Hawai'i's Kīlauea volcano erupted again on Tuesday, prompting National Park Service officials to warn visitors of potential air quality threats. The latest: The Big Island volcano, one of the most active in the world,

Kilauea last erupted in September with a series of short eruptions in a remote area of Hawaii Volcanoes National Park. Hours later, a third phase of eruptions began in the Nāpau Crater. In June, Kīlauea erupted in an area that had not seen lava since 1974.