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Hourly Weather | Today › Saturday, May 16, 2026
Active Weather Warnings
Lancaster, California
9 AM
Sunny Weather
66°
Feels Like 63°
0
Humidity: 35%
UV Index: 3
Wind: 24 mph
10 AM
Sunny Weather
70°
Feels Like 68°
0
Humidity: 28%
UV Index: 5
Wind: 24 mph
11 AM
Sunny Weather
73°
Feels Like 73°
0
Humidity: 23%
UV Index: 8
Wind: 25 mph
12 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 18%
UV Index: 10
Wind: 27 mph
1 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 17%
UV Index: 11
Wind: 28 mph
2 PM
Sunny Weather
81°
Feels Like 81°
0
Humidity: 16%
UV Index: 10
Wind: 28 mph
3 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 16%
UV Index: 8
Wind: 29 mph
4 PM
Sunny Weather
79°
Feels Like 75°
0
Humidity: 16%
UV Index: 5
Wind: 29 mph
5 PM
Sunny Weather
77°
Feels Like 73°
0
Humidity: 17%
UV Index: 3
Wind: 29 mph
6 PM
Sunny Weather
75°
Feels Like 72°
0
Humidity: 18%
UV Index: 2
Wind: 28 mph
7 PM
Sunny Weather
73°
Feels Like 70°
0
Humidity: 20%
UV Index: 1
Wind: 25 mph
8 PM
Night
72°
Feels Like 66°
0
Humidity: 24%
UV Index: 0
Wind: 23 mph
9 PM
Night
70°
Feels Like 64°
0
Humidity: 26%
UV Index: 0
Wind: 22 mph
10 PM
Night
68°
Feels Like 63°
0
Humidity: 28%
UV Index: 0
Wind: 20 mph
11 PM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 29%
UV Index: 0
Wind: 18 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.74 µg/m³
  • PM10: 24.39 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.1 ppb
  • SO2: 1.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.15 µg/m³
  • PM10: 24.71 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.68 µg/m³
  • PM10: 24.67 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.64 µg/m³
  • PM10: 23.29 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.83 µg/m³
  • PM10: 21.05 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.87 µg/m³
  • PM10: 18.95 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.99 µg/m³
  • PM10: 17.55 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.32 µg/m³
  • PM10: 17.21 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
56 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.81 µg/m³
  • PM10: 17.23 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.43 µg/m³
  • PM10: 17.11 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.13 µg/m³
  • PM10: 16.88 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.95 µg/m³
  • PM10: 16.98 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 17.24 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.79 µg/m³
  • PM10: 16.66 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.77 µg/m³
  • PM10: 15.73 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Lancaster

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued May 15 at 1:14PM PDT until May 16 at 10:00PM PDT by NWS Los Angeles/Oxnard CA
May 16, 10:00 AM → May 16, 10:00 PM
...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM PDT SATURDAY FOR
STRONG WEST TO NORTHWEST WINDS AND LOW RELATIVE HUMIDITY FOR THE
ANTELOPE VALLEY AND ADJACENT WESTERN FOOTHILLS...

.The best overlap of strong winds and critically low humidities in
the Antelope Valley and adjacent foothills is expected on Saturday,
leading to an increased risk of large and fast moving grass fires.

The National Weather Service in Los Angeles/Oxnard has issued a
Red Flag Warning for strong west to northwest winds and low
relative humidity, which is in effect from 10 AM to 10 PM PDT
Saturday.

* WINDS...West to northwest 25 to 35 mph with gusts to 50 mph,
except damaging gusts up to 60 mph in the western portions of
the Antelope Valley.

* RELATIVE HUMIDITY...10 to 20 percent.

IMPACTS: Any grass fires that develop will likely spread
rapidly with extreme fire behavior, with the potential for long
range spotting and large fire growth.

ADDITIONAL DETAILS: While the best overlap of strong winds and
low humidities will likely occur during the Red Flag Warning
period, there will be an extended elevated fire threat starting
as early as this afternoon and persisting through Sunday due to
gusty winds and low to moderate humidities.
+ Read More
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information.
Updated: May 16, 7:44 AM Source: NWS Alert
Moderate Expected Likely

Wind Advisory

Wind Advisory issued May 15 at 4:16AM PDT until May 17 at 11:00PM PDT by NWS Los Angeles/Oxnard CA
May 15, 9:00 PM → May 17, 11:00 PM
WHAT: West to northwest winds 25 to 35 mph with gusts up to 50
mph expected.

WHERE: Antelope Valley and Western Antelope Valley Foothills.

WHEN: From 9 PM this evening to 11 PM PDT Sunday.

IMPACTS: Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
+ Read More
Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Updated: May 15, 10:44 AM Source: NWS Alert

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