Bihar Air Quality
Capital: Patna · Population: 130M · 18 monitoring stations
210
Poor
2024 Annual Avg
210
Annual AQI
Rank #3 in India
88 μg/m³
PM2.5
18× WHO limit
370
Winter Peak
Oct–Feb average
85
Summer Low
Jul–Sep average
Health Advisory — Poor
Poor air quality. Sensitive groups must avoid outdoor activity. Others should reduce prolonged exertion.
Major Cities in Bihar
Live AQI updated every 30 minutes from WAQI. 2024 Avg from CPCB annual data.
Air Quality in Bihar
Bihar sits in the eastern Indo-Gangetic Plain where stagnant winter air traps pollutants. Patna and Muzaffarpur consistently rank among India's worst. Widespread biomass and crop residue burning drive PM2.5.
Main Pollution Sources
Seasonal AQI Patterns in Bihar
Worst season. Temperature inversions, crop burning, and low wind speeds trap pollutants. AQI often exceeds 300 in northern states.
Dust storms and heat raise AQI. Less fog than winter. Industrial activity at peak.
Best air quality of the year. Rain washes out PM2.5 and PM10. AQI typically falls to lowest levels.
Rapidly deteriorating. Crop stubble burning begins in northern states. AQI transitions from good to dangerous.