Worst air pollution Santos, today and tomorrow
Today (16 July): Air quality in Santos is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 15.5/100).
Tomorrow (17 July 2026): Air quality in Santos is good. All pollutants stay as today. Pollution peaks around 8:00 PM (O3: 16.3/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Santos' air quality reflects its position as Brazil's busiest port city, with container shipping, petroleum terminal, and heavy goods vehicle traffic on the Via Anchieta generating elevated SO₂, NOₓ and diesel PM2.5. The Atlantic sea breezes generally provide coastal ventilation, but the Serra do Mar escarpment immediately inland creates topographic enclosure that can trap port and industrial emissions across the low-lying Santos Bay estuary under calm conditions.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
15.5/100
PM2.5 (fine particles):
Good
4.4/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
15.5/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
0.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 20:00
AQI:
Good
16.3/100
PM2.5 (fine particles):
Good
5.3/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
16.3/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.0/100
Pollen forecast in Santos
View pollen forecastFrequently Asked Questions
Is air quality bad in Santos right now?
On 16 July 2026, overall air quality in Santos is good. AQI is the main air quality indicator at 15.5/100. Pollution peaks around 11:00 PM (O3: 15.5/100).
Will air quality be worse tomorrow in Santos?
On 17 July 2026, air quality conditions in Santos will be similar to today, with AQI forecast at good at 16.3/100. Pollution peaks around 8:00 PM (O3: 16.3/100).
When is air pollution at its worst in Santos?
The most noticeable dips in Santos's air quality come when restinga coastal vegetation and mangrove pollen peaks, or because of container shipping, petroleum terminal, and heavy goods vehicle traffic on the Via Anchieta; the rest of the year typically brings clearer, more consistent conditions.
Are air quality levels in Santos based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app