City report · Heilongjiang, China
Tieli Air quality today
Air quality in Tieli currently reads AQI 152 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 152
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 55.9
- tree cover
- 8.8%
- trees in this area
- 27.3K
- more trees needed
- 96.9K
Measured across a 2 km radius around Tieli, Yichun, Heilongjiang, China (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tieli · AQI 152 (Unhealthy)
Tieli's tree count comes to 27,342 trees across 12.43 km² of land, 31 points below the 40% tree-cover level considered healthy for this area, so roughly 96,939 more trees would close the gap.
Air quality detail
Air quality in Tieli today: AQI 152, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 8 station cities within 245 km, e.g. Suihua and Harbin
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
55.9
PM10
48.1
NO₂
9.1
O₃
52.0
SO₂
10.7
CO
429.0
- 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 Tieli's daily AQI at 79 on average, from 56 on Nov 7 to an hourly peak of 140 on Nov 11.
Where Tieli stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tieli: Critically low
8.8% tree cover against a 40% healthy-neighborhood target, across 12.43 km² of land.
Trees in this area
27,342
Target trees
124,281
More trees needed
96,939
CO₂ if planted / yr
2,133 t
Deforestation · 2001–2025
How much forest has Tieli lost?
Since 2001, the area within 10 km of Tieli has lost about 69 hectares of forest (about 96 football pitches): 2% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 11 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from September 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 69 haabout 96 football pitches
- Share of its forest
- 2%of what there was in 2000
- Cleared for good
- 11 hadeforestation: turned into farms, mines or towns
The worst year was 2023, when about 21 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 | 2 ha | 2 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 1 ha | 1 ha | 2 ha |
| 2008 | under 1 ha | 20 ha | 20 ha |
| 2009 | 5 ha | under 1 ha | 5 ha |
| 2010 | under 1 ha | 1 ha | 2 ha |
| 2011 | under 1 ha | 2 ha | 2 ha |
| 2012 | under 1 ha | 4 ha | 4 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 | 2 ha | 2 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 | 2 ha | under 1 ha | 2 ha |
| 2022 | under 1 ha | under 1 ha | 2 ha |
| 2023 | under 1 ha | 21 ha | 21 ha |
| 2024 | under 1 ha | 1 ha | 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Tieli?
- Loggingcan grow back73% · 50 ha
- Farms, pasture and plantationscleared for good11% · 8 ha
- Towns and roadscleared for good4.9% · 3 ha
Also: 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.
Forest gained and lost, 2000–2020
- Forest in 2000
- 2,660 ha
- Forest in 2020
- 2,660 ha
- Overall change
- +2 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tieli stayed about the same size, at about 2,660 hectares: new forest grew on about 37 hectares, and about 35 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 Tieli
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Tieli with anywhere
This place
Tieli
Use this data
Put Tieli's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Tieli
What is the air quality (AQI) in Tieli right now?
The latest reading for Tieli shows an AQI of 152 (Unhealthy), observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 245 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 Tieli today?
At AQI 152 (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 Tieli been like this week?
Over the last 7 days, the CAMS air-quality model put Tieli's daily AQI at 79 on average, from 56 on Nov 7 to an hourly peak of 140 on Nov 11. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Tieli lost since 2001?
Since 2001, the area within 10 km of Tieli has lost about 69 hectares of forest (about 96 football pitches): 2% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 11 hectares (17%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Tieli stayed about the same size, at about 2,660 hectares: new forest grew on about 37 hectares, and about 35 hectares were lost.
What is the tree count in Tieli?
Tieli has an estimated 27,342 trees across the 12.43 km² of land measured — 8.8% tree cover, 31 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Tieli need?
Tieli needs roughly 96,939 more trees to close a 31-point shortfall against its 40% tree-cover target — about 2,133 t of extra CO₂ absorbed per year once grown.
How are Tieli'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 Tieli; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address