Hourly Weather | Today Thursday, February 26, 2026
Pasadena, California
1 AM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
2 AM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
3 AM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
4 AM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 76%
UV Index: 0
Wind: 5 mph
5 AM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
6 AM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 79%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 70%
UV Index: 1
Wind: 5 mph
8 AM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 65%
UV Index: 2
Wind: 5 mph
9 AM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 57%
UV Index: 3
Wind: 5 mph
10 AM
Cloudy Weather
72°
Feels Like 77°
0
Humidity: 51%
UV Index: 4
Wind: 5 mph
11 AM
Sunny Weather
75°
Feels Like 81°
0
Humidity: 45%
UV Index: 4
Wind: 6 mph
12 PM
Sunny Weather
79°
Feels Like 84°
0
Humidity: 40%
UV Index: 5
Wind: 6 mph
1 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 38%
UV Index: 4
Wind: 6 mph
2 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 36%
UV Index: 4
Wind: 6 mph
3 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 37%
UV Index: 3
Wind: 6 mph
4 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 39%
UV Index: 2
Wind: 6 mph
5 PM
Sunny Weather
79°
Feels Like 77°
0
Humidity: 44%
UV Index: 1
Wind: 6 mph
6 PM
Night
75°
Feels Like 73°
0
Humidity: 49%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 54%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 59%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 58%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 59%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.94 µg/m³
  • PM10: 11.53 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

2 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.07 µg/m³
  • PM10: 11.73 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

3 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 11.9 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.48 µg/m³
  • PM10: 12.07 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.78 µg/m³
  • PM10: 12.36 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.22 µg/m³
  • PM10: 12.86 µg/m³
  • O3: 0.030 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.75 µg/m³
  • PM10: 13.51 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
30 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.3 µg/m³
  • PM10: 14.07 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.94 µg/m³
  • PM10: 14.59 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 AM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.85 µg/m³
  • PM10: 15.4 µg/m³
  • O3: 0.032 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 AM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.06 µg/m³
  • PM10: 16.66 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

12 PM
47 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.29 µg/m³
  • PM10: 18.04 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

1 PM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.22 µg/m³
  • PM10: 19.2 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

2 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.73 µg/m³
  • PM10: 20.02 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 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
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.94 µg/m³
  • PM10: 20.48 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

4 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.02 µg/m³
  • PM10: 20.78 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

5 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.11 µg/m³
  • PM10: 21.01 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

6 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13 µg/m³
  • PM10: 20.89 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.77 µg/m³
  • PM10: 20.62 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.72 µg/m³
  • PM10: 20.53 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.73 µg/m³
  • PM10: 20.48 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 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: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.65 µg/m³
  • PM10: 20.33 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.4 µg/m³
  • PM10: 19.98 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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