Madrid Seasonal Pollution
Madrid usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in March. The page uses OpenAQ-derived daily history for 12 mapped monitoring locations in Madrid, Spain.
Search city analytics
Average EPA AQI
42
Rank 69 of 253 cities by average AQI
PM2.5
8.9
ug/m3 annualized city average
Seasonality
August
Cleanest: March
Health indicator
0.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Madrid
47
39
25
34
30
42
46
55
44
42
46
48
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 332 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.