Today | Weather | Sunday, August 9, 2026
Active Weather Warnings

Weather in Las Vegas, Nevada

08:46 AM
Now
Cloudy Weather
99° F
Feels Like 99°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 3
Humidity 21 %
Today
Cloudy Weather
Day 111°
Night 90°
Precipitation 25 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Las Vegas Weather Forecast Updated

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

Day

109°

Night

88°

Wind

9 mph

Precipitation

0 %

Air Quality in Las Vegas

NOW
84 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 22.23 µg/m³
PM10 45.42 µg/m³
O3 0.065 ppm
NO2 1.5 ppb
SO2 0.7 ppb
CO 0.13 ppm
NH3 2.28 µg/m³
NO 0.23 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)
PM2.522.23 µg/m³
PM1045.42 µg/m³
O3127.33 µg/m³
NO22.85 µg/m³
SO21.87 µg/m³
CO146.25 µg/m³
NH32.28 µg/m³
NO0.23 µg/m³

Weather Alerts and Warnings for Las Vegas

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 9 at 1:04AM PDT until August 10 at 8:00PM PDT by NWS Las Vegas NV
Aug 9, 1:04 AM Aug 10, 8:00 PM
WHAT: Dangerously hot conditions with highs of 110 to 115 in the
Las Vegas Valley, Pahrump, Moapa Valley, and the Colorado River
Valley, and up to 120 in Death Valley. Warm overnight temperatures
will result in little relief overnight.

WHERE: Lake Mohave, Lake Mead, Lower Colorado River Valley / Lake
Havasu, Death Valley National Park, Northeast Clark County, Western
Clark and Southern Nye County, and Las Vegas Valley.

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

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 9, 7:26 AM Source: NWS Alert