City report · United States
Salem
Measured across a 2 km radius around Central Area, Salem, OR, USA (12.57 km²)
- Tree cover
- 48.4%
- Air quality
- 33Good
- Trees in this area
- 144K
- More trees needed
- 0
- Area analysed
- 11.9 km²land, in a 12.57 km² circle
- Satellite image
- Sep 16, 2026
Salem's tree count comes to 143,994 trees across 11.9 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 33 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
48.4% tree cover against a 30% healthy-neighbourhood target, across 11.9 km² of land.
Trees in this area
143,994
Target trees
143,994
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 33Good
Observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.1
PM10
4.3
NO₂
1.7
O₃
64.0
SO₂
0.7
CO
127.0
Frequently asked
Questions about Salem
What is the tree count in Salem?
Salem has an estimated 143,994 trees across the 11.9 km² of land measured — 48.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Salem need?
Salem has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Salem right now?
The latest reading for Salem shows an AQI of 33 (Good), observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is Salem'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 Central Area; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS and may differ from street-level monitors.
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