The Seasonal Impact: Understanding How Radon Levels Fluctuate Throughout the Year Seasonal Radon Variation | Radon Test in Lockport

By Quality Environmental Testing – Lockport, Illinois📞 708-243-5945 | 🌐 www.qualityenvironmentaltestinginc.com

Changing Seasons, Changing Radon Risks Seasonal Radon Variation | Radon Test in Lockport

Seasonal Radon Variation | Radon Test in Lockport. As the seasons shift in Illinois — from freezing winters to humid summers — the dynamics of radon gas inside our homes change too. Understanding how radon levels fluctuate throughout the year is key to maintaining a safe and healthy home environment.

At Quality Environmental Testing (QET), based in Lockport, we help homeowners across the Chicago South and Southwest Suburbs monitor, understand, and reduce radon exposure year-round using professional radon testing and same-day results.

Spring: When the Ground Awakens, So Does Radon

When spring thaw arrives and the frozen ground begins to soften, radon trapped beneath the soil is suddenly released. As moisture and temperature rise, this gas begins to move freely through the soil and into our homes — especially those with cracks, sump pits, or unfinished basements.

Because the soil becomes more porous in spring, radon levels often peak during this season, making it one of the most important times to test.

Spring is the perfect opportunity to schedule your professional radon test. QET’s SunRADON monitors record hourly data for 48 hours and deliver electronic results the same day, helping you act quickly if elevated levels are found.

Summer: Open Windows, Temporary Relief

During summer, we tend to open our windows and doors, increasing airflow throughout the home. This natural ventilation helps dilute radon gas, which is why indoor concentrations often drop during warmer months.

But don’t let the summer breeze fool you — radon can still be a concern, particularly in air-conditioned homes where windows remain closed for long periods.

To stay safe:

• Test at least once every two years, even if previous results were low.

• If you’re buying or selling a home, ask for a professional radon test.

• Inspect and seal foundation cracks and sump lids while weather allows.

Fall: Preparing for the Radon Build-Up Ahead

As cooler weather returns, we begin closing up our homes. Less ventilation means radon that seeps in through foundations or crawl spaces is more likely to accumulate indoors.

Fall is a smart time to test before winter arrives, when radon levels typically climb. By addressing issues early, you’ll ensure your family breathes easier all season long.

At QET, we often find elevated radon results in homes tested between October and January, when sealed indoor conditions allow gases to build up more quickly.

Winter: The Perfect Storm for Radon Accumulation

Winter presents the highest risk for radon exposure in Illinois homes. When doors and windows stay tightly shut, furnaces run constantly, and the ground freezes solid, indoor air pressure drops — pulling radon up from the soil into your home.

Snow cover acts as a cap that prevents radon from venting outdoors, forcing it through foundation cracks and sump pits instead.

Testing during winter provides a true worst-case scenario for your home’s radon levels. If results exceed 4.0 pCi/L, the EPA recommends immediate mitigation.

QET partners with trusted local mitigation professionals to install systems that can reduce radon levels by up to 99%, ensuring your home remains safe year-round.

Protect Your Family Year-Round

Radon may be invisible, but its effects are very real. It’s the second leading cause of lung cancer in the U.S. — yet simple testing can prevent serious risk.

If it’s been more than two years since your last test, or if you’ve never had your home professionally tested, now’s the time.

📞 Call Quality Environmental Testing today at 708-243-5945to schedule your radon test with same-day results and peace of mind for every season.