City report · Osun State, Nigeria
Iwo Air quality today
Air quality in Iwo currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 64
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 16.2
- tree cover
- 12.8%
- trees in this area
- 40.1K
- more trees needed
- 53.9K
Measured across a 2 km radius around Iwo 232102, 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.
Iwo · AQI 64 (Moderate)
Iwo's tree count comes to 40,092 trees across 12.53 km² of land, 17 points below the 30% tree-cover level considered healthy for this area, so roughly 53,873 more trees would close the gap.
Air quality detail
Air quality in Iwo today: AQI 64, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 145 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 145 km, e.g. Ibadan and Ijede
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
16.2
PM10
24.4
NO₂
3.4
O₃
103.0
SO₂
0.8
CO
323.0
- 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 Iwo's daily AQI at 87 on average, from 76 on Nov 10 to an hourly peak of 159 on Nov 6.
Where Iwo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Iwo: Critically low
12.8% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
40,092
Target trees
93,965
More trees needed
53,873
CO₂ if planted / yr
1,185 t
Deforestation · 2001–2025
How much forest has Iwo lost?
Since 2001, the area within 10 km of Iwo has lost about 2,210 hectares of forest (about 3,100 football pitches): 21% of the forest it had in 2000. Most of it (100%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 2,210 haabout 3,100 football pitches
- Share of its forest
- 21%of what there was in 2000
- Cleared for good
- 2,210 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 85 hectares a year in 2021–2025, down from 269 hectares a year in 2016–2020. The worst year was 2020, when about 408 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 | 28 ha | under 1 ha | 28 ha |
| 2002 | 3 ha | under 1 ha | 3 ha |
| 2003 | 1 ha | under 1 ha | 1 ha |
| 2004 | 6 ha | under 1 ha | 6 ha |
| 2005 | 11 ha | under 1 ha | 11 ha |
| 2006 | 40 ha | under 1 ha | 40 ha |
| 2007 | 44 ha | under 1 ha | 44 ha |
| 2008 | 58 ha | under 1 ha | 58 ha |
| 2009 | 4 ha | under 1 ha | 4 ha |
| 2010 | 27 ha | under 1 ha | 27 ha |
| 2011 | 35 ha | under 1 ha | 35 ha |
| 2012 | 75 ha | under 1 ha | 75 ha |
| 2013 | 29 ha | under 1 ha | 29 ha |
| 2014 | 29 ha | under 1 ha | 29 ha |
| 2015 | 54 ha | under 1 ha | 54 ha |
| 2016 | 153 ha | under 1 ha | 153 ha |
| 2017 | 384 ha | under 1 ha | 384 ha |
| 2018 | 201 ha | under 1 ha | 201 ha |
| 2019 | 200 ha | under 1 ha | 200 ha |
| 2020 | 408 ha | under 1 ha | 408 ha |
| 2021 | 107 ha | under 1 ha | 107 ha |
| 2022 | 35 ha | under 1 ha | 35 ha |
| 2023 | 121 ha | under 1 ha | 121 ha |
| 2024 | 90 ha | under 1 ha | 90 ha |
| 2025 | 72 ha | under 1 ha | 72 ha |
What is causing deforestation around Iwo?
- Farms, pasture and plantationscleared for good91% · 2,020 ha
- Towns and roadscleared for good8.7% · 193 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
- 14,500 ha
- Forest in 2020
- 12,500 ha
- Overall change
- −2,020 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Iwo shrank from about 14,500 hectares to 12,500 hectares, a net loss of about 2,020 hectares (−14%). New forest grew on about 289 hectares, but 2,310 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 Iwo
What is the air quality (AQI) in Iwo right now?
The latest reading for Iwo shows an AQI of 64 (Moderate), observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 145 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 Iwo today?
At AQI 64 (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 Iwo been like this week?
Over the last 7 days, the CAMS air-quality model put Iwo's daily AQI at 87 on average, from 76 on Nov 10 to an hourly peak of 159 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 Iwo lost since 2001?
Since 2001, the area within 10 km of Iwo has lost about 2,210 hectares of forest (about 3,100 football pitches): 21% of the forest it had in 2000. Most of it (100%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 85 hectares a year in 2021–2025, down from 269 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Iwo shrank from about 14,500 hectares to 12,500 hectares, a net loss of about 2,020 hectares (−14%). New forest grew on about 289 hectares, but 2,310 hectares were lost.
What is the tree count in Iwo?
Iwo has an estimated 40,092 trees across the 12.53 km² of land measured — 12.8% tree cover, 17 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Iwo need?
Iwo needs roughly 53,873 more trees to close a 17-point shortfall against its 30% tree-cover target — about 1,185 t of extra CO₂ absorbed per year once grown.
How are Iwo'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 Iwo 232102; the tree count is an estimate derived from that cover.
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