City report · Canada · Ontario
Hamilton
Measured across a 2 km radius around St. Clair, Hamilton, ON, Canada (12.57 km²)
- Tree cover
- 35.8%
- Air quality
- 21Good
- Trees in this area
- 112K
- More trees needed
- 0
- Area analyzed
- 12.57 km²
- Satellite image
- Aug 25, 2026
Hamilton's tree count comes to 112,469 trees across 12.57 km² — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 21 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
35.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
112,469
Target trees
112,469
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 21Good
Observed Sep 27, 00:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.1
PM10
3.1
NO₂
15.1
O₃
44.0
SO₂
4.5
CO
168.0
Frequently asked
Questions about Hamilton
What is the tree count in Hamilton?
Hamilton has an estimated 112,469 trees across the 12.57 km² measured — 35.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hamilton need?
Hamilton has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Hamilton right now?
The latest reading for Hamilton shows an AQI of 21 (Good), observed Sep 27, 00:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Hamilton'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 St. Clair; the tree count is an estimate derived from that cover. Air-quality readings come from Open-Meteo / CAMS, US EPA index and may differ from street-level monitors.
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