Haarlem Health Impact
Haarlem averaged 8.4 ug/m3 PM2.5, equal to 1.7x the WHO annual PM2.5 guideline and about 0.4 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Noord-Holland, Netherlands.
Search city analytics
Average EPA AQI
34
Rank 46 of 71 cities by average AQI
PM2.5
8.4
ug/m3 annualized city average
Seasonality
May
Cleanest: February
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Haarlem
18
16
37
25
48
39
31
31
33
35
44
47
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Haarlem, the current global analytics build covers 360 daily rows from 2024-01-03 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.