Worst air pollution Açailandia, today and tomorrow
Today (30 August): Air quality in Açailandia is moderate. AQI, PM2.5, and PM1 are moderate; PM10 and O3 are fair; NO2, SO2, CO, and HCHO are good. Pollution peaks around 1:00 AM (PM2.5: 43.2/100).
Tomorrow (31 August 2026): Air quality in Açailandia is fair. AQI improves to fair; PM2.5 decreases to fair; PM10 decreases to good; O3 decreases to good; PM1 decreases to fair; all other pollutants stay as today. Pollution peaks around 3:00 AM (PM2.5: 38.6/100). Airmine updates local air quality forecasts four times daily.
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Açailândia's air quality faces significant industrial challenges as a major Maranhão steel and pig iron production hub, with the Gusa Nordeste and surrounding pig iron furnaces generating elevated PM2.5, CO, and heavy metals from charcoal-fired blast furnaces alongside dry season burning from surrounding Amazon deforestation. The flat Maranhão-Pará border terrain and calm dry season conditions allow both industrial and fire smoke to accumulate extensively.
Today - 30 August | Pollution peaks at 01:00
AQI:
Moderate
43.2/100
PM2.5 (fine particles):
Moderate
43.2/100
PM10 (coarse particles):
Fair
20.1/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
26.8/100
SO2 (sulfur dioxide):
Good
4.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Moderate
41.0/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 03:00
AQI:
Fair
38.6/100
PM2.5 (fine particles):
Fair
38.6/100
PM10 (coarse particles):
Good
15.9/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
4.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Fair
25.9/100
Pollen forecast in Açailandia
View pollen forecastFrequently Asked Questions
Is air quality bad in Açailandia right now?
On 30 August 2026, overall air quality in Açailandia is moderate. AQI is the main air quality indicator at 43.2/100. Pollution peaks around 1:00 AM (PM2.5: 43.2/100).
Will air quality be worse tomorrow in Açailandia?
On 31 August 2026, air quality conditions in Açailandia will be better than today, with AQI forecast at fair at 38.6/100. Pollution peaks around 3:00 AM (PM2.5: 38.6/100).
When is air pollution at its worst in Açailandia?
In Açailandia, reduced air quality is most noticeable when native cerrado trees and eucalyptus pollen peaks, and on days affected by the Gusa Nordeste and surrounding pig iron furnaces; conditions usually ease once the wet season or windier weather returns.
Are air quality levels in Açailandia 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.
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Data provided by Airmine — Last update: 30 August 2026 at 20:26 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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