City report · Shandong, China
Linqu Air quality today
Air quality in Linqu currently reads AQI 117 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 117
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 42.0
- tree cover
- 12.6%
- trees in this area
- 37.6K
- more trees needed
- 66.9K
Measured across a 2 km radius around Linqu County, Weifang, 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.
Linqu · AQI 117 (Unhealthy for sensitive groups)
Linqu's tree count comes to 37,605 trees across 11.94 km² of land, 22 points below the 35% tree-cover level considered healthy for this area, so roughly 66,853 more trees would close the gap.
Air quality detail
Air quality in Linqu today: AQI 117, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Linyi Waterworks, Linyi County (临朐县临朐自来水厂), 2.5 km away
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
42.0
PM10
63.1
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
- 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 Linqu's daily AQI at 90 on average, from 49 on Nov 8 to an hourly peak of 155 on Nov 7.
Where Linqu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Linqu: Critically low
12.6% tree cover against a 35% healthy-neighborhood target, across 11.94 km² of land.
Trees in this area
37,605
Target trees
104,458
More trees needed
66,853
CO₂ if planted / yr
1,471 t
Deforestation · 2001–2025
How much forest has Linqu lost?
There was almost no forest around Linqu in 2000, so there has been almost nothing to lose 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 June 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 1,350 ha
- Forest in 2020
- 2,510 ha
- Overall change
- +1,150 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Linqu grew from about 1,350 hectares to 2,510 hectares, a net gain of about 1,150 hectares (+85%). New forest grew on about 1,160 hectares, while 1 hectare 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 Linqu
What is the air quality (AQI) in Linqu right now?
The latest reading for Linqu shows an AQI of 117 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by the Linyi Waterworks, Linyi County (临朐县临朐自来水厂) ground monitoring station, 2.5 km away, via OpenAQ. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Linqu today?
At AQI 117 (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 Linqu been like this week?
Over the last 7 days, the CAMS air-quality model put Linqu's daily AQI at 90 on average, from 49 on Nov 8 to an hourly peak of 155 on Nov 7. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Linqu lost since 2001?
There was almost no forest around Linqu in 2000, so there has been almost nothing to lose 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 Linqu grew from about 1,350 hectares to 2,510 hectares, a net gain of about 1,150 hectares (+85%). New forest grew on about 1,160 hectares, while 1 hectare were lost.
What is the tree count in Linqu?
Linqu has an estimated 37,605 trees across the 11.94 km² of land measured — 12.6% tree cover, 22 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Linqu need?
Linqu needs roughly 66,853 more trees to close a 22-point shortfall against its 35% tree-cover target — about 1,471 t of extra CO₂ absorbed per year once grown.
How are Linqu's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Linqu 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 Linqu County; the tree count is an estimate derived from that cover.
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