Smog emergency: Visibility drops to zero, AQI above 450; GRAP-3 enforced

GRAP-3 restrictions lifted after pollution levels improve in Delhi-NCR, construction work resumes

GRAP-3 kicks in: Delhi chokes under toxic air, strict restrictions slapped

Delhi air pollution: Air quality improves, GRAP-3 restrictions lifted

Delhi Chokes: AQI Crosses 400 in Some Areas, Residents Struggle with Bad Air