City report · Rio Grande do Sul, Brazil
Passo Fundo Air quality today
Air quality in Passo Fundo currently reads AQI 31 (Good): Air quality is satisfactory for everyone.
AQI 31
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 6.0
- tree cover
- 26.2%
- trees in this area
- 82.3K
- more trees needed
- 11.9K
Measured across a 2 km radius around Centro, Passo Fundo - RS, Brazil (12.57 km²), from a satellite image of Nov 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Passo Fundo · AQI 31 (Good)
Passo Fundo's tree count comes to 82,310 trees across 12.57 km², 4 points below the 30% tree-cover level considered healthy for this area, so roughly 11,938 more trees would close the gap.
Air quality detail
Air quality in Passo Fundo today: AQI 31, Good
Main pollutant: PM2.5 · Observed Nov 10, 11:00 local time via Open-Meteo / CAMS, US EPA index. Values in µg/m³.
Model estimate · no ground station nearby
Health signal
Air quality is satisfactory for everyone.
PM2.5
6.0
PM10
7.9
NO₂
0.8
O₃
66.0
SO₂
0.5
CO
107.0
- 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 Passo Fundo's daily AQI at 38 on average, from 26 on Nov 8 to an hourly peak of 69 on Nov 6.
Where Passo Fundo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Passo Fundo: Below target
26.2% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
82,310
Target trees
94,248
More trees needed
11,938
CO₂ if planted / yr
262.6 t
Deforestation · 2001–2025
How much forest has Passo Fundo lost?
Since 2001, the area within 10 km of Passo Fundo has lost about 794 hectares of forest (about 1,100 football pitches): 9.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 360 hectares (45%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from March 2017 of a 5 × 5 km area about 5 km south of the city center.
- Forest lost since 2001
- 794 haabout 1,100 football pitches
- Share of its forest
- 9.9%of what there was in 2000
- Cleared for good
- 360 hadeforestation: turned into farms, mines or towns
The worst year was 2003, when about 92 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 | 8 ha | 27 ha | 35 ha |
| 2002 | 10 ha | 7 ha | 18 ha |
| 2003 | 55 ha | 37 ha | 92 ha |
| 2004 | 25 ha | 17 ha | 42 ha |
| 2005 | 16 ha | 9 ha | 25 ha |
| 2006 | 28 ha | 40 ha | 68 ha |
| 2007 | 13 ha | 12 ha | 24 ha |
| 2008 | 14 ha | 22 ha | 36 ha |
| 2009 | 4 ha | 15 ha | 19 ha |
| 2010 | 6 ha | 8 ha | 14 ha |
| 2011 | 7 ha | 4 ha | 12 ha |
| 2012 | 28 ha | 18 ha | 46 ha |
| 2013 | 8 ha | 7 ha | 15 ha |
| 2014 | 42 ha | 8 ha | 50 ha |
| 2015 | 9 ha | 11 ha | 20 ha |
| 2016 | 13 ha | 16 ha | 28 ha |
| 2017 | 22 ha | 20 ha | 42 ha |
| 2018 | 5 ha | 18 ha | 23 ha |
| 2019 | 5 ha | 29 ha | 33 ha |
| 2020 | 2 ha | 17 ha | 19 ha |
| 2021 | 10 ha | 25 ha | 34 ha |
| 2022 | 13 ha | 17 ha | 29 ha |
| 2023 | 5 ha | 13 ha | 18 ha |
| 2024 | 4 ha | 11 ha | 15 ha |
| 2025 | 7 ha | 30 ha | 37 ha |
What is causing deforestation around Passo Fundo?
- Loggingcan grow back51% · 402 ha
- Farms, pasture and plantationscleared for good43% · 338 ha
- Towns and roadscleared for good2.8% · 22 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
- 7,850 ha
- Forest in 2020
- 7,840 ha
- Overall change
- −8 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Passo Fundo stayed about the same size, at about 7,840 hectares: new forest grew on about 499 hectares, and about 507 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 Passo Fundo
Same 2 km radius, same index — so they compare directly.
- Chapecó131.4 km
Brazil
- Tree cover
- 15%
- Air quality
- 43
- Bento Gonçalves133.0 km
Brazil
- Tree cover
- 40%
- Air quality
- 12
- Caxias do Sul156.4 km
Brazil
- Tree cover
- 18%
- Air quality
- 25
- Santa Cruz do Sul161.8 km
Brazil
- Tree cover
- 43%
- Air quality
- 24
- Novo Hamburgo200.5 km
Brazil
- Tree cover
- 31%
- Air quality
- 28
- São Leopoldo206.7 km
Brazil
- Tree cover
- 32%
- Air quality
- 26
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Frequently asked
Questions about Passo Fundo
What is the air quality (AQI) in Passo Fundo right now?
The latest reading for Passo Fundo shows an AQI of 31 (Good), observed Nov 10, 11:00 local time via Open-Meteo / CAMS, US EPA index. The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Passo Fundo today?
At AQI 31 (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 Passo Fundo been like this week?
Over the last 7 days, the CAMS air-quality model put Passo Fundo's daily AQI at 38 on average, from 26 on Nov 8 to an hourly peak of 69 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 Passo Fundo lost since 2001?
Since 2001, the area within 10 km of Passo Fundo has lost about 794 hectares of forest (about 1,100 football pitches): 9.9% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 360 hectares (45%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Passo Fundo stayed about the same size, at about 7,840 hectares: new forest grew on about 499 hectares, and about 507 hectares were lost.
What is the tree count in Passo Fundo?
Passo Fundo has an estimated 82,310 trees across the 12.57 km² measured — 26.2% tree cover, 4 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Passo Fundo need?
Passo Fundo needs roughly 11,938 more trees to close a 4-point shortfall against its 30% tree-cover target — about 262.6 t of extra CO₂ absorbed per year once grown.
How are Passo Fundo'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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