Hourly Weather | Today Thursday, December 4, 2025
El Monte, California
3 AM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 59%
Wind: 4 mph
UV Index: 0
4 AM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 57%
Wind: 5 mph
UV Index: 0
5 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 57%
Wind: 5 mph
UV Index: 0
6 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 58%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 49%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 45%
Wind: 5 mph
UV Index: 1
9 AM
Cloudy Weather
57°
Feels Like 61°
0
Humidity: 37%
Wind: 5 mph
UV Index: 2
10 AM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 32%
Wind: 5 mph
UV Index: 2
11 AM
Cloudy Weather
66°
Feels Like 70°
0
Humidity: 27%
Wind: 5 mph
UV Index: 3
12 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 24%
Wind: 5 mph
UV Index: 3
1 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 22%
Wind: 6 mph
UV Index: 3
2 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 21%
Wind: 5 mph
UV Index: 2
3 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 23%
Wind: 5 mph
UV Index: 2
4 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 25%
Wind: 5 mph
UV Index: 1
5 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 31%
Wind: 5 mph
UV Index: 0
6 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 36%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 40%
Wind: 5 mph
UV Index: 0
8 PM
Night
57°
Feels Like 55°
0
Humidity: 44%
Wind: 5 mph
UV Index: 0
9 PM
Night
55°
Feels Like 55°
0
Humidity: 45%
Wind: 5 mph
UV Index: 0
10 PM
Night
55°
Feels Like 54°
0
Humidity: 45%
Wind: 6 mph
UV Index: 0
11 PM
Night
54°
Feels Like 54°
0
Humidity: 44%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
84 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 27.78 µg/m³
  • PM10: 39.5 µg/m³
  • O3: 0.031 ppm
  • NO2: 14.9 ppb
  • SO2: 2.9 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.

4 AM
81 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.38 µg/m³
  • PM10: 38.3 µg/m³
  • O3: 0.028 ppm
  • NO2: 16.2 ppb
  • SO2: 2.9 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 24 µg/m³
  • PM10: 35.78 µg/m³
  • O3: 0.026 ppm
  • NO2: 15.8 ppb
  • SO2: 2.6 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.14 µg/m³
  • PM10: 32.52 µg/m³
  • O3: 0.026 ppm
  • NO2: 14.6 ppb
  • SO2: 2.3 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.

7 AM
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.54 µg/m³
  • PM10: 29.52 µg/m³
  • O3: 0.027 ppm
  • NO2: 13 ppb
  • SO2: 2 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.

8 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.9 µg/m³
  • PM10: 26.43 µg/m³
  • O3: 0.030 ppm
  • NO2: 11.8 ppb
  • SO2: 1.7 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.

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

Pollutant Concentrations:

  • PM2.5: 13.54 µg/m³
  • PM10: 23.73 µg/m³
  • O3: 0.034 ppm
  • NO2: 9.7 ppb
  • SO2: 1.5 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.

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

Pollutant Concentrations:

  • PM2.5: 12.78 µg/m³
  • PM10: 22.9 µg/m³
  • O3: 0.038 ppm
  • NO2: 8.5 ppb
  • SO2: 1.5 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.

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

Pollutant Concentrations:

  • PM2.5: 13.11 µg/m³
  • PM10: 23.32 µg/m³
  • O3: 0.041 ppm
  • NO2: 8.4 ppb
  • SO2: 1.5 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.56 µg/m³
  • PM10: 24.94 µg/m³
  • O3: 0.045 ppm
  • NO2: 8.6 ppb
  • SO2: 1.7 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 17.2 µg/m³
  • PM10: 27.7 µg/m³
  • O3: 0.050 ppm
  • NO2: 8.8 ppb
  • SO2: 1.9 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.

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

Pollutant Concentrations:

  • PM2.5: 20.9 µg/m³
  • PM10: 31.49 µg/m³
  • O3: 0.053 ppm
  • NO2: 9.5 ppb
  • SO2: 2.2 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.

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

Pollutant Concentrations:

  • PM2.5: 23.32 µg/m³
  • PM10: 34.01 µg/m³
  • O3: 0.055 ppm
  • NO2: 10.5 ppb
  • SO2: 2.3 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.

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

Pollutant Concentrations:

  • PM2.5: 23.76 µg/m³
  • PM10: 34.36 µg/m³
  • O3: 0.054 ppm
  • NO2: 11.2 ppb
  • SO2: 2.2 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
73 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 22.6 µg/m³
  • PM10: 32.86 µg/m³
  • O3: 0.053 ppm
  • NO2: 10.6 ppb
  • SO2: 2.1 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.

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

Pollutant Concentrations:

  • PM2.5: 21.11 µg/m³
  • PM10: 31.02 µg/m³
  • O3: 0.051 ppm
  • NO2: 8.2 ppb
  • SO2: 1.9 ppb
  • CO: 0.23 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: 18.73 µg/m³
  • PM10: 28.22 µg/m³
  • O3: 0.051 ppm
  • NO2: 6 ppb
  • SO2: 1.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 15.23 µg/m³
  • PM10: 23.9 µg/m³
  • O3: 0.050 ppm
  • NO2: 4.2 ppb
  • SO2: 1.4 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.

9 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.43 µg/m³
  • PM10: 18.64 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.7 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

10 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.35 µg/m³
  • PM10: 13.79 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.83 µg/m³
  • PM10: 10.61 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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