City report · Brazil · Maranhão
Caxias
Measured across a 2 km radius around Centro, Caxias - MA, Brazil (12.57 km²)
- Tree cover
- 26.6%
- Air quality
- 69Moderate
- Trees in this area
- 83.6K
- More trees needed
- 10.7K
- Area analyzed
- 12.57 km²
- Satellite image
- Sep 20, 2026
Caxias's tree count comes to 83,566 trees across 12.57 km² — 3 points below the 30% tree-cover level considered healthy for this area, meaning roughly 10,681 more trees would close the gap. Air quality currently reads AQI 69 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Below target
26.6% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
83,566
Target trees
94,247
More trees needed
10,681
CO₂ if planted / yr
235.0 t
Air quality detail
AQI 69Moderate
Observed Sep 27, 01:00 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
20.7
PM10
23.3
NO₂
10.2
O₃
48.0
SO₂
1.2
CO
144.0
Frequently asked
Questions about Caxias
What is the tree count in Caxias?
Caxias has an estimated 83,566 trees across the 12.57 km² measured — 26.6% tree cover, 3 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Caxias need?
Caxias needs roughly 10,681 more trees to close a 3-point shortfall against its 30% tree-cover target — about 235.0 t of extra CO₂ absorbed per year once grown.
What is the air quality (AQI) in Caxias right now?
The latest reading for Caxias shows an AQI of 69 (Moderate), observed Sep 27, 01:00 local time via Open-Meteo / CAMS, US EPA index. Unusually sensitive people should consider limiting long outdoor exertion.
How is Caxias'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 Centro; 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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