Earlier this month, I wrote about the amazing lack of dirty air in July, calling it the best July in 20 years. Turns out, it was the best July on record, and I goofed.
The San Joaquin Valley Air Pollution Control District studied the same data and found the Valley had its fewest-ever July exceedances of the federal eight-hour ozone standard.
Once I looked at the data, I realized I was looking at the wrong ozone averages on the California Air Resources Board archive. I stand corrected.
Either way, it was an amazingly clean July. August appears to be cleaner than usual, but the air quality can change quickly in summer. Keep thinking about consolidating driving trips and checking the real-time air quality readings each day.