City report · United States
Alief
Measured across a 2 km radius around Alief, Houston, TX, USA (12.57 km²)
- Tree cover
- 33.0%
- Air quality
- 86Moderate
- Trees in this area
- 102K
- More trees needed
- 0
- Area analysed
- 12.42 km²land, in a 12.57 km² circle
- Satellite image
- Sep 7, 2026
Alief's tree count comes to 102,428 trees across 12.42 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 86 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
33.0% tree cover against a 30% healthy-neighbourhood target, across 12.42 km² of land.
Trees in this area
102,428
Target trees
102,428
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 86Moderate
Observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Values in µg/m³.
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
19.5
PM10
24.1
NO₂
7.8
O₃
146.0
SO₂
5.0
CO
132.0
Frequently asked
Questions about Alief
What is the tree count in Alief?
Alief has an estimated 102,428 trees across the 12.42 km² of land measured — 33.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Alief need?
Alief has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Alief right now?
The latest reading for Alief shows an AQI of 86 (Moderate), observed Sep 21, 18:00 local time via Open-Meteo / CAMS. Unusually sensitive people should consider limiting long outdoor exertion.
How is Alief'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 Alief; 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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