San Juan del Río Seasonal Pollution
San Juan del Río usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in October. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Querétaro, Mexico.
Search city analytics
Average EPA AQI
58
Rank 61 of 86 cities by average AQI
PM2.5
14.9
ug/m3 annualized city average
Seasonality
May
Cleanest: October
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
San Juan del Río
55
65
66
71
88
60
45
45
39
39
62
64
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For San Juan del Río, the current global analytics build covers 245 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.