Today | Weather | Wednesday, August 5, 2026
Active Weather Warnings

Weather in Lancaster, California

10:14 AM
Now
Sunny Weather
99° F
Feels Like 99°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 5
Humidity 11 %
Today
Sunny Weather
Day 106°
Night 79°
Precipitation 0 %
Wind 14 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.

Lancaster Weather Forecast Updated

42 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 5, 2025)
Cloudy Night

Day

97°

Night

68°

Wind

9 mph

Precipitation

0 %

Air Quality in Lancaster

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 8.54 µg/m³
PM10 23.52 µg/m³
O3 0.041 ppm
NO2 0.5 ppb
SO2 0.4 ppb
CO 0.08 ppm
NH3 0 µg/m³
NO 0.16 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.58.54 µg/m³
PM1023.52 µg/m³
O379.97 µg/m³
NO20.85 µg/m³
SO20.97 µg/m³
CO86.52 µg/m³
NH30 µg/m³
NO0.16 µg/m³

Weather Alerts and Warnings for Lancaster

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 4 at 8:53PM PDT until August 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Aug 4, 8:53 PM Aug 8, 8:00 PM
WHAT: Dangerously hot conditions with temperatures 102 to 110.

WHERE: Antelope Valley and nearby foothills.

WHEN: Until 8 PM PDT Saturday.

IMPACTS: There is a high risk for dangerous heat illness,
especially for sensitive groups like the very young, the very old,
those without air conditioning, and those active outdoors.

ADDITIONAL DETAILS: Heat hazards may extend through Saturday.
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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. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.
Updated: Aug 5, 9:32 AM Source: NWS Alert