Ridderkerk Seasonal Pollution
Ridderkerk usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in April. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Zuid-Holland, Netherlands.
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Average EPA AQI
41
Rank 33 of 71 cities by average AQI
PM2.5
8.8
ug/m3 annualized city average
Seasonality
May
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Ridderkerk
-
-
49
25
52
39
31
37
44
39
46
48
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Ridderkerk, the current global analytics build covers 264 daily rows from 2024-03-08 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.