Today's weather on Sept. 13: Afternoon rain in Bangkok, intermittent rain in Phuket, sunny skies in Chiang Mai

Bangkok: Afternoon rain and the highest heat watch level

Bangkok will have sunny skies alternating with occasional rain today. The high will be 33°C and the low 26°C. Rain is expected at 15:00, with a 90% chance of rain and about 1 millimeter of rainfall. At 18:00, skies will be sunny.

Bangkok's heat index (WBGT) is at the highest watch level. People who have to work or engage in activities in direct sunlight should take precautions against heat stress. The outdoor activity index is rated unsuitable, while driving conditions are excellent and air quality is good. Mosquitoes may also be present in the area. Those going outdoors should bring mosquito repellent as appropriate.

Phuket: Occasional rain and hot, humid conditions

Phuket will be mostly cloudy with occasional rain today. The high will be 32°C and the low 25°C, with relative humidity at 74%. Rain is expected at 09:00, with about 1 millimeter of rainfall. Skies will be mostly cloudy at 12:00 and 18:00.

Phuket's heat index (WBGT) is also at the highest watch level, as in Bangkok. The outdoor activity index is rated unsuitable. People engaging in outdoor activities should prepare an umbrella or raincoat in case of occasional rain. Driving conditions are excellent, and Phuket's air quality is rated excellent. Mosquitoes may be present in the area; prepare mosquito repellent as appropriate.

Chiang Mai: Sunny skies and the hottest conditions today

Chiang Mai will have sunny skies today. The high of 34°C is the highest among the cities tracked today. The low will be 23°C. Skies will be sunny at 06:00 and 21:00.

Chiang Mai's heat index (WBGT) is at the watch level, lower than Bangkok and Phuket, which are at the highest watch level. The outdoor activity index is rated unsuitable, as in the other two cities. Driving conditions are excellent. Chiang Mai's air quality is rated good, reaching excellent at 12:00. Mosquitoes may be present in the area; prepare mosquito repellent as appropriate.