Worst air pollution Guwāhāti, today and tomorrow
Today (9 August): Air quality in Guwāhāti is fair. AQI, PM2.5, NO2, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 11:30 PM (PM1: 34.6/100).
Tomorrow (10 August 2026): Air quality in Guwāhāti is fair. All pollutants stay as today. Pollution peaks around 2:30 PM (O3: 36.7/100). 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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Guwāhāti's air quality reflects the Brahmaputra River valley's flat alluvial plain at 55 metres surrounded by the Assam Hills and the Meghalaya Plateau, with vehicle traffic on surrounding roads and the oil refinery, tea, and construction corridor contributing local sources. The monsoon provides effective wet season cleansing, while the dry winter northeast monsoon and biomass burning from surrounding northeastern Indian forests generate seasonal PM2.5 elevation and the valley's topographic enclosure creates concentration under calm winter conditions throughout the year.
Today - 9 August | Pollution peaks at 23:30
AQI:
Fair
34.6/100
PM2.5 (fine particles):
Fair
27.2/100
PM10 (coarse particles):
Good
7.5/100
NO2 (nitrogen dioxide):
Fair
30.4/100
O3 (ozone):
Fair
25.4/100
SO2 (sulfur dioxide):
Good
7.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.5/100
PM1 (ultrafine particles):
Fair
34.6/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 14:30
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Fair
26.3/100
PM10 (coarse particles):
Good
7.2/100
NO2 (nitrogen dioxide):
Fair
29.6/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
5.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.2/100
PM1 (ultrafine particles):
Fair
33.5/100
Frequently Asked Questions
Is air quality bad in Guwāhāti right now?
On 9 August 2026, overall air quality in Guwāhāti is fair. AQI is the main air quality indicator at 34.6/100. Pollution peaks around 11:30 PM (PM1: 34.6/100).
Will air quality be worse tomorrow in Guwāhāti?
On 10 August 2026, air quality conditions in Guwāhāti will be similar to today, with AQI forecast at fair at 36.7/100. Pollution peaks around 2:30 PM (O3: 36.7/100).
When is air pollution at its worst in Guwāhāti?
Guwāhāti usually sees its poorest air quality when vehicle traffic, heavy industrial and chemical processing, as well as construction activity coincide with periods when the monsoon rains ease off. Rainfall through the monsoon usually keeps levels in check. The driest months of the year tend to see the highest readings.
Are air quality levels in Guwāhāti 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: 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.
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