Madrid Seasonal Pollution
Madrid usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in May. The page uses OpenAQ-derived daily history for 6 mapped monitoring locations in Community of Madrid, Spain.
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Average EPA AQI
38
Rank 95 of 253 cities by average AQI
PM2.5
7.9
ug/m3 annualized city average
Seasonality
January
Cleanest: May
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Madrid
50
41
24
31
24
34
40
50
34
29
40
49
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Madrid, the current global analytics build covers 323 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.