Noordwijkerhout Seasonal Pollution
Noordwijkerhout 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
36
Rank 44 of 71 cities by average AQI
PM2.5
7.2
ug/m3 annualized city average
Seasonality
May
Cleanest: April
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Noordwijkerhout
39
32
42
26
42
35
30
35
35
31
41
40
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Noordwijkerhout, the current global analytics build covers 360 daily rows from 2024-01-04 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.