<span style="color: #222222;">Air quality in National Capital Delhi is in the 'poor' category this morning as the air quality index, AQI was recorded at 264 at 7 AM.</span><br />'' <span style="color: #222222;"> </span><br />'' <span style="color: #222222;">The city has been struggling with very poor air quality since the beginning of winter season. Spike in farm fires, calm winds and other local factors are among the reasons for deteriorating air quality in Delhi.</span><br />''  <br />