Today | Weather | Tuesday, August 4, 2026
Active Weather Warnings

Weather in Henderson, Nevada

02:12 PM
Now
Sunny Weather
111° F
Feels Like 115°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 10
Humidity 8 %
Today
Hot Day
Day 115°
Night 86°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Henderson Weather Forecast Updated

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 4, 2025)
Cloudy Night

Day

106°

Night

81°

Wind

9 mph

Precipitation

0 %

Air Quality in Henderson

NOW
66 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.11 µg/m³
PM10 11 µg/m³
O3 0.059 ppm
NO2 0.2 ppb
SO2 0.2 ppb
CO 0.06 ppm
NH3 0.23 µg/m³
NO 0.07 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.55.11 µg/m³
PM1011 µg/m³
O3115.91 µg/m³
NO20.37 µg/m³
SO20.4 µg/m³
CO72.98 µg/m³
NH30.23 µg/m³
NO0.07 µg/m³

Weather Alerts and Warnings for Henderson

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 4 at 2:31AM PDT until August 8 at 8:00PM PDT by NWS Las Vegas NV
Aug 4, 2:31 AM Aug 8, 8:00 PM
WHAT: Dangerously hot conditions with highs 110 to 120 degrees
across the Mojave Desert. Highs 95 to 105 degrees across most of
the southern Great Basin and Arizona Strip. Little to no overnight
relief is expected, particularly in the Mojave Desert where lows of
80 to 95 degrees are forecast. This will result in Major-to-Extreme
Heat Risk.

WHERE: Portions of northwest Arizona, southeast California, and
south central and southern Nevada.

WHEN: Until 8 PM PDT /8 PM MST/ Saturday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates.
Updated: Aug 4, 2:03 PM Source: NWS Alert