Worst air pollution Aberystwyth, today and tomorrow
Today (16 July): Air quality in Aberystwyth 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: 29.5/100).
Tomorrow (17 July 2026): Air quality in Aberystwyth is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 34.9/100). 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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The A483 generates consistent traffic-related NO₂ and PM2.5, particularly during peak commuting hours. Being part of Ceredigion, Aberystwyth sees an air quality profile that's largely down to traffic and general town-centre activity. Thanks to cooler northerly winds, pollution rarely lingers for long, which keeps average readings fairly unremarkable by UK standards.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
29.5/100
PM2.5 (fine particles):
Good
12.7/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
21.1/100
O3 (ozone):
Fair
29.5/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Good
10.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
34.9/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Fair
24.0/100
O3 (ozone):
Fair
34.9/100
SO2 (sulfur dioxide):
Good
9.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
16.5/100
Pollen forecast in Aberystwyth
View pollen forecastFrequently Asked Questions
Is air quality bad in Aberystwyth right now?
On 16 July 2026, overall air quality in Aberystwyth is fair. AQI is the main air quality indicator at 29.5/100. Pollution peaks around 3:00 PM (O3: 29.5/100).
Will air quality be worse tomorrow in Aberystwyth?
On 17 July 2026, air quality conditions in Aberystwyth will be similar to today, with AQI forecast at fair at 34.9/100. Pollution peaks around 3:00 PM (O3: 34.9/100).
When is air pollution at its worst in Aberystwyth?
Aberystwyth's air quality follows a familiar seasonal pattern most UK towns share. Winter mornings can be the trickiest, with cold, still conditions trapping A483 traffic fumes and smoke from home fires close to the ground. In summer, ozone can build up on sunny afternoons, though windier, warmer weather usually helps clear traffic-related pollution faster than in winter. For much of spring and autumn, things settle into a fairly unremarkable middle ground.
Are air quality levels in Aberystwyth 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