City report · Gabon
Oyem Air quality today
Air quality in Oyem currently reads AQI 41 (Good): Air quality is satisfactory for everyone.
AQI 41
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 9.0
- tree cover
- 49.1%
- trees in this area
- 154K
- more trees needed
- 0
Measured across a 2 km radius around Oyem, Gabon (12.57 km²), from a satellite image of Mar 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Oyem · AQI 41 (Good)
Oyem's tree count comes to 154,252 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Oyem today: AQI 41, Good
Main pollutant: PM2.5 · Observed Nov 10, 16:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
9.0
PM10
16.1
NO₂
0.4
O₃
60.0
SO₂
0.5
CO
205.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Oyem's daily AQI at 42 on average, from 35 on Nov 5 to an hourly peak of 74 on Nov 9.
Where Oyem stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Oyem: Healthy tree cover
49.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
154,252
Target trees
154,252
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Oyem lost?
Since 2001, the area within 10 km of Oyem has lost about 5,520 hectares of forest (about 7,700 football pitches): 18% of the forest it had in 2000. Most of it was lost to shifting farming, so much of it can grow back. About 1,070 hectares (19%) was deforestation: forest cleared for good for farms, mines or towns.
2019: satellite photo from January 2019 of a 5 × 5 km area about 4 km northwest of the city center.
- Forest lost since 2001
- 5,520 haabout 7,700 football pitches
- Share of its forest
- 18%of what there was in 2000
- Cleared for good
- 1,070 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 272 hectares a year in 2021–2025, against 306 hectares a year in 2016–2020. The worst year was 2019, when about 480 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 | 18 ha | 136 ha | 154 ha |
| 2002 | 8 ha | 113 ha | 121 ha |
| 2003 | 1 ha | 13 ha | 14 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 37 ha | 119 ha | 156 ha |
| 2006 | 37 ha | 100 ha | 137 ha |
| 2007 | 35 ha | 76 ha | 111 ha |
| 2008 | 53 ha | 239 ha | 291 ha |
| 2009 | 47 ha | 243 ha | 290 ha |
| 2010 | 3 ha | 9 ha | 12 ha |
| 2011 | 104 ha | 245 ha | 349 ha |
| 2012 | 67 ha | 148 ha | 215 ha |
| 2013 | 5 ha | 88 ha | 93 ha |
| 2014 | 66 ha | 377 ha | 443 ha |
| 2015 | 72 ha | 173 ha | 245 ha |
| 2016 | 40 ha | 163 ha | 203 ha |
| 2017 | 103 ha | 332 ha | 435 ha |
| 2018 | 14 ha | 111 ha | 125 ha |
| 2019 | 102 ha | 378 ha | 480 ha |
| 2020 | 51 ha | 236 ha | 287 ha |
| 2021 | 28 ha | 200 ha | 228 ha |
| 2022 | 84 ha | 300 ha | 384 ha |
| 2023 | 34 ha | 253 ha | 287 ha |
| 2024 | 34 ha | 270 ha | 304 ha |
| 2025 | 27 ha | 128 ha | 155 ha |
What is causing deforestation around Oyem?
- Shifting farmingcan grow back79% · 4,360 ha
- Towns and roadscleared for good13% · 735 ha
- Farms, pasture and plantationscleared for good6% · 333 ha
Also: logging, 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
- 30,000 ha
- Forest in 2020
- 28,900 ha
- Overall change
- −1,160 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Oyem shrank from about 30,000 hectares to 28,900 hectares, a net loss of about 1,160 hectares (−3.9%). New forest grew on about 176 hectares, but 1,330 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 Oyem
Same 2 km radius, same index — so they compare directly.
- Ebebiyin67.4 km
Equatorial Guinea
- Tree cover
- 59%
- Air quality
- 48
- Ciudad de la Paz84.0 km
Equatorial Guinea
- Tree cover
- 52%
- Air quality
- 26
- Ébolowa152.3 km
Cameroon
- Tree cover
- 55%
- Air quality
- 104
- Bata203.7 km
Equatorial Guinea
- Tree cover
- 19%
- Air quality
- 31
- Yaoundé252.2 km
Cameroon
- Tree cover
- 10%
- Air quality
- 99
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Frequently asked
Questions about Oyem
What is the air quality (AQI) in Oyem right now?
The latest reading for Oyem shows an AQI of 41 (Good), observed Nov 10, 16:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Oyem today?
At AQI 41 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Oyem been like this week?
Over the last 7 days, the CAMS air-quality model put Oyem's daily AQI at 42 on average, from 35 on Nov 5 to an hourly peak of 74 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 Oyem lost since 2001?
Since 2001, the area within 10 km of Oyem has lost about 5,520 hectares of forest (about 7,700 football pitches): 18% of the forest it had in 2000. Most of it was lost to shifting farming, so much of it can grow back. About 1,070 hectares (19%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 272 hectares a year in 2021–2025, against 306 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Oyem shrank from about 30,000 hectares to 28,900 hectares, a net loss of about 1,160 hectares (−3.9%). New forest grew on about 176 hectares, but 1,330 hectares were lost.
What is the tree count in Oyem?
Oyem has an estimated 154,252 trees across the 12.57 km² measured — 49.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Oyem need?
Oyem has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Oyem'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 Oyem; the tree count is an estimate derived from that cover.
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