Alcalá de Henares AQI Trends
Alcalá de Henares AQI was measured in 2024, with a trend delta of n/a AQI points. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Madrid, Spain.
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Average EPA AQI
49
Rank 22 of 253 cities by average AQI
PM2.5
10.7
ug/m3 annualized city average
Seasonality
August
Cleanest: March
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Alcalá de Henares
52
45
31
48
42
48
50
61
49
51
53
56
What this trends page measures
Compare yearly air-quality direction, best years, worst years, and trend deltas.
For Alcalá de Henares, the current global analytics build covers 278 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.