Hourly Weather | Today Friday, September 26, 2025
Hayward, California
3 AM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 86%
Wind: 4 mph
UV Index: 0
4 AM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 86%
Wind: 4 mph
UV Index: 0
5 AM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 86%
Wind: 4 mph
UV Index: 0
6 AM
Cloudy Night
59°
Feels Like 61°
0
Humidity: 87%
Wind: 2 mph
UV Index: 0
7 AM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 92%
Wind: 2 mph
UV Index: 0
8 AM
Cloudy Weather
61°
Feels Like 63°
0
Humidity: 85%
Wind: 2 mph
UV Index: 4
9 AM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 75%
Wind: 2 mph
UV Index: 18
10 AM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 64%
Wind: 4 mph
UV Index: 28
11 AM
Sunny Weather
73°
Feels Like 79°
0
Humidity: 56%
Wind: 5 mph
UV Index: 39
12 PM
Sunny Weather
79°
Feels Like 82°
0
Humidity: 48%
Wind: 6 mph
UV Index: 47
1 PM
Sunny Weather
81°
Feels Like 84°
0
Humidity: 43%
Wind: 7 mph
UV Index: 50
2 PM
Sunny Weather
84°
Feels Like 88°
0
Humidity: 38%
Wind: 8 mph
UV Index: 47
3 PM
Sunny Weather
82°
Feels Like 84°
0
Humidity: 39%
Wind: 9 mph
UV Index: 39
4 PM
Sunny Weather
81°
Feels Like 82°
0
Humidity: 41%
Wind: 9 mph
UV Index: 28
5 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 45%
Wind: 9 mph
UV Index: 18
6 PM
Sunny Weather
75°
Feels Like 73°
0
Humidity: 50%
Wind: 8 mph
UV Index: 9
7 PM
Night
72°
Feels Like 70°
0
Humidity: 57%
Wind: 7 mph
UV Index: 0
8 PM
Night
70°
Feels Like 66°
0
Humidity: 64%
Wind: 6 mph
UV Index: 0
9 PM
Night
66°
Feels Like 63°
0
Humidity: 70%
Wind: 6 mph
UV Index: 0
10 PM
Night
63°
Feels Like 63°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0
11 PM
Night
63°
Feels Like 61°
0
Humidity: 78%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 12.68 µg/m³
  • PM10: 17.71 µg/m³
  • O₃: 21.51 ppb
  • NO₂: 10.57 ppb
  • SO₂: 1.32 ppb
  • CO: 183.80 ppb

Health Recommendations:

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

4 AM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.21 µg/m³
  • PM10: 16.20 µg/m³
  • O₃: 17.92 ppb
  • NO₂: 10.67 ppb
  • SO₂: 1.36 ppb
  • CO: 172.12 ppb

Health Recommendations:

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

5 AM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.22 µg/m³
  • PM10: 16.14 µg/m³
  • O₃: 16.31 ppb
  • NO₂: 10.72 ppb
  • SO₂: 1.32 ppb
  • CO: 171.10 ppb

Health Recommendations:

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

6 AM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.41 µg/m³
  • PM10: 16.23 µg/m³
  • O₃: 14.76 ppb
  • NO₂: 11.18 ppb
  • SO₂: 1.34 ppb
  • CO: 187.31 ppb

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.10 µg/m³
  • PM10: 16.89 µg/m³
  • O₃: 13.22 ppb
  • NO₂: 11.65 ppb
  • SO₂: 1.36 ppb
  • CO: 203.52 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
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.22 µg/m³
  • PM10: 17.71 µg/m³
  • O₃: 11.68 ppb
  • NO₂: 12.12 ppb
  • SO₂: 1.38 ppb
  • CO: 219.73 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: 15.19 µg/m³
  • PM10: 18.39 µg/m³
  • O₃: 18.81 ppb
  • NO₂: 10.90 ppb
  • SO₂: 1.81 ppb
  • CO: 207.88 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: 14.33 µg/m³
  • PM10: 17.80 µg/m³
  • O₃: 25.94 ppb
  • NO₂: 9.67 ppb
  • SO₂: 2.24 ppb
  • CO: 196.03 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.12 µg/m³
  • PM10: 17.58 µg/m³
  • O₃: 33.08 ppb
  • NO₂: 8.45 ppb
  • SO₂: 2.67 ppb
  • CO: 184.18 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.75 µg/m³
  • PM10: 18.43 µg/m³
  • O₃: 40.05 ppb
  • NO₂: 7.38 ppb
  • SO₂: 2.55 ppb
  • CO: 179.37 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
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.09 µg/m³
  • PM10: 18.73 µg/m³
  • O₃: 47.03 ppb
  • NO₂: 6.32 ppb
  • SO₂: 2.42 ppb
  • CO: 174.56 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.23 µg/m³
  • PM10: 17.36 µg/m³
  • O₃: 54.01 ppb
  • NO₂: 5.25 ppb
  • SO₂: 2.29 ppb
  • CO: 169.75 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.18 µg/m³
  • PM10: 17.09 µg/m³
  • O₃: 54.42 ppb
  • NO₂: 5.38 ppb
  • SO₂: 2.30 ppb
  • CO: 167.67 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
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.38 µg/m³
  • PM10: 17.37 µg/m³
  • O₃: 54.82 ppb
  • NO₂: 5.51 ppb
  • SO₂: 2.32 ppb
  • CO: 165.59 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.62 µg/m³
  • PM10: 17.82 µg/m³
  • O₃: 55.22 ppb
  • NO₂: 5.64 ppb
  • SO₂: 2.33 ppb
  • CO: 163.52 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
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.56 µg/m³
  • PM10: 17.63 µg/m³
  • O₃: 46.18 ppb
  • NO₂: 9.37 ppb
  • SO₂: 2.29 ppb
  • CO: 180.67 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
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.93 µg/m³
  • PM10: 17.85 µg/m³
  • O₃: 37.14 ppb
  • NO₂: 13.11 ppb
  • SO₂: 2.26 ppb
  • CO: 197.82 ppb

Health Recommendations:

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

8 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.73 µg/m³
  • PM10: 18.48 µg/m³
  • O₃: 28.09 ppb
  • NO₂: 16.85 ppb
  • SO₂: 2.22 ppb
  • CO: 214.98 ppb

Health Recommendations:

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