City report · Baden-Wurttemberg, Germany
Heilbronn Air quality today
Air quality in Heilbronn currently reads AQI 80 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 80
Moderate
- PM2.5, fine particles (µg/m³)
- 24.7
- tree cover
- 32.7%
- trees in this area
- 99.8K
- more trees needed
- 0
Measured across a 2 km radius around Heilbronn, Germany (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Heilbronn · AQI 80 (Moderate)
Heilbronn's tree count comes to 99,751 trees across 12.21 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Heilbronn today: AQI 80, 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 · Bissingen Nord, 23 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
24.7
PM10
—
NO₂
—
O₃
—
SO₂
—
CO
—
Data: OpenAQ · AirGradient, Hack8
- 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 Heilbronn's daily AQI at 67 on average, from 47 on Nov 4 to an hourly peak of 89 on Nov 7.
Where Heilbronn stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Heilbronn: Healthy tree cover
32.7% tree cover against a 30% healthy-neighborhood target, across 12.21 km² of land.
Trees in this area
99,751
Target trees
99,751
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Heilbronn lost?
Since 2001, the area within 10 km of Heilbronn has lost about 179 hectares of forest (about 250 football pitches): 3.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 10 hectares (5.5%) 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
- 179 haabout 250 football pitches
- Share of its forest
- 3.1%of what there was in 2000
- Cleared for good
- 10 hadeforestation: turned into farms, mines or towns
The worst year was 2019, when about 21 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 | 19 ha | 20 ha |
| 2002 | under 1 ha | 2 ha | 2 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | 17 ha | 17 ha |
| 2005 | under 1 ha | 7 ha | 7 ha |
| 2006 | 1 ha | 3 ha | 4 ha |
| 2007 | under 1 ha | 4 ha | 4 ha |
| 2008 | under 1 ha | 6 ha | 6 ha |
| 2009 | under 1 ha | 3 ha | 4 ha |
| 2010 | under 1 ha | 5 ha | 5 ha |
| 2011 | under 1 ha | 4 ha | 4 ha |
| 2012 | under 1 ha | 2 ha | 3 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | 1 ha | 1 ha |
| 2015 | under 1 ha | 1 ha | 1 ha |
| 2016 | under 1 ha | 1 ha | 1 ha |
| 2017 | under 1 ha | 2 ha | 2 ha |
| 2018 | under 1 ha | 6 ha | 6 ha |
| 2019 | under 1 ha | 20 ha | 21 ha |
| 2020 | under 1 ha | 17 ha | 17 ha |
| 2021 | under 1 ha | 6 ha | 7 ha |
| 2022 | under 1 ha | 5 ha | 6 ha |
| 2023 | under 1 ha | 11 ha | 11 ha |
| 2024 | under 1 ha | 18 ha | 19 ha |
| 2025 | under 1 ha | 10 ha | 11 ha |
What is causing deforestation around Heilbronn?
- Loggingcan grow back89% · 160 ha
- Towns and roadscleared for good5.1% · 9 ha
- Unknown causescause unknown5.8% · 10 ha
Also: farms, pasture and plantations.
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
- 8,780 ha
- Forest in 2020
- 8,950 ha
- Overall change
- +170 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Heilbronn stayed about the same size, at about 8,950 hectares: new forest grew on about 218 hectares, and about 49 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 Heilbronn
Same 2 km radius, same index — so they compare directly.
- Stuttgart39.9 km
Germany
- Tree cover
- 41%
- Air quality
- 81
- Pforzheim47.5 km
Germany
- Tree cover
- 48%
- Air quality
- 60
- Heidelberg48.6 km
Germany
- Tree cover
- 54%
- Air quality
- 93
- Karlsruhe61.2 km
Germany
- Tree cover
- 42%
- Air quality
- 79
- Mannheim67.0 km
Germany
- Tree cover
- 22%
- Air quality
- 64
- Reutlingen72.1 km
Germany
- Tree cover
- 38%
- Air quality
- 19
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Frequently asked
Questions about Heilbronn
What is the air quality (AQI) in Heilbronn right now?
The latest reading for Heilbronn shows an AQI of 80 (Moderate), measured Nov 11, 17:00 local time by the Bissingen Nord ground monitoring station, 23 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Heilbronn today?
At AQI 80 (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 Heilbronn been like this week?
Over the last 7 days, the CAMS air-quality model put Heilbronn's daily AQI at 67 on average, from 47 on Nov 4 to an hourly peak of 89 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 Heilbronn lost since 2001?
Since 2001, the area within 10 km of Heilbronn has lost about 179 hectares of forest (about 250 football pitches): 3.1% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 10 hectares (5.5%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Heilbronn stayed about the same size, at about 8,950 hectares: new forest grew on about 218 hectares, and about 49 hectares were lost.
What is the tree count in Heilbronn?
Heilbronn has an estimated 99,751 trees across the 12.21 km² of land measured — 32.7% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Heilbronn need?
Heilbronn has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Heilbronn's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Heilbronn, 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 Heilbronn; the tree count is an estimate derived from that cover.
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