Overcast night
Feels like 16°C
Wind direction south
Gusts 2 km/h
Humidity 95%
Cloud cover 91%
Pressure 1004 hPa
Now · 9:15 PM
Caernarfon Weather & Hourly Forecast
United Kingdom · Wales · LL55 1AB
16°C
Overcast night
Feels like: 16°C
💧 Humidity 94%
🌡 Pressure 1004 hPa
💨 Wind 3 km/h
👁 Visibility 10.0 km
☁ Clouds 92%
☀️ UV index 0.0 · Low
🌅 Sunrise 6:21 AM
🌇 Sunset 8:15 PM
Hourly Forecast for Caernarfon
Today
Overcast night
Tomorrow
Mostly cloudy night
Feels like 15°C
Wind direction south
Gusts 7 km/h
Humidity 98%
Cloud cover 80%
Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction south
Gusts 21 km/h
Humidity 99%
Cloud cover 52%
Pressure 1006 hPa
Partly cloudy
Feels like 14°C
Wind direction south
Gusts 24 km/h
Humidity 98%
Cloud cover 49%
Pressure 1006 hPa
Light rain
Feels like 17°C
Wind direction south
Gusts 32 km/h
Humidity 88%
Cloud cover 56%
Pressure 1006 hPa
Light rain
Feels like 18°C
Wind direction south
Gusts 35 km/h
Humidity 77%
Cloud cover 79%
Pressure 1005 hPa
Light rain
Feels like 17°C
Wind direction south
Gusts 37 km/h
Humidity 90%
Cloud cover 100%
Pressure 1003 hPa
Light rain
Feels like 16°C
Wind direction south
Gusts 33 km/h
Humidity 91%
Cloud cover 100%
Pressure 1003 hPa
Mostly cloudy night
Feels like 13°C
Wind direction south
Gusts 17 km/h
Humidity 96%
Cloud cover 65%
Pressure 1003 hPa
Monday
Mostly cloudy night
Feels like 12°C
Wind direction south
Gusts 13 km/h
Humidity 95%
Cloud cover 71%
Pressure 1003 hPa
Mostly cloudy night
Feels like 14°C
Wind direction west
Gusts 33 km/h
Humidity 96%
Cloud cover 54%
Pressure 1005 hPa
Mostly cloudy
Feels like 14°C
Wind direction northwest
Gusts 39 km/h
Humidity 97%
Cloud cover 80%
Pressure 1008 hPa
Overcast
Feels like 13°C
Wind direction northwest
Gusts 38 km/h
Humidity 88%
Cloud cover 100%
Pressure 1012 hPa
Overcast
Feels like 15°C
Wind direction northwest
Gusts 28 km/h
Humidity 71%
Cloud cover 100%
Pressure 1014 hPa
Overcast
Feels like 15°C
Wind direction west
Gusts 32 km/h
Humidity 62%
Cloud cover 100%
Pressure 1017 hPa
Overcast
Feels like 14°C
Wind direction southwest
Gusts 15 km/h
Humidity 74%
Cloud cover 100%
Pressure 1017 hPa
Today
Overcast night
Feels like 16°C
Wind direction southGusts 2 km/h
Humidity 95%Cloud cover 91%Pressure 1004 hPa
Overcast night
Feels like 16°C
Wind direction southwestGusts 5 km/h
Humidity 96%Cloud cover 89%Pressure 1004 hPa
Tomorrow
Overcast night
Feels like 15°C
Wind direction southwestGusts 6 km/h
Humidity 97%Cloud cover 86%Pressure 1005 hPa
Mostly cloudy night
Feels like 15°C
Wind direction southGusts 7 km/h
Humidity 98%Cloud cover 80%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction southGusts 12 km/h
Humidity 100%Cloud cover 61%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction southGusts 17 km/h
Humidity 99%Cloud cover 53%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction southGusts 21 km/h
Humidity 99%Cloud cover 52%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction southGusts 24 km/h
Humidity 99%Cloud cover 54%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction southGusts 22 km/h
Humidity 98%Cloud cover 54%Pressure 1006 hPa
Partly cloudy
Feels like 14°C
Wind direction southGusts 24 km/h
Humidity 98%Cloud cover 49%Pressure 1006 hPa
Partly cloudy
Feels like 15°C
Wind direction southGusts 28 km/h
Humidity 96%Cloud cover 36%Pressure 1006 hPa
Partly cloudy
Feels like 17°C
Wind direction southGusts 30 km/h
Humidity 91%Cloud cover 41%Pressure 1006 hPa
Light rain
Feels like 17°C
Wind direction southGusts 32 km/h
Humidity 88%Cloud cover 56%Pressure 1006 hPa
Light rain
Feels like 17°C
Wind direction southGusts 33 km/h
Humidity 87%Cloud cover 69%Pressure 1006 hPa
Light rain
Feels like 18°C
Wind direction southGusts 34 km/h
Humidity 81%Cloud cover 75%Pressure 1005 hPa
Light rain
Feels like 18°C
Wind direction southGusts 35 km/h
Humidity 77%Cloud cover 79%Pressure 1005 hPa
Overcast
Feels like 18°C
Wind direction southGusts 36 km/h
Humidity 80%Cloud cover 100%Pressure 1004 hPa
Light rain
Feels like 18°C
Wind direction southGusts 38 km/h
Humidity 85%Cloud cover 100%Pressure 1004 hPa
Light rain
Feels like 17°C
Wind direction southGusts 37 km/h
Humidity 90%Cloud cover 100%Pressure 1003 hPa
Light rain
Feels like 16°C
Wind direction southGusts 41 km/h
Humidity 93%Cloud cover 100%Pressure 1003 hPa
Light rain
Feels like 16°C
Wind direction southGusts 34 km/h
Humidity 91%Cloud cover 100%Pressure 1003 hPa
Light rain
Feels like 16°C
Wind direction southGusts 33 km/h
Humidity 91%Cloud cover 100%Pressure 1003 hPa
Light rain
Feels like 14°C
Wind direction southGusts 26 km/h
Humidity 94%Cloud cover 44%Pressure 1003 hPa
Partly cloudy night
Feels like 13°C
Wind direction southGusts 18 km/h
Humidity 96%Cloud cover 48%Pressure 1003 hPa
Mostly cloudy night
Feels like 13°C
Wind direction southGusts 17 km/h
Humidity 96%Cloud cover 65%Pressure 1003 hPa
Mostly cloudy night
Feels like 13°C
Wind direction southGusts 15 km/h
Humidity 95%Cloud cover 73%Pressure 1003 hPa
Monday
Mostly cloudy night
Feels like 13°C
Wind direction southGusts 15 km/h
Humidity 94%Cloud cover 77%Pressure 1003 hPa
Mostly cloudy night
Feels like 12°C
Wind direction southGusts 13 km/h
Humidity 95%Cloud cover 71%Pressure 1003 hPa
Partly cloudy night
Feels like 12°C
Wind direction southwestGusts 16 km/h
Humidity 96%Cloud cover 41%Pressure 1004 hPa
Partly cloudy night
Feels like 13°C
Wind direction westGusts 26 km/h
Humidity 97%Cloud cover 31%Pressure 1005 hPa
Mostly cloudy night
Feels like 14°C
Wind direction westGusts 33 km/h
Humidity 96%Cloud cover 54%Pressure 1005 hPa
Mostly cloudy night
Feels like 14°C
Wind direction westGusts 32 km/h
Humidity 96%Cloud cover 67%Pressure 1006 hPa
Mostly cloudy night
Feels like 14°C
Wind direction westGusts 35 km/h
Humidity 98%Cloud cover 76%Pressure 1007 hPa
Mostly cloudy
Feels like 14°C
Wind direction northwestGusts 39 km/h
Humidity 97%Cloud cover 80%Pressure 1008 hPa
Light rain
Feels like 14°C
Wind direction northwestGusts 40 km/h
Humidity 96%Cloud cover 100%Pressure 1009 hPa
Overcast
Feels like 14°C
Wind direction northwestGusts 39 km/h
Humidity 94%Cloud cover 100%Pressure 1010 hPa
Overcast
Feels like 13°C
Wind direction northwestGusts 38 km/h
Humidity 88%Cloud cover 100%Pressure 1012 hPa
Overcast
Feels like 13°C
Wind direction northwestGusts 36 km/h
Humidity 83%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 14°C
Wind direction northwestGusts 34 km/h
Humidity 78%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 15°C
Wind direction northwestGusts 28 km/h
Humidity 71%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 15°C
Wind direction northwestGusts 28 km/h
Humidity 65%Cloud cover 100%Pressure 1015 hPa
Overcast
Feels like 15°C
Wind direction northwestGusts 32 km/h
Humidity 60%Cloud cover 100%Pressure 1016 hPa
Overcast
Feels like 15°C
Wind direction westGusts 32 km/h
Humidity 62%Cloud cover 100%Pressure 1017 hPa
Overcast
Feels like 15°C
Wind direction westGusts 29 km/h
Humidity 61%Cloud cover 100%Pressure 1017 hPa
Overcast
Feels like 15°C
Wind direction westGusts 24 km/h
Humidity 65%Cloud cover 100%Pressure 1017 hPa
Overcast
Feels like 14°C
Wind direction southwestGusts 15 km/h
Humidity 74%Cloud cover 100%Pressure 1017 hPa
Overcast
Feels like 12°C
Wind direction southGusts 14 km/h
Humidity 79%Cloud cover 100%Pressure 1018 hPa
Overcast night
Feels like 12°C
Wind direction southGusts 15 km/h
Humidity 79%Cloud cover 100%Pressure 1018 hPa
Overcast night
Feels like 11°C
Wind direction southGusts 13 km/h
Humidity 82%Cloud cover 100%Pressure 1019 hPa
Overcast night
Feels like 11°C
Wind direction southGusts 12 km/h
Humidity 82%Cloud cover 100%Pressure 1019 hPa
Tuesday
Overcast night
Feels like 11°C
Wind direction southGusts 13 km/h
Humidity 88%Cloud cover 91%Pressure 1019 hPa
Mostly cloudy night
Feels like 11°C
Wind direction southGusts 11 km/h
Humidity 92%Cloud cover 77%Pressure 1019 hPa
Mostly clear night
Feels like 11°C
Wind direction southwestGusts 15 km/h
Humidity 94%Cloud cover 18%Pressure 1019 hPa
Mostly clear night
Feels like 11°C
Wind direction southwestGusts 22 km/h
Humidity 93%Cloud cover 19%Pressure 1018 hPa
Partly cloudy night
Feels like 11°C
Wind direction southwestGusts 21 km/h
Humidity 92%Cloud cover 29%Pressure 1018 hPa
Partly cloudy night
Feels like 11°C
Wind direction southGusts 19 km/h
Humidity 92%Cloud cover 38%Pressure 1018 hPa
Mostly cloudy night
Feels like 12°C
Wind direction southGusts 24 km/h
Humidity 92%Cloud cover 51%Pressure 1018 hPa
Mostly cloudy
Feels like 12°C
Wind direction southwestGusts 28 km/h
Humidity 94%Cloud cover 59%Pressure 1018 hPa
Overcast
Feels like 14°C
Wind direction southwestGusts 31 km/h
Humidity 91%Cloud cover 95%Pressure 1018 hPa
Mostly cloudy
Feels like 16°C
Wind direction southwestGusts 29 km/h
Humidity 82%Cloud cover 68%Pressure 1019 hPa
Mostly cloudy
Feels like 16°C
Wind direction southwestGusts 28 km/h
Humidity 77%Cloud cover 72%Pressure 1019 hPa
Mostly cloudy
Feels like 17°C
Wind direction southwestGusts 30 km/h
Humidity 76%Cloud cover 79%Pressure 1019 hPa
Mostly cloudy
Feels like 18°C
Wind direction southwestGusts 32 km/h
Humidity 74%Cloud cover 83%Pressure 1019 hPa
Overcast
Feels like 18°C
Wind direction southwestGusts 32 km/h
Humidity 75%Cloud cover 86%Pressure 1019 hPa
Light rain
Feels like 18°C
Wind direction southwestGusts 32 km/h
Humidity 75%Cloud cover 100%Pressure 1019 hPa
Light rain
Feels like 18°C
Wind direction southwestGusts 32 km/h
Humidity 74%Cloud cover 100%Pressure 1019 hPa
Light rain
Feels like 18°C
Wind direction southwestGusts 31 km/h
Humidity 75%Cloud cover 99%Pressure 1019 hPa
Light rain
Feels like 18°C
Wind direction southwestGusts 32 km/h
Humidity 81%Cloud cover 88%Pressure 1019 hPa
Light rain
Feels like 17°C
Wind direction southwestGusts 34 km/h
Humidity 87%Cloud cover 74%Pressure 1019 hPa
Light rain
Feels like 16°C
Wind direction southGusts 36 km/h
Humidity 92%Cloud cover 72%Pressure 1019 hPa
Light rain
Feels like 15°C
Wind direction southGusts 32 km/h
Humidity 95%Cloud cover 100%Pressure 1019 hPa
Light rain
Feels like 14°C
Wind direction southGusts 29 km/h
Humidity 97%Cloud cover 100%Pressure 1019 hPa
Light rain
Feels like 15°C
Wind direction southGusts 29 km/h
Humidity 98%Cloud cover 100%Pressure 1020 hPa
Overcast night
Feels like 15°C
Wind direction southGusts 28 km/h
Humidity 98%Cloud cover 100%Pressure 1019 hPa
Wednesday
Overcast night
Feels like 15°C
Wind direction southGusts 36 km/h
Humidity 98%Cloud cover 100%Pressure 1019 hPa
Overcast night
Feels like 15°C
Wind direction southwestGusts 39 km/h
Humidity 96%Cloud cover 100%Pressure 1019 hPa
Overcast night
Feels like 16°C
Wind direction southwestGusts 42 km/h
Humidity 95%Cloud cover 100%Pressure 1018 hPa
Light rain
Feels like 16°C
Wind direction southGusts 40 km/h
Humidity 95%Cloud cover 100%Pressure 1017 hPa
Light rain
Feels like 16°C
Wind direction southwestGusts 44 km/h
Humidity 95%Cloud cover 100%Pressure 1017 hPa
Light rain
Feels like 16°C
Wind direction southGusts 46 km/h
Humidity 95%Cloud cover 100%Pressure 1016 hPa
Light rain
Feels like 16°C
Wind direction southwestGusts 49 km/h
Humidity 96%Cloud cover 100%Pressure 1016 hPa
Light rain
Feels like 16°C
Wind direction southGusts 49 km/h
Humidity 96%Cloud cover 100%Pressure 1015 hPa
Moderate rain
Feels like 16°C
Wind direction southGusts 50 km/h
Humidity 98%Cloud cover 100%Pressure 1015 hPa
Moderate rain
Feels like 16°C
Wind direction southGusts 52 km/h
Humidity 98%Cloud cover 100%Pressure 1015 hPa
Light rain
Feels like 17°C
Wind direction southGusts 52 km/h
Humidity 99%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 17°C
Wind direction southwestGusts 51 km/h
Humidity 99%Cloud cover 100%Pressure 1015 hPa
Overcast
Feels like 18°C
Wind direction southwestGusts 51 km/h
Humidity 98%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 19°C
Wind direction southwestGusts 51 km/h
Humidity 96%Cloud cover 100%Pressure 1014 hPa
Light rain
Feels like 19°C
Wind direction southwestGusts 49 km/h
Humidity 95%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 19°C
Wind direction southwestGusts 49 km/h
Humidity 91%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 18°C
Wind direction southwestGusts 48 km/h
Humidity 91%Cloud cover 100%Pressure 1014 hPa
Overcast
Feels like 19°C
Wind direction southwestGusts 48 km/h
Humidity 90%Cloud cover 100%Pressure 1013 hPa
Overcast
Feels like 18°C
Wind direction southwestGusts 49 km/h
Humidity 92%Cloud cover 97%Pressure 1013 hPa
Overcast
Feels like 18°C
Wind direction southwestGusts 49 km/h
Humidity 95%Cloud cover 98%Pressure 1013 hPa
Overcast
Feels like 17°C
Wind direction southwestGusts 45 km/h
Humidity 96%Cloud cover 99%Pressure 1013 hPa
In Caernarfon and, more broadly, across Gwynedd: The evening will see mostly cloudy skies with temperatures remaining cool, ranging from 16 to 16 degrees Celsius. Winds will be light, coming from the south with maximum speeds of 0 mph and gusts up to 1 mph. No precipitation is expected during the next few hours, so it should remain dry throughout the evening. Conditions are likely to stay fairly settled, with no significant changes anticipated overnight. It may feel slightly cooler as temperatures stay steady, but overall, the weather remains quiet and comfortable.
15-Day Weather Outlook for Caernarfon
TomorrowTomorrow
Light rain
17°/13°
💧 3.7 mm
💨 24 km/h
Light rain
17°/13°
💧 3.7 mm
💨 24 km/h
Daytime temperature 17°C
Feels like 17°C
Humidity 86%
Pressure 1005 hPa
Cloud cover 71%
Wind direction south
Gusts 39 km/h
Sunrise 6:23 AM
Sunset 8:12 PM
Monday, Aug 31Mon Aug 31
Light rain
16°/12°
💧 0.9 mm
💨 23 km/h
Light rain
16°/12°
💧 0.9 mm
💨 23 km/h
Daytime temperature 15°C
Feels like 14°C
Humidity 66%
Pressure 1015 hPa
Cloud cover 100%
Wind direction northwest
Gusts 38 km/h
Sunrise 6:25 AM
Sunset 8:10 PM
Tuesday, Sep 1Tue Sep 1
Light rain
18°/12°
💧 0.1 mm
💨 27 km/h
Light rain
18°/12°
💧 0.1 mm
💨 27 km/h
Daytime temperature 18°C
Feels like 18°C
Humidity 70%
Pressure 1018 hPa
Cloud cover 73%
Wind direction southwest
Gusts 34 km/h
Sunrise 6:26 AM
Sunset 8:08 PM
Wednesday, Sep 2Wed Sep 2
Moderate rain
18°/15°
💧 10 mm
💨 30 km/h
Moderate rain
18°/15°
💧 10 mm
💨 30 km/h
Daytime temperature 18°C
Feels like 19°C
Humidity 94%
Pressure 1013 hPa
Cloud cover 100%
Wind direction southwest
Gusts 55 km/h
Sunrise 6:28 AM
Sunset 8:05 PM
Thursday, Sep 3Thu Sep 3
Light rain
18°/14°
💧 0.6 mm
💨 31 km/h
Light rain
18°/14°
💧 0.6 mm
💨 31 km/h
Daytime temperature 17°C
Feels like 17°C
Humidity 65%
Pressure 1014 hPa
Cloud cover 7%
Wind direction southwest
Gusts 46 km/h
Sunrise 6:30 AM
Sunset 8:03 PM
Friday, Sep 4Fri Sep 4
Light rain
18°/13°
💧 2.0 mm
💨 28 km/h
Light rain
18°/13°
💧 2.0 mm
💨 28 km/h
Daytime temperature 17°C
Feels like 16°C
Humidity 66%
Pressure 1016 hPa
Cloud cover 94%
Wind direction west
Gusts 46 km/h
Sunrise 6:31 AM
Sunset 8:00 PM
Saturday, Sep 5Sat Sep 5
Light rain
19°/15°
💧 1.2 mm
💨 28 km/h
Light rain
19°/15°
💧 1.2 mm
💨 28 km/h
Daytime temperature 19°C
Feels like 20°C
Humidity 87%
Pressure 1016 hPa
Cloud cover 80%
Wind direction southwest
Gusts 57 km/h
Sunrise 6:33 AM
Sunset 7:58 PM
Sunday, Sep 6Sun Sep 6
Light rain
19°/13°
💧 3.1 mm
💨 36 km/h
Light rain
19°/13°
💧 3.1 mm
💨 36 km/h
Daytime temperature 19°C
Feels like 19°C
Humidity 83%
Pressure 1012 hPa
Cloud cover 59%
Wind direction southwest
Gusts 61 km/h
Sunrise 6:35 AM
Sunset 7:56 PM
Monday, Sep 7Mon Sep 7
Light rain
14°/8°
💧 1.1 mm
💨 10 km/h
Light rain
14°/8°
💧 1.1 mm
💨 10 km/h
Daytime temperature 14°C
Feels like 13°C
Humidity 73%
Pressure 1021 hPa
Cloud cover 99%
Wind direction west
Gusts 17 km/h
Sunrise 6:37 AM
Sunset 7:53 PM
Tuesday, Sep 8Tue Sep 8
Overcast
16°/8°
💧 None
💨 9 km/h
Overcast
16°/8°
💧 None
💨 9 km/h
Daytime temperature 16°C
Feels like 15°C
Humidity 59%
Pressure 1016 hPa
Cloud cover 91%
Wind direction southwest
Gusts 9 km/h
Sunrise 6:38 AM
Sunset 7:51 PM
Wednesday, Sep 9Wed Sep 9
Light rain
15°/8°
💧 0.7 mm
💨 19 km/h
Light rain
15°/8°
💧 0.7 mm
💨 19 km/h
Daytime temperature 15°C
Feels like 14°C
Humidity 67%
Pressure 1016 hPa
Cloud cover 100%
Wind direction northwest
Gusts 25 km/h
Sunrise 6:40 AM
Sunset 7:48 PM
Thursday, Sep 10Thu Sep 10
Overcast
14°/6°
💧 None
💨 14 km/h
Overcast
14°/6°
💧 None
💨 14 km/h
Daytime temperature 13°C
Feels like 12°C
Humidity 65%
Pressure 1025 hPa
Cloud cover 97%
Wind direction south
Gusts 35 km/h
Sunrise 6:42 AM
Sunset 7:46 PM
Friday, Sep 11Fri Sep 11
Overcast
22°/14°
💧 None
💨 25 km/h
Overcast
22°/14°
💧 None
💨 25 km/h
Daytime temperature 20°C
Feels like 21°C
Humidity 83%
Pressure 1023 hPa
Cloud cover 97%
Wind direction south
Gusts 44 km/h
Sunrise 6:43 AM
Sunset 7:44 PM
Saturday, Sep 12Sat Sep 12
Light rain
21°/15°
💧 0.8 mm
💨 19 km/h
Light rain
21°/15°
💧 0.8 mm
💨 19 km/h
Daytime temperature 21°C
Feels like 21°C
Humidity 69%
Pressure 1016 hPa
Cloud cover 98%
Wind direction south
Gusts 37 km/h
Sunrise 6:45 AM
Sunset 7:41 PM
Sunday, Sep 13Sun Sep 13
Overcast
20°/16°
💧 None
💨 17 km/h
Overcast
20°/16°
💧 None
💨 17 km/h
Daytime temperature 20°C
Feels like 20°C
Humidity 73%
Pressure 1011 hPa
Cloud cover 100%
Wind direction southwest
Gusts 27 km/h
Sunrise 6:47 AM
Sunset 7:39 PM
TEMPERATURE OUTLOOK
Temperature & Weather Trends in Caernarfon
AIR QUALITY FORECAST
Air Quality Forecast for Caernarfon
Fair
Nearest forecast value
10:00 PM
PM2.5 Fine particles Good 1,7µg/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 2,1µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 84,2µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 1,8µg/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 Good 1,9µg/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 2,4µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 75,8µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 1,6µg/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 0,5µg/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 0,8µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 63,2µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 0,7µg/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 Good 0,5µg/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 1,4µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 78,3µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 0,9µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
Fair
Selected time
12:00 AM
PM2.5 Fine particles Good 0,5µg/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 1,0µg/m³
Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.
O₃ Ozone Fair 88,5µg/m³
Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.
NO₂ Nitrogen dioxide Good 0,5µg/m³
A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.
Air quality is acceptable for most people.
UV & HEALTH
UV, Sun & Health Outlook in Caernarfon
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 0,6Low
🙂Fair
Tomorrow
UV 3,3Moderate
🙂Fair
Monday
UV 3,0Moderate
🙂Fair
Tuesday
UV 4,3Moderate
🙂Fair
Wednesday
UV 4,0Moderate
🙂Fair
Thursday
UV 4,0Moderate
—Unavailable
Friday
UV 5,0Moderate
—Unavailable
Today's weather health advice
Open today's recommendations.
Low UV risk
UV radiation will be low, although basic protection is still advisable during prolonged exposure.
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 Caernarfon
Sustained wind
Max gusts
Internal PR simulation:
3.97
Population: 9,835
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Forecast data for Caernarfon were last refreshed today at 8:51 PM. The current forecast period extends through 31/08/2026 at 7:00 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.