What is Air Quality Index Scale?
The Air Quality Index (AQI) scale is a measurement used to communicate the level of air pollution in a specific area. It provides a simple, easy-to-understand way for the public to assess the health risks associated with air quality. Developed by the United States Environmental Protection Agency (EPA), the AQI scale is used worldwide to monitor and report air quality data.
The AQI scale ranges from 0 to 500, with higher numbers indicating poorer air quality. The scale is divided into six categories, each with a corresponding color code that represents the level of health risk:
1. Good (0-50): Air quality is considered satisfactory, and there is little to no risk to public health.
2. Moderate (51-100): Air quality is acceptable, but there may be a moderate health risk for sensitive groups.
3. Unhealthy for Sensitive Groups (101-150): This level indicates air quality may be unhealthy for individuals with respiratory or cardiovascular diseases, the elderly, and children.
4. Unhealthy (151-200): This category is considered unhealthy for everyone, and there is an increased risk of respiratory and cardiovascular problems.
5. Very Unhealthy (201-300): Air quality is very poor, and everyone is at a higher risk of health issues, including respiratory and cardiovascular problems.
6. Hazardous (301-500): This is the worst category, indicating air quality is extremely dangerous, and everyone is at a high risk of serious health problems.
Understanding the AQI scale is crucial for individuals, communities, and policymakers to take appropriate actions in response to air quality issues. By monitoring the AQI, people can make informed decisions about outdoor activities, such as exercising or spending time in parks. Additionally, policymakers can use this information to implement measures that improve air quality and protect public health.
