Worst air pollution Parnaíba, today and tomorrow
Today (16 July): Air quality in Parnaíba is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (O3: 24.3/100).
Tomorrow (17 July 2026): Air quality in Parnaíba is fair. All pollutants stay as today. Pollution peaks around 8:00 PM (PM2.5: 23.7/100). 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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Parnaíba's air quality benefits from its position at the mouth of the Parnaíba river delta on the Piauí-Maranhão coast, with consistent Atlantic northeast trade winds providing some of northeastern Brazil's most reliable maritime ventilation across this unique river delta city. Vehicle emissions from the PI-116 and local fishing port operations are the primary sources, while the coastal position and consistent trade winds generally maintain Parnaíba among the more favourable air quality environments for a mid-sized northeastern Brazilian city throughout the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Fair
24.3/100
PM2.5 (fine particles):
Fair
20.1/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
24.3/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
8.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 20:00
AQI:
Fair
23.7/100
PM2.5 (fine particles):
Fair
23.7/100
PM10 (coarse particles):
Good
9.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
22.3/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
15.8/100
Pollen forecast in Parnaíba
View pollen forecastFrequently Asked Questions
Is air quality bad in Parnaíba right now?
On 16 July 2026, overall air quality in Parnaíba is fair. AQI is the main air quality indicator at 24.3/100. Pollution peaks around 12:00 AM (O3: 24.3/100).
Will air quality be worse tomorrow in Parnaíba?
On 17 July 2026, air quality conditions in Parnaíba will be similar to today, with AQI forecast at fair at 23.7/100. Pollution peaks around 8:00 PM (PM2.5: 23.7/100).
When is air pollution at its worst in Parnaíba?
The most noticeable dips in Parnaíba's air quality come when coconut palm and carnauba wax palm pollen peaks, or because of vehicle emissions from the PI-116 and local fishing port operations; outside of those periods, conditions here remain among the more favourable in the region.
Are air quality levels in Parnaíba 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