Girard, Montana, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Girard, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Girard, Montana, United States
6 AM28th Sep 2025
7 PM
5 AM29th Sep 2025
63AQI
48AQI
64AQI
46AQI
In the last 24 hours,
Girard's AQI reached its highest point of 64 at 11 PM during the Night, while the lowest point, 46, was recorded at 8 PM during the Night between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Girard, Montana, United States
--°C/°C
23°C14/31°C
24°C15/32°C
19°C13/25°C
15°C7/20°C
16°C11/20°C
11°C5/17°C
13°C3/22°C
17°C5/29°C
21°C11/31°C
21°C11/29°C
22°C11/32°C
25°C18/32°C
21°C15/27°C
21°C17/25°C
19°C15/25°C
21°C16/29°C
21°C13/28°C
19°C12/25°C
15°C12/18°C
17°C13/23°C
19°C11/28°C
21°C11/32°C
19°C11/27°C
17°C7/27°C
20°C9/31°C
17°C9/26°C
17°C11/24°C
16°C4/28°C
19°C7/31°C
19°C10/27°C
44AQI
44AQI
48AQI
42AQI
2025 Days Vs Air Quality
Girard, Montana, United States
83%
155
15%
27
2%
3
0.5%
1
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 273 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
Girard, Montana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
25AQI
20AQI
20AQI
24AQI
20AQI
26AQI
28AQI
26AQI
18AQI
16AQI
17AQI
17AQI
17AQI
15AQI
25AQI
25AQI
20AQI
17AQI
17AQI
25AQI
15AQI
15AQI
16AQI
15AQI
18AQI
15AQI
15AQI
20AQI
19AQI
21AQI
22AQI
20AQI
16AQI
19AQI
16AQI
18AQI
18AQI
22AQI
32AQI
20AQI
25AQI
28AQI
36AQI
36AQI
31AQI
29AQI
43AQI
38AQI
18AQI
29AQI
18AQI
17AQI
17AQI
16AQI
18AQI
19AQI
16AQI
21AQI
20AQI
20AQI
21AQI
21AQI
23AQI
26AQI
86AQI
99AQI
57AQI
58AQI
46AQI
39AQI
36AQI
48AQI
57AQI
59AQI
79AQI
163AQI
141AQI
78AQI
30AQI
27AQI
26AQI
33AQI
24AQI
24AQI
28AQI
39AQI
36AQI
27AQI
32AQI
24AQI
28AQI
25AQI
24AQI
19AQI
18AQI
23AQI
39AQI
27AQI
29AQI
28AQI
31AQI
24AQI
30AQI
33AQI
36AQI
65AQI
111AQI
39AQI
27AQI
36AQI
37AQI
53AQI
37AQI
26AQI
29AQI
26AQI
49AQI
39AQI
54AQI
31AQI
33AQI
22AQI
21AQI
47AQI
89AQI
89AQI
69AQI
58AQI
59AQI
55AQI
32AQI
29AQI
31AQI
21AQI
26AQI
140AQI
62AQI
37AQI
49AQI
29AQI
27AQI
32AQI
25AQI
23AQI
33AQI
38AQI
36AQI
33AQI
33AQI
30AQI
27AQI
29AQI
33AQI
47AQI
41AQI
47AQI
35AQI
41AQI
73AQI
73AQI
66AQI
26AQI
31AQI
37AQI
51AQI
59AQI
60AQI
52AQI
46AQI
35AQI
35AQI
34AQI
38AQI
51AQI
41AQI
33AQI
34AQI
37AQI
36AQI
43AQI
37AQI
47AQI
39AQI
47AQI
60AQI
21AQI
19AQI
26AQI
47AQI
41AQI
41AQI
45AQI
No. of days
202536AQI
Highest AQI recorded in
June47AQI
Lowest AQI recorded in
April19AQI
Most & Least Polluted Years Over the Last 1 Years
Girard's annual 2025 AQI (36) shows an average percentage change of NaN% (improved AQI) compared to previous years: .