Worst air pollution Maesteg, today and tomorrow
Today (20 September): Air quality in Maesteg is fair. AQI, PM2.5, PM10, NO2, O3, and PM1 are fair; SO2, CO, and HCHO are good. Pollution peaks around 9:00 PM (NO2: 38.5/100).
Tomorrow (21 September 2026): Air quality in Maesteg is moderate. AQI worsens to moderate; PM2.5 increases to moderate; NO2 increases to moderate; PM1 increases to moderate; all other pollutants stay as today. Pollution peaks around 8:00 PM (NO2: 58.7/100). 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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Air quality in Maesteg is shaped by its location in Bridgend, where vehicle traffic and everyday urban activity dominate local sources. The A470 sees the heaviest traffic, and that shows up clearly in local roadside monitoring. The dominant maritime airflow usually ensure decent dispersal, so levels generally stay within the moderate range typical of UK towns.
Today - 20 September | Pollution peaks at 21:00
AQI:
Fair
38.5/100
PM2.5 (fine particles):
Fair
33.2/100
PM10 (coarse particles):
Fair
23.8/100
NO2 (nitrogen dioxide):
Fair
38.5/100
O3 (ozone):
Fair
20.0/100
SO2 (sulfur dioxide):
Good
5.6/100
CO (carbon monoxide):
Good
0.9/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Fair
24.3/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 20:00
AQI:
Moderate
58.7/100
PM2.5 (fine particles):
Moderate
44.5/100
PM10 (coarse particles):
Fair
38.7/100
NO2 (nitrogen dioxide):
Moderate
58.7/100
O3 (ozone):
Fair
21.1/100
SO2 (sulfur dioxide):
Good
10.9/100
CO (carbon monoxide):
Good
1.3/100
HCHO (formaldehyde):
Good
15.7/100
PM1 (ultrafine particles):
Moderate
41.3/100
Pollen forecast in Maesteg
View pollen forecastFrequently Asked Questions
Is air quality bad in Maesteg right now?
On 20 September 2026, overall air quality in Maesteg is fair. AQI is the main air quality indicator at 38.5/100. Pollution peaks around 9:00 PM (NO2: 38.5/100).
Will air quality be worse tomorrow in Maesteg?
On 21 September 2026, air quality conditions in Maesteg will be worse than today, with AQI forecast at moderate at 58.7/100. Pollution peaks around 8:00 PM (NO2: 58.7/100).
When is air pollution at its worst in Maesteg?
The shoulder seasons generally bring the mildest readings of the year. If you're tracking air quality in Maesteg, expect it to move around quite a bit through the year. Through the colder months, readings near the A470 often rise, since chimney smoke and stagnant air stop pollutants clearing away. Warmer months swap one problem for another — less smoke and heating pollution, but more ozone on the sunniest days.
Are air quality levels in Maesteg 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 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.
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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