Air Quality Forecast

December 1 – December 5: Temperatures will be at or slightly above seasonal averages this week with lows in the mid-40s while highs will reach into the 60s throughout the forecast area. Daily impacts from early morning fog will clear by midday and leave partly cloudy skies. Precipitation is not expected despite high Relative Humidity of 70-90%. An inside slider will bring breezy conditions and high surf, creating hazardous conditions at upper elevations and along the coast. Gusty offshore winds may reach 23-35 mph while high ridge tops and passes may experience strong gusts up to 45 mph. As a result of seasonally cooler temperatures and unstable conditions, ozone levels should remain within State standards, therefore, the ozone AQI will remain GOOD. Although there will be unstable conditions and strong winds during the forecast periods, recent rains will likely keep the PM10 (dust) AQI  and  PM2.5 (smoke) AQI at GOOD.

Particulate Matter Sensor Network

Regulatory Air Monitoring Stations