Grand Junction, Colorado, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Grand Junction, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 13th Aug - 14th Aug 2026
Grand Junction, Colorado, United States
6 AM13th Aug 2026
8 PM
5 AM14th Aug 2026
43AQI
30AQI
41AQI
26AQI
In the last 24 hours,
Grand Junction's AQI reached its highest point of 43 at 10 AM during the Day, while the lowest point, 26, was recorded at 11 PM during the Night between 13th Aug and 14th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Grand Junction, Colorado, United States
29°C21/39°C
29°C20/36°C
30°C22/39°C
32°C23/40°C
32°C23/41°C
31°C22/42°C
28°C22/36°C
29°C20/36°C
32°C23/40°C
33°C25/42°C
34°C27/42°C
32°C23/40°C
32°C24/40°C
30°C24/39°C
29°C19/38°C
31°C21/41°C
32°C22/42°C
32°C20/43°C
32°C21/42°C
32°C21/41°C
30°C18/40°C
30°C19/40°C
31°C19/41°C
31°C19/41°C
31°C20/41°C
31°C22/40°C
31°C23/39°C
28°C20/36°C
23°C18/30°C
24°C18/33°C
45AQI
35AQI
43AQI
38AQI
2026 Days Vs Air Quality
Grand Junction, Colorado, United States
97%
216
3%
6
Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 226 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Grand Junction, Colorado, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
32AQI (US)
24AQI (US)
29AQI (US)
27AQI (US)
17AQI (US)
20AQI (US)
22AQI (US)
14AQI (US)
21AQI (US)
22AQI (US)
31AQI (US)
27AQI (US)
30AQI (US)
24AQI (US)
30AQI (US)
28AQI (US)
26AQI (US)
24AQI (US)
27AQI (US)
26AQI (US)
38AQI (US)
44AQI (US)
46AQI (US)
42AQI (US)
38AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
40AQI (US)
28AQI (US)
34AQI (US)
34AQI (US)
32AQI (US)
36AQI (US)
34AQI (US)
35AQI (US)
30AQI (US)
31AQI (US)
40AQI (US)
36AQI (US)
29AQI (US)
38AQI (US)
48AQI (US)
50AQI (US)
36AQI (US)
32AQI (US)
39AQI (US)
36AQI (US)
42AQI (US)
40AQI (US)
32AQI (US)
34AQI (US)
31AQI (US)
36AQI (US)
31AQI (US)
33AQI (US)
42AQI (US)
38AQI (US)
34AQI (US)
44AQI (US)
31AQI (US)
41AQI (US)
44AQI (US)
36AQI (US)
29AQI (US)
26AQI (US)
38AQI (US)
36AQI (US)
30AQI (US)
33AQI (US)
35AQI (US)
28AQI (US)
34AQI (US)
31AQI (US)
27AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
24AQI (US)
20AQI (US)
34AQI (US)
28AQI (US)
32AQI (US)
28AQI (US)
28AQI (US)
31AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
32AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
22AQI (US)
27AQI (US)
31AQI (US)
24AQI (US)
22AQI (US)
20AQI (US)
28AQI (US)
24AQI (US)
34AQI (US)
32AQI (US)
28AQI (US)
28AQI (US)
22AQI (US)
20AQI (US)
17AQI (US)
16AQI (US)
18AQI (US)
23AQI (US)
32AQI (US)
25AQI (US)
18AQI (US)
20AQI (US)
19AQI (US)
21AQI (US)
22AQI (US)
20AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
16AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
17AQI (US)
21AQI (US)
23AQI (US)
21AQI (US)
24AQI (US)
27AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
16AQI (US)
16AQI (US)
16AQI (US)
17AQI (US)
16AQI (US)
23AQI (US)
19AQI (US)
17AQI (US)
16AQI (US)
20AQI (US)
16AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
18AQI (US)
26AQI (US)
16AQI (US)
15AQI (US)
20AQI (US)
18AQI (US)
15AQI (US)
14AQI (US)
16AQI (US)
17AQI (US)
20AQI (US)
25AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
20AQI (US)
51AQI (US)
18AQI (US)
14AQI (US)
24AQI (US)
32AQI (US)
17AQI (US)
14AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
46AQI (US)
76AQI (US)
50AQI (US)
45AQI (US)
36AQI (US)
28AQI (US)
31AQI (US)
34AQI (US)
39AQI (US)
23AQI (US)
39AQI (US)
42AQI (US)
32AQI (US)
36AQI (US)
32AQI (US)
30AQI (US)
32AQI (US)
42AQI (US)
36AQI (US)
38AQI (US)
39AQI (US)
24AQI (US)
30AQI (US)
36AQI (US)
44AQI (US)
44AQI (US)
39AQI (US)
40AQI (US)
40AQI (US)
38AQI (US)
40AQI (US)
52AQI (US)
50AQI (US)
58AQI (US)
56AQI (US)
46AQI (US)
59AQI (US)
46AQI (US)
40AQI (US)
36AQI (US)
36AQI (US)
29AQI (US)
36AQI (US)
31AQI (US)
24AQI (US)
21AQI (US)
21AQI (US)
36AQI (US)
46AQI (US)
No. of days
202629AQI (US)
Highest AQI (US) recorded in
August46AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202528AQI (US)
Highest AQI (US) recorded in
July37AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202421AQI (US)
Highest AQI (US) recorded in
December40AQI (US)
Lowest AQI (US) recorded in
May14AQI (US)
202319AQI (US)
Highest AQI (US) recorded in
November26AQI (US)
Lowest AQI (US) recorded in
June14AQI (US)
202223AQI (US)
Highest AQI (US) recorded in
January40AQI (US)
Lowest AQI (US) recorded in
July13AQI (US)
202126AQI (US)
Highest AQI (US) recorded in
August43AQI (US)
Lowest AQI (US) recorded in
May15AQI (US)
202025AQI (US)
Highest AQI (US) recorded in
August41AQI (US)
Lowest AQI (US) recorded in
March12AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Grand Junction's annual 2026 AQI (US) (29) shows an average percentage change of 24.6% (worsened AQI (US)) compared to previous years: 2020 (25), 2021 (26), 2022 (23), 2023 (19), 2024 (21), 2025 (28).