City report · Western Australia, Australia
Perth Air quality today
Air quality in Perth currently reads AQI 25 (Good): Air quality is satisfactory for everyone.
AQI 25
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 4.5
- tree cover
- 18.1%
- trees in this area
- 46.1K
- more trees needed
- 30.3K
Measured across a 2 km radius around Perth WA 6000, Australia (12.57 km²), from a satellite image of Mar 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Perth · AQI 25 (Good)
Perth's tree count comes to 46,116 trees across 10.19 km² of land, 12 points below the 30% tree-cover level considered healthy for this area, so roughly 30,319 more trees would close the gap.
Air quality detail
Air quality in Perth today: AQI 25, Good
Main pollutant: PM2.5 · Observed Nov 11, 23:53 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · NASA GSFC Rutgers Calib. N5, 5.1 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
4.5
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · Clarity
- 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 Perth's daily AQI at 40 on average, from 27 on Nov 9 to an hourly peak of 56 on Nov 5.
Where Perth stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Perth: Below target
18.1% tree cover against a 30% healthy-neighborhood target, across 10.19 km² of land.
Trees in this area
46,116
Target trees
76,435
More trees needed
30,319
CO₂ if planted / yr
667.0 t
Deforestation · 2001–2025
How much forest has Perth lost?
Since 2001, the area within 10 km of Perth has lost about 78 hectares of forest (about 110 football pitches): 9.3% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 78 haabout 110 football pitches
- Share of its forest
- 9.3%of what there was in 2000
- Cleared for good
- 70 hadeforestation: turned into farms, mines or towns
The worst year was 2007, when about 10 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 1 ha | under 1 ha | 2 ha |
| 2002 | 1 ha | under 1 ha | 2 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | 1 ha | under 1 ha | 2 ha |
| 2006 | 9 ha | under 1 ha | 9 ha |
| 2007 | 10 ha | under 1 ha | 10 ha |
| 2008 | 2 ha | under 1 ha | 2 ha |
| 2009 | 3 ha | 2 ha | 5 ha |
| 2010 | 6 ha | under 1 ha | 7 ha |
| 2011 | 2 ha | under 1 ha | 2 ha |
| 2012 | 8 ha | under 1 ha | 9 ha |
| 2013 | 2 ha | under 1 ha | 2 ha |
| 2014 | 9 ha | under 1 ha | 9 ha |
| 2015 | 3 ha | under 1 ha | 3 ha |
| 2016 | 1 ha | under 1 ha | 1 ha |
| 2017 | 2 ha | under 1 ha | 2 ha |
| 2018 | 4 ha | under 1 ha | 4 ha |
| 2019 | 1 ha | under 1 ha | 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 1 ha | under 1 ha | 1 ha |
| 2024 | under 1 ha | under 1 ha | 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Perth?
- Towns and roadscleared for good90% · 70 ha
- Wildfirescan grow back4.2% · 3 ha
- Unknown causescause unknown5.9% · 5 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
- 754 ha
- Forest in 2020
- 1,030 ha
- Overall change
- +278 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Perth grew from about 754 hectares to 1,030 hectares, a net gain of about 278 hectares (+37%). New forest grew on about 287 hectares, while 9 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 Perth
Same 2 km radius, same index — so they compare directly.
- Mandurah65.2 km
Australia
- Tree cover
- 11%
- Air quality
- 17
- Kupang2549.6 km
Indonesia
- Tree cover
- 15%
- Air quality
- 62
- Denpasar2591.9 km
Indonesia
- Tree cover
- 13%
- Air quality
- 153
- Sukawati2596.8 km
Indonesia
- Tree cover
- 33%
- Air quality
- 130
- Mataram2598.6 km
Indonesia
- Tree cover
- 28%
- Air quality
- 81
Also compared:Perth vs SydneyPerth vs MelbournePerth vs CanberraPerth vs Brisbane
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Frequently asked
Questions about Perth
What is the air quality (AQI) in Perth right now?
The latest reading for Perth shows an AQI of 25 (Good), measured Nov 11, 23:53 local time by the NASA GSFC Rutgers Calib. N5 ground monitoring station, 5.1 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Perth 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 Perth been like this week?
Over the last 7 days, the CAMS air-quality model put Perth's daily AQI at 40 on average, from 27 on Nov 9 to an hourly peak of 56 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Perth lost since 2001?
Since 2001, the area within 10 km of Perth has lost about 78 hectares of forest (about 110 football pitches): 9.3% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Perth grew from about 754 hectares to 1,030 hectares, a net gain of about 278 hectares (+37%). New forest grew on about 287 hectares, while 9 hectares were lost.
What is the tree count in Perth?
Perth has an estimated 46,116 trees across the 10.19 km² of land measured — 18.1% tree cover, 12 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Perth need?
Perth needs roughly 30,319 more trees to close a 12-point shortfall against its 30% tree-cover target — about 667.0 t of extra CO₂ absorbed per year once grown.
How are Perth's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Perth WA 6000, 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 2 km radius around Perth WA 6000; the tree count is an estimate derived from that cover.
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