City report · United States
Modesto
Measured across a 2 km radius around Downtown Modesto, Modesto, CA, USA (12.57 km²)
- Tree cover
- 22.1%
- Air quality
- 61Moderate
- Trees in this area
- 69.4K
- More trees needed
- 24.8K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 19, 2026
Modesto's tree count comes to 69,429 trees across 12.57 km² — 8 points below the 30% tree-cover level considered healthy for this area, meaning roughly 24,819 more trees would close the gap. Air quality currently reads AQI 61 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Below target
22.1% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
69,429
Target trees
94,248
More trees needed
24,819
CO₂ if planted / yr
546.0 t
Air quality detail
AQI 61Moderate
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
17.1
PM10
68.9
NO₂
9.4
O₃
81.0
SO₂
1.6
CO
135.0
Frequently asked
Questions about Modesto
What is the tree count in Modesto?
Modesto has an estimated 69,429 trees across the 12.57 km² measured — 22.1% tree cover, 8 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Modesto need?
Modesto needs roughly 24,819 more trees to close a 8-point shortfall against its 30% tree-cover target — about 546.0 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Modesto right now?
The latest reading for Modesto shows an AQI of 61 (Moderate), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Modesto'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 Modesto; 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.
See your own area
What does your neighbourhood look like?
Pick any point and radius to get the same tree-cover and air-quality breakdown.
Check my address