kari weather tease mike traffic tease >>> it is 5:43. a spare the air alert day. that means carpool, catch public transit, bike to work. if you're going to make your way to the dublin b.a.r.t. station, it's going to be cool. dublin temperatures go from the upper 50s to 87 degrees at noon. a fast warmup, and a time for poor air quality. we'll talk about what to expect heading into the weekend in about five minutes. >> we're looking at the san mateo bridge. tapping the brake lights westbound. that's the commute direction. it moves smoothly, but i did find a new jam over there approaching the bay bridge. we'll show you that coming up. >>> well, new this morning, if you're sick but not sure if you have the flu, maybe you have a cold. an east bay company has created an at-home flu test. >> they're out of emeryville, and this is how it works. you swab your nose and put the swab in a device that can detect the virus. you'll know in about 20 minutes if you're infected. if positive, an app connects you to a doctor who can help prescribe medicine. >> instead of people going