San Sebastián de los Reyes Seasonal Pollution
San Sebastián de los Reyes usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in March. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Madrid, Spain.
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Average EPA AQI
13
Rank 237 of 253 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
August
Cleanest: March
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
San Sebastián de los Reyes
16
9
6
14
11
12
14
19
13
16
13
10
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For San Sebastián de los Reyes, the current global analytics build covers 264 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.