Nairobi Seasonal Pollution
Nairobi usually records its highest OpenAQ-derived EPA AQI in May and its cleanest month in March. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Nairobi, Kenya.
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Average EPA AQI
80
Rank 2 of 3 cities by average AQI
PM2.5
30.9
ug/m3 annualized city average
Seasonality
May
Cleanest: March
Health indicator
1.4
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Nairobi
-
61
50
83
223
99
72
59
59
56
55
60
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Nairobi, the current global analytics build covers 330 daily rows from 2024-01-28 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.