Weather Today: IMD issues heavy rainfall alert in these states; Delhi AQI remains 'very poor'

Delhi's air quality index remained in the “very poor” category at 311 early Tuesday, according to the CQAM. It was recorded at 344 at 4 pm on Monday, compared with 376 reported at the corresponding time on Diwali day (Sunday).

The India Meteorological Department (IMD) predicted heavy rainfall in South India and Western Himalayan Region. It said isolated heavy rainfall is likely over Tamil Nadu on November 9 and 10.

The IMD also predicted isolated heavy rainfall/snowfall in parts of Kashmir Valley on November 12 and 13, 2026, while saying that "under the influence of a Western Disturbance, scattered to fairly widespread rainfall/snowfall is likely over the Western Himalayan Region."

In Delhi, the IMD forecast that a partly cloudy sky will prevail on Tuesday.

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The IMD forecast isolated heavy rainfall over Tamil Nadu on November 9 and 10, the Andaman and Nicobar Islands from November 10 to 14, and Nagaland, Manipur, Mizoram and Tripura on November 11.

The IMD forecast isolated heavy rainfall or snowfall in parts of Kashmir Valley on November 12 and 13, under the influence of a Western Disturbance.

Delhi is forecast to have partly cloudy skies and moderate fog at most places in the morning. The expected maximum temperature is 27°C to 29°C, with a minimum of 14°C to 16°C.

Delhi’s AQI was 311 early Tuesday, placing it in the ‘very poor’ category, according to the Commission for Air Quality Management.

The reported readings differed amid questions about monitoring network coverage and data availability, as well as variations in measurement parameters and averaging methods.

"Partly cloudy sky. Moderate fog at most places in the morning hours. The maximum and minimum temperatures over Delhi are likely to be in the range of 27°C to 29°C and 14°C to 16°C, respectively. The minimum temperature will be near normal (-1.5°C to 1.5°C) at most places, and the maximum temperatures will be below normal (-1.6°C to -3.0°C) at most places over Delhi," the IMD said.

Isolated heavy rainfall is also likely over Andaman & Nicobar Islands during 10th-14th November, and over Nagaland, Manipur, Mizoram and Tripura on 11th November.

Delhi Air Quality

Delhi's air quality index remained in the "very poor" category at 311 early Tuesday, according to the CQAM. It was recorded at 344 at 4 pm on Monday, compared with 376 reported at the corresponding time on Diwali day (Sunday).

Delhi recorded its most polluted Diwali in five years but the extent of its severity was likely worse than official figures showed as several monitoring stations went offline on Sunday night during the peak period of firecracker use in the Capital, according to PTI.

AQI (air quality index) readings put out by private agencies did, in fact, paint a much more unpleasant picture than what the official figures reflected, with most parts of Delhi-NCR reporting extremely hazardous air pollution levels, leading experts to cast doubts over government data.

Meanwhile, AQI.in recorded an air quality reading of 637 in Delhi on Monday morning, classifying the air quality as "hazardous". The platform also reported that the city's AQI had peaked at 2,283 after Diwali.

The differences in readings brought the monitoring network, data availability and variations in measurement parameters and averaging methods used by government and private agencies into focus - not for the first time, though.