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Air quality now: AQI67Moderate, Compton

City report · California, United States

Compton Air quality today

Air quality in Compton currently reads AQI 67 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.

AQI 67

Air quality right now

Moderate

Main pollutant: PM2.5
PM2.5, fine particles (µg/m³)
17.7
tree cover
7.1%
trees in this area
22.3K
more trees needed
71.9K

Measured across a 1.2 mi (2 km) radius around Compton, 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.

Compton · AQI 67 (Moderate)

Dark green marks tree cover detected inside the study radius.Sentinel-2 L2A (ESA Copernicus) via Earth Search, captured Sep 14, 2026

Compton's tree count comes to 22,305 trees across 4.9 sq mi (12.57 km²), 23 points below the 30% tree-cover level considered healthy for this area, so roughly 71,942 more trees would close the gap.

Air quality detail

Air quality in Compton today: AQI 67, Moderate

Main pollutant: PM2.5 · Observed Nov 11, 08:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.

Ground station · Compton, 0.9 mi (1.5 km) away · median of 2 stations

Health signal

Unusually sensitive people should consider limiting long outdoor exertion.

PM2.5

17.7

PM10

—

NO₂

106.1

O₃

7.8

SO₂

—

CO

1374.7

Data: OpenAQ · AirNow

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 Compton's daily AQI at 57 on average, from 46 on Nov 7 to an hourly peak of 83 on Nov 4.

Last 7 days · model estimateavg 57 · peak 83
Nov 4: AQI 67 (peak 83)Nov 5: AQI 57 (peak 69)Nov 6: AQI 47 (peak 65)Nov 7: AQI 46 (peak 58)Nov 8: AQI 52 (peak 62)Nov 9: AQI 60 (peak 74)Nov 10: AQI 70 (peak 78)
Nov 4Nov 10

Where Compton stands: the most polluted cities in the world right now · the cleanest

Tree cover detail

Tree cover in Compton: Critically low

7.1% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).

23 points below target

Trees in this area

22,305

Target trees

94,247

More trees needed

71,942

CO₂ if planted / yr

1,583 t

Deforestation · 2001–2025

How much forest has Compton lost?

There was very little forest around Compton in 2000, about 64 acres (26 hectares), and about 12 acres (5 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.

Satellite image of the area around Compton, July 2017

2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.

The worst year was 2015, when about 10 acres (4 hectares) of forest were lost.

Forest lost each year around Compton, 2001–2025

Acres of forest lost each year

Forest lost each year around Compton, 2001–2025. Use the left and right arrow keys to read each year.9.64

Show the figures as a table
Forest lost each year around Compton, 2001–2025
YearCleared for goodCan grow backTotal
2001under 1 haunder 1 haunder 1 ha
2002under 1 haunder 1 haunder 1 ha
2003under 1 haunder 1 haunder 1 ha
2004under 1 haunder 1 haunder 1 ha
2005under 1 haunder 1 haunder 1 ha
2006under 1 haunder 1 haunder 1 ha
2007under 1 haunder 1 haunder 1 ha
2008under 1 haunder 1 haunder 1 ha
2009under 1 haunder 1 haunder 1 ha
2010under 1 haunder 1 haunder 1 ha
2011under 1 haunder 1 haunder 1 ha
2012under 1 haunder 1 haunder 1 ha
2013under 1 haunder 1 haunder 1 ha
2014under 1 haunder 1 haunder 1 ha
201510 acres (4 ha)under 1 ha10 acres (4 ha)
2016under 1 haunder 1 haunder 1 ha
2017under 1 haunder 1 haunder 1 ha
2018under 1 haunder 1 haunder 1 ha
2019under 1 haunder 1 haunder 1 ha
2020under 1 haunder 1 haunder 1 ha
2021under 1 haunder 1 haunder 1 ha
2022under 1 haunder 1 haunder 1 ha
2023under 1 haunder 1 haunder 1 ha
2024under 1 haunder 1 haunder 1 ha
2025under 1 haunder 1 haunder 1 ha

What is causing deforestation around Compton?

  • Towns and roadscleared for good96% · 12 acres (5 ha)
  • Unknown causescause unknown6% · 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
474 acres (192 ha)
Forest in 2020
512 acres (207 ha)
Overall change
+37 acres (15 ha)more forest than in 2000

Comparing satellite maps from 2000 and 2020, the forest around Compton grew from about 474 acres (192 hectares) to 512 acres (207 hectares), a net gain of about 37 acres (15 hectares) (+7.8%). New forest grew on about 46 acres (19 hectares), while 9 acres (4 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 Compton

Same 2 km radius, same index — so they compare directly.

  • Torrance

    United States

    13.0 km
    Tree cover
    8%
    Air quality
    70
  • Inglewood

    United States

    14.3 km
    Tree cover
    11%
    Air quality
    49
  • Long Beach

    United States

    14.6 km
    Tree cover
    6%
    Air quality
    68
  • Los Angeles

    United States

    17.5 km
    Tree cover
    5%
    Air quality
    39
  • Hollywood

    United States

    24.6 km
    Tree cover
    17%
    Air quality
    31
  • El Monte

    United States

    26.1 km
    Tree cover
    9%
    Air quality
    44

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Compton air quality (AQI) and tree cover — measured by Airleaf
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Frequently asked

Questions about Compton

What is the air quality (AQI) in Compton right now?

The latest reading for Compton shows an AQI of 67 (Moderate), measured Nov 11, 08:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Compton, 0.9 mi (1.5 km) away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.

Is it safe to exercise outside in Compton today?

At AQI 67 (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 Compton been like this week?

Over the last 7 days, the CAMS air-quality model put Compton's daily AQI at 57 on average, from 46 on Nov 7 to an hourly peak of 83 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 Compton lost since 2001?

There was very little forest around Compton in 2000, about 64 acres (26 hectares), and about 12 acres (5 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 Compton grew from about 474 acres (192 hectares) to 512 acres (207 hectares), a net gain of about 37 acres (15 hectares) (+7.8%). New forest grew on about 46 acres (19 hectares), while 9 acres (4 hectares) were lost.

What is the tree count in Compton?

Compton has an estimated 22,305 trees across the 4.9 sq mi (12.57 km²) measured — 7.1% tree cover, 23 percentage points short of the 30% tree-cover target set for this area.

How many more trees does Compton need?

Compton needs roughly 71,942 more trees to close a 23-point shortfall against its 30% tree-cover target — about 1,583 t of extra CO₂ absorbed per year once grown.

How are Compton's air quality and tree cover measured?

Air quality is measured by ground monitoring stations near Compton, 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 Compton; the tree count is an estimate derived from that cover.

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