The Danger of Mold Growth in Cars During Summer

The Danger of Mold Growth in Cars During Summer

Are you planning on leaving your car parked in the sun for an extended time this summer? You might want to reconsider. Many car owners often overlook the potential risks associated with mold growth in cars during the summer.


Mold thrives in warm, humid conditions and can cause significant health problems if inhaled by passengers. In fact, long-term exposure to mold can cause allergic reactions, respiratory problems, and even depression. Here's what you need to know about mold growth in cars and how to protect yourself.

Causes of Mold Growth in Cars

Mold can grow anywhere there's excess moisture and lack of sunlight. Cars, especially those parked outside for long periods, create the perfect breeding ground for mold. Here are some common causes of mold growth in cars during summer:

  • Humidity: Rain or humidity from the air can seep into your car's carpets, seats, and upholstery.
  • Air Conditioning: When you turn off your car's AC, moisture accumulates inside the system, creating the perfect environment for mold.
  • Spills: Spills from drinks or food can create moisture, providing an excellent spot for mold to grow.
  • Poor Ventilation: If your car is not well-ventilated, moisture can accumulate, leading to mold growth.

Symptoms of Mold Exposure

Exposure to mold can have both physical and psychological effects. Here are some common symptoms of mold exposure:

  • Sneezing and coughing
  • Skin irritation
  • Headaches
  • Respiratory problems
  • Exacerbation of asthma or allergies
  • Anxiety and depression

Prevention of Mold Growth

The best way to protect yourself and your car's passengers from mold growth is to take preventative measures. Here are some tips to help prevent mold growth in your car this summer:

  • Park in a shaded area or garage: Avoid parking your car directly in the sun.
  • Use a dehumidifier: Using a dehumidifier can remove excess moisture from your car's interior.
  • Clean up spills immediately: Do not leave spills on your car's surfaces. Remove them immediately to avoid moisture accumulation.
  • Keep your windows open: Leaving your windows open can help to ensure proper ventilation.
  • Get your air conditioning system cleaned: Regular cleaning of your car's AC system can help to prevent moisture accumulation.


Mold growth in cars during summer can pose serious health risks to passengers. Identifying the causes and taking proper steps to prevent mold growth can keep you and your passengers safe and healthy. If you suspect mold growth in your car, it's best to contact a professional to have it properly removed.