India, Dec. 15 -- As Delhi's air quality continued to remain in the 'severe' category on Monday, the Singapore High Commission in India issued an advisory for its nationals residing in Delhi-NCR, asking them to "pay heed" to the instructions regarding staying indoors and wearing masks when stepping out.

The overall AQI in the capital at 2 pm stood at 437, according to the Central Pollution Control Board's Sameer app. All the air quality monitoring stations across the capital also recorded an AQI of 400 or above on Monday.

The Singapore High Commission in New Delhi posted the advisory on its official X handle and said, "On 13 December 2025, the Indian Central Pollution Control Board invoked Stage 4, the highest level, of the Graded Respo...