Good luck finding a sunny day because Pittsburgh enjoys the fewest hours of annual sunlight of any major city, and continues to have air quality as bad as any other US city, being in the top ten worst according to the Lung Association.
Moreover, after growing up in Pittsburgh and living in Seattle, I can tell you that Seattle definitely has less sunlight (it's not even close) than Pittsburgh. So much less that my doctor had to prescribe my Vitamin D to address a deficiency I had when I moved there (after living in Pittsburgh my whole life, no problems).
[1] "California is home to eight of the 10 cities in America where air pollution is worst" https://qz.com/963089/california-is-home-to-eight-of-the-10-...
As for your linked article, that seems irrelevant. Nobody thinks Hanford, CA is an upcoming tech hub.
Rank City Annual % sunshine 164 PITTSBURGH, PA 45% 165 SEATTLE C.O., WA 43%
Often remarked that we had less rain than Portland, but also less sunny days.