Leek Seasonal Pollution
Leek usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in April. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Groningen, Netherlands.
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Average EPA AQI
57
Rank 12 of 71 cities by average AQI
PM2.5
14.9
ug/m3 annualized city average
Seasonality
March
Cleanest: April
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Leek
59
61
75
37
69
52
41
-
-
53
57
57
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Leek, the current global analytics build covers 278 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.