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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.

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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

0501002024Petržalka

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.

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