City report · Austria
Linz Air quality today
Air quality in Linz currently reads AQI 60 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 60
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.8
- tree cover
- 37.1%
- trees in this area
- 108K
- more trees needed
- 0
Measured across a 2 km radius around Landstraße, 4020 Linz, Austria (12.57 km²), from a satellite image of Sep 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Linz · AQI 60 (Moderate)
Linz's tree count comes to 107,812 trees across 11.63 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Linz today: AQI 60, 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 · Linz Römerberg B139, 500 m away · median of 6 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.8
PM10
18.5
NO₂
20.7
O₃
24.4
SO₂
2.0
CO
233.6
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 Linz's daily AQI at 66 on average, from 48 on Nov 4 to an hourly peak of 125 on Nov 8.
Where Linz stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Linz: Healthy tree cover
37.1% tree cover against a 30% healthy-neighborhood target, across 11.63 km² of land.
Trees in this area
107,812
Target trees
107,812
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Linz lost?
Since 2001, the area within 10 km of Linz has lost about 1,250 hectares of forest (about 1,700 football pitches): 13% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 78 hectares (6.2%) was deforestation: forest cleared for good for farms, mines or towns.
2018: satellite photo from August 2018 of a 5 × 5 km area about 5 km west of the city center.
- Forest lost since 2001
- 1,250 haabout 1,700 football pitches
- Share of its forest
- 13%of what there was in 2000
- Cleared for good
- 78 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 22 hectares a year in 2021–2025, down from 169 hectares a year in 2016–2020. The worst year was 2018, when about 296 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 | under 1 ha | 2 ha | 3 ha |
| 2002 | 3 ha | 17 ha | 19 ha |
| 2003 | under 1 ha | 1 ha | 2 ha |
| 2004 | 4 ha | 24 ha | 28 ha |
| 2005 | 5 ha | 24 ha | 28 ha |
| 2006 | under 1 ha | 14 ha | 15 ha |
| 2007 | 2 ha | 33 ha | 35 ha |
| 2008 | under 1 ha | 7 ha | 8 ha |
| 2009 | 5 ha | 24 ha | 29 ha |
| 2010 | 4 ha | 18 ha | 22 ha |
| 2011 | 12 ha | 31 ha | 43 ha |
| 2012 | 2 ha | 17 ha | 19 ha |
| 2013 | 2 ha | 13 ha | 14 ha |
| 2014 | 1 ha | 17 ha | 18 ha |
| 2015 | under 1 ha | 12 ha | 13 ha |
| 2016 | 2 ha | 49 ha | 51 ha |
| 2017 | 3 ha | 104 ha | 107 ha |
| 2018 | 3 ha | 293 ha | 296 ha |
| 2019 | 3 ha | 203 ha | 206 ha |
| 2020 | 3 ha | 181 ha | 183 ha |
| 2021 | 2 ha | 27 ha | 28 ha |
| 2022 | 5 ha | 20 ha | 25 ha |
| 2023 | 6 ha | 14 ha | 19 ha |
| 2024 | 5 ha | 13 ha | 18 ha |
| 2025 | 6 ha | 16 ha | 21 ha |
What is causing deforestation around Linz?
- Loggingcan grow back93% · 1,160 ha
- Towns and roadscleared for good6.2% · 78 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
- 12,000 ha
- Forest in 2020
- 12,000 ha
- Overall change
- −31 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Linz stayed about the same size, at about 12,000 hectares: new forest grew on about 382 hectares, and about 412 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 Linz
Same 2 km radius, same index — so they compare directly.
- Pilsen173.4 km
Czechia
- Tree cover
- 28%
- Air quality
- 7
- Regensburg178.7 km
Germany
- Tree cover
- 29%
- Air quality
- 120
- Klagenfurt am Wörthersee187.0 km
Austria
- Tree cover
- 26%
- Air quality
- 53
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Frequently asked
Questions about Linz
What is the air quality (AQI) in Linz right now?
The latest reading for Linz shows an AQI of 60 (Moderate), measured Nov 11, 17:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Linz Römerberg B139, 500 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Linz today?
At AQI 60 (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 Linz been like this week?
Over the last 7 days, the CAMS air-quality model put Linz's daily AQI at 66 on average, from 48 on Nov 4 to an hourly peak of 125 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Linz lost since 2001?
Since 2001, the area within 10 km of Linz has lost about 1,250 hectares of forest (about 1,700 football pitches): 13% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 78 hectares (6.2%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 22 hectares a year in 2021–2025, down from 169 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Linz stayed about the same size, at about 12,000 hectares: new forest grew on about 382 hectares, and about 412 hectares were lost.
What is the tree count in Linz?
Linz has an estimated 107,812 trees across the 11.63 km² of land measured — 37.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Linz need?
Linz has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Linz's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Landstraße, 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 Landstraße; the tree count is an estimate derived from that cover.
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