City report · Osun State, Nigeria
Osogbo Air quality today
Air quality in Osogbo currently reads AQI 65 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 65
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 17.2
- tree cover
- 14.5%
- trees in this area
- 45.6K
- more trees needed
- 48.7K
Measured across a 2 km radius around Osogbo, Osun, Nigeria (12.57 km²), from a satellite image of Jan 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Osogbo · AQI 65 (Moderate)
Osogbo's tree count comes to 45,553 trees across 12.57 km², 16 points below the 30% tree-cover level considered healthy for this area, so roughly 48,695 more trees would close the gap.
Air quality detail
Air quality in Osogbo today: AQI 65, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 185 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 185 km, e.g. Ibadan and Ijede
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
17.2
PM10
26.8
NO₂
2.3
O₃
105.0
SO₂
0.8
CO
342.0
- 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 Osogbo's daily AQI at 82 on average, from 72 on Nov 10 to an hourly peak of 152 on Nov 6.
Where Osogbo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Osogbo: Critically low
14.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
45,553
Target trees
94,248
More trees needed
48,695
CO₂ if planted / yr
1,071 t
Deforestation · 2001–2025
How much forest has Osogbo lost?
Since 2001, the area within 10 km of Osogbo has lost about 2,490 hectares of forest (about 3,500 football pitches): 19% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 2,490 haabout 3,500 football pitches
- Share of its forest
- 19%of what there was in 2000
- Cleared for good
- 2,490 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 112 hectares a year in 2021–2025, against 140 hectares a year in 2016–2020. The worst year was 2017, when about 343 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 | 10 ha | under 1 ha | 10 ha |
| 2002 | 40 ha | under 1 ha | 40 ha |
| 2003 | 4 ha | under 1 ha | 4 ha |
| 2004 | 3 ha | under 1 ha | 3 ha |
| 2005 | 34 ha | under 1 ha | 34 ha |
| 2006 | 18 ha | under 1 ha | 18 ha |
| 2007 | 38 ha | under 1 ha | 38 ha |
| 2008 | 133 ha | under 1 ha | 133 ha |
| 2009 | 104 ha | under 1 ha | 104 ha |
| 2010 | 158 ha | under 1 ha | 158 ha |
| 2011 | 104 ha | under 1 ha | 104 ha |
| 2012 | 91 ha | under 1 ha | 91 ha |
| 2013 | 259 ha | 1 ha | 260 ha |
| 2014 | 147 ha | under 1 ha | 147 ha |
| 2015 | 89 ha | under 1 ha | 89 ha |
| 2016 | 51 ha | under 1 ha | 51 ha |
| 2017 | 343 ha | under 1 ha | 343 ha |
| 2018 | 119 ha | under 1 ha | 119 ha |
| 2019 | 77 ha | under 1 ha | 77 ha |
| 2020 | 111 ha | under 1 ha | 111 ha |
| 2021 | 109 ha | under 1 ha | 109 ha |
| 2022 | 74 ha | under 1 ha | 74 ha |
| 2023 | 95 ha | under 1 ha | 95 ha |
| 2024 | 207 ha | under 1 ha | 207 ha |
| 2025 | 77 ha | under 1 ha | 78 ha |
What is causing deforestation around Osogbo?
- Towns and roadscleared for good62% · 1,540 ha
- Farms, pasture and plantationscleared for good38% · 952 ha
Also: 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
- 10,200 ha
- Forest in 2020
- 7,440 ha
- Overall change
- −2,730 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Osogbo shrank from about 10,200 hectares to 7,440 hectares, a net loss of about 2,730 hectares (−27%). New forest grew on about 306 hectares, but 3,040 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 Osogbo
What is the air quality (AQI) in Osogbo right now?
The latest reading for Osogbo shows an AQI of 65 (Moderate), observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 185 km, 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 Osogbo today?
At AQI 65 (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 Osogbo been like this week?
Over the last 7 days, the CAMS air-quality model put Osogbo's daily AQI at 82 on average, from 72 on Nov 10 to an hourly peak of 152 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Osogbo lost since 2001?
Since 2001, the area within 10 km of Osogbo has lost about 2,490 hectares of forest (about 3,500 football pitches): 19% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss has stayed about the same: about 112 hectares a year in 2021–2025, against 140 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Osogbo shrank from about 10,200 hectares to 7,440 hectares, a net loss of about 2,730 hectares (−27%). New forest grew on about 306 hectares, but 3,040 hectares were lost.
What is the tree count in Osogbo?
Osogbo has an estimated 45,553 trees across the 12.57 km² measured — 14.5% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Osogbo need?
Osogbo needs roughly 48,695 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,071 t of extra CO₂ absorbed per year once grown.
How are Osogbo'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 Osogbo; the tree count is an estimate derived from that cover.
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