Uttrakhand Environment Protection Pollution Control Board (UEPPCB), Dehradun has awarded a project on Action Plan for ambient Air Quality Improvement of Dehradun City to Pollution Control Research Institute, BHEL Haridwar, as Dehradun is an important tourist place because of pilgrimage due to holy Ganga River. It was found that there is no ambient air quality checking facilities/data available at Dehradun. At most of places the Suspended Particulate matter was more than the prescribed standard limits due to vehicular movement & their emissions of the existing and floating vehicles in Dehradun. This problem is due to existing & floating vehicle density at Dehradun.