DermUV

Monthly UV Index

Salt Lake City, UT

Monthly UV Index in Salt Lake City, UT

Average UV in Salt Lake City is highest during May, Jun, Jul and lowest during Jan, Dec. Use this month-by-month guide to plan sunscreen, shade, clothing, and outdoor timing.

Salt Lake City UV Index by Month

Average UV in Salt Lake City peaks during May, Jun, Jul, when high sun angles combine with longer days. The deceptive months are usually early spring and early fall, when air temperatures stay mild but UV climbs into the high category by mid-morning. Locals often skip sunscreen on cool, overcast days, which is exactly when UV-A continues to drive long-term skin damage. UV in Salt Lake City is lowest during Jan, Dec.

MonthAvg UVRisk
Jan4.7Moderate
Feb6.3High
Mar8.3Very High
Apr10.3Very High
May11.5Extreme
Jun11.9Extreme
Jul11.8Extreme
Aug10.9Very High
Sep9.2Very High
Oct7.1High
Nov5.2Moderate
Dec4.3Moderate

Highest UV Months in Salt Lake City

Peak monthly UV reaches about 11.9 in May, Jun, Jul. That is the period when unprotected skin burns fastest, especially near solar noon. Check the live UV index in Salt Lake City, UT before outdoor plans because clouds, ozone, altitude, and reflection can move the real-time number above or below the monthly average.

Lowest UV Months in Salt Lake City

Monthly UV is lowest in Jan, Dec, around 4.3 on this model. Lower UV does not mean zero UV. UVA can still pass through cloud and glass, and snow, water, or pale concrete can reflect UV back onto exposed skin.

Monthly Sunscreen Guidance for Salt Lake City

For months that average UV 3 or higher, broad-spectrum SPF 30+, sunglasses, shade, and UPF clothing are the practical baseline. For months in the very-high or extreme range, reapply every two hours outdoors and after swimming or heavy sweat. These are educational estimates.

Related Salt Lake City UV Pages

Using UV Index Salt Lake City, UT in practice

UV strength on this page follows solar elevation, ozone thickness, cloud cover, altitude, and surface reflection. Snow can bounce back most of the UV that hits it, water and sand far less, but all of them add to the dose skin receives.

Burn-time figures come from minimal erythemal dose (MED) values published for each Fitzpatrick skin type, divided by the erythemal irradiance at a given UV index. Personal MED varies by roughly 20 percent, so treat every number as a planning range.

Reapplication matters more than the SPF number. Reapply roughly every two hours outdoors and immediately after swimming, heavy sweating, or towelling, regardless of what the bottle claims.

Cumulative dose drives photoaging and long-term skin damage more than any single day. Small daily exposures on commutes, walks, and driving add up across a season.

Plan outdoor blocks around the peak UV window, usually between 10am and 4pm local time. Shade, UPF fabric, a wide-brim hat, and UV-blocking sunglasses reduce dose more reliably than sunscreen alone.

UV scale reference

The WHO scale groups UV 1-2 as low, 3-5 as moderate, 6-7 as high, 8-10 as very high, and 11 or above as extreme. Protection is recommended from UV 3 upward, and shade during the middle of the day becomes the priority from UV 8 upward.

A practical routine at moderate-to-high UV is roughly one ounce of broad-spectrum sunscreen for full-body coverage, applied 15 minutes before going out, then reapplied on schedule. Clothing, hats, and shade carry the rest of the load, especially for children and anyone with a history of easy burning.

Keep exploring DermUV

These pages give more depth around uv index salt lake city, ut, from UV-scale reference material to calculators and city forecasts.

All figures on DermUV are educational estimates built from public UV data and published dose literature. They are not personal advice.