City report · Timor Leste
Suai Air quality today
Air quality in Suai currently reads AQI 58 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 58
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.8
- tree cover
- 55.2%
- trees in this area
- 173K
- more trees needed
- 0
Measured across a 2 km radius around Suai, Timor-Leste (12.57 km²), from a satellite image of Sep 16, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Suai · AQI 58 (Moderate)
Suai's tree count comes to 173,416 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 Suai today: AQI 58, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 04:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.8
PM10
15.9
NO₂
10.7
O₃
10.0
SO₂
0.6
CO
167.0
- 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 Suai's daily AQI at 62 on average, from 46 on Nov 10 to an hourly peak of 105 on Nov 7.
Where Suai stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Suai: Healthy tree cover
55.2% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
173,416
Target trees
173,416
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Suai lost?
Since 2001, the area within 10 km of Suai has lost about 2,190 hectares of forest (about 3,100 football pitches): 14% 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 October 2017 of a 5 × 5 km area about 6 km southwest of the city center.
- Forest lost since 2001
- 2,190 haabout 3,100 football pitches
- Share of its forest
- 14%of what there was in 2000
- Cleared for good
- 2,180 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 69 hectares a year in 2021–2025, against 89 hectares a year in 2016–2020. The worst year was 2012, when about 227 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 | 45 ha | under 1 ha | 45 ha |
| 2002 | 138 ha | 1 ha | 139 ha |
| 2003 | 50 ha | under 1 ha | 50 ha |
| 2004 | 189 ha | 1 ha | 190 ha |
| 2005 | 48 ha | under 1 ha | 48 ha |
| 2006 | 157 ha | under 1 ha | 157 ha |
| 2007 | 66 ha | under 1 ha | 66 ha |
| 2008 | 68 ha | under 1 ha | 68 ha |
| 2009 | 122 ha | under 1 ha | 122 ha |
| 2010 | 16 ha | under 1 ha | 17 ha |
| 2011 | 105 ha | under 1 ha | 105 ha |
| 2012 | 227 ha | under 1 ha | 227 ha |
| 2013 | 20 ha | under 1 ha | 20 ha |
| 2014 | 90 ha | under 1 ha | 90 ha |
| 2015 | 60 ha | under 1 ha | 60 ha |
| 2016 | 108 ha | under 1 ha | 108 ha |
| 2017 | 86 ha | under 1 ha | 86 ha |
| 2018 | 68 ha | under 1 ha | 68 ha |
| 2019 | 74 ha | under 1 ha | 74 ha |
| 2020 | 110 ha | under 1 ha | 110 ha |
| 2021 | 113 ha | under 1 ha | 113 ha |
| 2022 | 79 ha | under 1 ha | 79 ha |
| 2023 | 55 ha | under 1 ha | 55 ha |
| 2024 | 45 ha | under 1 ha | 45 ha |
| 2025 | 46 ha | 3 ha | 50 ha |
What is causing deforestation around Suai?
- Farms, pasture and plantationscleared for good96% · 2,110 ha
- Towns and roadscleared for good2.5% · 55 ha
- Mining and energycleared for good1.1% · 24 ha
Also: wildfires, 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
- 19,200 ha
- Forest in 2020
- 18,500 ha
- Overall change
- −684 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Suai shrank from about 19,200 hectares to 18,500 hectares, a net loss of about 684 hectares (−3.6%). New forest grew on about 276 hectares, but 960 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 Suai
What is the air quality (AQI) in Suai right now?
The latest reading for Suai shows an AQI of 58 (Moderate), observed Nov 11, 04:00 local time via Open-Meteo / CAMS, 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 Suai today?
At AQI 58 (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 Suai been like this week?
Over the last 7 days, the CAMS air-quality model put Suai's daily AQI at 62 on average, from 46 on Nov 10 to an hourly peak of 105 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Suai lost since 2001?
Since 2001, the area within 10 km of Suai has lost about 2,190 hectares of forest (about 3,100 football pitches): 14% 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 has stayed about the same: about 69 hectares a year in 2021–2025, against 89 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Suai shrank from about 19,200 hectares to 18,500 hectares, a net loss of about 684 hectares (−3.6%). New forest grew on about 276 hectares, but 960 hectares were lost.
What is the tree count in Suai?
Suai has an estimated 173,416 trees across the 12.57 km² measured — 55.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Suai need?
Suai has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Suai'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 Suai; the tree count is an estimate derived from that cover.
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