City report · Gyeongsangbuk-do, South Korea
Gumi Air quality today
Air quality in Gumi currently reads AQI 89 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 89
Moderate
- PM2.5, fine particles (µg/m³)
- 29.5
- tree cover
- 55.6%
- trees in this area
- 172K
- more trees needed
- 0
Measured across a 2 km radius around Gyeongeun-ro, Gumi-si, Gyeongsangbuk-do, South Korea (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Gumi · AQI 89 (Moderate)
Gumi's tree count comes to 172,052 trees across 12.38 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Gumi today: AQI 89, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · 공단동, 4.4 km away · median of 5 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.5
PM10
39.0
NO₂
42.7
O₃
19.2
SO₂
6.9
CO
733.2
Data: OpenAQ · Korea Air Ministry of Environment, Korea Environment Corporation · AirKorea
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Gumi's daily AQI at 62 on average, from 46 on Nov 6 to an hourly peak of 142 on Nov 5.
Where Gumi stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gumi: Healthy tree cover
55.6% tree cover against a 30% healthy-neighborhood target, across 12.38 km² of land.
Trees in this area
172,052
Target trees
172,052
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Gumi lost?
Since 2001, the area within 10 km of Gumi has lost about 395 hectares of forest (about 550 football pitches): 3.1% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from September 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 395 haabout 550 football pitches
- Share of its forest
- 3.1%of what there was in 2000
- Cleared for good
- 291 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 39 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 10 ha | under 1 ha | 10 ha |
| 2002 | 24 ha | under 1 ha | 25 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 9 ha | under 1 ha | 9 ha |
| 2005 | 8 ha | 4 ha | 12 ha |
| 2006 | 7 ha | 2 ha | 8 ha |
| 2007 | 25 ha | under 1 ha | 25 ha |
| 2008 | 13 ha | under 1 ha | 14 ha |
| 2009 | 10 ha | 2 ha | 12 ha |
| 2010 | 16 ha | under 1 ha | 16 ha |
| 2011 | 3 ha | under 1 ha | 3 ha |
| 2012 | 22 ha | 8 ha | 30 ha |
| 2013 | 3 ha | under 1 ha | 3 ha |
| 2014 | 4 ha | 5 ha | 9 ha |
| 2015 | 14 ha | 5 ha | 19 ha |
| 2016 | 16 ha | 11 ha | 27 ha |
| 2017 | 24 ha | 9 ha | 33 ha |
| 2018 | 13 ha | 6 ha | 19 ha |
| 2019 | 11 ha | 7 ha | 18 ha |
| 2020 | 7 ha | 8 ha | 15 ha |
| 2021 | 5 ha | under 1 ha | 5 ha |
| 2022 | 13 ha | 1 ha | 15 ha |
| 2023 | 16 ha | under 1 ha | 16 ha |
| 2024 | 10 ha | 3 ha | 12 ha |
| 2025 | 9 ha | 29 ha | 39 ha |
What is causing deforestation around Gumi?
- Towns and roadscleared for good69% · 271 ha
- Loggingcan grow back24% · 95 ha
- Mining and energycleared for good4.9% · 19 ha
Also: unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 14,900 ha
- Forest in 2020
- 14,600 ha
- Overall change
- −254 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gumi stayed about the same size, at about 14,600 hectares: new forest grew on about 158 hectares, and about 413 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
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. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Gumi
Same 2 km radius, same index — so they compare directly.
- Gimcheon19.4 km
South Korea
- Tree cover
- 31%
- Air quality
- 78
- Daegu35.5 km
South Korea
- Tree cover
- 4%
- Air quality
- 75
- Sangju37.1 km
South Korea
- Tree cover
- 17%
- Air quality
- 84
- Gyeongsan-si48.5 km
South Korea
- Tree cover
- 19%
- Air quality
- 68
- Andong61.1 km
South Korea
- Tree cover
- 34%
- Air quality
- 70
- Gyeongju84.4 km
South Korea
- Tree cover
- 13%
- Air quality
- 58
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Frequently asked
Questions about Gumi
What is the air quality (AQI) in Gumi right now?
The latest reading for Gumi shows an AQI of 89 (Moderate), measured Nov 12, 00:00 local time by 5 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 공단동, 4.4 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Gumi today?
At AQI 89 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Gumi been like this week?
Over the last 7 days, the CAMS air-quality model put Gumi's daily AQI at 62 on average, from 46 on Nov 6 to an hourly peak of 142 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Gumi lost since 2001?
Since 2001, the area within 10 km of Gumi has lost about 395 hectares of forest (about 550 football pitches): 3.1% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Gumi stayed about the same size, at about 14,600 hectares: new forest grew on about 158 hectares, and about 413 hectares were lost.
What is the tree count in Gumi?
Gumi has an estimated 172,052 trees across the 12.38 km² of land measured — 55.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Gumi need?
Gumi has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Gumi's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Gyeongeun-ro, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Gyeongeun-ro; the tree count is an estimate derived from that cover.
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