Calama Seasonal Pollution
Calama usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in May. The page uses OpenAQ-derived daily history for 6 mapped monitoring locations in Antofagasta, Chile.
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Average EPA AQI
67
Rank 54 of 60 cities by average AQI
PM2.5
18.0
ug/m3 annualized city average
Seasonality
December
Cleanest: May
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Calama
69
69
68
67
64
67
68
67
67
66
68
70
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Calama, 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.