City report · Rio de Janeiro, Brazil
Angra dos Reis Air quality today
Air quality in Angra dos Reis currently reads AQI 37 (Good): Air quality is satisfactory for everyone.
AQI 37
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.5
- tree cover
- 63.2%
- trees in this area
- 133K
- more trees needed
- 0
Measured across a 2 km radius around Centro, Angra dos Reis - RJ, Brazil (12.57 km²), from a satellite image of Nov 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Angra dos Reis · AQI 37 (Good)
Angra dos Reis's tree count comes to 133,226 trees across 8.43 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Angra dos Reis today: AQI 37, Good
Main pollutant: PM2.5 · Observed Nov 11, 05:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 85 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 2 station cities within 85 km, e.g. Itaguaí and Queimados
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.5
PM10
14.3
NO₂
13.7
O₃
22.0
SO₂
7.0
CO
106.0
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Angra dos Reis's daily AQI at 52 on average, from 43 on Nov 6 to an hourly peak of 63 on Nov 5.
Where Angra dos Reis stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Angra dos Reis: Healthy tree cover
63.2% tree cover against a 30% healthy-neighborhood target, across 8.43 km² of land.
Trees in this area
133,226
Target trees
133,226
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Angra dos Reis lost?
Since 2001, the area within 10 km of Angra dos Reis has lost about 217 hectares of forest (about 300 football pitches): 2.2% of the forest it had in 2000. Most of it (84%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area about 6 km northeast of the city center.
- Forest lost since 2001
- 217 haabout 300 football pitches
- Share of its forest
- 2.2%of what there was in 2000
- Cleared for good
- 182 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 43 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 4 ha | under 1 ha | 5 ha |
| 2002 | 4 ha | 2 ha | 6 ha |
| 2003 | 9 ha | under 1 ha | 10 ha |
| 2004 | 5 ha | under 1 ha | 5 ha |
| 2005 | 3 ha | under 1 ha | 3 ha |
| 2006 | 3 ha | under 1 ha | 3 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | 4 ha | under 1 ha | 4 ha |
| 2009 | 2 ha | under 1 ha | 2 ha |
| 2010 | 9 ha | 1 ha | 10 ha |
| 2011 | 5 ha | under 1 ha | 5 ha |
| 2012 | 17 ha | 1 ha | 18 ha |
| 2013 | 5 ha | 1 ha | 7 ha |
| 2014 | 18 ha | 1 ha | 19 ha |
| 2015 | 9 ha | 2 ha | 10 ha |
| 2016 | 3 ha | under 1 ha | 3 ha |
| 2017 | 37 ha | 6 ha | 43 ha |
| 2018 | 5 ha | under 1 ha | 5 ha |
| 2019 | 2 ha | under 1 ha | 3 ha |
| 2020 | 4 ha | under 1 ha | 4 ha |
| 2021 | 5 ha | under 1 ha | 5 ha |
| 2022 | 4 ha | under 1 ha | 5 ha |
| 2023 | 9 ha | under 1 ha | 9 ha |
| 2024 | 6 ha | 15 ha | 21 ha |
| 2025 | 10 ha | 1 ha | 12 ha |
What is causing deforestation around Angra dos Reis?
- Towns and roadscleared for good56% · 121 ha
- Farms, pasture and plantationscleared for good28% · 61 ha
- Wildfirescan grow back7.9% · 17 ha
Also: storms, floods and other natural causes, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 9,190 ha
- Forest in 2020
- 9,320 ha
- Overall change
- +130 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Angra dos Reis stayed about the same size, at about 9,320 hectares: new forest grew on about 215 hectares, and about 86 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Angra dos Reis
Same 2 km radius, same index — so they compare directly.
- Volta Redonda58.1 km
Brazil
- Tree cover
- 39%
- Air quality
- 9
- Itaguaí58.2 km
Brazil
- Tree cover
- 34%
- Air quality
- 11
- Resende61.2 km
Brazil
- Tree cover
- 37%
- Air quality
- 6
- Barra do Piraí78.2 km
Brazil
- Tree cover
- 41%
- Air quality
- 14
- Japeri79.2 km
Brazil
- Tree cover
- 55%
- Air quality
- 25
- Queimados84.6 km
Brazil
- Tree cover
- 36%
- Air quality
- 45
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Frequently asked
Questions about Angra dos Reis
What is the air quality (AQI) in Angra dos Reis right now?
The latest reading for Angra dos Reis shows an AQI of 37 (Good), observed Nov 11, 05:00 local time via Open-Meteo / CAMS, corrected with 2 ground-station cities within 85 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Angra dos Reis today?
At AQI 37 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Angra dos Reis been like this week?
Over the last 7 days, the CAMS air-quality model put Angra dos Reis's daily AQI at 52 on average, from 43 on Nov 6 to an hourly peak of 63 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Angra dos Reis lost since 2001?
Since 2001, the area within 10 km of Angra dos Reis has lost about 217 hectares of forest (about 300 football pitches): 2.2% of the forest it had in 2000. Most of it (84%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Angra dos Reis stayed about the same size, at about 9,320 hectares: new forest grew on about 215 hectares, and about 86 hectares were lost.
What is the tree count in Angra dos Reis?
Angra dos Reis has an estimated 133,226 trees across the 8.43 km² of land measured — 63.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Angra dos Reis need?
Angra dos Reis has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Angra dos Reis's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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.
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