Air quality refers to the condition of the air in our environment, which can be affected by various pollutants and particles. Good air quality means the air is clean and safe to breathe, while poor air quality can lead to health problems for people and animals. Common pollutants include smoke, dust, and chemicals from vehicles and factories. Monitoring air quality is important for protecting public health and the environment. Organizations often use tools like air quality index (AQI) to measure pollution levels and inform the public. When the AQI is high, it may be advisable to limit outdoor activities, especially for vulnerable groups like children and the elderly.