Stay updated with real-time air quality in St. George, 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
St. George, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.70 μg/m³
0
55
155
255
425
605+
38.19 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
3.42 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
St. George, Utah
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AQI 33
Good
5.30μg/m³
PM2.5
25.68μg/m³
PM10
35.57ppb
O3
0.45ppb
SO2
3.67ppb
NO2
0.24ppm
CO
AQI 33
Good
5.17μg/m³
PM2.5
26.31μg/m³
PM10
35.60ppb
O3
0.43ppb
SO2
5.00ppb
NO2
0.24ppm
CO
AQI 33
Good
5.52μg/m³
PM2.5
24.04μg/m³
PM10
35.02ppb
O3
0.44ppb
SO2
1.44ppb
NO2
0.24ppm
CO
AQI 34
Good
4.50μg/m³
PM2.5
17.01μg/m³
PM10
37.01ppb
O3
0.41ppb
SO2
7.91ppb
NO2
0.25ppm
CO
AQI 33
Good
6.09μg/m³
PM2.5
26.89μg/m³
PM10
33.13ppb
O3
0.47ppb
SO2
1.16ppb
NO2
0.24ppm
CO
AQI 52
Moderate
10.28μg/m³
PM2.5
41.76μg/m³
PM10
32.78ppb
O3
0.25ppb
SO2
12.44ppb
NO2
0.35ppm
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 St. George, Utah are available every hour.
St. George, Utah experienced its worst air quality at 03:00:00, 2026-03-10.
The best air quality in St. George, Utah was observed at 10:00:00 on 2026-03-10.
The air quality in St. George, Utah right now is Good, with an AQI of 35.
In St. George, Utah, O3 is the most frequently found pollutant.
When air quality in St. George, Utah is compromised, staying indoors and wearing a mask can reduce health risks.
St. George, Utah currently has a PM2.5 concentration of 4.973 μg/m3.
St. George, Utah currently has a PM10 concentration of 21.705 μg/m3.
The current carbon monoxide (CO) level in St. George, Utah is 0.21 ppm.
The current sulfur dioxide (SO2) concentration in St. George, Utah is 0.474 ppb.
St. George, Utah currently has an ozone (O3) concentration of 38.186 ppm.
The current level of nitrogen dioxide (NO2) in St. George, Utah is 3.416 ppb.
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