When will Berkeley have bad air (>150 AQI) due to wildfire smoke this year?
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Nov 2
3%
Before July 1
3%
July 1 to 15
3%
July 16 to 31
3%
August 1 to 15
5%
August 16 to 31
3%
September 1 to 15
8%
September 16 to 30
8%
October 1 to 15
7%
October 16 to 31
55%
Not before November 1

This will resolve to the first date this summer or fall where there is a day of >150 PM2.5 AQI in Berkeley (as measured on PurpleAir), and there are news reports of wildfire smoke as the cause.

In 2023, my local sensor registered >150 AQI on September 20, following this report.

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