San Fernando Seasonal Pollution
San Fernando usually records its highest OpenAQ-derived EPA AQI in June and its cleanest month in November. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Libertador General Bernardo O’Higgins, Chile.
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Average EPA AQI
88
Rank 31 of 60 cities by average AQI
PM2.5
29.1
ug/m3 annualized city average
Seasonality
June
Cleanest: November
Health indicator
1.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
San Fernando
77
76
78
79
122
125
111
110
85
70
65
68
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For San Fernando, the current global analytics build covers 340 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.