Heat Stress Articles

  1. Indoor Heat Stress Monitoring for Workers: Why WBGT Matters More Than Heat Index

    Indoor Heat Stress Monitoring for Workers: Why WBGT Matters More Than Heat Index Indoor heat stress is a growing occupational safety risk across warehouses, manufacturing plants, distribution centers, food processing facilities, and commercial kitchens. While many employers assume heat illness is primarily an outdoor problem, indoor environments often trap heat, restrict airflow, and generate additional radiant load from ... Read more...
  2. What Is WBGT? A Practical Guide to Wet Bulb Globe Temperature

    What Is WBGT? A Practical Guide to Wet Bulb Globe Temperature Wet Bulb Globe Temperature (WBGT) is a heat-stress index used to estimate how hot conditions feel to the human body during work, sports, or physical activity-especially in direct sun. Unlike plain air temperature, WBGT accounts for multiple factors that drive heat strain, including humidity (your ability to sweat and cool), radiant heat (sun or hot... Read more...
  3. Arizona's Heat Challenge: Protecting Workers in a Warming State

    Arizona's Heat Challenge: Protecting Workers in a Warming State Arizona's extreme summer temperatures are more than an inconvenience - they are a serious occupational hazard. With annual average highs in Phoenix often exceeding 100°F and record-breaking heat waves becoming the norm, workers across industries face real and life-threatening risks. From construction crews under the desert sun to warehouse ... Read more...
  4. What Kind of Conditions Can Lead to Wet Bulb Events in the United States?

    What Kind of Conditions Can Lead to Wet Bulb Events in the United States? When most people think about extreme heat, they imagine soaring air temperatures. But a critical factor that determines how dangerous heat can become is humidity. Wet-bulb temperature is a climate metric that combines air temperature and humidity to indicate how well the human body can cool itself through sweating. When humidity is high and ... Read more...
  5. Heat Stress Policy Update: Where States Stand in 2026

    Heat Stress Policy Update: Where States Stand in 2026 As extreme heat events become more frequent and intense, heat illness prevention has shifted from a seasonal concern to a year-round policy priority. Across the United States, states are taking different approaches to protect workers from dangerous heat exposure — ranging from enforceable standards to active rulemaking to executive-level ... Read more...
  6. The Critical Role of Wind in Accurate WBGT Measurement

    The Critical Role of Wind in Accurate WBGT Measurement When it comes to protecting workers and athletes from heat stress, Wet Bulb Globe Temperature (WBGT) is widely recognized as the gold standard. It goes beyond simple air temperature to account for humidity, radiant heat, and ambient conditions that influence how the body gains and loses heat. Yet one factor is often underestimated in the ... Read more...
  7. How PPE Increases Heat Stress Risk: Understanding Clothing Adjustment Factors and Corrected WBGT

    How PPE Increases Heat Stress Risk: Understanding Clothing Adjustment Factors and Corrected WBGT Personal protective equipment (PPE) saves lives. But in hot environments, it can also increase the risk of heat stress. For industrial hygienists, EHS managers, safety professionals, and occupational health leaders, understanding how protective clothing affects heat burden is essential. When PPE is worn, standard environmental heat measurements ... Read more...
  8. Heat Is Becoming a Workplace Safety Crisis Why Clear Standards Like WBGT Matter

    Heat Is Becoming a Workplace Safety Crisis Why Clear Standards Like WBGT Matter Extreme heat is no longer an occasional inconvenience for workers-it's a growing occupational hazard with real, and sometimes fatal, consequences. Across the globe, rising temperatures and more frequent heatwaves are forcing governments, employers, and labor organizations to rethink how work gets done when conditions become dangerous. A recent push... Read more...
  9. What Are the Symptoms of Heat Stress?

    What Are the Symptoms of Heat Stress? Heat stress is a serious health concern for anyone working or spending time in high-temperature environments. As global temperatures rise and extreme heat events become more frequent, recognizing the symptoms of heat stress is more important than ever. For employers, workers, athletes, and the general public, early identification can be the key to ... Read more...
  10. Are There Different Types of Heat Stress?

    Are There Different Types of Heat Stress? Heat stress is not a single condition. It refers to a range of heat-related illnesses that vary in severity, causes, and symptoms. From mild skin irritation to life-threatening emergencies, heat stress takes many forms, and each requires different responses and prevention measures. Understanding the various types of heat stress is essential for ... Read more...

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