This is an archived article that was published on in 2013, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

As the haze visibly thickens, it looks like Northern Utah's pollution-trapping air inversion is not down for the count, shaking off the recent blows of a winter storm to once more clog urban valleys with smog.

While some snow was predicted for Thursday along the Wasatch Front, the Utah Division of Air Quality still forecast "Red," or unhealthy air alert days for Salt Lake, Davis, Box Elder, Cache, Weber and Utah counties. Duchesne and Tooele counties and the Uintas earned "Yellow," or compromised air quality grades.

Northern Utahns looked for highs in the mid-30s with overnight lows in the mid-20s. Some snowfall was possible early Thursday morning and again in the afternoon, the National Weather Service said.

Southern Utahns, though, anticipated highs in the upper-50s under gusty, mostly clear skies, with overnight lows in the 30s.

The Utah Avalanche Center issued "moderate"risk warnings for backcountry mountain snowslides for both Wednesday and Thursday statewide.

Salt Lake City's forecast high for Wednesday was 33, to be followed by an overnight low of 28 and a daytime high on Thursday of 35 degrees; Ogden looked for 32, 27 and 34 degrees, respectively; Provo 32, 26 and 38; Logan 26, 22 and 32; Wendover 32, 23 and 34; Duchesne 26, 9 and 28; Cedar City 42, 12 and 40; St. George 57, 32 and 60; and Moab 37, 18 and 41 degrees.

Twitter: @remims

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