Columbia Falls, Montana, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Columbia Falls, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (21st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 23 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Aug - 21st Aug 2025
Columbia Falls, Montana, United States
6 AM20th Aug 2025
9 PM
5 AM21st Aug 2025
58AQI
20AQI
25AQI
18AQI
In the last 24 hours,
Columbia Falls's AQI reached its highest point of 58 at 2 PM during the Day, while the lowest point, 18, was recorded at 11 PM during the Night between 20th Aug and 21st Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Columbia Falls, Montana, United States
--°C/°C
16°C7/24°C
21°C11/29°C
23°C14/30°C
22°C14/29°C
22°C15/28°C
22°C15/29°C
22°C13/31°C
23°C14/31°C
24°C15/32°C
22°C15/29°C
19°C14/22°C
20°C13/27°C
21°C14/27°C
19°C12/25°C
19°C12/26°C
17°C13/20°C
16°C9/22°C
19°C10/25°C
23°C16/29°C
23°C18/27°C
25°C17/32°C
25°C17/32°C
21°C16/27°C
20°C14/25°C
20°C15/25°C
18°C11/25°C
20°C11/29°C
23°C13/31°C
23°C17/29°C
20°C13/28°C
40AQI
27AQI
29AQI
24AQI
2025 Days Vs Air Quality
Columbia Falls, Montana, United States
92%
214
8%
19
Total number of days with different AQI categories in last 234 days in 2025 (131 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 234 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
Columbia Falls, Montana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI
41AQI
35AQI
37AQI
50AQI
36AQI
31AQI
33AQI
41AQI
54AQI
27AQI
35AQI
49AQI
56AQI
60AQI
60AQI
24AQI
27AQI
34AQI
35AQI
62AQI
53AQI
57AQI
49AQI
52AQI
43AQI
51AQI
52AQI
58AQI
63AQI
71AQI
29AQI
40AQI
31AQI
28AQI
30AQI
50AQI
31AQI
39AQI
46AQI
34AQI
32AQI
34AQI
46AQI
40AQI
37AQI
33AQI
27AQI
25AQI
25AQI
48AQI
30AQI
31AQI
19AQI
19AQI
20AQI
21AQI
33AQI
49AQI
42AQI
34AQI
38AQI
24AQI
22AQI
23AQI
22AQI
24AQI
31AQI
17AQI
20AQI
20AQI
18AQI
19AQI
18AQI
16AQI
20AQI
24AQI
27AQI
23AQI
17AQI
16AQI
17AQI
17AQI
20AQI
26AQI
22AQI
17AQI
17AQI
19AQI
18AQI
18AQI
20AQI
18AQI
25AQI
29AQI
36AQI
27AQI
12AQI
13AQI
30AQI
29AQI
18AQI
15AQI
33AQI
30AQI
24AQI
21AQI
18AQI
36AQI
17AQI
13AQI
21AQI
17AQI
23AQI
24AQI
22AQI
34AQI
22AQI
18AQI
19AQI
28AQI
28AQI
43AQI
18AQI
21AQI
22AQI
25AQI
22AQI
28AQI
31AQI
20AQI
19AQI
24AQI
21AQI
17AQI
16AQI
14AQI
15AQI
14AQI
18AQI
14AQI
16AQI
19AQI
17AQI
19AQI
22AQI
22AQI
18AQI
20AQI
22AQI
30AQI
21AQI
19AQI
19AQI
23AQI
27AQI
30AQI
29AQI
57AQI
51AQI
33AQI
45AQI
61AQI
27AQI
24AQI
26AQI
33AQI
33AQI
31AQI
24AQI
23AQI
20AQI
21AQI
26AQI
37AQI
38AQI
31AQI
24AQI
20AQI
20AQI
23AQI
28AQI
31AQI
26AQI
22AQI
35AQI
28AQI
25AQI
25AQI
28AQI
19AQI
22AQI
28AQI
23AQI
32AQI
29AQI
51AQI
39AQI
28AQI
30AQI
35AQI
22AQI
20AQI
25AQI
31AQI
26AQI
21AQI
21AQI
24AQI
24AQI
26AQI
31AQI
35AQI
36AQI
36AQI
39AQI
41AQI
36AQI
25AQI
19AQI
25AQI
31AQI
27AQI
32AQI
44AQI
56AQI
54AQI
25AQI
25AQI
22AQI
35AQI
33AQI
23AQI
46AQI
33AQI
22AQI
23AQI
21AQI
30AQI
28AQI
33AQI
No. of days
202529AQI
Highest AQI recorded in
January46AQI
Lowest AQI recorded in
May21AQI
202432AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
May20AQI
202336AQI
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
September24AQI
202233AQI
Highest AQI recorded in
September59AQI
Lowest AQI recorded in
May17AQI
202131AQI
Highest AQI recorded in
July64AQI
Lowest AQI recorded in
May18AQI
202028AQI
Highest AQI recorded in
September56AQI
Lowest AQI recorded in
June12AQI
Most & Least Polluted Years Over the Last 6 Years
Columbia Falls's annual 2025 AQI (29) shows an average percentage change of -7.6% (improved AQI) compared to previous years: 2020 (28), 2021 (31), 2022 (33), 2023 (36), 2024 (32).