Brussels Seasonal Pollution
Brussels usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in April. The page uses OpenAQ-derived daily history for 8 mapped monitoring locations in Brussels-Capital Region, Belgium.
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Average EPA AQI
45
Rank 28 of 67 cities by average AQI
PM2.5
9.9
ug/m3 annualized city average
Seasonality
November
Cleanest: April
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Brussels
49
38
41
29
50
47
38
47
51
48
57
53
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Brussels, the current global analytics build covers 304 daily rows from 2024-01-29 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.