Castlebar Seasonal Pollution
Castlebar usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Mayo, Ireland.
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Average EPA AQI
12
Rank 17 of 20 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
January
Cleanest: July
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Castlebar
17
14
14
12
10
10
7
12
14
12
12
15
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Castlebar, the current global analytics build covers 313 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.