I arrived Jolly Grant Airport, Dehradun at around 3.45 PM. It was slightly drizzling but all together weather was pleasent. A taxi took me through Rajaji National park for around 1 hour to reach the yoganagiri Rishikesh. It was hot and humid at Rishikesh. I spend a quiet evening marvelling at the beautiful Shiva statue. Ganges seemed turbulent and had so many swirls. Water was also ice cold.
You can either stay at Rishikesh or Haridwar as per your interest. Road transport is available either way. To avoid an extra journey of 20 km I stayed the night near Tapovan in Rishikesh. UTC buses have a stop here usually, but it's better to enquire beforehand.