How an El Niño winter could worsen pollution in Delhi

What happened: Delhi-NCR's air quality index rose to 244 the morning after Dusshera on October 21, the worst in 100 days, as the winter pollution season began. An El Niño expected to peak between November and January could worsen air quality. Key numbers: AQI 244 on October 21, worst in 100 days. Why it matters: El Niño is not a pollution source, but associated temperature and wind speed can affect how pollutants mix in the atmosphere and thus air quality, per the content.

Delhi-NCR's air quality index rose to 244 the morning after Dusshera on October 21, the worst in 100 days, as the winter pollution season began. An El Niño expected to peak between November and January could worsen air quality.

El Niño is not a pollution source, but associated temperature and wind speed can affect how pollutants mix in the atmosphere and thus air quality, per the content.