Clean, fresh air can be part of the draw for tourists to Canada's North — but they won't find it this week in Yellowknife due to wildfire smoke.

Environment and Climate Change Canada (ECCC) has issued heat warnings for Yellowknife and many communities in the South Slave, Sahtu and Beaufort Delta regions — where day time temperatures near 30 C and overnight lows near 20 C are expected in the coming days. People are urged to seek out air conditioned spaces to seek relief.

Shane Thompson, the N.W.T.'s minister of Environment and Climate Change as well as Municipal and Community Affairs, gave an update on the out-of-control wildfire burning near Hay River and the Kátł'odeeche First Nation since Sunday.

This is Hay River's warmest May 3 in 125 years. The previous record high was set in 1898.Temperatures in the community reached 30 C, three degrees warmer than the previous record high for the day. Overall, the southwestern N.W.T. is experiencing an abnormally warm spring. "We're talking, eight to up to 20 degrees above normal," said Jesse Wagar, a meteorologist with Environment and Climate Change Canada.

Environment Canada has issued air quality statements for parts of the N.W.T.'s Mackenzie Delta region, including Fort McPherson and Tsiigehtchic.

Lutselk'e, N.W.T. is one of several communities in the Northwest Territories that has been blanketed by smoke over the past few days thanks to strong south winds blowing smoke up north from fires burning south of Great Slave Lake.