City report · Palau
Ngerulmud Air quality today
Air quality in Ngerulmud currently reads AQI 48 (Good): Air quality is satisfactory for everyone.
AQI 48
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 8.7
- tree cover
- 78.9%
- trees in this area
- 181K
- more trees needed
- 0
Measured across a 2 km radius around Ngerulmud, Melekeok, Palau (12.57 km²), from a satellite image of Jun 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ngerulmud · AQI 48 (Good)
Ngerulmud's tree count comes to 180,698 trees across 9.16 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Ngerulmud today: AQI 48, Good
Main pollutant: PM2.5 · Observed Nov 11, 02:00 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
8.7
PM10
15.0
NO₂
0.2
O₃
53.0
SO₂
0.4
CO
107.0
- 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 Ngerulmud's daily AQI at 26 on average, from 14 on Nov 9 to an hourly peak of 48 on Nov 11.
Where Ngerulmud stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ngerulmud: Healthy tree cover
78.9% tree cover against a 30% healthy-neighborhood target, across 9.16 km² of land.
Trees in this area
180,698
Target trees
180,698
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Ngerulmud lost?
Since 2001, the area within 10 km of Ngerulmud has lost about 216 hectares of forest (about 300 football pitches): 1.6% of the forest it had in 2000. The biggest cause was logging (42%), after which forest can grow back. About 25 hectares (12%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from May 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 216 haabout 300 football pitches
- Share of its forest
- 1.6%of what there was in 2000
- Cleared for good
- 25 hadeforestation: turned into farms, mines or towns
The worst year was 2007, when about 30 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 | 3 ha | 10 ha | 12 ha |
| 2002 | 2 ha | 25 ha | 27 ha |
| 2003 | under 1 ha | 9 ha | 9 ha |
| 2004 | 5 ha | 10 ha | 15 ha |
| 2005 | 3 ha | 21 ha | 24 ha |
| 2006 | 1 ha | 13 ha | 14 ha |
| 2007 | 4 ha | 26 ha | 30 ha |
| 2008 | 3 ha | 20 ha | 24 ha |
| 2009 | under 1 ha | 11 ha | 11 ha |
| 2010 | under 1 ha | 8 ha | 8 ha |
| 2011 | under 1 ha | 14 ha | 15 ha |
| 2012 | under 1 ha | 10 ha | 11 ha |
| 2013 | under 1 ha | 2 ha | 2 ha |
| 2014 | under 1 ha | 4 ha | 5 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | 2 ha | 2 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | 1 ha |
| 2021 | under 1 ha | 1 ha | 1 ha |
| 2022 | under 1 ha | 2 ha | 2 ha |
| 2023 | under 1 ha | under 1 ha | 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | 1 ha | 1 ha |
What is causing deforestation around Ngerulmud?
- Loggingcan grow back42% · 91 ha
- Storms, floods and other natural causescan grow back34% · 73 ha
- Shifting farmingcan grow back8.2% · 18 ha
Also: farms, pasture and plantations, towns and roads, 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
- 13,400 ha
- Forest in 2020
- 13,400 ha
- Overall change
- −31 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ngerulmud stayed about the same size, at about 13,400 hectares: new forest grew on about 29 hectares, and about 61 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 Ngerulmud
Same 2 km radius, same index — so they compare directly.
- Mati929.4 km
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- Tree cover
- 66%
- Air quality
- 4
- Manokwari932.1 km
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- Tree cover
- 46%
- Air quality
- 64
- Magugpo Poblacion972.3 km
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- Tree cover
- 39%
- Air quality
- 3
- Panabo986.0 km
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- Tree cover
- 49%
- Air quality
- 6
- Bayugan986.3 km
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- Tree cover
- 55%
- Air quality
- 3
- Davao995.0 km
Philippines
- Tree cover
- 10%
- Air quality
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Frequently asked
Questions about Ngerulmud
What is the air quality (AQI) in Ngerulmud right now?
The latest reading for Ngerulmud shows an AQI of 48 (Good), observed Nov 11, 02:00 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 Ngerulmud today?
At AQI 48 (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 Ngerulmud been like this week?
Over the last 7 days, the CAMS air-quality model put Ngerulmud's daily AQI at 26 on average, from 14 on Nov 9 to an hourly peak of 48 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Ngerulmud lost since 2001?
Since 2001, the area within 10 km of Ngerulmud has lost about 216 hectares of forest (about 300 football pitches): 1.6% of the forest it had in 2000. The biggest cause was logging (42%), after which forest can grow back. About 25 hectares (12%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Ngerulmud stayed about the same size, at about 13,400 hectares: new forest grew on about 29 hectares, and about 61 hectares were lost.
What is the tree count in Ngerulmud?
Ngerulmud has an estimated 180,698 trees across the 9.16 km² of land measured — 78.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Ngerulmud need?
Ngerulmud has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Ngerulmud'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 Ngerulmud; the tree count is an estimate derived from that cover.
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