Worst air pollution Kew Gardens - London, today and tomorrow
Today (20 September): Air quality in Kew Gardens is fair. AQI, PM2.5, PM10, NO2, and PM1 are fair; O3, SO2, CO, and HCHO are good. Pollution peaks around 9:00 PM (NO2: 36.7/100).
Tomorrow (21 September 2026): Air quality in Kew Gardens is moderate. AQI worsens to moderate; PM2.5 increases to moderate; PM10 increases to moderate; NO2 increases to moderate; O3 increases to fair; PM1 increases to moderate; all other pollutants stay as today. Pollution peaks around 8:00 PM (NO2: 54.9/100). 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 nearby M3 corridor contributes steady vehicle emissions that affect roadside readings. Being part of London, City of, Kew Gardens sees an air quality profile that's largely down to traffic and general town-centre activity. The prevailing Atlantic airflow help ventilate the town centre, keeping air quality at moderate levels typical for the region.
Today - 20 September | Pollution peaks at 21:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Fair
35.8/100
PM10 (coarse particles):
Fair
24.8/100
NO2 (nitrogen dioxide):
Fair
36.7/100
O3 (ozone):
Good
17.9/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Fair
29.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 20:00
AQI:
Moderate
54.9/100
PM2.5 (fine particles):
Moderate
48.7/100
PM10 (coarse particles):
Moderate
42.3/100
NO2 (nitrogen dioxide):
Moderate
54.9/100
O3 (ozone):
Fair
20.5/100
SO2 (sulfur dioxide):
Good
13.3/100
CO (carbon monoxide):
Good
1.6/100
HCHO (formaldehyde):
Good
19.8/100
PM1 (ultrafine particles):
Moderate
47.7/100
Other Landmarks in London
Frequently Asked Questions
Is air quality bad in Kew Gardens right now?
On 20 September 2026, overall air quality in Kew Gardens is fair. AQI is the main air quality indicator at 36.7/100. Pollution peaks around 9:00 PM (NO2: 36.7/100).
Will air quality be worse tomorrow in Kew Gardens?
On 21 September 2026, air quality conditions in Kew Gardens will be worse than today, with AQI forecast at moderate at 54.9/100. Pollution peaks around 8:00 PM (NO2: 54.9/100).
When is air pollution at its worst in Kew Gardens?
Ask a local in Kew Gardens and they'll tell you air quality changes noticeably from season to season. Winter mornings can be the trickiest, with cold, still conditions trapping M3 traffic fumes and smoke from home fires close to the ground. Warmer months swap one problem for another — less smoke and heating pollution, but more ozone on the sunniest days. Spring and autumn tend to be the calmer, more moderate stretches by comparison.
Are air quality levels in Kew Gardens 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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