City report · Shandong, China
Yishui Air quality today
Air quality in Yishui currently reads AQI 156 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 156
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 63.2
- tree cover
- 9.3%
- trees in this area
- 27.3K
- more trees needed
- 90.1K
Measured across a 2 km radius around Yishui County, Linyi, Shandong, China (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yishui · AQI 156 (Unhealthy)
Yishui's tree count comes to 27,289 trees across 11.74 km² of land, 31 points below the 40% tree-cover level considered healthy for this area, so roughly 90,081 more trees would close the gap.
Air quality detail
Air quality in Yishui today: AQI 156, Unhealthy
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 · Surabaya Development Zone, Yishui County (沂水县沂水开发区), 4.3 km away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
63.2
PM10
101.5
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Environmental Protection Department of Shandong Province (山东省环境保护厅)
- 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 Yishui's daily AQI at 86 on average, from 50 on Nov 8 to an hourly peak of 141 on Nov 5.
Where Yishui stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yishui: Critically low
9.3% tree cover against a 40% healthy-neighborhood target, across 11.74 km² of land.
Trees in this area
27,289
Target trees
117,370
More trees needed
90,081
CO₂ if planted / yr
1,982 t
Deforestation · 2001–2025
How much forest has Yishui lost?
There was very little forest around Yishui in 2000, about 6 hectares, and about 1 hectare 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 August 2017 of a 5 × 5 km area in the city center.
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 | under 1 ha | under 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 | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 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 Yishui?
- Towns and roadscleared for good100% · 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
- 674 ha
- Forest in 2020
- 1,770 ha
- Overall change
- +1,100 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yishui grew from about 674 hectares to 1,770 hectares, a net gain of about 1,100 hectares (+163%). New forest grew on about 1,100 hectares, while 2 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 Yishui
What is the air quality (AQI) in Yishui right now?
The latest reading for Yishui shows an AQI of 156 (Unhealthy), measured Nov 11, 23:00 local time by the Surabaya Development Zone, Yishui County (沂水县沂水开发区) ground monitoring station, 4.3 km away, via OpenAQ. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Yishui today?
At AQI 156 (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 Yishui been like this week?
Over the last 7 days, the CAMS air-quality model put Yishui's daily AQI at 86 on average, from 50 on Nov 8 to an hourly peak of 141 on Nov 5. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Yishui lost since 2001?
There was very little forest around Yishui in 2000, about 6 hectares, and about 1 hectare 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 Yishui grew from about 674 hectares to 1,770 hectares, a net gain of about 1,100 hectares (+163%). New forest grew on about 1,100 hectares, while 2 hectares were lost.
What is the tree count in Yishui?
Yishui has an estimated 27,289 trees across the 11.74 km² of land measured — 9.3% tree cover, 31 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Yishui need?
Yishui needs roughly 90,081 more trees to close a 31-point shortfall against its 40% tree-cover target — about 1,982 t of extra CO₂ absorbed per year once grown.
How are Yishui's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Yishui County, 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 Yishui County; the tree count is an estimate derived from that cover.
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