Schools in and around Mexico City have been ordered to shut down on Thursday due to rising levels of air pollution.
In a statement, the education ministry said all public and private schools in the Mexico City metropolitan area will be closed, and urged children to remain indoors.
Two of the city's main universities also suspended classes in the metropolitan area on Thursday.
On Tuesday, authorities declared an environmental emergency in response to a sharp rise in air pollution caused by brush fires.
President Andres Manuel Lopez Obrador called the situation "highly regrettable".
Partial resumption of air navigation in Qatar
Kuwait and Qatar thwart fresh wave of Iranian attacks
After a week of war, Trump demands Iran's 'unconditional surrender'
Ex-rapper's party set to sweep Nepal election
Israeli airforce pounds Beirut, Lebanon death toll rises
