Quintero Seasonal Pollution
Quintero usually records its highest OpenAQ-derived EPA AQI in July and its cleanest month in October. The page uses OpenAQ-derived daily history for 9 mapped monitoring locations in Valparaiso, Chile.
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Average EPA AQI
81
Rank 40 of 60 cities by average AQI
PM2.5
24.8
ug/m3 annualized city average
Seasonality
July
Cleanest: October
Health indicator
1.1
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Quintero
75
78
78
79
89
81
105
80
80
71
77
75
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Quintero, the current global analytics build covers 367 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.