Talcahuano Seasonal Pollution
Talcahuano usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in December. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Biobío, Chile.
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Average EPA AQI
93
Rank 16 of 60 cities by average AQI
PM2.5
32.8
ug/m3 annualized city average
Seasonality
May
Cleanest: December
Health indicator
1.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Talcahuano
77
77
75
92
143
108
140
117
81
75
68
68
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Talcahuano, 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.