Transcript for Huge Worry Over Super Smog in China
super smog obscuring the sun, forcing airports and schools to close. It's a dangerous health hazard unlike any other on this planet. Abc's gloria rivera is in the middle of it all. Reporter: It is air so toxic, so thick with pollution it's hard to make out the person next to you. China, a home to more people than live in the entire state of new jersey frozen in a soup. On the roads, it's hard to even make out red from green traffic lights. Warnings to stay indoors for those venturing out a mask is the only defense. Winter is the start of smog season in china. Some say the smog is nearly five times as bad as today's reading in bakers field, california. America's smoggiest spot. Headlines last january smog so bad it was hard to see the sun. Your eyes itched and throat burned. Watch me wipe a thin layer that's accumulated on most cars. That's soot and grime. This is my own air purifier. Watch this. Look, that's what we're breathing in beijing. One expect told me it's like becoming an instant smoker. In china today a mind blowing 1.2 million premature deaths are blamed on air pollution. It's being called an air apocalypse and with winter setting in the forecast is only for more smog. Abc's, beijing. From china to mexico,
This transcript has been automatically generated and may not be 100% accurate.