Worst air pollution Floriano, today and tomorrow
Today (16 July): Air quality in Floriano is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 23.6/100).
Tomorrow (17 July 2026): Air quality in Floriano is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 25.0/100). 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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Floriano's air quality reflects the Piauí Parnaíba river valley at the Piauí-Maranhão border, with vehicle emissions from the BR-343 and surrounding cattle, cotton, and agricultural operations contributing local sources. Dry season burning from surrounding Cerrado and Caatinga agricultural land contributes seasonal PM2.5 and PM10 variation, while the Parnaíba valley's channelling of winds provides some natural ventilation and the flat semi-arid terrain generally allows reasonable dispersal on most days throughout the year.
Today - 16 July | Pollution peaks at 04:00
AQI:
Fair
23.6/100
PM2.5 (fine particles):
Good
9.6/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
23.6/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
4.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Fair
25.0/100
PM2.5 (fine particles):
Good
14.2/100
PM10 (coarse particles):
Good
5.5/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
25.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
8.7/100
Pollen forecast in Floriano
View pollen forecastFrequently Asked Questions
Is air quality bad in Floriano right now?
On 16 July 2026, overall air quality in Floriano is fair. AQI is the main air quality indicator at 23.6/100. Pollution peaks around 4:00 AM (O3: 23.6/100).
Will air quality be worse tomorrow in Floriano?
On 17 July 2026, air quality conditions in Floriano will be similar to today, with AQI forecast at fair at 25.0/100. Pollution peaks around 11:00 PM (O3: 25.0/100).
When is air pollution at its worst in Floriano?
Floriano residents notice reduced air quality mainly when native cerrado trees and caatinga scrub pollen peaks, and during spells of vehicle emissions from the BR-343 and surrounding cattle, cotton, and agricultural operations; the picture usually improves again once the season turns.
Are air quality levels in Floriano 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