Air Quality Conditions
Updated: Saturday, April 21 2018 - 4:00 PM PDT
Moderate
Primary Pollutants
Ozone (O3), in parts per billion (ppb)
Fine Particulate Matter (PM 2.5), in micrograms per cubic meter (μg/m3)
Pollutant Type | Air Quality Level | Latest Concentration |
Ozone | Moderate | 60 ppb ![]() |
PM 2.5 | Good | 8 μg/m3 ![]() |

Air Quality Maps

Today's AQI Forecast

Hourly AQI (combined PM and Ozone)

Air Quality Index
Levels of Health Concern |
Numerical
Value |
Meaning
|
---|---|---|
Good | 0-50 | Air quality is considered satisfactory, and air pollution poses little or no risk. |
Moderate | 51-100 | Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution. |
Unhealthy for Sensitive Groups |
101-150 | Members of sensitive groups may experience health effects. The general public is not likely to be affected. |
Unhealthy | 151-200 | Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects. |
Very Unhealthy | 201-300 | Health alert: everyone may experience more serious health effects. |
Hazardous | > 300 | Health warnings of emergency conditions. The entire population is more likely to be affected. |