Temperature (°C / °F)

CAS Number: N/A
Temperature is a fundamental physical parameter in occupational health and safety, with both heat and cold extremes posing significant hazards to workers. Heat stress occurs when the body's thermoregulatory system is overwhelmed by a combination of metabolic heat generation and environmental heat load, potentially leading to heat cramps, heat exhaustion, and life-threatening heat stroke. Cold stress occurs in outdoor winter work, cold storage, and refrigeration environments, causing hypothermia and frostbite. Industrial hygienists assess thermal environments using dry bulb temperature, wet bulb globe temperature (WBGT), and other indices to evaluate heat and cold strain and develop protective controls.

Temperature monitoring identifies heat stress risks on job sites where workers are exposed to high ambient temperatures, radiant heat, or physically demanding conditions. Rent WBGT monitors and wearable heat stress sensors from RAECO Rents for construction, manufacturing, warehousing, and outdoor operations. All instruments are well maintained, annually calibrated, and functionally checked before shipment, with technical support to help you choose the right setup for your monitoring plan.

Regulatory Exposure Limits

Updated on March 09, 2026

OSHA PEL
TWA: N/A
STEL: N/A
C: N/A
NIOSH REL
TWA: N/A
STEL: N/A
C: N/A
ACGIH TLV
TWA: N/A
STEL: N/A
C: N/A
Frequently Asked Questions
Common questions about
Do I need spot temperature checks or continuous logging for heat stress monitoring?
Use spot checks to identify high-risk areas and assess conditions at a moment in time. Use continuous logging when you need to document how conditions change over a shift, verify that controls are effective, or build a record for heat illness prevention programs.
Do I need an area WBGT meter or a wearable heat stress monitor?
Use an area WBGT meter to characterize conditions in a work zone and compare against exposure limits. Use a wearable monitor when you need to track an individual worker's physiological response (heart rate, core temperature estimate) in addition to environmental conditions.
What should I know before renting heat stress or temperature monitoring equipment?
Confirm whether you need WBGT (for OSHA/ACGIH heat stress limits), standard dry-bulb temperature, or physiological monitoring. Also confirm whether you need a data logger for continuous recording or a handheld for spot assessments, and whether you need solar radiation shielding for outdoor work.
Where should a WBGT meter be placed?
Place it in the work zone at approximately breathing zone height, in the conditions workers experience—including direct sun and radiant heat sources if present. Avoid shaded or air-conditioned areas unless workers are actually working there.
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