Indoor air quality and climate of three temporary emergency housing units in Aso City, Kumamoto Prefecture, have been measured from August 2013 to April 2014 continuously and those results are reported in this paper comparing with those factors in Tohoku region. Outdoor air was introduced during the daytime through the year and carbon dioxide (CO2) concentrations in the three units were lower than 1000 ppm. However, CO2 concentrations were very high during the evening especially with heating and cooling equipments. A mechanical ventilation system for 24-hour ventilation was installed in the toilet and was typically run, however, the air volume can be insufficient or the route of ventilation can be inappropriate. Concentrations of chemical substances in the three units were significantly lower than guideline values and those in Tohoku area. On the other hand, fungal contamination was detected in a number of rooms that had less airflow. Good indoor air quality by the sufficient ventilation and frequent cleaning are required to support victims'health.
