Hourly Weather | Today Tuesday, January 13, 2026
El Cajon, California
3 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 21%
Wind: 6 mph
UV Index: 2
4 PM
Sunny Weather
73°
Feels Like 72°
0
Humidity: 27%
Wind: 6 mph
UV Index: 1
5 PM
Sunny Weather
70°
Feels Like 66°
0
Humidity: 32%
Wind: 6 mph
UV Index: 0
6 PM
Night
64°
Feels Like 64°
0
Humidity: 38%
Wind: 6 mph
UV Index: 0
7 PM
Night
63°
Feels Like 61°
0
Humidity: 47%
Wind: 6 mph
UV Index: 0
8 PM
Night
59°
Feels Like 57°
0
Humidity: 50%
Wind: 6 mph
UV Index: 0
9 PM
Night
55°
Feels Like 54°
0
Humidity: 53%
Wind: 6 mph
UV Index: 0
10 PM
Night
54°
Feels Like 52°
0
Humidity: 57%
Wind: 6 mph
UV Index: 0
11 PM
Night
52°
Feels Like 48°
0
Humidity: 59%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 18.34 µg/m³
  • PM10: 28.69 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 19.76 µg/m³
  • PM10: 30.67 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 20.43 µg/m³
  • PM10: 31.76 µg/m³
  • O3: 0.057 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.29 µg/m³
  • PM10: 32.73 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 22.82 µg/m³
  • PM10: 34.26 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 24.74 µg/m³
  • PM10: 36.1 µg/m³
  • O3: 0.060 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 27.21 µg/m³
  • PM10: 38.56 µg/m³
  • O3: 0.060 ppm
  • NO2: 1.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 30.47 µg/m³
  • PM10: 41.93 µg/m³
  • O3: 0.060 ppm
  • NO2: 1.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 33.85 µg/m³
  • PM10: 45.56 µg/m³
  • O3: 0.060 ppm
  • NO2: 1.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.29 ppm

Health Recommendations:

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