Worst air pollution Rhondda, today and tomorrow
Today (16 July): Air quality in Rhondda 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 Rhondda 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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Rhondda's air quality reflects its position within Rhondda Cynon Taff, with local traffic and the town's built-up core as the main contributors. Easterly winds do most of the work keeping things in check, more so than any local policy or infrastructure change. Rush-hour queues near the M6 are usually when readings climb the most.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
8.5/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Good
7.9/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
8.1/100
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
11.6/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
11.2/100
O3 (ozone):
Medium
43.6/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
10.8/100
Pollen forecast in Rhondda
View pollen forecastFrequently Asked Questions
Is air quality bad in Rhondda right now?
On 16 July 2026, overall air quality in Rhondda 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 Rhondda?
On 17 July 2026, air quality conditions in Rhondda 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 Rhondda?
For much of spring and autumn, things settle into a fairly unremarkable middle ground. Rhondda's air quality follows a familiar seasonal pattern most UK towns share. The coldest months usually bring the worst readings, as heating and temperature inversions keep M6 emissions from dispersing normally. Summer sunshine can drive up ozone locally, though overall air generally moves and clears more freely than in winter.
Are air quality levels in Rhondda 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