Air Algerie flight AH5017 broke apart when it hit the ground, French investigators have concluded.
The finding suggests the cause of the crash is unlikely to have been an attack.
"We think the aircraft crashed for reasons linked to the weather conditions, although no theory can be excluded at this point," French Interior Minister Bernard Cazeneuve told RTL radio.
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Flammable cladding has been found on 75 high-rise buildings across 26 local authority areas, MPs have been told.
The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
A contrast in temperature today - with cooler air across the north and warmer air staying further south.