As of 1:08 PM MST on August 3, 2025, all 43 cities in Maricopa County, AZ in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is New River, AZ with a reading of 11.8.
Over the next 24 hours, the highest UV Index reading in Maricopa County, AZ is expected to be 11.8 in New River between 1:00 PM - 2:00 PM MST today.
Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
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Color | |||||
Risk | Low | Moderate | High | Very High | Extreme |