mm
💨 16 km/h
Daytime temperature 19°C
Feels like 18°C
Humidity 60%
Pressure 1021 hPa
Cloud cover 4%
Wind direction northwest
Gusts 19 km/h
Sunrise 7:03 AM
Sunset 7:32 PM
TEMPERATURE OUTLOOK
Temperature & Weather Trends in Wellesley
AIR QUALITY FORECAST
Air Quality Forecast for Wellesley
Fair
Nearest forecast value
2:00 PM
PM2.5 Fine particles Fair 17,6µg/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 18,6µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 93,5µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 3,8µg/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 Fair 14,8µg/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 15,7µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Good 50,7µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 8,7µg/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 Fair 12,9µg/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 13,4µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 74,2µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 6,2µg/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 8,0µg/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 8,6µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Good 56,0µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 5,6µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is favorable for outdoor activities.
Good
Selected time
12:00 AM
PM2.5 Fine particles Good 2,1µg/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 2,6µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Good 53,0µg/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 favorable for outdoor activities.
UV & HEALTH
UV, Sun & Health Outlook in Wellesley
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 7,3High
🙂Fair
Tomorrow
UV 5,0Moderate
😐Moderate
Thursday
UV 7,3High
🙂Fair
Friday
UV 6,4High
🙂Fair
Saturday
UV 5,0Moderate
🙂Fair
Sunday
UV 5,0Moderate
—Unavailable
Monday
UV 5,0Moderate
—Unavailable
Hourly UV index today
2:00 PMUV 6,7
3:00 PMUV 5,6
4:00 PMUV 3,8
5:00 PMUV 2,1
6:00 PMUV 0,9
7:00 PMUV 0,1
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.
Stay hydrated
Drink water regularly, especially during physical activity or prolonged sun exposure.
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 Wellesley
Sustained wind
Max gusts
Internal PR simulation:
4.05
Population: 11,318
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Forecast data for Wellesley were last refreshed today at 1:34 PM. The current forecast period extends through 03/09/2026 at 11:00 AM. 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.