Missoula, 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
Missoula, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 49 of Good air quality on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Missoula, Montana, United States
6 AM15th Aug 2026
9 PM
5 AM16th Aug 2026
54AQI
44AQI
52AQI
36AQI
In the last 24 hours,
Missoula's AQI reached its highest point of 54 at 11 AM during the Day, while the lowest point, 36, was recorded at 3 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Missoula, Montana, United States
27°C20/35°C
25°C16/32°C
23°C16/30°C
25°C17/34°C
27°C18/34°C
28°C19/35°C
27°C16/35°C
28°C17/37°C
25°C17/33°C
24°C15/32°C
24°C14/33°C
25°C17/33°C
26°C17/34°C
26°C17/35°C
27°C18/35°C
21°C15/27°C
18°C11/25°C
20°C11/27°C
21°C12/30°C
23°C13/32°C
24°C14/34°C
25°C16/34°C
24°C15/32°C
23°C15/32°C
23°C15/32°C
23°C16/31°C
22°C17/28°C
20°C16/27°C
19°C10/29°C
19°C8/29°C
79AQI
79AQI
81AQI
81AQI
2026 Days Vs Air Quality
Missoula, Montana, United States
87%
195
9%
21
4%
8
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 228 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
Missoula, Montana, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
38AQI (US)
40AQI (US)
45AQI (US)
26AQI (US)
25AQI (US)
23AQI (US)
24AQI (US)
18AQI (US)
23AQI (US)
30AQI (US)
46AQI (US)
33AQI (US)
29AQI (US)
33AQI (US)
33AQI (US)
27AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
26AQI (US)
30AQI (US)
32AQI (US)
37AQI (US)
37AQI (US)
32AQI (US)
36AQI (US)
54AQI (US)
39AQI (US)
33AQI (US)
36AQI (US)
29AQI (US)
36AQI (US)
38AQI (US)
33AQI (US)
26AQI (US)
37AQI (US)
28AQI (US)
27AQI (US)
34AQI (US)
32AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
29AQI (US)
31AQI (US)
24AQI (US)
31AQI (US)
42AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
37AQI (US)
32AQI (US)
30AQI (US)
48AQI (US)
39AQI (US)
33AQI (US)
28AQI (US)
26AQI (US)
26AQI (US)
36AQI (US)
24AQI (US)
36AQI (US)
47AQI (US)
26AQI (US)
31AQI (US)
24AQI (US)
33AQI (US)
23AQI (US)
33AQI (US)
34AQI (US)
40AQI (US)
32AQI (US)
26AQI (US)
18AQI (US)
20AQI (US)
38AQI (US)
28AQI (US)
33AQI (US)
32AQI (US)
22AQI (US)
23AQI (US)
30AQI (US)
36AQI (US)
40AQI (US)
23AQI (US)
22AQI (US)
39AQI (US)
32AQI (US)
26AQI (US)
29AQI (US)
32AQI (US)
25AQI (US)
18AQI (US)
19AQI (US)
23AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
18AQI (US)
20AQI (US)
34AQI (US)
35AQI (US)
28AQI (US)
32AQI (US)
39AQI (US)
28AQI (US)
27AQI (US)
16AQI (US)
19AQI (US)
21AQI (US)
25AQI (US)
25AQI (US)
23AQI (US)
34AQI (US)
19AQI (US)
24AQI (US)
21AQI (US)
21AQI (US)
16AQI (US)
18AQI (US)
24AQI (US)
22AQI (US)
22AQI (US)
19AQI (US)
21AQI (US)
19AQI (US)
18AQI (US)
17AQI (US)
25AQI (US)
18AQI (US)
20AQI (US)
28AQI (US)
35AQI (US)
29AQI (US)
29AQI (US)
23AQI (US)
24AQI (US)
20AQI (US)
22AQI (US)
22AQI (US)
18AQI (US)
15AQI (US)
28AQI (US)
44AQI (US)
18AQI (US)
28AQI (US)
18AQI (US)
22AQI (US)
23AQI (US)
30AQI (US)
34AQI (US)
25AQI (US)
13AQI (US)
14AQI (US)
19AQI (US)
20AQI (US)
18AQI (US)
16AQI (US)
19AQI (US)
19AQI (US)
17AQI (US)
19AQI (US)
34AQI (US)
22AQI (US)
19AQI (US)
17AQI (US)
21AQI (US)
20AQI (US)
17AQI (US)
20AQI (US)
22AQI (US)
18AQI (US)
16AQI (US)
17AQI (US)
20AQI (US)
53AQI (US)
103AQI (US)
36AQI (US)
21AQI (US)
15AQI (US)
19AQI (US)
23AQI (US)
15AQI (US)
18AQI (US)
25AQI (US)
38AQI (US)
26AQI (US)
15AQI (US)
22AQI (US)
28AQI (US)
30AQI (US)
38AQI (US)
37AQI (US)
44AQI (US)
60AQI (US)
54AQI (US)
47AQI (US)
51AQI (US)
62AQI (US)
72AQI (US)
56AQI (US)
66AQI (US)
105AQI (US)
99AQI (US)
84AQI (US)
84AQI (US)
83AQI (US)
70AQI (US)
76AQI (US)
69AQI (US)
128AQI (US)
78AQI (US)
71AQI (US)
103AQI (US)
118AQI (US)
90AQI (US)
112AQI (US)
140AQI (US)
123AQI (US)
94AQI (US)
54AQI (US)
44AQI (US)
49AQI (US)
33AQI (US)
31AQI (US)
30AQI (US)
25AQI (US)
23AQI (US)
24AQI (US)
47AQI (US)
90AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
August90AQI (US)
Lowest AQI (US) recorded in
May23AQI (US)
202531AQI (US)
Highest AQI (US) recorded in
September44AQI (US)
Lowest AQI (US) recorded in
May18AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
January45AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202335AQI (US)
Highest AQI (US) recorded in
December47AQI (US)
Lowest AQI (US) recorded in
September22AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
September63AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202144AQI (US)
Highest AQI (US) recorded in
July79AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202042AQI (US)
Highest AQI (US) recorded in
September65AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Missoula's annual 2026 AQI (US) (34) shows an average percentage change of -7.2% (improved AQI (US)) compared to previous years: 2020 (42), 2021 (44), 2022 (40), 2023 (35), 2024 (32), 2025 (31).