Chihuahua Seasonal Pollution
Chihuahua usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in September. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Chihuahua, Mexico.
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Average EPA AQI
53
Rank 70 of 86 cities by average AQI
PM2.5
12.4
ug/m3 annualized city average
Seasonality
April
Cleanest: September
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Chihuahua
63
56
39
70
39
53
41
49
30
59
-
-
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Chihuahua, the current global analytics build covers 79 daily rows from 2024-01-02 to 2024-12-16. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.