Worst air pollution Leatherhead, today and tomorrow
Today (16 July): Air quality in Leatherhead is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 35.5/100).
Tomorrow (17 July 2026): Air quality in Leatherhead is fair. AQI improves to medium; NO2 increases to fair; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 48.7/100). 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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The air quality picture in Leatherhead reflects a typical Surrey town, with traffic emissions and local commercial activity as key contributors. Emissions along the M90 represent the town's main traffic-related pollution source. Northwesterly winds off the coast generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Good
9.6/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
15.1/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
8.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Good
15.2/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Fair
21.2/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
15.5/100
Pollen forecast in Leatherhead
View pollen forecastFrequently Asked Questions
Is air quality bad in Leatherhead right now?
On 16 July 2026, overall air quality in Leatherhead is fair. AQI is the main air quality indicator at 35.5/100. Pollution peaks around 2:00 PM (O3: 35.5/100).
Will air quality be worse tomorrow in Leatherhead?
On 17 July 2026, air quality conditions in Leatherhead will be similar to today, with NO2 forecast at fair at 21.2/100. Pollution peaks around 4:00 PM (O3: 48.7/100).
When is air pollution at its worst in Leatherhead?
Air quality in Leatherhead isn't the same all year round — it really shifts with the seasons. Once the heating goes on and the air turns still, pollution from the M90 and nearby chimneys tends to build up rather than clear. In summer, ozone can build up on sunny afternoons, though windier, warmer weather usually helps clear traffic-related pollution faster than in winter. Spring and autumn are typically the easiest months, air-quality-wise, for most residents.
Are air quality levels in Leatherhead 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.
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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