Děčín Seasonal Pollution
Děčín usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in July. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Ústecký Kraj, Czech Republic.
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Average EPA AQI
61
Rank 11 of 61 cities by average AQI
PM2.5
16.1
ug/m3 annualized city average
Seasonality
January
Cleanest: July
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Děčín
84
59
79
55
50
55
46
56
52
58
73
62
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Děčín, the current global analytics build covers 283 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.