Delhi facing worst smog in 17 years: Centre for Science and Environment
![](http://admin.indiaenvironmentportal.org.in/files/air_polltuion_abad_8.jpg)
According to air quality monitoring network SAFAR, PM2.5 levels are in severe category and are expected to remain in this category for more than three days, it said.
Publication Date:
04/11/2016