City report · Kenya
Garissa Air quality today
Air quality in Garissa currently reads AQI 21 (Good): Air quality is satisfactory for everyone.
AQI 21
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.3
- tree cover
- 17.3%
- trees in this area
- 54.4K
- more trees needed
- 39.9K
Measured across a 2 km radius around Garissa, Kenya (12.57 km²), from a satellite image of Jul 30, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Garissa · AQI 21 (Good)
Garissa's tree count comes to 54,350 trees across 12.57 km², 13 points below the 30% tree-cover level considered healthy for this area, so roughly 39,898 more trees would close the gap.
Air quality detail
Air quality in Garissa today: AQI 21, Good
Main pollutant: PM2.5 · Observed Nov 11, 01:00 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
3.3
PM10
4.3
NO₂
2.0
O₃
28.0
SO₂
0.3
CO
119.0
- 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 Garissa's daily AQI at 32 on average, from 23 on Nov 11 to an hourly peak of 54 on Nov 5.
Where Garissa stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Garissa: Critically low
17.3% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
54,350
Target trees
94,248
More trees needed
39,898
CO₂ if planted / yr
877.8 t
Deforestation · 2001–2025
How much forest has Garissa lost?
There was almost no forest around Garissa in 2000, so there has been almost nothing to lose 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 October 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 471 ha
- Forest in 2020
- 644 ha
- Overall change
- +173 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Garissa grew from about 471 hectares to 644 hectares, a net gain of about 173 hectares (+37%). New forest grew on about 258 hectares, while 85 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 Garissa
What is the air quality (AQI) in Garissa right now?
The latest reading for Garissa shows an AQI of 21 (Good), observed Nov 11, 01:00 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 Garissa today?
At AQI 21 (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 Garissa been like this week?
Over the last 7 days, the CAMS air-quality model put Garissa's daily AQI at 32 on average, from 23 on Nov 11 to an hourly peak of 54 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 Garissa lost since 2001?
There was almost no forest around Garissa in 2000, so there has been almost nothing to lose 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 Garissa grew from about 471 hectares to 644 hectares, a net gain of about 173 hectares (+37%). New forest grew on about 258 hectares, while 85 hectares were lost.
What is the tree count in Garissa?
Garissa has an estimated 54,350 trees across the 12.57 km² measured — 17.3% tree cover, 13 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Garissa need?
Garissa needs roughly 39,898 more trees to close a 13-point shortfall against its 30% tree-cover target — about 877.8 t of extra CO₂ absorbed per year once grown.
How are Garissa'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 Garissa; the tree count is an estimate derived from that cover.
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