Worst air pollution Trowbridge, today and tomorrow
Today (16 July): Air quality in Trowbridge is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 35.5/100).
Tomorrow (17 July 2026): Air quality in Trowbridge is fair. AQI improves to medium; 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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Trowbridge's air quality reflects its position within Wiltshire, with local traffic and the town's built-up core as the main contributors. Thanks to inland breezes from the surrounding countryside, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards. The M4 generates consistent traffic-related NO₂ and PM2.5, particularly during peak commuting hours.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Good
11.9/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Fair
26.8/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
10.8/100
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
19.0/100
PM10 (coarse particles):
Good
6.2/100
NO2 (nitrogen dioxide):
Fair
36.0/100
O3 (ozone):
Medium
48.7/100
SO2 (sulfur dioxide):
Good
7.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
19.4/100
Pollen forecast in Trowbridge
View pollen forecastFrequently Asked Questions
Is air quality bad in Trowbridge right now?
On 16 July 2026, overall air quality in Trowbridge 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 Trowbridge?
On 17 July 2026, air quality conditions in Trowbridge will be similar to today, with NO2 forecast at fair at 36.0/100. Pollution peaks around 4:00 PM (O3: 48.7/100).
When is air pollution at its worst in Trowbridge?
Spring and autumn tend to be the calmer, more moderate stretches by comparison. Trowbridge's air quality follows a familiar seasonal pattern most UK towns share. In deep winter, a lack of wind lets M4 traffic fumes and woodsmoke settle instead of blowing through. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter.
Are air quality levels in Trowbridge 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