A new DOH study [PDF] tracked levels of fine particles like elemental carbon, nitric oxide, nitrogen dioxide throughout the city's summer air. And though all the maps are different, they paint the same picture: New York is really soiled. more ›

One of the city's wealthiest neighborhood is also among its most polluted, according to a new air quality study. Researchers examined data from 150 sensors mounted atop light poles to figure out which communities had the highest levels of air pollution from contaminants like elemental carbon, nitrogen dioxide and sulfur dioxide, which "can irritate lungs, worsen asthma and boost the risk of heart attacks" — and the Upper East Side turned out to be one of the worst, according to the Daily News. more ›

As you may have read in our newsletter, on this day in 1966 New York City experienced the smoggiest day in the city's history... and the details read like a horror movie. After 9/11, the NY Times touched upon three particularly smoggy years in the city, saying "Most of the horrors of New York's environmental past, like the grim air episodes in 1953, 1962 and 1966, were chronic and cumulative. Most past events had a thousand sources and causes — a vague diffusion of responsibility that made no one responsible." more ›