Stay updated with real-time air quality in Smithfield, Utah featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
39
Good
Smithfield, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.00 μg/m³
0
55
155
255
425
605+
42.00 ppb
0
55
71
86
201
201+
0.97 ppb
0
36
76
186
605
1005+
2.20 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Smithfield, Utah
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AQI 37
Good
5.20μg/m³
PM2.5
22.34μg/m³
PM10
39.90ppb
O3
1.09ppb
SO2
1.78ppb
NO2
0.10ppm
CO
AQI 40
Good
5.49μg/m³
PM2.5
23.78μg/m³
PM10
43.26ppb
O3
1.02ppb
SO2
2.14ppb
NO2
0.10ppm
CO
AQI 41
Good
4.79μg/m³
PM2.5
25.79μg/m³
PM10
44.27ppb
O3
0.91ppb
SO2
2.38ppb
NO2
0.10ppm
CO
AQI 41
Good
4.84μg/m³
PM2.5
25.64μg/m³
PM10
44.23ppb
O3
0.94ppb
SO2
2.33ppb
NO2
0.10ppm
CO
AQI 42
Good
4.48μg/m³
PM2.5
19.95μg/m³
PM10
45.07ppb
O3
0.82ppb
SO2
1.72ppb
NO2
0.10ppm
CO
AQI 48
Good
3.32μg/m³
PM2.5
18.04μg/m³
PM10
51.92ppb
O3
0.69ppb
SO2
2.69ppb
NO2
0.10ppm
CO
The air quality data for Utah, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Smithfield, Utah are available every hour.
Smithfield, Utah experienced its worst air quality at 12:00:00, 2026-08-18.
The best air quality in Smithfield, Utah was observed at 03:00:00 on 2026-08-18.
The air quality in Smithfield, Utah right now is Good, with an AQI of 39.
In Smithfield, Utah, O3 is the most frequently found pollutant.
When air quality in Smithfield, Utah is compromised, staying indoors and wearing a mask can reduce health risks.
Smithfield, Utah currently has a PM2.5 concentration of 6 μg/m3.
Smithfield, Utah currently has a PM10 concentration of 26.999 μg/m3.
The current carbon monoxide (CO) level in Smithfield, Utah is 0.1 ppm.
The current sulfur dioxide (SO2) concentration in Smithfield, Utah is 0.972 ppb.
Smithfield, Utah currently has an ozone (O3) concentration of 42.002 ppm.
The current level of nitrogen dioxide (NO2) in Smithfield, Utah is 2.2 ppb.
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