City report · Rio de Janeiro, Brazil
Cabo Frio Air quality today
Air quality in Cabo Frio currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
AQI 14
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.1
- tree cover
- 13.7%
- trees in this area
- 29.3K
- more trees needed
- 34.8K
Measured across a 2 km radius around Algodoal, Cabo Frio - RJ, Brazil (12.57 km²), from a satellite image of Oct 31, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Cabo Frio · AQI 14 (Good)
Cabo Frio's tree count comes to 29,267 trees across 8.55 km² of land, 16 points below the 30% tree-cover level considered healthy for this area, so roughly 34,821 more trees would close the gap.
Air quality detail
Air quality in Cabo Frio today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 125 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 125 km, e.g. São Gonçalo and Niterói
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.1
PM10
19.6
NO₂
1.6
O₃
55.0
SO₂
0.5
CO
65.0
- 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 Cabo Frio's daily AQI at 56 on average, from 48 on Nov 8 to an hourly peak of 77 on Nov 5.
Where Cabo Frio stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Cabo Frio: Critically low
13.7% tree cover against a 30% healthy-neighborhood target, across 8.55 km² of land.
Trees in this area
29,267
Target trees
64,088
More trees needed
34,821
CO₂ if planted / yr
766.1 t
Deforestation · 2001–2025
How much forest has Cabo Frio lost?
Since 2001, the area within 10 km of Cabo Frio has lost about 156 hectares of forest (about 220 football pitches): 6.8% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from May 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 156 haabout 220 football pitches
- Share of its forest
- 6.8%of what there was in 2000
- Cleared for good
- 144 hadeforestation: turned into farms, mines or towns
The worst year was 2016, when about 48 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 | 23 ha | 1 ha | 24 ha |
| 2002 | 2 ha | under 1 ha | 3 ha |
| 2003 | 5 ha | under 1 ha | 5 ha |
| 2004 | 3 ha | under 1 ha | 3 ha |
| 2005 | 3 ha | under 1 ha | 3 ha |
| 2006 | 7 ha | under 1 ha | 7 ha |
| 2007 | 2 ha | under 1 ha | 2 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 4 ha | under 1 ha | 4 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | 4 ha | under 1 ha | 5 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 8 ha | under 1 ha | 8 ha |
| 2014 | 5 ha | under 1 ha | 6 ha |
| 2015 | 4 ha | under 1 ha | 5 ha |
| 2016 | 47 ha | 2 ha | 48 ha |
| 2017 | 13 ha | 3 ha | 16 ha |
| 2018 | 4 ha | under 1 ha | 5 ha |
| 2019 | 2 ha | under 1 ha | 3 ha |
| 2020 | 4 ha | under 1 ha | 4 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | 1 ha |
| 2023 | under 1 ha | under 1 ha | 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Cabo Frio?
- Farms, pasture and plantationscleared for good57% · 89 ha
- Towns and roadscleared for good33% · 52 ha
- Storms, floods and other natural causescan grow back3.4% · 5 ha
Also: mining and energy, 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
- 1,570 ha
- Forest in 2020
- 1,500 ha
- Overall change
- −66 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Cabo Frio shrank from about 1,570 hectares to 1,500 hectares, a net loss of about 66 hectares (−4.2%). New forest grew on about 40 hectares, but 106 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 Cabo Frio
Same 2 km radius, same index — so they compare directly.
- Araruama32.5 km
Brazil
- Tree cover
- 31%
- Air quality
- 17
- Rio das Ostras40.9 km
Brazil
- Tree cover
- 28%
- Air quality
- 21
- Macaé61.2 km
Brazil
- Tree cover
- 21%
- Air quality
- 16
- Maricá81.2 km
Brazil
- Tree cover
- 48%
- Air quality
- 14
- Nova Friburgo85.0 km
Brazil
- Tree cover
- 63%
- Air quality
- 9
- Itaboraí86.9 km
Brazil
- Tree cover
- 45%
- Air quality
- 13
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Frequently asked
Questions about Cabo Frio
What is the air quality (AQI) in Cabo Frio right now?
The latest reading for Cabo Frio shows an AQI of 14 (Good), observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 125 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Cabo Frio today?
At AQI 14 (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 Cabo Frio been like this week?
Over the last 7 days, the CAMS air-quality model put Cabo Frio's daily AQI at 56 on average, from 48 on Nov 8 to an hourly peak of 77 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 Cabo Frio lost since 2001?
Since 2001, the area within 10 km of Cabo Frio has lost about 156 hectares of forest (about 220 football pitches): 6.8% of the forest it had in 2000. Most of it (92%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Cabo Frio shrank from about 1,570 hectares to 1,500 hectares, a net loss of about 66 hectares (−4.2%). New forest grew on about 40 hectares, but 106 hectares were lost.
What is the tree count in Cabo Frio?
Cabo Frio has an estimated 29,267 trees across the 8.55 km² of land measured — 13.7% tree cover, 16 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Cabo Frio need?
Cabo Frio needs roughly 34,821 more trees to close a 16-point shortfall against its 30% tree-cover target — about 766.1 t of extra CO₂ absorbed per year once grown.
How are Cabo Frio'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 Algodoal; the tree count is an estimate derived from that cover.
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