Eonyang Seasonal Pollution
Eonyang usually records its highest OpenAQ-derived EPA AQI in April and its cleanest month in October. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Ulsan, South Korea.
Search city analytics
Average EPA AQI
59
Rank 38 of 100 cities by average AQI
PM2.5
14.4
ug/m3 annualized city average
Seasonality
April
Cleanest: October
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Eonyang
-
-
61
76
60
66
54
60
54
51
57
58
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Eonyang, the current global analytics build covers 285 daily rows from 2024-03-20 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.