Just a few days ago, you couldn't hide from corrosive air.

Ozone monitors were showing violations almost everywhere and almost anytime there was sunlight. But Monday the air was healthy in the San Joaquin Valley -- first time since the Fourth of July.

As I'm writing this, it is 65 degrees at Fresno Air Terminal. The state shows an ozone level that would seem more normal in early April.

These kinds of August reprieves are not unusual. Last year, Aug. 6 and 7 were in the 80s. And we all breathed easier.

Is there any doubt that weather plays a major role?