Hourly Weather | Today Thursday, February 5, 2026
San Leandro, California
8 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 67%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 78%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 81%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 83%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 PM
129 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 46.87 µg/m³
  • PM10: 50.6 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

9 PM
126 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 45.69 µg/m³
  • PM10: 49.73 µg/m³
  • O3: 0.049 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

10 PM
126 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 45.61 µg/m³
  • PM10: 50.43 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 44.09 µg/m³
  • PM10: 49.57 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.29 ppm

Health Recommendations:

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