Air quality index (AQI) is a method to evaluate air quality. It evaluates the air quality according to the concentration of various pollutants in the air and gives the corresponding grades. When the air quality index in Laizhou, Yantai is 199 today, the air quality is moderately polluted.
For the general population, we should try to avoid high-intensity outdoor activities and minimize outdoor time; For sensitive people such as children, the elderly, patients with heart and respiratory diseases, high-intensity outdoor exercise should be avoided to reduce outdoor exposure time. At the same time, people are advised to pay attention to keeping the indoor air fresh, and air purifiers and other equipment can be used to purify the indoor air.
Air quality solutions
Conventional ventilation: Window ventilation is the most commonly used and basic method to improve indoor air quality. Ensure that the frequency, time and intensity of ventilation are reasonable, and the best ventilation time is in the morning and evening.
2. Buy an air purifier: The air purifier can filter harmful substances such as gas, odor, particulate matter and bacteria in the indoor air, which can effectively improve the indoor air quality. But whether the air can be purified depends on the brand and technology of the purifier, the use area and the amount of air purified.
3. Humidifier to maintain proper air humidity: In dry season, air humidifier can be used to maintain proper humidity of indoor air, but attention should be paid to problems such as taste and corruption.
Reference to the above content: Baidu Encyclopedia-Laizhou City