Welcome to RainbowChase!

Download the PDF of Dr. Businger’s paper, “The Best Rainbows on Earth.”

RainbowChase is the only app available that provides guidance to bring more rainbows into your life.

The RainbowChase app is fully functional on the  Hawaiian Islands of Kaua‘i, O‘ahu, Maui, and the Island of Hawai‘i; the Western US; and Okinawa in Japan at this time.

In addition to helping you find rainbows, RainbowChase provides a wealth of weather data in the Nowcast screen.