- Tree cover
- 10.7%
- Air quality
- 68Moderate
- Trees in this area
- 33.6K
- More trees needed
- 60.6K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 19, 2026
Visalia's tree count comes to 33,615 trees across 12.57 km² — 19 points below the 30% tree-cover level considered healthy for this area, meaning roughly 60,633 more trees would close the gap. Air quality currently reads AQI 68 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
10.7% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
33,615
Target trees
94,248
More trees needed
60,633
CO₂ if planted / yr
1,334 t
Air quality detail
AQI 68Moderate
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
20.0
PM10
23.6
NO₂
9.2
O₃
101.0
SO₂
0.9
CO
163.0
Frequently asked
Questions about Visalia
What is the tree count in Visalia?
Visalia has an estimated 33,615 trees across the 12.57 km² measured — 10.7% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Visalia need?
Visalia needs roughly 60,633 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,334 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Visalia right now?
The latest reading for Visalia shows an AQI of 68 (Moderate), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Visalia'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 Visalia; 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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