Asthma: What time of the day is it worse?Apr 08, 2023
For many people with asthma, the time of the day when their symptoms are the worst can vary. However, there are some common times of the day when asthma symptoms tend to be more severe:
Early morning: Asthma symptoms can be worse in the early morning hours, particularly between 4 am and 6 am. This is because the body's natural circadian rhythms cause the airways to narrow during this time, making it more difficult to breathe.
Late at night: Similar to early morning, asthma symptoms can also be worse late at night. This may be due to changes in temperature and humidity, as well as an increase in indoor air pollution from things like dust mites and pet dander.