City report · Estonia
Tallinn Air quality today
Air quality in Tallinn currently reads AQI 117 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 117
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 42.0
- tree cover
- 30.5%
- trees in this area
- 82.3K
- more trees needed
- 12.1K
Measured across a 2 km radius around Vanalinn, Tallinn, Estonia (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tallinn · AQI 117 (Unhealthy for sensitive groups)
Tallinn's tree count comes to 82,308 trees across 10.8 km² of land, 4 points below the 35% tree-cover level considered healthy for this area, so roughly 12,144 more trees would close the gap.
Air quality detail
Air quality in Tallinn today: AQI 117, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 20:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Haabneeme, 10.4 km away · median of 4 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
42.0
PM10
28.0
NO₂
16.2
O₃
19.2
SO₂
0.7
CO
341.4
Data: OpenAQ · AirGradient, EEA, Private
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Tallinn's daily AQI at 26 on average, from 13 on Nov 5 to an hourly peak of 64 on Nov 10.
Where Tallinn stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tallinn: Below target
30.5% tree cover against a 35% healthy-neighborhood target, across 10.8 km² of land.
Trees in this area
82,308
Target trees
94,452
More trees needed
12,144
CO₂ if planted / yr
267.2 t
Deforestation · 2001–2025
How much forest has Tallinn lost?
Since 2001, the area within 10 km of Tallinn has lost about 972 hectares of forest (about 1,400 football pitches): 12% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 972 haabout 1,400 football pitches
- Share of its forest
- 12%of what there was in 2000
- Cleared for good
- 581 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 45 hectares a year in 2021–2025, down from 62 hectares a year in 2016–2020. The worst year was 2002, when about 114 hectares of forest were lost, mostly to wildfires.
Tallinn's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 9 ha | 8 ha | 17 ha |
| 2002 | 18 ha | 96 ha | 114 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 17 ha | 7 ha | 24 ha |
| 2005 | 10 ha | 1 ha | 11 ha |
| 2006 | 66 ha | 7 ha | 73 ha |
| 2007 | 25 ha | 13 ha | 37 ha |
| 2008 | 12 ha | 6 ha | 18 ha |
| 2009 | 29 ha | 13 ha | 42 ha |
| 2010 | 3 ha | 12 ha | 15 ha |
| 2011 | 22 ha | 6 ha | 28 ha |
| 2012 | 17 ha | 4 ha | 21 ha |
| 2013 | 4 ha | 7 ha | 11 ha |
| 2014 | 12 ha | 2 ha | 14 ha |
| 2015 | 5 ha | 6 ha | 11 ha |
| 2016 | 60 ha | 34 ha | 93 ha |
| 2017 | 44 ha | 24 ha | 69 ha |
| 2018 | 48 ha | 14 ha | 62 ha |
| 2019 | 34 ha | 11 ha | 45 ha |
| 2020 | 26 ha | 14 ha | 40 ha |
| 2021 | 45 ha | 8 ha | 54 ha |
| 2022 | 32 ha | 22 ha | 55 ha |
| 2023 | 11 ha | 8 ha | 19 ha |
| 2024 | 24 ha | 40 ha | 64 ha |
| 2025 | 7 ha | 27 ha | 35 ha |
What is causing deforestation around Tallinn?
- Towns and roadscleared for good39% · 383 ha
- Loggingcan grow back31% · 297 ha
- Farms, pasture and plantationscleared for good16% · 151 ha
Also: wildfires, 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
- 7,080 ha
- Forest in 2020
- 6,870 ha
- Overall change
- −209 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tallinn shrank from about 7,080 hectares to 6,870 hectares, a net loss of about 209 hectares (−3%). New forest grew on about 454 hectares, but 662 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 Tallinn
Same 2 km radius, same index — so they compare directly.
- Helsinki82.1 km
Finland
- Tree cover
- 25%
- Air quality
- 78
- Espoo85.6 km
Finland
- Tree cover
- 59%
- Air quality
- 79
- Vantaa96.6 km
Finland
- Tree cover
- 39%
- Air quality
- 70
- Kohtla-Järve142.6 km
Estonia
- Tree cover
- 38%
- Air quality
- 68
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Frequently asked
Questions about Tallinn
What is the air quality (AQI) in Tallinn right now?
The latest reading for Tallinn shows an AQI of 117 (Unhealthy for sensitive groups), measured Nov 11, 20:00 local time by 4 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Haabneeme, 10.4 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Tallinn today?
At AQI 117 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Tallinn been like this week?
Over the last 7 days, the CAMS air-quality model put Tallinn's daily AQI at 26 on average, from 13 on Nov 5 to an hourly peak of 64 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 Tallinn lost since 2001?
Since 2001, the area within 10 km of Tallinn has lost about 972 hectares of forest (about 1,400 football pitches): 12% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss is slowing down: about 45 hectares a year in 2021–2025, down from 62 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Tallinn shrank from about 7,080 hectares to 6,870 hectares, a net loss of about 209 hectares (−3%). New forest grew on about 454 hectares, but 662 hectares were lost.
What is the tree count in Tallinn?
Tallinn has an estimated 82,308 trees across the 10.8 km² of land measured — 30.5% tree cover, 4 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Tallinn need?
Tallinn needs roughly 12,144 more trees to close a 4-point shortfall against its 35% tree-cover target — about 267.2 t of extra CO₂ absorbed per year once grown.
How are Tallinn's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Vanalinn, 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 Vanalinn; the tree count is an estimate derived from that cover.
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