City report · Ogun State, Nigeria
Shagamu Air quality today
Air quality in Shagamu currently reads AQI 78 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 78
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 26.5
- tree cover
- 19.5%
- trees in this area
- 61.3K
- more trees needed
- 33.0K
Measured across a 2 km radius around Sagamu 121102, Ogun State, Nigeria (12.57 km²), from a satellite image of Jan 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Shagamu · AQI 78 (Moderate)
Shagamu's tree count comes to 61,261 trees across 12.57 km², 10 points below the 30% tree-cover level considered healthy for this area, so roughly 32,987 more trees would close the gap.
Air quality detail
Air quality in Shagamu today: AQI 78, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 45 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 45 km, e.g. Ijede and Lagos
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
26.5
PM10
26.8
NO₂
5.3
O₃
104.0
SO₂
1.1
CO
290.0
- 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 Shagamu's daily AQI at 80 on average, from 72 on Nov 10 to an hourly peak of 119 on Nov 9.
Where Shagamu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Shagamu: Below target
19.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
61,261
Target trees
94,248
More trees needed
32,987
CO₂ if planted / yr
725.7 t
Deforestation · 2001–2025
How much forest has Shagamu lost?
Since 2001, the area within 10 km of Shagamu has lost about 5,030 hectares of forest (about 7,000 football pitches): 40% of the forest it had in 2000. Most of it (over 99%) 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 northwest of the city center.
- Forest lost since 2001
- 5,030 haabout 7,000 football pitches
- Share of its forest
- 40%of what there was in 2000
- Cleared for good
- 5,030 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 485 hectares a year in 2021–2025, up from 360 hectares a year in 2016–2020. The worst year was 2025, when about 778 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 | 38 ha | under 1 ha | 38 ha |
| 2002 | 12 ha | under 1 ha | 12 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 15 ha | under 1 ha | 15 ha |
| 2005 | 27 ha | under 1 ha | 27 ha |
| 2006 | 31 ha | under 1 ha | 31 ha |
| 2007 | 129 ha | under 1 ha | 129 ha |
| 2008 | 101 ha | under 1 ha | 101 ha |
| 2009 | 65 ha | under 1 ha | 65 ha |
| 2010 | 69 ha | under 1 ha | 69 ha |
| 2011 | 53 ha | under 1 ha | 53 ha |
| 2012 | 102 ha | under 1 ha | 102 ha |
| 2013 | 74 ha | under 1 ha | 74 ha |
| 2014 | 44 ha | under 1 ha | 44 ha |
| 2015 | 43 ha | under 1 ha | 43 ha |
| 2016 | 80 ha | under 1 ha | 80 ha |
| 2017 | 546 ha | under 1 ha | 546 ha |
| 2018 | 443 ha | under 1 ha | 443 ha |
| 2019 | 338 ha | under 1 ha | 338 ha |
| 2020 | 391 ha | under 1 ha | 391 ha |
| 2021 | 519 ha | under 1 ha | 519 ha |
| 2022 | 374 ha | under 1 ha | 374 ha |
| 2023 | 277 ha | under 1 ha | 277 ha |
| 2024 | 479 ha | under 1 ha | 479 ha |
| 2025 | 778 ha | under 1 ha | 778 ha |
What is causing deforestation around Shagamu?
- Farms, pasture and plantationscleared for good74% · 3,730 ha
- Towns and roadscleared for good24% · 1,200 ha
- Mining and energycleared for good2% · 99 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
- 15,900 ha
- Forest in 2020
- 12,500 ha
- Overall change
- −3,400 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Shagamu shrank from about 15,900 hectares to 12,500 hectares, a net loss of about 3,400 hectares (−21%). New forest grew on about 818 hectares, but 4,220 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 Shagamu
Same 2 km radius, same index — so they compare directly.
- Ijebu Ode30.1 km
Nigeria
- Tree cover
- 7%
- Air quality
- 59
- Ebute Ikorodu32.6 km
Nigeria
- Tree cover
- 15%
- Air quality
- 82
- Ijebu-Igbo41.3 km
Nigeria
- Tree cover
- 27%
- Air quality
- 71
- Agege43.2 km
Nigeria
- Tree cover
- 1%
- Air quality
- 130
- Abeokuta47.7 km
Nigeria
- Tree cover
- 10%
- Air quality
- 71
- Mushin48.1 km
Nigeria
- Tree cover
- 1%
- Air quality
- 122
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Frequently asked
Questions about Shagamu
What is the air quality (AQI) in Shagamu right now?
The latest reading for Shagamu shows an AQI of 78 (Moderate), observed Nov 10, 16:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 45 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 Shagamu today?
At AQI 78 (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 Shagamu been like this week?
Over the last 7 days, the CAMS air-quality model put Shagamu's daily AQI at 80 on average, from 72 on Nov 10 to an hourly peak of 119 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Shagamu lost since 2001?
Since 2001, the area within 10 km of Shagamu has lost about 5,030 hectares of forest (about 7,000 football pitches): 40% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is speeding up: about 485 hectares a year in 2021–2025, up from 360 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Shagamu shrank from about 15,900 hectares to 12,500 hectares, a net loss of about 3,400 hectares (−21%). New forest grew on about 818 hectares, but 4,220 hectares were lost.
What is the tree count in Shagamu?
Shagamu has an estimated 61,261 trees across the 12.57 km² measured — 19.5% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Shagamu need?
Shagamu needs roughly 32,987 more trees to close a 10-point shortfall against its 30% tree-cover target — about 725.7 t of extra CO₂ absorbed per year once grown.
How are Shagamu'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 Sagamu 121102; the tree count is an estimate derived from that cover.
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