Stay updated with real-time air quality in Grand Junction, Colorado 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)
52
Moderate
Grand Junction, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
55.84 μg/m³
0
55
155
255
425
605+
45.71 ppb
0
55
71
86
201
201+
0.71 ppb
0
36
76
186
605
1005+
2.46 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Grand Junction, Colorado
Grand Junction, Colorado
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AQI 40
Good
6.19μg/m³
PM2.5
29.54μg/m³
PM10
43.05ppb
O3
0.83ppb
SO2
3.96ppb
NO2
0.22ppm
CO
AQI 52
Moderate
6.89μg/m³
PM2.5
57.22μg/m³
PM10
44.54ppb
O3
0.72ppb
SO2
3.94ppb
NO2
0.24ppm
CO
AQI 46
Good
7.02μg/m³
PM2.5
49.55μg/m³
PM10
37.00ppb
O3
0.87ppb
SO2
2.66ppb
NO2
0.18ppm
CO
AQI 49
Good
8.96μg/m³
PM2.5
37.41μg/m³
PM10
45.47ppb
O3
0.76ppb
SO2
2.26ppb
NO2
0.20ppm
CO
AQI 36
Good
4.22μg/m³
PM2.5
25.23μg/m³
PM10
39.40ppb
O3
0.86ppb
SO2
2.12ppb
NO2
0.18ppm
CO
AQI 38
Good
5.65μg/m³
PM2.5
24.21μg/m³
PM10
40.92ppb
O3
0.74ppb
SO2
4.78ppb
NO2
0.26ppm
CO
The air quality data for Colorado, 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 Grand Junction, Colorado are available every hour.
Grand Junction, Colorado experienced its worst air quality at 05:00:00, 2025-07-14.
The best air quality in Grand Junction, Colorado was observed at 01:00:00 on 2025-07-14.
The air quality in Grand Junction, Colorado right now is Moderate, with an AQI of 52.
In Grand Junction, Colorado, PM2.5 is the most frequently found pollutant.
When air quality in Grand Junction, Colorado is compromised, staying indoors and wearing a mask can reduce health risks.
Grand Junction, Colorado currently has a PM2.5 concentration of 10.393 μg/m3.
Grand Junction, Colorado currently has a PM10 concentration of 55.837 μg/m3.
The current carbon monoxide (CO) level in Grand Junction, Colorado is 0.161 ppm.
The current sulfur dioxide (SO2) concentration in Grand Junction, Colorado is 0.712 ppb.
Grand Junction, Colorado currently has an ozone (O3) concentration of 45.711 ppm.
The current level of nitrogen dioxide (NO2) in Grand Junction, Colorado is 2.456 ppb.
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