City report · Brunei
Tutong Air quality today
Air quality in Tutong currently reads AQI 65 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 65
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 14.9
- tree cover
- 61.8%
- trees in this area
- 163K
- more trees needed
- 0
Measured across a 2 km radius around Kampung Sengkarai, Brunei (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tutong · AQI 65 (Moderate)
Tutong's tree count comes to 163,086 trees across 10.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Tutong today: AQI 65, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 205 km, e.g. Bandar Seri Begawan and Kuala Belait
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.9
PM10
9.0
NO₂
5.1
O₃
42.0
SO₂
2.4
CO
176.0
- 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 Tutong's daily AQI at 42 on average, from 28 on Nov 8 to an hourly peak of 66 on Nov 5.
Where Tutong stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tutong: Healthy tree cover
61.8% tree cover against a 30% healthy-neighborhood target, across 10.56 km² of land.
Trees in this area
163,086
Target trees
163,086
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Tutong lost?
Since 2001, the area within 10 km of Tutong has lost about 1,910 hectares of forest (about 2,700 football pitches): 14% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from March 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 1,910 haabout 2,700 football pitches
- Share of its forest
- 14%of what there was in 2000
- Cleared for good
- 1,640 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 39 hectares a year in 2021–2025, down from 127 hectares a year in 2016–2020. The worst year was 2016, when about 376 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 | 22 ha | 5 ha | 27 ha |
| 2002 | 51 ha | 19 ha | 70 ha |
| 2003 | 47 ha | 4 ha | 51 ha |
| 2004 | 96 ha | 6 ha | 102 ha |
| 2005 | 42 ha | 11 ha | 53 ha |
| 2006 | 22 ha | under 1 ha | 23 ha |
| 2007 | 56 ha | 8 ha | 64 ha |
| 2008 | 53 ha | 4 ha | 57 ha |
| 2009 | 142 ha | under 1 ha | 142 ha |
| 2010 | 34 ha | under 1 ha | 35 ha |
| 2011 | 145 ha | 3 ha | 148 ha |
| 2012 | 103 ha | 3 ha | 106 ha |
| 2013 | 18 ha | 12 ha | 30 ha |
| 2014 | 81 ha | 43 ha | 124 ha |
| 2015 | 39 ha | 4 ha | 43 ha |
| 2016 | 349 ha | 27 ha | 376 ha |
| 2017 | 30 ha | 2 ha | 32 ha |
| 2018 | 25 ha | under 1 ha | 25 ha |
| 2019 | 79 ha | 26 ha | 105 ha |
| 2020 | 55 ha | 43 ha | 97 ha |
| 2021 | 15 ha | 20 ha | 35 ha |
| 2022 | 35 ha | 4 ha | 40 ha |
| 2023 | 26 ha | 8 ha | 33 ha |
| 2024 | 49 ha | 9 ha | 59 ha |
| 2025 | 28 ha | 3 ha | 31 ha |
What is causing deforestation around Tutong?
- Farms, pasture and plantationscleared for good66% · 1,260 ha
- Mining and energycleared for good10% · 198 ha
- Towns and roadscleared for good9.5% · 182 ha
Also: wildfires, logging, 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
- 11,700 ha
- Forest in 2020
- 11,700 ha
- Overall change
- −3 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tutong stayed about the same size, at about 11,700 hectares: new forest grew on about 924 hectares, and about 926 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 Tutong
Same 2 km radius, same index — so they compare directly.
- Miri85.6 km
Malaysia
- Tree cover
- 48%
- Air quality
- 37
- Kota Kinabalu204.5 km
Malaysia
- Tree cover
- 43%
- Air quality
- 40
- Bintulu255.4 km
Malaysia
- Tree cover
- 44%
- Air quality
- 40
- Tawau364.7 km
Malaysia
- Tree cover
- 24%
- Air quality
- 67
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Frequently asked
Questions about Tutong
What is the air quality (AQI) in Tutong right now?
The latest reading for Tutong shows an AQI of 65 (Moderate), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 205 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 Tutong today?
At AQI 65 (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 Tutong been like this week?
Over the last 7 days, the CAMS air-quality model put Tutong's daily AQI at 42 on average, from 28 on Nov 8 to an hourly peak of 66 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Tutong lost since 2001?
Since 2001, the area within 10 km of Tutong has lost about 1,910 hectares of forest (about 2,700 football pitches): 14% of the forest it had in 2000. Most of it (86%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 39 hectares a year in 2021–2025, down from 127 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Tutong stayed about the same size, at about 11,700 hectares: new forest grew on about 924 hectares, and about 926 hectares were lost.
What is the tree count in Tutong?
Tutong has an estimated 163,086 trees across the 10.56 km² of land measured — 61.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Tutong need?
Tutong has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Tutong'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 Kampung Sengkarai; the tree count is an estimate derived from that cover.
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