SINGAPORE - Singaporeans can expect to see some hazy days in the latter half of September, said the National Environment Agency (NEA) in an advisory on Wednesday.

The weather in the coming fortnight is expected to remain mostly dry, which could lead to more haze in the Republic if unfavourable winds blow in smoke from the surrounding region, it said.

Still, thundery showers - brought on by the south-west monsoon - are on the cards on some days, which should provide some relief over the next two weeks.

"Short-duration thundery showers are likely on three to five days, mostly in the late morning and early afternoon. In addition, thundery showers with gusty winds due to Sumatra squalls can be expected on one or two days in the pre-dawn hours and early morning," the advisory said.

Temperatures are expected to hit a high of 34 deg C.

On Wednesday (Sept 16), the haze remained in the lower end of the Unhealthy range, with the 24-hour Pollutants Standards Index (PSI) reading at 87-117 as of 7pm.

People are still advised to limit any outdoor or strenuous activities.

The NEA also advises elderly, pregnant women and children to minimise prolonged or strenuous outdoor physical exertion, while those with chronic lung or heart disease should avoid it altogether.