Weather

• Cold or dry air or poor air quality, such as high ozone levels, may irritate the air passages and cause an asthma attack.
  
  

Allergens

• According to the Mayo Clinic, an asthma attack may be caused by allergens, including pollen, dust, pet dander or mold spores.
  
  

Exercise

• Exercise, whether light or strenuous, may cause an asthma attack depending on the particular individual and other circumstances, such as weather.
  
  

Smoke

• Smoke either from smoking cigarettes, cigars, pipes and other tobacco products or being around secondhand smoke can trigger an asthma attack.
  
  

Infections

• Infections, such as colds, influenza, bronchitis and pneumonia, temporarily weaken the lungs, and can cause an asthma attack.
  
  

Sinusitis

• Sinusitis is a medical term for chronic inflammation and infection of the sinuses and can trigger an asthma attack.
  
  

Acid reflux

• Acid reflux can irritate the throat and breathing tubes and cause an asthma attack, according to the Mayo Clinic.