Hourly Weather | Today | Tuesday, August 26, 2025
Sunnyvale, California
7 AM
Cloudy WeatherCloudy weather, overcast skies with no rain.
63°
Feels Like 63°
0
Humidity: 81%
Wind: 4 mph
UV Index: 1
8 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
66°
Feels Like 66°
0
Humidity: 73%
Wind: 2 mph
UV Index: 8
9 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
70°
Feels Like 72°
0
Humidity: 68%
Wind: 4 mph
UV Index: 21
10 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
72°
Feels Like 77°
0
Humidity: 64%
Wind: 5 mph
UV Index: 39
11 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
73°
Feels Like 81°
0
Humidity: 61%
Wind: 5 mph
UV Index: 54
12 PM
Sunny WeatherSunny weather, clear skies and sunny weather.
75°
Feels Like 84°
0
Humidity: 57%
Wind: 7 mph
UV Index: 73
1 PM
Sunny WeatherSunny weather, clear skies and sunny weather.
79°
Feels Like 84°
0
Humidity: 54%
Wind: 8 mph
UV Index: 81
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 84°
0
Humidity: 53%
Wind: 9 mph
UV Index: 73
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
81°
Feels Like 82°
0
Humidity: 52%
Wind: 10 mph
UV Index: 54
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 81°
0
Humidity: 53%
Wind: 12 mph
UV Index: 39
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 79°
0
Humidity: 55%
Wind: 10 mph
UV Index: 25
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
75°
Feels Like 75°
0
Humidity: 58%
Wind: 10 mph
UV Index: 15
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
73°
Feels Like 72°
0
Humidity: 62%
Wind: 9 mph
UV Index: 5
8 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
70°
Feels Like 66°
0
Humidity: 67%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
66°
Feels Like 64°
0
Humidity: 73%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
64°
Feels Like 63°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy NightCloudy night, overcast skies at night with no rain.
64°
Feels Like 64°
0
Humidity: 78%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.79 µg/m³
  • PM10: 16.19 µg/m³
  • O₃: 19.26 ppb
  • NO₂: 6.25 ppb
  • SO₂: 1.10 ppb
  • CO: 144.34 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.81 µg/m³
  • PM10: 15.35 µg/m³
  • O₃: 21.06 ppb
  • NO₂: 5.30 ppb
  • SO₂: 1.11 ppb
  • CO: 140.89 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 11.50 µg/m³
  • PM10: 15.20 µg/m³
  • O₃: 25.69 ppb
  • NO₂: 4.55 ppb
  • SO₂: 1.06 ppb
  • CO: 137.09 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.94 µg/m³
  • PM10: 14.55 µg/m³
  • O₃: 30.32 ppb
  • NO₂: 3.81 ppb
  • SO₂: 1.00 ppb
  • CO: 133.29 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.50 µg/m³
  • PM10: 13.99 µg/m³
  • O₃: 34.95 ppb
  • NO₂: 3.06 ppb
  • SO₂: 0.94 ppb
  • CO: 129.49 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

12 PM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.27 µg/m³
  • PM10: 13.57 µg/m³
  • O₃: 38.28 ppb
  • NO₂: 2.53 ppb
  • SO₂: 0.88 ppb
  • CO: 125.42 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

1 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.07 µg/m³
  • PM10: 13.16 µg/m³
  • O₃: 41.61 ppb
  • NO₂: 2.01 ppb
  • SO₂: 0.82 ppb
  • CO: 121.36 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

2 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.67 µg/m³
  • PM10: 12.55 µg/m³
  • O₃: 44.94 ppb
  • NO₂: 1.48 ppb
  • SO₂: 0.75 ppb
  • CO: 117.29 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

3 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.34 µg/m³
  • PM10: 12.04 µg/m³
  • O₃: 44.60 ppb
  • NO₂: 1.52 ppb
  • SO₂: 0.72 ppb
  • CO: 116.55 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.25 µg/m³
  • PM10: 11.97 µg/m³
  • O₃: 44.26 ppb
  • NO₂: 1.55 ppb
  • SO₂: 0.69 ppb
  • CO: 115.82 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

5 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.30 µg/m³
  • PM10: 12.07 µg/m³
  • O₃: 43.92 ppb
  • NO₂: 1.59 ppb
  • SO₂: 0.65 ppb
  • CO: 115.08 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.42 µg/m³
  • PM10: 12.20 µg/m³
  • O₃: 39.23 ppb
  • NO₂: 3.11 ppb
  • SO₂: 0.70 ppb
  • CO: 122.32 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.58 µg/m³
  • PM10: 12.41 µg/m³
  • O₃: 34.53 ppb
  • NO₂: 4.64 ppb
  • SO₂: 0.75 ppb
  • CO: 129.55 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.