City report · Illinois, United States
Peoria Air quality today
Air quality in Peoria currently reads AQI 49 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 49
Good
- PM2.5, fine particles (µg/m³)
- 8.8
- tree cover
- 31.3%
- trees in this area
- 79.5K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Peoria, IL, USA (4.9 sq mi), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Peoria · AQI 49 (Good)
Peoria's tree count comes to 79,452 trees across 3.9 sq mi (10.16 km²) of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Peoria today: AQI 49, Good
Main pollutant: PM2.5 · Observed Nov 11, 08:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · PEORIA_J, 0.3 mi (500 m) away
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.8
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
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 Peoria's daily AQI at 29 on average, from 13 on Nov 6 to an hourly peak of 69 on Nov 11.
Where Peoria stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Peoria: Healthy tree cover
31.3% tree cover against a 30% healthy-neighborhood target, across 3.9 sq mi (10.16 km²) of land.
Trees in this area
79,452
Target trees
79,452
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Peoria lost?
Since 2001, the area within 10 km of Peoria has lost about 176 acres (71 hectares) of forest (about 130 football fields): under 1% of the forest it had in 2000. Most of it (69%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 176 acres (71 ha)about 130 football fields
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 122 acres (49 ha)deforestation: turned into farms, mines or towns
The worst year was 2022, when about 42 acres (17 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 | 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 | under 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 | 14 acres (6 ha) | 3 acres (1 ha) | 17 acres (7 ha) |
| 2014 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | 3 acres (1 ha) | 5 acres (2 ha) |
| 2017 | 22 acres (9 ha) | under 1 ha | 22 acres (9 ha) |
| 2018 | 7 acres (3 ha) | under 1 ha | 8 acres (3 ha) |
| 2019 | 7 acres (3 ha) | 4 acres (2 ha) | 11 acres (5 ha) |
| 2020 | 12 acres (5 ha) | 4 acres (2 ha) | 16 acres (6 ha) |
| 2021 | 7 acres (3 ha) | under 1 ha | 8 acres (3 ha) |
| 2022 | 31 acres (13 ha) | 11 acres (4 ha) | 42 acres (17 ha) |
| 2023 | 6 acres (2 ha) | 4 acres (2 ha) | 10 acres (4 ha) |
| 2024 | 4 acres (2 ha) | under 1 ha | 4 acres (2 ha) |
| 2025 | 3 acres (1 ha) | 16 acres (7 ha) | 19 acres (8 ha) |
What is causing deforestation around Peoria?
- Towns and roadscleared for good54% · 94 acres (38 ha)
- Loggingcan grow back15% · 27 acres (11 ha)
- Farms, pasture and plantationscleared for good10% · 18 acres (7 ha)
Also: mining and energy, 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
- 30,100 acres (12,200 ha)
- Forest in 2020
- 30,500 acres (12,300 ha)
- Overall change
- +378 acres (153 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Peoria stayed about the same size, at about 30,500 acres (12,300 hectares): new forest grew on about 786 acres (318 hectares), and about 408 acres (165 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 Peoria
Same 2 km radius, same index — so they compare directly.
- Springfield99.3 km
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- Tree cover
- 33%
- Air quality
- 56
- Davenport124.0 km
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- Tree cover
- 29%
- Air quality
- 44
- Joliet156.4 km
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- Tree cover
- 36%
- Air quality
- 70
- Aurora159.2 km
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- Tree cover
- 39%
- Air quality
- 74
- Naperville171.1 km
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- Tree cover
- 51%
- Air quality
- 74
- Rockford180.2 km
United States
- Tree cover
- 40%
- Air quality
- 79
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Frequently asked
Questions about Peoria
What is the air quality (AQI) in Peoria right now?
The latest reading for Peoria shows an AQI of 49 (Good), measured Nov 11, 08:00 local time by the PEORIA_J ground monitoring station, 0.3 mi (500 m) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Peoria today?
At AQI 49 (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 Peoria been like this week?
Over the last 7 days, the CAMS air-quality model put Peoria's daily AQI at 29 on average, from 13 on Nov 6 to an hourly peak of 69 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Peoria lost since 2001?
Since 2001, the area within 10 km of Peoria has lost about 176 acres (71 hectares) of forest (about 130 football fields): under 1% of the forest it had in 2000. Most of it (69%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Peoria stayed about the same size, at about 30,500 acres (12,300 hectares): new forest grew on about 786 acres (318 hectares), and about 408 acres (165 hectares) were lost.
What is the tree count in Peoria?
Peoria has an estimated 79,452 trees across the 3.9 sq mi (10.16 km²) of land measured — 31.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Peoria need?
Peoria has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Peoria's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Peoria, 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 Peoria; the tree count is an estimate derived from that cover.
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