Ignacio, 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
Ignacio, Colorado, United States
AQI Trends: Highest and Lowest
Same Day Analysis (26th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 20 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 26th Oct - 27th Oct 2025
Ignacio, Colorado, United States
7 AM26th Oct 2025
6 PM
6 AM27th Oct 2025
50AQI
12AQI
29AQI
17AQI
In the last 24 hours,
Ignacio's AQI reached its highest point of 50 at 11 AM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 26th Oct and 27th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ignacio, Colorado, United States
15°C8/23°C
14°C10/19°C
15°C9/22°C
15°C8/21°C
15°C7/23°C
16°C6/27°C
16°C9/26°C
14°C7/21°C
11°C3/21°C
13°C5/22°C
14°C4/24°C
15°C7/23°C
15°C10/22°C
13°C10/15°C
13°C12/16°C
13°C9/18°C
12°C7/17°C
13°C10/17°C
14°C10/16°C
8°C3/15°C
6°C0/15°C
8°C0/19°C
10°C2/20°C
10°C4/20°C
9°C2/19°C
10°C3/19°C
10°C5/17°C
7°C2/15°C
8°C2/16°C
9°C2/17°C
--°C/°C
16AQI
11AQI
15AQI
12AQI
2025 Days Vs Air Quality
Ignacio, Colorado, United States
95%
204
5%
10
0.4%
1
Total number of days with different AQI categories in last 300 days in 2025 (65 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 300 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
Ignacio, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
23AQI
29AQI
27AQI
50AQI
45AQI
27AQI
17AQI
20AQI
18AQI
14AQI
16AQI
21AQI
23AQI
26AQI
38AQI
34AQI
27AQI
27AQI
24AQI
22AQI
19AQI
22AQI
18AQI
19AQI
20AQI
17AQI
18AQI
19AQI
20AQI
21AQI
22AQI
26AQI
26AQI
18AQI
24AQI
20AQI
21AQI
24AQI
27AQI
19AQI
18AQI
19AQI
16AQI
19AQI
21AQI
27AQI
25AQI
26AQI
28AQI
21AQI
19AQI
20AQI
24AQI
22AQI
23AQI
23AQI
29AQI
28AQI
23AQI
24AQI
23AQI
23AQI
29AQI
28AQI
25AQI
30AQI
31AQI
26AQI
24AQI
22AQI
19AQI
24AQI
27AQI
32AQI
29AQI
26AQI
23AQI
24AQI
31AQI
30AQI
22AQI
26AQI
28AQI
30AQI
33AQI
46AQI
38AQI
35AQI
27AQI
35AQI
24AQI
22AQI
25AQI
28AQI
33AQI
35AQI
26AQI
23AQI
23AQI
22AQI
31AQI
24AQI
26AQI
24AQI
24AQI
26AQI
57AQI
51AQI
52AQI
40AQI
42AQI
57AQI
55AQI
42AQI
28AQI
26AQI
24AQI
24AQI
27AQI
48AQI
38AQI
25AQI
24AQI
26AQI
22AQI
24AQI
36AQI
28AQI
25AQI
42AQI
51AQI
34AQI
38AQI
36AQI
35AQI
46AQI
33AQI
75AQI
62AQI
54AQI
55AQI
50AQI
36AQI
23AQI
25AQI
25AQI
25AQI
41AQI
47AQI
34AQI
26AQI
29AQI
28AQI
29AQI
27AQI
30AQI
27AQI
35AQI
37AQI
26AQI
28AQI
26AQI
27AQI
31AQI
46AQI
117AQI
37AQI
22AQI
16AQI
17AQI
14AQI
21AQI
24AQI
23AQI
19AQI
21AQI
26AQI
20AQI
16AQI
16AQI
15AQI
17AQI
18AQI
17AQI
15AQI
13AQI
14AQI
15AQI
11AQI
9AQI
10AQI
11AQI
13AQI
11AQI
14AQI
12AQI
9AQI
7AQI
8AQI
8AQI
8AQI
15AQI
9AQI
10AQI
13AQI
14AQI
13AQI
17AQI
19AQI
24AQI
19AQI
21AQI
18AQI
20AQI
32AQI
22AQI
23AQI
29AQI
33AQI
37AQI
25AQI
13AQI
No. of days
202527AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
October13AQI
Most & Least Polluted Years Over the Last 1 Years
Ignacio's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .