The number of tests being carried out in New Delhi will be doubled over the next two days, and a temporary 10,000-bed hospital is being built in the Radha Soami Satsang Beas Ashram.
On Friday, a lockdown will be reimposed on the city of Chennai and several neighbouring districts due to a rise in infections, state officials said.
India has the fourth-highest number of cases in the world - now over 332,400 - while the number of one-day infections surpassed 12,000 for the first time over the weekend.
Nearly 60 per cent of India's cases are found in seven densely populated cities, including New Delhi and Mumbai, with infections surging since a nationwide lockdown was lifted on June 1.
The predicted mid-November peak is also fuelled by the ongoing movement of 100 million migrant labourers from India's cities, heading back to their homes in the rural periphery.
"We are far from the peak," warned Dr Nivedita Gupta, chief epidemiologist at the ICMR.