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City report · California, United States

Temecula Air quality today

Air quality in Temecula currently reads AQI 9 (Good): Air quality is satisfactory for everyone.

Air quality right now

AQI 9

Good

Main pollutant: PM2.5
PM2.5, fine particles (µg/m³)
1.6
tree cover
25.7%
trees in this area
80.7K
more trees needed
13.5K

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

Temecula · AQI 9 (Good)

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

Temecula's tree count comes to 80,658 trees across 4.8 sq mi (12.56 km²) of land, 4 points below the 30% tree-cover level considered healthy for this area, so roughly 13,495 more trees would close the gap.

Air quality detail

Air quality in Temecula today: AQI 9, 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 · Rancho Bella Vista, 6.0 mi (9.6 km) away

Health signal

Air quality is satisfactory for everyone.

PM2.5

1.6

PM10

—

NO₂

—

O₃

—

SO₂

—

CO

—

Data: OpenAQ · AirGradient

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 Temecula's daily AQI at 36 on average, from 26 on Nov 6 to an hourly peak of 82 on Nov 4.

Last 7 days · model estimateavg 36 · peak 82
Nov 4: AQI 58 (peak 82)Nov 5: AQI 35 (peak 62)Nov 6: AQI 26 (peak 54)Nov 7: AQI 32 (peak 55)Nov 8: AQI 35 (peak 58)Nov 9: AQI 31 (peak 56)Nov 10: AQI 33 (peak 55)
Nov 4Nov 10

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

Tree cover detail

Tree cover in Temecula: Below target

25.7% tree cover against a 30% healthy-neighborhood target, across 4.8 sq mi (12.56 km²) of land.

4 points below target

Trees in this area

80,658

Target trees

94,153

More trees needed

13,495

CO₂ if planted / yr

296.9 t

Deforestation · 2001–2025

How much forest has Temecula lost?

Since 2001, the area within 10 km of Temecula has lost about 2,610 acres (1,050 hectares) of forest (about 2,000 football fields): 36% of the forest it had in 2000. Most of it (81%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.

Satellite image of the area around Temecula, June 2017

2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km west of the city center.

Forest lost since 2001
2,610 acres (1,050 ha)about 2,000 football fields
Share of its forest
36%of what there was in 2000
Cleared for good
2,120 acres (858 ha)deforestation: turned into farms, mines or towns

The worst year was 2007, when about 420 acres (170 hectares) of forest were lost.

Forest lost each year around Temecula, 2001–2025

Acres of forest lost each year

Forest lost each year around Temecula, 2001–2025. Use the left and right arrow keys to read each year.420

Show the figures as a table
Forest lost each year around Temecula, 2001–2025
YearCleared for goodCan grow backTotal
200147 acres (19 ha)under 1 ha48 acres (19 ha)
200272 acres (29 ha)12 acres (5 ha)84 acres (34 ha)
200364 acres (26 ha)under 1 ha65 acres (26 ha)
2004136 acres (55 ha)224 acres (91 ha)361 acres (146 ha)
200543 acres (17 ha)under 1 ha43 acres (18 ha)
200689 acres (36 ha)75 acres (30 ha)163 acres (66 ha)
2007299 acres (121 ha)121 acres (49 ha)420 acres (170 ha)
2008141 acres (57 ha)33 acres (13 ha)174 acres (70 ha)
2009102 acres (41 ha)under 1 ha105 acres (42 ha)
2010274 acres (111 ha)2 acres (1 ha)277 acres (112 ha)
2011125 acres (51 ha)under 1 ha125 acres (51 ha)
201266 acres (27 ha)under 1 ha67 acres (27 ha)
201315 acres (6 ha)under 1 ha15 acres (6 ha)
201454 acres (22 ha)under 1 ha54 acres (22 ha)
201554 acres (22 ha)under 1 ha54 acres (22 ha)
2016161 acres (65 ha)8 acres (3 ha)170 acres (69 ha)
2017105 acres (42 ha)under 1 ha105 acres (43 ha)
201846 acres (19 ha)under 1 ha47 acres (19 ha)
201970 acres (28 ha)under 1 ha70 acres (28 ha)
202040 acres (16 ha)under 1 ha40 acres (16 ha)
202117 acres (7 ha)under 1 ha17 acres (7 ha)
202238 acres (15 ha)under 1 ha38 acres (15 ha)
202312 acres (5 ha)under 1 ha12 acres (5 ha)
202433 acres (14 ha)under 1 ha33 acres (14 ha)
202520 acres (8 ha)under 1 ha20 acres (8 ha)

What is causing deforestation around Temecula?

  • Farms, pasture and plantationscleared for good76% · 1,980 acres (800 ha)
  • Wildfirescan grow back18% · 477 acres (193 ha)
  • Towns and roadscleared for good5.4% · 141 acres (57 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
23,500 acres (9,520 ha)
Forest in 2020
22,800 acres (9,220 ha)
Overall change
−734 acres (297 ha)less forest than in 2000

Comparing satellite maps from 2000 and 2020, the forest around Temecula shrank from about 23,500 acres (9,520 hectares) to 22,800 acres (9,220 hectares), a net loss of about 734 acres (297 hectares) (−3.1%). New forest grew on about 929 acres (376 hectares), but 1,660 acres (673 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 Temecula

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

  • Vista

    United States

    33.8 km
    Tree cover
    14%
    Air quality
    39
  • Oceanside

    United States

    39.5 km
    Tree cover
    10%
    Air quality
    51
  • Escondido

    United States

    42.0 km
    Tree cover
    9%
    Air quality
    20
  • Moreno Valley

    United States

    49.9 km
    Tree cover
    6%
    Air quality
    25
  • Riverside

    United States

    56.0 km
    Tree cover
    22%
    Air quality
    38
  • Corona

    United States

    57.4 km
    Tree cover
    9%
    Air quality
    59

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

Questions about Temecula

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

The latest reading for Temecula shows an AQI of 9 (Good), measured Nov 11, 07:00 local time by the Rancho Bella Vista ground monitoring station, 6.0 mi (9.6 km) away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.

Is it safe to exercise outside in Temecula today?

At AQI 9 (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 Temecula been like this week?

Over the last 7 days, the CAMS air-quality model put Temecula's daily AQI at 36 on average, from 26 on Nov 6 to an hourly peak of 82 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 Temecula lost since 2001?

Since 2001, the area within 10 km of Temecula has lost about 2,610 acres (1,050 hectares) of forest (about 2,000 football fields): 36% of the forest it had in 2000. Most of it (81%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Temecula shrank from about 23,500 acres (9,520 hectares) to 22,800 acres (9,220 hectares), a net loss of about 734 acres (297 hectares) (−3.1%). New forest grew on about 929 acres (376 hectares), but 1,660 acres (673 hectares) were lost.

What is the tree count in Temecula?

Temecula has an estimated 80,658 trees across the 4.8 sq mi (12.56 km²) of land measured — 25.7% tree cover, 4 percentage points short of the 30% tree-cover target set for this area.

How many more trees does Temecula need?

Temecula needs roughly 13,495 more trees to close a 4-point shortfall against its 30% tree-cover target — about 296.9 t of extra CO₂ absorbed per year once grown.

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

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

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