WHO warns of toxic ‘black rain’ in Iran after strikes on oil facilities

Following strikes on Iranian oil facilities, the World Health Organization (WHO) has warned of potential respiratory problems due to "black rain" and toxic compounds released into the air. The WHO confirmed receiving reports of oil-laden rain and noted the release of hydrocarbons, sulfur oxides, and nitrogen compounds. This follows strikes, reportedly part of a US-Israeli campaign, that caused fires and black smoke in Tehran. The WHO supports Iran's advisory for people to remain indoors to avoid exposure to the polluted air. The strikes have raised serious air quality concerns due to the damage to oil storage facilities and refineries.

On March 10, 2026, the World Health Organization (WHO) issued a warning regarding potential health risks associated with "black rain" in Iran. This phenomenon is reportedly a consequence of Israeli strikes targeting Iranian oil facilities. The WHO's concern centers on the potential impact on public health, particularly for children. Iranian authorities have responded by advising residents to remain indoors. The advisory is due to fires and heavy smoke resulting from the strikes, which have significantly degraded air quality in affected areas.

Following Israeli airstrikes on Iranian oil infrastructure near Tehran, experts warn of significant, long-term environmental consequences. The bombings of the Shahran and Shahr-e fuel depots have released toxic chemicals, prompting warnings for residents to stay indoors due to potential acid rain and respiratory damage. The WHO has expressed concern about the contamination of food, water, and air, posing health risks, especially to vulnerable populations. Black rain, a mixture of soot, particulate matter, and rainwater, has already fallen across Tehran, and soil and water contamination are beginning. Experts highlight the release of sulphur and nitrogen compounds, heavy metals, and other pollutants, which can cause immediate health issues like headaches, skin irritation, and breathing difficulties.