Police in <a href="https://www.thenationalnews.com/tags/abu-dhabi/" target="_blank">Abu Dhabi</a> reduced speed limits on two roads early on Wednesday as thick fog descended over parts of the emirate. Visibility dropped to below one kilometre on the stretch of coast to the west of the capital. Police warned drivers to take care as they cut the speed limit to 80kph on the Al Nouf to Al Ruwais and Al Mirfa to Baynunah roads in the early hours. The fog is expected to lift by 9.30am to leave a hot and sunny day, with temperatures reaching 40°C in the south. It will be cooler on the coast, where the mercury will hit 35°C in Abu Dhabi city and 34°C in <a href="https://www.thenationalnews.com/tags/dubai/" target="_blank">Dubai</a>. Winds will be light to moderate, picking up at times. Conditions in both the Arabian Gulf and Oman Sea will be calm. Thursday will be another hot and sunny day, with temperatures reaching up to 37°C in Dubai and 36°C in Abu Dhabi city. They will reach a peak on Friday, hitting 38°C in Abu Dhabi and 37°C in Dubai, before plunging back to the low 30s at the weekend. Temperatures will be more pleasant next week, ranging from the high 20s to low 30s.