Carbondale, 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
Carbondale, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 16 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Oct - 17th Oct 2025
Carbondale, Colorado, United States
7 AM16th Oct 2025
6 PM
6 AM17th Oct 2025
18AQI
6AQI
35AQI
8AQI
In the last 24 hours,
Carbondale's AQI reached its highest point of 35 at 5 AM during the Night, while the lowest point, 6, was recorded at 2 PM during the Day between 16th Oct and 17th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Carbondale, Colorado, United States
10°C0/21°C
12°C1/23°C
11°C2/22°C
12°C5/22°C
13°C4/23°C
12°C5/22°C
8°C2/15°C
11°C0/22°C
13°C2/25°C
13°C3/23°C
15°C5/27°C
15°C9/20°C
12°C3/21°C
12°C5/21°C
12°C3/21°C
14°C4/25°C
15°C5/26°C
9°C-1/17°C
7°C-2/18°C
8°C-1/18°C
9°C-1/21°C
11°C1/24°C
12°C5/23°C
13°C9/16°C
12°C7/16°C
8°C-2/13°C
6°C-1/12°C
12°C7/20°C
12°C4/21°C
5°C-2/13°C
--°C/°C
21AQI
14AQI
22AQI
14AQI
2025 Days Vs Air Quality
Carbondale, Colorado, United States
99%
285
1%
4
Total number of days with different AQI categories in last 290 days in 2025 (75 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 290 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
Carbondale, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
33AQI
25AQI
20AQI
20AQI
21AQI
19AQI
22AQI
19AQI
21AQI
20AQI
22AQI
23AQI
23AQI
22AQI
22AQI
24AQI
20AQI
20AQI
20AQI
23AQI
22AQI
24AQI
20AQI
21AQI
28AQI
31AQI
27AQI
26AQI
26AQI
26AQI
24AQI
20AQI
23AQI
24AQI
24AQI
24AQI
25AQI
21AQI
21AQI
22AQI
23AQI
23AQI
15AQI
16AQI
16AQI
13AQI
14AQI
14AQI
14AQI
16AQI
16AQI
14AQI
15AQI
12AQI
13AQI
14AQI
13AQI
16AQI
18AQI
17AQI
18AQI
13AQI
13AQI
10AQI
11AQI
11AQI
17AQI
32AQI
30AQI
17AQI
29AQI
63AQI
20AQI
17AQI
19AQI
22AQI
18AQI
20AQI
16AQI
16AQI
14AQI
16AQI
18AQI
20AQI
21AQI
24AQI
24AQI
27AQI
27AQI
20AQI
16AQI
16AQI
18AQI
16AQI
17AQI
21AQI
23AQI
31AQI
37AQI
33AQI
26AQI
27AQI
20AQI
23AQI
21AQI
21AQI
16AQI
18AQI
18AQI
17AQI
19AQI
21AQI
22AQI
19AQI
19AQI
23AQI
16AQI
15AQI
17AQI
15AQI
18AQI
18AQI
20AQI
18AQI
16AQI
16AQI
19AQI
21AQI
21AQI
21AQI
24AQI
25AQI
24AQI
17AQI
18AQI
19AQI
20AQI
18AQI
21AQI
18AQI
21AQI
24AQI
24AQI
21AQI
18AQI
23AQI
23AQI
20AQI
24AQI
26AQI
24AQI
23AQI
21AQI
23AQI
21AQI
22AQI
25AQI
29AQI
31AQI
28AQI
25AQI
26AQI
29AQI
30AQI
24AQI
23AQI
26AQI
27AQI
25AQI
34AQI
34AQI
32AQI
25AQI
28AQI
25AQI
25AQI
30AQI
32AQI
32AQI
31AQI
28AQI
25AQI
25AQI
24AQI
29AQI
25AQI
23AQI
23AQI
25AQI
26AQI
41AQI
45AQI
44AQI
36AQI
35AQI
46AQI
47AQI
40AQI
30AQI
25AQI
23AQI
22AQI
24AQI
34AQI
34AQI
32AQI
30AQI
32AQI
32AQI
33AQI
43AQI
33AQI
27AQI
27AQI
39AQI
43AQI
45AQI
40AQI
35AQI
40AQI
33AQI
48AQI
46AQI
48AQI
54AQI
48AQI
36AQI
21AQI
23AQI
19AQI
25AQI
32AQI
34AQI
33AQI
32AQI
33AQI
34AQI
28AQI
25AQI
33AQI
32AQI
33AQI
34AQI
29AQI
36AQI
44AQI
58AQI
59AQI
45AQI
35AQI
28AQI
18AQI
16AQI
15AQI
14AQI
17AQI
19AQI
20AQI
18AQI
19AQI
22AQI
21AQI
17AQI
17AQI
16AQI
20AQI
15AQI
15AQI
15AQI
17AQI
23AQI
28AQI
18AQI
18AQI
23AQI
15AQI
16AQI
11AQI
20AQI
23AQI
19AQI
14AQI
9AQI
16AQI
21AQI
20AQI
15AQI
16AQI
23AQI
18AQI
21AQI
21AQI
20AQI
27AQI
32AQI
35AQI
25AQI
17AQI
No. of days
202524AQI
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
October17AQI
202425AQI
Highest AQI recorded in
April50AQI
Lowest AQI recorded in
March0AQI
202315AQI
Highest AQI recorded in
July30AQI
Lowest AQI recorded in
November3AQI
202253AQI
Highest AQI recorded in
August118AQI
Lowest AQI recorded in
May15AQI
202135AQI
Highest AQI recorded in
September48AQI
Lowest AQI recorded in
June30AQI
202036AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
October33AQI
Most & Least Polluted Years Over the Last 6 Years
Carbondale's annual 2025 AQI (24) shows an average percentage change of -12.1% (improved AQI) compared to previous years: 2020 (36), 2021 (35), 2022 (53), 2023 (15), 2024 (25).