Hourly Weather | Today Thursday, December 11, 2025
San Diego, California
11 AM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 44%
Wind: 6 mph
UV Index: 3
12 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 42%
Wind: 7 mph
UV Index: 3
1 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 46%
Wind: 7 mph
UV Index: 3
2 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 49%
Wind: 7 mph
UV Index: 2
3 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 56%
Wind: 6 mph
UV Index: 2
4 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 63%
Wind: 6 mph
UV Index: 1
5 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 72%
Wind: 5 mph
UV Index: 0
6 PM
Cloudy Night
61°
Feels Like 63°
0
Humidity: 79%
Wind: 4 mph
UV Index: 0
7 PM
Cloudy Night
57°
Feels Like 59°
0
Humidity: 86%
Wind: 2 mph
UV Index: 0
8 PM
Cloudy Night
55°
Feels Like 57°
0
Humidity: 86%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 91%
Wind: 4 mph
UV Index: 0
10 PM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 87%
Wind: 4 mph
UV Index: 0
11 PM
Cloudy Night
55°
Feels Like 55°
0
Humidity: 83%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
120 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 43.25 µg/m³
  • PM10: 49.7 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.29 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

12 PM
112 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.19 µg/m³
  • PM10: 46.43 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

1 PM
103 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.77 µg/m³
  • PM10: 42.94 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.24 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

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

Pollutant Concentrations:

  • PM2.5: 32.12 µg/m³
  • PM10: 38.16 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 27.18 µg/m³
  • PM10: 33.06 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 23.27 µg/m³
  • PM10: 29.12 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 20.78 µg/m³
  • PM10: 26.59 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 19.31 µg/m³
  • PM10: 25.01 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.42 µg/m³
  • PM10: 24 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.06 µg/m³
  • PM10: 23.53 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.8 µg/m³
  • PM10: 23.25 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.43 µg/m³
  • PM10: 22.9 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 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
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.9 µg/m³
  • PM10: 22.43 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 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.