A wildfire spurred by hot summer winds has reached France’s second-largest city, Marseille, this week, grounding all inbound and outbound flights.

The wildfire has also forced many residents to leave or barricade themselves indoors as smoke choked the Mediterranean air.

A big city hospital switched to generator power, train traffic was halted in most of the surrounding area and some roads were closed, while others were tangled with logjams.

More than 1,000 firefighters were deployed to tackle the fire, which broke out near the town of Les Pennes-Mirabeau before racing toward Marseille.

Some 720 hectares were hit by the blaze, the prefecture said.

Nine firefighters were injured, according to the prefecture. No deaths have been reported.

The prefecture said in a statement on Tuesday evening that ”the situation is under control”, though the fire has not yet been extinguished. It described the fire as ”particularly virulent”.

Smoke rises behind buildings during wildfire in Marseille

Smoke rises behind buildings during a wildfire in the La Castellane district of Marseille. (AP: Lewis Joly)

It came on a cloudless, windy day after a lengthy heatwave around Europe left the area parched and at heightened risk for wildfires.

Several have broken out in southern France in recent days.

Light grey smoke gave the sky over Marseille’s old port a dusty aspect as water-dropping planes tried to extinguish the fire in the outskirts of the city, which has some 900,000 inhabitants.

A helicopter drops water while flying over smoke rising from the wildfire

A helicopter drops water while flying over smoke rising from the wildfire in Marseille. (Reuters: MALIK H./@thisisoim_ /@qn13officiel)

Hundreds of homes were evacuated. The prefecture urged people in the affected areas to stay indoors and off the roads. With the fire approaching Marseille, the prefecture also advised residents in the north of the city to keep windows closed to prevent toxic smoke from entering their homes.

One distressed family watched the smoke over their neighbourhood in the hills above the port city and showed reporters how the roof of their neighbour’s house had been damaged in the fire as they worried about their own.

Marseille airport announced that the runway had been closed at around midday.

The prefecture said train traffic was halted, notably after a fire neared the tracks in L’Estaque, a picturesque neighbourhood of Marseille.

A city view of Marseille in smoke from wildfire

Smoke rises over Marseille as a fast-moving wildfire spreads on the outskirts of the city. (Reuters: Alexandre Dimou)

As a safety measure, the city’s Hospital Nord switched to generators “due to micro power cuts”.

“The aim is to secure the imaging sector. We are not worried as we have a high level of autonomy,” the University Hospitals of Marseille said.

It added that because of the disrupted traffic, it had asked workers to remain at their posts until the next teams started their shifts.

AP