Iran: Major air pollution in Tehran continues February 6 /update 1

Event

School closures and traffic restrictions remain in place across Tehran province on Tuesday, February 6, due to dangerously high levels of air pollution. Air pollution in Tehran province has reached alarming levels over the past few days, prompting authorities to close schools since Sunday. Driving restrictions (i.e. allowing only vehicles with odd/even license plates on the roads on alternating days) also remain in place.

These measures are likely to stay in effect in the coming days until environmental conditions improve.

Context

Airborne concentration of fine particles hit an average 144 micrograms per cubic meter in Tehran on the morning of February 5, with peaks reaching 169 micrograms per cubic meter in some districts; according to the World Health Organization, levels above 25 are unhealthy.

This pollution is caused in large part by the 8 million vehicles on the roads in the capital and weather conditions currently preventing polluted air from leaving the city.

On a health-related note, these conditions could be hazardous to certain groups - e.g. children, seniors, pregnant women, and people suffering from asthma and other respiratory issues. Air pollution can be harmful to heart health and may make it more likely that some people will have a heart attack or stroke. Heavily polluted air can cause eye, nose, and throat irritation.

Advice

Individuals present in the Tehran region are advised to limit outdoor activities until the situation normalizes. Vulnerable individuals - such as children, pregnant women, and people with chronic illnesses - should be particularly vigilant.