Hourly Weather | Today Thursday, February 26, 2026
San Bernardino, California
2 AM
Night
55°
Feels Like 55°
0
Humidity: 77%
UV Index: 0
Wind: 4 mph
3 AM
Night
54°
Feels Like 55°
0
Humidity: 78%
UV Index: 0
Wind: 4 mph
4 AM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 80%
UV Index: 0
Wind: 4 mph
5 AM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 76%
UV Index: 1
Wind: 4 mph
8 AM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 62%
UV Index: 2
Wind: 4 mph
9 AM
Cloudy Weather
68°
Feels Like 72°
0
Humidity: 52%
UV Index: 3
Wind: 5 mph
10 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 43%
UV Index: 4
Wind: 5 mph
11 AM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 36%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
81°
Feels Like 86°
0
Humidity: 31%
UV Index: 5
Wind: 6 mph
1 PM
Cloudy Weather
82°
Feels Like 88°
0
Humidity: 29%
UV Index: 4
Wind: 6 mph
2 PM
Cloudy Weather
84°
Feels Like 88°
0
Humidity: 27%
UV Index: 4
Wind: 6 mph
3 PM
Cloudy Weather
88°
Feels Like 88°
0
Humidity: 26%
UV Index: 3
Wind: 7 mph
4 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 28%
UV Index: 2
Wind: 7 mph
5 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 30%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 34%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 38%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 44%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 48%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 53%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 57%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 26.68 µg/m³
  • PM10: 36.05 µg/m³
  • O3: 0.039 ppm
  • NO2: 4.5 ppb
  • SO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 30.56 µg/m³
  • PM10: 39.72 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.5 ppb
  • SO2: 1 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
95 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 33.24 µg/m³
  • PM10: 42.12 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.3 ppb
  • SO2: 1 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

5 AM
101 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 35.8 µg/m³
  • PM10: 44.47 µg/m³
  • O3: 0.037 ppm
  • NO2: 4.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

6 AM
107 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 38.32 µg/m³
  • PM10: 47 µg/m³
  • O3: 0.036 ppm
  • NO2: 4.8 ppb
  • SO2: 1.2 ppb
  • CO: 0.31 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 40.32 µg/m³
  • PM10: 49.23 µg/m³
  • O3: 0.035 ppm
  • NO2: 5.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.32 ppm

Health Recommendations:

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

8 AM
120 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 43.34 µg/m³
  • PM10: 52.35 µg/m³
  • O3: 0.035 ppm
  • NO2: 6.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.34 ppm

Health Recommendations:

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

9 AM
126 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 45.88 µg/m³
  • PM10: 54.29 µg/m³
  • O3: 0.037 ppm
  • NO2: 7.3 ppb
  • SO2: 1.3 ppb
  • CO: 0.35 ppm

Health Recommendations:

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

10 AM
132 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 48.1 µg/m³
  • PM10: 55.8 µg/m³
  • O3: 0.043 ppm
  • NO2: 7.5 ppb
  • SO2: 1.3 ppb
  • CO: 0.36 ppm

Health Recommendations:

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

11 AM
136 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 49.68 µg/m³
  • PM10: 56.88 µg/m³
  • O3: 0.053 ppm
  • NO2: 6.9 ppb
  • SO2: 1.3 ppb
  • CO: 0.36 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 50.69 µg/m³
  • PM10: 57.59 µg/m³
  • O3: 0.063 ppm
  • NO2: 5.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.35 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 51.14 µg/m³
  • PM10: 58.07 µg/m³
  • O3: 0.071 ppm
  • NO2: 3.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.33 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 48.39 µg/m³
  • PM10: 55.42 µg/m³
  • O3: 0.074 ppm
  • NO2: 2 ppb
  • SO2: 0.9 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 43.62 µg/m³
  • PM10: 50.41 µg/m³
  • O3: 0.072 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 38.87 µg/m³
  • PM10: 45.39 µg/m³
  • O3: 0.069 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 35.74 µg/m³
  • PM10: 42.23 µg/m³
  • O3: 0.065 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 33.03 µg/m³
  • PM10: 39.68 µg/m³
  • O3: 0.061 ppm
  • NO2: 2.9 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 30.43 µg/m³
  • PM10: 37.42 µg/m³
  • O3: 0.056 ppm
  • NO2: 2.6 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 29.82 µg/m³
  • PM10: 37.16 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 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.

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

Pollutant Concentrations:

  • PM2.5: 30.64 µg/m³
  • PM10: 38.25 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 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 PM
92 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 31.66 µg/m³
  • PM10: 39.44 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 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.

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

Pollutant Concentrations:

  • PM2.5: 32.69 µg/m³
  • PM10: 40.59 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 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.