Residents of Uttar Pradesh's Kaushambi District are a worried lot as the area has been receiving acid rain for the past few days.

The stinking yellow coloured rain, reportedly each drop having half a centimeter diameter, has been giving nightmares to the residents of the area.

They say that the yellow rain has been falling mostly during the night though sometimes it falls during the daytime as well.

"For the past few days, we have been receiving yellow rain. We received more yellow rain in the night as compared to the day time although we saw yellow rain in the day as well. I have never seen anything like this in my life. Everybody is afraid," said Pushapa Manauri, a resident.

The yellow rain has been continuing for the past one-month. Experts say the yellow rain is actually acid rain.

"Chemicals get mixed with the moisture in the air by a chemical process and become acidic. This acid in the air gets mixed with dewdrops and falls on the ground. This is called acid rain. Since it is yellow in colour, it is called yellow rain. This acid rain has many unfavourable consequences," said S.S Ojha, Professor, Allahabad University.

This yellow coloured rain was first received in Kaushambi last year during the summer season.

Since then, it has become a cause of concern for the people who are worried about the unfavourable consequences of this rain.