Lima Seasonal Pollution
Lima usually records its highest OpenAQ-derived EPA AQI in August and its cleanest month in May. The page uses OpenAQ-derived daily history for 11 mapped monitoring locations in Lima, Peru.
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Average EPA AQI
90
Rank 2 of 14 cities by average AQI
PM2.5
29.6
ug/m3 annualized city average
Seasonality
August
Cleanest: May
Health indicator
1.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Lima
74
66
66
57
55
106
124
125
119
104
87
92
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Lima, 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.