Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Hamilton, Montana, United States Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Hamilton, Montana, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
8th Aug 2026
124AQI
Lowest AQI recorded on
11th Aug 2023
12AQI

Same Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 59 of Moderate air quality on the same day.

Day & Night AQI Trend: 13th Aug - 14th Aug 2026

Hamilton, Montana, United States

AQI
Day
Night
.

6 AM13th Aug 2026

9 PM

5 AM14th Aug 2026

Day time
Avg. Highest Time
3PM13th Aug

67AQI

Avg. Lowest Time
8AM13th Aug

42AQI

Night time
Avg. Highest Time
9PM13th Aug

62AQI

Avg. Lowest Time
4AM14th Aug

33AQI

In the last 24 hours,

Hamilton's AQI reached its highest point of 67 at 3 PM during the Day, while the lowest point, 33, was recorded at 4 AM during the Night between 13th Aug and 14th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Hamilton, Montana, United States

JulAug
16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th
Day
Night
16th Jul 2026516 AMAQI
16th Jul 2026297 AMAQI
16th Jul 2026468 AMAQI
16th Jul 2026449 AMAQI
16th Jul 20263210 AMAQI
16th Jul 20264411 AMAQI
16th Jul 20263212 PMAQI
16th Jul 2026521 PMAQI
16th Jul 2026482 PMAQI
16th Jul 2026463 PMAQI
16th Jul 2026294 PMAQI
16th Jul 2026325 PMAQI
16th Jul 2026386 PMAQI
16th Jul 2026287 PMAQI
16th Jul 2026268 PMAQI
16th Jul 2026409 PMAQI
16th Jul 20262910 PMAQI
16th Jul 20264911 PMAQI
17th Jul 20264912 AMAQI
17th Jul 2026421 AMAQI
17th Jul 2026422 AMAQI
17th Jul 2026433 AMAQI
17th Jul 2026424 AMAQI
17th Jul 2026465 AMAQI

26°C14/35°C

17th Jul 2026486 AMAQI
17th Jul 2026497 AMAQI
17th Jul 2026388 AMAQI
17th Jul 2026509 AMAQI
17th Jul 20264810 AMAQI
17th Jul 20264811 AMAQI
17th Jul 20265112 PMAQI
17th Jul 2026521 PMAQI
17th Jul 2026482 PMAQI
17th Jul 2026573 PMAQI
17th Jul 2026524 PMAQI
17th Jul 2026565 PMAQI
17th Jul 2026646 PMAQI
17th Jul 2026547 PMAQI
17th Jul 2026628 PMAQI
17th Jul 2026569 PMAQI
17th Jul 20265910 PMAQI
17th Jul 20265911 PMAQI
18th Jul 20265812 AMAQI
18th Jul 2026581 AMAQI
18th Jul 2026582 AMAQI
18th Jul 2026563 AMAQI
18th Jul 2026584 AMAQI
18th Jul 2026555 AMAQI

26°C19/36°C

18th Jul 2026596 AMAQI
18th Jul 2026547 AMAQI
18th Jul 2026568 AMAQI
18th Jul 2026609 AMAQI
18th Jul 20266610 AMAQI
18th Jul 20267211 AMAQI
18th Jul 20267112 PMAQI
18th Jul 2026721 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026593 PMAQI
18th Jul 2026684 PMAQI
18th Jul 2026565 PMAQI
18th Jul 2026636 PMAQI
18th Jul 2026427 PMAQI
18th Jul 2026428 PMAQI
18th Jul 2026539 PMAQI
18th Jul 20265210 PMAQI
18th Jul 20264011 PMAQI
19th Jul 20265112 AMAQI
19th Jul 2026551 AMAQI
19th Jul 2026532 AMAQI
19th Jul 2026523 AMAQI
19th Jul 2026464 AMAQI
19th Jul 2026515 AMAQI

26°C17/35°C

19th Jul 2026446 AMAQI
19th Jul 2026507 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026579 AMAQI
19th Jul 20265910 AMAQI
19th Jul 20266411 AMAQI
19th Jul 20265712 PMAQI
19th Jul 2026571 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026543 PMAQI
19th Jul 2026644 PMAQI
19th Jul 2026605 PMAQI
19th Jul 2026566 PMAQI
19th Jul 2026577 PMAQI
19th Jul 2026558 PMAQI
19th Jul 2026489 PMAQI
19th Jul 20265410 PMAQI
19th Jul 20264611 PMAQI
20th Jul 20265012 AMAQI
20th Jul 2026521 AMAQI
20th Jul 2026422 AMAQI
20th Jul 2026463 AMAQI
20th Jul 2026444 AMAQI
20th Jul 2026465 AMAQI

24°C14/33°C

20th Jul 2026466 AMAQI
20th Jul 2026487 AMAQI
20th Jul 2026408 AMAQI
20th Jul 2026449 AMAQI
20th Jul 20265110 AMAQI
20th Jul 20265211 AMAQI
20th Jul 20265112 PMAQI
20th Jul 2026441 PMAQI
20th Jul 2026462 PMAQI
20th Jul 2026553 PMAQI
20th Jul 2026504 PMAQI
20th Jul 2026545 PMAQI
20th Jul 2026446 PMAQI
20th Jul 2026537 PMAQI
20th Jul 2026528 PMAQI
20th Jul 20265510 PMAQI
20th Jul 20264811 PMAQI
21st Jul 20265112 AMAQI
21st Jul 2026481 AMAQI
21st Jul 2026502 AMAQI
21st Jul 2026543 AMAQI
21st Jul 2026444 AMAQI
21st Jul 2026565 AMAQI

23°C15/31°C

21st Jul 2026426 AMAQI
21st Jul 2026447 AMAQI
21st Jul 2026428 AMAQI
21st Jul 2026429 AMAQI
21st Jul 20264210 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20264612 PMAQI
21st Jul 2026461 PMAQI
21st Jul 2026422 PMAQI
21st Jul 2026523 PMAQI
21st Jul 2026534 PMAQI
21st Jul 2026445 PMAQI
21st Jul 2026536 PMAQI
21st Jul 2026627 PMAQI
21st Jul 2026648 PMAQI
21st Jul 2026649 PMAQI
21st Jul 20266410 PMAQI
21st Jul 20266411 PMAQI
22nd Jul 20266712 AMAQI
22nd Jul 2026721 AMAQI
22nd Jul 2026622 AMAQI
22nd Jul 2026553 AMAQI
22nd Jul 2026564 AMAQI
22nd Jul 2026595 AMAQI

24°C14/34°C

22nd Jul 2026576 AMAQI
22nd Jul 2026607 AMAQI
22nd Jul 2026578 AMAQI
22nd Jul 2026629 AMAQI
22nd Jul 20266210 AMAQI
22nd Jul 20265911 AMAQI
22nd Jul 20266512 PMAQI
22nd Jul 2026641 PMAQI
22nd Jul 2026662 PMAQI
22nd Jul 2026673 PMAQI
22nd Jul 2026684 PMAQI
22nd Jul 2026665 PMAQI
22nd Jul 2026676 PMAQI
22nd Jul 2026657 PMAQI
22nd Jul 2026678 PMAQI
22nd Jul 2026669 PMAQI
22nd Jul 20266610 PMAQI
22nd Jul 20266211 PMAQI
23rd Jul 20265812 AMAQI
23rd Jul 2026571 AMAQI
23rd Jul 2026562 AMAQI
23rd Jul 2026583 AMAQI
23rd Jul 2026594 AMAQI
23rd Jul 2026465 AMAQI

26°C17/34°C

23rd Jul 2026726 AMAQI
23rd Jul 2026737 AMAQI
23rd Jul 2026738 AMAQI
23rd Jul 2026509 AMAQI
23rd Jul 20265210 AMAQI
23rd Jul 20265411 AMAQI
23rd Jul 20265112 PMAQI
23rd Jul 2026561 PMAQI
23rd Jul 2026702 PMAQI
23rd Jul 2026793 PMAQI
23rd Jul 2026864 PMAQI
23rd Jul 2026895 PMAQI
23rd Jul 2026766 PMAQI
23rd Jul 2026967 PMAQI
23rd Jul 2026938 PMAQI
23rd Jul 2026839 PMAQI
23rd Jul 20268610 PMAQI
23rd Jul 20267011 PMAQI
24th Jul 20265812 AMAQI
24th Jul 2026581 AMAQI
24th Jul 2026562 AMAQI
24th Jul 2026533 AMAQI
24th Jul 2026584 AMAQI
24th Jul 2026565 AMAQI

27°C18/36°C

24th Jul 2026586 AMAQI
24th Jul 2026537 AMAQI
24th Jul 2026518 AMAQI
24th Jul 2026469 AMAQI
24th Jul 20265110 AMAQI
24th Jul 20265211 AMAQI
24th Jul 20265112 PMAQI
24th Jul 2026601 PMAQI
24th Jul 2026702 PMAQI
24th Jul 2026673 PMAQI
24th Jul 2026664 PMAQI
24th Jul 2026715 PMAQI
24th Jul 2026446 PMAQI
24th Jul 2026637 PMAQI
24th Jul 2026658 PMAQI
24th Jul 2026659 PMAQI
24th Jul 20266010 PMAQI
24th Jul 20264811 PMAQI
25th Jul 20264812 AMAQI
25th Jul 2026461 AMAQI
25th Jul 2026482 AMAQI
25th Jul 2026523 AMAQI
25th Jul 2026564 AMAQI
25th Jul 2026535 AMAQI

27°C15/36°C

25th Jul 2026536 AMAQI
25th Jul 2026557 AMAQI
25th Jul 2026538 AMAQI
25th Jul 2026499 AMAQI
25th Jul 20265410 AMAQI
25th Jul 20265211 AMAQI
25th Jul 20265612 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026512 PMAQI
25th Jul 2026533 PMAQI
25th Jul 2026484 PMAQI
25th Jul 2026685 PMAQI
25th Jul 2026746 PMAQI
25th Jul 2026887 PMAQI
25th Jul 2026758 PMAQI
25th Jul 2026599 PMAQI
25th Jul 20265810 PMAQI
25th Jul 20266711 PMAQI
26th Jul 20266612 AMAQI
26th Jul 2026841 AMAQI
26th Jul 2026922 AMAQI
26th Jul 20261013 AMAQI
26th Jul 20261004 AMAQI
26th Jul 2026985 AMAQI

27°C15/38°C

26th Jul 2026986 AMAQI
26th Jul 20261007 AMAQI
26th Jul 20261068 AMAQI
26th Jul 20261029 AMAQI
26th Jul 20269610 AMAQI
26th Jul 20269211 AMAQI
26th Jul 20269312 PMAQI
26th Jul 2026961 PMAQI
26th Jul 20261042 PMAQI
26th Jul 20261113 PMAQI
26th Jul 20261074 PMAQI
26th Jul 20261155 PMAQI
26th Jul 20261186 PMAQI
26th Jul 20261037 PMAQI
26th Jul 20261108 PMAQI
26th Jul 20261139 PMAQI
26th Jul 202611610 PMAQI
26th Jul 202611311 PMAQI
27th Jul 202611712 AMAQI
27th Jul 20261081 AMAQI
27th Jul 20261062 AMAQI
27th Jul 2026983 AMAQI
27th Jul 20261044 AMAQI
27th Jul 20261065 AMAQI

25°C15/33°C

27th Jul 20261046 AMAQI
27th Jul 20261027 AMAQI
27th Jul 20261008 AMAQI
27th Jul 20261009 AMAQI
27th Jul 202610510 AMAQI
27th Jul 202610811 AMAQI
27th Jul 202610412 PMAQI
27th Jul 20261001 PMAQI
27th Jul 20261052 PMAQI
27th Jul 20261103 PMAQI
27th Jul 20261204 PMAQI
27th Jul 20261345 PMAQI
27th Jul 20261346 PMAQI
27th Jul 20261317 PMAQI
27th Jul 20261288 PMAQI
27th Jul 20261219 PMAQI
27th Jul 202611110 PMAQI
27th Jul 202611911 PMAQI
28th Jul 202611612 AMAQI
28th Jul 20261141 AMAQI
28th Jul 20261192 AMAQI
28th Jul 20261143 AMAQI
28th Jul 2026954 AMAQI
28th Jul 2026985 AMAQI

24°C15/32°C

28th Jul 2026956 AMAQI
28th Jul 2026967 AMAQI
28th Jul 2026918 AMAQI
28th Jul 2026989 AMAQI
28th Jul 202610210 AMAQI
28th Jul 202610011 AMAQI
28th Jul 202610612 PMAQI
28th Jul 20261081 PMAQI
28th Jul 20261022 PMAQI
28th Jul 20261023 PMAQI
28th Jul 2026984 PMAQI
28th Jul 20261045 PMAQI
28th Jul 2026986 PMAQI
28th Jul 20261007 PMAQI
28th Jul 2026988 PMAQI
28th Jul 2026989 PMAQI
28th Jul 202610110 PMAQI
28th Jul 202610511 PMAQI
29th Jul 202610412 AMAQI
29th Jul 20261061 AMAQI
29th Jul 2026972 AMAQI
29th Jul 2026983 AMAQI
29th Jul 2026924 AMAQI
29th Jul 2026885 AMAQI

24°C14/33°C

29th Jul 2026846 AMAQI
29th Jul 2026867 AMAQI
29th Jul 2026938 AMAQI
29th Jul 20261009 AMAQI
29th Jul 20269610 AMAQI
29th Jul 20269411 AMAQI
29th Jul 20269812 PMAQI
29th Jul 20261001 PMAQI
29th Jul 2026972 PMAQI
29th Jul 2026953 PMAQI
29th Jul 2026914 PMAQI
29th Jul 2026885 PMAQI
29th Jul 2026886 PMAQI
29th Jul 2026787 PMAQI
29th Jul 2026788 PMAQI
29th Jul 2026799 PMAQI
29th Jul 20268510 PMAQI
29th Jul 202610811 PMAQI
30th Jul 202611412 AMAQI
30th Jul 20261081 AMAQI
30th Jul 20261032 AMAQI
30th Jul 20261043 AMAQI
30th Jul 2026994 AMAQI
30th Jul 20261005 AMAQI

24°C15/33°C

30th Jul 2026946 AMAQI
30th Jul 2026847 AMAQI
30th Jul 2026918 AMAQI
30th Jul 2026909 AMAQI
30th Jul 20268410 AMAQI
30th Jul 20268411 AMAQI
30th Jul 20268412 PMAQI
30th Jul 2026831 PMAQI
30th Jul 2026822 PMAQI
30th Jul 2026763 PMAQI
30th Jul 2026774 PMAQI
30th Jul 2026815 PMAQI
30th Jul 2026786 PMAQI
30th Jul 20261077 PMAQI
30th Jul 2026948 PMAQI
30th Jul 2026849 PMAQI
30th Jul 20267010 PMAQI
30th Jul 20266211 PMAQI
31st Jul 20266012 AMAQI
31st Jul 2026661 AMAQI
31st Jul 2026672 AMAQI
31st Jul 2026663 AMAQI
31st Jul 2026694 AMAQI
31st Jul 2026705 AMAQI

25°C15/34°C

31st Jul 2026726 AMAQI
31st Jul 2026727 AMAQI
31st Jul 2026708 AMAQI
31st Jul 2026719 AMAQI
31st Jul 20267410 AMAQI
31st Jul 20267011 AMAQI
31st Jul 20267012 PMAQI
31st Jul 2026731 PMAQI
31st Jul 2026702 PMAQI
31st Jul 2026713 PMAQI
31st Jul 2026724 PMAQI
31st Jul 2026725 PMAQI
31st Jul 2026716 PMAQI
31st Jul 2026727 PMAQI
31st Jul 2026848 PMAQI
31st Jul 2026879 PMAQI
31st Jul 20268010 PMAQI
31st Jul 20267611 PMAQI
1st Aug 20267812 AMAQI
1st Aug 2026711 AMAQI
1st Aug 2026752 AMAQI
1st Aug 2026743 AMAQI
1st Aug 2026744 AMAQI
1st Aug 2026755 AMAQI

25°C15/35°C

1st Aug 2026766 AMAQI
1st Aug 2026767 AMAQI
1st Aug 2026708 AMAQI
1st Aug 2026699 AMAQI
1st Aug 20267010 AMAQI
1st Aug 20267711 AMAQI
1st Aug 20267212 PMAQI
1st Aug 2026681 PMAQI
1st Aug 2026692 PMAQI
1st Aug 2026663 PMAQI
1st Aug 2026764 PMAQI
1st Aug 2026745 PMAQI
1st Aug 2026936 PMAQI
1st Aug 20261147 PMAQI
1st Aug 20261108 PMAQI
1st Aug 20261079 PMAQI
1st Aug 202611010 PMAQI
1st Aug 20268811 PMAQI
2nd Aug 20267912 AMAQI
2nd Aug 2026761 AMAQI
2nd Aug 2026802 AMAQI
2nd Aug 2026803 AMAQI
2nd Aug 2026754 AMAQI
2nd Aug 2026745 AMAQI

26°C16/36°C

2nd Aug 2026746 AMAQI
2nd Aug 2026687 AMAQI
2nd Aug 2026718 AMAQI
2nd Aug 2026729 AMAQI
2nd Aug 20267110 AMAQI
2nd Aug 20266511 AMAQI
2nd Aug 20266212 PMAQI
2nd Aug 2026551 PMAQI
2nd Aug 2026592 PMAQI
2nd Aug 2026683 PMAQI
2nd Aug 2026704 PMAQI
2nd Aug 2026665 PMAQI
2nd Aug 2026596 PMAQI
2nd Aug 2026537 PMAQI
2nd Aug 2026588 PMAQI
2nd Aug 2026559 PMAQI
2nd Aug 202611010 PMAQI
2nd Aug 20268911 PMAQI
3rd Aug 202614112 AMAQI
3rd Aug 20261521 AMAQI
3rd Aug 2026862 AMAQI
3rd Aug 20261303 AMAQI
3rd Aug 20261214 AMAQI
3rd Aug 20261045 AMAQI

21°C14/27°C

3rd Aug 2026986 AMAQI
3rd Aug 2026997 AMAQI
3rd Aug 20261148 AMAQI
3rd Aug 20261229 AMAQI
3rd Aug 202611910 AMAQI
3rd Aug 202611211 AMAQI
3rd Aug 202611012 PMAQI
3rd Aug 20261051 PMAQI
3rd Aug 20261052 PMAQI
3rd Aug 20261003 PMAQI
3rd Aug 20261004 PMAQI
3rd Aug 20261005 PMAQI
3rd Aug 2026916 PMAQI
3rd Aug 2026927 PMAQI
3rd Aug 2026968 PMAQI
3rd Aug 2026969 PMAQI
3rd Aug 20269610 PMAQI
3rd Aug 202610111 PMAQI
4th Aug 20269812 AMAQI
4th Aug 2026961 AMAQI
4th Aug 2026942 AMAQI
4th Aug 2026913 AMAQI
4th Aug 2026924 AMAQI
4th Aug 2026865 AMAQI

18°C11/25°C

4th Aug 2026846 AMAQI
4th Aug 2026907 AMAQI
4th Aug 2026838 AMAQI
4th Aug 2026889 AMAQI
4th Aug 20269110 AMAQI
4th Aug 20268611 AMAQI
4th Aug 20269612 PMAQI
4th Aug 2026901 PMAQI
4th Aug 2026852 PMAQI
4th Aug 2026803 PMAQI
4th Aug 2026704 PMAQI
4th Aug 2026745 PMAQI
4th Aug 2026746 PMAQI
4th Aug 2026717 PMAQI
4th Aug 2026688 PMAQI
4th Aug 2026699 PMAQI
4th Aug 20266510 PMAQI
4th Aug 20266411 PMAQI
5th Aug 20266712 AMAQI
5th Aug 2026711 AMAQI
5th Aug 2026742 AMAQI
5th Aug 2026803 AMAQI
5th Aug 2026784 AMAQI
5th Aug 2026785 AMAQI

18°C9/27°C

5th Aug 2026786 AMAQI
5th Aug 2026757 AMAQI
5th Aug 2026818 AMAQI
5th Aug 2026849 AMAQI
5th Aug 20267710 AMAQI
5th Aug 20268611 AMAQI
5th Aug 20268412 PMAQI
5th Aug 2026881 PMAQI
5th Aug 2026862 PMAQI
5th Aug 2026883 PMAQI
5th Aug 2026824 PMAQI
5th Aug 2026895 PMAQI
5th Aug 2026866 PMAQI
5th Aug 2026847 PMAQI
5th Aug 2026778 PMAQI
5th Aug 2026789 PMAQI
5th Aug 20267610 PMAQI
5th Aug 20268211 PMAQI
6th Aug 20268412 AMAQI
6th Aug 20261001 AMAQI
6th Aug 20261042 AMAQI
6th Aug 20261153 AMAQI
6th Aug 20261084 AMAQI
6th Aug 20261045 AMAQI

20°C9/30°C

6th Aug 2026966 AMAQI
6th Aug 2026917 AMAQI
6th Aug 20261008 AMAQI
6th Aug 2026949 AMAQI
6th Aug 20268910 AMAQI
6th Aug 20268411 AMAQI
6th Aug 20268812 PMAQI
6th Aug 2026981 PMAQI
6th Aug 2026942 PMAQI
6th Aug 20261003 PMAQI
6th Aug 2026994 PMAQI
6th Aug 2026965 PMAQI
6th Aug 2026876 PMAQI
6th Aug 2026847 PMAQI
6th Aug 2026748 PMAQI
6th Aug 2026809 PMAQI
6th Aug 20268110 PMAQI
6th Aug 20268411 PMAQI
7th Aug 20269012 AMAQI
7th Aug 2026861 AMAQI
7th Aug 2026942 AMAQI
7th Aug 2026963 AMAQI
7th Aug 20261004 AMAQI
7th Aug 20261015 AMAQI

22°C10/33°C

7th Aug 20261006 AMAQI
7th Aug 2026997 AMAQI
7th Aug 2026948 AMAQI
7th Aug 2026999 AMAQI
7th Aug 202610610 AMAQI
7th Aug 202610511 AMAQI
7th Aug 202610812 PMAQI
7th Aug 20261091 PMAQI
7th Aug 20261122 PMAQI
7th Aug 20261173 PMAQI
7th Aug 20261184 PMAQI
7th Aug 20261165 PMAQI
7th Aug 20261146 PMAQI
7th Aug 20261267 PMAQI
7th Aug 20261328 PMAQI
7th Aug 20261309 PMAQI
7th Aug 202612910 PMAQI
7th Aug 202611711 PMAQI
8th Aug 202612612 AMAQI
8th Aug 20261361 AMAQI
8th Aug 20261292 AMAQI
8th Aug 20261323 AMAQI
8th Aug 20261234 AMAQI
8th Aug 20261195 AMAQI

22°C11/34°C

8th Aug 20261126 AMAQI
8th Aug 20261277 AMAQI
8th Aug 20261188 AMAQI
8th Aug 20261279 AMAQI
8th Aug 202612010 AMAQI
8th Aug 202612611 AMAQI
8th Aug 202613212 PMAQI
8th Aug 20261401 PMAQI
8th Aug 20261352 PMAQI
8th Aug 20261373 PMAQI
8th Aug 20261384 PMAQI
8th Aug 20261125 PMAQI
8th Aug 20261026 PMAQI
8th Aug 20261207 PMAQI
8th Aug 20261258 PMAQI
8th Aug 20261279 PMAQI
8th Aug 202612110 PMAQI
8th Aug 202610311 PMAQI
9th Aug 20269612 AMAQI
9th Aug 2026941 AMAQI
9th Aug 2026982 AMAQI
9th Aug 20261033 AMAQI
9th Aug 20261134 AMAQI
9th Aug 20261115 AMAQI

23°C13/34°C

9th Aug 20261096 AMAQI
9th Aug 20261107 AMAQI
9th Aug 20261038 AMAQI
9th Aug 20261009 AMAQI
9th Aug 202610610 AMAQI
9th Aug 20269811 AMAQI
9th Aug 202610712 PMAQI
9th Aug 2026991 PMAQI
9th Aug 20261312 PMAQI
9th Aug 20261323 PMAQI
9th Aug 20261324 PMAQI
9th Aug 20261155 PMAQI
9th Aug 20261016 PMAQI
9th Aug 2026937 PMAQI
9th Aug 2026798 PMAQI
9th Aug 2026729 PMAQI
9th Aug 20267210 PMAQI
9th Aug 20267911 PMAQI
10th Aug 20268112 AMAQI
10th Aug 2026801 AMAQI
10th Aug 2026832 AMAQI
10th Aug 2026873 AMAQI
10th Aug 2026844 AMAQI
10th Aug 2026825 AMAQI

22°C12/32°C

10th Aug 2026866 AMAQI
10th Aug 2026857 AMAQI
10th Aug 2026868 AMAQI
10th Aug 2026909 AMAQI
10th Aug 20269210 AMAQI
10th Aug 202610911 AMAQI
10th Aug 202615212 PMAQI
10th Aug 20261521 PMAQI
10th Aug 20261622 PMAQI
10th Aug 20261563 PMAQI
10th Aug 20261504 PMAQI
10th Aug 20261305 PMAQI
10th Aug 20261146 PMAQI
10th Aug 20261007 PMAQI
10th Aug 20261108 PMAQI
10th Aug 20261159 PMAQI
10th Aug 202612810 PMAQI
10th Aug 202611811 PMAQI
11th Aug 202611712 AMAQI
11th Aug 20261101 AMAQI
11th Aug 20261122 AMAQI
11th Aug 20261123 AMAQI
11th Aug 20261124 AMAQI
11th Aug 20261105 AMAQI

22°C12/32°C

11th Aug 20261146 AMAQI
11th Aug 20261127 AMAQI
11th Aug 20261118 AMAQI
11th Aug 20261139 AMAQI
11th Aug 202612210 AMAQI
11th Aug 202611011 AMAQI
11th Aug 202612612 PMAQI
11th Aug 20261521 PMAQI
11th Aug 20261582 PMAQI
11th Aug 20261543 PMAQI
11th Aug 20261364 PMAQI
11th Aug 20261215 PMAQI
11th Aug 20261006 PMAQI
11th Aug 20261007 PMAQI
11th Aug 2026808 PMAQI
11th Aug 2026739 PMAQI
11th Aug 20268110 PMAQI
11th Aug 20268211 PMAQI
12th Aug 20268812 AMAQI
12th Aug 2026861 AMAQI
12th Aug 2026922 AMAQI
12th Aug 2026883 AMAQI
12th Aug 2026884 AMAQI
12th Aug 2026835 AMAQI

22°C11/31°C

12th Aug 2026846 AMAQI
12th Aug 2026837 AMAQI
12th Aug 2026838 AMAQI
12th Aug 2026809 AMAQI
12th Aug 20268210 AMAQI
12th Aug 20268411 AMAQI
12th Aug 202611012 PMAQI
12th Aug 20261171 PMAQI
12th Aug 20261202 PMAQI
12th Aug 20261013 PMAQI
12th Aug 2026934 PMAQI
12th Aug 2026935 PMAQI
12th Aug 2026926 PMAQI
12th Aug 2026827 PMAQI
12th Aug 2026788 PMAQI
12th Aug 2026779 PMAQI
12th Aug 20268010 PMAQI
12th Aug 20267011 PMAQI
13th Aug 20267412 AMAQI
13th Aug 2026781 AMAQI
13th Aug 2026792 AMAQI
13th Aug 2026703 AMAQI
13th Aug 2026584 AMAQI
13th Aug 2026585 AMAQI

22°C12/31°C

13th Aug 2026596 AMAQI
13th Aug 2026537 AMAQI
13th Aug 2026428 AMAQI
13th Aug 2026489 AMAQI
13th Aug 20264410 AMAQI
13th Aug 20265111 AMAQI
13th Aug 20265012 PMAQI
13th Aug 2026541 PMAQI
13th Aug 2026582 PMAQI
13th Aug 2026673 PMAQI
13th Aug 2026624 PMAQI
13th Aug 2026625 PMAQI
13th Aug 2026626 PMAQI
13th Aug 2026577 PMAQI
13th Aug 2026468 PMAQI
13th Aug 2026629 PMAQI
13th Aug 20266110 PMAQI
13th Aug 20265911 PMAQI
14th Aug 20265512 AMAQI
14th Aug 2026521 AMAQI
14th Aug 2026462 AMAQI
14th Aug 2026423 AMAQI
14th Aug 2026334 AMAQI
14th Aug 2026505 AMAQI

21°C14/29°C

14th Aug 2026526 AMAQI
6 AM
14th Aug 2026577 AMAQI
14th Aug 2026368 AMAQI
14th Aug 2026399 AMAQI
14th Aug 20263910 AMAQI
14th Aug 20264311 AMAQI
14th Aug 20263812 PMAQI
14th Aug 2026381 PMAQI
1 PM
14th Aug 2026532 PMAQI
14th Aug 2026573 PMAQI
14th Aug 2026444 PMAQI
14th Aug 2026465 PMAQI
14th Aug 2026516 PMAQI
14th Aug 2026467 PMAQI
14th Aug 2026468 PMAQI
14th Aug 2026489 PMAQI
9 PM
14th Aug 20265210 PMAQI
14th Aug 20264211 PMAQI
1 AM
5 AM

20°C14/27°C

Day time
Avg. Highest Time
12 PM - 5 PM

84AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
6 AM - 11 AM

77AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 5 PM (Avg. 84), while the lowest AQI was between 6 AM to 11 AM (Avg. 77).
Night time
Avg. Highest Time
12 AM - 10 PM

79AQI

7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM

78AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 10 PM (Avg. 79), while the lowest AQI was between 12 AM to 11 PM (Avg. 78).

2026 Days Vs Air Quality

Hamilton, Montana, United States

2026

86%

190

10%

22

5%

10

Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)

Good
190 Days
Moderate
22 Days
Poor
10 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2026, 86% of 226 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

Hamilton, Montana, United States

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
54AQI (US)
2nd January 2026
77AQI (US)
3rd January 2026
71AQI (US)
4th January 2026
34AQI (US)
5th January 2026
30AQI (US)
6th January 2026
20AQI (US)
7th January 2026
11AQI (US)
8th January 2026
26AQI (US)
9th January 2026
36AQI (US)
10th January 2026
27AQI (US)
11th January 2026
39AQI (US)
12th January 2026
45AQI (US)
13th January 2026
47AQI (US)
14th January 2026
43AQI (US)
15th January 2026
44AQI (US)
16th January 2026
31AQI (US)
17th January 2026
30AQI (US)
18th January 2026
35AQI (US)
19th January 2026
36AQI (US)
20th January 2026
34AQI (US)
21st January 2026
34AQI (US)
22nd January 2026
35AQI (US)
23rd January 2026
38AQI (US)
24th January 2026
37AQI (US)
25th January 2026
34AQI (US)
26th January 2026
38AQI (US)
27th January 2026
53AQI (US)
28th January 2026
42AQI (US)
29th January 2026
33AQI (US)
30th January 2026
37AQI (US)
31st January 2026
27AQI (US)
1st February 2026
33AQI (US)
2nd February 2026
30AQI (US)
3rd February 2026
28AQI (US)
4th February 2026
32AQI (US)
5th February 2026
38AQI (US)
6th February 2026
28AQI (US)
7th February 2026
28AQI (US)
8th February 2026
38AQI (US)
9th February 2026
42AQI (US)
10th February 2026
26AQI (US)
11th February 2026
25AQI (US)
12th February 2026
22AQI (US)
13th February 2026
29AQI (US)
14th February 2026
31AQI (US)
15th February 2026
26AQI (US)
16th February 2026
32AQI (US)
17th February 2026
41AQI (US)
18th February 2026
30AQI (US)
19th February 2026
28AQI (US)
20th February 2026
28AQI (US)
21st February 2026
36AQI (US)
22nd February 2026
32AQI (US)
23rd February 2026
30AQI (US)
24th February 2026
49AQI (US)
25th February 2026
42AQI (US)
26th February 2026
33AQI (US)
27th February 2026
31AQI (US)
28th February 2026
29AQI (US)
1st March 2026
31AQI (US)
2nd March 2026
38AQI (US)
3rd March 2026
26AQI (US)
4th March 2026
36AQI (US)
5th March 2026
45AQI (US)
6th March 2026
26AQI (US)
7th March 2026
31AQI (US)
8th March 2026
24AQI (US)
9th March 2026
33AQI (US)
10th March 2026
22AQI (US)
11th March 2026
34AQI (US)
12th March 2026
35AQI (US)
13th March 2026
40AQI (US)
14th March 2026
33AQI (US)
15th March 2026
25AQI (US)
16th March 2026
19AQI (US)
17th March 2026
18AQI (US)
18th March 2026
36AQI (US)
19th March 2026
28AQI (US)
20th March 2026
33AQI (US)
21st March 2026
31AQI (US)
22nd March 2026
21AQI (US)
23rd March 2026
25AQI (US)
24th March 2026
30AQI (US)
25th March 2026
35AQI (US)
26th March 2026
39AQI (US)
27th March 2026
24AQI (US)
28th March 2026
22AQI (US)
29th March 2026
40AQI (US)
30th March 2026
30AQI (US)
31st March 2026
27AQI (US)
1st April 2026
29AQI (US)
2nd April 2026
30AQI (US)
3rd April 2026
24AQI (US)
4th April 2026
18AQI (US)
5th April 2026
20AQI (US)
6th April 2026
24AQI (US)
7th April 2026
26AQI (US)
8th April 2026
23AQI (US)
9th April 2026
26AQI (US)
10th April 2026
18AQI (US)
11th April 2026
22AQI (US)
12th April 2026
33AQI (US)
13th April 2026
34AQI (US)
14th April 2026
28AQI (US)
15th April 2026
32AQI (US)
16th April 2026
38AQI (US)
17th April 2026
18th April 2026
30AQI (US)
19th April 2026
27AQI (US)
20th April 2026
21AQI (US)
21st April 2026
23AQI (US)
22nd April 2026
23rd April 2026
21AQI (US)
24th April 2026
25AQI (US)
25th April 2026
25AQI (US)
26th April 2026
23AQI (US)
27th April 2026
34AQI (US)
28th April 2026
18AQI (US)
29th April 2026
24AQI (US)
30th April 2026
22AQI (US)
1st May 2026
23AQI (US)
2nd May 2026
20AQI (US)
3rd May 2026
21AQI (US)
4th May 2026
25AQI (US)
5th May 2026
23AQI (US)
6th May 2026
26AQI (US)
7th May 2026
21AQI (US)
8th May 2026
22AQI (US)
9th May 2026
10th May 2026
20AQI (US)
11th May 2026
20AQI (US)
12th May 2026
17AQI (US)
13th May 2026
26AQI (US)
14th May 2026
17AQI (US)
15th May 2026
20AQI (US)
16th May 2026
28AQI (US)
17th May 2026
33AQI (US)
18th May 2026
29AQI (US)
19th May 2026
29AQI (US)
20th May 2026
22AQI (US)
21st May 2026
23AQI (US)
22nd May 2026
20AQI (US)
23rd May 2026
21AQI (US)
24th May 2026
22AQI (US)
25th May 2026
19AQI (US)
26th May 2026
16AQI (US)
27th May 2026
28AQI (US)
28th May 2026
44AQI (US)
29th May 2026
20AQI (US)
30th May 2026
28AQI (US)
31st May 2026
18AQI (US)
1st June 2026
22AQI (US)
2nd June 2026
23AQI (US)
3rd June 2026
28AQI (US)
4th June 2026
34AQI (US)
5th June 2026
25AQI (US)
6th June 2026
13AQI (US)
7th June 2026
13AQI (US)
8th June 2026
18AQI (US)
9th June 2026
18AQI (US)
10th June 2026
16AQI (US)
11th June 2026
15AQI (US)
12th June 2026
20AQI (US)
13th June 2026
19AQI (US)
14th June 2026
17AQI (US)
15th June 2026
19AQI (US)
16th June 2026
38AQI (US)
17th June 2026
25AQI (US)
18th June 2026
18AQI (US)
19th June 2026
17AQI (US)
20th June 2026
22AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
17AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
22AQI (US)
25th June 2026
18AQI (US)
26th June 2026
16AQI (US)
27th June 2026
17AQI (US)
28th June 2026
20AQI (US)
29th June 2026
50AQI (US)
30th June 2026
105AQI (US)
1st July 2026
34AQI (US)
2nd July 2026
21AQI (US)
3rd July 2026
16AQI (US)
4th July 2026
22AQI (US)
5th July 2026
24AQI (US)
6th July 2026
16AQI (US)
7th July 2026
19AQI (US)
8th July 2026
27AQI (US)
9th July 2026
38AQI (US)
10th July 2026
26AQI (US)
11th July 2026
16AQI (US)
12th July 2026
23AQI (US)
13th July 2026
28AQI (US)
14th July 2026
31AQI (US)
15th July 2026
38AQI (US)
16th July 2026
38AQI (US)
17th July 2026
51AQI (US)
18th July 2026
58AQI (US)
19th July 2026
53AQI (US)
20th July 2026
48AQI (US)
21st July 2026
51AQI (US)
22nd July 2026
63AQI (US)
23rd July 2026
68AQI (US)
24th July 2026
58AQI (US)
25th July 2026
57AQI (US)
26th July 2026
102AQI (US)
27th July 2026
111AQI (US)
28th July 2026
102AQI (US)
29th July 2026
92AQI (US)
30th July 2026
89AQI (US)
31st July 2026
72AQI (US)
1st August 2026
81AQI (US)
2nd August 2026
70AQI (US)
3rd August 2026
108AQI (US)
4th August 2026
83AQI (US)
5th August 2026
80AQI (US)
6th August 2026
93AQI (US)
7th August 2026
108AQI (US)
8th August 2026
124AQI (US)
9th August 2026
102AQI (US)
10th August 2026
110AQI (US)
11th August 2026
113AQI (US)
12th August 2026
89AQI (US)
13th August 2026
59AQI (US)
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

38AQI (US)

32AQI (US)

30AQI (US)

26AQI (US)

23AQI (US)

24AQI (US)

48AQI (US)

94AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202635AQI (US)

27
4
28
31
28
30
29
1
17
11
3
7
6
190
22
10

Highest AQI (US) recorded in

August

94AQI (US)

Lowest AQI (US) recorded in

May

23AQI (US)

202528AQI (US)

26
5
28
31
30
31
30
31
27
4
22
8
31
30
27
4
344
21

Highest AQI (US) recorded in

September

40AQI (US)

Lowest AQI (US) recorded in

May

16AQI (US)

202429AQI (US)

18
13
27
2
31
27
3
31
29
18
9
3
1
24
7
19
4
4
3
25
6
30
25
6
304
50
7
4

Highest AQI (US) recorded in

September

52AQI (US)

Lowest AQI (US) recorded in

May

11AQI (US)

202324AQI (US)

30
1
28
31
30
28
2
1
30
30
1
24
7
30
29
2
23
6
21
10
334
29
1

Highest AQI (US) recorded in

November

38AQI (US)

Lowest AQI (US) recorded in

September

15AQI (US)

202230AQI (US)

20
10
21
31
30
31
30
21
1
13
4
5
4
2
30
1
18
12
27
4
273
31
5
4
2

Highest AQI (US) recorded in

September

83AQI (US)

Lowest AQI (US) recorded in

May

13AQI (US)

202133AQI (US)

28
1
28
31
21
1
31
30
6
8
16
1
13
14
4
21
7
2
30
1
28
2
31
298
34
22
1

Highest AQI (US) recorded in

July

95AQI (US)

Lowest AQI (US) recorded in

May

15AQI (US)

202027AQI (US)

13
20
18
30
31
24
5
1
19
3
2
6
23
7
28
2
25
6
231
23
3
6

Highest AQI (US) recorded in

September

64AQI (US)

Lowest AQI (US) recorded in

June

11AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
35AQI (US)
Least Polluted Year Recorded
2023(Avg.)
24AQI (US)

Hamilton's annual 2026 AQI (US) (35) shows an average percentage change of 23.9% (worsened AQI (US)) compared to previous years: 2020 (27), 2021 (33), 2022 (30), 2023 (24), 2024 (29), 2025 (28).