Petržalka Seasonal Pollution
Petržalka usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in September. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Bratislava, Slovakia.
Search city analytics
Average EPA AQI
49
Rank 36 of 40 cities by average AQI
PM2.5
12.5
ug/m3 annualized city average
Seasonality
November
Cleanest: September
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Petržalka
55
43
57
45
46
50
52
44
31
42
61
58
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Petržalka, the current global analytics build covers 340 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.