Salamanca Seasonal Pollution
Salamanca usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in September. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Guanajuato, Mexico.
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Average EPA AQI
68
Rank 45 of 86 cities by average AQI
PM2.5
19.0
ug/m3 annualized city average
Seasonality
April
Cleanest: September
Health indicator
0.9
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Salamanca
71
70
72
82
73
64
-
55
35
56
67
66
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Salamanca, the current global analytics build covers 276 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.