City report · United States
Fresno
Measured across a 2 km radius around Roosevelt, Fresno, CA, USA (12.57 km²)
- Tree cover
- 7.4%
- Air quality
- 118Unhealthy for sensitive groups
- Trees in this area
- 23.2K
- More trees needed
- 86.7K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 19, 2026
Fresno's tree count comes to 23,248 trees across 12.57 km² — 28 points below the 35% tree-cover level considered healthy for this area, meaning roughly 86,708 more trees would close the gap. Air quality currently reads AQI 118 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Tree cover detail
Critically low
7.4% tree cover against a 35% healthy-neighbourhood target, across 12.57 km².
Trees in this area
23,248
Target trees
109,956
More trees needed
86,708
CO₂ if planted / yr
1,908 t
Air quality detail
AQI 118Unhealthy for sensitive groups
Observed Sep 21, 16:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
35.0
PM10
42.5
NO₂
1.7
O₃
135.0
SO₂
1.8
CO
120.0
Frequently asked
Questions about Fresno
What is the tree count in Fresno?
Fresno has an estimated 23,248 trees across the 12.57 km² measured — 7.4% tree cover, 28 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Fresno need?
Fresno needs roughly 86,708 more trees to close a 28-point shortfall against its 35% tree-cover target — about 1,908 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Fresno right now?
The latest reading for Fresno shows an AQI of 118 (Unhealthy for sensitive groups), observed Sep 21, 16:00 local time via Open-Meteo / CAMS. Sensitive groups should limit long or intense outdoor activity.
How is Fresno'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 Roosevelt; 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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