City report · Kigoma, Tanzania
Kasulu Air quality today
Air quality in Kasulu currently reads AQI 90 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 90
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 26.1
- tree cover
- 16.7%
- trees in this area
- 52.5K
- more trees needed
- 41.8K
Measured across a 2 km radius around Kasulu, Tanzania (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Kasulu · AQI 90 (Moderate)
Kasulu's tree count comes to 52,465 trees across 12.57 km², 13 points below the 30% tree-cover level considered healthy for this area, so roughly 41,783 more trees would close the gap.
Air quality detail
Air quality in Kasulu today: AQI 90, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 06:00 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
26.6
NO₂
6.0
O₃
29.0
SO₂
0.6
CO
230.0
- 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 Kasulu's daily AQI at 75 on average, from 61 on Nov 7 to an hourly peak of 114 on Nov 6.
Where Kasulu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Kasulu: Critically low
16.7% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
52,465
Target trees
94,248
More trees needed
41,783
CO₂ if planted / yr
919.2 t
Deforestation · 2001–2025
How much forest has Kasulu lost?
Since 2001, the area within 10 km of Kasulu has lost about 207 hectares of forest (about 290 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 66 hectares (32%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 207 haabout 290 football pitches
- Share of its forest
- 14%of what there was in 2000
- Cleared for good
- 66 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 24 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 | 1 ha | under 1 ha | 2 ha |
| 2002 | 4 ha | 11 ha | 15 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 1 ha | 12 ha | 13 ha |
| 2005 | 2 ha | 2 ha | 4 ha |
| 2006 | 2 ha | 5 ha | 7 ha |
| 2007 | 2 ha | 5 ha | 7 ha |
| 2008 | 3 ha | 8 ha | 11 ha |
| 2009 | under 1 ha | 3 ha | 3 ha |
| 2010 | under 1 ha | 2 ha | 2 ha |
| 2011 | under 1 ha | 10 ha | 10 ha |
| 2012 | under 1 ha | under 1 ha | 1 ha |
| 2013 | 1 ha | under 1 ha | 2 ha |
| 2014 | under 1 ha | under 1 ha | 1 ha |
| 2015 | 2 ha | 2 ha | 4 ha |
| 2016 | 4 ha | under 1 ha | 4 ha |
| 2017 | 1 ha | 5 ha | 7 ha |
| 2018 | 6 ha | 2 ha | 8 ha |
| 2019 | 9 ha | 7 ha | 15 ha |
| 2020 | 4 ha | 11 ha | 15 ha |
| 2021 | 3 ha | 6 ha | 9 ha |
| 2022 | 5 ha | 3 ha | 8 ha |
| 2023 | 6 ha | 11 ha | 17 ha |
| 2024 | 3 ha | 14 ha | 18 ha |
| 2025 | 5 ha | 19 ha | 24 ha |
What is causing deforestation around Kasulu?
- Loggingcan grow back66% · 136 ha
- Farms, pasture and plantationscleared for good28% · 58 ha
- Towns and roadscleared for good3.7% · 8 ha
Also: 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
- 3,720 ha
- Forest in 2020
- 4,430 ha
- Overall change
- +702 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Kasulu grew from about 3,720 hectares to 4,430 hectares, a net gain of about 702 hectares (+19%). New forest grew on about 927 hectares, while 225 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 Kasulu
Same 2 km radius, same index — so they compare directly.
- Kigoma62.4 km
Tanzania
- Tree cover
- 18%
- Air quality
- 56
- Rumonge99.6 km
Burundi
- Tree cover
- 29%
- Air quality
- 44
- Gitega129.3 km
Burundi
- Tree cover
- 14%
- Air quality
- 52
- Bujumbura156.2 km
Burundi
- Tree cover
- 15%
- Air quality
- 73
- Uvira169.4 km
Democratic Republic of the Congo
- Tree cover
- 10%
- Air quality
- 52
- Kalemie182.6 km
Democratic Republic of the Congo
- Tree cover
- 12%
- Air quality
- 53
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Frequently asked
Questions about Kasulu
What is the air quality (AQI) in Kasulu right now?
The latest reading for Kasulu shows an AQI of 90 (Moderate), observed Nov 11, 06:00 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 Kasulu today?
At AQI 90 (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 Kasulu been like this week?
Over the last 7 days, the CAMS air-quality model put Kasulu's daily AQI at 75 on average, from 61 on Nov 7 to an hourly peak of 114 on Nov 6. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Kasulu lost since 2001?
Since 2001, the area within 10 km of Kasulu has lost about 207 hectares of forest (about 290 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 66 hectares (32%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Kasulu grew from about 3,720 hectares to 4,430 hectares, a net gain of about 702 hectares (+19%). New forest grew on about 927 hectares, while 225 hectares were lost.
What is the tree count in Kasulu?
Kasulu has an estimated 52,465 trees across the 12.57 km² measured — 16.7% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Kasulu need?
Kasulu needs roughly 41,783 more trees to close a 13-point shortfall against its 30% tree-cover target — about 919.2 t of extra CO₂ absorbed per year once grown.
How are Kasulu'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 Kasulu; the tree count is an estimate derived from that cover.
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