It seemed most of the days we traveled about the Joshua Tree/Salton Sea areas, there was a haze in the air. The crisp blue skies were sometimes missing. I then learned that the smoke from massive fires in Siberia was reportedly being carried across the Pacific Ocean into the Western U.S. A bit sobering considering Fukushima Daiichi?
Below is the smoke filtering into the East Lake (Oregon) caldera from a nearby forest fire in 2006. It is not unusual during the Summer forest fire season in Oregon to have smoke drift into areas from the fires to the South/East.