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The U.S. Embassy's AQI is calculated based on concentration values only, while the Beijing Environmental Protection Center monitors PM10, sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and ozone (O3) at the same time(AQI) Technical Provisions [Trial]".
When there is a big change in Beijing's air quality, such as a sudden strong wind after several days of haze, the air quality index AQI of the U.S. embassy will change rapidly with the decrease of concentration, while the air quality index AQI of the Beijing Environmental Monitoring Center does not change significantly. This is because when the Environmental Monitoring Center calculates the air quality sub-index, the data used is not the current concentration but the average concentration of the past 24 hours (PM10 is the same, and other pollutants are calculated by the 1-hour average), while the US Embassy uses the real-time concentration value for calculation. While the concentrations of the Environmental Protection Center and the U.S. Embassy are similar, the AQI values released by the two sides may be very different.
The calculation methods of the two are different and cannot be simply compared.
So if you're going to run, it's best to pay attention to the real-time update rather than the mean U.S. Embassy Index, which is below 100, and it's safe!
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Below 50 is suitable for outdoor jogging.
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Air IndexGenerally below 100 is suitable for running.
The lower the air index, the better it is for running, and generally speaking, the more suitable air quality index.
If it's below 100 and above 150, you don't want to run outside. If conditions permit, you can run indoors with better conditions, but outdoor haze, indoor air quality will not be too good.
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The air quality pants crack index is a quantitative indicator of air quality. Generally, the air quality below 50 is excellent, 100-50 is good, 100-150 is lightly polluted, 150 200 is heavily polluted, and above 200 is severely polluted. Generally speaking, the more suitable the air quality index is below 100, and the air quality index is above 150, so you should not go to outdoor sports.
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The Air Quality Index (AQI) is a standardized metric used to describe the level of pollutants in the local air. If you plan to do running or other strenuous exercise, it is recommended that the AQI do not exceed 100. When the AQI exceeds 100, the air may affect the body's ability to inhale, affecting breathing and athletic performance.
Therefore, vigorous exercise with an AQI above 100 may lead to health problems. Please note that AQI is only a measure of air pollution levels, other factors such as weather, temperature, altitude, etc. can also affect your performance. Therefore, consult your doctor's advice and consider your local weather and air quality conditions before skating for any heavy exercise.
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The Air Quality Index (AQI) is a quantitative indicator of air quality. Generally, air quality below 50 is excellent, 100-50 is good, 100-200 is moderately polluted, and above 200 is severely polluted.
The lower the air index, the better it is for running, and generally speaking, the more suitable AQI is below 100.
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