UV Index
UV Index
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Today's UV index in Flagstaff, United States 
will be up to 6.1, indicating a high level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With Flagstaff's UV index reaching 6.1, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours between 10 a.m. and 4 p.m., when UV rays are strongest.
Flagstaff, Arizona's high elevation results in a moderate UV index, averaging 7-8 during the summer months, making it essential to be mindful of the sun's strength. The region's altitude contributes to a slightly lower UV index compared to other areas in Arizona.
Flagstaff experiences a semi-arid climate with four distinct seasons. Winters are cold and snowy, with average temperatures ranging from 20°F to 40°F (-7°C to 4°C). Spring and fall bring mild temperatures, while summers are warm with temperatures often reaching 80°F (27°C).
Compared to neighboring states and countries, Flagstaff's weather is more moderate due to its high elevation. The region's climate is distinct from the hot deserts of southern Arizona and differs from the more humid climates of New Mexico and northern Mexico.