Air Quality Index Color Code Reference

Air Quality Index	Ozone Concentration (parts per billion)	Weather Conditions	Health Effects	Recommended Actions
Good AQI: 0-50 (Green)	0-64	Cool summer temperatures Windy conditions Significant cloud cover Heavy or steady precipitation	No health effects are expected	Keep cars and boats tuned up Use environmentally safe paints and cleaning products Conserve electricity-set A/C to highest comfortable level
Moderate AQI: 51-100 (Yellow)	65-84	Temperatures in the upper 70's to lower 80's Light to moderate winds Partly cloudy to mostly sunny skies Chance of rain or afternoon thunderstorms	Unusually sensitive people should consider limiting prolonged outdoor exertion Unhealthy for Sensitive Groups
Unhealthy for Sensitive Groups AQI: 101-150 (Orange)	85-104	Temperatures in the 80's and 90's Light winds Mostly sunny skies Slight chance of afternoon thunderstorms	Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion	Limit daytime driving Limit vehicle driving Refuel vehicles after dusk Don't "top off" your gas tank Avoid congested areas Use water-based paints Use transit or car pool Use newest/best maintained car Combine trips and share rides Postpone using gasoline mowers Barbecue without starter fluid
Unhealthy AQI: 151-200 (Red)	105-124	Hot, hazy, and humid Stagnant air Sunny skies Little chance of precipitation	Active children and adults, and people with respiratory disease such as asthma, should avoid prolonged outdoor exertion; everyone else, especially children, should limit prolonged outdoor exertion.
Very Unhealthy AQI: 201-300 (Purple)	125 and above	Hot and very hazy Extremely stagnant air Sunny skies No precipitation
The weather conditions listed above are common weather types associated with the respective air quality level. A combination of part or of all these weather conditions could lead to a certain level of observed air quality.