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)
49
Good
St. George, Utah
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.53 μg/m³
0
55
155
255
425
605+
23.84 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
2.53 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
St. George, Utah
St. George, Utah
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AQI 33
Good
6.22μg/m³
PM2.5
20.20μg/m³
PM10
22.96ppb
O3
0.52ppb
SO2
2.44ppb
NO2
0.32ppm
CO
AQI 25
Good
3.47μg/m³
PM2.5
12.15μg/m³
PM10
27.14ppb
O3
0.58ppb
SO2
2.56ppb
NO2
0.32ppm
CO
AQI 24
Good
2.19μg/m³
PM2.5
9.92μg/m³
PM10
26.13ppb
O3
0.57ppb
SO2
2.00ppb
NO2
0.32ppm
CO
AQI 24
Good
2.01μg/m³
PM2.5
9.03μg/m³
PM10
26.01ppb
O3
0.62ppb
SO2
3.08ppb
NO2
0.33ppm
CO
AQI 24
Good
3.81μg/m³
PM2.5
17.56μg/m³
PM10
26.14ppb
O3
0.55ppb
SO2
2.39ppb
NO2
0.32ppm
CO
AQI 52
Moderate
10.34μg/m³
PM2.5
25.61μg/m³
PM10
27.65ppb
O3
0.78ppb
SO2
9.14ppb
NO2
0.23ppm
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 05:00:00, 2025-12-07.
The best air quality in St. George, Utah was observed at 04:00:00 on 2025-12-07.
The air quality in St. George, Utah right now is Good, with an AQI of 49.
In St. George, Utah, PM2.5 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 8.936 μg/m3.
St. George, Utah currently has a PM10 concentration of 23.533 μg/m3.
The current carbon monoxide (CO) level in St. George, Utah is 0.32 ppm.
The current sulfur dioxide (SO2) concentration in St. George, Utah is 0.477 ppb.
St. George, Utah currently has an ozone (O3) concentration of 23.836 ppm.
The current level of nitrogen dioxide (NO2) in St. George, Utah is 2.53 ppb.
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