What time of day is the cleanest air and which time of day is the most turbid?

Generally after 10 a.m., the ground air is fresh. Therefore, the time to exercise in the morning should be after sunrise, and it is best to choose 10 a.m. and 3 or 4 p.m. for recess and recess exercises, because the air is freshest at this time.

The morning air is often considered to be the freshest. Actually, this is a misunderstanding.

Whether the air is fresh or not depends on the severity of the air pollution. The main causes of air pollution are the soot emitted by factories, the exhaust gases emitted by various motor vehicles, the flue gas from residents' stoves, and the carbon dioxide produced by the nighttime metabolism of green plants. According to the test, in the 24 hours of a day, the air pollution in the morning, noon and afternoon is very light, so the air is relatively fresh and clean, of which the air is the freshest around 10 am and 3 or 4 pm; Air pollution is more severe in the morning, evening and evening, with the peak pollution at around 7 p.m. and 7 a.m., when the air is at its worst.

The reason for the difference in the freshness of the air throughout the day is mainly due to meteorological factors. Due to the obvious change of vertical temperature difference between day and night, when the ground temperature is higher than the upper-air temperature, the air on the ground is easy to rise, and the pollutants are easy to be carried to the upper altitude and disperse. When the surface temperature is lower than the temperature at the upper altitude, an inversion layer forms in the sky", which presses above the ground like a big lid, so that various pollutants in the ground air cannot diffuse. Inversion is generally seen at night, in the morning and in the evening, so the air is at its most polluted during these times.

The air is fresh in the morning because it has been purified overnight, and it is the most turbid at noon because the air is muggy.

At noon and in the afternoon of the day, the air is cleaner than at other times. In particular, air pollution is relatively low at around 10 a.m. and 3 p.m. every day. Air pollution is worse in the morning and evening.

Many people like to go for a run in the morning or after dinner, and they think that the air during this period is relatively fresh, but it turns out that the air during this time is more polluted.

Inhaling more air than you normally inhale during exercise, so be sure to choose a time when the air is fresh when exercising. Because exercising during this time, we can breathe fresher air, and can relieve our tension, which can make our mood more comfortable. The freshness of the air depends mainly on air pollution.

The main sources of air pollution are factories and cars. Because the morning and evening are the peak times for people to go to work, there are many problems with car shooting, so the pollution is more serious during this time, and the air is relatively not very fresh. However, the oxygen content in the evening is relatively high.

Because trees photosynthesize for a day, they release a lot of oxygen. However, it does not mean that the air at this time is relatively fresh. Oxygen is high, but there are also a lot of harmful substances in the air, so the evening is not the best time to exercise.

So when we choose a workout, we must choose the right time period. Morning workouts should be done after the sun rises, especially around 10 o'clock. The freshness of the air depends mainly on two aspects.

One is whether the air is clean or not, and the second is the amount of oxygen in the air. Although there is less dust in the air in the morning, the oxygen content is also relatively low. Although the oxygen content is relatively high at night, there are many harmful substances.

So the air is freshest at 10 a.m. and 3 p.m. during the day, so we can use it to relax and not waste this great time. At this time, the oxygen content is relatively high, and the harmful substances are relatively less, which is more suitable for exercise.

Of course, the air is fresher at night, and many industries have stopped working at night. Then the air is full of heavy breath, and it is natural to breathe in more fresh them.

Many people think that the air in the morning is wrong, in fact, it is just dawn in the morning, plants are photosynthesizing at this time, carbon dioxide will be released, the air quality is the worst, and the best is in the evening, plants from photosynthesis to respiration, will release a large amount of oxygen, which is very beneficial to human breathing.

Experimental studies have shown that around 10 a.m. and 3 p.m. are the two relatively optimal periods every day. Therefore, we remind everyone to cherish this good time. This is because exercising will not only relieve you from tension, but also allow you to breathe in high-quality fresh air.

It depends on the local air quality, but the air is usually best at 10 a.m. or 15 p.m. because the sun has fully risen but is not in the middle.

According to research, the air is fresher and cleaner at noon and afternoon during the 24-hour day, while the air is more polluted in the morning, evening and evening, especially around 7 p.m. and 7 a.m.

Good luck at ninety o'clock in the morning.

The air is at its freshest in the summer of each year.

The air is at its freshest from 10 a.m. to 2 p.m. every day.

The cleanest is between 2 and 5 a.m. Because at this time, the atmospheric indices are optimal.