Haeryong vs Hwasu-dong AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Haeryong and Hwasu-dong. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Haeryong (16-pt gap)PM2.5: Haeryong 11.1 ug/m3 · Hwasu-dong 18.0 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-03-20–2024-12-31 and 2024-03-20–2024-12-31.

Compare two cities

City A

City B

Haeryong vs Hwasu-dong

Haeryong

Jeonnam, South Korea

PM2.5: 11.1 ug/m3
PM10: 22.2 ug/m3
Worst month: April
Trend: n/a

EPA category: Good

Hwasu-dong

Gyeonggi, South Korea

PM2.5: 18.0 ug/m3
PM10: 32.6 ug/m3
Worst month: April
Trend: n/a

EPA category: Moderate

Lower average AQI in this selected period: Haeryong. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Haeryong

Hwasu-dong

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.