The event at Te Oranganui runs from 11am to 3pm on Friday, May 28, and is free to attend. Aside from information about smoking and the damage it does, there will be competitions, activities, prize giveaways and a sausage sizzle.
Whanganui health promoter Sonya Toleafoa said the theme for 2021 was "Fresh air is the best air".
"We want to promote the benefits of creating smoke-free environments for our whānau and particularly for our tamariki, and to shine a light on simple and effective steps we can all take to make places and spaces where we travel, live, learn and play, smoke-free," Toleafoa said.
"On May 31 we will be celebrating at Taihape Health from 9am-3pm and at Raetihi Community Centre, also from 9am-3pm."
Hika said Friday's event would be "a positive day for family and friends to come down and enjoy".
"You might not be a smoker, it could be Mum or Uncle. Just come down and get some information, learn a little bit, and make a decision from there.
"If you don't know that what you're doing is hurting yourself and your family, you will continue to do it."