City report · California, United States
Moreno Valley Air quality today
Air quality in Moreno Valley currently reads AQI 25 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 25
Good
- PM2.5, fine particles (µg/m³)
- 4.5
- tree cover
- 6.3%
- trees in this area
- 19.8K
- more trees needed
- 74.5K
Measured across a 1.2 mi (2 km) radius around Moreno Valley, 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.
Moreno Valley · AQI 25 (Good)
Moreno Valley's tree count comes to 19,792 trees across 4.9 sq mi (12.57 km²), 24 points below the 30% tree-cover level considered healthy for this area, so roughly 74,456 more trees would close the gap.
Air quality detail
Air quality in Moreno Valley today: AQI 25, Good
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Moreno Valley, 4.2 mi (6.8 km) away · median of 3 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.5
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Clarity, KM6NUK
- 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 Moreno Valley's daily AQI at 39 on average, from 31 on Nov 6 to an hourly peak of 89 on Nov 4.
Where Moreno Valley stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Moreno Valley: Critically low
6.3% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
19,792
Target trees
94,248
More trees needed
74,456
CO₂ if planted / yr
1,638 t
Deforestation · 2001–2025
How much forest has Moreno Valley lost?
There was very little forest around Moreno Valley in 2000, about 171 acres (69 hectares), and about 147 acres (60 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 June 2017 of a 5 × 5 km area in the city center.
The worst year was 2002, when about 45 acres (18 hectares) of forest were lost, mostly to wildfires.
Acres of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 2 acres (1 ha) | under 1 ha | 3 acres (1 ha) |
| 2002 | under 1 ha | 44 acres (18 ha) | 45 acres (18 ha) |
| 2003 | under 1 ha | 37 acres (15 ha) | 37 acres (15 ha) |
| 2004 | 12 acres (5 ha) | 9 acres (4 ha) | 21 acres (9 ha) |
| 2005 | 3 acres (1 ha) | 22 acres (9 ha) | 25 acres (10 ha) |
| 2006 | 5 acres (2 ha) | under 1 ha | 5 acres (2 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 | 3 acres (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 | 3 acres (1 ha) | under 1 ha | 3 acres (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 Moreno Valley?
- Wildfirescan grow back77% · 114 acres (46 ha)
- Towns and roadscleared for good20% · 29 acres (12 ha)
- Farms, pasture and plantationscleared for good1.3% · under 1 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
- 2,010 acres (813 ha)
- Forest in 2020
- 2,020 acres (817 ha)
- Overall change
- +10 acres (4 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Moreno Valley stayed about the same size, at about 2,020 acres (817 hectares): new forest grew on about 117 acres (47 hectares), and about 106 acres (43 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 Moreno Valley
Same 2 km radius, same index — so they compare directly.
- Riverside15.4 km
United States
- Tree cover
- 22%
- Air quality
- 38
- San Bernardino19.8 km
United States
- Tree cover
- 6%
- Air quality
- 35
- Fontana25.5 km
United States
- Tree cover
- 8%
- Air quality
- 29
- Corona31.8 km
United States
- Tree cover
- 9%
- Air quality
- 59
- Rancho Cucamonga38.3 km
United States
- Tree cover
- 13%
- Air quality
- 37
- Murrieta42.7 km
United States
- Tree cover
- 14%
- Air quality
- 23
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Frequently asked
Questions about Moreno Valley
What is the air quality (AQI) in Moreno Valley right now?
The latest reading for Moreno Valley shows an AQI of 25 (Good), measured Nov 11, 07:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Moreno Valley, 4.2 mi (6.8 km) away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Moreno Valley today?
At AQI 25 (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 Moreno Valley been like this week?
Over the last 7 days, the CAMS air-quality model put Moreno Valley's daily AQI at 39 on average, from 31 on Nov 6 to an hourly peak of 89 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 Moreno Valley lost since 2001?
There was very little forest around Moreno Valley in 2000, about 171 acres (69 hectares), and about 147 acres (60 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 Moreno Valley stayed about the same size, at about 2,020 acres (817 hectares): new forest grew on about 117 acres (47 hectares), and about 106 acres (43 hectares) were lost.
What is the tree count in Moreno Valley?
Moreno Valley has an estimated 19,792 trees across the 4.9 sq mi (12.57 km²) measured — 6.3% tree cover, 24 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Moreno Valley need?
Moreno Valley needs roughly 74,456 more trees to close a 24-point shortfall against its 30% tree-cover target — about 1,638 t of extra CO₂ absorbed per year once grown.
How are Moreno Valley's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Moreno Valley, 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 Moreno Valley; the tree count is an estimate derived from that cover.
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