New Delhi (AFP) – New Delhi wakes up to toxic smog after Diwali revellers defied a firecracker ban and risked jail to celebrate the annual Hindu festival. According to international monitoring company IQAir, harmful PM 2.5 particles surged to 350 on the air quality index — more than three times the reading a day earlier. The reading for the particulates — so tiny they can penetrate deep into the lungs and enter the bloodstream — is more than 23 times the recommended daily maximum set by the World Health Organization.