City report · Saxony, Germany
Chemnitz Air quality today
Air quality in Chemnitz currently reads AQI 12 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 12
Good
- PM2.5, fine particles (µg/m³)
- 2.2
- tree cover
- 40.5%
- trees in this area
- 127K
- more trees needed
- 0
Measured across a 2 km radius around Chemnitz-Zentrum, Chemnitz, Germany (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Chemnitz · AQI 12 (Good)
Chemnitz's tree count comes to 126,598 trees across 12.51 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Chemnitz today: AQI 12, Good
Main pollutant: PM2.5 · Observed Nov 11, 14:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Chemnitz-Leipziger Str., Germany, 5 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.2
PM10
8.6
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Air Quality, Saxon State Office (Luftqualität Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie), European Environment Agency
- 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 Chemnitz's daily AQI at 60 on average, from 44 on Nov 5 to an hourly peak of 80 on Nov 10.
Where Chemnitz stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chemnitz: Healthy tree cover
40.5% tree cover against a 30% healthy-neighborhood target, across 12.51 km² of land.
Trees in this area
126,598
Target trees
126,598
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Chemnitz lost?
Since 2001, the area within 10 km of Chemnitz has lost about 701 hectares of forest (about 980 football pitches): 8.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 36 hectares (5.1%) 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 east of the city center.
- Forest lost since 2001
- 701 haabout 980 football pitches
- Share of its forest
- 8.6%of what there was in 2000
- Cleared for good
- 36 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 66 hectares a year in 2021–2025, up from 45 hectares a year in 2016–2020. The worst year was 2021, when about 146 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 | 8 ha | 10 ha |
| 2002 | under 1 ha | 5 ha | 5 ha |
| 2003 | under 1 ha | 2 ha | 3 ha |
| 2004 | 2 ha | 11 ha | 13 ha |
| 2005 | under 1 ha | 2 ha | 3 ha |
| 2006 | under 1 ha | 11 ha | 12 ha |
| 2007 | 2 ha | 12 ha | 14 ha |
| 2008 | under 1 ha | 13 ha | 14 ha |
| 2009 | under 1 ha | 17 ha | 17 ha |
| 2010 | under 1 ha | 3 ha | 4 ha |
| 2011 | 2 ha | 11 ha | 14 ha |
| 2012 | under 1 ha | 6 ha | 6 ha |
| 2013 | 1 ha | 20 ha | 21 ha |
| 2014 | 1 ha | 10 ha | 11 ha |
| 2015 | under 1 ha | 3 ha | 4 ha |
| 2016 | 1 ha | 16 ha | 17 ha |
| 2017 | under 1 ha | 9 ha | 9 ha |
| 2018 | 1 ha | 18 ha | 19 ha |
| 2019 | 3 ha | 53 ha | 56 ha |
| 2020 | 4 ha | 119 ha | 123 ha |
| 2021 | 6 ha | 140 ha | 146 ha |
| 2022 | 2 ha | 86 ha | 88 ha |
| 2023 | 2 ha | 65 ha | 67 ha |
| 2024 | 2 ha | 19 ha | 21 ha |
| 2025 | under 1 ha | 7 ha | 7 ha |
What is causing deforestation around Chemnitz?
- Loggingcan grow back93% · 654 ha
- Towns and roadscleared for good5.1% · 36 ha
- Unknown causescause unknown1.5% · 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
- 12,200 ha
- Forest in 2020
- 12,400 ha
- Overall change
- +222 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chemnitz stayed about the same size, at about 12,400 hectares: new forest grew on about 366 hectares, and about 144 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 Chemnitz
What is the air quality (AQI) in Chemnitz right now?
The latest reading for Chemnitz shows an AQI of 12 (Good), measured Nov 11, 14:00 local time by the Chemnitz-Leipziger Str., Germany ground monitoring station, 5 km away, via OpenAQ. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Chemnitz today?
At AQI 12 (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 Chemnitz been like this week?
Over the last 7 days, the CAMS air-quality model put Chemnitz's daily AQI at 60 on average, from 44 on Nov 5 to an hourly peak of 80 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Chemnitz lost since 2001?
Since 2001, the area within 10 km of Chemnitz has lost about 701 hectares of forest (about 980 football pitches): 8.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 36 hectares (5.1%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 66 hectares a year in 2021–2025, up from 45 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Chemnitz stayed about the same size, at about 12,400 hectares: new forest grew on about 366 hectares, and about 144 hectares were lost.
What is the tree count in Chemnitz?
Chemnitz has an estimated 126,598 trees across the 12.51 km² of land measured — 40.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Chemnitz need?
Chemnitz has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Chemnitz's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Chemnitz-Zentrum, 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 Chemnitz-Zentrum; the tree count is an estimate derived from that cover.
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