Hourly Weather | Today Sunday, January 18, 2026
Fremont, California
11 PM
Night
48°
Feels Like 45°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
109 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 38.95 µg/m³
  • PM10: 47.43 µg/m³
  • O3: 0.029 ppm
  • NO2: 9 ppb
  • SO2: 0.6 ppb
  • CO: 0.31 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.