Thanks for the suggestions everyone.
I ended up calling two fishing lodges that operate on the lake. Both said that the air is "a little hazy" but not too bad. The farthest Northwest portion of the park are closed due to fire proximity but the areas I want to be are still open. I guess it will have to be a game time decision!
Interestingly... the Ontario fire map website shows the fire is still burning and 2300 ha, however, this website
https://firesmoke.ca/forecasts/current/ seems to show no fire in that area.
While I have your attention - does anyone have any tips for finding the walleye this time of year? I have next-to-zero experience with walleye fishing and I would like to expand my experience with walleye eating as well