Hourly Weather | Today Thursday, February 26, 2026
Santa Clara, California
2 AM
Foggy Weather
57°
Feels Like 55°
7
Humidity: 87%
UV Index: 0
Wind: 5 mph
3 AM
Foggy Weather
57°
Feels Like 55°
7
Humidity: 88%
UV Index: 0
Wind: 5 mph
4 AM
Foggy Weather
57°
Feels Like 55°
7
Humidity: 87%
UV Index: 0
Wind: 5 mph
5 AM
Foggy Weather
55°
Feels Like 55°
7
Humidity: 86%
UV Index: 0
Wind: 5 mph
6 AM
Foggy Weather
55°
Feels Like 54°
5
Humidity: 87%
UV Index: 0
Wind: 5 mph
7 AM
Foggy Weather
55°
Feels Like 55°
0
Humidity: 91%
UV Index: 0
Wind: 4 mph
8 AM
Foggy Weather
57°
Feels Like 57°
0
Humidity: 88%
UV Index: 1
Wind: 5 mph
9 AM
Foggy Weather
61°
Feels Like 61°
0
Humidity: 81%
UV Index: 1
Wind: 5 mph
10 AM
Foggy Weather
64°
Feels Like 64°
0
Humidity: 75%
UV Index: 1
Wind: 6 mph
11 AM
Foggy Weather
66°
Feels Like 66°
0
Humidity: 67%
UV Index: 2
Wind: 7 mph
12 PM
Foggy Weather
70°
Feels Like 70°
0
Humidity: 61%
UV Index: 2
Wind: 7 mph
1 PM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 56%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 54%
UV Index: 3
Wind: 8 mph
3 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 51%
UV Index: 2
Wind: 8 mph
4 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 55%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 58%
UV Index: 1
Wind: 8 mph
6 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 66%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 71%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 73%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 73%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.06 µg/m³
  • PM10: 7.51 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

3 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.03 µg/m³
  • PM10: 7.71 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.98 µg/m³
  • PM10: 7.7 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

5 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.83 µg/m³
  • PM10: 7.44 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.85 µg/m³
  • PM10: 7.53 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 7.71 µg/m³
  • O3: 0.027 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 8.04 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.41 µg/m³
  • PM10: 8.52 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.79 µg/m³
  • PM10: 9 µg/m³
  • O3: 0.026 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.34 µg/m³
  • PM10: 9.65 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.33 µg/m³
  • PM10: 10.88 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.41 µg/m³
  • PM10: 12.16 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.77 µg/m³
  • PM10: 12.51 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

3 PM
44 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.6 µg/m³
  • PM10: 12.31 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

4 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 12 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

5 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.74 µg/m³
  • PM10: 11.51 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.18 µg/m³
  • PM10: 10.95 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.72 µg/m³
  • PM10: 10.62 µg/m³
  • O3: 0.048 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.55 µg/m³
  • PM10: 10.71 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.46 µg/m³
  • PM10: 10.85 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 10.59 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.81 µg/m³
  • PM10: 10.17 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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