City report · U.S. Virgin Islands
Charlotte Amalie Air quality today
Air quality in Charlotte Amalie currently reads AQI 52 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 52
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 10.0
- tree cover
- 48.5%
- trees in this area
- 119K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Charlotte Amalie, St Thomas 00802, USVI (4.9 sq mi), from a satellite image of Aug 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Charlotte Amalie · AQI 52 (Moderate)
Charlotte Amalie's tree count comes to 118,846 trees across 3.8 sq mi (9.8 km²) of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Charlotte Amalie today: AQI 52, Moderate
Main pollutant: PM2.5 · Observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 77.7 mi (125 km), e.g. Carolina and Caguas
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.0
PM10
3.7
NO₂
0.7
O₃
65.0
SO₂
1.3
CO
114.0
- 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 Charlotte Amalie's daily AQI at 32 on average, from 9 on Nov 7 to an hourly peak of 71 on Nov 4.
Where Charlotte Amalie stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Charlotte Amalie: Healthy tree cover
48.5% tree cover against a 30% healthy-neighborhood target, across 3.8 sq mi (9.8 km²) of land.
Trees in this area
118,846
Target trees
118,846
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Charlotte Amalie lost?
Since 2001, the area within 10 km of Charlotte Amalie has lost about 415 acres (168 hectares) of forest (about 310 football fields): 3.8% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from February 2017 of a 5 × 5 km area about 5 km north of the city center.
- Forest lost since 2001
- 415 acres (168 ha)about 310 football fields
- Share of its forest
- 3.8%of what there was in 2000
- Cleared for good
- 309 acres (125 ha)deforestation: turned into farms, mines or towns
The worst year was 2017, when about 132 acres (53 hectares) of forest were lost.
Acres of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 6 acres (2 ha) | under 1 ha | 7 acres (3 ha) |
| 2002 | 4 acres (2 ha) | under 1 ha | 4 acres (2 ha) |
| 2003 | 20 acres (8 ha) | under 1 ha | 20 acres (8 ha) |
| 2004 | 3 acres (1 ha) | under 1 ha | 4 acres (2 ha) |
| 2005 | 9 acres (4 ha) | under 1 ha | 11 acres (4 ha) |
| 2006 | 26 acres (10 ha) | under 1 ha | 27 acres (11 ha) |
| 2007 | 13 acres (5 ha) | under 1 ha | 13 acres (5 ha) |
| 2008 | 22 acres (9 ha) | 2 acres (1 ha) | 24 acres (10 ha) |
| 2009 | 11 acres (4 ha) | 3 acres (1 ha) | 13 acres (5 ha) |
| 2010 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2011 | 25 acres (10 ha) | 3 acres (1 ha) | 27 acres (11 ha) |
| 2012 | 3 acres (1 ha) | under 1 ha | 3 acres (1 ha) |
| 2013 | 12 acres (5 ha) | under 1 ha | 13 acres (5 ha) |
| 2014 | 16 acres (7 ha) | under 1 ha | 17 acres (7 ha) |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | 93 acres (38 ha) | 39 acres (16 ha) | 132 acres (53 ha) |
| 2018 | 9 acres (4 ha) | 11 acres (5 ha) | 21 acres (8 ha) |
| 2019 | under 1 ha | under 1 ha | 2 acres (1 ha) |
| 2020 | 5 acres (2 ha) | under 1 ha | 5 acres (2 ha) |
| 2021 | 13 acres (5 ha) | under 1 ha | 14 acres (6 ha) |
| 2022 | 5 acres (2 ha) | under 1 ha | 6 acres (3 ha) |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 4 acres (2 ha) | under 1 ha | 4 acres (2 ha) |
| 2025 | 4 acres (2 ha) | 37 acres (15 ha) | 41 acres (17 ha) |
What is causing deforestation around Charlotte Amalie?
- Towns and roadscleared for good63% · 262 acres (106 ha)
- Farms, pasture and plantationscleared for good12% · 48 acres (20 ha)
- Wildfirescan grow back8.7% · 36 acres (15 ha)
Also: 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
- 12,900 acres (5,210 ha)
- Forest in 2020
- 12,700 acres (5,150 ha)
- Overall change
- −138 acres (56 ha)less forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Charlotte Amalie stayed about the same size, at about 12,700 acres (5,150 hectares): new forest grew on about 48 acres (20 hectares), and about 188 acres (76 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 Charlotte Amalie
What is the air quality (AQI) in Charlotte Amalie right now?
The latest reading for Charlotte Amalie shows an AQI of 52 (Moderate), observed Nov 10, 17:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 125 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 Charlotte Amalie today?
At AQI 52 (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 Charlotte Amalie been like this week?
Over the last 7 days, the CAMS air-quality model put Charlotte Amalie's daily AQI at 32 on average, from 9 on Nov 7 to an hourly peak of 71 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Charlotte Amalie lost since 2001?
Since 2001, the area within 10 km of Charlotte Amalie has lost about 415 acres (168 hectares) of forest (about 310 football fields): 3.8% of the forest it had in 2000. Most of it (74%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Charlotte Amalie stayed about the same size, at about 12,700 acres (5,150 hectares): new forest grew on about 48 acres (20 hectares), and about 188 acres (76 hectares) were lost.
What is the tree count in Charlotte Amalie?
Charlotte Amalie has an estimated 118,846 trees across the 3.8 sq mi (9.8 km²) of land measured — 48.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Charlotte Amalie need?
Charlotte Amalie has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Charlotte Amalie'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 1.2 mi (2 km) radius around Charlotte Amalie; the tree count is an estimate derived from that cover.
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