City report · West Pomerania, Poland
Koszalin Air quality today
Air quality in Koszalin currently reads AQI 69 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 69
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 19.0
- tree cover
- 31.1%
- trees in this area
- 97.7K
- more trees needed
- 0
Measured across a 2 km radius around Koszalin, Poland (12.57 km²), from a satellite image of Aug 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Koszalin · AQI 69 (Moderate)
Koszalin's tree count comes to 97,704 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 Koszalin today: AQI 69, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 225 km, e.g. Gdańsk and Gorzów Wielkopolski
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
19.0
PM10
23.9
NO₂
7.7
O₃
33.0
SO₂
2.4
CO
230.0
- 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 Koszalin's daily AQI at 72 on average, from 44 on Nov 6 to an hourly peak of 126 on Nov 8.
Where Koszalin stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Koszalin: Healthy tree cover
31.1% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
97,704
Target trees
97,704
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Koszalin lost?
Since 2001, the area within 10 km of Koszalin has lost about 838 hectares of forest (about 1,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 27 hectares (3.2%) was deforestation: forest cleared for good for farms, mines or towns.
2018: satellite photo from August 2018 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 838 haabout 1,200 football pitches
- Share of its forest
- 11%of what there was in 2000
- Cleared for good
- 27 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 87 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 | 15 ha | 15 ha |
| 2002 | under 1 ha | 25 ha | 26 ha |
| 2003 | under 1 ha | 21 ha | 21 ha |
| 2004 | under 1 ha | 16 ha | 16 ha |
| 2005 | under 1 ha | 20 ha | 20 ha |
| 2006 | under 1 ha | 30 ha | 30 ha |
| 2007 | under 1 ha | 27 ha | 27 ha |
| 2008 | under 1 ha | 33 ha | 34 ha |
| 2009 | under 1 ha | 35 ha | 36 ha |
| 2010 | 2 ha | 64 ha | 66 ha |
| 2011 | under 1 ha | 31 ha | 31 ha |
| 2012 | under 1 ha | 25 ha | 26 ha |
| 2013 | under 1 ha | 16 ha | 16 ha |
| 2014 | 1 ha | 18 ha | 20 ha |
| 2015 | under 1 ha | 15 ha | 15 ha |
| 2016 | 2 ha | 33 ha | 35 ha |
| 2017 | 13 ha | 74 ha | 87 ha |
| 2018 | 2 ha | 39 ha | 41 ha |
| 2019 | under 1 ha | 33 ha | 34 ha |
| 2020 | under 1 ha | 30 ha | 31 ha |
| 2021 | under 1 ha | 34 ha | 34 ha |
| 2022 | under 1 ha | 48 ha | 49 ha |
| 2023 | under 1 ha | 29 ha | 30 ha |
| 2024 | 1 ha | 63 ha | 64 ha |
| 2025 | under 1 ha | 37 ha | 37 ha |
What is causing deforestation around Koszalin?
- Loggingcan grow back96% · 801 ha
- Towns and roadscleared for good3.1% · 26 ha
- Unknown causescause unknown1.1% · 9 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
- 6,390 ha
- Forest in 2020
- 6,540 ha
- Overall change
- +151 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Koszalin grew from about 6,390 hectares to 6,540 hectares, a net gain of about 151 hectares (+2.4%). New forest grew on about 486 hectares, while 335 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 Koszalin
What is the air quality (AQI) in Koszalin right now?
The latest reading for Koszalin shows an AQI of 69 (Moderate), observed Nov 11, 07:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Koszalin today?
At AQI 69 (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 Koszalin been like this week?
Over the last 7 days, the CAMS air-quality model put Koszalin's daily AQI at 72 on average, from 44 on Nov 6 to an hourly peak of 126 on Nov 8. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Koszalin lost since 2001?
Since 2001, the area within 10 km of Koszalin has lost about 838 hectares of forest (about 1,200 football pitches): 11% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 27 hectares (3.2%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Koszalin grew from about 6,390 hectares to 6,540 hectares, a net gain of about 151 hectares (+2.4%). New forest grew on about 486 hectares, while 335 hectares were lost.
What is the tree count in Koszalin?
Koszalin has an estimated 97,704 trees across the 12.57 km² measured — 31.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Koszalin need?
Koszalin has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Koszalin's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Koszalin; the tree count is an estimate derived from that cover.
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