Hourly Weather | Today Thursday, December 4, 2025
San Bernardino, California
3 AM
Cloudy Night
45°
Feels Like 34°
0
Humidity: 43%
Wind: 15 mph
UV Index: 0
4 AM
Cloudy Night
43°
Feels Like 32°
0
Humidity: 45%
Wind: 15 mph
UV Index: 0
5 AM
Cloudy Night
41°
Feels Like 30°
0
Humidity: 46%
Wind: 15 mph
UV Index: 0
6 AM
Cloudy Night
39°
Feels Like 30°
0
Humidity: 47%
Wind: 14 mph
UV Index: 0
7 AM
Cloudy Weather
45°
Feels Like 43°
0
Humidity: 44%
Wind: 6 mph
UV Index: 0
8 AM
Cloudy Weather
48°
Feels Like 50°
0
Humidity: 33%
Wind: 5 mph
UV Index: 1
9 AM
Cloudy Weather
55°
Feels Like 57°
0
Humidity: 27%
Wind: 5 mph
UV Index: 2
10 AM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 21%
Wind: 5 mph
UV Index: 2
11 AM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 18%
Wind: 5 mph
UV Index: 3
12 PM
Sunny Weather
66°
Feels Like 70°
0
Humidity: 16%
Wind: 5 mph
UV Index: 3
1 PM
Sunny Weather
66°
Feels Like 70°
0
Humidity: 15%
Wind: 6 mph
UV Index: 3
2 PM
Sunny Weather
68°
Feels Like 70°
0
Humidity: 15%
Wind: 6 mph
UV Index: 2
3 PM
Sunny Weather
66°
Feels Like 66°
0
Humidity: 16%
Wind: 7 mph
UV Index: 2
4 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 18%
Wind: 7 mph
UV Index: 1
5 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 20%
Wind: 7 mph
UV Index: 0
6 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 22%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 24%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 28%
Wind: 6 mph
UV Index: 0
9 PM
Night
52°
Feels Like 50°
0
Humidity: 31%
Wind: 6 mph
UV Index: 0
10 PM
Night
48°
Feels Like 48°
0
Humidity: 35%
Wind: 5 mph
UV Index: 0
11 PM
Night
46°
Feels Like 46°
0
Humidity: 37%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 23.86 µg/m³
  • PM10: 35.14 µg/m³
  • O3: 0.033 ppm
  • NO2: 9.4 ppb
  • SO2: 1.5 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 20.75 µg/m³
  • PM10: 31.73 µg/m³
  • O3: 0.035 ppm
  • NO2: 7.3 ppb
  • SO2: 1.2 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.

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

Pollutant Concentrations:

  • PM2.5: 14.74 µg/m³
  • PM10: 24.58 µg/m³
  • O3: 0.038 ppm
  • NO2: 5.3 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 12.26 µg/m³
  • PM10: 21.73 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.6 ppb
  • SO2: 0.7 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.

7 AM
45 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.81 µg/m³
  • PM10: 20.26 µg/m³
  • O3: 0.037 ppm
  • NO2: 4.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

8 AM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.47 µg/m³
  • PM10: 19.09 µg/m³
  • O3: 0.037 ppm
  • NO2: 5.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

9 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.48 µg/m³
  • PM10: 18.23 µg/m³
  • O3: 0.038 ppm
  • NO2: 5.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.21 µg/m³
  • PM10: 17.89 µg/m³
  • O3: 0.039 ppm
  • NO2: 5.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.4 µg/m³
  • PM10: 17.81 µg/m³
  • O3: 0.042 ppm
  • NO2: 5.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

12 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.14 µg/m³
  • PM10: 18.24 µg/m³
  • O3: 0.047 ppm
  • NO2: 4.9 ppb
  • SO2: 1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.4 µg/m³
  • PM10: 19.11 µg/m³
  • O3: 0.052 ppm
  • NO2: 4.2 ppb
  • SO2: 1.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

2 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 12.45 µg/m³
  • PM10: 20.76 µg/m³
  • O3: 0.056 ppm
  • NO2: 4.4 ppb
  • SO2: 1.4 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.

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

Pollutant Concentrations:

  • PM2.5: 15.16 µg/m³
  • PM10: 23.36 µg/m³
  • O3: 0.057 ppm
  • NO2: 5.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

4 PM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.79 µg/m³
  • PM10: 26.11 µg/m³
  • O3: 0.056 ppm
  • NO2: 7.8 ppb
  • SO2: 2.1 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.

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

Pollutant Concentrations:

  • PM2.5: 19.5 µg/m³
  • PM10: 28.05 µg/m³
  • O3: 0.052 ppm
  • NO2: 9.9 ppb
  • SO2: 2.4 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.

6 PM
67 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.01 µg/m³
  • PM10: 28.84 µg/m³
  • O3: 0.049 ppm
  • NO2: 10.2 ppb
  • SO2: 2.6 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.

7 PM
66 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.42 µg/m³
  • PM10: 28.46 µg/m³
  • O3: 0.046 ppm
  • NO2: 9.9 ppb
  • SO2: 2.5 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.

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

Pollutant Concentrations:

  • PM2.5: 17.52 µg/m³
  • PM10: 26.48 µg/m³
  • O3: 0.045 ppm
  • NO2: 8.9 ppb
  • SO2: 2.3 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.

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

Pollutant Concentrations:

  • PM2.5: 15.72 µg/m³
  • PM10: 24.36 µg/m³
  • O3: 0.043 ppm
  • NO2: 8.6 ppb
  • SO2: 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.

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

Pollutant Concentrations:

  • PM2.5: 13.47 µg/m³
  • PM10: 21.51 µg/m³
  • O3: 0.041 ppm
  • NO2: 8.4 ppb
  • SO2: 1.7 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.

11 PM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.65 µg/m³
  • PM10: 18.87 µg/m³
  • O3: 0.039 ppm
  • NO2: 8.1 ppb
  • SO2: 1.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

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