City report · United States
Anchorage Air quality today
Air quality in Anchorage currently reads AQI 34 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 34
Good
- PM2.5, fine particles (µg/m³)
- 6.6
- tree cover
- 29.4%
- trees in this area
- 58.6K
- more trees needed
- 1.2K
Measured across a 1.2 mi (2 km) radius around Downtown, Anchorage, AK, USA (4.9 sq mi), from a satellite image of Aug 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Anchorage · AQI 34 (Good)
Anchorage's tree count comes to 58,558 trees across 3.1 sq mi (7.97 km²) of land, 1 points below the 30% tree-cover level considered healthy for this area, so roughly 1,195 more trees would close the gap.
Air quality detail
Air quality in Anchorage today: AQI 34, Good
Main pollutant: PM2.5 · Observed Nov 10, 15:00 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
6.6
PM10
6.7
NO₂
43.0
O₃
34.0
SO₂
1.2
CO
570.0
- 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 Anchorage's daily AQI at 38 on average, from 29 on Nov 6 to an hourly peak of 72 on Nov 7.
Where Anchorage stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Anchorage: Below target
29.4% tree cover against a 30% healthy-neighborhood target, across 3.1 sq mi (7.97 km²) of land.
Trees in this area
58,558
Target trees
59,753
More trees needed
1,195
CO₂ if planted / yr
26.3 t
Deforestation · 2001–2025
How much forest has Anchorage lost?
Since 2001, the area within 10 km of Anchorage has lost about 2,000 acres (808 hectares) of forest (about 1,500 football fields): 7.6% of the forest it had in 2000. Most of it (89%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 2,000 acres (808 ha)about 1,500 football fields
- Share of its forest
- 7.6%of what there was in 2000
- Cleared for good
- 1,780 acres (719 ha)deforestation: turned into farms, mines or towns
The worst year was 2023, when about 331 acres (134 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 | 93 acres (38 ha) | 4 acres (2 ha) | 97 acres (39 ha) |
| 2002 | 73 acres (30 ha) | under 1 ha | 75 acres (30 ha) |
| 2003 | 63 acres (25 ha) | under 1 ha | 63 acres (26 ha) |
| 2004 | 108 acres (44 ha) | 3 acres (1 ha) | 111 acres (45 ha) |
| 2005 | 180 acres (73 ha) | 131 acres (53 ha) | 311 acres (126 ha) |
| 2006 | 34 acres (14 ha) | 17 acres (7 ha) | 51 acres (21 ha) |
| 2007 | 147 acres (60 ha) | under 1 ha | 148 acres (60 ha) |
| 2008 | 77 acres (31 ha) | under 1 ha | 77 acres (31 ha) |
| 2009 | 96 acres (39 ha) | 7 acres (3 ha) | 102 acres (41 ha) |
| 2010 | 10 acres (4 ha) | 3 acres (1 ha) | 13 acres (5 ha) |
| 2011 | 63 acres (25 ha) | 3 acres (1 ha) | 66 acres (27 ha) |
| 2012 | 100 acres (41 ha) | 27 acres (11 ha) | 128 acres (52 ha) |
| 2013 | 22 acres (9 ha) | 7 acres (3 ha) | 29 acres (12 ha) |
| 2014 | 5 acres (2 ha) | under 1 ha | 6 acres (2 ha) |
| 2015 | 27 acres (11 ha) | under 1 ha | 28 acres (12 ha) |
| 2016 | 21 acres (9 ha) | under 1 ha | 22 acres (9 ha) |
| 2017 | 18 acres (7 ha) | under 1 ha | 18 acres (7 ha) |
| 2018 | 58 acres (24 ha) | under 1 ha | 59 acres (24 ha) |
| 2019 | 66 acres (27 ha) | under 1 ha | 67 acres (27 ha) |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 15 acres (6 ha) | under 1 ha | 15 acres (6 ha) |
| 2022 | 42 acres (17 ha) | 4 acres (2 ha) | 46 acres (19 ha) |
| 2023 | 331 acres (134 ha) | under 1 ha | 331 acres (134 ha) |
| 2024 | 105 acres (43 ha) | under 1 ha | 106 acres (43 ha) |
| 2025 | 22 acres (9 ha) | 6 acres (2 ha) | 28 acres (11 ha) |
What is causing deforestation around Anchorage?
- Towns and roadscleared for good56% · 1,120 acres (454 ha)
- Mining and energycleared for good33% · 652 acres (264 ha)
- Loggingcan grow back9.3% · 185 acres (75 ha)
Also: wildfires, farms, pasture and plantations, 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
- 22,000 acres (8,890 ha)
- Forest in 2020
- 21,300 acres (8,640 ha)
- Overall change
- −615 acres (249 ha)less forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Anchorage shrank from about 22,000 acres (8,890 hectares) to 21,300 acres (8,640 hectares), a net loss of about 615 acres (249 hectares) (−2.8%). New forest grew on about 786 acres (318 hectares), but 1,400 acres (567 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 Anchorage
What is the air quality (AQI) in Anchorage right now?
The latest reading for Anchorage shows an AQI of 34 (Good), observed Nov 10, 15:00 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 Anchorage today?
At AQI 34 (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 Anchorage been like this week?
Over the last 7 days, the CAMS air-quality model put Anchorage's daily AQI at 38 on average, from 29 on Nov 6 to an hourly peak of 72 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 Anchorage lost since 2001?
Since 2001, the area within 10 km of Anchorage has lost about 2,000 acres (808 hectares) of forest (about 1,500 football fields): 7.6% of the forest it had in 2000. Most of it (89%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Anchorage shrank from about 22,000 acres (8,890 hectares) to 21,300 acres (8,640 hectares), a net loss of about 615 acres (249 hectares) (−2.8%). New forest grew on about 786 acres (318 hectares), but 1,400 acres (567 hectares) were lost.
What is the tree count in Anchorage?
Anchorage has an estimated 58,558 trees across the 3.1 sq mi (7.97 km²) of land measured — 29.4% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Anchorage need?
Anchorage needs roughly 1,195 more trees to close a 1-point shortfall against its 30% tree-cover target — about 26.3 t of extra CO₂ absorbed per year once grown.
How are Anchorage'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 Downtown; the tree count is an estimate derived from that cover.
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