Hourly Weather | Today Tuesday, April 7, 2026
Tustin, California
2 PM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 46%
UV Index: 7
Wind: 9 mph
3 PM
Cloudy Weather
77°
Feels Like 81°
0
Humidity: 46%
UV Index: 5
Wind: 9 mph
4 PM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 48%
UV Index: 4
Wind: 8 mph
5 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 49%
UV Index: 2
Wind: 8 mph
6 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 52%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 58%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 63%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 70%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 74%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 77%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.29 µg/m³
  • PM10: 22.93 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.4 µg/m³
  • PM10: 23.13 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.21 µg/m³
  • PM10: 22.79 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.76 µg/m³
  • PM10: 22.06 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.16 µg/m³
  • PM10: 21.02 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

7 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 19.72 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.89 µg/m³
  • PM10: 18.53 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.51 µg/m³
  • PM10: 17.58 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.34 µg/m³
  • PM10: 16.99 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.38 µg/m³
  • PM10: 16.88 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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