How many decibels are exceeded at night is a nuisance.

According to the law, the standard of noise disturbing people is that normal residential buildings exceed 55 decibels during the day and 45 decibels at night, which is regarded as disturbing people. However, the standards of noise disturbing people in different regions are different. For example, in a hospital, noise disturbance may be caused by noise exceeding 40 decibels at night. In case of noise pollution, you can complain to the local environmental protection bureau.

A, decibel more than how much is a nuisance, according to the specific situation analysis:

(1) For some relatively quiet environments, do not exceed 50 decibels during the day and 40 decibels at night;

(2) For use in residential areas or government offices, it shall not exceed 55 decibels during the day and 45 decibels at night;

(3) For commercial, residential and industrial areas, it shall not exceed 60 decibels during the day and 50 decibels at night;

(4) The industrial area shall not exceed 65 decibels during the day and 55 points at night;

(5) Road areas belonging to urban traffic or waterway areas passing through urban areas shall not exceed 70 decibels during the day and 55 decibels at night.

Second, what are the penalties for disturbing the people?

1, if you call the police, the police will generally give a warning first and ask not to continue to disturb the people;

2. If it continues to disturb the people, the police may impose public security penalties, fines or administrative detention 15 days or less as appropriate;

3. Seriously disturbing the social management order, if the circumstances are serious, it is suspected of committing a crime.

Legal basis:

"People's Republic of China (PRC) noise pollution prevention law" sixty-fourth.

It is forbidden to use tweeters in areas where noise-sensitive buildings are concentrated, except for emergencies and special circumstances stipulated by local people's governments.

Organizing or carrying out entertainment, fitness and other activities in public places such as streets, squares, parks, etc., shall abide by the regulations of public place operators on the activity area, time period and volume, and take effective measures to prevent noise pollution; Do not use audio equipment illegally to generate excessive volume.

Managers of public places should reasonably specify the area, time and volume of entertainment, fitness and other activities, and can take measures such as setting up automatic noise monitoring and display facilities to strengthen management.

"People's Republic of China (PRC) noise pollution prevention law" eighty-second.

Anyone who violates the provisions of this law and commits any of the following acts shall be persuaded and educated by the department designated by the local people's government and ordered to make corrections; Refuses to correct, given a warning, individuals may impose a fine of more than 200 yuan 1000 yuan, and units may impose a fine of more than 2,000 yuan and less than 20,000 yuan:

(a) Use loudspeakers in places where noise-sensitive buildings are concentrated;

(2) Organizing or carrying out entertainment, fitness and other activities in public places, failing to comply with the regulations of managers of public places on activity areas, time periods and volume, failing to take effective measures to cause noise pollution, or using audio equipment in violation of regulations to produce excessive volume;

(3) failing to carry out indoor decoration activities on the completed and delivered buildings within the specified working hours, or failing to take effective measures to cause noise pollution;

(four) other illegal acts caused by noise pollution in social life.