Air Quality St Helens
Air Quality for May 19, 2024
Air pollution
Data on the main pollutant gases
| Pollutant | Value |
|---|---|
| Carbon Monoxide | coming soon μg/m3 |
| Ozone | coming soon μg/m3 |
| Nitrogen dioxide | coming soon μg/m3 |
| Sulphur dioxide | coming soon μg/m3 |
| PM2.5 | coming soon μg/m3 |
| PM10 | coming soon μg/m3 |
| The table shows data on major pollutant gases | |
Daily Air Quality Index
The Daily Air Quality Index informs you about air pollution levels and offers recommended actions and health tips. The definition of each of the indices is given below.
| Name | Value |
|---|---|
| US - EPA standard | |
| UK Defra Index | coming soon |
| Air Quality Index values | |
Hourly Air Quality for St Helens for May 19, 2024
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 12 ℃
Wind speed 4.3 km
Wind direction NSW
Wind direction 39°
Humidity 80 %
Cloud cover 15 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 11.6 ℃
Wind speed 4 km
Wind direction NSW
Wind direction 27°
Humidity 78 %
Cloud cover 7 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 11.2 ℃
Wind speed 9 km
Wind direction NSW
Wind direction 60°
Humidity 82 %
Cloud cover 0 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 10.8 ℃
Wind speed 3.6 km
Wind direction NSW
Wind direction 13°
Humidity 77 %
Cloud cover 4 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 10.5 ℃
Wind speed 3.2 km
Wind direction NSW
Wind direction 1°
Humidity 76 %
Cloud cover 3 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 10.4 ℃
Wind speed 2.9 km
Wind direction NSW
Wind direction 355°
Humidity 77 %
Cloud cover 3 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 12 ℃
Wind speed 2.2 km
Wind direction NSW
Wind direction 345°
Humidity 74 %
Cloud cover 4 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 13.7 ℃
Wind speed 2.5 km
Wind direction NSW
Wind direction 6°
Humidity 66 %
Cloud cover 3 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 15.5 ℃
Wind speed 4 km
Wind direction NSW
Wind direction 40°
Humidity 57 %
Cloud cover 2 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 17.2 ℃
Wind speed 6.8 km
Wind direction NSW
Wind direction 54°
Humidity 50 %
Cloud cover 4 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 18.4 ℃
Wind speed 9.4 km
Wind direction NSW
Wind direction 57°
Humidity 45 %
Cloud cover 8 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 19.5 ℃
Wind speed 10.1 km
Wind direction NSW
Wind direction 59°
Humidity 42 %
Cloud cover 5 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 20.3 ℃
Wind speed 10.1 km
Wind direction NSW
Wind direction 62°
Humidity 40 %
Cloud cover 2 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 20.9 ℃
Wind speed 10.1 km
Wind direction NSW
Wind direction 57°
Humidity 39 %
Cloud cover 1 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 21.2 ℃
Wind speed 10.8 km
Wind direction NSW
Wind direction 52°
Humidity 39 %
Cloud cover 0 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 21.2 ℃
Wind speed 10.8 km
Wind direction NSW
Wind direction 47°
Humidity 40 %
Cloud cover 2 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 20.9 ℃
Wind speed 11.2 km
Wind direction NSW
Wind direction 43°
Humidity 42 %
Cloud cover 3 %
Pressure 1015 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 20.4 ℃
Wind speed 10.1 km
Wind direction NSW
Wind direction 44°
Humidity 47 %
Cloud cover 3 %
Pressure 1015 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 19.4 ℃
Wind speed 8.6 km
Wind direction NSW
Wind direction 41°
Humidity 56 %
Cloud cover 4 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 17.6 ℃
Wind speed 8.6 km
Wind direction NSW
Wind direction 49°
Humidity 64 %
Cloud cover 5 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 15.5 ℃
Wind speed 9.7 km
Wind direction NSW
Wind direction 66°
Humidity 69 %
Cloud cover 8 %
Pressure 1016 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 13.8 ℃
Wind speed 10.1 km
Wind direction NSW
Wind direction 79°
Humidity 72 %
Cloud cover 14 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 13 ℃
Wind speed 9 km
Wind direction NSW
Wind direction 94°
Humidity 75 %
Cloud cover 16 %
Pressure 1017 mb
Precipitation 0 mm
Carbon Monoxide coming soon μg/m3
Ozone coming soon μg/m3
Nitrogen dioxide coming soon μg/m3
Sulphur dioxide coming soon μg/m3
PM2.5 coming soon μg/m3
PM10 coming soon μg/m3
US - EPA standard coming soon
UK Defra Index coming soon
Wind chill 12.4 ℃
Wind speed 7.2 km
Wind direction NSW
Wind direction 104°
Humidity 78 %
Cloud cover 16 %
Pressure 1017 mb
Precipitation 0 mm
Wind Activity and Humidity
| Parameter | Value |
|---|---|
| Wind speed max | 11.2 kph |
| Humidity avg | 61 % |
| Wind Activity and Humidity | |