I thought I could get a ride in this morning before the smoke got real bad.Plan was to ride twelve miles into the north wind and turn around for a nice tailwind ride home.About 4.5 miles in,the wind kicked up and brought smoke in as bad as I have seen it. This is in northern Utah. Smoke is from California. I already had a high quality mask on. A cold front moved in a pushed the smoke even lower in the atmosphere . Looks like I am off the bike for a few days.People should not even be outside let alone exercise or work.