The severe air pollution poses significant health risks, particularly for children, the elderly, and those with pre-existing conditions. Visibility issues due to smog and fog are disrupting transportation, including train services in Bihar. Heavy rainfall in Tamil Nadu may lead to localised flooding and disruptions. The expected rain and snowfall in northern hill states could lower temperatures further, intensifying cold conditions in the region. Residents in affected areas are advised to take precautions to minimise exposure to pollution and prepare for adverse weather conditions.