Nis Seasonal Pollution
Nis usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in May. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Belgrade, Serbia.
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Average EPA AQI
80
Rank 10 of 28 cities by average AQI
PM2.5
25.4
ug/m3 annualized city average
Seasonality
January
Cleanest: May
Health indicator
1.2
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Nis
129
117
75
58
48
55
54
50
56
80
118
99
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Nis, the current global analytics build covers 328 daily rows from 2024-01-01 to 2024-12-27. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.