
- Tree cover
- 61.2%
- Air quality
- 20Good
- Trees in this area
- 180K
- More trees needed
- 0
- Area analyzed
- 11.74 km²land, in a 12.57 km² circle
- Satellite image
- Sep 7, 2026
Lahti's tree count comes to 179,576 trees across 11.74 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 20 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
61.2% tree cover against a 30% healthy-neighborhood target, across 11.74 km² of land.
Trees in this area
179,576
Target trees
179,576
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 20Good
Observed Sep 28, 13:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.2
PM10
4.5
NO₂
4.1
O₃
55.0
SO₂
0.3
CO
181.0
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Frequently asked
Questions about Lahti
What is the tree count in Lahti?
Lahti has an estimated 179,576 trees across the 11.74 km² of land measured — 61.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Lahti need?
Lahti has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Lahti right now?
The latest reading for Lahti shows an AQI of 20 (Good), observed Sep 28, 13:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Lahti's tree cover and air quality measured?
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 Lahti; the tree count is an estimate derived from that cover. 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.
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