City report · Bavaria, Germany
Regensburg Air quality today
Air quality in Regensburg currently reads AQI 120 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 120
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 43.3
- tree cover
- 29.4%
- trees in this area
- 89.2K
- more trees needed
- 17.0K
Measured across a 2 km radius around Regensburg, Germany (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Regensburg · AQI 120 (Unhealthy for sensitive groups)
Regensburg's tree count comes to 89,222 trees across 12.14 km² of land, 6 points below the 35% tree-cover level considered healthy for this area, so roughly 16,995 more trees would close the gap.
Air quality detail
Air quality in Regensburg today: AQI 120, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 18:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Regenstauf Brahmsstraße, 13.1 km away · median of 3 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
43.3
PM10
10.2
NO₂
20.8
O₃
5.4
SO₂
—
CO
330.0
Data: OpenAQ · AirGradient, EEA, Laplacian42
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Regensburg's daily AQI at 62 on average, from 46 on Nov 4 to an hourly peak of 75 on Nov 7.
Where Regensburg stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Regensburg: Below target
29.4% tree cover against a 35% healthy-neighborhood target, across 12.14 km² of land.
Trees in this area
89,222
Target trees
106,217
More trees needed
16,995
CO₂ if planted / yr
373.9 t
Deforestation · 2001–2025
How much forest has Regensburg lost?
Since 2001, the area within 10 km of Regensburg has lost about 859 hectares of forest (about 1,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 7 hectares (under 1%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 859 haabout 1,200 football pitches
- Share of its forest
- 11%of what there was in 2000
- Cleared for good
- 7 hadeforestation: turned into farms, mines or towns
The worst year was 2007, when about 140 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 | 4 ha | 4 ha |
| 2002 | under 1 ha | 16 ha | 17 ha |
| 2003 | under 1 ha | 2 ha | 2 ha |
| 2004 | 1 ha | 126 ha | 127 ha |
| 2005 | under 1 ha | 57 ha | 57 ha |
| 2006 | under 1 ha | 54 ha | 54 ha |
| 2007 | under 1 ha | 140 ha | 140 ha |
| 2008 | 1 ha | 112 ha | 113 ha |
| 2009 | under 1 ha | 31 ha | 31 ha |
| 2010 | under 1 ha | 21 ha | 21 ha |
| 2011 | under 1 ha | 21 ha | 22 ha |
| 2012 | 1 ha | 17 ha | 18 ha |
| 2013 | under 1 ha | 5 ha | 6 ha |
| 2014 | 2 ha | 11 ha | 13 ha |
| 2015 | under 1 ha | 6 ha | 6 ha |
| 2016 | under 1 ha | 18 ha | 18 ha |
| 2017 | under 1 ha | 24 ha | 24 ha |
| 2018 | under 1 ha | 16 ha | 16 ha |
| 2019 | under 1 ha | 28 ha | 28 ha |
| 2020 | under 1 ha | 18 ha | 18 ha |
| 2021 | under 1 ha | 13 ha | 13 ha |
| 2022 | under 1 ha | 15 ha | 16 ha |
| 2023 | under 1 ha | 25 ha | 25 ha |
| 2024 | under 1 ha | 40 ha | 40 ha |
| 2025 | under 1 ha | 34 ha | 34 ha |
What is causing deforestation around Regensburg?
- Loggingcan grow back98% · 838 ha
- Unknown causescause unknown1.5% · 13 ha
Also: towns and roads.
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
- 9,270 ha
- Forest in 2020
- 9,380 ha
- Overall change
- +106 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Regensburg stayed about the same size, at about 9,380 hectares: new forest grew on about 183 hectares, and about 77 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
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Frequently asked
Questions about Regensburg
What is the air quality (AQI) in Regensburg right now?
The latest reading for Regensburg shows an AQI of 120 (Unhealthy for sensitive groups), measured Nov 11, 18:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Regenstauf Brahmsstraße, 13.1 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Regensburg today?
At AQI 120 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Regensburg been like this week?
Over the last 7 days, the CAMS air-quality model put Regensburg's daily AQI at 62 on average, from 46 on Nov 4 to an hourly peak of 75 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Regensburg lost since 2001?
Since 2001, the area within 10 km of Regensburg has lost about 859 hectares of forest (about 1,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 7 hectares (under 1%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Regensburg stayed about the same size, at about 9,380 hectares: new forest grew on about 183 hectares, and about 77 hectares were lost.
What is the tree count in Regensburg?
Regensburg has an estimated 89,222 trees across the 12.14 km² of land measured — 29.4% tree cover, 6 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Regensburg need?
Regensburg needs roughly 16,995 more trees to close a 6-point shortfall against its 35% tree-cover target — about 373.9 t of extra CO₂ absorbed per year once grown.
How are Regensburg's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Regensburg, 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 Regensburg; the tree count is an estimate derived from that cover.
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