Here's how wildfires up north are affecting people in Merced County

Smoke triggers air quality advisory today

Take it easy: Smoke from Northern California fires is choking Valley air

"The health caution will remain in place and smoke impacts will continue until the fires are extinguished", officials said in a statement.

The Lion Fire in the Sierra of far eastern Tulare County, caused by a lightning strike September 24, had grown to 12,980 acres by Wednesday. The estimated containment date is on November 27. The Redwood Complex fire in Mendocino County has burned at least 29,000 acres.

Earlier accounts from fire officials were corrected on Wednesday by Merced County CalFire officials, who said no grass was burned at the former air base, according to Battalion Chief Brian Neely.

Older adults, pregnant women, children, and people with preexisting respiratory and heart conditions should take proper care of their health as they might get sick if they breathe in wildfire smoke. Other suggestions include staying indoors with windows and doors closed as much as possible and shutting off fans that bring smokey outdoor air inside.

As of Wednesday afternoon, the Air Quality (AQI) ranked San Francisco air as "unhealthy for sensitive groups" (the orange parts of the map) and predicts "unhealthy" (crimson red) for Thursday.

San Francisco officials said that hospitals have already started receiving patients for respiratory issues that are likely related to the smoke from the wildfires, San Francisco Chronicle reported.

Firefighters from across California and neighboring states are working feverishly to contain the fires that have resulted in multiple casualties and destroyed more than 2,000 structures.

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