Since yesterday morning, Pink Floyd's "Breathe" has been on my mind. Although I like the tune, the trigger for it was unfortunate. One forecast yesterday predicted poor air quality, which I wasn't used to reading. Seeking a more optimistic second opinion, I consulted weather.com. That site predicted moderate air quality. Knowing that the average of those estimates was approximately a C- made me not want to "breathe, breathe in the air," as the song advises.