Lemmer Seasonal Pollution
Lemmer usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in April. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Fryslân, Netherlands.
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Average EPA AQI
24
Rank 52 of 71 cities by average AQI
PM2.5
19.2
ug/m3 annualized city average
Seasonality
December
Cleanest: April
Health indicator
0.9
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Lemmer
12
10
15
9
13
13
12
13
12
43
64
67
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Lemmer, the current global analytics build covers 356 daily rows from 2024-01-05 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.