City report · United States
Knoxville
Measured across a 2 km radius around Downtown, Knoxville, TN, USA (12.57 km²)
- Tree cover
- 31.8%
- Air quality
- 55Moderate
- Trees in this area
- 93.6K
- More trees needed
- 0
- Area analysed
- 11.78 km²land, in a 12.57 km² circle
- Satellite image
- Sep 20, 2026
Knoxville's tree count comes to 93,609 trees across 11.78 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 55 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
31.8% tree cover against a 30% healthy-neighbourhood target, across 11.78 km² of land.
Trees in this area
93,609
Target trees
93,609
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 55Moderate
Observed Sep 21, 23:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
11.2
PM10
11.5
NO₂
8.7
O₃
81.0
SO₂
0.8
CO
190.0
Frequently asked
Questions about Knoxville
What is the tree count in Knoxville?
Knoxville has an estimated 93,609 trees across the 11.78 km² of land measured — 31.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Knoxville need?
Knoxville has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Knoxville right now?
The latest reading for Knoxville shows an AQI of 55 (Moderate), observed Sep 21, 23:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Knoxville'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 Downtown; 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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