City report · Rio de Janeiro, Brazil
Petrópolis Air quality today
Air quality in Petrópolis currently reads AQI 14 (Good): Air quality is satisfactory for everyone.
AQI 14
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 2.5
- tree cover
- 73.8%
- trees in this area
- 232K
- more trees needed
- 0
Measured across a 2 km radius around Centro, Petrópolis - RJ, Brazil (12.57 km²), from a satellite image of Oct 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Petrópolis · AQI 14 (Good)
Petrópolis's tree count comes to 231,850 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Petrópolis today: AQI 14, Good
Main pollutant: PM2.5 · Observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 45 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 45 km, e.g. Duque de Caxias and São Gonçalo
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.5
PM10
11.5
NO₂
11.6
O₃
19.0
SO₂
2.2
CO
127.0
- 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 Petrópolis's daily AQI at 56 on average, from 46 on Nov 7 to an hourly peak of 97 on Nov 6.
Where Petrópolis stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Petrópolis: Healthy tree cover
73.8% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
231,850
Target trees
231,850
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Petrópolis lost?
Since 2001, the area within 10 km of Petrópolis has lost about 362 hectares of forest (about 510 football pitches): 1.4% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area about 4 km southeast of the city center.
- Forest lost since 2001
- 362 haabout 510 football pitches
- Share of its forest
- 1.4%of what there was in 2000
- Cleared for good
- 216 hadeforestation: turned into farms, mines or towns
The worst year was 2024, when about 48 hectares of forest were lost, mostly to wildfires.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 11 ha | 3 ha | 13 ha |
| 2002 | 5 ha | under 1 ha | 6 ha |
| 2003 | 2 ha | 1 ha | 4 ha |
| 2004 | 7 ha | under 1 ha | 8 ha |
| 2005 | 2 ha | under 1 ha | 3 ha |
| 2006 | 4 ha | 2 ha | 5 ha |
| 2007 | 10 ha | 5 ha | 14 ha |
| 2008 | 13 ha | 5 ha | 18 ha |
| 2009 | 4 ha | 1 ha | 5 ha |
| 2010 | 5 ha | under 1 ha | 6 ha |
| 2011 | 10 ha | 2 ha | 12 ha |
| 2012 | 8 ha | 1 ha | 10 ha |
| 2013 | 6 ha | 2 ha | 8 ha |
| 2014 | 35 ha | 6 ha | 41 ha |
| 2015 | 9 ha | 6 ha | 15 ha |
| 2016 | 5 ha | 4 ha | 9 ha |
| 2017 | 19 ha | 20 ha | 39 ha |
| 2018 | 3 ha | 3 ha | 7 ha |
| 2019 | 4 ha | under 1 ha | 4 ha |
| 2020 | 13 ha | 5 ha | 18 ha |
| 2021 | 3 ha | 2 ha | 4 ha |
| 2022 | 11 ha | 2 ha | 13 ha |
| 2023 | 6 ha | under 1 ha | 6 ha |
| 2024 | 8 ha | 40 ha | 48 ha |
| 2025 | 14 ha | 33 ha | 47 ha |
What is causing deforestation around Petrópolis?
- Towns and roadscleared for good51% · 186 ha
- Wildfirescan grow back26% · 94 ha
- Farms, pasture and plantationscleared for good8.3% · 30 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
- 26,500 ha
- Forest in 2020
- 26,500 ha
- Overall change
- +5 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Petrópolis stayed about the same size, at about 26,500 hectares: new forest grew on about 85 hectares, and about 81 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 Petrópolis
Same 2 km radius, same index — so they compare directly.
- Magé21.7 km
Brazil
- Tree cover
- 62%
- Air quality
- 25
- Teresópolis22.8 km
Brazil
- Tree cover
- 59%
- Air quality
- 7
- Duque de Caxias34.1 km
Brazil
- Tree cover
- 17%
- Air quality
- 126
- São Gonçalo38.0 km
Brazil
- Tree cover
- 30%
- Air quality
- 31
- Nova Iguaçu39.8 km
Brazil
- Tree cover
- 33%
- Air quality
- 77
- Itaboraí42.2 km
Brazil
- Tree cover
- 45%
- Air quality
- 12
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Frequently asked
Questions about Petrópolis
What is the air quality (AQI) in Petrópolis right now?
The latest reading for Petrópolis shows an AQI of 14 (Good), observed Nov 11, 02:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 45 km, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Petrópolis 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 Petrópolis been like this week?
Over the last 7 days, the CAMS air-quality model put Petrópolis's daily AQI at 56 on average, from 46 on Nov 7 to an hourly peak of 97 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Petrópolis lost since 2001?
Since 2001, the area within 10 km of Petrópolis has lost about 362 hectares of forest (about 510 football pitches): 1.4% of the forest it had in 2000. Most of it (60%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Petrópolis stayed about the same size, at about 26,500 hectares: new forest grew on about 85 hectares, and about 81 hectares were lost.
What is the tree count in Petrópolis?
Petrópolis has an estimated 231,850 trees across the 12.57 km² measured — 73.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Petrópolis need?
Petrópolis has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Petrópolis'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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