Rancagua Seasonal Pollution
Rancagua usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in December. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Libertador General Bernardo O’Higgins, Chile.
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Average EPA AQI
94
Rank 15 of 60 cities by average AQI
PM2.5
32.7
ug/m3 annualized city average
Seasonality
July
Cleanest: December
Health indicator
1.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Rancagua
71
71
71
84
127
122
166
116
89
72
67
66
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Rancagua, 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.