How long will this inversion last? Utah might get a break later this week.

A storm won’t bring much snow, but it could clear out the smog.

(Francisco Kjolseth | The Salt Lake Tribune) A Frontrunner train and highway traffic move along the I-15 corridor on Friday Dec. 3, 2021. The current inversion could break up later this week.

The smog, haze and patchy fog plaguing northern Utah valleys is expected to sit stagnant for several more days. But a winter storm due later this week could clear most of it out, according to the National Weather Service.

The Utah Division of Air Quality is forecasting orange or “unhealthy for sensitive groups” air quality in Salt Lake and Davis counties through Thursday.

On Tuesday, Cache, Weber/Box Elder, Tooele and Utah counties will see yellow/moderate air quality, followed by orange/unhealthy for sensitive groups air quality on Wednesday and Thursday.

(National Weather Service) There's a chance that a storm could break up Utah's inversion.

In Salt Lake City, temperatures will top out at about 40 degrees through the end of the week, with overnight lows ranging from the mid-20s to about 30.

There’s a 60% chance of snow in the area on Thursday night, mainly after 11 p.m., and a 50% chance on Friday, mostly before 11 a.m.

Little or no accumulation is expected, but the storm is expected to clear out the inversion and return green/good air quality to valleys. The storm is the only one in the forecast through Monday.

In southern Utah, the forecast remains consistent through Monday. In the St. George area, expect daytime highs in the mid-50s; overnight lows in the low to mid-30s; mostly sunny skies; and no precipitation.

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