Hourly Weather | Today Monday, April 6, 2026
Santa Ana, California
6 AM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 84%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 80%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 73%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 70%
UV Index: 2
Wind: 6 mph
10 AM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 60%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
73°
Feels Like 79°
0
Humidity: 52%
UV Index: 5
Wind: 7 mph
12 PM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 47%
UV Index: 7
Wind: 8 mph
1 PM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 44%
UV Index: 8
Wind: 9 mph
2 PM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 42%
UV Index: 7
Wind: 10 mph
3 PM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 43%
UV Index: 5
Wind: 10 mph
4 PM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 45%
UV Index: 4
Wind: 9 mph
5 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 49%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 53%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
68°
Feels Like 66°
0
Humidity: 60%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 68%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 74%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 80%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 82%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
70 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 12.08 µg/m³
  • PM10: 27.35 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 AM
68 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 11.31 µg/m³
  • PM10: 26.91 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 AM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.61 µg/m³
  • PM10: 26.56 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 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.

9 AM
60 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 10.02 µg/m³
  • PM10: 26.13 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 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.

10 AM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.62 µg/m³
  • PM10: 25.81 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.3 ppb
  • SO2: 0.5 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.

11 AM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.3 µg/m³
  • PM10: 25.44 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 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.

12 PM
59 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.92 µg/m³
  • PM10: 24.63 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 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.

1 PM
62 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.7 µg/m³
  • PM10: 23.94 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.1 ppb
  • SO2: 0.5 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.

2 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.64 µg/m³
  • PM10: 23.48 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 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.

3 PM
68 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.5 µg/m³
  • PM10: 23.03 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.1 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.

4 PM
68 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.19 µg/m³
  • PM10: 22.8 µg/m³
  • O3: 0.060 ppm
  • NO2: 0.1 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.

5 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.77 µg/m³
  • PM10: 22.53 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.1 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.

6 PM
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.32 µg/m³
  • PM10: 22.06 µg/m³
  • O3: 0.059 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.

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

Pollutant Concentrations:

  • PM2.5: 6.89 µg/m³
  • PM10: 21.43 µg/m³
  • O3: 0.059 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
65 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.6 µg/m³
  • PM10: 20.9 µg/m³
  • O3: 0.059 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.

9 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 20.74 µg/m³
  • O3: 0.059 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.

10 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.51 µg/m³
  • PM10: 21.06 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 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.

11 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.62 µg/m³
  • PM10: 21.72 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.2 ppb
  • SO2: 0.5 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.