Delhi air quality worsens to ‘poor’ category

What happened: Delhi's air quality worsened to the "poor" level on Wednesday, with an average Air Quality Index of 230 recorded as of 8.15 am. Key numbers: Average AQI 230. 41 of 56 active monitoring stations recorded "poor" or worse. Pusa had the worst AQI at 318, the highest in Delhi since mid-July. Ghaziabad 222, Greater Noida 248, Noida 203, Gurugram 204, Faridabad 124. Why it matters: Air quality deteriorates sharply in Delhi during winter months, with stubble burning, vehicular pollution, Diwali firecrackers, falling temperatures and lower wind speeds contributing to the problem.

Delhi's air quality worsened to the "poor" level on Wednesday, with an average Air Quality Index of 230 recorded as of 8.15 am.

Air quality deteriorates sharply in Delhi during winter months, with stubble burning, vehicular pollution, Diwali firecrackers, falling temperatures and lower wind speeds contributing to the problem.