At what air quality level should we stay indoors, especially if we have asthma?
Air quality runs from good (green on maps), to moderate (yellow), unhealthy for sensitive groups (orange), unhealthy (red) and worse. Moderate air quality is a problem only for those especially sensitive to increased ozone levels. Your physician would be the best judge of your susceptibility to this level. Generally, problems begin at orange-unhealthy for sensitive groups. That does raise concern for those with respiratory or heart problems...of course that would include those with asthma. The recommendation is that such people limit their time outdoors...and certainly curtail outdoor exercise. That applies to all people when the air quality declines to red-unhealthy.