Local residents and tourists expressed despair in Sydney on Tuesday, as thick smoke enveloped the city as a result of almost 100 bushfires blazing across New South Wales.

Footage shows a thick blanket of smoke over Sydney with record poor visibility and famous landmarks like the Harbour Bridge and Sydney Opera House being invisible from a few hundred metres distance. Many ferries were also cancelled because of the low visibility.

"Well, I do have asthma and I'm on pretty high alert. I checked the air quality index, looking at pretty much to see what is happening and it's much worse today. You can see the visibility behind me is very reduced, just across the bay there and it's quite affecting me and I'm wondering where I can go to to get away from this smoke," said a local resident Anne Henry.

I feel that there's a lot more that could be done and it's shocking to hear the fire chiefs addressed, wanted to address them and they all refused a hearing, I think, from our Prime Minister, I think it's been absolutely inadequate," she added.

Another tourist also commented that, "I feel sad, this smoke, wow, and the animals, koala, very sad."

Parts of Sydney currently have a hazardous air quality index of 2552 with temperatures expected to touch close to 36 degree Celsius (97' Fahrenheit).

Six people have died and more than 700 homes have been destroyed in the bushfires that have ravaged Australia since September.

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