On Sunday, March 11, a brush fire struck in the Anaheim Hills area. It was controlled relatively quickly, and by the next morning, the smoke had settled into a blanket of haze over Orange County.

Layer of haze in front of hills

For contrast, here’s a shot from a few weeks earlier (February 23), when it was unusually clear. This was taken from a park in the Quail Hill area of Irvine, looking across the Saddleback Valley from the south toward the same range of hills seen on the left of the picture above.

Quail Hill View