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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Tuesday, August 25, 2026
Active Weather Warnings
Hesperia, California
3 AM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 40%
UV Index: 0
Wind: 6 mph
4 AM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 41%
UV Index: 0
Wind: 5 mph
5 AM
Cloudy Night
70°
Feels Like 68°
0
Humidity: 42%
UV Index: 0
Wind: 5 mph
6 AM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 44%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
73°
Feels Like 72°
0
Humidity: 39%
UV Index: 1
Wind: 4 mph
8 AM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 34%
UV Index: 2
Wind: 4 mph
9 AM
Cloudy Weather
84°
Feels Like 86°
0
Humidity: 26%
UV Index: 3
Wind: 4 mph
10 AM
Cloudy Weather
91°
Feels Like 93°
0
Humidity: 20%
UV Index: 4
Wind: 5 mph
11 AM
Cloudy Weather
95°
Feels Like 100°
0
Humidity: 17%
UV Index: 6
Wind: 6 mph
12 PM
Cloudy Weather
99°
Feels Like 104°
0
Humidity: 16%
UV Index: 9
Wind: 6 mph
1 PM
Cloudy Weather
100°
Feels Like 106°
0
Humidity: 15%
UV Index: 10
Wind: 7 mph
2 PM
Cloudy Weather
100°
Feels Like 106°
0
Humidity: 15%
UV Index: 9
Wind: 8 mph
3 PM
Cloudy Weather
102°
Feels Like 104°
0
Humidity: 14%
UV Index: 6
Wind: 9 mph
4 PM
Cloudy Weather
100°
Feels Like 100°
0
Humidity: 15%
UV Index: 4
Wind: 12 mph
5 PM
Cloudy Weather
99°
Feels Like 99°
0
Humidity: 17%
UV Index: 3
Wind: 12 mph
6 PM
Cloudy Weather
97°
Feels Like 95°
0
Humidity: 19%
UV Index: 2
Wind: 12 mph
7 PM
Cloudy Weather
91°
Feels Like 90°
0
Humidity: 24%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Night
88°
Feels Like 86°
0
Humidity: 28%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
84°
Feels Like 82°
0
Humidity: 32%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
82°
Feels Like 81°
0
Humidity: 35%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
81°
Feels Like 79°
0
Humidity: 38%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
77 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.57 µg/m³
  • PM10: 38.43 µg/m³
  • O3: 0.034 ppm
  • NO2: 7.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

4 AM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.01 µg/m³
  • PM10: 38.22 µg/m³
  • O3: 0.032 ppm
  • NO2: 7.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

5 AM
75 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 23.85 µg/m³
  • PM10: 38.06 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

6 AM
75 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 23.9 µg/m³
  • PM10: 38.4 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.6 ppb
  • SO2: 1.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

7 AM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.26 µg/m³
  • PM10: 39.12 µg/m³
  • O3: 0.030 ppm
  • NO2: 8.8 ppb
  • SO2: 1.6 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

8 AM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 23.98 µg/m³
  • PM10: 39.36 µg/m³
  • O3: 0.029 ppm
  • NO2: 10 ppb
  • SO2: 1.7 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

9 AM
77 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.55 µg/m³
  • PM10: 40.54 µg/m³
  • O3: 0.032 ppm
  • NO2: 10.2 ppb
  • SO2: 1.9 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

10 AM
82 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 27.19 µg/m³
  • PM10: 43.62 µg/m³
  • O3: 0.037 ppm
  • NO2: 11.3 ppb
  • SO2: 2.1 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

11 AM
91 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 31.21 µg/m³
  • PM10: 48.02 µg/m³
  • O3: 0.046 ppm
  • NO2: 11.7 ppb
  • SO2: 2.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

12 PM
94 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 32.8 µg/m³
  • PM10: 49.1 µg/m³
  • O3: 0.057 ppm
  • NO2: 10.6 ppb
  • SO2: 2.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

1 PM
95 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 33.2 µg/m³
  • PM10: 48.65 µg/m³
  • O3: 0.065 ppm
  • NO2: 8.8 ppb
  • SO2: 2.2 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

2 PM
107 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 34.65 µg/m³
  • PM10: 49.24 µg/m³
  • O3: 0.072 ppm
  • NO2: 7.1 ppb
  • SO2: 2 ppb
  • CO: 0.22 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
120 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 37.48 µg/m³
  • PM10: 51.55 µg/m³
  • O3: 0.076 ppm
  • NO2: 5.2 ppb
  • SO2: 1.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
119 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 40.21 µg/m³
  • PM10: 53.95 µg/m³
  • O3: 0.076 ppm
  • NO2: 4.1 ppb
  • SO2: 1.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
112 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.26 µg/m³
  • PM10: 53.79 µg/m³
  • O3: 0.071 ppm
  • NO2: 3.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.53 µg/m³
  • PM10: 53.28 µg/m³
  • O3: 0.065 ppm
  • NO2: 5.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 37.38 µg/m³
  • PM10: 51.26 µg/m³
  • O3: 0.058 ppm
  • NO2: 7.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
96 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 33.73 µg/m³
  • PM10: 47.38 µg/m³
  • O3: 0.050 ppm
  • NO2: 7.7 ppb
  • SO2: 1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

9 PM
89 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 30.32 µg/m³
  • PM10: 43.83 µg/m³
  • O3: 0.046 ppm
  • NO2: 7.8 ppb
  • SO2: 1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

10 PM
85 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.21 µg/m³
  • PM10: 41.87 µg/m³
  • O3: 0.042 ppm
  • NO2: 8.6 ppb
  • SO2: 1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

11 PM
82 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.79 µg/m³
  • PM10: 40.7 µg/m³
  • O3: 0.040 ppm
  • NO2: 9.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Hesperia

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued August 22 at 1:10PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Aug 25, 10:00 AM → Aug 28, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 108
possible and limited nighttime cooling.

WHERE: Apple and Lucerne Valleys.

WHEN: From Tuesday morning through Friday evening.

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.
Updated: Aug 22, 4:50 PM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 24 at 10:04PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Aug 25, 10:00 AM → Aug 28, 8:00 PM
WHAT: Dangerously hot conditions with high temperatures in the
upper 90s to 105 expected.

WHERE: Apple and Lucerne Valleys County.

WHEN: From 10 AM Tuesday to 8 PM PDT Friday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.

ADDITIONAL DETAILS: Low temperatures 5 to 10 degrees above normal
will limit relief from the heat. Increasing temperatures into the
middle of next week will increase the threat of heat-related
illness across populations.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Aug 25, 2:08 AM Source: NWS Alert

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