Hourly Weather | Today Sunday, October 19, 2025
El Cajon, California
9 AM
Cloudy Weather
64°
Feels Like 68°
0
Humidity: 40%
Wind: 4 mph
UV Index: 15
10 AM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 32%
Wind: 5 mph
UV Index: 24
11 AM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 28%
Wind: 6 mph
UV Index: 35
12 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 27%
Wind: 7 mph
UV Index: 42
1 PM
Cloudy Weather
84°
Feels Like 88°
0
Humidity: 26%
Wind: 8 mph
UV Index: 45
2 PM
Cloudy Weather
88°
Feels Like 90°
0
Humidity: 25%
Wind: 8 mph
UV Index: 42
3 PM
Cloudy Weather
84°
Feels Like 88°
0
Humidity: 28%
Wind: 8 mph
UV Index: 35
4 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 29%
Wind: 8 mph
UV Index: 24
5 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 33%
Wind: 7 mph
UV Index: 15
6 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 39%
Wind: 6 mph
UV Index: 5
7 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 47%
Wind: 5 mph
UV Index: 0
8 PM
Night
70°
Feels Like 66°
0
Humidity: 56%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 62%
Wind: 4 mph
UV Index: 0
10 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 67%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 73%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.52 µg/m³
  • PM10: 22.19 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.1 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.

10 AM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.94 µg/m³
  • PM10: 22.47 µg/m³
  • O3: 0.039 ppm
  • NO2: 1 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.

11 AM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.5 µg/m³
  • PM10: 22.94 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 18 µg/m³
  • PM10: 23.41 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 18.37 µg/m³
  • PM10: 23.98 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 18.73 µg/m³
  • PM10: 24.72 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 19.04 µg/m³
  • PM10: 25.46 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 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
65 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.97 µg/m³
  • PM10: 25.73 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 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
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.61 µg/m³
  • PM10: 25.7 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 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
63 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.99 µg/m³
  • PM10: 25.27 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 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
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.35 µg/m³
  • PM10: 24.8 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 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
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.85 µg/m³
  • PM10: 24.5 µg/m³
  • O3: 0.050 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.

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

Pollutant Concentrations:

  • PM2.5: 16.52 µg/m³
  • PM10: 24.3 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 16.34 µg/m³
  • PM10: 24.17 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 16.24 µg/m³
  • PM10: 24.1 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.5 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.