Hoofddorp Seasonal Pollution
Hoofddorp usually records its highest OpenAQ-derived EPA AQI in September and its cleanest month in March. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Noord-Holland, Netherlands.
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Average EPA AQI
13
Rank 64 of 71 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
September
Cleanest: March
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Hoofddorp
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-
8
9
15
14
12
15
19
14
16
13
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Hoofddorp, the current global analytics build covers 238 daily rows from 2024-03-26 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.