Glasgow, Montana, 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
Glasgow, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Glasgow, Montana, United States
6 AM2nd Oct 2025
7 PM
5 AM3rd Oct 2025
28AQI
23AQI
39AQI
23AQI
In the last 24 hours,
Glasgow's AQI reached its highest point of 39 at 11 PM during the Night, while the lowest point, 23, was recorded at 4 PM during the Day between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Glasgow, Montana, United States
17°C9/24°C
17°C13/21°C
13°C5/20°C
14°C3/24°C
18°C6/30°C
22°C13/30°C
21°C12/29°C
22°C12/32°C
24°C18/32°C
22°C13/30°C
19°C16/24°C
20°C13/28°C
21°C13/28°C
20°C13/26°C
19°C12/26°C
17°C10/26°C
16°C11/24°C
19°C10/29°C
21°C13/31°C
17°C13/23°C
15°C5/26°C
20°C11/31°C
17°C9/26°C
16°C9/23°C
16°C5/28°C
20°C10/31°C
19°C11/27°C
22°C14/31°C
19°C13/26°C
16°C7/26°C
--°C/°C
25AQI
24AQI
26AQI
25AQI
2025 Days Vs Air Quality
Glasgow, Montana, United States
87%
165
12%
22
1%
2
0.5%
1
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 276 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
Glasgow, Montana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI
21AQI
20AQI
18AQI
21AQI
19AQI
24AQI
24AQI
21AQI
17AQI
14AQI
17AQI
14AQI
14AQI
15AQI
21AQI
17AQI
17AQI
17AQI
16AQI
18AQI
15AQI
14AQI
14AQI
13AQI
14AQI
14AQI
18AQI
16AQI
17AQI
18AQI
20AQI
18AQI
15AQI
15AQI
16AQI
17AQI
19AQI
23AQI
20AQI
16AQI
21AQI
21AQI
33AQI
35AQI
23AQI
26AQI
29AQI
28AQI
17AQI
20AQI
17AQI
18AQI
18AQI
13AQI
16AQI
17AQI
16AQI
19AQI
19AQI
16AQI
17AQI
19AQI
19AQI
26AQI
94AQI
98AQI
50AQI
44AQI
33AQI
35AQI
36AQI
41AQI
58AQI
57AQI
66AQI
161AQI
134AQI
73AQI
33AQI
23AQI
26AQI
26AQI
27AQI
26AQI
23AQI
26AQI
24AQI
28AQI
31AQI
28AQI
21AQI
20AQI
16AQI
17AQI
16AQI
19AQI
22AQI
24AQI
24AQI
21AQI
21AQI
23AQI
32AQI
29AQI
25AQI
64AQI
69AQI
39AQI
25AQI
37AQI
33AQI
52AQI
31AQI
25AQI
25AQI
23AQI
37AQI
32AQI
47AQI
30AQI
24AQI
21AQI
21AQI
43AQI
59AQI
53AQI
41AQI
38AQI
35AQI
27AQI
28AQI
26AQI
26AQI
21AQI
25AQI
104AQI
70AQI
37AQI
53AQI
35AQI
25AQI
25AQI
21AQI
23AQI
30AQI
36AQI
34AQI
28AQI
31AQI
26AQI
28AQI
30AQI
35AQI
41AQI
40AQI
41AQI
41AQI
39AQI
67AQI
74AQI
83AQI
38AQI
39AQI
44AQI
55AQI
58AQI
61AQI
54AQI
50AQI
45AQI
38AQI
36AQI
36AQI
54AQI
42AQI
39AQI
41AQI
43AQI
36AQI
45AQI
35AQI
63AQI
39AQI
40AQI
47AQI
45AQI
39AQI
37AQI
38AQI
19AQI
17AQI
23AQI
43AQI
33AQI
36AQI
48AQI
38AQI
No. of days
202533AQI
Highest AQI recorded in
September48AQI
Lowest AQI recorded in
April17AQI
Most & Least Polluted Years Over the Last 1 Years
Glasgow's annual 2025 AQI (33) shows an average percentage change of NaN% (improved AQI) compared to previous years: .