Air Quality Index (AQI) levels

0-50: Good (Green) - Air quality is satisfactory, and there is little or no health risk.
- 51-100: Moderate (Yellow) - Air quality is acceptable; however, there may be a risk for some people who are unusually sensitive to air pollution.
- 101-150: Unhealthy for Sensitive Groups (Orange) - Members of sensitive groups, such as children, the elderly, and people with respiratory or heart conditions, may experience health effects. The general public is not likely to be affected.
- 151-200: Unhealthy (Red) - Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
- 201-300: Very Unhealthy (Purple) - Health alert: everyone may experience more serious health effects.
- 301-500: Hazardous (Maroon) - Health warning of emergency conditions. The entire population is likely to be affected.

When the AQI is higher than 400, it is considered in the "Hazardous" range, and the air quality is extremely poor. This level of air pollution can lead to severe health problems for the general population, not just those in sensitive groups. Some of the potential side effects and problems associated with high AQI levels (greater than 400) include:

1. Respiratory problems: People may experience aggravated respiratory symptoms, such as coughing, shortness of breath, and chest pain.

2. Cardiovascular issues: High AQI levels can increase the risk of heart attacks, strokes, and other cardiovascular problems.

3. Reduced lung function: Prolonged exposure to hazardous air quality can lead to decreased lung function over time.

4. Worsening of pre-existing conditions: Those with pre-existing respiratory or heart conditions are at greater risk of experiencing exacerbation of their symptoms or acute health problems.

5. Increased hospital admissions: High AQI levels can lead to an increase in hospital admissions due to respiratory and cardiovascular issues.

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