City report · United States
Tempe
Measured across a 2 km radius around University Heights, Tempe, AZ 85281, USA (12.57 km²)
- Tree cover
- 3.4%
- Air quality
- 52Moderate
- Trees in this area
- 10.7K
- More trees needed
- 83.6K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 20, 2026
Tempe's tree count comes to 10,681 trees across 12.57 km² — 27 points below the 30% tree-cover level considered healthy for this area, meaning roughly 83,566 more trees would close the gap. Air quality currently reads AQI 52 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
3.4% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
10,681
Target trees
94,247
More trees needed
83,566
CO₂ if planted / yr
1,838 t
Air quality detail
AQI 52Moderate
Observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
9.7
PM10
46.6
NO₂
13.6
O₃
48.0
SO₂
0.7
CO
126.0
Frequently asked
Questions about Tempe
What is the tree count in Tempe?
Tempe has an estimated 10,681 trees across the 12.57 km² measured — 3.4% tree cover, 27 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tempe need?
Tempe needs roughly 83,566 more trees to close a 27-point shortfall against its 30% tree-cover target — about 1,838 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Tempe right now?
The latest reading for Tempe shows an AQI of 52 (Moderate), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Tempe'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 University Heights; 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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