Relative Humidity—Trend Charts
                                     Box Elder
                                     Cache
                                     Carbon
                                     Davis
                                     Duchesne
                                     Grand
                                     Iron
                                     Salt Lake
                                     Tooele
                                     Uintah
                                     Utah
                                     Wasatch
                                     Washington
                                     Weber
                                
                
                                     PM 2.5
                                     PM 10
                                     Ozone
                                     Nitrogen Oxides (NO)
                                     Carbon Monoxide (CO)
                                     Sulfur Dioxide (SO2)
                                     Temperature
                                     Relative Humidity
                                     Wind
                                     Solar Radiation
                                
            
                            
            Last Updated: November 4, 2025 6:00 AM
(Data Not Quality Assured)
                
                
                
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| Action Forecast | 
|---|
Unrestricted Action![]()  | 
		
Voluntary Action![]()  | 
		
Mandatory Action![]()  | 
		
| Health Forecast | ||
|---|---|---|
| Air Quality Index (AQI) | PM 2.5 | Ozone | 
| Good | 0 - 9.0 µg/m3 | 0 - 0.054 ppm | 
| Moderate | 9.1 - 35.4 µg/m3 | 0.055 - 0.070 ppm | 
| Unhealthy for Sensitive Groups | 35.5 - 55.4 µg/m3 | 0.071 - 0.085 ppm | 
| Unhealthy | 55.5 - 125.4 µg/m3 | 0.086 - 0.105 ppm | 
| Very Unhealthy | 125.5 - 225.4 µg/m3 | 0.106 - 0.200 ppm | 
| Hazardous | Above 225.5 µg/m3 | Above 0.201 ppm | 
| Based on a 24-hour average. | Based on an 8-hour average. | |


