National Weather Service United States Department of Commerce

Observed max temperatures and lowest humidity Monday across northeast Minnesota and northwest Wisconsin (values are preliminary). Critical fire weather will continue Tuesday across far northern MN. Dangerous heat will continue through Tuesday across northeast MN and northwest WI.
Another round of dangerous heat is expected today with highs in the mid to high 90s across the region. Temperatures moderate slightly after today with slightly lower dewpoints, but some Heat Advisories may be needed, most likely for areas from the Brainerd Lakes to I-35 corridor and into NW WI.
Critical fire weather is expected again today across portions of the Borderlands and BWCA, where a Red Flag Warning is in effect. Low relative humidity, very hot temperatures, and a west to northwest wind will combine with very dry fuels. These conditions could lead to the rapid spread of wildfires. Near-critical fire weather conditions may be possible Wednesday due to low relative humidity.
An air quality alert has been issued due to wildfire smoke for Tuesday, July 14, through Thursday, July 16, for northeast Minnesota. Air quality is expected to reach the purple AQI category, which is unhealthy for everyone. You can find more information about this alert here: https://www.pca.state.mn.us/news-and-stories/air-quality-alert-issued-due-to-wildfire-smoke-for-tuesday-july-14-through-thursday-july-16-for