City report · Can Tho City, Vietnam
Ngã Bảy Air quality today
Air quality in Ngã Bảy currently reads AQI 59 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 59
Moderate
- PM2.5, fine particles (µg/m³)
- 14.4
- tree cover
- 66.2%
- trees in this area
- 207K
- more trees needed
- 0
Measured across a 2 km radius around Nga Bay, Can Tho, Hau Giang, Vietnam (12.57 km²), from a satellite image of Jun 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ngã Bảy · AQI 59 (Moderate)
Ngã Bảy's tree count comes to 207,142 trees across 12.52 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ngã Bảy today: AQI 59, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 6 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 6 station cities within 165 km, e.g. Can Giuoc and Ho Chi Minh City
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.4
PM10
17.0
NO₂
13.7
O₃
69.0
SO₂
8.2
CO
210.0
- 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 Ngã Bảy's daily AQI at 67 on average, from 63 on Nov 4 to an hourly peak of 90 on Nov 5.
Where Ngã Bảy stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ngã Bảy: Healthy tree cover
66.2% tree cover against a 30% healthy-neighborhood target, across 12.52 km² of land.
Trees in this area
207,142
Target trees
207,142
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ngã Bảy lost?
Since 2001, the area within 10 km of Ngã Bảy has lost about 354 hectares of forest (about 500 football pitches): 5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 101 hectares (28%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from March 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 354 haabout 500 football pitches
- Share of its forest
- 5%of what there was in 2000
- Cleared for good
- 101 hadeforestation: turned into farms, mines or towns
The worst year was 2015, when about 37 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 | 9 ha | 7 ha | 16 ha |
| 2002 | 4 ha | 6 ha | 10 ha |
| 2003 | 1 ha | 1 ha | 2 ha |
| 2004 | 6 ha | 3 ha | 9 ha |
| 2005 | 4 ha | 5 ha | 9 ha |
| 2006 | 2 ha | 5 ha | 7 ha |
| 2007 | 2 ha | 2 ha | 5 ha |
| 2008 | 1 ha | under 1 ha | 2 ha |
| 2009 | 4 ha | 4 ha | 8 ha |
| 2010 | 12 ha | 6 ha | 18 ha |
| 2011 | 5 ha | 3 ha | 8 ha |
| 2012 | 15 ha | 16 ha | 31 ha |
| 2013 | under 1 ha | 7 ha | 8 ha |
| 2014 | under 1 ha | 34 ha | 35 ha |
| 2015 | 4 ha | 33 ha | 37 ha |
| 2016 | 3 ha | 29 ha | 32 ha |
| 2017 | 5 ha | 14 ha | 18 ha |
| 2018 | 1 ha | 16 ha | 17 ha |
| 2019 | under 1 ha | 15 ha | 16 ha |
| 2020 | 1 ha | 22 ha | 23 ha |
| 2021 | 2 ha | 8 ha | 10 ha |
| 2022 | 2 ha | 2 ha | 4 ha |
| 2023 | 7 ha | 3 ha | 10 ha |
| 2024 | 4 ha | 4 ha | 8 ha |
| 2025 | 4 ha | 8 ha | 12 ha |
What is causing deforestation around Ngã Bảy?
- Loggingcan grow back63% · 223 ha
- Farms, pasture and plantationscleared for good21% · 75 ha
- Towns and roadscleared for good7.1% · 25 ha
Also: 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
- 6,290 ha
- Forest in 2020
- 7,290 ha
- Overall change
- +998 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ngã Bảy grew from about 6,290 hectares to 7,290 hectares, a net gain of about 998 hectares (+16%). New forest grew on about 1,140 hectares, while 145 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 Ngã Bảy
What is the air quality (AQI) in Ngã Bảy right now?
The latest reading for Ngã Bảy shows an AQI of 59 (Moderate), observed Nov 10, 20:00 local time via Open-Meteo / CAMS, corrected with 6 ground-station cities within 165 km, 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 Ngã Bảy today?
At AQI 59 (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 Ngã Bảy been like this week?
Over the last 7 days, the CAMS air-quality model put Ngã Bảy's daily AQI at 67 on average, from 63 on Nov 4 to an hourly peak of 90 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Ngã Bảy lost since 2001?
Since 2001, the area within 10 km of Ngã Bảy has lost about 354 hectares of forest (about 500 football pitches): 5% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 101 hectares (28%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Ngã Bảy grew from about 6,290 hectares to 7,290 hectares, a net gain of about 998 hectares (+16%). New forest grew on about 1,140 hectares, while 145 hectares were lost.
What is the tree count in Ngã Bảy?
Ngã Bảy has an estimated 207,142 trees across the 12.52 km² of land measured — 66.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ngã Bảy need?
Ngã Bảy has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ngã Bảy'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 Nga Bay; the tree count is an estimate derived from that cover.
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