Hourly Weather | Today Wednesday, May 20, 2026
Tracy, California
4 PM
Cloudy Weather
95°
Feels Like 97°
0
Humidity: 13%
UV Index: 5
Wind: 9 mph
5 PM
Cloudy Weather
93°
Feels Like 93°
0
Humidity: 14%
UV Index: 3
Wind: 10 mph
6 PM
Cloudy Weather
90°
Feels Like 88°
0
Humidity: 16%
UV Index: 2
Wind: 10 mph
7 PM
Cloudy Weather
86°
Feels Like 84°
0
Humidity: 17%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Weather
82°
Feels Like 81°
0
Humidity: 23%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
79°
Feels Like 75°
0
Humidity: 25%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
75°
Feels Like 73°
0
Humidity: 28%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 31%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.51 µg/m³
  • PM10: 12.94 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.39 µg/m³
  • PM10: 12.91 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.5 µg/m³
  • PM10: 13.19 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.7 µg/m³
  • PM10: 13.58 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.8 µg/m³
  • PM10: 13.72 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.83 µg/m³
  • PM10: 13.62 µg/m³
  • O3: 0.038 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.86 µg/m³
  • PM10: 13.59 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.2 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
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.88 µg/m³
  • PM10: 13.67 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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