Heat stress in Henderson
Searing Mojave Desert heat on the Las Vegas Valley's rim — intense sun and parched air drive extreme summer afternoons.
Limit outdoor exertion. Drink water every 15 minutes and rest in shade.
Live wet-bulb globe temperature via the Liljegren (2008) method · automatically refreshed about every 30 minutes.
View Henderson on the live mapModerate acclimatized work: ~45 min work / 15 min rest, tightening toward ~30/30 near 30 °C. Unacclimatized or heavy work should stop routine work in this band.
Screening guidance from ACGIH TLV, GHSA/KSI/NATA, and TB MED 507. WBGT is a composite index, not air temperature. These are acclimatized-population defaults — the unacclimatized, older, ill, or those on certain medications are at higher risk. Not a substitute for a required on-site WBGT reading or your employer / league / command policy.
Reading heat stress in Henderson
Wet-bulb globe temperature (WBGT) is the heat measure that actually tracks danger to the body. Unlike the plain air temperature on your phone, it folds in humidity, wind, and direct sun — the factors that decide whether your sweat can still cool you. It’s the standard the military, athletic associations, and occupational-safety bodies use to call when outdoor activity is no longer safe.
That matters in Henderson because searing Mojave Desert heat on the Las Vegas Valley's rim — intense sun and parched air drive extreme summer afternoons. The number above is the live outdoor WBGT for the city right now; tap through to the live map to inspect any neighborhood, scrub the forecast hour by hour, and see the 7-day outlook.
Heat in Henderson: common questions
What is the WBGT in Henderson right now?
Right now it's about 84°F WBGT (high heat stress). This page shows the live wet-bulb globe temperature for Henderson, Nevada, refreshed automatically about every 30 minutes. Open the live map for an exact reading at your neighborhood and an hour-by-hour forecast.
Why is WBGT more useful than the temperature for Henderson?
Air temperature ignores humidity, wind, and sun — the things that decide whether heat is dangerous. Henderson's climate (searing Mojave Desert heat on the Las Vegas Valley's rim — intense sun and parched air drive extreme summer afternoons.) is exactly why a single "feels-like" or thermometer reading can understate the real risk. WBGT captures all of it in one number.
When is heat most dangerous in Henderson?
Heat stress typically peaks in the early-to-mid afternoon, when sun load is highest. Plan strenuous outdoor activity for early morning or evening, hydrate ahead of time, and use the forecast scrubber on the live map to find the safest window.
Is WetBulbTracker free to use for Henderson?
Yes. WetBulbTracker is free, needs no account, and works for anywhere on Earth — not just Henderson. You can install it to your home screen and even set heat alerts.
Put Henderson’s live heat stress on your site
A self-updating WBGT badge for schools, teams, camps, and local sites — it always shows the current reading and links back here.
<iframe src="https://wetbulbtracker.com/embed/henderson-nv" width="340" height="150" style="border:0" title="Live WBGT — Henderson, NV" loading="lazy"></iframe>Paste it into any website. The badge updates itself and links back here. Add ?theme=light for light sites.