City report · Austria
Graz Air quality today
Air quality in Graz currently reads AQI 73 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 73
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 21.0
- tree cover
- 28.3%
- trees in this area
- 88.7K
- more trees needed
- 5.3K
Measured across a 2 km radius around Innere Stadt, 8010 Graz, Austria (12.57 km²), from a satellite image of Sep 8, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Graz · AQI 73 (Moderate)
Graz's tree count comes to 88,729 trees across 12.54 km² of land, 2 points below the 30% tree-cover level considered healthy for this area, so roughly 5,330 more trees would close the gap.
Air quality detail
Air quality in Graz today: AQI 73, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 17:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Graz Triester Straße, 2.2 km away · median of 8 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
21.0
PM10
29.1
NO₂
24.0
O₃
5.9
SO₂
1.1
CO
—
Data: OpenAQ · EEA
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Graz's daily AQI at 90 on average, from 76 on Nov 4 to an hourly peak of 148 on Nov 5.
Where Graz stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Graz: Below target
28.3% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
88,729
Target trees
94,059
More trees needed
5,330
CO₂ if planted / yr
117.3 t
Deforestation · 2001–2025
How much forest has Graz lost?
Since 2001, the area within 10 km of Graz has lost about 1,300 hectares of forest (about 1,800 football pitches): 9.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 193 hectares (15%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 1,300 haabout 1,800 football pitches
- Share of its forest
- 9.1%of what there was in 2000
- Cleared for good
- 193 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 73 hectares a year in 2021–2025, up from 37 hectares a year in 2016–2020. The worst year was 2024, when about 121 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 | 2 ha | 9 ha | 11 ha |
| 2002 | 3 ha | 38 ha | 41 ha |
| 2003 | 5 ha | 30 ha | 35 ha |
| 2004 | 14 ha | 67 ha | 81 ha |
| 2005 | 2 ha | 37 ha | 39 ha |
| 2006 | 7 ha | 71 ha | 78 ha |
| 2007 | 14 ha | 68 ha | 82 ha |
| 2008 | 20 ha | 73 ha | 93 ha |
| 2009 | 15 ha | 40 ha | 55 ha |
| 2010 | 18 ha | 71 ha | 88 ha |
| 2011 | 9 ha | 34 ha | 44 ha |
| 2012 | 7 ha | 30 ha | 37 ha |
| 2013 | 4 ha | 13 ha | 17 ha |
| 2014 | 7 ha | 24 ha | 31 ha |
| 2015 | 5 ha | 16 ha | 22 ha |
| 2016 | 11 ha | 40 ha | 51 ha |
| 2017 | 10 ha | 32 ha | 41 ha |
| 2018 | 6 ha | 19 ha | 25 ha |
| 2019 | 3 ha | 36 ha | 39 ha |
| 2020 | 3 ha | 27 ha | 30 ha |
| 2021 | 5 ha | 29 ha | 33 ha |
| 2022 | 2 ha | 28 ha | 29 ha |
| 2023 | 8 ha | 75 ha | 83 ha |
| 2024 | 5 ha | 116 ha | 121 ha |
| 2025 | 9 ha | 88 ha | 97 ha |
What is causing deforestation around Graz?
- Loggingcan grow back84% · 1,100 ha
- Towns and roadscleared for good12% · 151 ha
- Mining and energycleared for good3.2% · 42 ha
Also: 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
- 18,200 ha
- Forest in 2020
- 18,100 ha
- Overall change
- −77 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Graz stayed about the same size, at about 18,100 hectares: new forest grew on about 191 hectares, and about 268 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 Graz
Same 2 km radius, same index — so they compare directly.
- Maribor59.0 km
Slovenia
- Tree cover
- 27%
- Air quality
- 54
- Celje94.0 km
Slovenia
- Tree cover
- 44%
- Air quality
- 58
- Ljubljana133.8 km
Slovenia
- Tree cover
- 38%
- Air quality
- 53
- Novo Mesto142.0 km
Slovenia
- Tree cover
- 41%
- Air quality
- 53
Also compared:Graz vs LinzGraz vs Salzburg
Build your own
Compare Graz with anywhere
This place
Graz
Use this data
Put Graz's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Graz
What is the air quality (AQI) in Graz right now?
The latest reading for Graz shows an AQI of 73 (Moderate), measured Nov 11, 17:00 local time by 8 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Graz Triester Straße, 2.2 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Graz today?
At AQI 73 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Graz been like this week?
Over the last 7 days, the CAMS air-quality model put Graz's daily AQI at 90 on average, from 76 on Nov 4 to an hourly peak of 148 on Nov 5. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Graz lost since 2001?
Since 2001, the area within 10 km of Graz has lost about 1,300 hectares of forest (about 1,800 football pitches): 9.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 193 hectares (15%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 73 hectares a year in 2021–2025, up from 37 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Graz stayed about the same size, at about 18,100 hectares: new forest grew on about 191 hectares, and about 268 hectares were lost.
What is the tree count in Graz?
Graz has an estimated 88,729 trees across the 12.54 km² of land measured — 28.3% tree cover, 2 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Graz need?
Graz needs roughly 5,330 more trees to close a 2-point shortfall against its 30% tree-cover target — about 117.3 t of extra CO₂ absorbed per year once grown.
How are Graz's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Innere Stadt, 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 Innere Stadt; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address