South Korea · Jeju-do · 2 cities
Air quality in Jeju-do today The AQI right now, city by city
Right now, Jeju City has the cleanest air of the 2 cities we track in Jeju-do (AQI 39, Good), and Seogwipo the worst (AQI 50, Good). Seogwipo has the most tree cover, at 43.3% — #10 of 56 cities measured in South Korea.
Every city is measured the same way, over the same 2 km around its center: the air quality right now, from ground stations where there are any, and its tree cover.
- cities tracked
- 2
- average tree cover
- 25.7%
- South Korea: 28.4%
- worst air now: Seogwipo
- 50
- cleanest air now: Jeju City
- 39
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Jeju-do
Air quality today across Jeju-do, city by city
| Jeju City | 39Good | 8.1% | 53.3K | #52 of 56 |
|---|---|---|---|---|
| Seogwipo | 50Good | 43.3% | — | #10 of 56 |
Air quality is the US AQI from ground monitoring stations via OpenAQ where available, otherwise the Open-Meteo / CAMS model, refreshed hourly. Tree cover is measured within 2 km of each city center from Sentinel-2 imagery; the rank compares every city measured in South Korea.
Deforestation · 2001–2025
How much forest has Jeju-do lost?
Since 2001, Jeju-do has lost about 2,030 hectares of forest (about 2,800 football pitches): 2.3% of the forest it had in 2000. Most of it (78%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
- Forest lost since 2001
- 2,030 haabout 2,800 football pitches
- Share of its forest
- 2.3%of what there was in 2000
- Cleared for good
- 1,590 hadeforestation: turned into farms, mines or towns
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 3 ha | 1 ha | 4 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 110 ha | 24 ha | 134 ha |
| 2005 | 4 ha | 2 ha | 6 ha |
| 2006 | 134 ha | 31 ha | 165 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 263 ha | 76 ha | 339 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 496 ha | 102 ha | 598 ha |
| 2013 | 48 ha | 13 ha | 61 ha |
| 2014 | 89 ha | 30 ha | 119 ha |
| 2015 | 32 ha | 15 ha | 47 ha |
| 2016 | 82 ha | 11 ha | 93 ha |
| 2017 | 27 ha | 8 ha | 35 ha |
| 2018 | 12 ha | 9 ha | 22 ha |
| 2019 | 25 ha | 11 ha | 36 ha |
| 2020 | 25 ha | 5 ha | 30 ha |
| 2021 | 35 ha | 9 ha | 43 ha |
| 2022 | 26 ha | 17 ha | 43 ha |
| 2023 | 65 ha | 14 ha | 79 ha |
| 2024 | 34 ha | 43 ha | 77 ha |
| 2025 | 77 ha | 27 ha | 104 ha |
Forest loss is speeding up: about 69 hectares a year in 2021–2025, up from 43 hectares a year in 2016–2020. The worst year was 2012, when about 598 hectares of forest were lost.
What is causing deforestation in Jeju-do?
- Farms, pasture and plantationscleared for good39% · 791 ha
- Towns and roadscleared for good36% · 736 ha
- Loggingcan grow back13% · 260 ha
Also: mining and energy, wildfires, storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. How it's measured
Other provinces in South Korea
Clean-air buying guides
Cleaner air at home in Jeju-do
Picked by tested clean-air delivery rate (CADR), noise and running cost, from independent test labels. No brand pays to be listed.
- The best air purifiers for wildfire smoke and smog
Air purifiers that keep up with wildfire smoke and winter smog, ranked by verified smoke CADR, with the room each one clears on a smoky day.
- The best air purifiers for bedrooms: quiet picks sized for your room
Quiet HEPA air purifiers for bedrooms, compared on what matters at night: noise on the lowest setting (from 20 dB), verified room size and filter cost.
- The best air purifiers under $200
Good HEPA air purifiers under $200 at the makers' own prices, compared on verified clean air, room size and what the filters cost each year.
Your own street