Miami sun exposure
Miami UV Index Today & Hourly Forecast
Forecast date: Thursday, August 20 · Current provider hour: Thu 7 PM ET
Current UV index
0.2
Low
UV exposure is limited for most people.
Today's forecast maximum
10.0
Very high UV exposure category
Highest upcoming sample
9.9
Fri 2 PM. The date label stays visible when the preview rolls into tomorrow.
What to plan for
At UV 3 or above, use shade, protective clothing, sunglasses and broad-spectrum sunscreen. Temperature and breeze do not reliably indicate ultraviolet exposure.
Upcoming preview
UV by forecast hour
Day and time shown in Miami
Thu 7 PM
0.2
Low
Fri 8 AM
0.4
Low
Fri 10 AM
3.7
Moderate
Fri 12 PM
8.9
Very high
Fri 2 PM
9.9
Very high
Fri 4 PM
4.9
Moderate
Fri 6 PM
1.0
Low
Sat 7 AM
0.0
Low
The provider preview samples upcoming daylight hours and may cross into the next calendar day after sunset. Today's maximum above comes from the provider's daily forecast.
Thursday, August 20
10.0
Forecast maximum · Very high
Friday, August 21
10.2
Forecast maximum · Very high
Saturday, August 22
10.6
Forecast maximum · Very high
UV is not heat
A cooler or cloudier-feeling hour can still have meaningful UV. Use this page for sun-exposure planning and check Miami's heat-index page separately for temperature and humidity burden.
Forecast limitations
Cloud cover, reflection, shade and exact location affect exposure. HeatGuard displays provider forecasts, not a personal UV dose or medical recommendation.