Air Quality Forecast

March 23 – March 27: Temperatures will slightly cool from last week’s record-breaking heatwave, but highs will remain 10-15 degrees above normal. Upper 70s to low 80s is expected across the interior and 60 to 70s along the coastline. Low temperatures will be in the 50s throughout the region. Models are not showing any indication of precipitation this week, and the next rainfall isn’t expected until the beginning of April. The continuing stable atmosphere will keep winds calm so PM10 (dust) AQIs should remain at GOOD. However, reduced ventilation may increase PM2.5 (smoke) AQIs to MODERATE-UNHEALTHY FOR SENSITIVE GROUPS, particularly in the San Lorenzo Valley and other communities where wood smoke from home heating tends to accumulate overnight. Ozone levels should remain below State standards and therefore ozone AQIs will remain GOOD.

Particulate Matter Sensor Network

 

Regulatory Air Monitoring Stations