- Tree cover
- 30.2%
- Air quality
- 49Good
- Trees in this area
- 74.3K
- More trees needed
- 0
- Area analysed
- 9.84 km²land, in a 12.57 km² circle
- Satellite image
- Sep 18, 2026
Norfolk's tree count comes to 74,288 trees across 9.84 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
30.2% tree cover against a 30% healthy-neighbourhood target, across 9.84 km² of land.
Trees in this area
74,288
Target trees
74,288
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 49Good
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
7.1
PM10
9.5
NO₂
5.0
O₃
84.0
SO₂
0.9
CO
165.0
Frequently asked
Questions about Norfolk
What is the tree count in Norfolk?
Norfolk has an estimated 74,288 trees across the 9.84 km² of land measured — 30.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Norfolk need?
Norfolk has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Norfolk right now?
The latest reading for Norfolk shows an AQI of 49 (Good), observed Sep 21, 23:00 local time via Open-Meteo / CAMS. Air quality is satisfactory for everyone.
How is Norfolk'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 Norfolk; 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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