Woerden Seasonal Pollution
Woerden usually records its highest OpenAQ-derived EPA AQI in March and its cleanest month in February. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Utrecht, Netherlands.
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Average EPA AQI
14
Rank 59 of 71 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
March
Cleanest: February
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Woerden
14
12
16
14
14
14
13
14
15
12
15
13
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Woerden, the current global analytics build covers 351 daily rows from 2024-01-06 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.