San Nicolás de los Garza Seasonal Pollution
San Nicolás de los Garza usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in June. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Nuevo Leon, Mexico.
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Average EPA AQI
68
Rank 46 of 86 cities by average AQI
PM2.5
22.2
ug/m3 annualized city average
Seasonality
May
Cleanest: June
Health indicator
1.0
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
San Nicolás de los Garza
94
77
67
68
94
30
51
50
46
67
71
64
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For San Nicolás de los Garza, the current global analytics build covers 176 daily rows from 2024-01-01 to 2024-12-26. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.