Razgrad Seasonal Pollution
Razgrad usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in October. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Razgrad, Bulgaria.
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Average EPA AQI
64
Rank 3 of 35 cities by average AQI
PM2.5
17.8
ug/m3 annualized city average
Seasonality
November
Cleanest: October
Health indicator
0.8
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Razgrad
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31
74
67
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Razgrad, the current global analytics build covers 41 daily rows from 2024-10-02 to 2024-12-30. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.