The World Health Organization (WHO) has issued a warning about potential health risks in Iran after reports of toxic “black rain” following recent attacks on the country’s oil facilities. According to the global health agency, the phenomenon could expose residents to harmful airborne chemicals and increase the risk of respiratory illnesses.
The United Nations health body said on Tuesday that it had received several reports this week of rain contaminated with oil particles. The reports surfaced after an attack on an oil refinery on Monday, which engulfed parts of the Iranian capital, Tehran, in thick black smoke.
The strikes are believed to be part of a broader campaign by the United States and Israel targeting Iran’s energy sector. Environmental experts warn that when large amounts of oil and industrial chemicals burn, they release toxic compounds into the atmosphere. These pollutants can mix with clouds and fall back to the ground in the form of dark, contaminated rainfall commonly referred to as “black rain.”
Speaking during a press briefing in Geneva, WHO spokesperson Christian Lindmeier said that such rainfall could pose significant health risks to the population. He noted that black rain, along with possible acid rain, could expose communities to hazardous pollutants.
According to Lindmeier, the most immediate concern involves respiratory health. Inhaling polluted air or coming into contact with contaminated rainwater may trigger breathing difficulties, particularly for vulnerable groups such as children, older adults, and individuals with pre-existing lung conditions.
Iranian authorities have already advised residents in affected areas to remain indoors as a precaution. The WHO has supported this recommendation, emphasizing that limiting exposure to polluted air can help reduce potential health impacts.
Environmental specialists warn that if the concentration of toxic particles in the atmosphere remains high, the effects could extend beyond immediate health risks. Contaminated rainfall may also impact soil quality, water sources, and agricultural areas in the region.
Health officials say they are continuing to monitor the situation closely while urging residents to follow safety guidance and remain cautious until air quality improves.
