SmogRank / South Korea / Jeollanam-do

Air quality in Muan

Jeollanam-do, South Korea. PM2.5 from 2 reference monitors, updated hourly. Only 1 of them reported in the last 24 hours.

8.0µg/m³
Good

Latest hour (04:00 UTC), 0.5× the WHO 24-hour guideline.

Rank, worst first

24 hours–not enough data
7 days#471of 2,604, at 12.4 µg/m³
30 days#49of 2,624, at 89.6 µg/m³
This year#105of 2,447, at 55.7 µg/m³

Why it ranks here

Seasonal. Over the past year its worst months were December, averaging up to 187.5 µg/m³ against 9.5 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Muan's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

1102031Nov 2025DecJan 2026FebMarAprMayJunJulAugSepOct2025-11-01: 13.4 µg/m³2025-11-02: 8.0 µg/m³2025-11-03: 9.6 µg/m³2025-11-04: 16.3 µg/m³2025-11-05: 22.3 µg/m³2025-11-06: 30.5 µg/m³2025-11-07: 32.1 µg/m³2025-11-08: 17.4 µg/m³2025-11-09: 14.8 µg/m³2025-11-10: 7.4 µg/m³2025-11-11: 7.2 µg/m³2025-11-12: 16.4 µg/m³2025-11-13: 29.6 µg/m³2025-11-14: 7.9 µg/m³2025-11-15: 12.5 µg/m³2025-11-16: 14.2 µg/m³2025-11-17: 11.7 µg/m³2025-11-18: 12.6 µg/m³2025-11-19: 11.2 µg/m³2025-11-20: 17.1 µg/m³2025-11-21: 9.7 µg/m³2025-11-22: 13.4 µg/m³2025-11-23: 17.6 µg/m³2025-11-24: 29.6 µg/m³2025-11-25: 25.0 µg/m³2025-11-26: 8.1 µg/m³2025-11-27: 223.9 µg/m³2025-11-28: 7.4 µg/m³2025-11-29: 9.1 µg/m³2025-11-30: 12.7 µg/m³2025-12-01: 15.1 µg/m³2025-12-02: 843.0 µg/m³2025-12-03: 8.2 µg/m³2025-12-04: 9.8 µg/m³2025-12-05: 10.7 µg/m³2025-12-06: 8.2 µg/m³2025-12-07: 28.8 µg/m³2025-12-08: 15.4 µg/m³2025-12-09: 8.1 µg/m³2025-12-10: 1,270.0 µg/m³2025-12-11: 1,270.0 µg/m³2025-12-12: 219.1 µg/m³2025-12-13: 836.0 µg/m³2025-12-14: 9.0 µg/m³2025-12-15: 11.3 µg/m³2025-12-16: 24.1 µg/m³2025-12-17: 17.8 µg/m³2025-12-18: 12.1 µg/m³2025-12-19: 13.3 µg/m³2025-12-20: 227.9 µg/m³2025-12-21: 216.3 µg/m³2025-12-22: 633.0 µg/m³2025-12-23: 14.7 µg/m³2025-12-24: 8.6 µg/m³2025-12-25: 5.7 µg/m³2025-12-26: 5.1 µg/m³2025-12-27: 9.4 µg/m³2025-12-28: 9.7 µg/m³2025-12-29: 36.5 µg/m³2025-12-30: 9.8 µg/m³2025-12-31: 7.0 µg/m³2026-01-01: 5.5 µg/m³2026-01-02: 5.6 µg/m³2026-01-03: 9.2 µg/m³2026-01-04: 23.1 µg/m³2026-01-05: 15.4 µg/m³2026-01-06: 8.1 µg/m³2026-01-07: 11.3 µg/m³2026-01-08: 4.9 µg/m³2026-01-09: 8.3 µg/m³2026-01-10: 15.2 µg/m³2026-01-11: 5.5 µg/m³2026-01-12: 9.0 µg/m³2026-01-13: 17.0 µg/m³2026-01-14: 8.2 µg/m³2026-01-15: 41.9 µg/m³2026-01-16: 27.9 µg/m³2026-01-17: 25.9 µg/m³2026-01-18: 29.2 µg/m³2026-01-19: 15.7 µg/m³2026-01-20: 5.8 µg/m³2026-01-21: 5.7 µg/m³2026-01-22: 6.6 µg/m³2026-01-23: 9.9 µg/m³2026-01-24: 12.0 µg/m³2026-01-25: 7.0 µg/m³2026-01-26: 8.2 µg/m³2026-01-27: 11.1 µg/m³2026-01-28: 8.9 µg/m³2026-01-29: 14.2 µg/m³2026-01-30: 7.3 µg/m³2026-01-31: 8.9 µg/m³2026-02-01: 16.3 µg/m³2026-02-02: 17.0 µg/m³2026-02-03: 12.3 µg/m³2026-02-04: 18.2 µg/m³2026-02-05: 29.2 µg/m³2026-02-06: 11.8 µg/m³2026-02-07: 6.8 µg/m³2026-02-08: 5.5 µg/m³2026-02-09: 7.3 µg/m³2026-02-10: 13.0 µg/m³2026-02-11: 26.5 µg/m³2026-02-12: 27.9 µg/m³2026-02-13: 29.7 µg/m³2026-02-14: 28.9 µg/m³2026-02-15: 22.9 µg/m³2026-02-16: 10.1 µg/m³2026-02-17: 10.0 µg/m³2026-02-18: 15.2 µg/m³2026-02-19: 5.3 µg/m³2026-02-20: 21.8 µg/m³2026-02-21: 24.9 µg/m³2026-02-22: 18.9 µg/m³2026-02-23: 6.1 µg/m³2026-02-24: 8.9 µg/m³2026-02-25: 7.7 µg/m³2026-02-26: 9.2 µg/m³2026-02-27: 12.9 µg/m³2026-02-28: 12.9 µg/m³2026-03-01: 13.6 µg/m³2026-03-02: 5.4 µg/m³2026-03-03: 5.7 µg/m³2026-03-04: 11.1 µg/m³2026-03-05: 14.4 µg/m³2026-03-06: 14.0 µg/m³2026-03-07: 11.9 µg/m³2026-03-08: 10.1 µg/m³2026-03-09: 21.4 µg/m³2026-03-10: 16.8 µg/m³2026-03-11: 16.7 µg/m³2026-03-12: 29.9 µg/m³2026-03-13: 20.2 µg/m³2026-03-14: 18.9 µg/m³2026-03-15: 21.5 µg/m³2026-03-16: 35.0 µg/m³2026-03-17: 31.6 µg/m³2026-03-18: 15.9 µg/m³2026-03-19: 10.7 µg/m³2026-03-20: 9.4 µg/m³2026-03-21: 19.6 µg/m³2026-03-22: 22.8 µg/m³2026-03-23: 19.3 µg/m³2026-03-24: 28.2 µg/m³2026-03-25: 26.3 µg/m³2026-03-26: 23.3 µg/m³2026-03-27: 23.6 µg/m³2026-03-28: 31.2 µg/m³2026-03-29: 28.3 µg/m³2026-03-30: 24.1 µg/m³2026-03-31: 19.3 µg/m³2026-04-01: 18.0 µg/m³2026-04-02: 25.9 µg/m³2026-04-03: 24.9 µg/m³2026-04-04: 5.9 µg/m³2026-04-05: 10.9 µg/m³2026-04-06: 10.9 µg/m³2026-04-07: 5.7 µg/m³2026-04-08: 9.0 µg/m³2026-04-09: 7.8 µg/m³2026-04-10: 13.5 µg/m³2026-04-11: 30.2 µg/m³2026-04-12: 29.7 µg/m³2026-04-13: 15.3 µg/m³2026-04-14: 19.1 µg/m³2026-04-15: 19.4 µg/m³2026-04-16: 20.7 µg/m³2026-04-17: 13.0 µg/m³2026-04-18: 6.9 µg/m³2026-04-19: 11.6 µg/m³2026-04-20: 12.8 µg/m³2026-04-21: 13.6 µg/m³2026-04-22: 8.5 µg/m³2026-04-23: 10.6 µg/m³2026-04-24: 14.4 µg/m³2026-04-25: 12.1 µg/m³2026-04-26: 11.6 µg/m³2026-04-27: 10.5 µg/m³2026-04-28: 8.1 µg/m³2026-04-29: 11.8 µg/m³2026-04-30: 14.6 µg/m³2026-05-01: 18.8 µg/m³2026-05-02: 28.1 µg/m³2026-05-03: 11.8 µg/m³2026-05-04: 424.3 µg/m³2026-05-05: 216.5 µg/m³2026-05-06: 8.4 µg/m³2026-05-07: 10.6 µg/m³2026-05-08: 9.2 µg/m³2026-05-09: 424.5 µg/m³2026-05-10: 7.1 µg/m³2026-05-11: 7.9 µg/m³2026-05-12: 5.7 µg/m³2026-05-13: 8.4 µg/m³2026-05-14: 15.6 µg/m³2026-05-15: 17.2 µg/m³2026-05-16: 18.9 µg/m³2026-05-17: 15.1 µg/m³2026-05-18: 17.0 µg/m³2026-05-19: 432.1 µg/m³2026-05-20: 6.3 µg/m³2026-05-21: 657.0 µg/m³2026-05-22: 7.6 µg/m³2026-05-23: 11.9 µg/m³2026-05-24: 15.6 µg/m³2026-05-25: 11.5 µg/m³2026-05-26: 5.5 µg/m³2026-05-27: 212.7 µg/m³2026-05-28: 7.1 µg/m³2026-05-29: 21.2 µg/m³2026-05-30: 14.5 µg/m³2026-05-31: 14.9 µg/m³2026-06-01: 17.8 µg/m³2026-06-02: 9.4 µg/m³2026-06-03: 23.4 µg/m³2026-06-04: 12.1 µg/m³2026-06-05: 423.7 µg/m³2026-06-06: 8.7 µg/m³2026-06-07: 15.3 µg/m³2026-06-08: 14.2 µg/m³2026-06-09: 219.2 µg/m³2026-06-10: 633.9 µg/m³2026-06-11: 218.6 µg/m³2026-06-12: 222.1 µg/m³2026-06-13: 220.2 µg/m³2026-06-14: 10.5 µg/m³2026-06-15: 222.0 µg/m³2026-06-16: 10.6 µg/m³2026-06-17: 6.7 µg/m³2026-06-18: 3.0 µg/m³2026-06-19: 212.4 µg/m³2026-06-20: 3.7 µg/m³2026-06-21: 4.4 µg/m³2026-06-22: 632.0 µg/m³2026-06-23: 11.1 µg/m³2026-06-24: 3.4 µg/m³2026-06-25: 4.9 µg/m³2026-06-26: 5.6 µg/m³2026-06-27: 11.6 µg/m³2026-06-28: 12.9 µg/m³2026-06-29: 11.3 µg/m³2026-06-30: 13.1 µg/m³2026-07-01: 4.4 µg/m³2026-07-02: 6.3 µg/m³2026-07-03: 6.8 µg/m³2026-07-04: 5.4 µg/m³2026-07-05: 3.9 µg/m³2026-07-06: 5.3 µg/m³2026-07-07: 7.8 µg/m³2026-07-08: 838.0 µg/m³2026-07-09: 4.9 µg/m³2026-07-10: 9.7 µg/m³2026-07-11: 8.0 µg/m³2026-07-12: 11.3 µg/m³2026-07-13: 8.6 µg/m³2026-07-14: 8.5 µg/m³2026-07-15: 11.6 µg/m³2026-07-16: 17.3 µg/m³2026-07-17: 18.0 µg/m³2026-07-18: 18.7 µg/m³2026-07-19: 9.4 µg/m³2026-07-20: 12.0 µg/m³2026-07-21: 12.2 µg/m³2026-07-22: 13.2 µg/m³2026-07-23: 430.1 µg/m³2026-07-24: 11.7 µg/m³2026-07-25: 1,049.5 µg/m³2026-07-26: 7.0 µg/m³2026-07-27: 6.5 µg/m³2026-07-28: 6.6 µg/m³2026-07-29: 6.6 µg/m³2026-07-30: 217.0 µg/m³2026-07-31: 12.3 µg/m³2026-08-01: 16.3 µg/m³2026-08-02: 10.4 µg/m³2026-08-03: 223.7 µg/m³2026-08-04: 24.1 µg/m³2026-08-05: 19.5 µg/m³2026-08-06: 16.2 µg/m³2026-08-07: 14.9 µg/m³2026-08-08: 9.8 µg/m³2026-08-09: 10.5 µg/m³2026-08-10: 10.0 µg/m³2026-08-11: 426.7 µg/m³2026-08-12: 10.1 µg/m³2026-08-13: 10.7 µg/m³2026-08-14: 10.9 µg/m³2026-08-15: 12.2 µg/m³2026-08-16: 215.7 µg/m³2026-08-17: 7.8 µg/m³2026-08-18: 9.3 µg/m³2026-08-19: 7.4 µg/m³2026-08-20: 8.4 µg/m³2026-08-21: 430.0 µg/m³2026-08-22: 11.4 µg/m³2026-08-23: 14.3 µg/m³2026-08-24: 431.9 µg/m³2026-08-25: 9.3 µg/m³2026-08-26: 15.0 µg/m³2026-08-27: 18.9 µg/m³2026-08-28: 8.7 µg/m³2026-08-29: 5.5 µg/m³2026-08-30: 4.8 µg/m³2026-08-31: 6.0 µg/m³2026-09-01: 6.1 µg/m³2026-09-02: 425.0 µg/m³2026-09-03: 14.3 µg/m³2026-09-04: 218.4 µg/m³2026-09-05: 8.2 µg/m³2026-09-06: 9.6 µg/m³2026-09-07: 845.5 µg/m³2026-09-08: 16.0 µg/m³2026-09-09: 13.3 µg/m³2026-09-10: 9.6 µg/m³2026-09-11: 219.5 µg/m³2026-09-12: 14.6 µg/m³2026-09-13: 223.9 µg/m³2026-09-14: 18.4 µg/m³2026-09-15: 220.7 µg/m³2026-09-16: 17.3 µg/m³2026-09-17: 13.7 µg/m³2026-09-18: 11.4 µg/m³2026-09-19: 219.3 µg/m³2026-09-20: 13.4 µg/m³2026-09-21: 19.9 µg/m³2026-09-22: 18.6 µg/m³2026-09-23: 16.4 µg/m³2026-09-24: 15.5 µg/m³2026-09-25: 18.2 µg/m³2026-09-26: 10.9 µg/m³2026-09-27: 8.4 µg/m³2026-09-28: 13.4 µg/m³2026-09-29: 12.5 µg/m³2026-09-30: 14.9 µg/m³2026-10-01: 8.5 µg/m³
141 of 365 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Last 4 days, hour by hour

15302026-10-02 00:00 UTC: 17.0 µg/m³2026-10-02 01:00 UTC: 18.0 µg/m³2026-10-02 02:00 UTC: 18.0 µg/m³2026-10-02 03:00 UTC: 11.0 µg/m³2026-10-02 04:00 UTC: 8.0 µg/m³Sep 29Sep 30Oct 1Oct 2
Times in UTC. Dashed line: WHO 24-hour guideline (15 µg/m³).

Where it stood each day

Top 10Top 100#1#10#100#1,000#2,835NovDecJanFebMarAprMayJunJulAugSep#291
Its rank on each day's world board, #1 being the most polluted city that day. The scale is logarithmic: each step down is ten times as many cities. See it among every city.

2026 against 2025, month by month

15Jan 2025: 15.0 µg/m³Jan 2026: 12.7 µg/m³JanFeb 2025: 13.0 µg/m³Feb 2026: 15.6 µg/m³FebMar 2025: 18.9 µg/m³Mar 2026: 19.4 µg/m³MarApr 2025: 15.2 µg/m³Apr 2026: 14.2 µg/m³AprMay 2025: 13.0 µg/m³May 2026: 86.5 µg/m³MayJun 2025: 13.1 µg/m³Jun 2026: 107.3 µg/m³JunJul 2025: 10.3 µg/m³Jul 2026: 90.0 µg/m³JulAug 2025: 7.5 µg/m³Aug 2026: 65.5 µg/m³AugSep 2025: 7.3 µg/m³Sep 2026: 89.6 µg/m³SepOct 2025: 9.6 µg/m³OctNov 2025: 22.3 µg/m³NovDec 2025: 187.5 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 12.4 µg/m³12.420252025: 9.4 µg/m³9.4
Mean PM2.5 for 25 Sept to 1 Oct in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
무안읍Permission requested (AirKorea, 2026-10-01)Korea Air Ministry of EnvironmentReference
함평읍Permission requested (AirKorea, 2026-10-01)Korea Air Ministry of EnvironmentReference

The city's value is the median of its reference monitors each hour, when at least a third of them report (three are always enough); low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Use this page

SmogRank, PM2.5 daily means, Muan, South Korea, 2 Oct 2025 – 1 Oct 2026, smogrank.com/kr/muan (accessed 2 Oct 2026).

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Other cities in South Korea

30-day averages, µg/m³. All of South Korea.

Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.