Worst air pollution Mitcham, today and tomorrow
Today (16 July): Air quality in Mitcham 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: 34.0/100).
Tomorrow (17 July 2026): Air quality in Mitcham is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 43.6/100). 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
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Air quality in Mitcham is shaped by its location in Merton, where vehicle traffic and everyday urban activity dominate local sources. Thanks to light prevailing breezes, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards. Traffic on the M40 is the most significant local emissions source, especially at peak times.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
3.4/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
7.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Medium
43.6/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
4.8/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
9.9/100
Pollen forecast in Mitcham
View pollen forecastFrequently Asked Questions
Is air quality bad in Mitcham right now?
On 16 July 2026, overall air quality in Mitcham is fair. AQI is the main air quality indicator at 34.0/100. Pollution peaks around 3:00 PM (O3: 34.0/100).
Will air quality be worse tomorrow in Mitcham?
On 17 July 2026, air quality conditions in Mitcham will be better than today, with AQI forecast at medium at 43.6/100. Pollution peaks around 4:00 PM (O3: 43.6/100).
When is air pollution at its worst in Mitcham?
Spring and autumn usually sit somewhere in between, so it's really the extremes of the year worth watching. You can roughly predict Mitcham's air quality just by knowing the time of year. Through the colder months, readings near the M40 often rise, since chimney smoke and stagnant air stop pollutants clearing away. Warmer months swap one problem for another — less smoke and heating pollution, but more ozone on the sunniest days.
Are air quality levels in Mitcham 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