City report · São Paulo, Brazil
Santos Air quality today
Air quality in Santos currently reads AQI 28 (Good): Air quality is satisfactory for everyone.
AQI 28
Air quality right now
Good
- PM2.5, fine particles (µg/m³)
- 3.1
- tree cover
- 13.3%
- trees in this area
- 36.6K
- more trees needed
- 46.0K
Measured across a 2 km radius around Gonzaga, Santos - SP, Brazil (12.57 km²), from a satellite image of Nov 3, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Santos · AQI 28 (Good)
Santos's tree count comes to 36,644 trees across 11.02 km² of land, 17 points below the 30% tree-cover level considered healthy for this area, so roughly 46,011 more trees would close the gap.
Air quality detail
Air quality in Santos today: AQI 28, Good
Main pollutant: PM10 · Observed Nov 11, 12:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Cubatão-Centro, São Paulo, Brazil, 12.5 km away
Health signal
Air quality is satisfactory for everyone.
PM2.5
3.1
PM10
30.2
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 Santos's daily AQI at 56 on average, from 48 on Nov 8 to an hourly peak of 85 on Nov 5.
Where Santos stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Santos: Critically low
13.3% tree cover against a 30% healthy-neighborhood target, across 11.02 km² of land.
Trees in this area
36,644
Target trees
82,655
More trees needed
46,011
CO₂ if planted / yr
1,012 t
Deforestation · 2001–2025
How much forest has Santos lost?
Since 2001, the area within 10 km of Santos has lost about 160 hectares of forest (about 220 football pitches): 1.7% of the forest it had in 2000. Most of it (81%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 160 haabout 220 football pitches
- Share of its forest
- 1.7%of what there was in 2000
- Cleared for good
- 129 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 30 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 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | 4 ha | under 1 ha | 4 ha |
| 2005 | 7 ha | 1 ha | 8 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 8 ha | under 1 ha | 9 ha |
| 2008 | 1 ha | under 1 ha | 2 ha |
| 2009 | 7 ha | under 1 ha | 8 ha |
| 2010 | 17 ha | under 1 ha | 17 ha |
| 2011 | 1 ha | under 1 ha | 1 ha |
| 2012 | 6 ha | under 1 ha | 6 ha |
| 2013 | 3 ha | under 1 ha | 4 ha |
| 2014 | 29 ha | under 1 ha | 30 ha |
| 2015 | 6 ha | under 1 ha | 6 ha |
| 2016 | 4 ha | under 1 ha | 5 ha |
| 2017 | 5 ha | 2 ha | 7 ha |
| 2018 | under 1 ha | under 1 ha | 1 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 4 ha | under 1 ha | 5 ha |
| 2021 | 3 ha | under 1 ha | 3 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 2 ha | 4 ha | 5 ha |
| 2024 | 9 ha | 5 ha | 14 ha |
| 2025 | 4 ha | 13 ha | 16 ha |
What is causing deforestation around Santos?
- Towns and roadscleared for good54% · 86 ha
- Mining and energycleared for good26% · 42 ha
- Storms, floods and other natural causescan grow back7.4% · 12 ha
Also: farms, pasture and plantations, shifting farming, 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
- 9,790 ha
- Forest in 2020
- 10,000 ha
- Overall change
- +232 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Santos grew from about 9,790 hectares to 10,000 hectares, a net gain of about 232 hectares (+2.4%). New forest grew on about 435 hectares, while 203 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 Santos
Same 2 km radius, same index — so they compare directly.
- Mauá35.1 km
Brazil
- Tree cover
- 22%
- Air quality
- 46
- São Bernardo do Campo37.9 km
Brazil
- Tree cover
- 16%
- Air quality
- 40
- São Caetano do Sul43.6 km
Brazil
- Tree cover
- 12%
- Air quality
- 46
- Mogi das Cruzes50.9 km
Brazil
- Tree cover
- 17%
- Air quality
- 25
- Itanhaém52.4 km
Brazil
- Tree cover
- 45%
- Air quality
- 27
- Itaquaquecetuba52.8 km
Brazil
- Tree cover
- 17%
- Air quality
- 25
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Frequently asked
Questions about Santos
What is the air quality (AQI) in Santos right now?
The latest reading for Santos shows an AQI of 28 (Good), measured Nov 11, 12:00 local time by the Cubatão-Centro, São Paulo, Brazil ground monitoring station, 12.5 km away, via OpenAQ. The main pollutant is PM10. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Santos today?
At AQI 28 (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 Santos been like this week?
Over the last 7 days, the CAMS air-quality model put Santos's daily AQI at 56 on average, from 48 on Nov 8 to an hourly peak of 85 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 Santos lost since 2001?
Since 2001, the area within 10 km of Santos has lost about 160 hectares of forest (about 220 football pitches): 1.7% of the forest it had in 2000. Most of it (81%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Santos grew from about 9,790 hectares to 10,000 hectares, a net gain of about 232 hectares (+2.4%). New forest grew on about 435 hectares, while 203 hectares were lost.
What is the tree count in Santos?
Santos has an estimated 36,644 trees across the 11.02 km² of land measured — 13.3% tree cover, 17 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Santos need?
Santos needs roughly 46,011 more trees to close a 17-point shortfall against its 30% tree-cover target — about 1,012 t of extra CO₂ absorbed per year once grown.
How are Santos's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Gonzaga, 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 Gonzaga; the tree count is an estimate derived from that cover.
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