Nacimiento AQI Trends
Nacimiento AQI was measured across 2024-2025, with a trend delta of n/a AQI points. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Biobío, Chile.
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Average EPA AQI
113
Rank 2 of 60 cities by average AQI
PM2.5
46.5
ug/m3 annualized city average
Seasonality
May
Cleanest: January
Health indicator
2.1
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Nacimiento
70
72
74
113
181
142
166
154
104
95
104
83
What this trends page measures
Compare yearly air-quality direction, best years, worst years, and trend deltas.
For Nacimiento, 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.