Kestrel Instruments

  1. How Heat Stress Is Managed at the Boston Marathon—And How to Check Race Day Conditions for Free

    How Heat Stress Is Managed at the Boston Marathon—And How to Check Race Day Conditions for Free The Boston Marathon is known for its challenging course and unpredictable spring weather. From cool starts to warmer midday conditions, race day can shift quickly, making heat stress monitoring a critical part of athlete safety. Understanding Race Day Heat Conditions Air temperature is only one part of the equation. During endurance events like... Read more...
  2. WBGT Monitoring for Mississippi Athletic Programs: New Policy Focuses on WBGT for Heat Stress Prevention

    WBGT Monitoring for Mississippi Athletic Programs: New Policy Focuses on WBGT for Heat Stress Prevention As an athletic trainer, you know that managing heat stress during outdoor practices and competitions is one of your most critical responsibilities. Many coaches and athletic trainers understand that air temperature alone tells only part of the story. That's where Wet Bulb Globe Temperature (WBGT) comes in, and why it's now the gold standard for ... Read more...
  3. Heat Stress and Weather Terms Glossary

    Heat Stress and Weather Terms Glossary Heat safety involves a specific vocabulary that mixes meteorology and occupational health - terms like WBGT, heat index, dew point, heat advisory, and heat dome all describe different things and shouldn't be used interchangeably. WBGT measures actual heat stress on the body using temperature, humidity, radiant heat, and wind; heat index estimates ... Read more...
  4. The World's Biggest Soccer Tournament Has a Heat Problem - and We're Measuring It in Real Time

    The World's Biggest Soccer Tournament Has a Heat Problem - and We're Measuring It in Real Time The 2026 FIFA World Cup kicked off this week to enormous fanfare - and an immediate reminder that summer soccer in North America comes at a cost. On opening day in Texas, more than 100 fans were treated for heat-related illness at a fan festival before a single whistle had blown.[1] Weather warnings blanketed the opening weekend,[2] with Dallas ... Read more...
  5. National Usage of Wet Bulb Globe Temperature in Athletics

    National Usage of Wet Bulb Globe Temperature in Athletics A brief guide to wet bulb globe temperature and complete list of every state and their stance on its usage in place of heat index for heatstroke prevention in athletes. On July 31st, 2001, in Mankato, Minnesota, heat sweltered around a group of Vikings Football players as they conducted their preseason trainings. One athlete, in particular, ... Read more...
  6. OSHA's Heat NEP Is Back — And It Has Teeth: What Employers Must Know for 2026

    OSHA's Heat NEP Is Back — And It Has Teeth: What Employers Must Know for 2026 Effective April 10, 2026 | Directive CPL 03-00-024 OSHA's National Emphasis Program (NEP) on heat-related hazards was fully revised and relaunched on April 10, 2026, replacing the original 2022 directive for a new five-year enforcement term. This isn't a paperwork update - it expands which industries are targeted, raises documentation expectations... Read more...
  7. What Is Humidex? Canada’s “Feels Like” Temperature—Now on the Kestrel 5400

    What Is Humidex? Canada’s “Feels Like” Temperature—Now on the Kestrel 5400 When people say, "It feels hotter than the temperature,” they're describing something real. Humidex is widely used in Canada as a "feels like” temperature-but it's not a heat stress standard like WBGT. Instead, it's a regional metric used in Canadian weather reporting and workplace guidance to describe how heat and humidity combine to impact ... Read more...
  8. How to Monitor Heat Stress at Work: A Practical Guide to WBGT and OSHA Compliance

    How to Monitor Heat Stress at Work: A Practical Guide to WBGT and OSHA Compliance As the Occupational Safety and Health Administration (OSHA) continues enforcement of its National Emphasis Program (NEP) on heat, one expectation is becoming clear: Employers must be able to accurately monitor heat stress conditions and act on that data. But what does effective heat stress monitoring actually look like in the field? This guide ... Read more...
  9. Is a 3-Minute Hydration Break Enough? What WBGT Tells Us About Real Heat Risk

    Is a 3-Minute Hydration Break Enough? What WBGT Tells Us About Real Heat Risk Hydration breaks are now guaranteed at every match in the 2026 FIFA World Cup™. It’s a clear step forward for player welfare. But it raises an important question: Is three minutes enough to reduce heat stress in high-heat conditions? What Hydration Breaks Actually Do Hydration breaks are designed to give players a short window to... Read more...
  10. What Are the 2026 OSHA Safety Rules for Heat Stress?

    What Are the 2026 OSHA Safety Rules for Heat Stress? What Businesses Need to Follow These Safety Rules? Understanding Written Heat Injury and Illness Prevention Plans (HIIPP) What Are Environmental Heat Triggers Business Heat Acclimatization Requirements OSHA Required Water, Shade, and Rest Breaks Monitoring and Observation Requirements... Read more...

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