Smoke remained trapped underneath subsidence inversions up and down the state today, causing elevated concentrations registering at most monitors, even in the Central Valley hundreds of miles away from sources. Fires in the Six Rivers and Shasta Trinity National Forests were largely the source of smoke in areas north of Sacramento, while most impacts south of Yosemite were mostly due to the Rough Fire.
Though the localized smoke impacts near the fires will continue (e.g., the Unhealthy to Hazardous levels seen in the Shasta/Trinity area, and in the Kings Canyon), conditions farther away from the fires will likely improve as light SW winds move in. Currently these fires are combining to emit thousands of tons of fine particles (PM2.5) into the atmosphere, so changes in fire activity under these hot, dry conditions will also affect smoke impacts, and may negate improvements in dispersion.
For the latest and more specifics for your area, look to the air resource advisor posts for the fire affecting your area on this page.
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