City report · Germany
Hamburg Air quality today
Air quality in Hamburg 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)
- 20.7
- tree cover
- 21.2%
- trees in this area
- 51.7K
- more trees needed
- 21.5K
Measured across a 2 km radius around Altstadt, Hamburg-Mitte, Hamburg, Germany (12.57 km²), from a satellite image of Aug 14, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hamburg · AQI 73 (Moderate)
Hamburg's tree count comes to 51,683 trees across 9.75 km² of land, 9 points below the 30% tree-cover level considered healthy for this area, so roughly 21,453 more trees would close the gap.
Air quality detail
Air quality in Hamburg today: AQI 73, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Hamburg Sternschanze, 2.2 km away · median of 9 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
20.7
PM10
23.2
NO₂
27.3
O₃
34.4
SO₂
5.3
CO
274.0
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 Hamburg's daily AQI at 64 on average, from 36 on Nov 4 to an hourly peak of 94 on Nov 8.
Where Hamburg stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hamburg: Below target
21.2% tree cover against a 30% healthy-neighborhood target, across 9.75 km² of land.
Trees in this area
51,683
Target trees
73,136
More trees needed
21,453
CO₂ if planted / yr
472.0 t
Deforestation · 2001–2025
How much forest has Hamburg lost?
Since 2001, the area within 10 km of Hamburg has lost about 67 hectares of forest (about 94 football pitches): 1% of the forest it had in 2000. Most of it (75%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 67 haabout 94 football pitches
- Share of its forest
- 1%of what there was in 2000
- Cleared for good
- 51 hadeforestation: turned into farms, mines or towns
The worst year was 2019, when about 9 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 | under 1 ha | 3 ha |
| 2002 | 1 ha | under 1 ha | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 1 ha | under 1 ha | 2 ha |
| 2005 | 1 ha | under 1 ha | 2 ha |
| 2006 | 1 ha | 1 ha | 2 ha |
| 2007 | 1 ha | 1 ha | 2 ha |
| 2008 | 3 ha | 2 ha | 5 ha |
| 2009 | 2 ha | under 1 ha | 2 ha |
| 2010 | 3 ha | 2 ha | 6 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 2 ha | under 1 ha | 2 ha |
| 2013 | under 1 ha | 2 ha | 2 ha |
| 2014 | under 1 ha | under 1 ha | 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 7 ha | under 1 ha | 8 ha |
| 2017 | 2 ha | under 1 ha | 2 ha |
| 2018 | 3 ha | 1 ha | 4 ha |
| 2019 | 8 ha | under 1 ha | 9 ha |
| 2020 | under 1 ha | under 1 ha | 1 ha |
| 2021 | 4 ha | 1 ha | 5 ha |
| 2022 | 2 ha | under 1 ha | 2 ha |
| 2023 | 3 ha | under 1 ha | 3 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Hamburg?
- Towns and roadscleared for good74% · 50 ha
- Unknown causescause unknown25% · 17 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
- 3,670 ha
- Forest in 2020
- 3,690 ha
- Overall change
- +24 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hamburg stayed about the same size, at about 3,690 hectares: new forest grew on about 152 hectares, and about 127 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 Hamburg
Same 2 km radius, same index — so they compare directly.
- Lübeck57.8 km
Germany
- Tree cover
- 33%
- Air quality
- 54
- Kiel86.2 km
Germany
- Tree cover
- 35%
- Air quality
- 53
- Bremerhaven93.6 km
Germany
- Tree cover
- 25%
- Air quality
- 55
- Bremen94.8 km
Germany
- Tree cover
- 35%
- Air quality
- 63
- Oldenburg126.5 km
Germany
- Tree cover
- 43%
- Air quality
- 96
- Hannover132.4 km
Germany
- Tree cover
- 35%
- Air quality
- 81
Also compared:Hamburg vs BerlinHamburg vs MunichHamburg vs KölnHamburg vs Frankfurt am Main
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Frequently asked
Questions about Hamburg
What is the air quality (AQI) in Hamburg right now?
The latest reading for Hamburg shows an AQI of 73 (Moderate), measured Nov 11, 16:00 local time by 9 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Hamburg Sternschanze, 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 Hamburg 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 Hamburg been like this week?
Over the last 7 days, the CAMS air-quality model put Hamburg's daily AQI at 64 on average, from 36 on Nov 4 to an hourly peak of 94 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 Hamburg lost since 2001?
Since 2001, the area within 10 km of Hamburg has lost about 67 hectares of forest (about 94 football pitches): 1% of the forest it had in 2000. Most of it (75%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Hamburg stayed about the same size, at about 3,690 hectares: new forest grew on about 152 hectares, and about 127 hectares were lost.
What is the tree count in Hamburg?
Hamburg has an estimated 51,683 trees across the 9.75 km² of land measured — 21.2% tree cover, 9 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Hamburg need?
Hamburg needs roughly 21,453 more trees to close a 9-point shortfall against its 30% tree-cover target — about 472.0 t of extra CO₂ absorbed per year once grown.
How are Hamburg's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Altstadt, 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 Altstadt; the tree count is an estimate derived from that cover.
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