Worst air pollution Swindon, today and tomorrow
Today (16 July): Air quality in Swindon is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 34.0/100).
Tomorrow (17 July 2026): Air quality in Swindon is fair. 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.
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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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Being part of Swindon, Swindon sees an air quality profile that's largely down to traffic and general town-centre activity. Cooler northerly winds generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size. The M90 sees the heaviest traffic, and that shows up clearly in local roadside monitoring.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Fair
21.5/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
10.1/100
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
14.5/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Fair
28.2/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
4.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
13.5/100
Pollen forecast in Swindon
View pollen forecastFrequently Asked Questions
Is air quality bad in Swindon right now?
On 16 July 2026, overall air quality in Swindon 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 Swindon?
On 17 July 2026, air quality conditions in Swindon will be similar to today, with NO2 forecast at fair at 28.2/100. Pollution peaks around 4:00 PM (O3: 43.6/100).
When is air pollution at its worst in Swindon?
Air quality in Swindon isn't the same all year round — it really shifts with the seasons. Winter tends to be worst, with wood burning, home heating, and still, cold air trapping traffic fumes from the M90 closer to ground level. Summer sunshine can drive up ozone locally, though overall air generally moves and clears more freely than in winter. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Swindon 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