Decatur, Illinois

Low

0.8

UV Index · Now

Step out.

You can step out without sun protection.

Unprotected

4 hr 27 min

until skin starts to burn.

With SPF 30

133 hr 20 min

Average unprotected skin. Lighter skin burns faster, darker skin slower.

HeatComfortable

Air

15°

Feels like

15°

Humidity

75%

Questions about Decatur today

What is the UV index in Decatur right now?
The UV index in Decatur, Illinois is 0.8 — categorised as Low. You can step out without sun protection.
Is it safe to go outside in Decatur today?
Yes — UV is low (0.8) in Decatur right now. You can step out without sun protection.
How long does it take to get sunburn in Decatur?
Average unprotected skin starts to burn in roughly 4 hr 27 min at the current UV index of 0.8 in Decatur. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
What does the heat feel like in Decatur today?
Air temperature is 15°C with 75% humidity, giving a "feels like" reading of 15°C — comfortable.
When is the safest time to step outside in Decatur?
UV is highest between 11 am and 4 pm. Early mornings (before 9 am) and late afternoons (after 5 pm) are the safest windows for unprotected skin in Decatur, especially through summer.
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Data: Open-Meteo · Cities: GeoNames (CC-BY 4.0) · Updated Tue 2:00 PM · Refreshes every 30 minutes