Rome Seasonal Pollution
Rome usually records its highest OpenAQ-derived EPA AQI in November and its cleanest month in May. The page uses OpenAQ-derived daily history for 16 mapped monitoring locations in Lazio, Italy.
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Average EPA AQI
44
Rank 64 of 132 cities by average AQI
PM2.5
12.3
ug/m3 annualized city average
Seasonality
November
Cleanest: May
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Rome
37
60
46
42
25
36
48
42
35
45
61
52
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Rome, the current global analytics build covers 366 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.