Foggy climate continues to impact on railway services in the northern region on Wednesday with 65 trains getting delayed, cancelled or rescheduled.According to the Northern Railways Chief Public Relations Officer (CPRO) Nitin Chowdhary, at least 22 trains have been cancelled, 40 trains were running late and three have been rescheduled owing to poor visibility due to the fog.

Meanwhile, the air quality in the national capital has been keeping under 'hazardous' category as particulate matters remain suspended in air due to lack of wind.The air quality index (AQI) in Delhi's Siri Fort area was at 351, while ITO area was at 302.Northern India has been witnessing chilly weather for the last couple of days.

The passengers have been informed to check the train status of the train before undertaking their journey.The status of these trains will also be broadcast to the passengers on their respective registered mobile numbers.The fog makes the visibility very low and trains have to run at a highly-restricted speed to ensure the safety of the passengers which leads to considerable delays in the movement of trains.The status of these trains will be observed periodically keeping in view the strength of fog and decisions to restore some of the trains may be taken, as and when operationally feasible.The national capital Delhi had been experiencing chilling cold since this winter season.