Worst air pollution Patna, today and tomorrow
Today (22 September): Air quality in Patna is poor. AQI and PM1 are poor; PM2.5 and NO2 are moderate; PM10 is fair; O3, SO2, CO, and HCHO are good. Pollution peaks around 5:30 AM (PM1: 60.2/100).
Tomorrow (23 September 2026): Air quality in Patna is moderate. AQI improves to moderate; PM2.5 decreases to fair; PM10 decreases to good; NO2 decreases to fair; PM1 decreases to moderate; all other pollutants stay as today. Pollution peaks around 12:30 AM (PM1: 41.5/100). 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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Patna's air quality reflects the flat Bihar Ganga River plain at 53 metres, with vehicle traffic on surrounding expressways and the agricultural, brick kiln, and industrial corridor contributing elevated PM2.5. The dry winter northeast monsoon concentrates Bihar Gangetic Plain emissions extensively from October to March, while the flat alluvial terrain's minimal topographic dispersal maintains Patna among India's more persistently challenged Gangetic Plain provincial capital environments throughout the dry season months.
Today - 22 September | Pollution peaks at 05:30
AQI:
Poor
60.2/100
PM2.5 (fine particles):
Moderate
52.1/100
PM10 (coarse particles):
Fair
39.1/100
NO2 (nitrogen dioxide):
Moderate
57.3/100
O3 (ozone):
Good
17.6/100
SO2 (sulfur dioxide):
Good
15.8/100
CO (carbon monoxide):
Good
1.8/100
HCHO (formaldehyde):
Good
18.9/100
PM1 (ultrafine particles):
Poor
60.2/100
Levels show the poorest local air quality during the day
Tomorrow - 23 September | Pollution peaks at 00:30
AQI:
Moderate
41.5/100
PM2.5 (fine particles):
Fair
35.8/100
PM10 (coarse particles):
Good
17.9/100
NO2 (nitrogen dioxide):
Fair
39.5/100
O3 (ozone):
Good
13.7/100
SO2 (sulfur dioxide):
Good
11.7/100
CO (carbon monoxide):
Good
1.3/100
HCHO (formaldehyde):
Good
10.0/100
PM1 (ultrafine particles):
Moderate
41.5/100
Frequently Asked Questions
Is air quality bad in Patna right now?
On 22 September 2026, overall air quality in Patna is poor. AQI is the main air quality indicator at 60.2/100. Pollution peaks around 5:30 AM (PM1: 60.2/100).
Will air quality be worse tomorrow in Patna?
On 23 September 2026, air quality conditions in Patna will be better than today, with AQI forecast at moderate at 41.5/100. Pollution peaks around 12:30 AM (PM1: 41.5/100).
When is air pollution at its worst in Patna?
Air quality in Patna tends to be worse when road traffic, light manufacturing, as well as agricultural burning build up and dry spells bring strong winds. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Rains during the wetter months typically wash pollutants out of the air.
Are air quality levels in Patna 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: 22 September 2026 at 20:32 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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