Singapore woke up under the blanket of a curious cloud formation on Sunday morning.

The skies over several parts of the island were covered in patches of fluffy altocumulus clouds.

These mid-level clouds can consist of both water droplets and ice crystals.

They typically form at altitudes of 2km to 7km, appearing as layers or waves of rounded cloudlets.

According to the National Environment Agency's Meteorological Service Singapore, altocumulus clouds in the tropics usually come from the remnants of a convective system such as a thunderstorm.

They do not usually produce rain, but they often signal a coming change in the weather.

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