Iran War Creates a Public Health and Environmental Crisis

March 14, 2026

Smoke sweeping through the city. Black skies blocking out the morning sun. Black rain coating everything in sight with a toxic, opaque residue. These are the conditions Tehran residents have been waking up to since the United States and Israel’s war against Iran commenced earlier this month, and as the city’s oil depots have been bombed — causing massive black plumes of smoke to tower above them. 

The World Health Organization recently stated that the black rain and “acidic rain” that resulted from these bombings were “a danger for the population.” The organization noted that people in the region could face respiratory issues, and that the conditions could threaten the lives of those with existing respiratory issues, like asthma.

“Such plumes can contain particulate matter, nitrogen oxides, sulphur dioxide, carbon monoxide and toxic organic compounds — including PAHs and potentially dioxins — posing health risks to downwind communities,” added a March report from the Conflict and Environment Observatory. 

An oil depot engulfed in flames also represents a threat to the environment, of course. The longer the war goes on, the more carbon emissions will be generated, and there’s currently no end in sight as the U.S. and Israel continue to bombard Iran. The ongoing conflict in Ukraine has demonstrated that war can lead to tens of millions of tons of carbon dioxide being pumped into the atmosphere. 

Michael Oppenheimer, a professor of geosciences and international affairs at Princeton University, tells Rolling Stone that at this early point in the war, the concern is less the emissions and more the impact on public health. 

“Based on analyses done after the Gulf War, when a large number of oil wells in Kuwait were set on fire, the impact on long-term global climate was probably not significant,” Oppenheimer says. “It will create, for some period of time, a regional air pollution problem.”

Oppenheimer says heavy particles, such as soot, will contaminate the area, but micro-particulates can travel long distances — hundreds of miles, potentially — and get into people’s lungs. The effects of the burning oil depots could also threaten water supplies and agriculture.