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Outdoor Time Calculator
Calculate how long you can safely spend outdoors based on current air quality
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Check your local AQI on our city pages
AQI Guidelines by Range
0-50
Good
Air quality is satisfactory. Enjoy normal outdoor activities.
51-100
Moderate
Acceptable for most. Unusually sensitive people should consider limiting prolonged exertion.
101-150
Unhealthy for Sensitive Groups
Children, elderly, and people with respiratory conditions should reduce prolonged exertion.
151-200
Unhealthy
Everyone should reduce prolonged outdoor exertion. Sensitive groups should avoid it.
201-300
Very Unhealthy
Health alert. Everyone should avoid all outdoor physical activity.
301+
Hazardous
Health emergency. Everyone should avoid all outdoor activities.