Wildfire Smoke & Crew Protection: Tracking EPA AQI at the Job Site

The Rising Threat of Wildfire Particulate Hazards

As summer temperatures increase, wildfire smoke has emerged as a severe occupational health threat for outdoor workforces across the United States. Fine particulate matter (PM2.5) travels thousands of miles, turning seemingly clear sky regions into hazardous environments within hours. For roofers, builders, and landscaping crews, breathing this air during high-exertion shifts is hazardous to long-term health and triggers severe liability under local state labor rules.

Understanding EPA Air Quality Index (AQI) Limits

State OSHA entities (like Cal/OSHA and OR-OSHA) enforce mandatory procedures based on the current local AQI:

• AQI 101 to 150: Recommended voluntary respirator usage (e.g. N95 masks) and shift modification.
• AQI 151 or Greater (Hazardous Trigger): Mandates providing N95 respirators to all outdoor workers and establishing written air quality monitoring plans.

The Challenge of Real-Time Site Auditing

Unlike weather forecasts which are widely distributed, air quality levels shift rapidly depending on shifting wind patterns. Standard weather apps do not provide granular hourly PM2.5 tracking. If a supervisor keeps workers on a roofing project when the local AQI hits 160 without supplying N95 protection, your business faces substantial compliance fines.

Automated Environmental Tracking

ShiftGuard bridges this information gap. Our background monitoring system integrates directly with the EPA AirNow API to fetch real-time PM2.5 observations for your exact site locations. If conditions cross your customized thresholds (e.g., 150 AQI), an alert is sent directly to your supervisor on the ground so they can hand out masks or pause work immediately.