Worst air pollution Leigh, today and tomorrow
Today (16 July): Air quality in Leigh is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 28.3/100).
Tomorrow (17 July 2026): Air quality in Leigh is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 27.1/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Leigh's position in Wigan means air quality is mostly determined by local road traffic and the compact scale of the centre. Easterly winds usually ensure decent dispersal, so levels generally stay within the moderate range typical of UK towns. Emissions along the M6 represent the town's main traffic-related pollution source.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
28.3/100
PM2.5 (fine particles):
Good
11.2/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
6.3/100
O3 (ozone):
Fair
28.3/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
9.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
27.1/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
6.6/100
O3 (ozone):
Fair
27.1/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
10.6/100
Pollen forecast in Leigh
View pollen forecastFrequently Asked Questions
Is air quality bad in Leigh right now?
On 16 July 2026, overall air quality in Leigh is fair. AQI is the main air quality indicator at 28.3/100. Pollution peaks around 3:00 PM (O3: 28.3/100).
Will air quality be worse tomorrow in Leigh?
On 17 July 2026, air quality conditions in Leigh will be similar to today, with AQI forecast at fair at 27.1/100. Pollution peaks around 2:00 PM (O3: 27.1/100).
When is air pollution at its worst in Leigh?
Spring and autumn tend to be the calmer, more moderate stretches by comparison. Air quality in Leigh isn't the same all year round — it really shifts with the seasons. Winter mornings can be the trickiest, with cold, still conditions trapping M6 traffic fumes and smoke from home fires close to the ground. Summer sunshine can drive up ozone locally, though overall air generally moves and clears more freely than in winter.
Are air quality levels in Leigh based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United Kingdom?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app