City report · Delta, Nigeria
Warri Air quality today
Air quality in Warri currently reads AQI 156 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 156
Unhealthy
- PM2.5, fine particles (µg/m³)
- 72.7
- tree cover
- 9.9%
- trees in this area
- 28.1K
- more trees needed
- 85.4K
Measured across a 2 km radius around Agbasa, Warri 332104, Delta, Nigeria (12.57 km²), from a satellite image of Sep 30, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Warri · AQI 156 (Unhealthy)
Warri's tree count comes to 28,085 trees across 11.35 km² of land, 30 points below the 40% tree-cover level considered healthy for this area, so roughly 85,389 more trees would close the gap.
Air quality detail
Air quality in Warri today: AQI 156, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 05:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 185 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 185 km, e.g. Buguma and Port Harcourt
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
72.7
PM10
32.9
NO₂
9.0
O₃
31.0
SO₂
1.5
CO
952.0
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Warri's daily AQI at 67 on average, from 60 on Nov 6 to an hourly peak of 97 on Nov 10.
Where Warri stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Warri: Critically low
9.9% tree cover against a 40% healthy-neighborhood target, across 11.35 km² of land.
Trees in this area
28,085
Target trees
113,474
More trees needed
85,389
CO₂ if planted / yr
1,879 t
Deforestation · 2001–2025
How much forest has Warri lost?
Since 2001, the area within 10 km of Warri has lost about 1,850 hectares of forest (about 2,600 football pitches): 12% of the forest it had in 2000. Most of it (82%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from February 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 1,850 haabout 2,600 football pitches
- Share of its forest
- 12%of what there was in 2000
- Cleared for good
- 1,530 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 171 hectares a year in 2021–2025, up from 49 hectares a year in 2016–2020. The worst year was 2025, when about 316 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 | 61 ha | 2 ha | 64 ha |
| 2002 | 73 ha | 3 ha | 76 ha |
| 2003 | 5 ha | under 1 ha | 5 ha |
| 2004 | 19 ha | 3 ha | 22 ha |
| 2005 | 10 ha | under 1 ha | 11 ha |
| 2006 | 41 ha | 2 ha | 43 ha |
| 2007 | 68 ha | under 1 ha | 69 ha |
| 2008 | 28 ha | under 1 ha | 29 ha |
| 2009 | 109 ha | 3 ha | 112 ha |
| 2010 | 73 ha | 5 ha | 78 ha |
| 2011 | 106 ha | 4 ha | 110 ha |
| 2012 | 31 ha | 2 ha | 33 ha |
| 2013 | 26 ha | 13 ha | 39 ha |
| 2014 | 54 ha | 5 ha | 59 ha |
| 2015 | 6 ha | under 1 ha | 6 ha |
| 2016 | 18 ha | 2 ha | 19 ha |
| 2017 | 83 ha | 17 ha | 100 ha |
| 2018 | 24 ha | 5 ha | 29 ha |
| 2019 | 12 ha | under 1 ha | 12 ha |
| 2020 | 76 ha | 9 ha | 85 ha |
| 2021 | 40 ha | 25 ha | 65 ha |
| 2022 | 117 ha | 47 ha | 164 ha |
| 2023 | 105 ha | 28 ha | 133 ha |
| 2024 | 134 ha | 44 ha | 178 ha |
| 2025 | 211 ha | 105 ha | 316 ha |
What is causing deforestation around Warri?
- Towns and roadscleared for good52% · 968 ha
- Farms, pasture and plantationscleared for good26% · 485 ha
- Shifting farmingcan grow back15% · 285 ha
Also: mining and energy, 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
- 9,730 ha
- Forest in 2020
- 8,850 ha
- Overall change
- −878 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Warri shrank from about 9,730 hectares to 8,850 hectares, a net loss of about 878 hectares (−9%). New forest grew on about 382 hectares, but 1,260 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 Warri
What is the air quality (AQI) in Warri right now?
The latest reading for Warri shows an AQI of 156 (Unhealthy), observed Nov 11, 05:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 185 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Warri today?
At AQI 156 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Warri been like this week?
Over the last 7 days, the CAMS air-quality model put Warri's daily AQI at 67 on average, from 60 on Nov 6 to an hourly peak of 97 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Warri lost since 2001?
Since 2001, the area within 10 km of Warri has lost about 1,850 hectares of forest (about 2,600 football pitches): 12% of the forest it had in 2000. Most of it (82%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is speeding up: about 171 hectares a year in 2021–2025, up from 49 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Warri shrank from about 9,730 hectares to 8,850 hectares, a net loss of about 878 hectares (−9%). New forest grew on about 382 hectares, but 1,260 hectares were lost.
What is the tree count in Warri?
Warri has an estimated 28,085 trees across the 11.35 km² of land measured — 9.9% tree cover, 30 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Warri need?
Warri needs roughly 85,389 more trees to close a 30-point shortfall against its 40% tree-cover target — about 1,879 t of extra CO₂ absorbed per year once grown.
How are Warri'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 Agbasa; the tree count is an estimate derived from that cover.
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