City report · Lagos, Nigeria
Irewe Air quality today
Air quality in Irewe currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 62
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 15.0
- tree cover
- 74.7%
- trees in this area
- 171K
- more trees needed
- 0
Measured across a 2 km radius around Ojo, Lagos, Nigeria (12.57 km²), from a satellite image of Jan 24, 2025. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Irewe · AQI 62 (Moderate)
Irewe's tree count comes to 170,610 trees across 9.14 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Irewe today: AQI 62, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 18:14 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Mile 2 Interchange, 13.8 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.0
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · HabitatMap, IQAir, LAMATA, HabitatMap · AirCasting
- 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 Irewe's daily AQI at 66 on average, from 62 on Nov 5 to an hourly peak of 93 on Nov 6.
Where Irewe stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Irewe: Healthy tree cover
74.7% tree cover against a 30% healthy-neighborhood target, across 9.14 km² of land.
Trees in this area
170,610
Target trees
170,610
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Irewe lost?
Since 2001, the area within 10 km of Irewe has lost about 300 hectares of forest (about 420 football pitches): 6% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2020: satellite photo from January 2020 of a 5 × 5 km area about 6 km northwest of the city center.
- Forest lost since 2001
- 300 haabout 420 football pitches
- Share of its forest
- 6%of what there was in 2000
- Cleared for good
- 255 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 53 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 | 1 ha | under 1 ha | 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 2 ha | under 1 ha | 3 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 6 ha | under 1 ha | 6 ha |
| 2008 | 5 ha | under 1 ha | 6 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | 2 ha | under 1 ha | 2 ha |
| 2011 | 7 ha | under 1 ha | 7 ha |
| 2012 | 8 ha | under 1 ha | 8 ha |
| 2013 | 4 ha | 2 ha | 6 ha |
| 2014 | 2 ha | under 1 ha | 2 ha |
| 2015 | 2 ha | under 1 ha | 3 ha |
| 2016 | 10 ha | 2 ha | 11 ha |
| 2017 | 41 ha | 13 ha | 53 ha |
| 2018 | 26 ha | 5 ha | 31 ha |
| 2019 | 13 ha | under 1 ha | 13 ha |
| 2020 | 18 ha | 2 ha | 20 ha |
| 2021 | 14 ha | 3 ha | 17 ha |
| 2022 | 13 ha | 1 ha | 14 ha |
| 2023 | 18 ha | 4 ha | 22 ha |
| 2024 | 28 ha | 4 ha | 32 ha |
| 2025 | 34 ha | 7 ha | 41 ha |
What is causing deforestation around Irewe?
- Farms, pasture and plantationscleared for good53% · 160 ha
- Towns and roadscleared for good32% · 96 ha
- Shifting farmingcan grow back7.8% · 24 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
- 1,720 ha
- Forest in 2020
- 1,800 ha
- Overall change
- +75 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Irewe grew from about 1,720 hectares to 1,800 hectares, a net gain of about 75 hectares (+4.4%). New forest grew on about 236 hectares, while 161 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 Irewe
What is the air quality (AQI) in Irewe right now?
The latest reading for Irewe shows an AQI of 62 (Moderate), measured Nov 11, 18:14 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Mile 2 Interchange, 13.8 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Irewe today?
At AQI 62 (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 Irewe been like this week?
Over the last 7 days, the CAMS air-quality model put Irewe's daily AQI at 66 on average, from 62 on Nov 5 to an hourly peak of 93 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 Irewe lost since 2001?
Since 2001, the area within 10 km of Irewe has lost about 300 hectares of forest (about 420 football pitches): 6% of the forest it had in 2000. Most of it (85%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Irewe grew from about 1,720 hectares to 1,800 hectares, a net gain of about 75 hectares (+4.4%). New forest grew on about 236 hectares, while 161 hectares were lost.
What is the tree count in Irewe?
Irewe has an estimated 170,610 trees across the 9.14 km² of land measured — 74.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Irewe need?
Irewe has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Irewe's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Ojo, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 Ojo; the tree count is an estimate derived from that cover.
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