Sand Mountain Research Extension Center, Crossville, Alabama, 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
Sand Mountain Research Extension Center, Crossville, Alabama, United States
AQI Trends: Highest and Lowest
Same Day Analysis (21st October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Oct - 22nd Oct 2025
Sand Mountain Research Extension Center, Crossville, Alabama, United States
6 AM21st Oct 2025
6 PM
5 AM22nd Oct 2025
72AQI
50AQI
52AQI
33AQI
In the last 24 hours,
Sand Mountain Research Extension Center's AQI reached its highest point of 72 at 8 AM during the Day, while the lowest point, 33, was recorded at 1 AM during the Night between 21st Oct and 22nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Sand Mountain Research Extension Center, Crossville, Alabama, United States
25°C19/32°C
24°C19/31°C
23°C20/30°C
23°C21/27°C
22°C19/26°C
22°C17/30°C
23°C17/30°C
24°C18/29°C
23°C17/28°C
23°C18/30°C
21°C16/27°C
20°C14/27°C
20°C13/26°C
20°C17/26°C
22°C19/27°C
23°C20/28°C
22°C19/27°C
19°C14/24°C
18°C13/25°C
18°C11/25°C
18°C11/26°C
19°C11/27°C
20°C13/28°C
21°C14/30°C
21°C14/29°C
20°C12/29°C
21°C15/28°C
18°C11/21°C
14°C7/23°C
14°C7/22°C
--°C/°C
40AQI
32AQI
40AQI
31AQI
2025 Days Vs Air Quality
Sand Mountain Research Extension Center, Crossville, Alabama, United States
85%
177
15%
32
Total number of days with different AQI categories in last 295 days in 2025 (70 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 295 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Sand Mountain Research Extension Center, Crossville, Alabama, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
66AQI
62AQI
49AQI
24AQI
20AQI
37AQI
34AQI
44AQI
41AQI
21AQI
14AQI
27AQI
19AQI
43AQI
31AQI
31AQI
28AQI
48AQI
35AQI
24AQI
45AQI
59AQI
55AQI
54AQI
52AQI
37AQI
32AQI
39AQI
47AQI
30AQI
32AQI
39AQI
50AQI
53AQI
49AQI
37AQI
20AQI
19AQI
23AQI
30AQI
37AQI
45AQI
32AQI
26AQI
22AQI
19AQI
24AQI
35AQI
45AQI
50AQI
39AQI
41AQI
38AQI
44AQI
27AQI
24AQI
24AQI
29AQI
33AQI
23AQI
17AQI
19AQI
26AQI
21AQI
34AQI
53AQI
55AQI
61AQI
65AQI
52AQI
47AQI
44AQI
28AQI
33AQI
34AQI
51AQI
52AQI
31AQI
27AQI
30AQI
34AQI
26AQI
29AQI
23AQI
31AQI
32AQI
37AQI
52AQI
57AQI
58AQI
45AQI
48AQI
31AQI
33AQI
34AQI
34AQI
27AQI
38AQI
49AQI
60AQI
53AQI
55AQI
57AQI
51AQI
33AQI
33AQI
42AQI
46AQI
29AQI
33AQI
35AQI
31AQI
24AQI
33AQI
44AQI
46AQI
38AQI
38AQI
49AQI
34AQI
25AQI
23AQI
31AQI
37AQI
34AQI
39AQI
37AQI
32AQI
24AQI
31AQI
25AQI
26AQI
33AQI
43AQI
56AQI
49AQI
24AQI
20AQI
21AQI
23AQI
34AQI
36AQI
38AQI
39AQI
47AQI
42AQI
32AQI
41AQI
33AQI
26AQI
29AQI
26AQI
21AQI
26AQI
29AQI
30AQI
40AQI
46AQI
38AQI
38AQI
46AQI
56AQI
41AQI
25AQI
26AQI
31AQI
35AQI
42AQI
48AQI
41AQI
44AQI
49AQI
51AQI
51AQI
48AQI
49AQI
52AQI
54AQI
51AQI
51AQI
49AQI
21AQI
18AQI
22AQI
28AQI
30AQI
27AQI
23AQI
48AQI
45AQI
40AQI
32AQI
13AQI
38AQI
30AQI
26AQI
28AQI
40AQI
43AQI
49AQI
36AQI
31AQI
48AQI
48AQI
60AQI
33AQI
27AQI
52AQI
47AQI
37AQI
31AQI
41AQI
39AQI
33AQI
40AQI
38AQI
No. of days
202537AQI
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
May31AQI
Most & Least Polluted Years Over the Last 1 Years
Sand Mountain Research Extension Center's annual 2025 AQI (37) shows an average percentage change of NaN% (improved AQI) compared to previous years: .