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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.