City report · São Paulo, Brazil
Guarulhos Air quality today
Air quality in Guarulhos currently reads AQI 13 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 13
Good
- PM2.5, fine particles (µg/m³)
- 2.2
- tree cover
- 12.0%
- trees in this area
- 37.7K
- more trees needed
- 56.5K
Measured across a 2 km radius around Vila Hulda, Guarulhos - SP, Brazil (12.57 km²), from a satellite image of Sep 27, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Guarulhos · AQI 13 (Good)
Guarulhos's tree count comes to 37,699 trees across 12.57 km², 18 points below the 30% tree-cover level considered healthy for this area, so roughly 56,549 more trees would close the gap.
Air quality detail
Air quality in Guarulhos today: AQI 13, Good
Main pollutant: PM10 · Observed Nov 11, 11:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Guarulhos-Paço Municipal, São Paulo, Brazil, 1.7 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
2.2
PM10
14.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, CETESB - Companhia Ambiental do Estado de São Paulo
- 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 Guarulhos's daily AQI at 60 on average, from 39 on Nov 8 to an hourly peak of 113 on Nov 6.
Where Guarulhos stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Guarulhos: Critically low
12.0% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
37,699
Target trees
94,248
More trees needed
56,549
CO₂ if planted / yr
1,244 t
Deforestation · 2001–2025
How much forest has Guarulhos lost?
Since 2001, the area within 10 km of Guarulhos has lost about 414 hectares of forest (about 580 football pitches): 6.6% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from July 2018 of a 5 × 5 km area about 6 km northwest of the city center.
- Forest lost since 2001
- 414 haabout 580 football pitches
- Share of its forest
- 6.6%of what there was in 2000
- Cleared for good
- 405 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 82 hectares of forest were lost.
Guarulhos's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 13 ha | under 1 ha | 13 ha |
| 2002 | 5 ha | under 1 ha | 6 ha |
| 2003 | 6 ha | under 1 ha | 7 ha |
| 2004 | 4 ha | under 1 ha | 4 ha |
| 2005 | 6 ha | under 1 ha | 6 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 32 ha | under 1 ha | 33 ha |
| 2008 | 4 ha | under 1 ha | 4 ha |
| 2009 | 10 ha | under 1 ha | 10 ha |
| 2010 | 3 ha | under 1 ha | 4 ha |
| 2011 | 8 ha | under 1 ha | 8 ha |
| 2012 | 12 ha | under 1 ha | 12 ha |
| 2013 | 38 ha | under 1 ha | 39 ha |
| 2014 | 82 ha | under 1 ha | 82 ha |
| 2015 | 26 ha | under 1 ha | 26 ha |
| 2016 | 23 ha | under 1 ha | 23 ha |
| 2017 | 45 ha | under 1 ha | 46 ha |
| 2018 | 12 ha | under 1 ha | 12 ha |
| 2019 | 9 ha | under 1 ha | 9 ha |
| 2020 | 2 ha | under 1 ha | 3 ha |
| 2021 | 14 ha | under 1 ha | 14 ha |
| 2022 | 10 ha | under 1 ha | 10 ha |
| 2023 | 12 ha | under 1 ha | 13 ha |
| 2024 | 8 ha | under 1 ha | 9 ha |
| 2025 | 20 ha | 2 ha | 22 ha |
What is causing deforestation around Guarulhos?
- Towns and roadscleared for good87% · 359 ha
- Mining and energycleared for good6.6% · 27 ha
- Farms, pasture and plantationscleared for good4.4% · 18 ha
Also: 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
- 7,560 ha
- Forest in 2020
- 7,830 ha
- Overall change
- +261 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Guarulhos grew from about 7,560 hectares to 7,830 hectares, a net gain of about 261 hectares (+3.5%). New forest grew on about 563 hectares, while 303 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 Guarulhos
Same 2 km radius, same index — so they compare directly.
- São Paulo14.1 km
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- 11%
- Air quality
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- Mairiporã16.9 km
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- Air quality
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- São Caetano do Sul17.9 km
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- Air quality
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- Itaquaquecetuba19.0 km
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- 17%
- Air quality
- 20
- Caieiras23.8 km
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- Tree cover
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- Air quality
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- Mauá23.9 km
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- Tree cover
- 22%
- Air quality
- 51
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Frequently asked
Questions about Guarulhos
What is the air quality (AQI) in Guarulhos right now?
The latest reading for Guarulhos shows an AQI of 13 (Good), measured Nov 11, 11:00 local time by the Guarulhos-Paço Municipal, São Paulo, Brazil ground monitoring station, 1.7 km away, via OpenAQ. The main pollutant is PM10. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Guarulhos today?
At AQI 13 (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 Guarulhos been like this week?
Over the last 7 days, the CAMS air-quality model put Guarulhos's daily AQI at 60 on average, from 39 on Nov 8 to an hourly peak of 113 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 Guarulhos lost since 2001?
Since 2001, the area within 10 km of Guarulhos has lost about 414 hectares of forest (about 580 football pitches): 6.6% of the forest it had in 2000. Most of it (98%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Guarulhos grew from about 7,560 hectares to 7,830 hectares, a net gain of about 261 hectares (+3.5%). New forest grew on about 563 hectares, while 303 hectares were lost.
What is the tree count in Guarulhos?
Guarulhos has an estimated 37,699 trees across the 12.57 km² measured — 12.0% tree cover, 18 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Guarulhos need?
Guarulhos needs roughly 56,549 more trees to close a 18-point shortfall against its 30% tree-cover target — about 1,244 t of extra CO₂ absorbed per year once grown.
How are Guarulhos's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Vila Hulda, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. 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 Vila Hulda; the tree count is an estimate derived from that cover.
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