City report · Kwanza Sul, Angola
Sumbe Air quality today
Air quality in Sumbe currently reads AQI 40 (Good): Air quality is satisfactory for everyone.
AQI 40
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 7.7
- tree cover
- 7.8%
- trees in this area
- 20.2K
- more trees needed
- 57.4K
Measured across a 2 km radius around Sumbe, Angola (12.57 km²), from a satellite image of Nov 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sumbe · AQI 40 (Good)
Sumbe's tree count comes to 20,167 trees across 10.35 km² of land, 22 points below the 30% tree-cover level considered healthy for this area, so roughly 57,399 more trees would close the gap.
Air quality detail
Air quality in Sumbe today: AQI 40, Good
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
Air quality is satisfactory for everyone.
PM2.5
7.7
PM10
10.4
NO₂
1.0
O₃
48.0
SO₂
1.1
CO
105.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Sumbe's daily AQI at 42 on average, from 25 on Nov 7 to an hourly peak of 57 on Nov 5.
Where Sumbe stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sumbe: Critically low
7.8% tree cover against a 30% healthy-neighborhood target, across 10.35 km² of land.
Trees in this area
20,167
Target trees
77,566
More trees needed
57,399
CO₂ if planted / yr
1,263 t
Deforestation · 2001–2025
How much forest has Sumbe lost?
There was very little forest around Sumbe in 2000, about 81 hectares, and about 21 hectares 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 April 2017 of a 5 × 5 km area in the city center.
The worst year was 2011, when about 6 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 | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 5 ha | under 1 ha | 5 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 6 ha | under 1 ha | 6 ha |
| 2012 | 4 ha | under 1 ha | 4 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 | 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 | 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 Sumbe?
- Farms, pasture and plantationscleared for good90% · 19 ha
- Towns and roadscleared for good2.4% · under 1 ha
- Unknown causescause unknown5.8% · 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
- 230 ha
- Forest in 2020
- 206 ha
- Overall change
- −24 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sumbe shrank from about 230 hectares to 206 hectares, a net loss of about 24 hectares (−10%). New forest grew on about 10 hectares, but 33 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 Sumbe
What is the air quality (AQI) in Sumbe right now?
The latest reading for Sumbe shows an AQI of 40 (Good), observed Nov 10, 19:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Sumbe today?
At AQI 40 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Sumbe been like this week?
Over the last 7 days, the CAMS air-quality model put Sumbe's daily AQI at 42 on average, from 25 on Nov 7 to an hourly peak of 57 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 Sumbe lost since 2001?
There was very little forest around Sumbe in 2000, about 81 hectares, and about 21 hectares 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 Sumbe shrank from about 230 hectares to 206 hectares, a net loss of about 24 hectares (−10%). New forest grew on about 10 hectares, but 33 hectares were lost.
What is the tree count in Sumbe?
Sumbe has an estimated 20,167 trees across the 10.35 km² of land measured — 7.8% tree cover, 22 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Sumbe need?
Sumbe needs roughly 57,399 more trees to close a 22-point shortfall against its 30% tree-cover target — about 1,263 t of extra CO₂ absorbed per year once grown.
How are Sumbe'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 Sumbe; the tree count is an estimate derived from that cover.
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