Worst air pollution Cwmbran, today and tomorrow
Today (16 July): Air quality in Cwmbran is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 34.0/100).
Tomorrow (17 July 2026): Air quality in Cwmbran is medium. 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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Traffic on the A483 is the most significant local emissions source, especially at peak times. Air quality in Cwmbran is shaped by its location in Torfaen, where vehicle traffic and everyday urban activity dominate local sources. Cooler northerly winds do most of the work keeping things in check, more so than any local policy or infrastructure change.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
9.1/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Good
12.1/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
8.7/100
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
12.4/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
17.1/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
11.6/100
Pollen forecast in Cwmbran
View pollen forecastFrequently Asked Questions
Is air quality bad in Cwmbran right now?
On 16 July 2026, overall air quality in Cwmbran 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 Cwmbran?
On 17 July 2026, air quality conditions in Cwmbran will be better than today, with AQI forecast at medium at 43.6/100. Pollution peaks around 4:00 PM (O3: 43.6/100).
When is air pollution at its worst in Cwmbran?
Ask a local in Cwmbran and they'll tell you air quality changes noticeably from season to season. In deep winter, a lack of wind lets A483 traffic fumes and woodsmoke settle instead of blowing through. 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. For much of spring and autumn, things settle into a fairly unremarkable middle ground.
Are air quality levels in Cwmbran 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