City report · United States
Hartford
Measured across a 2 km radius around Downtown, Hartford, CT, USA (12.57 km²)
- Tree cover
- 42.4%
- Air quality
- 35Good
- Trees in this area
- 128K
- More trees needed
- 0
- Area analysed
- 12.09 km²land, in a 12.57 km² circle
- Satellite image
- Sep 18, 2026
Hartford's tree count comes to 128,142 trees across 12.09 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 35 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
42.4% tree cover against a 30% healthy-neighbourhood target, across 12.09 km² of land.
Trees in this area
128,142
Target trees
128,142
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 35Good
Observed Sep 21, 23:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.9
PM10
7.2
NO₂
16.0
O₃
53.0
SO₂
0.9
CO
204.0
Frequently asked
Questions about Hartford
What is the tree count in Hartford?
Hartford has an estimated 128,142 trees across the 12.09 km² of land measured — 42.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Hartford need?
Hartford has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Hartford right now?
The latest reading for Hartford shows an AQI of 35 (Good), observed Sep 21, 23:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is Hartford'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; 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