City report · California, United States
Huntington Beach Air quality today
Air quality in Huntington Beach currently reads AQI 66 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 66
Moderate
- PM2.5, fine particles (µg/m³)
- 16.9
- tree cover
- 9.0%
- trees in this area
- 19.8K
- more trees needed
- 46.1K
Measured across a 1.2 mi (2 km) radius around Huntington Beach, CA, USA (4.9 sq mi), from a satellite image of Sep 14, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Huntington Beach · AQI 66 (Moderate)
Huntington Beach's tree count comes to 19,764 trees across 3.4 sq mi (8.79 km²) of land, 21 points below the 30% tree-cover level considered healthy for this area, so roughly 46,115 more trees would close the gap.
Air quality detail
Air quality in Huntington Beach today: AQI 66, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Huntington Beach, 2.5 mi (4.1 km) away · median of 4 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
16.9
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, My Casa, DS
- 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 Huntington Beach's daily AQI at 52 on average, from 47 on Nov 7 to an hourly peak of 78 on Nov 4.
Where Huntington Beach stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Huntington Beach: Critically low
9.0% tree cover against a 30% healthy-neighborhood target, across 3.4 sq mi (8.79 km²) of land.
Trees in this area
19,764
Target trees
65,879
More trees needed
46,115
CO₂ if planted / yr
1,015 t
Deforestation · 2001–2025
How much forest has Huntington Beach lost?
There was very little forest around Huntington Beach in 2000, about 158 acres (64 hectares), and about 8 acres (3 hectares) of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
The worst year was 2008, when about 2 acres (1 hectare) 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | 2 acres (1 ha) |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 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 | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Huntington Beach?
- Towns and roadscleared for good79% · 7 acres (3 ha)
- Unknown causescause unknown18% · under 1 ha
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
- 726 acres (294 ha)
- Forest in 2020
- 793 acres (321 ha)
- Overall change
- +67 acres (27 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Huntington Beach grew from about 726 acres (294 hectares) to 793 acres (321 hectares), a net gain of about 67 acres (27 hectares) (+9.2%). New forest grew on about 79 acres (32 hectares), while 12 acres (5 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 Huntington Beach
Same 2 km radius, same index — so they compare directly.
- Santa Ana15.4 km
United States
- Tree cover
- 13%
- Air quality
- 33
- Irvine16.3 km
United States
- Tree cover
- 28%
- Air quality
- 24
- Anaheim21.0 km
United States
- Tree cover
- 11%
- Air quality
- 57
- Long Beach21.2 km
United States
- Tree cover
- 6%
- Air quality
- 75
- Compton33.2 km
United States
- Tree cover
- 7%
- Air quality
- 65
- Downey33.5 km
United States
- Tree cover
- 11%
- Air quality
- 55
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Frequently asked
Questions about Huntington Beach
What is the air quality (AQI) in Huntington Beach right now?
The latest reading for Huntington Beach shows an AQI of 66 (Moderate), measured Nov 11, 07:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Huntington Beach, 2.5 mi (4.1 km) away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Huntington Beach today?
At AQI 66 (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 Huntington Beach been like this week?
Over the last 7 days, the CAMS air-quality model put Huntington Beach's daily AQI at 52 on average, from 47 on Nov 7 to an hourly peak of 78 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 Huntington Beach lost since 2001?
There was very little forest around Huntington Beach in 2000, about 158 acres (64 hectares), and about 8 acres (3 hectares) of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here. Comparing satellite maps from 2000 and 2020, the forest around Huntington Beach grew from about 726 acres (294 hectares) to 793 acres (321 hectares), a net gain of about 67 acres (27 hectares) (+9.2%). New forest grew on about 79 acres (32 hectares), while 12 acres (5 hectares) were lost.
What is the tree count in Huntington Beach?
Huntington Beach has an estimated 19,764 trees across the 3.4 sq mi (8.79 km²) of land measured — 9.0% tree cover, 21 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Huntington Beach need?
Huntington Beach needs roughly 46,115 more trees to close a 21-point shortfall against its 30% tree-cover target — about 1,015 t of extra CO₂ absorbed per year once grown.
How are Huntington Beach's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Huntington Beach, 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 Huntington Beach; the tree count is an estimate derived from that cover.
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