Worst air pollution Wembley, today and tomorrow
Today (20 September): Air quality in Wembley is moderate. AQI and PM2.5 are moderate; PM10 and NO2 are fair; O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM2.5: 40.2/100).
Tomorrow (21 September 2026): Air quality in Wembley is moderate. PM10 increases to moderate; NO2 increases to moderate; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 PM (NO2: 57.5/100). Airmine updates local air quality forecasts four times daily.
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Rush-hour queues near the M3 are usually when readings climb the most. The air quality picture in Wembley reflects a typical Brent town, with traffic emissions and local commercial activity as key contributors. Thanks to northwesterly winds off the coast, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 20 September | Pollution peaks at 23:00
AQI:
Moderate
40.2/100
PM2.5 (fine particles):
Moderate
40.2/100
PM10 (coarse particles):
Fair
24.8/100
NO2 (nitrogen dioxide):
Fair
39.5/100
O3 (ozone):
Good
13.9/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
16.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 20:00
AQI:
Moderate
57.5/100
PM2.5 (fine particles):
Moderate
51.5/100
PM10 (coarse particles):
Moderate
42.3/100
NO2 (nitrogen dioxide):
Moderate
57.5/100
O3 (ozone):
Good
15.8/100
SO2 (sulfur dioxide):
Good
13.3/100
CO (carbon monoxide):
Good
1.6/100
HCHO (formaldehyde):
Good
19.8/100
PM1 (ultrafine particles):
Fair
35.5/100
Pollen forecast in Wembley
View pollen forecastFrequently Asked Questions
Is air quality bad in Wembley right now?
On 20 September 2026, overall air quality in Wembley is moderate. AQI is the main air quality indicator at 40.2/100. Pollution peaks around 11:00 PM (PM2.5: 40.2/100).
Will air quality be worse tomorrow in Wembley?
On 21 September 2026, air quality conditions in Wembley will be similar to today, with AQI forecast at moderate at 57.5/100. Pollution peaks around 8:00 PM (NO2: 57.5/100).
When is air pollution at its worst in Wembley?
Wembley's air quality follows a familiar seasonal pattern most UK towns share. 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. In deep winter, a lack of wind lets M3 traffic fumes and woodsmoke settle instead of blowing through. Spring and autumn usually sit somewhere in between, so it's really the extremes of the year worth watching.
Are air quality levels in Wembley 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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