Worst air pollution Runcorn, today and tomorrow
Today (16 July): Air quality in Runcorn 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: 28.4/100).
Tomorrow (17 July 2026): Air quality in Runcorn is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 29.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Runcorn's position in Halton means air quality is mostly determined by local road traffic and the compact scale of the centre. Cooler northerly winds generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size. Traffic on the M90 is the most significant local emissions source, especially at peak times.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
28.4/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
7.6/100
O3 (ozone):
Fair
28.4/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Fair
29.3/100
PM2.5 (fine particles):
Good
13.8/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
10.2/100
O3 (ozone):
Fair
29.3/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
11.0/100
Pollen forecast in Runcorn
View pollen forecastFrequently Asked Questions
Is air quality bad in Runcorn right now?
On 16 July 2026, overall air quality in Runcorn is fair. AQI is the main air quality indicator at 28.4/100. Pollution peaks around 3:00 PM (O3: 28.4/100).
Will air quality be worse tomorrow in Runcorn?
On 17 July 2026, air quality conditions in Runcorn will be similar to today, with AQI forecast at fair at 29.3/100. Pollution peaks around 2:00 PM (O3: 29.3/100).
When is air pollution at its worst in Runcorn?
Most of spring and autumn stays fairly steady, right in the middle of those two extremes. In Runcorn, pollution levels don't stay flat — winter and summer look pretty different. Once the heating goes on and the air turns still, pollution from the M90 and nearby chimneys tends to build up rather than clear. Summer's more of a mixed bag: ozone can spike in strong sun, but overall dispersion tends to be better than the depths of winter.
Are air quality levels in Runcorn 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?
Check air quality in other popular cities:
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