
- Tree cover
- 50.6%
- Air quality
- 30Good
- Trees in this area
- 148K
- More trees needed
- 0
- Area analyzed
- 11.74 km²land, in a 12.57 km² circle
- Satellite image
- Sep 24, 2026
Västerås's tree count comes to 148,473 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 30 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
50.6% tree cover against a 30% healthy-neighborhood target, across 11.74 km² of land.
Trees in this area
148,473
Target trees
148,473
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 30Good
Observed Sep 28, 11:00 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
7.1
PM10
10.7
NO₂
2.0
O₃
69.0
SO₂
2.9
CO
171.0
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Frequently asked
Questions about Västerås
What is the tree count in Västerås?
Västerås has an estimated 148,473 trees across the 11.74 km² of land measured — 50.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Västerås need?
Västerås has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Västerås right now?
The latest reading for Västerås shows an AQI of 30 (Good), observed Sep 28, 11:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Västerås'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 Västerås; 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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