A dense fog advisory is in effect for the coastal regions of San Luis Obispo and Santa Barbara through 9:00 a.m. Thursday. The advisory impacts Highways 1, 101, 246, and 154 as visibility could be limited to one-quarter mile or less. Commuters should use their low beams, increase following distance, and consider decreasing speed while driving through the impacted areas Thursday morning.
According to the San Luis Obispo County Air Pollution Control District, air quality has improved from moderate levels to good. This means that the smoke in the atmosphere across the county will not be as thick, but it will still be present. For Santa Barbara County, air quality levels will be good to moderate.
Daytime highs are still continuing to trend down by a few degrees Thursday. The smoke that is in the atmosphere could actually help with that process. Daytime highs across the inland valleys could stay close to the mid to upper 80s while the coastal valleys will mostly be in the 70s. At the coast, the marine layer could influence daytime highs and keep temperatures capped right around the low to mid-60s.