Fire & Smoke Management
- Air Monitoring Particulate Data
- Air Quality Conditions Web Cam
- Health Effect Categories
- Breakpoint & Associated Visibility
- Visibility Ranges
- State & Federal AQ Standards
- Open Burning Information
- Prescribed Burning
- Other Interesting Fire Links
- Forest Fire Smoke Report
From State Medical Officer Steven D. Helgerson, MD, MPH Pertinent information on acute and long-term effects from smoke exposure.
- Montana Dept. of Public Health
& Human Services News Release on the health impacts of wildfire smoke.
- Wildfire Smoke - A Guide for Public Health Officials
- Open Burning Rules
- 77- 5-103(3)
- 76-13-102(7)
- 76-13-109
- These rules (MCA) apply to all activities on all classified forest land within Montana during the legal fire season, included any extension there of.

Smoke Management in Montana
| Health Effect Categories | 24-Hour TEOM (ug/m3) 1 |
8-Hour TEOM (ug/m3) 2 |
1-Hour TEOM (ug/m3) 3 |
Visibility (miles)4 |
|---|---|---|---|---|
| Good | 0.0 - 15.4 | 0.0 - 22.0 | 0.0 - 40.0 | > 11.25 |
| Moderate | 15.5 - 40.4 | 22.1 - 57.7 | 40.1 - 80.0 | 5.62 - 11.24 |
| Unhealthy for Sensitive Groups | 40.5 - 65.4 |
57.8 - 93.4 |
80.1 - 175.0 |
2.57 - 5.61 |
| Unhealthy | 65.5 - 150.4 | 93.5 - 214.9 | 175.1 - 300.0 | 1.50 - 2.56 |
| Very Unhealthy | 150.5 - 250.4 | 215.0 - 357.7 | 300.1 - 500.0 | 0.9 - 1.49 |
| Hazardous | > 250.5 | > 357.8 | > 500.1 | < 0.9 |
- Guideline For Reporting Of Daily Air Quality – Air Quality Index (AQI),
EPA-454/R-99-010, July 1999, U.S. Environmental Protection Agency,
Office of Air Quality Planning and Standards, Research Triangle Park,,
North Carolina, 27711. - Applied U.S. EPA SCREEN adjustment factor for 8-hour, 0.7, multiplied
to the 24-hour PM-2.5 Pollutant Standards Index. - Fire, Smoke and Health Workshop, Seattle, WA, June 5 - 6, 2001. USEPA,
CDC, W. - Based on Helena Montana empirical study (July 2000 Montana Dept. of
Environmental Quality).

