Worst air pollution Picos, today and tomorrow
Today (9 August): Air quality in Picos is fair. PM10 and O3 are fair; AQI and PM2.5 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (PM2.5: 40.7/100).
Tomorrow (10 August 2026): Air quality in Picos is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (PM2.5: 41.8/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Picos' air quality reflects the Piauí semi-arid interior Sertão, with vehicle emissions from the BR-316 and surrounding livestock farming and light manufacturing contributing local sources. Drought conditions and Caatinga burning contribute seasonal PM10 elevation, while the Gurguéia river valley provides limited ventilation corridors and the flat semi-arid terrain generally allows reasonable wind dispersal on most days throughout the year.
Today - 9 August | Pollution peaks at 18:00
AQI:
Medium
40.7/100
PM2.5 (fine particles):
Medium
40.7/100
PM10 (coarse particles):
Fair
20.6/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
20.6/100
SO2 (sulfur dioxide):
Good
5.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
8.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 15:00
AQI:
Medium
41.8/100
PM2.5 (fine particles):
Medium
41.8/100
PM10 (coarse particles):
Fair
21.5/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
20.9/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
19.7/100
Pollen forecast in Picos
View pollen forecastFrequently Asked Questions
Is air quality bad in Picos right now?
On 9 August 2026, overall air quality in Picos is fair. O3 is the main pollutant at 20.6/100. Pollution peaks around 6:00 PM (PM2.5: 40.7/100).
Will air quality be worse tomorrow in Picos?
On 10 August 2026, air quality conditions in Picos will be similar to today, with PM10 forecast at fair at 21.5/100. Pollution peaks around 3:00 PM (PM2.5: 41.8/100).
When is air pollution at its worst in Picos?
The most noticeable dips in Picos's air quality come when native cerrado trees and sparse drought-adapted vegetation pollen peaks, or because of vehicle emissions from the BR-316 and surrounding livestock farming and light manufacturing; the picture usually improves again once the season turns.
Are air quality levels in Picos 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Want to see air quality forecasts for other cities in Brazil?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.