City report · United States
West Covina
Measured across a 2 km radius around Walnut Valley, West Covina, CA, USA (12.57 km²)
- Tree cover
- 10.9%
- Air quality
- 64Moderate
- Trees in this area
- 34.2K
- More trees needed
- 60.0K
- Area analysed
- 12.57 km²
- Satellite image
- Sep 19, 2026
West Covina's tree count comes to 34,243 trees across 12.57 km² — 19 points below the 30% tree-cover level considered healthy for this area, meaning roughly 60,004 more trees would close the gap. Air quality currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
10.9% tree cover against a 30% healthy-neighbourhood target, across 12.57 km².
Trees in this area
34,243
Target trees
94,247
More trees needed
60,004
CO₂ if planted / yr
1,320 t
Air quality detail
AQI 64Moderate
Observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
14.1
PM10
18.6
NO₂
9.0
O₃
113.0
SO₂
3.9
CO
161.0
Frequently asked
Questions about West Covina
What is the tree count in West Covina?
West Covina has an estimated 34,243 trees across the 12.57 km² measured — 10.9% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does West Covina need?
West Covina needs roughly 60,004 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,320 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in West Covina right now?
The latest reading for West Covina shows an AQI of 64 (Moderate), observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is West Covina'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 Walnut Valley; 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