❮
Today Hourly 7 days 30 days Air Quality
❯
Hourly Weather | Today › Thursday, February 26, 2026
Active Weather Warnings
Modesto, California
9 AM
Foggy Weather
61°
Feels Like 61°
0
Humidity: 86%
UV Index: 2
Wind: 7 mph
10 AM
Foggy Weather
63°
Feels Like 63°
0
Humidity: 82%
UV Index: 3
Wind: 8 mph
11 AM
Foggy Weather
64°
Feels Like 66°
0
Humidity: 76%
UV Index: 4
Wind: 9 mph
12 PM
Foggy Weather
66°
Feels Like 68°
0
Humidity: 73%
UV Index: 4
Wind: 9 mph
1 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 69%
UV Index: 4
Wind: 9 mph
2 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 66%
UV Index: 3
Wind: 10 mph
3 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 65%
UV Index: 2
Wind: 10 mph
4 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 63%
UV Index: 1
Wind: 10 mph
5 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 66%
UV Index: 1
Wind: 10 mph
6 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 68%
UV Index: 0
Wind: 9 mph
7 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 73%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 77%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 82%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 86%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 86%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 AM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.68 µg/m³
  • PM10: 16.35 µg/m³
  • O3: 0.006 ppm
  • NO2: 6.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

10 AM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.15 µg/m³
  • PM10: 18.73 µg/m³
  • O3: 0.010 ppm
  • NO2: 6.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

11 AM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.03 µg/m³
  • PM10: 13.4 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

12 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.2 µg/m³
  • PM10: 12.83 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

1 PM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.98 µg/m³
  • PM10: 14.27 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.64 µg/m³
  • PM10: 16.92 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 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.

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

Pollutant Concentrations:

  • PM2.5: 17.43 µg/m³
  • PM10: 21.06 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 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
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.8 µg/m³
  • PM10: 24.79 µg/m³
  • O3: 0.053 ppm
  • NO2: 3.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 23.14 µg/m³
  • PM10: 27.53 µg/m³
  • O3: 0.047 ppm
  • NO2: 5.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 24.39 µg/m³
  • PM10: 29.27 µg/m³
  • O3: 0.038 ppm
  • NO2: 7.5 ppb
  • SO2: 0.3 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
77 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.76 µg/m³
  • PM10: 30.15 µg/m³
  • O3: 0.032 ppm
  • NO2: 8.7 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 24.18 µg/m³
  • PM10: 30 µg/m³
  • O3: 0.029 ppm
  • NO2: 9 ppb
  • SO2: 0.2 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.

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

Pollutant Concentrations:

  • PM2.5: 23.92 µg/m³
  • PM10: 30.15 µg/m³
  • O3: 0.027 ppm
  • NO2: 8.9 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 24.2 µg/m³
  • PM10: 30.81 µg/m³
  • O3: 0.025 ppm
  • NO2: 8.9 ppb
  • SO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 24.78 µg/m³
  • PM10: 31.68 µg/m³
  • O3: 0.023 ppm
  • NO2: 8.8 ppb
  • SO2: 0.2 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.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Modesto

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued February 26 at 2:20AM PST until February 26 at 10:00AM PST by NWS Sacramento CA
Feb 26, 2:20 AM → Feb 26, 10:00 AM
WHAT: Visibility one quarter mile or less in dense fog.

WHERE: Northern San Joaquin Valley and Southern Sacramento Valley.

WHEN: Until 10 AM PST this morning.

IMPACTS: Low visibility could make driving conditions hazardous.
+ Read More
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Updated: Feb 26, 7:36 AM Source: NWS Alert