Unhealthy air conditions have pushed back the eighth annual Walk to End Alzheimer’s until Oct. 15.

The walk had been scheduled for Saturday, Sept. 9 in Columbia Park in Kennewick.

The three-mile walk is one of 16 walks throughout Washington and northern Idaho. It starts at the band shell.

The national nonprofit Alzheimer’s Association expects to raise $2 million, up from $1.7 million raised last year, at the series of Northwest walks. Last year, the Tri-City walk raised $118,000.

Those who plan to register the day of the October event should arrive at 12:30 p.m. A short ceremony begins at 1:45 p.m. The walk kicks off at 2 p.m.

More information about the Walk to End Alzheimer’s can be found at http://act.alz.org/ or by calling 509-456-0456, ext. 8311.