Clean air to breathe is the most important thing.
469. And the minute particles that cause cancer which are called PM 2.5 are 452.8.
This reading was taken on
2015-11-07 07:00:00 IST
Anything over 300 is hazardous. Serious aggravation of heart or lung disease and premature mortality in persons with cardiopulmonary disease and the elderly; serious risk of respiratory effects in general population. Everyone should avoid all physical activity outdoors; people with heart or lung disease, older adults, and children should remain indoors and keep activity levels low. more