City report · North Rhine-Westphalia, Germany
Hagen Air quality today
Air quality in Hagen currently reads AQI 46 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 46
Good
- PM2.5, fine particles (µg/m³)
- 8.3
- tree cover
- 51.2%
- trees in this area
- 161K
- more trees needed
- 0
Measured across a 2 km radius around Hagen-Mitte, Hagen, Germany (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hagen · AQI 46 (Good)
Hagen's tree count comes to 160,689 trees across 12.56 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Hagen today: AQI 46, Good
Main pollutant: PM2.5 · Observed Nov 11, 16:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Hagen Graf-von-Galen-Ring, 600 m away
Health signal
Air quality is satisfactory for everyone.
PM2.5
8.3
PM10
—
NO₂
39.2
O₃
—
SO₂
—
CO
—
Data: OpenAQ · EEA
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Hagen's daily AQI at 63 on average, from 43 on Nov 4 to an hourly peak of 83 on Nov 8.
Where Hagen stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hagen: Healthy tree cover
51.2% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
160,689
Target trees
160,689
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Hagen lost?
Since 2001, the area within 10 km of Hagen has lost about 3,940 hectares of forest (about 5,500 football pitches): 23% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 59 hectares (1.5%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 3,940 haabout 5,500 football pitches
- Share of its forest
- 23%of what there was in 2000
- Cleared for good
- 59 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 209 hectares a year in 2021–2025, against 258 hectares a year in 2016–2020. The worst year was 2021, when about 916 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 | 3 ha | 12 ha | 15 ha |
| 2002 | 1 ha | 14 ha | 15 ha |
| 2003 | under 1 ha | 3 ha | 3 ha |
| 2004 | 2 ha | 24 ha | 26 ha |
| 2005 | 2 ha | 31 ha | 33 ha |
| 2006 | 3 ha | 22 ha | 25 ha |
| 2007 | 1 ha | 622 ha | 623 ha |
| 2008 | 4 ha | 295 ha | 298 ha |
| 2009 | under 1 ha | 41 ha | 41 ha |
| 2010 | 5 ha | 390 ha | 395 ha |
| 2011 | under 1 ha | 36 ha | 36 ha |
| 2012 | 1 ha | 35 ha | 37 ha |
| 2013 | under 1 ha | 21 ha | 21 ha |
| 2014 | under 1 ha | 16 ha | 16 ha |
| 2015 | under 1 ha | 23 ha | 23 ha |
| 2016 | 3 ha | 23 ha | 26 ha |
| 2017 | 1 ha | 16 ha | 17 ha |
| 2018 | under 1 ha | 62 ha | 62 ha |
| 2019 | 10 ha | 306 ha | 316 ha |
| 2020 | 11 ha | 860 ha | 871 ha |
| 2021 | 5 ha | 911 ha | 916 ha |
| 2022 | under 1 ha | 66 ha | 66 ha |
| 2023 | 2 ha | 38 ha | 40 ha |
| 2024 | 3 ha | 14 ha | 16 ha |
| 2025 | under 1 ha | 4 ha | 5 ha |
What is causing deforestation around Hagen?
- Loggingcan grow back98% · 3,870 ha
- Towns and roadscleared for good1.4% · 55 ha
Also: mining and energy, 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
- 21,100 ha
- Forest in 2020
- 20,700 ha
- Overall change
- −454 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hagen shrank from about 21,100 hectares to 20,700 hectares, a net loss of about 454 hectares (−2.1%). New forest grew on about 352 hectares, but 805 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 Hagen
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Hagen with anywhere
This place
Hagen
Use this data
Put Hagen's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Hagen
What is the air quality (AQI) in Hagen right now?
The latest reading for Hagen shows an AQI of 46 (Good), measured Nov 11, 16:00 local time by the Hagen Graf-von-Galen-Ring ground monitoring station, 600 m away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Hagen today?
At AQI 46 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Hagen been like this week?
Over the last 7 days, the CAMS air-quality model put Hagen's daily AQI at 63 on average, from 43 on Nov 4 to an hourly peak of 83 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 Hagen lost since 2001?
Since 2001, the area within 10 km of Hagen has lost about 3,940 hectares of forest (about 5,500 football pitches): 23% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 59 hectares (1.5%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss has stayed about the same: about 209 hectares a year in 2021–2025, against 258 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Hagen shrank from about 21,100 hectares to 20,700 hectares, a net loss of about 454 hectares (−2.1%). New forest grew on about 352 hectares, but 805 hectares were lost.
What is the tree count in Hagen?
Hagen has an estimated 160,689 trees across the 12.56 km² of land measured — 51.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hagen need?
Hagen has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Hagen's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Hagen-Mitte, 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 Hagen-Mitte; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address