Varna Seasonal Pollution
Varna usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in September. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Varna, Bulgaria.
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Average EPA AQI
52
Rank 12 of 35 cities by average AQI
PM2.5
11.9
ug/m3 annualized city average
Seasonality
November
Cleanest: September
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Varna
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52
56
46
45
50
60
48
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Varna, the current global analytics build covers 160 daily rows from 2024-06-06 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.