Alamosa, 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
Alamosa, 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 24 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
Alamosa, Colorado, United States
7 AM23rd Oct 2025
6 PM
6 AM24th Oct 2025
40AQI
14AQI
22AQI
14AQI
In the last 24 hours,
Alamosa's AQI reached its highest point of 40 at 1 PM during the Day, while the lowest point, 14, was recorded at 6 AM during the Night between 23rd Oct and 24th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Alamosa, Colorado, United States
12°C4/20°C
13°C3/24°C
13°C4/23°C
13°C4/23°C
13°C7/21°C
13°C5/23°C
12°C3/21°C
12°C3/23°C
14°C5/25°C
14°C4/26°C
12°C5/21°C
9°C-1/21°C
10°C0/23°C
11°C2/23°C
12°C2/23°C
13°C4/23°C
14°C7/21°C
14°C9/22°C
13°C6/21°C
10°C5/18°C
13°C8/20°C
14°C6/22°C
10°C3/17°C
7°C0/16°C
7°C-1/18°C
9°C-1/22°C
9°C0/20°C
9°C0/19°C
9°C0/19°C
9°C1/18°C
--°C/°C
24AQI
14AQI
20AQI
13AQI
2025 Days Vs Air Quality
Alamosa, Colorado, United States
96%
203
4%
9
Total number of days with different AQI categories in last 297 days in 2025 (68 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% 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
Alamosa, Colorado, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
31AQI
30AQI
24AQI
48AQI
51AQI
37AQI
29AQI
22AQI
28AQI
30AQI
20AQI
24AQI
38AQI
31AQI
38AQI
34AQI
31AQI
25AQI
25AQI
28AQI
27AQI
39AQI
24AQI
17AQI
15AQI
19AQI
22AQI
19AQI
18AQI
21AQI
31AQI
30AQI
22AQI
20AQI
19AQI
18AQI
22AQI
24AQI
27AQI
24AQI
16AQI
17AQI
20AQI
23AQI
26AQI
21AQI
23AQI
24AQI
32AQI
25AQI
21AQI
23AQI
30AQI
25AQI
25AQI
29AQI
29AQI
34AQI
22AQI
22AQI
25AQI
19AQI
22AQI
21AQI
27AQI
32AQI
35AQI
25AQI
18AQI
21AQI
18AQI
20AQI
23AQI
26AQI
28AQI
27AQI
26AQI
22AQI
25AQI
28AQI
31AQI
26AQI
22AQI
32AQI
33AQI
44AQI
35AQI
30AQI
29AQI
28AQI
23AQI
22AQI
24AQI
24AQI
26AQI
27AQI
25AQI
24AQI
22AQI
23AQI
32AQI
29AQI
33AQI
28AQI
27AQI
33AQI
47AQI
49AQI
39AQI
30AQI
37AQI
57AQI
51AQI
43AQI
32AQI
26AQI
23AQI
21AQI
22AQI
29AQI
38AQI
32AQI
26AQI
28AQI
24AQI
25AQI
42AQI
27AQI
23AQI
32AQI
48AQI
50AQI
46AQI
39AQI
36AQI
48AQI
55AQI
66AQI
58AQI
57AQI
62AQI
53AQI
31AQI
25AQI
26AQI
21AQI
29AQI
43AQI
37AQI
32AQI
30AQI
36AQI
26AQI
21AQI
22AQI
26AQI
20AQI
25AQI
29AQI
28AQI
30AQI
34AQI
35AQI
41AQI
34AQI
35AQI
21AQI
21AQI
14AQI
14AQI
12AQI
15AQI
21AQI
19AQI
18AQI
18AQI
22AQI
18AQI
15AQI
15AQI
15AQI
15AQI
17AQI
16AQI
16AQI
17AQI
15AQI
15AQI
16AQI
19AQI
20AQI
23AQI
13AQI
8AQI
22AQI
22AQI
17AQI
20AQI
24AQI
12AQI
11AQI
14AQI
20AQI
9AQI
11AQI
17AQI
17AQI
21AQI
20AQI
26AQI
24AQI
35AQI
26AQI
24AQI
27AQI
32AQI
37AQI
21AQI
18AQI
No. of days
202527AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
October18AQI
Most & Least Polluted Years Over the Last 1 Years
Alamosa's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .