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)
42
Good
St. George, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.92 μg/m³
0
55
155
255
425
605+
45.35 ppb
0
55
71
86
201
201+
0.06 ppb
0
36
76
186
605
1005+
1.15 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
St. George, Utah
St. George, Utah
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AQI 41
Good
6.05μg/m³
PM2.5
26.67μg/m³
PM10
44.37ppb
O3
0.05ppb
SO2
1.13ppb
NO2
0.12ppm
CO
AQI 44
Good
3.53μg/m³
PM2.5
15.33μg/m³
PM10
46.99ppb
O3
0.05ppb
SO2
1.10ppb
NO2
0.12ppm
CO
AQI 42
Good
6.17μg/m³
PM2.5
27.28μg/m³
PM10
44.76ppb
O3
0.05ppb
SO2
1.13ppb
NO2
0.12ppm
CO
AQI 50
Good
2.11μg/m³
PM2.5
8.40μg/m³
PM10
54.09ppb
O3
0.07ppb
SO2
0.86ppb
NO2
0.11ppm
CO
AQI 40
Good
5.29μg/m³
PM2.5
22.97μg/m³
PM10
42.63ppb
O3
0.03ppb
SO2
1.47ppb
NO2
0.13ppm
CO
AQI 40
Good
3.23μg/m³
PM2.5
13.98μg/m³
PM10
43.24ppb
O3
0.20ppb
SO2
3.52ppb
NO2
0.13ppm
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 12:00:00, 2026-04-24.
The best air quality in St. George, Utah was observed at 11:00:00 on 2026-04-23.
The air quality in St. George, Utah right now is Good, with an AQI of 42.
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 5.294 μg/m3.
St. George, Utah currently has a PM10 concentration of 22.92 μg/m3.
The current carbon monoxide (CO) level in St. George, Utah is 0.119 ppm.
The current sulfur dioxide (SO2) concentration in St. George, Utah is 0.055 ppb.
St. George, Utah currently has an ozone (O3) concentration of 45.353 ppm.
The current level of nitrogen dioxide (NO2) in St. George, Utah is 1.15 ppb.
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