City report · Guam
Hagåtña Air quality today
Air quality in Hagåtña currently reads AQI 11 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 11
Good
- PM2.5, fine particles (µg/m³)
- 2.0
- tree cover
- 50.5%
- trees in this area
- 100K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Hagåtña, Guam (4.9 sq mi), from a satellite image of Jul 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hagåtña · AQI 11 (Good)
Hagåtña's tree count comes to 99,950 trees across 3.1 sq mi (7.92 km²) of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Hagåtña today: AQI 11, Good
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · AAFB, Yigo, GU, 13.4 mi (21.5 km) away
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.0
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Neo_42
- 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 Hagåtña's daily AQI at 34 on average, from 28 on Nov 8 to an hourly peak of 53 on Nov 6.
Where Hagåtña stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hagåtña: Healthy tree cover
50.5% tree cover against a 30% healthy-neighborhood target, across 3.1 sq mi (7.92 km²) of land.
Trees in this area
99,950
Target trees
99,950
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Hagåtña lost?
There was almost no forest around Hagåtña in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
The forest-loss maps don't cover this area.
2021: satellite photo from March 2021 of a 5 × 5 km area in the city center.
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. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Hagåtña
Same 2 km radius, same index — so they compare directly.
- Saipan221.4 km
Northern Mariana Islands
- Tree cover
- 79%
- Air quality
- 41
- Ngerulmud1290.6 km
Palau
- Tree cover
- 79%
- Air quality
- 48
- Palikir1637.7 km
Micronesia
- Tree cover
- 99%
- Air quality
- 13
- Jayapura1834.9 km
Indonesia
- Tree cover
- 60%
- Air quality
- 26
- Manokwari1982.2 km
Indonesia
- Tree cover
- 46%
- Air quality
- 64
- Bayugan2138.8 km
Philippines
- Tree cover
- 55%
- Air quality
- 12
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Frequently asked
Questions about Hagåtña
What is the air quality (AQI) in Hagåtña right now?
The latest reading for Hagåtña shows an AQI of 11 (Good), measured Nov 12, 01:00 local time by the AAFB, Yigo, GU ground monitoring station, 13.4 mi (21.5 km) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Hagåtña today?
At AQI 11 (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 Hagåtña been like this week?
Over the last 7 days, the CAMS air-quality model put Hagåtña's daily AQI at 34 on average, from 28 on Nov 8 to an hourly peak of 53 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Hagåtña lost since 2001?
There was almost no forest around Hagåtña in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
What is the tree count in Hagåtña?
Hagåtña has an estimated 99,950 trees across the 3.1 sq mi (7.92 km²) of land measured — 50.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hagåtña need?
Hagåtña has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Hagåtña's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Hagåtña, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 1.2 mi (2 km) radius around Hagåtña; the tree count is an estimate derived from that cover.
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