Real-Time Outdoor Activity Guidelines Based on PM2.5 Concentration

No restrictions: It's a great day to be active outside.

Highly sensitive individuals: Consider reducing prolonged or heavy exertion. Watch for symptoms such as coughing or shortness of breath. These are signs to take it easier.

Everyone else: It's a good day to be active outside.

Sensitive groups: Reduce prolonged exposure or heavy exertion. It's okay to be active outside, but take more breaks and do less intensive activities. Watch for symptoms such as coughing or shortness of breath.

People with Asthma should follow their asthma action plans and keep quick relief medicine handy.

If you have heart disease, symptoms such as palpitations, shortness of breath, or unusual fatigue may indicate a serious problem. If you have any of these symptoms, contact your healthcare provider.

Everyone else: It's okay to be active outside, but take more breaks and do less intensive activities.

Sensitive groups: Avoid prolonged or heavy exertion. Consider moving activities indoors or rescheduling.

Everyone else: Reduce prolonged or heavy exertion. Take more breaks during outdoor activities.

Sensitive groups: Avoid all physical activities outdoors. Move activities indoors or reschedule to a time when air quality is better.

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

Sensitive groups: Remain indoors and keep activity levels low. Follow tips for keeping particle levels low indoors.

Workplace: May consider closing if not essential to public health.

Everyone else: Avoid all physical activity outdoors.