City report · South Africa · Gauteng
Thembisa
Measured across a 2 km radius around Tlamatlama, Thembisa, 1632, South Africa (12.57 km²)
- Tree cover
- 5.4%
- Air quality
- 53Moderate
- Trees in this area
- 17.0K
- More trees needed
- 77.3K
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 22, 2026
Thembisa's tree count comes to 16,965 trees across 12.57 km² — 25 points below the 30% tree-cover level considered healthy for this area, meaning roughly 77,283 more trees would close the gap. Air quality currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Critically low
5.4% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
16,965
Target trees
94,248
More trees needed
77,283
CO₂ if planted / yr
1,700 t
Air quality detail
AQI 53Moderate
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
13.2
PM10
13.5
NO₂
10.9
O₃
62.0
SO₂
17.3
CO
232.0
Frequently asked
Questions about Thembisa
What is the tree count in Thembisa?
Thembisa has an estimated 16,965 trees across the 12.57 km² measured — 5.4% tree cover, 25 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Thembisa need?
Thembisa needs roughly 77,283 more trees to close a 25-point shortfall against its 30% tree-cover target — about 1,700 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Thembisa right now?
The latest reading for Thembisa shows an AQI of 53 (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 Thembisa'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 Tlamatlama; 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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