Devnya Seasonal Pollution
Devnya usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in May. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Varna, Bulgaria.
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Average EPA AQI
49
Rank 17 of 35 cities by average AQI
PM2.5
11.4
ug/m3 annualized city average
Seasonality
January
Cleanest: May
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Devnya
72
59
56
38
31
35
44
40
35
44
65
61
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Devnya, the current global analytics build covers 367 daily rows from 2023-12-31 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.