Can I open the window for ventilation in foggy days?

You can open the window for ventilation in foggy weather.

Haze weather has existed since ancient times, and many human activities or natural phenomena may lead to haze weather. Try to reduce the window opening time, and you can choose to ventilate for 20 minutes in the morning and evening. After the air is ventilated, it is not easy to breed bacteria, viruses and molds indoors. From the natural law, whether in winter or summer, the outdoor air is humid in the morning, and the oxygen content is much higher than that in the room, so after opening the window in the morning, although the outdoor air is polluted, it feels much more comfortable.

At eight or nine o'clock in the evening, when everyone is ready to sleep, the air quality outside is better than indoors. In foggy days, outdoor air pollution is serious, which is unhealthy to human body, but this kind of pollution has a weaker impact on human body than indoor air pollution. In addition, outdoor air can't be blocked by doors and windows, and it will enter the room through the gap between doors and windows.

It is not advisable to open the window four times.

1, smog, dust and other weather.

In foggy days, outdoor air is seriously polluted by particulate matter, so doors and windows should be closed to reduce the impact of air pollution on indoor air quality. You can choose to use air purifiers and humidifiers to improve the living environment.

It's raining very little.

In light rain, the wind speed is small, which is not conducive to the dilution and diffusion of pollutants. Various pollutants suspended in the atmosphere will form wet deposition due to precipitation erosion, which will aggravate air pollution. When it rains or clears up for a while, the outdoor air gradually becomes fresh and the negative oxygen ions in the air begin to increase. At this time, it is best to open the window for ventilation.

3. windy days

It is easy to raise dust when the wind blows, which leads to the diffusion of pollutants in the air. When the wind is weak, open the window, but don't fully open it, just open a crack. The wind force is above 5, so it's best to close the window temporarily.

4. Morning and evening rush hours

In the morning and evening rush hours, industrial pollution and automobile exhaust worsen air quality. Especially near the road, the air is more turbid.