City report · The Netherlands · North Holland
Haarlem
Measured across a 2 km radius around Centrum, Haarlem, Netherlands (12.57 km²)
- Tree cover
- 33.4%
- Air quality
- 39Good
- Trees in this area
- 104K
- More trees needed
- 0
- Area analyzed
- 12.41 km²land, in a 12.57 km² circle
- Satellite image
- Aug 12, 2026
Haarlem's tree count comes to 103,565 trees across 12.41 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 39 (Good): Air quality is satisfactory for everyone.
Tree cover detail
Healthy tree cover
33.4% tree cover against a 30% healthy-neighborhood target, across 12.41 km² of land.
Trees in this area
103,565
Target trees
103,565
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 39Good
Observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Air quality is satisfactory for everyone.
PM2.5
9.4
PM10
12.4
NO₂
25.6
O₃
30.0
SO₂
0.8
CO
187.0
Frequently asked
Questions about Haarlem
What is the tree count in Haarlem?
Haarlem has an estimated 103,565 trees across the 12.41 km² of land measured — 33.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Haarlem need?
Haarlem has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Haarlem right now?
The latest reading for Haarlem shows an AQI of 39 (Good), observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Air quality is satisfactory for everyone.
How is Haarlem'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 Centrum; 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.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same tree-cover and air-quality breakdown.
Check my address