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AQI Alerts Checklist: The Right Way

June 18, 2026 · The Clime Team
AQI Alerts Checklist: The Right Way

The Air Quality Index (AQI) is a vital tool for assessing the cleanliness of the air we breathe. Understanding AQI alerts is essential for safeguarding your health, especially during periods of elevated pollution.

What Is the AQI?

The AQI is a scale developed by the U.S. Environmental Protection Agency (EPA) to communicate daily air quality levels. It measures concentrations of five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Each pollutant has its own AQI scale, and the highest value among them determines the overall AQI for a location. (airnow.gov)

Understanding AQI Categories

The AQI is divided into six color-coded categories, each representing a different level of health concern:

  • Good (0-50): Air quality is satisfactory, posing little or no risk.
  • Moderate (51-100): Air quality is acceptable; however, there may be a risk for some people, particularly those sensitive to air pollution.
  • Unhealthy for Sensitive Groups (101-150): Sensitive individuals may experience health effects; the general public is less likely to be affected.
  • Unhealthy (151-200): Some members of the general public may experience health effects; sensitive groups may experience more serious effects.
  • Very Unhealthy (201-300): Health alert: the risk of health effects is increased for everyone.
  • Hazardous (301 and higher): Health warning of emergency conditions: everyone is more likely to be affected. (airnow.gov)

How to Monitor AQI Alerts

Staying informed about local air quality is crucial. Here are effective ways to monitor AQI alerts:

  1. Use Reliable Sources: Access real-time AQI data from authoritative platforms like AirNow.gov.
  2. Set Up Notifications: Many local environmental agencies offer alert systems to notify residents of significant changes in air quality.
  3. Check Local News: Local news outlets often provide updates on air quality, especially during events that may impact pollution levels.

What to Do When AQI Levels Are Elevated

When AQI levels reach the 'Unhealthy for Sensitive Groups' category or higher, it's important to take precautions:

  • Limit Outdoor Activities: Reduce prolonged or heavy exertion outdoors, especially if you belong to sensitive groups such as children, older adults, or individuals with respiratory conditions.
  • Stay Indoors: Keep windows and doors closed to minimize exposure to polluted air.
  • Use Air Purifiers: Utilize air purifiers with HEPA filters to reduce indoor air pollution.
  • Follow Local Guidance: Adhere to recommendations from local health authorities regarding outdoor activities and health precautions.

How Clime Can Help

Clime offers advanced air quality monitoring solutions that provide real-time AQI data, personalized alerts, and health recommendations tailored to your location. By leveraging Clime's services, you can stay informed and take proactive steps to protect your health during periods of poor air quality.

Conclusion

Understanding and responding to AQI alerts is essential for maintaining health, especially during times of elevated air pollution. By staying informed and taking appropriate precautions, you can minimize health risks associated with poor air quality.

Highlights:

  • AQI Forecasts: Your Advance Notification About Unhealthy Air | AirNow.gov
  • Action Days | AirNow.gov

Frequently Asked Questions