Israeli strikes on oil depots around Tehran have released massive quantities of toxic hydrocarbons, sulfur dioxide, and nitrogen oxides. Mixed with rainwater, these chemicals are causing highly acidic precipitation that can cause skin burns and severe lung damage upon contact, according to Iranian authorities.
▪️ Dense plumes of black smoke from the Shahran and other refineries have blotted out the sun, plunging parts of the city into darkness and creating a “nuclear winter” effect, NYT reported. Authorities warned that these noxious fumes cause acute respiratory distress and eye irritation.
▪️ Oil-saturated rainwater has blanketed the city, leaving rooftops, balconies, and streets covered in a thick, murky black liquid and oily soot. This contamination poses a long-term risk of heavy metals like nickel and vanadium leaching into the soil and local water systems.
▪️ Environmental groups warn the pollution threatens migratory birds crossing the Persian Gulf. The “black rain” and smoke plumes can cause internal organ damage and destroy the insulating properties of bird feathers, leading to hypothermia and death.
The Iranian Red Crescent Society warned of the dangers of the rain, advising residents to protect themselves and to cover exposed food from oily soot particles. Officials said the rain is highly corrosive and could potentially damage civilian structures.

