Hourly Weather | Today Saturday, September 6, 2025
Active Weather Warnings
Modesto, California
8 PM
Night
77°
Feels Like 73°
0
Humidity: 43%
Wind: 12 mph
UV Index: 0
9 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 51%
Wind: 10 mph
UV Index: 0
10 PM
Cloudy Night
72°
Feels Like 68°
0
Humidity: 56%
Wind: 10 mph
UV Index: 0
11 PM
Cloudy Night
68°
Feels Like 64°
0
Humidity: 62%
Wind: 9 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

8 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.08 µg/m³
  • PM10: 59.30 µg/m³
  • O₃: 47.37 ppb
  • NO₂: 4.89 ppb
  • SO₂: 0.84 ppb
  • CO: 150.41 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.70 µg/m³
  • PM10: 53.98 µg/m³
  • O₃: 41.10 ppb
  • NO₂: 5.59 ppb
  • SO₂: 0.82 ppb
  • CO: 149.26 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.53 µg/m³
  • PM10: 46.26 µg/m³
  • O₃: 34.82 ppb
  • NO₂: 6.29 ppb
  • SO₂: 0.80 ppb
  • CO: 148.12 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
60 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.81 µg/m³
  • PM10: 39.96 µg/m³
  • O₃: 28.55 ppb
  • NO₂: 6.99 ppb
  • SO₂: 0.79 ppb
  • CO: 146.98 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

Weather Alerts and Warnings for Modesto

Air Quality Alert

Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA
Sep 3, 4:06 PM Sep 10, 4:15 PM
The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties.

This Air Quality Alert is in effect until the fires are extinguished.

Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections.

Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality.

Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate.

For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500

Residents can also follow air quality conditions by downloading
the free Valley Air app, available in the Apple store or Google
Play.
Updated: Sep 6, 6:35 PM Source: NWS Alert