China · Gansu · 14 cities
Air quality in Gansu today The AQI right now, city by city
Right now, Dunhuang has the cleanest air of the 14 cities we track in Gansu (AQI 39, Good), and Lanzhou the worst (AQI 154, Unhealthy). Tianshui has the most tree cover, at 31.4% — #135 of 639 cities measured in China.
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.
AQI 92
Average right now
Moderate
- cities tracked
- 14
- average tree cover
- 11.9%
- China: 22.9%
- worst air now: Lanzhou
- 154
- cleanest air now: Dunhuang
- 39
Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf, refreshed hourly.
Gansu · average AQI 92
Air quality today across Gansu, city by city
| Lanzhou | 154Unhealthy | 11.6% | 85.0K | #515 of 639 |
|---|---|---|---|---|
| Qingyang | 82Moderate | 8.6% | 67.2K | #584 of 639 |
| Tianshui | 79Moderate | 31.4% | — | #135 of 639 |
| Wuwei | 124Unhealthy for sensitive groups | 11.9% | 72.6K | #505 of 639 |
| Zhangye | 54Moderate | 11.0% | 59.6K | #526 of 639 |
| Pingliang | 132Unhealthy for sensitive groups | 9.3% | 80.7K | #569 of 639 |
| Jiuquan | 75Moderate | 12.4% | 55.1K | #494 of 639 |
| Dingxi | 76Moderate | 7.4% | 71.0K | #604 of 639 |
| Baiyin | 137Unhealthy for sensitive groups | 8.3% | 83.8K | #588 of 639 |
| Linxia Chengguanzhen | 140Unhealthy for sensitive groups | 5.9% | 91.3K | #624 of 639 |
| Jiayuguan | 75Moderate | 11.2% | 59.0K | #520 of 639 |
| Jinchang | 60Moderate | 10.4% | 61.5K | #540 of 639 |
| Dunhuang | 39Good | 12.9% | 53.7K | #474 of 639 |
| Gangu Chengguanzhen | 62Moderate | 14.9% | 47.4K | #435 of 639 |
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 China.
Deforestation · 2001–2025
How much forest has Gansu lost?
Since 2001, Gansu has lost about 13,500 hectares of forest (about 19,000 football pitches): under 1% of the forest it had in 2000. The biggest cause was logging (38%), after which forest can grow back. About 3,340 hectares (25%) was deforestation: forest cleared for good for farms, mines or towns.
- Forest lost since 2001
- 13,500 haabout 19,000 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 3,340 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 | 627 ha | 1,330 ha | 1,960 ha |
| 2002 | 212 ha | 836 ha | 1,050 ha |
| 2003 | 112 ha | 714 ha | 826 ha |
| 2004 | 183 ha | 1,530 ha | 1,710 ha |
| 2005 | 66 ha | 383 ha | 449 ha |
| 2006 | 96 ha | 322 ha | 418 ha |
| 2007 | 273 ha | 774 ha | 1,050 ha |
| 2008 | 323 ha | 726 ha | 1,050 ha |
| 2009 | 195 ha | 267 ha | 462 ha |
| 2010 | 132 ha | 504 ha | 636 ha |
| 2011 | 101 ha | 215 ha | 316 ha |
| 2012 | 456 ha | 879 ha | 1,340 ha |
| 2013 | 28 ha | 70 ha | 98 ha |
| 2014 | 44 ha | 74 ha | 118 ha |
| 2015 | 5 ha | 6 ha | 11 ha |
| 2016 | 8 ha | 692 ha | 700 ha |
| 2017 | 14 ha | 45 ha | 59 ha |
| 2018 | 22 ha | 115 ha | 137 ha |
| 2019 | 26 ha | 42 ha | 69 ha |
| 2020 | 54 ha | 34 ha | 88 ha |
| 2021 | 39 ha | 66 ha | 105 ha |
| 2022 | 138 ha | 150 ha | 288 ha |
| 2023 | 71 ha | 17 ha | 88 ha |
| 2024 | 66 ha | 64 ha | 129 ha |
| 2025 | 44 ha | 328 ha | 372 ha |
Forest loss has stayed about the same: about 196 hectares a year in 2021–2025, against 210 hectares a year in 2016–2020. The worst year was 2001, when about 1,960 hectares of forest were lost.
What is causing deforestation in Gansu?
- Loggingcan grow back38% · 5,080 ha
- Farms, pasture and plantationscleared for good17% · 2,290 ha
- Storms, floods and other natural causescan grow back11% · 1,480 ha
Also: wildfires, towns and roads, mining and energy, shifting farming, 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
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