City report · United States
Hillsboro
Measured across a 2 km radius around Hillsboro, OR, USA (12.57 km²)
- Tree cover
- 52.3%
- Air quality
- 49Good
- Trees in this area
- 164K
- More trees needed
- 0
- Area analysed
- 12.54 km²land, in a 12.57 km² circle
- Satellite image
- Sep 16, 2026
Hillsboro's tree count comes to 163,977 trees across 12.54 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 49 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
52.3% tree cover against a 30% healthy-neighbourhood target, across 12.54 km² of land.
Trees in this area
163,977
Target trees
163,977
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 49Good
Observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.1
PM10
8.1
NO₂
14.3
O₃
41.0
SO₂
1.0
CO
117.0
Frequently asked
Questions about Hillsboro
What is the tree count in Hillsboro?
Hillsboro has an estimated 163,977 trees across the 12.54 km² of land measured — 52.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hillsboro need?
Hillsboro has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Hillsboro right now?
The latest reading for Hillsboro shows an AQI of 49 (Good), observed Sep 21, 20:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is Hillsboro'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 Hillsboro; 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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