City report · South Africa · Free State
Welkom
Measured across a 2 km radius around Welkom Central, Welkom, 9459, South Africa (12.57 km²)
- Tree cover
- 42.5%
- Air quality
- 64Moderate
- Trees in this area
- 134K
- More trees needed
- 0
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 25, 2026
Welkom's tree count comes to 133,518 trees across 12.57 km² — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
42.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
133,518
Target trees
133,518
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 64Moderate
Observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.4
PM10
18.7
NO₂
5.5
O₃
66.0
SO₂
2.9
CO
210.0
Frequently asked
Questions about Welkom
What is the tree count in Welkom?
Welkom has an estimated 133,518 trees across the 12.57 km² measured — 42.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Welkom need?
Welkom has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Welkom right now?
The latest reading for Welkom shows an AQI of 64 (Moderate), observed Sep 27, 06:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Welkom'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 Welkom Central; 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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