Crested Butte, Colorado, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Crested Butte, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (23rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 19 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 23rd Oct - 24th Oct 2025
Crested Butte, Colorado, United States
7 AM23rd Oct 2025
6 PM
6 AM24th Oct 2025
42AQI
11AQI
38AQI
11AQI
In the last 24 hours,
Crested Butte's AQI reached its highest point of 42 at 3 PM during the Day, while the lowest point, 11, was recorded at 6 AM during the Night between 23rd Oct and 24th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Crested Butte, Colorado, United States
6°C-5/15°C
9°C1/18°C
10°C3/16°C
9°C3/17°C
9°C6/14°C
8°C0/14°C
7°C2/12°C
8°C1/14°C
9°C2/19°C
9°C2/17°C
6°C1/9°C
5°C-2/12°C
5°C-2/12°C
6°C-1/15°C
7°C0/17°C
7°C2/16°C
8°C7/9°C
9°C8/11°C
6°C-1/10°C
3°C-2/6°C
6°C2/11°C
7°C3/12°C
3°C-5/8°C
0°C-5/8°C
0°C-7/9°C
4°C-3/13°C
2°C-5/8°C
3°C-6/13°C
5°C-1/13°C
4°C-4/10°C
--°C/°C
19AQI
12AQI
19AQI
13AQI
2025 Days Vs Air Quality
Crested Butte, Colorado, United States
97%
206
3%
6
Total number of days with different AQI categories in last 297 days in 2025 (68 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 297 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
Crested Butte, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
30AQI
39AQI
29AQI
28AQI
27AQI
19AQI
17AQI
17AQI
16AQI
22AQI
18AQI
28AQI
23AQI
39AQI
45AQI
33AQI
23AQI
21AQI
20AQI
20AQI
21AQI
21AQI
17AQI
14AQI
14AQI
15AQI
18AQI
17AQI
16AQI
16AQI
17AQI
18AQI
16AQI
16AQI
16AQI
15AQI
18AQI
17AQI
19AQI
15AQI
14AQI
15AQI
17AQI
16AQI
19AQI
19AQI
24AQI
26AQI
21AQI
15AQI
15AQI
13AQI
15AQI
14AQI
14AQI
14AQI
17AQI
19AQI
18AQI
18AQI
18AQI
19AQI
20AQI
18AQI
21AQI
19AQI
19AQI
19AQI
15AQI
19AQI
16AQI
18AQI
21AQI
23AQI
25AQI
26AQI
23AQI
21AQI
22AQI
24AQI
23AQI
21AQI
20AQI
21AQI
22AQI
29AQI
35AQI
34AQI
21AQI
21AQI
23AQI
22AQI
27AQI
27AQI
24AQI
22AQI
24AQI
24AQI
23AQI
22AQI
26AQI
22AQI
20AQI
21AQI
22AQI
28AQI
59AQI
33AQI
25AQI
24AQI
34AQI
47AQI
43AQI
41AQI
29AQI
25AQI
23AQI
20AQI
22AQI
38AQI
31AQI
27AQI
33AQI
28AQI
27AQI
36AQI
37AQI
30AQI
24AQI
27AQI
42AQI
39AQI
37AQI
28AQI
26AQI
34AQI
40AQI
65AQI
56AQI
60AQI
56AQI
46AQI
30AQI
22AQI
22AQI
19AQI
30AQI
37AQI
35AQI
29AQI
33AQI
37AQI
33AQI
23AQI
20AQI
28AQI
29AQI
32AQI
35AQI
30AQI
33AQI
38AQI
48AQI
56AQI
40AQI
37AQI
26AQI
20AQI
15AQI
14AQI
13AQI
16AQI
19AQI
19AQI
16AQI
17AQI
18AQI
17AQI
16AQI
15AQI
13AQI
15AQI
14AQI
14AQI
14AQI
15AQI
18AQI
21AQI
15AQI
16AQI
20AQI
11AQI
13AQI
9AQI
18AQI
19AQI
17AQI
11AQI
10AQI
14AQI
18AQI
19AQI
13AQI
14AQI
13AQI
15AQI
20AQI
19AQI
21AQI
24AQI
19AQI
30AQI
20AQI
17AQI
23AQI
29AQI
34AQI
23AQI
16AQI
No. of days
202524AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
October16AQI
Most & Least Polluted Years Over the Last 1 Years
Crested Butte's annual 2025 AQI (24) shows an average percentage change of NaN% (improved AQI) compared to previous years: .