
A Spare the Air Alert or Winter Spare the Air Alert is called the day before air quality is forecast to be unhealthy in any one of the reporting zones. An alert may span over two days if air quality is expected to remain unhealthy. Concerned by the air quality ? We use cookies on this site to improve your experience as explained in our Cookie Policy. Current Air Quality Index (AQI) Conditions - California Cities.
San Francisco , Calif. Please select a city for detailed current conditions and forecasts. Available daily forecasts include: Five-day air quality forecasts , which use the U. Air District meteorologists issue daily forecasts for air quality.
EPA’s Air Quality Index. Public comments and suggestions are encouraged. Always Have Access to. That’s even worse than Thursday’s average of 1and more than twice as bad as Wednesday’s 78. Bay City News Service.

Summary, Cleanest Time of Day, and Hourly Forecasts. Cloudy through mid morning, then gradual clearing, with a high near 68. New precipitation amounts of less than a tenth of an inch possible.
NOAA and the Environmental Protection Agency (EPA) partner in developing a national Air Quality Forecast (AQF) System. The goal of this partnership is to provide ozone, particulate matter, and other pollutant forecasts with enough accuracy and advance notice for people to take action to prevent or.




