Ruse Seasonal Pollution
Ruse usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in August. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Ruse, Bulgaria.
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Average EPA AQI
57
Rank 6 of 35 cities by average AQI
PM2.5
15.1
ug/m3 annualized city average
Seasonality
November
Cleanest: August
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Ruse
73
65
67
51
39
49
36
31
38
53
99
93
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Ruse, the current global analytics build covers 352 daily rows from 2024-01-01 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.