Summer storms will bring downpours to parts of the Northeast, Central, East and South over the next few days, the Meteorological Department warned on Monday.

A low-pressure front, which will be active until March 7, combined with a strong, south-southeasterly wind will bring overcast conditions and cause temperatures of around 38-40 degrees Celsius.

The front will cause weather changes all the way to the South, with the department warning of possible showers and waves of up to one metre in both the Gulf of Thailand and the Andaman Sea.

Between March 8-9, a cold front from China will move towards the region, causing storms.

Those living in the North and the Northeast should expect stormy conditions with heavy rain and lightning.

Waves of 1-2 metres are expected across the South.

Separately, satellite images and data from the Geo-Informatics and Space Technology Agency (Gistda) showed that as of 8am on Monday, five provinces had extremely high levels of PM2.5 dust -  far above the safe threshold of 37.5 microgrammes per cubic metre set by the government.

Nakhon Phanom reported the worst pollution, with PM2.5 levels of 82.8 µg/m³, followed by Mukdahan (82.5µg/m³), Kalasin (76.5µg/m³), Phayao (76µg/m³), and Roi Et (75.6µg/m³).

Thirty-one provinces reported unhealthy levels of fine dust pollution.