Worst air pollution Aberaeron, today and tomorrow
Today (20 September): Air quality in Aberaeron is fair. AQI, PM2.5, and PM10 are fair; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (PM2.5: 28.9/100).
Tomorrow (21 September 2026): Air quality in Aberaeron is moderate. AQI worsens to moderate; PM2.5 increases to moderate; NO2 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM2.5: 40.8/100). Airmine updates local air quality forecasts four times daily.
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Traffic on the A40 is the most significant local emissions source, especially at peak times. Aberaeron's air quality reflects its position within Ceredigion, with local traffic and the town's built-up core as the main contributors. The area's changeable Atlantic weather do most of the work keeping things in check, more so than any local policy or infrastructure change.
Today - 20 September | Pollution peaks at 09:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Fair
28.9/100
PM10 (coarse particles):
Fair
20.6/100
NO2 (nitrogen dioxide):
Good
12.2/100
O3 (ozone):
Good
18.2/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
9.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 23:00
AQI:
Moderate
40.8/100
PM2.5 (fine particles):
Moderate
40.8/100
PM10 (coarse particles):
Fair
22.9/100
NO2 (nitrogen dioxide):
Fair
34.6/100
O3 (ozone):
Good
19.4/100
SO2 (sulfur dioxide):
Good
3.8/100
CO (carbon monoxide):
Good
1.0/100
HCHO (formaldehyde):
Good
4.2/100
PM1 (ultrafine particles):
Fair
26.1/100
Pollen forecast in Aberaeron
View pollen forecastFrequently Asked Questions
Is air quality bad in Aberaeron right now?
On 20 September 2026, overall air quality in Aberaeron is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 9:00 AM (PM2.5: 28.9/100).
Will air quality be worse tomorrow in Aberaeron?
On 21 September 2026, air quality conditions in Aberaeron will be worse than today, with AQI forecast at moderate at 40.8/100. Pollution peaks around 11:00 PM (PM2.5: 40.8/100).
When is air pollution at its worst in Aberaeron?
There's a clear yearly cycle to air quality in Aberaeron if you look closely. Once the heating goes on and the air turns still, pollution from the A40 and nearby chimneys tends to build up rather than clear. 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. The shoulder seasons generally bring the mildest readings of the year.
Are air quality levels in Aberaeron 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 14:33 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.
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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