City report · Hubei, China
Daye Air quality today
Air quality in Daye currently reads AQI 117 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 117
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 42.0
- tree cover
- 23.7%
- trees in this area
- 69.8K
- more trees needed
- 33.3K
Measured across a 2 km radius around Daye, Huangshi, Hubei, China (12.57 km²), from a satellite image of Aug 28, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Daye · AQI 117 (Unhealthy for sensitive groups)
Daye's tree count comes to 69,765 trees across 11.78 km² of land, 11 points below the 35% tree-cover level considered healthy for this area, so roughly 33,263 more trees would close the gap.
Air quality detail
Air quality in Daye 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 · Tie montian, Huangshi, Hubei (黄石铁山), 14.5 km away · median of 3 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
42.0
PM10
61.1
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Hubei Environmental Protection Agency (湖北省环境保护厅)
- 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 Daye's daily AQI at 111 on average, from 74 on Nov 9 to an hourly peak of 186 on Nov 6.
Where Daye stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Daye: Below target
23.7% tree cover against a 35% healthy-neighborhood target, across 11.78 km² of land.
Trees in this area
69,765
Target trees
103,028
More trees needed
33,263
CO₂ if planted / yr
731.8 t
Deforestation · 2001–2025
How much forest has Daye lost?
Since 2001, the area within 10 km of Daye has lost about 24 hectares of forest (about 33 football pitches): 1.1% of the forest it had in 2000. Most of it (55%) was deforestation, forest cleared for good, mainly for mining and energy.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 24 haabout 33 football pitches
- Share of its forest
- 1.1%of what there was in 2000
- Cleared for good
- 13 hadeforestation: turned into farms, mines or towns
The worst year was 2024, when about 4 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 | 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 | 1 ha | 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 | 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 | 2 ha | 3 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 2 ha | under 1 ha | 2 ha |
| 2016 | 1 ha | 1 ha | 2 ha |
| 2017 | 1 ha | under 1 ha | 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 | 1 ha |
| 2022 | under 1 ha | under 1 ha | 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 3 ha | 2 ha | 4 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Daye?
- Loggingcan grow back39% · 9 ha
- Mining and energycleared for good22% · 5 ha
- Towns and roadscleared for good22% · 5 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
- 5,090 ha
- Forest in 2020
- 5,210 ha
- Overall change
- +120 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Daye grew from about 5,090 hectares to 5,210 hectares, a net gain of about 120 hectares (+2.4%). New forest grew on about 187 hectares, while 67 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 Daye
What is the air quality (AQI) in Daye right now?
The latest reading for Daye shows an AQI of 117 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Tie montian, Huangshi, Hubei (黄石铁山), 14.5 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Daye 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 Daye been like this week?
Over the last 7 days, the CAMS air-quality model put Daye's daily AQI at 111 on average, from 74 on Nov 9 to an hourly peak of 186 on Nov 6. On 4 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Daye lost since 2001?
Since 2001, the area within 10 km of Daye has lost about 24 hectares of forest (about 33 football pitches): 1.1% of the forest it had in 2000. Most of it (55%) was deforestation, forest cleared for good, mainly for mining and energy. Comparing satellite maps from 2000 and 2020, the forest around Daye grew from about 5,090 hectares to 5,210 hectares, a net gain of about 120 hectares (+2.4%). New forest grew on about 187 hectares, while 67 hectares were lost.
What is the tree count in Daye?
Daye has an estimated 69,765 trees across the 11.78 km² of land measured — 23.7% tree cover, 11 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Daye need?
Daye needs roughly 33,263 more trees to close a 11-point shortfall against its 35% tree-cover target — about 731.8 t of extra CO₂ absorbed per year once grown.
How are Daye's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Daye, 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 Daye; the tree count is an estimate derived from that cover.
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