Senec Seasonal Pollution
Senec usually records its highest OpenAQ-derived EPA AQI in January and its cleanest month in September. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Bratislava, Slovakia.
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Average EPA AQI
50
Rank 33 of 40 cities by average AQI
PM2.5
11.4
ug/m3 annualized city average
Seasonality
January
Cleanest: September
Health indicator
0.5
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Senec
79
52
59
48
47
52
53
52
44
46
48
49
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Senec, the current global analytics build covers 293 daily rows from 2024-01-29 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.