Hourly Weather | Today Thursday, December 4, 2025
Modesto, California
3 AM
Foggy Weather
41°
Feels Like 37°
0
Humidity: 92%
Wind: 6 mph
UV Index: 0
4 AM
Foggy Weather
39°
Feels Like 37°
0
Humidity: 95%
Wind: 6 mph
UV Index: 0
5 AM
Foggy Weather
39°
Feels Like 36°
0
Humidity: 99%
Wind: 5 mph
UV Index: 0
6 AM
Foggy Weather
37°
Feels Like 36°
0
Humidity: 99%
Wind: 5 mph
UV Index: 0
7 AM
Foggy Weather
39°
Feels Like 37°
0
Humidity: 95%
Wind: 4 mph
UV Index: 0
8 AM
Foggy Weather
39°
Feels Like 43°
0
Humidity: 93%
Wind: 4 mph
UV Index: 1
9 AM
Foggy Weather
43°
Feels Like 45°
0
Humidity: 91%
Wind: 4 mph
UV Index: 1
10 AM
Foggy Weather
45°
Feels Like 48°
0
Humidity: 87%
Wind: 4 mph
UV Index: 2
11 AM
Foggy Weather
46°
Feels Like 52°
0
Humidity: 81%
Wind: 4 mph
UV Index: 2
12 PM
Foggy Weather
46°
Feels Like 54°
0
Humidity: 77%
Wind: 4 mph
UV Index: 3
1 PM
Cloudy Weather
48°
Feels Like 55°
0
Humidity: 75%
Wind: 4 mph
UV Index: 2
2 PM
Cloudy Weather
50°
Feels Like 55°
0
Humidity: 71%
Wind: 4 mph
UV Index: 2
3 PM
Cloudy Weather
52°
Feels Like 55°
0
Humidity: 69%
Wind: 4 mph
UV Index: 1
4 PM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 67%
Wind: 5 mph
UV Index: 1
5 PM
Cloudy Night
50°
Feels Like 50°
0
Humidity: 73%
Wind: 4 mph
UV Index: 0
6 PM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 79%
Wind: 4 mph
UV Index: 0
7 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 84%
Wind: 4 mph
UV Index: 0
8 PM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 89%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Night
43°
Feels Like 45°
0
Humidity: 93%
Wind: 4 mph
UV Index: 0
10 PM
Cloudy Night
43°
Feels Like 43°
0
Humidity: 95%
Wind: 4 mph
UV Index: 0
11 PM
Cloudy Night
43°
Feels Like 43°
0
Humidity: 96%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 25.45 µg/m³
  • PM10: 32.31 µg/m³
  • O3: 0.009 ppm
  • NO2: 13.7 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 26.5 µg/m³
  • PM10: 33.14 µg/m³
  • O3: 0.009 ppm
  • NO2: 12.2 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 27.19 µg/m³
  • PM10: 33.7 µg/m³
  • O3: 0.010 ppm
  • NO2: 11.3 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 27.8 µg/m³
  • PM10: 34.25 µg/m³
  • O3: 0.010 ppm
  • NO2: 10.8 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 28.85 µg/m³
  • PM10: 35.41 µg/m³
  • O3: 0.010 ppm
  • NO2: 10.9 ppb
  • SO2: 0.3 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
87 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 29.34 µg/m³
  • PM10: 35.97 µg/m³
  • O3: 0.009 ppm
  • NO2: 10.7 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 28.89 µg/m³
  • PM10: 35.55 µg/m³
  • O3: 0.012 ppm
  • NO2: 8.1 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 28.19 µg/m³
  • PM10: 34.87 µg/m³
  • O3: 0.015 ppm
  • NO2: 6.6 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 22.99 µg/m³
  • PM10: 29.02 µg/m³
  • O3: 0.028 ppm
  • NO2: 4.7 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 20.77 µg/m³
  • PM10: 26.45 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.8 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 20.82 µg/m³
  • PM10: 26.37 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.3 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 21.35 µg/m³
  • PM10: 26.97 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.6 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 22.08 µg/m³
  • PM10: 27.99 µg/m³
  • O3: 0.041 ppm
  • NO2: 4.6 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 22.49 µg/m³
  • PM10: 28.85 µg/m³
  • O3: 0.039 ppm
  • NO2: 6.5 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 22.28 µg/m³
  • PM10: 29.09 µg/m³
  • O3: 0.033 ppm
  • NO2: 9.8 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
74 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 23.16 µg/m³
  • PM10: 30.59 µg/m³
  • O3: 0.027 ppm
  • NO2: 12.7 ppb
  • SO2: 0.4 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.

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

Pollutant Concentrations:

  • PM2.5: 25.56 µg/m³
  • PM10: 33.8 µg/m³
  • O3: 0.022 ppm
  • NO2: 15.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.31 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 28.35 µg/m³
  • PM10: 37.29 µg/m³
  • O3: 0.018 ppm
  • NO2: 17.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.33 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 30.42 µg/m³
  • PM10: 40.13 µg/m³
  • O3: 0.015 ppm
  • NO2: 18.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.35 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 32.53 µg/m³
  • PM10: 43.07 µg/m³
  • O3: 0.012 ppm
  • NO2: 21 ppb
  • SO2: 0.4 ppb
  • CO: 0.37 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 34.35 µg/m³
  • PM10: 45.61 µg/m³
  • O3: 0.010 ppm
  • NO2: 22.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.39 ppm

Health Recommendations:

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