City report · Da Nang City, Vietnam
Hải Châu Air quality today
Air quality in Hải Châu currently reads AQI 84 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 84
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 26.1
- tree cover
- 12.5%
- trees in this area
- 30.7K
- more trees needed
- 43.0K
Measured across a 2 km radius around Hai Chau, Da Nang 550000, Vietnam (12.57 km²), from a satellite image of Oct 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hải Châu · AQI 84 (Moderate)
Hải Châu's tree count comes to 30,748 trees across 9.84 km² of land, 18 points below the 30% tree-cover level considered healthy for this area, so roughly 43,048 more trees would close the gap.
Air quality detail
Air quality in Hải Châu today: AQI 84, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 19:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
26.1
PM10
33.8
NO₂
2.4
O₃
116.0
SO₂
2.8
CO
314.0
- 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 Hải Châu's daily AQI at 53 on average, from 42 on Nov 4 to an hourly peak of 86 on Nov 10.
Where Hải Châu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hải Châu: Critically low
12.5% tree cover against a 30% healthy-neighborhood target, across 9.84 km² of land.
Trees in this area
30,748
Target trees
73,796
More trees needed
43,048
CO₂ if planted / yr
947.1 t
Deforestation · 2001–2025
How much forest has Hải Châu lost?
Since 2001, the area within 10 km of Hải Châu has lost about 517 hectares of forest (about 720 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 119 hectares (23%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from May 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 517 haabout 720 football pitches
- Share of its forest
- 15%of what there was in 2000
- Cleared for good
- 119 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 63 hectares of forest were lost.
Hải Châu's full deforestation reportHectares 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 | 1 ha | 2 ha |
| 2003 | 2 ha | 3 ha | 4 ha |
| 2004 | 6 ha | 3 ha | 9 ha |
| 2005 | 11 ha | 32 ha | 43 ha |
| 2006 | 11 ha | 44 ha | 55 ha |
| 2007 | 4 ha | 3 ha | 7 ha |
| 2008 | under 1 ha | 1 ha | 2 ha |
| 2009 | 9 ha | 5 ha | 14 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 7 ha | 8 ha | 15 ha |
| 2012 | 16 ha | 48 ha | 63 ha |
| 2013 | 3 ha | 16 ha | 20 ha |
| 2014 | 6 ha | 32 ha | 38 ha |
| 2015 | 4 ha | 7 ha | 11 ha |
| 2016 | 6 ha | 23 ha | 29 ha |
| 2017 | 16 ha | 8 ha | 24 ha |
| 2018 | 2 ha | 20 ha | 22 ha |
| 2019 | 4 ha | 24 ha | 27 ha |
| 2020 | 3 ha | 28 ha | 31 ha |
| 2021 | 1 ha | 12 ha | 13 ha |
| 2022 | 2 ha | 24 ha | 26 ha |
| 2023 | under 1 ha | 19 ha | 20 ha |
| 2024 | 4 ha | 13 ha | 17 ha |
| 2025 | 3 ha | 26 ha | 28 ha |
What is causing deforestation around Hải Châu?
- Loggingcan grow back74% · 383 ha
- Towns and roadscleared for good14% · 74 ha
- Farms, pasture and plantationscleared for good8.6% · 45 ha
Also: storms, floods and other natural causes, shifting farming, 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
- 4,830 ha
- Forest in 2020
- 4,440 ha
- Overall change
- −394 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hải Châu shrank from about 4,830 hectares to 4,440 hectares, a net loss of about 394 hectares (−8.2%). New forest grew on about 159 hectares, but 553 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
In the same region
Measured cities near Hải Châu
Same 2 km radius, same index — so they compare directly.
- Điện Bàn19.6 km
Vietnam
- Tree cover
- 33%
- Air quality
- 70
- Tam Kỳ60.6 km
Vietnam
- Tree cover
- 36%
- Air quality
- 56
- Huế80.4 km
Vietnam
- Tree cover
- 21%
- Air quality
- 28
- Phong Điền108.4 km
Vietnam
- Tree cover
- 54%
- Air quality
- 23
- Quảng Ngãi121.1 km
Vietnam
- Tree cover
- 27%
- Air quality
- 68
- Ðông Hà146.2 km
Vietnam
- Tree cover
- 31%
- Air quality
- 21
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Frequently asked
Questions about Hải Châu
What is the air quality (AQI) in Hải Châu right now?
The latest reading for Hải Châu shows an AQI of 84 (Moderate), observed Nov 10, 19:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Hải Châu today?
At AQI 84 (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 Hải Châu been like this week?
Over the last 7 days, the CAMS air-quality model put Hải Châu's daily AQI at 53 on average, from 42 on Nov 4 to an hourly peak of 86 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Hải Châu lost since 2001?
Since 2001, the area within 10 km of Hải Châu has lost about 517 hectares of forest (about 720 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 119 hectares (23%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Hải Châu shrank from about 4,830 hectares to 4,440 hectares, a net loss of about 394 hectares (−8.2%). New forest grew on about 159 hectares, but 553 hectares were lost.
What is the tree count in Hải Châu?
Hải Châu has an estimated 30,748 trees across the 9.84 km² of land measured — 12.5% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Hải Châu need?
Hải Châu needs roughly 43,048 more trees to close a 18-point shortfall against its 30% tree-cover target — about 947.1 t of extra CO₂ absorbed per year once grown.
How are Hải Châu'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 Hai Chau; the tree count is an estimate derived from that cover.
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