Thunder Bay, Ontario
Low2.4
UV Index · Now
Step out.
You can step out without sun protection.
Unprotected
1 hr 23 min
until skin starts to burn.
With SPF 30
41 hr 40 min
Average unprotected skin. Lighter skin burns faster, darker skin slower.
HeatComfortable
Air
6°
Feels like
6°
Humidity
75%
Questions about Thunder Bay today
- What is the UV index in Thunder Bay right now?
- The UV index in Thunder Bay, Ontario is 2.4 — categorised as Low. You can step out without sun protection.
- Is it safe to go outside in Thunder Bay today?
- Yes — UV is low (2.4) in Thunder Bay right now. You can step out without sun protection.
- How long does it take to get sunburn in Thunder Bay?
- Average unprotected skin starts to burn in roughly 1 hr 23 min at the current UV index of 2.4 in Thunder Bay. SPF 30 multiplies that window by about 30×. Lighter skin burns faster; darker skin burns more slowly.
- What does the heat feel like in Thunder Bay today?
- Air temperature is 6°C with 75% humidity, giving a "feels like" reading of 6°C — comfortable.
- When is the safest time to step outside in Thunder Bay?
- 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 Thunder Bay, especially through summer.