A quick survey of a handful of cannabis dispensaries didn’t turn up much in the way of an explanation. One shop said they were seeing more middle-aged and senior buyers as marijuana becomes more socially acceptable.

“It’s a friendly and good time” to be in the marijuana business, said Kristi Kelly, executive director of the Marijuana Industry Group.

Presidential candidates are talking about marijuana legalization, there’s strong state support starting with Gov. Jared Polis and consumer confidence in the product is rising. All in all, cannabis has become much more mainstream.

The effect seems to touch nearly every corner of the state. Every large and small county, except Weld County, saw big increases in sales. Adams and Arapahoe County were up 39 percent and 33 percent, respectively, compared to August of last year.

Denver, the largest cannabis market, saw a $7.7 million increase in sales, up 22 percent year-over-year.

But there may be clouds on the horizon. In September, news broke of vaping-linked lung illnesses, many of which seem to be linked to vaping cannabis oils. One cannabis business owner said his vape cartridge sales were down 35 percent from August to September.

Still, others say customers are unlikely to drop cannabis altogether, but just switch to other methods of consumption until more is known about what’s causing the outbreak.

September sales numbers won’t be out for another month.