Delhi air quality fell to 78 following record rain and winter chill.
Context
What happened: Delhi's air quality dropped to 78 after record rain brought winter chill, according to the IMD.
Key numbers: Air quality index at 78; partly cloudy skies expected on October 31 and November 1.
Why it matters: The IMD expects weather over Delhi-NCR to gradually turn drier, followed by clearer conditions.