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Ljubljana Seasonal Pollution

Ljubljana usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in October. The page uses OpenAQ-derived daily history for 4 mapped monitoring locations in Central Slovenia, Slovenia.

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Average EPA AQI

45

Rank 7 of 17 cities by average AQI

PM2.5

13.3

ug/m3 annualized city average

Seasonality

December

Cleanest: October

Health indicator

0.6

cigarette-equivalent per day

Yearly EPA AQI trend

0501002024Ljubljana

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec
Ljubljana
39
31
27
47
42
43
48
44
34
26
78
84

What this seasonality page measures

Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.

For Ljubljana, the current global analytics build covers 362 daily rows from 2024-01-03 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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