Ljubljana Seasonal Pollution
Ljubljana usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in March. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Ljubljana, Slovenia.
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Average EPA AQI
44
Rank 8 of 17 cities by average AQI
PM2.5
14.5
ug/m3 annualized city average
Seasonality
December
Cleanest: March
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Ljubljana
36
29
25
44
40
40
48
38
27
26
83
91
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 361 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.