A general recommendation is that the temperature be held constant in the range of 21-23°C (69-73°F). In summertime when outdoor temperatures are higher it is advisable to keep air-conditioned offices slightly warmer to minimize the temperature discrepancy between indoors and outdoors.elative humidity levels below 20% can cause discomfort through drying of the mucous membranes and skin. Low relative humidity levels may also cause static electricity build-up and negatively effect the operations of some office equipment such as printers and computers.