The 24-hr PSI for the next 12 hours is expected to be between the low and mid sections of the Unhealthy range, and may drop to the high-end of the Moderate range if the haze conditions continue to improve. Healthy persons should reduce prolonged or strenuous outdoor physical exertion. The elderly, pregnant women and children should minimise prolonged or strenuous outdoor physical exertion, while those with chronic lung or heart disease should avoid prolonged or strenuous outdoor physical exertion. Persons who are not feeling well, especially the elderly and children, and those with chronic heart or lung conditions, should seek medical attention.