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)
35
Good
Grand Junction, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.49 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.02 μg/m³
0
55
155
255
425
605+
38.07 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
1.00 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Grand Junction, Colorado
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AQI 32
Good
4.64μg/m³
PM2.5
20.42μg/m³
PM10
34.51ppb
O3
0.38ppb
SO2
1.80ppb
NO2
0.18ppm
CO
AQI 30
Good
4.04μg/m³
PM2.5
16.59μg/m³
PM10
32.23ppb
O3
0.66ppb
SO2
1.80ppb
NO2
0.12ppm
CO
AQI 25
Good
0.70μg/m³
PM2.5
3.00μg/m³
PM10
27.00ppb
O3
0.48ppb
SO2
1.61ppb
NO2
0.16ppm
CO
AQI 38
Good
3.23μg/m³
PM2.5
22.20μg/m³
PM10
41.12ppb
O3
0.47ppb
SO2
0.82ppb
NO2
0.16ppm
CO
AQI 31
Good
2.27μg/m³
PM2.5
12.38μg/m³
PM10
34.36ppb
O3
0.49ppb
SO2
1.21ppb
NO2
0.16ppm
CO
AQI 31
Good
1.32μg/m³
PM2.5
5.27μg/m³
PM10
33.93ppb
O3
1.40ppb
SO2
2.26ppb
NO2
0.14ppm
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 06:00:00, 2026-03-09.
The best air quality in Grand Junction, Colorado was observed at 05:00:00 on 2026-03-09.
The air quality in Grand Junction, Colorado right now is Good, with an AQI of 35.
In Grand Junction, Colorado, O3 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 5.491 μg/m3.
Grand Junction, Colorado currently has a PM10 concentration of 24.017 μg/m3.
The current carbon monoxide (CO) level in Grand Junction, Colorado is 0.177 ppm.
The current sulfur dioxide (SO2) concentration in Grand Junction, Colorado is 0.653 ppb.
Grand Junction, Colorado currently has an ozone (O3) concentration of 38.068 ppm.
The current level of nitrogen dioxide (NO2) in Grand Junction, Colorado is 1.003 ppb.
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