Miercurea-Ciuc Seasonal Pollution
Miercurea-Ciuc usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in November. The page uses OpenAQ-derived daily history for 5 mapped monitoring locations in Harghita, Romania.
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Average EPA AQI
23
Rank 27 of 69 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
April
Cleanest: November
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Miercurea-Ciuc
24
29
31
36
24
18
24
20
19
14
7
-
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Miercurea-Ciuc, the current global analytics build covers 254 daily rows from 2024-01-01 to 2024-11-29. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.