City report · Finland
Turku Air quality today
Air quality in Turku currently reads AQI 32 (Good): Air quality is satisfactory for everyone.
AQI 32
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 5.7
- tree cover
- 40.1%
- trees in this area
- 124K
- more trees needed
- 0
Measured across a 2 km radius around District VI, Turku, Finland (12.57 km²), from a satellite image of Sep 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Turku · AQI 32 (Good)
Turku's tree count comes to 124,214 trees across 12.39 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Turku today: AQI 32, Good
Main pollutant: PM2.5 · Observed Nov 11, 17:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Kauppatori 2, Turku, Finland, 100 m away · median of 2 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
5.7
PM10
8.1
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Ilmanlaatu - Air Quality in finland
- 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 Turku's daily AQI at 17 on average, from 11 on Nov 5 to an hourly peak of 41 on Nov 10.
Where Turku stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Turku: Healthy tree cover
40.1% tree cover against a 30% healthy-neighborhood target, across 12.39 km² of land.
Trees in this area
124,214
Target trees
124,214
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Turku lost?
Since 2001, the area within 10 km of Turku has lost about 1,620 hectares of forest (about 2,300 football pitches): 12% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 1,620 haabout 2,300 football pitches
- Share of its forest
- 12%of what there was in 2000
- Cleared for good
- 919 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 103 hectares a year in 2016–2020. The worst year was 2017, when about 206 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 | 24 ha | 26 ha | 50 ha |
| 2002 | 10 ha | 6 ha | 16 ha |
| 2003 | 40 ha | 18 ha | 58 ha |
| 2004 | 19 ha | 28 ha | 48 ha |
| 2005 | 31 ha | 17 ha | 48 ha |
| 2006 | 41 ha | 19 ha | 60 ha |
| 2007 | 31 ha | 12 ha | 42 ha |
| 2008 | 48 ha | 14 ha | 62 ha |
| 2009 | 46 ha | 46 ha | 92 ha |
| 2010 | 47 ha | 19 ha | 67 ha |
| 2011 | 50 ha | 31 ha | 82 ha |
| 2012 | 61 ha | 22 ha | 83 ha |
| 2013 | 17 ha | 14 ha | 31 ha |
| 2014 | 32 ha | 27 ha | 59 ha |
| 2015 | 34 ha | 25 ha | 59 ha |
| 2016 | 70 ha | 32 ha | 102 ha |
| 2017 | 97 ha | 109 ha | 206 ha |
| 2018 | 27 ha | 41 ha | 67 ha |
| 2019 | 40 ha | 33 ha | 73 ha |
| 2020 | 36 ha | 33 ha | 69 ha |
| 2021 | 27 ha | 11 ha | 38 ha |
| 2022 | 27 ha | 25 ha | 52 ha |
| 2023 | 15 ha | 22 ha | 37 ha |
| 2024 | 22 ha | 28 ha | 51 ha |
| 2025 | 27 ha | 38 ha | 65 ha |
What is causing deforestation around Turku?
- Towns and roadscleared for good56% · 909 ha
- Loggingcan grow back42% · 681 ha
Also: mining and energy, 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
- 11,800 ha
- Forest in 2020
- 11,200 ha
- Overall change
- −569 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Turku shrank from about 11,800 hectares to 11,200 hectares, a net loss of about 569 hectares (−4.8%). New forest grew on about 468 hectares, but 1,040 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 Turku
Same 2 km radius, same index — so they compare directly.
- Mariehamn134.6 km
Aland Islands
- Tree cover
- 58%
- Air quality
- 30
- Vantaa153.4 km
Finland
- Tree cover
- 39%
- Air quality
- 67
- Tallinn178.5 km
Estonia
- Tree cover
- 31%
- Air quality
- 121
Also compared:Turku vs Oulu
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Frequently asked
Questions about Turku
What is the air quality (AQI) in Turku right now?
The latest reading for Turku shows an AQI of 32 (Good), measured Nov 11, 17:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Kauppatori 2, Turku, Finland, 100 m away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Turku today?
At AQI 32 (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 Turku been like this week?
Over the last 7 days, the CAMS air-quality model put Turku's daily AQI at 17 on average, from 11 on Nov 5 to an hourly peak of 41 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 Turku lost since 2001?
Since 2001, the area within 10 km of Turku has lost about 1,620 hectares of forest (about 2,300 football pitches): 12% of the forest it had in 2000. Most of it (57%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 103 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Turku shrank from about 11,800 hectares to 11,200 hectares, a net loss of about 569 hectares (−4.8%). New forest grew on about 468 hectares, but 1,040 hectares were lost.
What is the tree count in Turku?
Turku has an estimated 124,214 trees across the 12.39 km² of land measured — 40.1% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Turku need?
Turku has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Turku's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near District VI, 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 District VI; the tree count is an estimate derived from that cover.
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