Forest Seasonal Pollution
Forest usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in April. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Brussels-Capital Region, Belgium.
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Average EPA AQI
47
Rank 20 of 67 cities by average AQI
PM2.5
10.7
ug/m3 annualized city average
Seasonality
November
Cleanest: April
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Forest
47
40
51
33
46
40
35
44
58
51
61
56
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Forest, the current global analytics build covers 338 daily rows from 2024-01-01 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.