Air Quality Forecast

July 13 – July 17: A high-pressure system over the Rockies is carrying monsoon moisture a clockwise pattern through Southern California and up into our area. This push is enhanced by a low-pressure trough over the Eastern Pacific, creating instability driven by high surface temperatures and a slight chance of thunderstorms through Tuesday morning. Then, the moisture will begin to dry out midweek and temperatures will rise to a few degrees above seasonal averages, especially inland. The coast will be cooled by onshore winds and a weak cold front as the offshore low arrives heading into the weekend. Highs along the coast will fluctuate between the low 70s to mid-80s, but clear skies will warm inland areas into the 90s. Overnight lows will be in the mid-50s to low 60s. PM10 (dust) AQIs should remain GOOD for most areas, but moderate wind speeds between 5-15 mph through dry agricultural corridors may kick up dust and elevate localized AQIs to MODERATE. Unstable conditions earlier in the week will help ventilate the atmosphere and help keep PM2.5 (smoke) AQIs at GOOD. Ozone levels should also remain below State standards and therefore ozone AQIs will remain GOOD.

MBARD Smoke Sensor Network

 

Regulatory Air Monitoring Stations