City report · Fujian, China
Sanming Air quality today
Air quality in Sanming currently reads AQI 75 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 75
Moderate
- PM2.5, fine particles (µg/m³)
- 22.1
- tree cover
- 43.0%
- trees in this area
- 126K
- more trees needed
- 0
Measured across a 2 km radius around Sanyuan District, Sanming, Fujian, China (12.57 km²), from a satellite image of Sep 17, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sanming · AQI 75 (Moderate)
Sanming's tree count comes to 126,038 trees across 11.73 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Sanming today: AQI 75, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · sān gāng, Sanming (三明三钢), 1.6 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
22.1
PM10
25.9
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Department of Ecology and Environment of Fujian Province (福建省生态环境厅), China National Urban air quality real-time publishing platform (全国城市空气质量实时发布平台)
- 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 Sanming's daily AQI at 48 on average, from 35 on Nov 9 to an hourly peak of 91 on Nov 4.
Where Sanming stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sanming: Healthy tree cover
43.0% tree cover against a 30% healthy-neighborhood target, across 11.73 km² of land.
Trees in this area
126,038
Target trees
126,038
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Sanming lost?
Since 2001, the area within 10 km of Sanming has lost about 5,520 hectares of forest (about 7,700 football pitches): 23% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,360 hectares (25%) was deforestation: forest cleared for good for farms, mines or towns.
2018: satellite photo from December 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 5,520 haabout 7,700 football pitches
- Share of its forest
- 23%of what there was in 2000
- Cleared for good
- 1,360 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 261 hectares a year in 2021–2025, up from 177 hectares a year in 2016–2020. The worst year was 2011, when about 374 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 | 16 ha | 87 ha | 103 ha |
| 2002 | 14 ha | 97 ha | 111 ha |
| 2003 | 17 ha | 104 ha | 121 ha |
| 2004 | 48 ha | 116 ha | 163 ha |
| 2005 | 33 ha | 102 ha | 135 ha |
| 2006 | 135 ha | 222 ha | 357 ha |
| 2007 | 53 ha | 112 ha | 165 ha |
| 2008 | 135 ha | 174 ha | 309 ha |
| 2009 | 75 ha | 223 ha | 298 ha |
| 2010 | 46 ha | 179 ha | 225 ha |
| 2011 | 146 ha | 228 ha | 374 ha |
| 2012 | 64 ha | 156 ha | 219 ha |
| 2013 | 18 ha | 140 ha | 158 ha |
| 2014 | 119 ha | 231 ha | 350 ha |
| 2015 | 78 ha | 159 ha | 237 ha |
| 2016 | 17 ha | 176 ha | 193 ha |
| 2017 | 47 ha | 138 ha | 185 ha |
| 2018 | 55 ha | 139 ha | 194 ha |
| 2019 | 25 ha | 121 ha | 146 ha |
| 2020 | 68 ha | 98 ha | 166 ha |
| 2021 | 32 ha | 173 ha | 204 ha |
| 2022 | 18 ha | 199 ha | 217 ha |
| 2023 | 44 ha | 285 ha | 329 ha |
| 2024 | 30 ha | 243 ha | 273 ha |
| 2025 | 28 ha | 256 ha | 284 ha |
What is causing deforestation around Sanming?
- Loggingcan grow back75% · 4,150 ha
- Towns and roadscleared for good19% · 1,020 ha
- Mining and energycleared for good6.1% · 335 ha
Also: farms, pasture and plantations, 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
- 26,800 ha
- Forest in 2020
- 25,300 ha
- Overall change
- −1,490 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sanming shrank from about 26,800 hectares to 25,300 hectares, a net loss of about 1,490 hectares (−5.6%). New forest grew on about 188 hectares, but 1,680 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
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Frequently asked
Questions about Sanming
What is the air quality (AQI) in Sanming right now?
The latest reading for Sanming shows an AQI of 75 (Moderate), measured Nov 11, 23:00 local time by the sān gāng, Sanming (三明三钢) ground monitoring station, 1.6 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Sanming today?
At AQI 75 (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 Sanming been like this week?
Over the last 7 days, the CAMS air-quality model put Sanming's daily AQI at 48 on average, from 35 on Nov 9 to an hourly peak of 91 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Sanming lost since 2001?
Since 2001, the area within 10 km of Sanming has lost about 5,520 hectares of forest (about 7,700 football pitches): 23% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 1,360 hectares (25%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 261 hectares a year in 2021–2025, up from 177 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Sanming shrank from about 26,800 hectares to 25,300 hectares, a net loss of about 1,490 hectares (−5.6%). New forest grew on about 188 hectares, but 1,680 hectares were lost.
What is the tree count in Sanming?
Sanming has an estimated 126,038 trees across the 11.73 km² of land measured — 43.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Sanming need?
Sanming has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Sanming's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sanyuan District, 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 Sanyuan District; the tree count is an estimate derived from that cover.
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