City report · Jilin, China
Jiutai Air quality today
Air quality in Jiutai currently reads AQI 158 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 158
Unhealthy
- PM2.5, fine particles (µg/m³)
- 60.3
- tree cover
- 8.1%
- trees in this area
- 25.3K
- more trees needed
- 99.8K
Measured across a 2 km radius around Jiutai District, Changchun, Jilin, China (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Jiutai · AQI 158 (Unhealthy)
Jiutai's tree count comes to 25,345 trees across 12.52 km² of land, 32 points below the 40% tree-cover level considered healthy for this area, so roughly 99,816 more trees would close the gap.
Air quality detail
Air quality in Jiutai today: AQI 158, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 14:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 165 km, e.g. Jilin City and Songyuan
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
60.3
PM10
40.7
NO₂
19.7
O₃
47.0
SO₂
11.0
CO
464.0
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Jiutai's daily AQI at 90 on average, from 53 on Nov 6 to an hourly peak of 186 on Nov 10.
Where Jiutai stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jiutai: Critically low
8.1% tree cover against a 40% healthy-neighborhood target, across 12.52 km² of land.
Trees in this area
25,345
Target trees
125,161
More trees needed
99,816
CO₂ if planted / yr
2,196 t
Deforestation · 2001–2025
How much forest has Jiutai lost?
There was very little forest around Jiutai in 2000, about 12 hectares, and about 7 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
The worst year was 2021, when about 3 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | 1 ha | 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | 3 ha | 3 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | 2 ha | 2 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Jiutai?
- Loggingcan grow back93% · 7 ha
- Towns and roadscleared for good4.1% · under 1 ha
- Unknown causescause unknown1.4% · under 1 ha
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
- 368 ha
- Forest in 2020
- 437 ha
- Overall change
- +69 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Jiutai grew from about 368 hectares to 437 hectares, a net gain of about 69 hectares (+19%). New forest grew on about 88 hectares, while 19 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 Jiutai
Same 2 km radius, same index — so they compare directly.
- Dehui44.2 km
China
- Tree cover
- 8%
- Air quality
- 240
- Changchun50.5 km
China
- Tree cover
- 17%
- Air quality
- 162
- Jilin67.6 km
China
- Tree cover
- 11%
- Air quality
- 119
- Jishu79.5 km
China
- Tree cover
- 39%
- Air quality
- 169
- Yushu, Jilin94.0 km
China
- Tree cover
- 7%
- Air quality
- 178
- Gongzhuling108.6 km
China
- Tree cover
- 11%
- Air quality
- 212
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Frequently asked
Questions about Jiutai
What is the air quality (AQI) in Jiutai right now?
The latest reading for Jiutai shows an AQI of 158 (Unhealthy), observed Nov 11, 14:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 165 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Jiutai today?
At AQI 158 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Jiutai been like this week?
Over the last 7 days, the CAMS air-quality model put Jiutai's daily AQI at 90 on average, from 53 on Nov 6 to an hourly peak of 186 on Nov 10. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Jiutai lost since 2001?
There was very little forest around Jiutai in 2000, about 12 hectares, and about 7 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here. Comparing satellite maps from 2000 and 2020, the forest around Jiutai grew from about 368 hectares to 437 hectares, a net gain of about 69 hectares (+19%). New forest grew on about 88 hectares, while 19 hectares were lost.
What is the tree count in Jiutai?
Jiutai has an estimated 25,345 trees across the 12.52 km² of land measured — 8.1% tree cover, 32 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Jiutai need?
Jiutai needs roughly 99,816 more trees to close a 32-point shortfall against its 40% tree-cover target — about 2,196 t of extra CO₂ absorbed per year once grown.
How are Jiutai's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Jiutai District; the tree count is an estimate derived from that cover.
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