Worst air pollution São José, today and tomorrow
Today (16 July): Air quality in São José is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 PM (O3: 15.9/100).
Tomorrow (17 July 2026): Air quality in São José is good. All pollutants stay as today. Pollution peaks around 5:00 AM (O3: 16.0/100). 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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São José's air quality reflects its position in the greater Florianópolis metropolitan area on the Santa Catarina mainland opposite the island capital, with vehicle emissions from the BR-101 and the dense suburban character of this major mainland Florianópolis satellite city contributing elevated NOₓ and PM2.5. The Atlantic coastal proximity and prevailing southeasterly winds from Santa Catarina Bay generally provide background ventilation, while the metropolitan area's rapid growth is increasing the vehicle emission burden throughout the corridor.
Today - 16 July | Pollution peaks at 21:00
AQI:
Good
15.9/100
PM2.5 (fine particles):
Good
4.5/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
15.9/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
1.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 05:00
AQI:
Good
16.0/100
PM2.5 (fine particles):
Good
4.6/100
PM10 (coarse particles):
Good
2.1/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
16.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
0.9/100
Pollen forecast in São José
View pollen forecastFrequently Asked Questions
Is air quality bad in São José right now?
On 16 July 2026, overall air quality in São José is good. AQI is the main air quality indicator at 15.9/100. Pollution peaks around 9:00 PM (O3: 15.9/100).
Will air quality be worse tomorrow in São José?
On 17 July 2026, air quality conditions in São José will be similar to today, with AQI forecast at good at 16.0/100. Pollution peaks around 5:00 AM (O3: 16.0/100).
When is air pollution at its worst in São José?
In São José, reduced air quality is most noticeable when native Atlantic Forest remnants and introduced urban trees pollen peaks, and on days affected by vehicle emissions from the BR-101 and the dense suburban character of this major mainland Florianópolis satellite; wind and rain both help clear the air fairly quickly here.
Are air quality levels in São José 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