City report · Brazil
Rio Branco Air quality today
Air quality in Rio Branco currently reads AQI 54 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 54
Moderate
- PM2.5, fine particles (µg/m³)
- 10.8
- tree cover
- 27.5%
- trees in this area
- 86.3K
- more trees needed
- 7.8K
Measured across a 2 km radius around Centro, Rio Branco - AC, Brazil (12.57 km²), from a satellite image of Oct 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Rio Branco · AQI 54 (Moderate)
Rio Branco's tree count comes to 86,307 trees across 12.56 km² of land, 2 points below the 30% tree-cover level considered healthy for this area, so roughly 7,846 more trees would close the gap.
Air quality detail
Air quality in Rio Branco today: AQI 54, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.8
PM10
11.1
NO₂
3.6
O₃
22.0
SO₂
0.5
CO
270.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Rio Branco's daily AQI at 50 on average, from 26 on Nov 9 to an hourly peak of 76 on Nov 5.
Where Rio Branco stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Rio Branco: Below target
27.5% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
86,307
Target trees
94,153
More trees needed
7,846
CO₂ if planted / yr
172.6 t
Deforestation · 2001–2025
How much forest has Rio Branco lost?
Since 2001, the area within 10 km of Rio Branco has lost about 3,200 hectares of forest (about 4,500 football pitches): 29% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from July 2017 of a 5 × 5 km area about 6 km southwest of the city center.
- Forest lost since 2001
- 3,200 haabout 4,500 football pitches
- Share of its forest
- 29%of what there was in 2000
- Cleared for good
- 3,200 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 101 hectares a year in 2021–2025, down from 148 hectares a year in 2016–2020. The worst year was 2005, when about 462 hectares of forest were lost.
Rio Branco's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 323 ha | under 1 ha | 323 ha |
| 2002 | 85 ha | under 1 ha | 85 ha |
| 2003 | 56 ha | under 1 ha | 56 ha |
| 2004 | 97 ha | under 1 ha | 98 ha |
| 2005 | 462 ha | under 1 ha | 462 ha |
| 2006 | 64 ha | under 1 ha | 65 ha |
| 2007 | 124 ha | under 1 ha | 124 ha |
| 2008 | 89 ha | under 1 ha | 89 ha |
| 2009 | 47 ha | under 1 ha | 47 ha |
| 2010 | 150 ha | 1 ha | 151 ha |
| 2011 | 98 ha | under 1 ha | 98 ha |
| 2012 | 102 ha | under 1 ha | 102 ha |
| 2013 | 69 ha | under 1 ha | 69 ha |
| 2014 | 108 ha | under 1 ha | 108 ha |
| 2015 | 79 ha | under 1 ha | 79 ha |
| 2016 | 186 ha | under 1 ha | 186 ha |
| 2017 | 216 ha | under 1 ha | 216 ha |
| 2018 | 108 ha | under 1 ha | 108 ha |
| 2019 | 69 ha | under 1 ha | 69 ha |
| 2020 | 162 ha | under 1 ha | 162 ha |
| 2021 | 155 ha | under 1 ha | 155 ha |
| 2022 | 174 ha | under 1 ha | 174 ha |
| 2023 | 39 ha | under 1 ha | 39 ha |
| 2024 | 61 ha | under 1 ha | 62 ha |
| 2025 | 74 ha | under 1 ha | 74 ha |
What is causing deforestation around Rio Branco?
- Farms, pasture and plantationscleared for good83% · 2,660 ha
- Towns and roadscleared for good17% · 530 ha
Also: storms, floods and other natural causes, shifting farming, 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
- 7,210 ha
- Forest in 2020
- 6,300 ha
- Overall change
- −912 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Rio Branco shrank from about 7,210 hectares to 6,300 hectares, a net loss of about 912 hectares (−13%). New forest grew on about 712 hectares, but 1,620 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
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Frequently asked
Questions about Rio Branco
What is the air quality (AQI) in Rio Branco right now?
The latest reading for Rio Branco shows an AQI of 54 (Moderate), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Rio Branco today?
At AQI 54 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Rio Branco been like this week?
Over the last 7 days, the CAMS air-quality model put Rio Branco's daily AQI at 50 on average, from 26 on Nov 9 to an hourly peak of 76 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 Rio Branco lost since 2001?
Since 2001, the area within 10 km of Rio Branco has lost about 3,200 hectares of forest (about 4,500 football pitches): 29% of the forest it had in 2000. Most of it (over 99%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Forest loss is slowing down: about 101 hectares a year in 2021–2025, down from 148 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Rio Branco shrank from about 7,210 hectares to 6,300 hectares, a net loss of about 912 hectares (−13%). New forest grew on about 712 hectares, but 1,620 hectares were lost.
What is the tree count in Rio Branco?
Rio Branco has an estimated 86,307 trees across the 12.56 km² of land measured — 27.5% tree cover, 2 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Rio Branco need?
Rio Branco needs roughly 7,846 more trees to close a 2-point shortfall against its 30% tree-cover target — about 172.6 t of extra CO₂ absorbed per year once grown.
How are Rio Branco'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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