San Miguel de Allende Seasonal Pollution
San Miguel de Allende usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in July. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Guanajuato, Mexico.
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Average EPA AQI
55
Rank 65 of 86 cities by average AQI
PM2.5
13.3
ug/m3 annualized city average
Seasonality
May
Cleanest: July
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
San Miguel de Allende
49
50
56
67
80
54
41
47
49
49
64
58
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For San Miguel de Allende, the current global analytics build covers 365 daily rows from 2024-01-01 to 2025-01-01. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.