Hourly Weather | Today Tuesday, December 9, 2025
Fremont, California
6 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 83%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 88%
Wind: 5 mph
UV Index: 0
8 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 91%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
46°
Feels Like 45°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 92%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.07 µg/m³
  • PM10: 10.52 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.4 µg/m³
  • PM10: 10.95 µg/m³
  • O3: 0.036 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.4 µg/m³
  • PM10: 12.3 µg/m³
  • O3: 0.033 ppm
  • NO2: 6.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.82 µg/m³
  • PM10: 14.31 µg/m³
  • O3: 0.030 ppm
  • NO2: 8.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

10 PM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.35 µg/m³
  • PM10: 16.41 µg/m³
  • O3: 0.027 ppm
  • NO2: 10.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.98 µg/m³
  • PM10: 18.64 µg/m³
  • O3: 0.024 ppm
  • NO2: 11.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.21 ppm

Health Recommendations:

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