City report · Rio Grande do Sul, Brazil
São Leopoldo Air quality today
Air quality in São Leopoldo currently reads AQI 26 (Good): Air quality is satisfactory for everyone.
AQI 26
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 4.8
- tree cover
- 31.5%
- trees in this area
- 98.8K
- more trees needed
- 0
Measured across a 2 km radius around Centro, São Leopoldo - RS, 93020-190, Brazil (12.57 km²), from a satellite image of Nov 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
São Leopoldo · AQI 26 (Good)
São Leopoldo's tree count comes to 98,762 trees across 12.54 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in São Leopoldo today: AQI 26, Good
Main pollutant: PM2.5 · Observed Nov 10, 12:00 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
4.8
PM10
6.0
NO₂
0.9
O₃
79.0
SO₂
0.9
CO
90.0
- 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 São Leopoldo's daily AQI at 41 on average, from 30 on Nov 6 to an hourly peak of 65 on Nov 9.
Where São Leopoldo stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in São Leopoldo: Healthy tree cover
31.5% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
98,762
Target trees
98,762
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has São Leopoldo lost?
Since 2001, the area within 10 km of São Leopoldo has lost about 1,770 hectares of forest (about 2,500 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 865 hectares (49%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from March 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 1,770 haabout 2,500 football pitches
- Share of its forest
- 14%of what there was in 2000
- Cleared for good
- 865 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 81 hectares a year in 2016–2020. The worst year was 2012, when about 162 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 | 21 ha | 26 ha | 47 ha |
| 2002 | 61 ha | 17 ha | 78 ha |
| 2003 | 30 ha | 12 ha | 42 ha |
| 2004 | 35 ha | 27 ha | 62 ha |
| 2005 | 54 ha | 57 ha | 110 ha |
| 2006 | 28 ha | 64 ha | 93 ha |
| 2007 | 25 ha | 17 ha | 43 ha |
| 2008 | 45 ha | 16 ha | 61 ha |
| 2009 | 56 ha | 9 ha | 65 ha |
| 2010 | 44 ha | 14 ha | 58 ha |
| 2011 | 24 ha | 27 ha | 50 ha |
| 2012 | 51 ha | 111 ha | 162 ha |
| 2013 | 23 ha | 77 ha | 100 ha |
| 2014 | 37 ha | 71 ha | 108 ha |
| 2015 | 35 ha | 10 ha | 45 ha |
| 2016 | 48 ha | 8 ha | 55 ha |
| 2017 | 46 ha | 53 ha | 99 ha |
| 2018 | 14 ha | 66 ha | 80 ha |
| 2019 | 20 ha | 53 ha | 73 ha |
| 2020 | 22 ha | 78 ha | 100 ha |
| 2021 | 29 ha | 17 ha | 46 ha |
| 2022 | 20 ha | 14 ha | 35 ha |
| 2023 | 22 ha | 16 ha | 38 ha |
| 2024 | 39 ha | 19 ha | 58 ha |
| 2025 | 36 ha | 30 ha | 66 ha |
What is causing deforestation around São Leopoldo?
- Loggingcan grow back50% · 892 ha
- Towns and roadscleared for good28% · 488 ha
- Farms, pasture and plantationscleared for good21% · 377 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
- 9,410 ha
- Forest in 2020
- 8,800 ha
- Overall change
- −607 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around São Leopoldo shrank from about 9,410 hectares to 8,800 hectares, a net loss of about 607 hectares (−6.5%). New forest grew on about 508 hectares, but 1,120 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 São Leopoldo
Same 2 km radius, same index — so they compare directly.
- Canoas17.9 km
Brazil
- Tree cover
- 20%
- Air quality
- 49
- Gravataí25.1 km
Brazil
- Tree cover
- 42%
- Air quality
- 42
- Alvorada27.5 km
Brazil
- Tree cover
- 22%
- Air quality
- 56
- Porto Alegre31.3 km
Brazil
- Tree cover
- 22%
- Air quality
- 44
- Viamão37.6 km
Brazil
- Tree cover
- 58%
- Air quality
- 38
- Caxias do Sul65.9 km
Brazil
- Tree cover
- 18%
- Air quality
- 25
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Frequently asked
Questions about São Leopoldo
What is the air quality (AQI) in São Leopoldo right now?
The latest reading for São Leopoldo shows an AQI of 26 (Good), observed Nov 10, 12:00 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 São Leopoldo today?
At AQI 26 (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 São Leopoldo been like this week?
Over the last 7 days, the CAMS air-quality model put São Leopoldo's daily AQI at 41 on average, from 30 on Nov 6 to an hourly peak of 65 on Nov 9. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around São Leopoldo lost since 2001?
Since 2001, the area within 10 km of São Leopoldo has lost about 1,770 hectares of forest (about 2,500 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 865 hectares (49%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 49 hectares a year in 2021–2025, down from 81 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around São Leopoldo shrank from about 9,410 hectares to 8,800 hectares, a net loss of about 607 hectares (−6.5%). New forest grew on about 508 hectares, but 1,120 hectares were lost.
What is the tree count in São Leopoldo?
São Leopoldo has an estimated 98,762 trees across the 12.54 km² of land measured — 31.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does São Leopoldo need?
São Leopoldo has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are São Leopoldo'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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