Wie went to see a doctor after playing in 90-degree temperatures, a tournament official said.
"She didn't feel faint," press officer Olivia Payerne told The Associated Press. "This is nothing serious. She went to see a doctor and everything is fine. She will start (Thursday) as expected."
Wie tied for 23rd last year.
In 2006, Wie succumbed to heat exhaustion at the John Deere Classic in Silvis, Ill., and spent a few hours in a hospital.