Wildfire Smoke and Air Quality (AQI)

Talking points

1. Wildfire smoke contains fine particulate matter (PM2.5) that penetrates deep into the lungs and can aggravate asthma, heart disease, and other respiratory conditions.
2. The Air Quality Index (AQI) measures pollution levels. At AQI 101-150 (Unhealthy for Sensitive Groups), consider reducing heavy exertion outdoors. Above 200, consider stopping outdoor work.
3. N95 respirators provide protection against smoke particles but not against gases and vapors in smoke. Voluntary use of N95s for smoke still requires Appendix D compliance.
4. Symptoms of smoke exposure include coughing, scratchy throat, irritated eyes, headache, and shortness of breath. Workers with asthma or heart conditions are at highest risk.
5. Monitor the AQI throughout the day using AirNow.gov or a portable PM2.5 monitor. Smoke conditions can change rapidly depending on wind direction and fire activity.

Ask the crew

What is the AQI today — and do we have N95 respirators available if smoke rolls in?

Standards this talk is built on

• Section 5(a)(1)

A toolbox talk is a short safety briefing. It supports the training a standard requires; it does not replace it.

Sign-in sheet

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