What should everyone do when AQI is Unhealthy?
Everyone should reduce prolonged outdoor exertion at Unhealthy AQI (151-200). Sensitive groups should avoid all outdoor physical activity. Keep windows closed, use air purifiers, and monitor symptoms like coughing or shortness of breath.
Can Unhealthy AQI cause permanent health damage?
Short-term exposure during a few Unhealthy AQI days typically does not cause permanent damage in healthy adults. However, repeated or prolonged exposure can contribute to respiratory issues, and sensitive individuals face higher risks even from brief exposure.
Should schools cancel outdoor activities at this level?
Yes, health authorities recommend that schools cancel or move outdoor activities indoors when AQI reaches Unhealthy levels. Recess, PE classes, and outdoor sports practices should be held indoors or postponed.
What causes AQI to reach Unhealthy levels?
Common causes include major wildfire smoke events, severe smog during heat waves, industrial accidents, and unfavorable weather patterns that trap pollution. Temperature inversions can cause pollutants to accumulate rapidly.
How do I check the current AQI in my area?
Visit AirNow.gov for real-time AQI data from EPA monitors. Most weather apps also display AQI. Many cities have local air quality monitoring networks with even more detailed neighborhood-level data.