Abertawe Seasonal Pollution
Abertawe usually records its highest OpenAQ-derived EPA AQI in September and its cleanest month in December. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Swansea, United Kingdom.
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Average EPA AQI
36
Rank 78 of 171 cities by average AQI
PM2.5
7.1
ug/m3 annualized city average
Seasonality
September
Cleanest: December
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Abertawe
42
31
37
31
42
38
29
39
55
31
35
25
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Abertawe, the current global analytics build covers 332 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.