There are lot of wildfires on going in Mexico today and for the past few days. The red marks show where the fires are and the brown represents the smoke in the upper levels of the atmosphere.
One of the parameters of the map below is the wind direction and speed. This is roughly at an elevation of 10,000 ft. Notice the wind is north out of Mexico and then turns northeast towards Iowa. The smoke that gets lifted high enough into the atmosphere will “ride” the wind northward.
The map below shows the concentration of the smoke expected in the upper levels of the atmosphere Friday afternoon. The smoke is expected to be thicker in Texas and Oklahoma but there is some that might make it as far north as Iowa.
Lots of clouds are expected here in Iowa Friday. If there was any sunshine it might look milky white. You would not smell it and have no impact on us here at the ground. Now if it remains cloudy all day you wouldn’t notice any smoke if it was to make it this far north.