City report · Slovakia
Košice Air quality today
Air quality in Košice currently reads AQI 79 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 79
Moderate
- PM2.5, fine particles (µg/m³)
- 23.9
- tree cover
- 20.2%
- trees in this area
- 63.5K
- more trees needed
- 30.8K
Measured across a 2 km radius around Košice-Juh, Slovakia (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Košice · AQI 79 (Moderate)
Košice's tree count comes to 63,460 trees across 12.57 km², 10 points below the 30% tree-cover level considered healthy for this area, so roughly 30,788 more trees would close the gap.
Air quality detail
Air quality in Košice today: AQI 79, 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 · "Kosice - Stefanikova", 1.3 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
23.9
PM10
37.3
NO₂
—
O₃
31.9
SO₂
19.1
CO
805.7
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 Košice's daily AQI at 62 on average, from 46 on Nov 4 to an hourly peak of 119 on Nov 9.
Where Košice stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Košice: Below target
20.2% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
63,460
Target trees
94,248
More trees needed
30,788
CO₂ if planted / yr
677.3 t
Deforestation · 2001–2025
How much forest has Košice lost?
Since 2001, the area within 10 km of Košice has lost about 385 hectares of forest (about 540 football pitches): 3.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 31 hectares (8.1%) 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
- 385 haabout 540 football pitches
- Share of its forest
- 3.6%of what there was in 2000
- Cleared for good
- 31 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 34 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 | 9 ha | 9 ha |
| 2002 | under 1 ha | 3 ha | 3 ha |
| 2003 | under 1 ha | 2 ha | 2 ha |
| 2004 | under 1 ha | 4 ha | 5 ha |
| 2005 | 1 ha | 13 ha | 14 ha |
| 2006 | 2 ha | 19 ha | 22 ha |
| 2007 | under 1 ha | 21 ha | 21 ha |
| 2008 | under 1 ha | 13 ha | 13 ha |
| 2009 | under 1 ha | 9 ha | 10 ha |
| 2010 | 1 ha | 24 ha | 26 ha |
| 2011 | under 1 ha | 10 ha | 10 ha |
| 2012 | under 1 ha | 8 ha | 8 ha |
| 2013 | 4 ha | 4 ha | 8 ha |
| 2014 | 1 ha | 30 ha | 31 ha |
| 2015 | under 1 ha | 10 ha | 10 ha |
| 2016 | 1 ha | 22 ha | 23 ha |
| 2017 | 4 ha | 30 ha | 34 ha |
| 2018 | 3 ha | 22 ha | 25 ha |
| 2019 | under 1 ha | 28 ha | 28 ha |
| 2020 | under 1 ha | 8 ha | 8 ha |
| 2021 | under 1 ha | 13 ha | 13 ha |
| 2022 | 3 ha | 12 ha | 15 ha |
| 2023 | 4 ha | 21 ha | 25 ha |
| 2024 | 2 ha | 9 ha | 11 ha |
| 2025 | under 1 ha | 10 ha | 11 ha |
What is causing deforestation around Košice?
- Loggingcan grow back89% · 343 ha
- Towns and roadscleared for good5.6% · 22 ha
- Mining and energycleared for good2.3% · 9 ha
Also: farms, pasture and plantations, 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
- 12,300 ha
- Forest in 2020
- 12,500 ha
- Overall change
- +183 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Košice stayed about the same size, at about 12,500 hectares: new forest grew on about 268 hectares, and about 85 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 Košice
Same 2 km radius, same index — so they compare directly.
- Miskolc76.6 km
Hungary
- Tree cover
- 39%
- Air quality
- 79
- Uzhhorod76.8 km
Ukraine
- Tree cover
- 43%
- Air quality
- 70
- Nyíregyháza91.0 km
Hungary
- Tree cover
- 28%
- Air quality
- 87
- Debrecen134.3 km
Hungary
- Tree cover
- 30%
- Air quality
- 104
- Tarnów145.8 km
Poland
- Tree cover
- 38%
- Air quality
- 39
Also compared:Košice vs BratislavaKošice vs Nitra
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Frequently asked
Questions about Košice
What is the air quality (AQI) in Košice right now?
The latest reading for Košice shows an AQI of 79 (Moderate), measured Nov 11, 16:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is "Kosice - Stefanikova", 1.3 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Košice today?
At AQI 79 (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 Košice been like this week?
Over the last 7 days, the CAMS air-quality model put Košice's daily AQI at 62 on average, from 46 on Nov 4 to an hourly peak of 119 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Košice lost since 2001?
Since 2001, the area within 10 km of Košice has lost about 385 hectares of forest (about 540 football pitches): 3.6% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 31 hectares (8.1%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Košice stayed about the same size, at about 12,500 hectares: new forest grew on about 268 hectares, and about 85 hectares were lost.
What is the tree count in Košice?
Košice has an estimated 63,460 trees across the 12.57 km² measured — 20.2% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Košice need?
Košice needs roughly 30,788 more trees to close a 10-point shortfall against its 30% tree-cover target — about 677.3 t of extra CO₂ absorbed per year once grown.
How are Košice's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Košice-Juh, 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 Košice-Juh; the tree count is an estimate derived from that cover.
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