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)
22
Good
Smithfield, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.00 μg/m³
0
55
155
255
425
605+
24.00 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
3.20 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Smithfield, Utah
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AQI 33
Good
5.88μg/m³
PM2.5
26.18μg/m³
PM10
25.40ppb
O3
0.49ppb
SO2
3.35ppb
NO2
0.17ppm
CO
AQI 33
Good
5.73μg/m³
PM2.5
21.14μg/m³
PM10
26.76ppb
O3
0.48ppb
SO2
3.90ppb
NO2
0.17ppm
CO
AQI 29
Good
4.24μg/m³
PM2.5
25.09μg/m³
PM10
30.99ppb
O3
0.42ppb
SO2
4.54ppb
NO2
0.17ppm
CO
AQI 32
Good
3.30μg/m³
PM2.5
10.44μg/m³
PM10
34.84ppb
O3
0.47ppb
SO2
3.98ppb
NO2
0.17ppm
CO
AQI 37
Good
2.52μg/m³
PM2.5
10.08μg/m³
PM10
39.76ppb
O3
0.42ppb
SO2
1.59ppb
NO2
0.17ppm
CO
AQI 28
Good
3.19μg/m³
PM2.5
10.03μg/m³
PM10
30.14ppb
O3
0.41ppb
SO2
6.92ppb
NO2
0.20ppm
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 02:00:00, 2026-06-07.
The best air quality in Smithfield, Utah was observed at 10:00:00 on 2026-06-08.
The air quality in Smithfield, Utah right now is Good, with an AQI of 22.
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 4.3 μg/m3.
Smithfield, Utah currently has a PM10 concentration of 18.998 μg/m3.
The current carbon monoxide (CO) level in Smithfield, Utah is 0.218 ppm.
The current sulfur dioxide (SO2) concentration in Smithfield, Utah is 0.524 ppb.
Smithfield, Utah currently has an ozone (O3) concentration of 24.002 ppm.
The current level of nitrogen dioxide (NO2) in Smithfield, Utah is 3.202 ppb.
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