City report · Zhejiang, China
Yuyao Air quality today
Air quality in Yuyao currently reads AQI 119 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 119
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 44.3
- tree cover
- 16.5%
- trees in this area
- 50.5K
- more trees needed
- 56.6K
Measured across a 2 km radius around Yuyao, Ningbo, Zhejiang, China (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yuyao · AQI 119 (Unhealthy for sensitive groups)
Yuyao's tree count comes to 50,489 trees across 12.24 km² of land, 18 points below the 35% tree-cover level considered healthy for this area, so roughly 56,608 more trees would close the gap.
Air quality detail
Air quality in Yuyao today: AQI 119, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 17 ground-station cities within 145 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 17 station cities within 145 km, e.g. Ningbo and Shaoxing
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
44.3
PM10
67.1
NO₂
65.6
O₃
0.0
SO₂
12.6
CO
834.0
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Yuyao's daily AQI at 92 on average, from 64 on Nov 8 to an hourly peak of 156 on Nov 11.
Where Yuyao stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yuyao: Critically low
16.5% tree cover against a 35% healthy-neighborhood target, across 12.24 km² of land.
Trees in this area
50,489
Target trees
107,097
More trees needed
56,608
CO₂ if planted / yr
1,245 t
Deforestation · 2001–2025
How much forest has Yuyao lost?
Since 2001, the area within 10 km of Yuyao has lost about 343 hectares of forest (about 480 football pitches): 4.5% of the forest it had in 2000. Most of it (79%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 343 haabout 480 football pitches
- Share of its forest
- 4.5%of what there was in 2000
- Cleared for good
- 272 hadeforestation: turned into farms, mines or towns
The worst year was 2022, when about 36 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 | 10 ha | 5 ha | 15 ha |
| 2003 | 3 ha | under 1 ha | 4 ha |
| 2004 | 13 ha | 1 ha | 14 ha |
| 2005 | 9 ha | under 1 ha | 10 ha |
| 2006 | 5 ha | 2 ha | 6 ha |
| 2007 | 4 ha | 2 ha | 6 ha |
| 2008 | 14 ha | 6 ha | 20 ha |
| 2009 | 17 ha | 4 ha | 20 ha |
| 2010 | 4 ha | under 1 ha | 5 ha |
| 2011 | 7 ha | 2 ha | 9 ha |
| 2012 | 15 ha | 5 ha | 20 ha |
| 2013 | 6 ha | 1 ha | 7 ha |
| 2014 | 8 ha | 5 ha | 12 ha |
| 2015 | 8 ha | 2 ha | 10 ha |
| 2016 | 21 ha | 7 ha | 27 ha |
| 2017 | 25 ha | 3 ha | 28 ha |
| 2018 | 8 ha | 1 ha | 9 ha |
| 2019 | 6 ha | under 1 ha | 6 ha |
| 2020 | 24 ha | 6 ha | 30 ha |
| 2021 | 12 ha | 3 ha | 15 ha |
| 2022 | 33 ha | 2 ha | 36 ha |
| 2023 | 7 ha | 3 ha | 10 ha |
| 2024 | 3 ha | under 1 ha | 3 ha |
| 2025 | 11 ha | 9 ha | 21 ha |
What is causing deforestation around Yuyao?
- Towns and roadscleared for good46% · 159 ha
- Farms, pasture and plantationscleared for good18% · 63 ha
- Loggingcan grow back17% · 60 ha
Also: mining and energy, 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
- 10,700 ha
- Forest in 2020
- 11,100 ha
- Overall change
- +408 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yuyao grew from about 10,700 hectares to 11,100 hectares, a net gain of about 408 hectares (+3.8%). New forest grew on about 696 hectares, while 289 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 Yuyao
What is the air quality (AQI) in Yuyao right now?
The latest reading for Yuyao shows an AQI of 119 (Unhealthy for sensitive groups), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 17 ground-station cities within 145 km, US EPA index. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Yuyao today?
At AQI 119 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Yuyao been like this week?
Over the last 7 days, the CAMS air-quality model put Yuyao's daily AQI at 92 on average, from 64 on Nov 8 to an hourly peak of 156 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Yuyao lost since 2001?
Since 2001, the area within 10 km of Yuyao has lost about 343 hectares of forest (about 480 football pitches): 4.5% of the forest it had in 2000. Most of it (79%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Yuyao grew from about 10,700 hectares to 11,100 hectares, a net gain of about 408 hectares (+3.8%). New forest grew on about 696 hectares, while 289 hectares were lost.
What is the tree count in Yuyao?
Yuyao has an estimated 50,489 trees across the 12.24 km² of land measured — 16.5% tree cover, 18 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Yuyao need?
Yuyao needs roughly 56,608 more trees to close a 18-point shortfall against its 35% tree-cover target — about 1,245 t of extra CO₂ absorbed per year once grown.
How are Yuyao'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 Yuyao; the tree count is an estimate derived from that cover.
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