City report · Mwanza, Tanzania
Sengerema Air quality today
Air quality in Sengerema currently reads AQI 17 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 17
Good
- PM2.5, fine particles (µg/m³)
- 2.7
- tree cover
- 10.6%
- trees in this area
- 33.3K
- more trees needed
- 60.9K
Measured across a 2 km radius around Sengerema, Mwanza, Tanzania, the United Republic of (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Sengerema · AQI 17 (Good)
Sengerema's tree count comes to 33,301 trees across 12.57 km², 19 points below the 30% tree-cover level considered healthy for this area, so roughly 60,947 more trees would close the gap.
Air quality detail
Air quality in Sengerema today: AQI 17, Good
Main pollutant: PM2.5 · Observed Nov 11, 10:00 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
2.7
PM10
3.1
NO₂
0.7
O₃
71.0
SO₂
0.3
CO
159.0
- 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 Sengerema's daily AQI at 37 on average, from 24 on Nov 10 to an hourly peak of 62 on Nov 7.
Where Sengerema stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Sengerema: Critically low
10.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
33,301
Target trees
94,248
More trees needed
60,947
CO₂ if planted / yr
1,341 t
Deforestation · 2001–2025
How much forest has Sengerema lost?
There was very little forest around Sengerema in 2000, about 64 hectares, and about 5 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 August 2017 of a 5 × 5 km area in the city center.
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 | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 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 | under 1 ha | under 1 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 | under 1 ha | under 1 ha | under 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 Sengerema?
- Farms, pasture and plantationscleared for good85% · 4 ha
- Unknown causescause unknown12% · under 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
- 410 ha
- Forest in 2020
- 606 ha
- Overall change
- +196 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Sengerema grew from about 410 hectares to 606 hectares, a net gain of about 196 hectares (+48%). New forest grew on about 205 hectares, while 9 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 Sengerema
What is the air quality (AQI) in Sengerema right now?
The latest reading for Sengerema shows an AQI of 17 (Good), observed Nov 11, 10:00 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 Sengerema today?
At AQI 17 (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 Sengerema been like this week?
Over the last 7 days, the CAMS air-quality model put Sengerema's daily AQI at 37 on average, from 24 on Nov 10 to an hourly peak of 62 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Sengerema lost since 2001?
There was very little forest around Sengerema in 2000, about 64 hectares, and about 5 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 Sengerema grew from about 410 hectares to 606 hectares, a net gain of about 196 hectares (+48%). New forest grew on about 205 hectares, while 9 hectares were lost.
What is the tree count in Sengerema?
Sengerema has an estimated 33,301 trees across the 12.57 km² measured — 10.6% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Sengerema need?
Sengerema needs roughly 60,947 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,341 t of extra CO₂ absorbed per year once grown.
How are Sengerema'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 Sengerema; the tree count is an estimate derived from that cover.
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