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Hourly Weather | Today | Monday, August 11, 2025
Pasadena, California
11 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
81°
Feels Like 88°
0
Humidity: 52%
Wind: 6 mph
UV Index: 7
12 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
84°
Feels Like 91°
0
Humidity: 45%
Wind: 7 mph
UV Index: 9
1 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 93°
0
Humidity: 42%
Wind: 7 mph
UV Index: 10
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 97°
0
Humidity: 39%
Wind: 8 mph
UV Index: 9
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
91°
Feels Like 95°
0
Humidity: 37%
Wind: 8 mph
UV Index: 7
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 91°
0
Humidity: 39%
Wind: 8 mph
UV Index: 4
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 90°
0
Humidity: 41%
Wind: 8 mph
UV Index: 3
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
84°
Feels Like 86°
0
Humidity: 44%
Wind: 7 mph
UV Index: 2
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 82°
0
Humidity: 48%
Wind: 6 mph
UV Index: 1
8 PM
NightNighttime, with dark skies and stars or a moon visible.
81°
Feels Like 79°
0
Humidity: 55%
Wind: 6 mph
UV Index: 0
9 PM
NightNighttime, with dark skies and stars or a moon visible.
77°
Feels Like 75°
0
Humidity: 62%
Wind: 6 mph
UV Index: 0
10 PM
NightNighttime, with dark skies and stars or a moon visible.
73°
Feels Like 72°
0
Humidity: 70%
Wind: 5 mph
UV Index: 0
11 PM
NightNighttime, with dark skies and stars or a moon visible.
72°
Feels Like 72°
0
Humidity: 74%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
66 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 24.14 µg/m³
  • PM10: 30.62 µg/m³
  • O₃: 43.74 ppb
  • NO₂: 14.83 ppb
  • SO₂: 4.84 ppb
  • CO: 269.68 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

12 PM
66 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 23.41 µg/m³
  • PM10: 28.81 µg/m³
  • O₃: 49.13 ppb
  • NO₂: 14.00 ppb
  • SO₂: 5.05 ppb
  • CO: 252.58 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

1 PM
67 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 24.35 µg/m³
  • PM10: 27.24 µg/m³
  • O₃: 62.64 ppb
  • NO₂: 12.72 ppb
  • SO₂: 6.07 ppb
  • CO: 223.73 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

2 PM
67 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 24.03 µg/m³
  • PM10: 26.43 µg/m³
  • O₃: 67.12 ppb
  • NO₂: 11.76 ppb
  • SO₂: 6.09 ppb
  • CO: 204.86 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

3 PM
68 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 24.36 µg/m³
  • PM10: 26.45 µg/m³
  • O₃: 67.60 ppb
  • NO₂: 11.90 ppb
  • SO₂: 6.36 ppb
  • CO: 203.85 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

4 PM
68 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 25.34 µg/m³
  • PM10: 27.31 µg/m³
  • O₃: 68.08 ppb
  • NO₂: 12.04 ppb
  • SO₂: 6.63 ppb
  • CO: 202.84 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

5 PM
69 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 26.58 µg/m³
  • PM10: 28.55 µg/m³
  • O₃: 68.56 ppb
  • NO₂: 12.18 ppb
  • SO₂: 6.90 ppb
  • CO: 201.83 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

6 PM
70 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 27.71 µg/m³
  • PM10: 29.67 µg/m³
  • O₃: 61.13 ppb
  • NO₂: 15.68 ppb
  • SO₂: 7.04 ppb
  • CO: 222.11 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

7 PM
74 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 28.75 µg/m³
  • PM10: 30.79 µg/m³
  • O₃: 53.70 ppb
  • NO₂: 19.18 ppb
  • SO₂: 7.19 ppb
  • CO: 242.39 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

8 PM
73 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 30.47 µg/m³
  • PM10: 32.24 µg/m³
  • O₃: 46.26 ppb
  • NO₂: 22.68 ppb
  • SO₂: 7.33 ppb
  • CO: 262.67 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

9 PM
73 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 31.89 µg/m³
  • PM10: 33.47 µg/m³
  • O₃: 39.04 ppb
  • NO₂: 24.70 ppb
  • SO₂: 7.22 ppb
  • CO: 275.07 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

10 PM
74 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 32.23 µg/m³
  • PM10: 33.86 µg/m³
  • O₃: 31.82 ppb
  • NO₂: 26.72 ppb
  • SO₂: 7.12 ppb
  • CO: 287.47 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.

11 PM
75 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 32.58 µg/m³
  • PM10: 34.26 µg/m³
  • O₃: 24.60 ppb
  • NO₂: 28.75 ppb
  • SO₂: 7.01 ppb
  • CO: 299.87 ppb

Health Recommendations:

Air quality is acceptable. Individuals with unusual sensitivity may be at risk from certain pollutants.