Las Vegas is heating up fast on Sunday, May 10, 2026, with clear skies and midday temperatures already in the mid-70s. Forecasters expect the valley to surge into the triple digits later today, with highs near 100°F, then jump to about 105°F on Monday and Tuesday as a strong ridge of high pressure parks over the Desert Southwest. Overnight lows will linger in the low-to-mid 70s, which means limited relief once the sun goes down.
Afternoon And Early-Week Outlook
Look for mostly sunny skies and light east-northeast breezes around 5-12 mph this afternoon, with a few higher gusts possible in open spots. The hottest stretch arrives Monday and Tuesday when afternoon readings peak near 105°F. Temperatures are expected to ease a bit by the end of the week, but they should still stay several degrees above normal for this time of year, according to the National Weather Service Las Vegas.
Heat Risk And Local Resources
The National Weather Service has expanded a Moderate HeatRisk across much of southern Nevada, with a Major HeatRisk extending into some lower desert valleys where impacts will be more intense. For anyone without reliable air conditioning, Clark County maintains a list of daytime cooling stations and other "Stay Cool" resources to help residents ride out the heat, according to Clark County.
How To Stay Safe
Limit outdoor exertion during the hottest hours, drink plenty of water, check in on older neighbors and people who are vulnerable, and never leave children or pets unattended in vehicles. If you have to be outside, shift work or exercise to early morning or evening, take frequent breaks in shade or air-conditioned areas, and rethink or reschedule heat-sensitive events so the weather does not do the planning for you.
