Delhi had clean spring air - but it won't last
![](http://admin.indiaenvironmentportal.org.in/files/Air-Pollutio.jpg)
Stagnant air explains why pollutants accumulate throughout the workweek in winter, and why spring sees more variation within days
Publication Date:
19/10/2015
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Stagnant air explains why pollutants accumulate throughout the workweek in winter, and why spring sees more variation within days