City report · Mombasa County, Kenya
Mombasa Air quality today
Air quality in Mombasa currently reads AQI 43 (Good): Air quality is satisfactory for everyone.
AQI 43
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 7.7
- tree cover
- 11.9%
- trees in this area
- 31.5K
- more trees needed
- 47.9K
Measured across a 2 km radius around Kinyozi, Mombasa, Kenya (12.57 km²), from a satellite image of Sep 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Mombasa · AQI 43 (Good)
Mombasa's tree count comes to 31,478 trees across 10.58 km² of land, 18 points below the 30% tree-cover level considered healthy for this area, so roughly 47,878 more trees would close the gap.
Air quality detail
Air quality in Mombasa today: AQI 43, Good
Main pollutant: PM2.5 · Observed Nov 10, 22:00 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
11.4
NO₂
4.2
O₃
25.0
SO₂
2.2
CO
115.0
- 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 Mombasa's daily AQI at 53 on average, from 47 on Nov 5 to an hourly peak of 61 on Nov 4.
Where Mombasa stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Mombasa: Critically low
11.9% tree cover against a 30% healthy-neighborhood target, across 10.58 km² of land.
Trees in this area
31,478
Target trees
79,356
More trees needed
47,878
CO₂ if planted / yr
1,053 t
Deforestation · 2001–2025
How much forest has Mombasa lost?
Since 2001, the area within 10 km of Mombasa has lost about 804 hectares of forest (about 1,100 football pitches): 28% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from November 2018 of a 5 × 5 km area about 5 km southwest of the city center.
- Forest lost since 2001
- 804 haabout 1,100 football pitches
- Share of its forest
- 28%of what there was in 2000
- Cleared for good
- 797 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 174 hectares of forest were lost.
Mombasa's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 44 ha | under 1 ha | 44 ha |
| 2002 | 25 ha | under 1 ha | 25 ha |
| 2003 | 124 ha | 1 ha | 125 ha |
| 2004 | 17 ha | under 1 ha | 18 ha |
| 2005 | 4 ha | under 1 ha | 4 ha |
| 2006 | 41 ha | under 1 ha | 42 ha |
| 2007 | 38 ha | under 1 ha | 39 ha |
| 2008 | 174 ha | under 1 ha | 174 ha |
| 2009 | 57 ha | under 1 ha | 58 ha |
| 2010 | 33 ha | under 1 ha | 34 ha |
| 2011 | 79 ha | under 1 ha | 79 ha |
| 2012 | 28 ha | under 1 ha | 28 ha |
| 2013 | 12 ha | under 1 ha | 12 ha |
| 2014 | 19 ha | under 1 ha | 19 ha |
| 2015 | 8 ha | under 1 ha | 8 ha |
| 2016 | 14 ha | under 1 ha | 14 ha |
| 2017 | 11 ha | under 1 ha | 11 ha |
| 2018 | 11 ha | under 1 ha | 11 ha |
| 2019 | 8 ha | under 1 ha | 8 ha |
| 2020 | 10 ha | under 1 ha | 10 ha |
| 2021 | 13 ha | under 1 ha | 13 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 6 ha | under 1 ha | 6 ha |
| 2024 | 3 ha | under 1 ha | 3 ha |
| 2025 | 19 ha | 1 ha | 20 ha |
What is causing deforestation around Mombasa?
- Towns and roadscleared for good86% · 690 ha
- Farms, pasture and plantationscleared for good12% · 97 ha
- Mining and energycleared for good1.2% · 10 ha
Also: storms, floods and other natural causes, 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
- 1,300 ha
- Forest in 2020
- 858 ha
- Overall change
- −440 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Mombasa shrank from about 1,300 hectares to 858 hectares, a net loss of about 440 hectares (−34%). New forest grew on about 45 hectares, but 485 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 Mombasa
Same 2 km radius, same index — so they compare directly.
- Matuga16.3 km
Kenya
- Tree cover
- 42%
- Air quality
- 53
- Malindi105.8 km
Kenya
- Tree cover
- 32%
- Air quality
- 37
- Tanga129.0 km
Tanzania
- Tree cover
- 26%
- Air quality
- 47
- Handeni238.3 km
Tanzania
- Tree cover
- 26%
- Air quality
- 43
- Zanzibar240.1 km
Tanzania
- Tree cover
- 20%
- Air quality
- 43
- Moshi270.2 km
Tanzania
- Tree cover
- 35%
- Air quality
- 64
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Frequently asked
Questions about Mombasa
What is the air quality (AQI) in Mombasa right now?
The latest reading for Mombasa shows an AQI of 43 (Good), observed Nov 10, 22:00 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 Mombasa today?
At AQI 43 (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 Mombasa been like this week?
Over the last 7 days, the CAMS air-quality model put Mombasa's daily AQI at 53 on average, from 47 on Nov 5 to an hourly peak of 61 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Mombasa lost since 2001?
Since 2001, the area within 10 km of Mombasa has lost about 804 hectares of forest (about 1,100 football pitches): 28% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Mombasa shrank from about 1,300 hectares to 858 hectares, a net loss of about 440 hectares (−34%). New forest grew on about 45 hectares, but 485 hectares were lost.
What is the tree count in Mombasa?
Mombasa has an estimated 31,478 trees across the 10.58 km² of land measured — 11.9% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Mombasa need?
Mombasa needs roughly 47,878 more trees to close a 18-point shortfall against its 30% tree-cover target — about 1,053 t of extra CO₂ absorbed per year once grown.
How are Mombasa'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 Kinyozi; the tree count is an estimate derived from that cover.
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