Culcheth Seasonal Pollution
Culcheth usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in July. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Warrington, United Kingdom.
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Average EPA AQI
32
Rank 110 of 171 cities by average AQI
PM2.5
6.2
ug/m3 annualized city average
Seasonality
May
Cleanest: July
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Culcheth
33
32
37
24
42
28
23
32
36
31
-
-
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Culcheth, the current global analytics build covers 282 daily rows from 2024-01-01 to 2024-10-26. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.