Worst air pollution Aracaju, today and tomorrow
Today (16 July): Air quality in Aracaju is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 24.0/100).
Tomorrow (17 July 2026): Air quality in Aracaju is fair. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 AM (O3: 25.6/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Aracaju's air quality benefits from consistent Atlantic trade winds off the Sergipe coast that provide reliable ventilation across this compact northeastern Brazilian coastal capital. Vehicle emissions from the growing metropolitan area are the primary local source, while the coastal position and consistent onshore winds keep Aracaju's readings among the more favourable for major northeastern Brazilian cities throughout the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Fair
24.0/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
24.0/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
7.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 04:00
AQI:
Fair
25.6/100
PM2.5 (fine particles):
Fair
21.6/100
PM10 (coarse particles):
Good
8.8/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
25.6/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
12.1/100
Pollen forecast in Aracaju
View pollen forecastFrequently Asked Questions
Is air quality bad in Aracaju right now?
On 16 July 2026, overall air quality in Aracaju is fair. AQI is the main air quality indicator at 24.0/100. Pollution peaks around 11:00 PM (O3: 24.0/100).
Will air quality be worse tomorrow in Aracaju?
On 17 July 2026, air quality conditions in Aracaju will be similar to today, with AQI forecast at fair at 25.6/100. Pollution peaks around 4:00 AM (O3: 25.6/100).
When is air pollution at its worst in Aracaju?
Air quality dips in Aracaju mostly track coconut palm and mango pollen peaks and periods of vehicle emissions from the growing metropolitan area; otherwise, the area's setting generally supports clear, well-ventilated conditions.
Are air quality levels in Aracaju 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.
Want to see air quality forecasts for other cities in Brazil?
Check air quality in other popular cities:
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