But if more warmth means more smog, why has smog *decreased* so much since the cool 1970s?

"Scientists" claim warming climate will mean more smog

Mary D. Nichols, Chairman of CARB, said, "We already know that climate change will bring us increased forest fires, shorter winters, hotter summers and impact our water supply. Now we have scientific evidence that higher temperatures are hurting our lungs, too. To protect public health, we need to take cost-effective measures to slash greenhouse gases now and continue to ratchet down all sources of smog-forming emissions and harmful soot and particles”

Environment Now - Sustainability Program

Over the past thirty years, California’s efforts to clean the air have been extremely successful.