Delhi's air quality remained in the "very poor" category on Monday, just five points away from the "severe" zone. Steady surface winds and rain in the evening helped improve the air quality to some extent. However, pollution levels have remained high for the past week, making this likely to be Delhi's most polluted November in at least eight years. The city recorded its first spell of rain since November 10, which helped ease the pollution. The air quality is expected to remain in the "very poor" category for the next few days.