Table 1.

Air Quality Index for public health risk

0–50	51–100	101–150	151–200	201–300	> 300
Good	Moderate	Sensitive group	Unhealthy	Very unhealthy	Maroon
No-risk	The risk for some people	The public is likely to be affected	Serious health effect for sensitive group	The health effect is increased for everyone	Everyone is likely to be affected