Worst air pollution South Norwood, today and tomorrow
Today (9 August): Air quality in South Norwood is fair. PM2.5 and PM1 are fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 56.2/100).
Tomorrow (10 August 2026): Air quality in South Norwood is fair. AQI worsens to fair; PM2.5 decreases to good; NO2 decreases to good; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 33.3/100). 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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South Norwood's air quality reflects its position within Croydon, with local traffic and the town's built-up core as the main contributors. Easterly winds help ventilate the town centre, keeping air quality at moderate levels typical for the region. The A34 sees the heaviest traffic, and that shows up clearly in local roadside monitoring.
Today - 9 August | Pollution peaks at 15:00
AQI:
Medium
56.2/100
PM2.5 (fine particles):
Fair
22.1/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Medium
47.2/100
O3 (ozone):
Medium
56.2/100
SO2 (sulfur dioxide):
Good
12.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.8/100
PM1 (ultrafine particles):
Fair
28.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Fair
33.3/100
PM2.5 (fine particles):
Good
7.4/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Good
16.6/100
O3 (ozone):
Fair
33.3/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
6.6/100
Pollen forecast in South Norwood
View pollen forecastFrequently Asked Questions
Is air quality bad in South Norwood right now?
On 9 August 2026, overall air quality in South Norwood is fair. PM1 is the main pollutant at 28.2/100. Pollution peaks around 3:00 PM (O3: 56.2/100).
Will air quality be worse tomorrow in South Norwood?
On 10 August 2026, air quality conditions in South Norwood will be similar to today, with AQI forecast at fair at 33.3/100. Pollution peaks around 5:00 PM (O3: 33.3/100).
When is air pollution at its worst in South Norwood?
South Norwood doesn't have one fixed air quality level — it swings between two extremes each year. 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. Once the heating goes on and the air turns still, pollution from the A34 and nearby chimneys tends to build up rather than clear.
Are air quality levels in South Norwood 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: 9 August 2026 at 20:27 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.
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