The air quality is good. Enjoy your usual outdoor activities.

Enjoy your usual outdoor activities.

Enjoy your usual outdoor activities

Consider reducing intense activities outdoors, if you experience symptoms such as sore eyes, a cough or sore throat.

Consider reducing intense activities outdoors, if you experience symptoms such as sore eyes, a cough or sore throat.

Reduce physical activities outdoors.

Air quality is considered satisfactory, and air pollution poses little or no risk.

It's a great day to be active outside.

Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

It's a good day to be active outside.

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

It's OK to be active outside, but take more breaks and do less intense activities.

Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.

Reduce prolonged or heavy exertion. Take more breaks during all outdoor activities.

Health alert: everyone may experience more serious health effects.

Avoid prolonged or heavy exertion. Consider moving activities indoors or rescheduling to a time when air quality is better.

Health warnings of emergency conditions. The entire population is more likely to be affected.

Avoid all physical activity outdoors.