Monday, Tuesday and Wednesday. Three consecutive days without a federal ozone violation.

When was the last time that happened in the San Joaquin Valley? Last year. State records show it happened on Aug. 5, 6 and 7 last year.

In the last 10 years, there was a similar three-day run in 2004. There also was a six-day run of healthy August air in 1999.

But the Valley also is known for having long runs of bad-air days in September.