Hourly Weather Forecast for Antioch, California

Hourly Weather | Today › Thursday, October 8, 2026

Active Weather Warnings

Heat Advisory

Antioch, California

7 AM

64°

Feels Like 63°

Humidity: 65%

UV Index: 0

Wind: 7 mph

8 AM

66°

Feels Like 64°

Humidity: 62%

UV Index: 1

Wind: 7 mph

9 AM

72°

Feels Like 72°

Humidity: 51%

UV Index: 2

Wind: 7 mph

10 AM

79°

Feels Like 81°

Humidity: 40%

UV Index: 2

Wind: 7 mph

11 AM

84°

Feels Like 86°

Humidity: 33%

UV Index: 3

Wind: 7 mph

12 PM

90°

Feels Like 91°

Humidity: 27%

UV Index: 4

Wind: 7 mph

1 PM

93°

Feels Like 95°

Humidity: 23%

UV Index: 4

Wind: 7 mph

2 PM

97°

Feels Like 97°

Humidity: 20%

UV Index: 4

Wind: 8 mph

3 PM

97°

Feels Like 99°

Humidity: 18%

UV Index: 3

Wind: 9 mph

4 PM

99°

Feels Like 99°

Humidity: 17%

UV Index: 2

Wind: 10 mph

5 PM

97°

Feels Like 93°

Humidity: 17%

UV Index: 2

Wind: 10 mph

6 PM

91°

Feels Like 90°

Humidity: 20%

UV Index: 1

Wind: 9 mph

7 PM

88°

Feels Like 84°

Humidity: 25%

UV Index: 0

Wind: 8 mph

8 PM

84°

Feels Like 81°

Humidity: 30%

UV Index: 0

Wind: 8 mph

9 PM

81°

Feels Like 79°

Humidity: 33%

UV Index: 0

Wind: 8 mph

10 PM

79°

Feels Like 75°

Humidity: 36%

UV Index: 0

Wind: 8 mph

11 PM

75°

Feels Like 73°

Humidity: 39%

UV Index: 0

Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM

44 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.66 µg/m³
PM₁₀: 22.25 µg/m³
O₃: 0.036 ppm
NO₂: 2.2 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

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

8 AM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.99 µg/m³
PM₁₀: 22.53 µg/m³
O₃: 0.036 ppm
NO₂: 2.5 ppb
SO₂: 0.5 ppb
CO: 0.14 ppm

Health Recommendations:

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

9 AM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.12 µg/m³
PM₁₀: 22.36 µg/m³
O₃: 0.035 ppm
NO₂: 3.2 ppb
SO₂: 0.5 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 AM

47 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.25 µg/m³
PM₁₀: 22.2 µg/m³
O₃: 0.036 ppm
NO₂: 3.6 ppb
SO₂: 0.6 ppb
CO: 0.15 ppm

Health Recommendations:

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

11 AM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.49 µg/m³
PM₁₀: 22.25 µg/m³
O₃: 0.038 ppm
NO₂: 3.6 ppb
SO₂: 0.6 ppb
CO: 0.15 ppm

Health Recommendations:

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

12 PM

50 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.18 µg/m³
PM₁₀: 23.04 µg/m³
O₃: 0.041 ppm
NO₂: 3.3 ppb
SO₂: 0.6 ppb
CO: 0.15 ppm

Health Recommendations:

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

1 PM

52 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 13.02 µg/m³
PM₁₀: 23.96 µg/m³
O₃: 0.045 ppm
NO₂: 3 ppb
SO₂: 0.7 ppb
CO: 0.15 ppm

Health Recommendations:

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

2 PM

54 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 13.87 µg/m³
PM₁₀: 24.86 µg/m³
O₃: 0.048 ppm
NO₂: 2.7 ppb
SO₂: 0.7 ppb
CO: 0.14 ppm

Health Recommendations:

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

3 PM

55 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 14.32 µg/m³
PM₁₀: 25.48 µg/m³
O₃: 0.050 ppm
NO₂: 2.3 ppb
SO₂: 0.7 ppb
CO: 0.14 ppm

Health Recommendations:

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

4 PM

55 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 14.23 µg/m³
PM₁₀: 25.82 µg/m³
O₃: 0.051 ppm
NO₂: 2.1 ppb
SO₂: 0.6 ppb
CO: 0.14 ppm

Health Recommendations:

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

5 PM

54 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 13.82 µg/m³
PM₁₀: 26.04 µg/m³
O₃: 0.050 ppm
NO₂: 2.1 ppb
SO₂: 0.6 ppb
CO: 0.14 ppm

Health Recommendations:

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

6 PM

53 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 13.33 µg/m³
PM₁₀: 26.06 µg/m³
O₃: 0.049 ppm
NO₂: 2.5 ppb
SO₂: 0.5 ppb
CO: 0.14 ppm

Health Recommendations:

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

7 PM

52 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.85 µg/m³
PM₁₀: 25.77 µg/m³
O₃: 0.046 ppm
NO₂: 2.9 ppb
SO₂: 0.5 ppb
CO: 0.14 ppm

Health Recommendations:

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

8 PM

51 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.47 µg/m³
PM₁₀: 25.41 µg/m³
O₃: 0.045 ppm
NO₂: 2.8 ppb
SO₂: 0.5 ppb
CO: 0.14 ppm

Health Recommendations:

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

9 PM

51 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.44 µg/m³
PM₁₀: 25.29 µg/m³
O₃: 0.043 ppm
NO₂: 2.8 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

51 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.61 µg/m³
PM₁₀: 25.51 µg/m³
O₃: 0.042 ppm
NO₂: 2.9 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

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

11 PM

52 AQI

Moderate air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 12.71 µg/m³
PM₁₀: 25.78 µg/m³
O₃: 0.041 ppm
NO₂: 2.9 ppb
SO₂: 0.4 ppb
CO: 0.14 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Antioch

Moderate Expected Likely

Heat Advisory

Heat Advisory issued October 8 at 4:54AM PDT until October 8 at 10:00PM PDT by NWS San Francisco CA

Oct 8, 4:54 AM → Oct 8, 10:00 PM

WHAT: Hot conditions with maximum temperatures in the mid-90s to
near 105. Mild minimum temperatures and weak onshore flow will
limit overnight relief.

WHERE: The East Bay and San Francisco Bay Shoreline, North Bay
Interior Mountains and Valleys, The Santa Clara Valley and Eastern
Hills, The Santa Cruz Mountains, Interior Monterey County and the
Santa Lucia Range, Most of San Benito County and the Cholame Hills
in Southeast Monterey County, and Southern Salinas Valley/Arroyo
Seco and Lake San Antonio.

WHEN: Until 10 PM PDT this evening.

IMPACTS: This level of heat affects anyone without effective
cooling and/or adequate hydration. Impacts likely in some health
systems, heat-sensitive industries and infrastructure.

+ Read More

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke.

Updated: Oct 8, 6:15 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Antioch

Heat Advisory

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