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)
35
Good
Smithfield, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.00 μg/m³
0
55
155
255
425
605+
38.00 ppb
0
55
71
86
201
201+
0.71 ppb
0
36
76
186
605
1005+
3.10 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Smithfield, Utah
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AQI 36
Good
1.69μg/m³
PM2.5
7.24μg/m³
PM10
38.61ppb
O3
0.60ppb
SO2
1.33ppb
NO2
0.25ppm
CO
AQI 37
Good
1.90μg/m³
PM2.5
6.77μg/m³
PM10
39.99ppb
O3
0.61ppb
SO2
1.31ppb
NO2
0.25ppm
CO
AQI 41
Good
2.17μg/m³
PM2.5
6.54μg/m³
PM10
44.48ppb
O3
0.58ppb
SO2
1.20ppb
NO2
0.25ppm
CO
AQI 42
Good
2.55μg/m³
PM2.5
19.48μg/m³
PM10
44.56ppb
O3
0.60ppb
SO2
1.32ppb
NO2
0.25ppm
CO
AQI 42
Good
2.19μg/m³
PM2.5
8.94μg/m³
PM10
44.92ppb
O3
0.58ppb
SO2
0.56ppb
NO2
0.24ppm
CO
AQI 39
Good
1.81μg/m³
PM2.5
5.09μg/m³
PM10
42.05ppb
O3
0.59ppb
SO2
4.45ppb
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, 2026-04-24.
The best air quality in Smithfield, Utah was observed at 09:00:00 on 2026-04-23.
The air quality in Smithfield, Utah right now is Good, with an AQI of 35.
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 2.5 μg/m3.
Smithfield, Utah currently has a PM10 concentration of 9.999 μg/m3.
The current carbon monoxide (CO) level in Smithfield, Utah is 0.253 ppm.
The current sulfur dioxide (SO2) concentration in Smithfield, Utah is 0.711 ppb.
Smithfield, Utah currently has an ozone (O3) concentration of 38.001 ppm.
The current level of nitrogen dioxide (NO2) in Smithfield, Utah is 3.1 ppb.
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