City report · California, United States
Antioch Air quality today
Air quality in Antioch currently reads AQI 8 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 8
Good
- PM2.5, fine particles (µg/m³)
- 1.0
- tree cover
- 13.7%
- trees in this area
- 38.6K
- more trees needed
- 45.9K
Measured across a 1.2 mi (2 km) radius around Antioch, CA, USA (4.9 sq mi), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Antioch · AQI 8 (Good)
Antioch's tree count comes to 38,607 trees across 4.4 sq mi (11.28 km²) of land, 16 points below the 30% tree-cover level considered healthy for this area, so roughly 45,934 more trees would close the gap.
Air quality detail
Air quality in Antioch today: AQI 8, Good
Main pollutant: NO₂ · Observed Nov 11, 06:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Concord, 12.8 mi (20.6 km) away · median of 2 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
1.0
PM10
—
NO₂
15.4
O₃
8.8
SO₂
2.6
CO
401.0
Data: OpenAQ · AirNow
- 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 Antioch's daily AQI at 78 on average, from 49 on Nov 4 to an hourly peak of 117 on Nov 7.
Where Antioch stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Antioch: Critically low
13.7% tree cover against a 30% healthy-neighborhood target, across 4.4 sq mi (11.28 km²) of land.
Trees in this area
38,607
Target trees
84,541
More trees needed
45,934
CO₂ if planted / yr
1,011 t
Deforestation · 2001–2025
How much forest has Antioch lost?
Since 2001, the area within 10 km of Antioch has lost about 202 acres (82 hectares) of forest (about 150 football fields): 3.3% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 202 acres (82 ha)about 150 football fields
- Share of its forest
- 3.3%of what there was in 2000
- Cleared for good
- 114 acres (46 ha)deforestation: turned into farms, mines or towns
The worst year was 2002, when about 52 acres (21 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 | 7 acres (3 ha) | 26 acres (11 ha) | 33 acres (13 ha) |
| 2002 | 52 acres (21 ha) | under 1 ha | 52 acres (21 ha) |
| 2003 | under 1 ha | 8 acres (3 ha) | 9 acres (4 ha) |
| 2004 | 4 acres (2 ha) | under 1 ha | 5 acres (2 ha) |
| 2005 | 6 acres (2 ha) | 10 acres (4 ha) | 16 acres (6 ha) |
| 2006 | 19 acres (8 ha) | 17 acres (7 ha) | 36 acres (15 ha) |
| 2007 | 4 acres (2 ha) | under 1 ha | 6 acres (2 ha) |
| 2008 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2009 | 6 acres (3 ha) | 3 acres (1 ha) | 10 acres (4 ha) |
| 2010 | under 1 ha | under 1 ha | 3 acres (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 | 12 acres (5 ha) | 12 acres (5 ha) |
| 2014 | 3 acres (1 ha) | 3 acres (1 ha) | 6 acres (2 ha) |
| 2015 | 8 acres (3 ha) | under 1 ha | 9 acres (4 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 Antioch?
- Towns and roadscleared for good43% · 87 acres (35 ha)
- Storms, floods and other natural causescan grow back32% · 64 acres (26 ha)
- Farms, pasture and plantationscleared for good13% · 27 acres (11 ha)
Also: mining and energy, 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
- 3,060 acres (1,240 ha)
- Forest in 2020
- 3,430 acres (1,390 ha)
- Overall change
- +373 acres (151 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Antioch grew from about 3,060 acres (1,240 hectares) to 3,430 acres (1,390 hectares), a net gain of about 373 acres (151 hectares) (+12%). New forest grew on about 418 acres (169 hectares), while 46 acres (18 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 Antioch
Same 2 km radius, same index — so they compare directly.
- Concord20.0 km
United States
- Tree cover
- 22%
- Air quality
- 8
- Fairfield34.0 km
United States
- Tree cover
- 11%
- Air quality
- 8
- Vallejo41.0 km
United States
- Tree cover
- 14%
- Air quality
- 7
- Hayward44.5 km
United States
- Tree cover
- 20%
- Air quality
- 29
- Stockton45.4 km
United States
- Tree cover
- 16%
- Air quality
- 60
- Oakland46.5 km
United States
- Tree cover
- 7%
- Air quality
- 31
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Frequently asked
Questions about Antioch
What is the air quality (AQI) in Antioch right now?
The latest reading for Antioch shows an AQI of 8 (Good), measured Nov 11, 06:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Concord, 12.8 mi (20.6 km) away). The main pollutant is NO₂. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Antioch today?
At AQI 8 (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 Antioch been like this week?
Over the last 7 days, the CAMS air-quality model put Antioch's daily AQI at 78 on average, from 49 on Nov 4 to an hourly peak of 117 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 Antioch lost since 2001?
Since 2001, the area within 10 km of Antioch has lost about 202 acres (82 hectares) of forest (about 150 football fields): 3.3% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Antioch grew from about 3,060 acres (1,240 hectares) to 3,430 acres (1,390 hectares), a net gain of about 373 acres (151 hectares) (+12%). New forest grew on about 418 acres (169 hectares), while 46 acres (18 hectares) were lost.
What is the tree count in Antioch?
Antioch has an estimated 38,607 trees across the 4.4 sq mi (11.28 km²) of land measured — 13.7% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Antioch need?
Antioch needs roughly 45,934 more trees to close a 16-point shortfall against its 30% tree-cover target — about 1,011 t of extra CO₂ absorbed per year once grown.
How are Antioch's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Antioch, 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 Antioch; the tree count is an estimate derived from that cover.
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