Hourly Weather | Today › Friday, October 9, 2026
Active Weather Warnings
Tracy, California
10 PM
Night
72°
Feels Like 70°
29
Humidity: 58%
UV Index: 0
Wind: 6 mph
11 PM
Night
70°
Feels Like 66°
17
Humidity: 63%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 20.91 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.78 µg/m³
  • PM10: 19.32 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Tracy

Moderate Expected Likely

Heat Advisory

Heat Advisory issued October 6 at 11:32AM PDT until October 9 at 10:00PM PDT by NWS Sacramento CA
Oct 6, 11:32 AM → Oct 9, 10:00 PM
WHAT: High temperatures of 94 to 102 degrees expected and overnight low temperatures in the mid 60s to low 70s, with widespread Moderate HeatRisk and areas of Major HeatRisk. WHERE: The Sacramento and northern San Joaquin Valleys, Delta and Carquinez Strait, and foothills. WHEN: Until 10 PM PDT Friday. IMPACTS: Hot temperatures may cause heat illnesses, especially to anyone without effective cooling and/or adequate hydration. ADDITIONAL DETAILS: Hottest days expected Tuesday through Thursday.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Oct 7, 7:36 AM Source: NWS Alert