As the United States' conflict with Iran enters its third week, the consequences on the ground are becoming increasingly visible and not just in the form of military damage. The Conversation reported that black rain falling over parts of Iran following the U.S.-Israeli airstrikes on oil depots has raised urgent questions about toxic contamination and its impact on millions of Iranian civilians.
Congresswoman Yassamin Ansari (D-AZ) publicly addressed the environmental fallout. In a post on X, Rep. Ansari warned that “Strikes on Tehran’s fuel depots risk long-term toxic contamination affecting millions of Iranian civilians.”
Her remarks landed as Iranian residents were already reporting headaches, difficulty breathing, and a dark, oily residue coating buildings and cars.
Iran's Red Crescent Society issued a public warning that rainfall in the aftermath of the strikes could be highly dangerous and acidic.
Dangerous Chemicals
Scientists who study air pollution say the situation may be more serious than the term "acid rain" suggests. The black precipitation appears to contain a range of harmful compounds, including ultrafine particles, carcinogenic hydrocarbons, heavy metals, and other aftereffects of the strike.
The smoke rising from bombed oil depots also produces sulfur dioxide and nitrogen dioxide, gases that react with water vapor to create acidic compounds in the atmosphere.
Beyond rain, experts note that smoke itself carries health risks at any level of exposure. Prolonged contact with contaminated air has been linked to respiratory illness, cardiovascular conditions, neurological effects, and elevated cancer risk over time.
Currently, elderly, young children, and pregnant women face the greatest danger.
“Wars launched without congressional authorization and without a clear plan have consequences that last for generations,” Ansari concluded.
The strikes may have hit their military targets, but the question of who will fully account for what comes next remains unanswered.
