Questions about O'Fallon today

What is the UV index in O'Fallon right now?

The UV index in O'Fallon, Missouri is 2.9 — categorised as Low. You can step out without sun protection.

Is it safe to go outside in O'Fallon today?

Yes — UV is low (2.9) in O'Fallon right now. You can step out without sun protection.

How long does it take to get sunburn in O'Fallon?

Average unprotected skin starts to burn in roughly 1 hr 10 min at the current UV index of 2.9 in O'Fallon. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.

What does the heat feel like in O'Fallon today?

Air temperature is 15°C with 74% humidity, giving a "feels like" reading of 15°C — comfortable.

When is the safest time to step outside in O'Fallon?

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 O'Fallon, especially through summer.