Hot and humid weather, with lightning, forecast for the bank holiday weekend

Dong Jun / SHINE

Two women take advantage of the early summer conditions in Shanghai.

Shanghai is embracing a hot and humid three-day dragon boat festival, according to local weather officials.

Heavy clouds and short-term periods of rain will start the break on Friday, then more rain with lightning and wind is expected over the weekend.

Mercury levels over the three days will fluctuate between 22 and 28 degrees Celsius.

Wet weather will cause people to use their air conditioners, and local health officials are reminding residents to thoroughly clean and disinfect the air conditioning system before using it.

An official from the local Center for Disease Control and Prevention, Zhu Renyi, gave the following advice on how to clean air conditioners.

1. Single or split system air conditioners can be used with adequate ventilation. Filters should be cleaned in a timely manner.

2. The use of central air conditioning should follow relevant pandemic control measures. Residents or businesses should ensure adequate ventilation during and after use.

3. If the central air conditioner has a cool air function, it works with the air conditioner all the time; if it has no fresh air function, the windows should be opened for good ventilation when it is working.

4. Central air conditioning and ventilation systems should be disinfected weekly when in operation. For routine cleaning and disinfection, 250 mg/L to 500 mg/L of chlorine (bromine) or chlorine dioxide disinfectant can be used for spraying, soaking or wiping for 10 to 30 minutes. After disinfection, clean with water and dry. If the above disinfectants are not suitable, 0.1% quaternary ammonium compounds or other disinfectants can be used.

5. Cleaning and disinfection work must be carried out by a qualified professional company.

Hot and humid weather, with lightning, forecast for the bank holiday weekend

Dong Jun / SHINE

A couple walks outside to shop with their dog.