Wildfire smoke from the Widemouth 2 fire and other regional blazes is expected to create hazy conditions across much of Utah through Wednesday, causing decreasing air quality and reduced visibility in several areas. The National Weather Service warned that smoke from fires to the north and west will bring smoke aloft into much of the state over the coming days, potentially impacting several monitored basins.
Regional Smoke and Visibility Impacts
The Widemouth 2 wildfire has produced prolific smoke across central Utah, according to the National Weather Service Salt Lake City. As of a forecast issued late Sunday night, smoke modeling indicated the plume would shift into the Nephi area and east into the upper Sanpete Valley, Castle Country, and the Wasatch Plateau overnight. This movement is expected to cause decreasing air quality and reduced visibility in those specific regions.
In addition to the local impact of the Widemouth 2 fire, the National Weather Service noted that wildfires located to the north and west of Utah will bring smoke aloft into much of the state over the next several days. This regional smoke is expected to contribute to hazy conditions that could persist through at least Wednesday across the region, with the most severe conditions occurring near active local wildfires like the Widemouth 2.
Air Quality and Health Advisories
The Utah Department of Environmental Quality is monitoring several basins across northern Utah, forecasting that conditions may meet the orange or unhealthy for sensitive groups threshold through at least Monday or Tuesday, depending on the specific basin.
As of 11:00 AM on August 3, 2026, the Utah Department of Environmental Quality reported that Salt Lake County recorded a PM 2.5 concentration of 27.6 µg/m3 and an ozone level of 0.049 ppm. The temperature in the area was recorded at 77 F with a wind speed of 3.4 mph from the west.
Health officials warn that smoke from wildfires can cause high concentrations of particulate matter. The Utah Department of Environmental Quality advises that if smoke becomes thick, individuals with existing heart or respiratory ailments should reduce physical exertion and outdoor activity.
Fire Weather and Heat Warnings
The National Weather Service has issued several watches and warnings in response to current weather patterns. Red Flag Warnings remain in effect for portions of eastern and southern Utah through Tuesday evening. Specifically, a Red Flag Warning is in place for UTZ482 until 9 PM MDT Tuesday, and another is in effect for UTZ489 from noon today until 9 PM MDT Tuesday. A third Red Flag Warning remains in effect until 10 PM MDT this evening for areas UTZ481, UTZ483, UTZ484, and UTZ498.
Extreme heat is also a significant factor. The National Weather Service issued an Extreme Heat Warning for areas UTZ123, UTZ124, and UTZ128 through UTZ131 until 9 PM MDT this evening. Additionally, a Heat Advisory is in effect until 9 PM MDT this evening for areas UTZ114 through UTZ121. In the lower Washington County and Zion National Park areas, Excessive Heat Warnings have been extended through Monday.
Meteorological Drivers of Fire Risk
The current fire weather conditions are being driven by a variety of meteorological factors. A dry cold front is currently progressing across northern Utah into central Utah, expected to continue progressing southeast through Monday afternoon. This front is expected to result in a wind shift to the northwest with a modest improvement in humidity, primarily in higher elevation locations.
However, areas southeast of the cold front will continue to experience critical fire weather conditions throughout Monday afternoon due to little to no overnight recovery and persistent breezy conditions. By Tuesday afternoon, the cold front is expected to have crossed through Utah, though breezy winds are expected to persist, bringing another round of critical fire weather conditions to the San Rafael Swell and western Uinta Basin through Tuesday evening. Elevated to locally critical fire weather conditions are expected to persist in these areas through Wednesday as conditions remain dry and breezy.
Interagency Coordination
The Northwest Coordination Center (NWCC) continues to manage resource coordination and predictive services for the Northwest Region, which includes Oregon and Washington. As of a July 28, 2026, advisory, the NWCC reported the Northwest Preparedness Level is at 5, matching the National Preparedness Level of 5.
The NWCC serves as a focal point for interagency resource coordination and logistics support for state and federal agencies involved in wildland fire management, including the Bureau of Land Management, US Forest Service, and the National Park Service. The center provides daily situation reports and significant fire potential outlooks to assist in suppression efforts across the region.
Public Guidance
While the National Weather Service noted that smoke from Pacific Northwest wildfires may cause borderline visibility issues in some areas like KHCR this morning, those conditions are expected to erode following sunrise. Residents are encouraged to monitor air quality through official channels and follow guidance from the Utah Department of Environmental Quality regarding outdoor activities and travel to mitigate health impacts.
Monitoring Air Quality
The AirNow interactive map, which provides real-time air quality data, notes that all readings are preliminary and subject to change. The map includes data for monitors across the U.S., Canada, and Mexico, providing NowCast AQI and contour maps to help residents track pollutant levels such as Ozone and PM2.5.
