Much of Iowa’s eastern third is under a Heat Advisory today as the heat index, a ratio of the temperature and humidity, may reach 104. At least four cities statewide had air temperatures in triple-digits Monday and more may reach 100, or hotter, today.

Roger Vachalek, a meteorologist at the National Weather Service, says it’ll be a second straight day of steamy sailing. Highs statewide will again be in the mid- to upper-90s across Iowa, while a stronger breeze is expected. A Wind Advisory is in effect for a large portion of northwest Iowa.

Winds will be blowing at 15 to 25 miles an hour but may gust to 45. Vachalek says a change is coming very soon.

A cold front should arrive tomorrow afternoon that will drop temperatures significantly, with highs only in the 70s on Friday through Sunday. Atlantic had Monday’s the hot spot in Iowa with 102 degrees, while Mason City set a record with 98 degrees, breaking a record that had stood since 1933.

By Pat Powers, KQWC, Webster City