A cold and dryair mass trailing a Western Disturbance will sweep across north India from tonight, triggering a cold wave, according to Live Weather Of India forecast. Minimum temperatures may fall by 0 to 5°C across Punjab, Haryana, Chandigarh, Delhi-NCR and Rajasthan from January 24 to 26. Despite sunshine, daytime temperatures may stay between 13 and 17°C, the forecast added.