Smoke from a massive wildfire in Canada settled in the Powell area today, but rain is expected to soon clear the air.

“The rain should wash out a lot of the smoke,” said Dave Lipson, meteorologist with the National Weather Service in Riverton. “Unfortunately, the least amount of rain is going to fall in the Big Horn Basin — that’s where a lot of the smoke is.”

Rainfall is forecast for the area beginning later today and into the weekend, which should help clear the smoke as early as this evening, Lipson said.

“We’re going to continue to have that smoke through most the day, and it’s going to take the rain coming from the southwest to wash out the skies,” he said.

Most of the smoke is coming from Alberta, north of Edmonton, Lipson said.

The fire grew to 330 square miles as of Thursday, according to the Associated Press. That's an area roughly the size of Calgary, Alberta's largest city, the AP reported.

The Weather Service is confident that the Canadian fire is responsible for the local smoke.

“There doesn’t seem to be anything else going on that would contribute that much smoke to northern Wyoming,” Lipson said.

The smoke created limited visibility in the area. At around 11 a.m., visibility in the Powell area was around 5 miles, and Cody’s was 4 miles.

A map of the smoke forecasts can be seen at http://firesmoke.ca/forecasts/viewer/run/ops/BSC00WC04/current/.