City report · North Rhine-Westphalia, Germany
Bergisch Gladbach Air quality today
Air quality in Bergisch Gladbach currently reads AQI 51 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 51
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 9.3
- tree cover
- 59.9%
- trees in this area
- 188K
- more trees needed
- 0
Measured across a 2 km radius around Bergisch Gladbach, Germany (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bergisch Gladbach · AQI 51 (Moderate)
Bergisch Gladbach's tree count comes to 188,181 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Bergisch Gladbach today: AQI 51, 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 · Köln Clevischer Ring, 9.3 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.3
PM10
12.8
NO₂
41.0
O₃
—
SO₂
—
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 Bergisch Gladbach's daily AQI at 63 on average, from 37 on Nov 4 to an hourly peak of 84 on Nov 7.
Where Bergisch Gladbach stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bergisch Gladbach: Healthy tree cover
59.9% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
188,181
Target trees
188,181
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Bergisch Gladbach lost?
Since 2001, the area within 10 km of Bergisch Gladbach has lost about 2,720 hectares of forest (about 3,800 football pitches): 16% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 35 hectares (1.3%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 6 km north of the city center.
- Forest lost since 2001
- 2,720 haabout 3,800 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 35 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 119 hectares a year in 2021–2025, down from 290 hectares a year in 2016–2020. The worst year was 2020, when about 938 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 | 5 ha | 5 ha |
| 2002 | 3 ha | 19 ha | 22 ha |
| 2003 | under 1 ha | 8 ha | 9 ha |
| 2004 | 1 ha | 21 ha | 22 ha |
| 2005 | 2 ha | 31 ha | 34 ha |
| 2006 | 2 ha | 15 ha | 17 ha |
| 2007 | under 1 ha | 143 ha | 144 ha |
| 2008 | 3 ha | 95 ha | 98 ha |
| 2009 | 2 ha | 34 ha | 36 ha |
| 2010 | 3 ha | 160 ha | 163 ha |
| 2011 | 2 ha | 32 ha | 34 ha |
| 2012 | under 1 ha | 38 ha | 38 ha |
| 2013 | under 1 ha | 9 ha | 9 ha |
| 2014 | under 1 ha | 23 ha | 23 ha |
| 2015 | 3 ha | 18 ha | 21 ha |
| 2016 | 1 ha | 23 ha | 24 ha |
| 2017 | under 1 ha | 25 ha | 25 ha |
| 2018 | under 1 ha | 82 ha | 82 ha |
| 2019 | 3 ha | 380 ha | 383 ha |
| 2020 | 2 ha | 936 ha | 938 ha |
| 2021 | under 1 ha | 454 ha | 455 ha |
| 2022 | 3 ha | 75 ha | 79 ha |
| 2023 | under 1 ha | 38 ha | 39 ha |
| 2024 | under 1 ha | 15 ha | 15 ha |
| 2025 | under 1 ha | 8 ha | 8 ha |
What is causing deforestation around Bergisch Gladbach?
- Loggingcan grow back98% · 2,680 ha
- Towns and roadscleared for good1.3% · 35 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
- 21,400 ha
- Forest in 2020
- 20,900 ha
- Overall change
- −557 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Bergisch Gladbach shrank from about 21,400 hectares to 20,900 hectares, a net loss of about 557 hectares (−2.6%). New forest grew on about 281 hectares, but 838 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 Bergisch Gladbach
What is the air quality (AQI) in Bergisch Gladbach right now?
The latest reading for Bergisch Gladbach shows an AQI of 51 (Moderate), measured Nov 11, 17:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Köln Clevischer Ring, 9.3 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Bergisch Gladbach today?
At AQI 51 (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 Bergisch Gladbach been like this week?
Over the last 7 days, the CAMS air-quality model put Bergisch Gladbach's daily AQI at 63 on average, from 37 on Nov 4 to an hourly peak of 84 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 Bergisch Gladbach lost since 2001?
Since 2001, the area within 10 km of Bergisch Gladbach has lost about 2,720 hectares of forest (about 3,800 football pitches): 16% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 35 hectares (1.3%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 119 hectares a year in 2021–2025, down from 290 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Bergisch Gladbach shrank from about 21,400 hectares to 20,900 hectares, a net loss of about 557 hectares (−2.6%). New forest grew on about 281 hectares, but 838 hectares were lost.
What is the tree count in Bergisch Gladbach?
Bergisch Gladbach has an estimated 188,181 trees across the 12.57 km² measured — 59.9% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Bergisch Gladbach need?
Bergisch Gladbach has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Bergisch Gladbach's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Bergisch Gladbach, 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 Bergisch Gladbach; the tree count is an estimate derived from that cover.
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