Worst air pollution Santa Inês, today and tomorrow
Today (16 July): Air quality in Santa Inês is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (O3: 22.1/100).
Tomorrow (17 July 2026): Air quality in Santa Inês is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 23.3/100). 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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Santa Inês' air quality reflects the Maranhão interior agricultural zone, with vehicle emissions from the BR-316 and surrounding babaçu palm, agricultural, and light industrial operations contributing local sources. Dry season burning from surrounding Maranhão Cerrado-Caatinga agricultural land contributes seasonal PM2.5 variation, while the flat Maranhão interior terrain generally allows reasonable wind dispersal on most days throughout the burning season.
Today - 16 July | Pollution peaks at 05:00
AQI:
Fair
22.1/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
22.1/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
4.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Fair
23.3/100
PM2.5 (fine particles):
Good
15.8/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
10.3/100
Pollen forecast in Santa Inês
View pollen forecastFrequently Asked Questions
Is air quality bad in Santa Inês right now?
On 16 July 2026, overall air quality in Santa Inês is fair. AQI is the main air quality indicator at 22.1/100. Pollution peaks around 5:00 AM (O3: 22.1/100).
Will air quality be worse tomorrow in Santa Inês?
On 17 July 2026, air quality conditions in Santa Inês will be similar to today, with AQI forecast at fair at 23.3/100. Pollution peaks around 11:00 PM (O3: 23.3/100).
When is air pollution at its worst in Santa Inês?
Air quality dips in Santa Inês mostly track babaçu palm and secondary vegetation pollen peaks and periods of vehicle emissions from the BR-316 and surrounding babaçu palm, agricultural, and light industrial operations; the rest of the calendar year is generally more forgiving for air quality.
Are air quality levels in Santa Inês 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