City report · Brazil · Rio de Janeiro
Rio das Ostras
Measured across a 2 km radius around Balneário Remanso, Rio das Ostras - RJ, Brazil (12.57 km²)
- Tree cover
- 38.0%
- Air quality
- 80Moderate
- Trees in this area
- 81.4K
- More trees needed
- 0
- Area analyzed
- 8.57 km²land, in a 12.57 km² circle
- Satellite image
- Sep 26, 2026
Rio das Ostras's tree count comes to 81,418 trees across 8.57 km² of land — already at or above the 30% tree-cover level considered healthy for this area. Air quality currently reads AQI 80 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Tree cover detail
Healthy tree cover
38.0% tree cover against a 30% healthy-neighborhood target, across 8.57 km² of land.
Trees in this area
81,418
Target trees
81,418
More trees needed
0
CO₂ if planted / yr
0 kg
Air quality detail
AQI 80Moderate
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
25.8
PM10
27.6
NO₂
7.3
O₃
44.0
SO₂
1.0
CO
251.0
Frequently asked
Questions about Rio das Ostras
What is the tree count in Rio das Ostras?
Rio das Ostras has an estimated 81,418 trees across the 8.57 km² of land measured — 38.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Rio das Ostras need?
Rio das Ostras has already reached its tree-cover target, so no additional trees are needed to close the gap.
What is the air quality (AQI) in Rio das Ostras right now?
The latest reading for Rio das Ostras shows an AQI of 80 (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 Rio das Ostras'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 Balneário Remanso; 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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