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
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
15th Aug 2021
148AQILowest AQI recorded on
11th Aug 2023
12AQISame Day Analysis (8th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 16 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 8th Aug - 9th Aug 2025
Hamilton, Montana, United States
AQI
Day
Night
.
6 AM8th Aug 2025
9 PM
5 AM9th Aug 2025
Day time
Avg. Highest Time
12PM8th Aug
64AQI
Avg. Lowest Time
4PM8th Aug
53AQI
Night time
Avg. Highest Time
1AM9th Aug
61AQI
Avg. Lowest Time
3AM9th Aug
28AQI
In the last 24 hours,
Hamilton's AQI reached its highest point of 64 at 12 PM during the Day, while the lowest point, 28, was recorded at 3 AM during the Night between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hamilton, Montana, United States
JulAug
10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
10th Jul 2025316 AMAQI
10th Jul 2025317 AMAQI
10th Jul 2025338 AMAQI
10th Jul 2025329 AMAQI
10th Jul 20253310 AMAQI
10th Jul 20253511 AMAQI
10th Jul 20253212 PMAQI
10th Jul 2025341 PMAQI
10th Jul 2025342 PMAQI
10th Jul 2025363 PMAQI
10th Jul 2025374 PMAQI
10th Jul 2025365 PMAQI
10th Jul 2025356 PMAQI
10th Jul 2025357 PMAQI
10th Jul 2025348 PMAQI
10th Jul 2025339 PMAQI
10th Jul 20253310 PMAQI
10th Jul 20253511 PMAQI
11th Jul 20253612 AMAQI
11th Jul 2025371 AMAQI
11th Jul 2025422 AMAQI
11th Jul 2025413 AMAQI
11th Jul 2025424 AMAQI
11th Jul 2025425 AMAQI
17°C6/27°C
11th Jul 2025436 AMAQI
11th Jul 2025427 AMAQI
11th Jul 2025428 AMAQI
11th Jul 2025439 AMAQI
11th Jul 20254310 AMAQI
11th Jul 20254311 AMAQI
11th Jul 20254012 PMAQI
11th Jul 2025401 PMAQI
11th Jul 2025392 PMAQI
11th Jul 2025393 PMAQI
11th Jul 2025414 PMAQI
11th Jul 2025415 PMAQI
11th Jul 2025406 PMAQI
11th Jul 2025397 PMAQI
11th Jul 2025398 PMAQI
11th Jul 2025409 PMAQI
11th Jul 20254010 PMAQI
11th Jul 20253911 PMAQI
12th Jul 20254112 AMAQI
12th Jul 2025411 AMAQI
12th Jul 2025382 AMAQI
12th Jul 2025393 AMAQI
12th Jul 2025374 AMAQI
12th Jul 2025375 AMAQI
20°C13/27°C
12th Jul 2025366 AMAQI
12th Jul 2025367 AMAQI
12th Jul 2025348 AMAQI
12th Jul 2025369 AMAQI
12th Jul 20253510 AMAQI
12th Jul 20253611 AMAQI
12th Jul 20253312 PMAQI
12th Jul 2025331 PMAQI
12th Jul 2025342 PMAQI
12th Jul 2025353 PMAQI
12th Jul 2025364 PMAQI
12th Jul 2025365 PMAQI
12th Jul 2025366 PMAQI
12th Jul 2025377 PMAQI
12th Jul 2025388 PMAQI
12th Jul 2025389 PMAQI
12th Jul 20253710 PMAQI
12th Jul 20253711 PMAQI
13th Jul 20253612 AMAQI
13th Jul 2025361 AMAQI
13th Jul 2025342 AMAQI
13th Jul 2025343 AMAQI
13th Jul 2025344 AMAQI
13th Jul 2025335 AMAQI
22°C10/30°C
13th Jul 2025316 AMAQI
13th Jul 2025307 AMAQI
13th Jul 2025328 AMAQI
13th Jul 2025339 AMAQI
13th Jul 20253310 AMAQI
13th Jul 20253311 AMAQI
13th Jul 20253312 PMAQI
13th Jul 2025331 PMAQI
13th Jul 2025302 PMAQI
13th Jul 2025303 PMAQI
13th Jul 2025314 PMAQI
13th Jul 2025325 PMAQI
13th Jul 2025346 PMAQI
13th Jul 2025337 PMAQI
13th Jul 2025328 PMAQI
13th Jul 2025339 PMAQI
13th Jul 20253310 PMAQI
13th Jul 20253611 PMAQI
14th Jul 20253712 AMAQI
14th Jul 2025361 AMAQI
14th Jul 2025372 AMAQI
14th Jul 2025363 AMAQI
14th Jul 2025374 AMAQI
14th Jul 2025315 AMAQI
22°C10/32°C
14th Jul 2025316 AMAQI
14th Jul 2025357 AMAQI
14th Jul 2025358 AMAQI
14th Jul 2025399 AMAQI
14th Jul 20253910 AMAQI
14th Jul 20253711 AMAQI
14th Jul 20253712 PMAQI
14th Jul 2025371 PMAQI
14th Jul 2025382 PMAQI
14th Jul 2025403 PMAQI
14th Jul 2025404 PMAQI
14th Jul 2025405 PMAQI
14th Jul 2025406 PMAQI
14th Jul 2025407 PMAQI
14th Jul 2025408 PMAQI
14th Jul 2025389 PMAQI
14th Jul 20253810 PMAQI
14th Jul 20253811 PMAQI
15th Jul 20253812 AMAQI
15th Jul 2025381 AMAQI
15th Jul 2025432 AMAQI
15th Jul 2025423 AMAQI
15th Jul 2025424 AMAQI
15th Jul 2025435 AMAQI
23°C10/32°C
15th Jul 2025486 AMAQI
15th Jul 2025477 AMAQI
15th Jul 2025478 AMAQI
15th Jul 2025449 AMAQI
15th Jul 20254410 AMAQI
15th Jul 20254411 AMAQI
15th Jul 20254312 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025422 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025444 PMAQI
15th Jul 2025445 PMAQI
15th Jul 2025446 PMAQI
15th Jul 2025457 PMAQI
15th Jul 2025458 PMAQI
15th Jul 2025459 PMAQI
15th Jul 20254610 PMAQI
15th Jul 20254611 PMAQI
16th Jul 20254612 AMAQI
16th Jul 2025461 AMAQI
16th Jul 2025472 AMAQI
16th Jul 2025513 AMAQI
16th Jul 2025534 AMAQI
16th Jul 2025545 AMAQI
15°C6/19°C
16th Jul 2025556 AMAQI
16th Jul 2025567 AMAQI
16th Jul 2025568 AMAQI
16th Jul 2025539 AMAQI
16th Jul 20255510 AMAQI
16th Jul 20255211 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025501 PMAQI
16th Jul 2025512 PMAQI
16th Jul 2025503 PMAQI
16th Jul 2025514 PMAQI
16th Jul 2025505 PMAQI
16th Jul 2025516 PMAQI
16th Jul 2025517 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025539 PMAQI
16th Jul 20255310 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20254712 AMAQI
17th Jul 2025471 AMAQI
17th Jul 2025362 AMAQI
17th Jul 2025353 AMAQI
17th Jul 2025344 AMAQI
17th Jul 2025335 AMAQI
17°C4/26°C
17th Jul 2025336 AMAQI
17th Jul 2025337 AMAQI
17th Jul 2025348 AMAQI
17th Jul 2025369 AMAQI
17th Jul 20253510 AMAQI
17th Jul 20253611 AMAQI
17th Jul 20253612 PMAQI
17th Jul 2025401 PMAQI
17th Jul 2025392 PMAQI
17th Jul 2025343 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025356 PMAQI
17th Jul 2025357 PMAQI
17th Jul 2025348 PMAQI
17th Jul 2025339 PMAQI
17th Jul 20253210 PMAQI
17th Jul 20253111 PMAQI
18th Jul 20253112 AMAQI
18th Jul 2025301 AMAQI
18th Jul 2025252 AMAQI
18th Jul 2025243 AMAQI
18th Jul 2025254 AMAQI
18th Jul 2025255 AMAQI
21°C9/30°C
18th Jul 2025266 AMAQI
18th Jul 2025257 AMAQI
18th Jul 2025248 AMAQI
18th Jul 2025249 AMAQI
18th Jul 20252510 AMAQI
18th Jul 20252511 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025211 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025233 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025266 PMAQI
18th Jul 2025257 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025249 PMAQI
18th Jul 20252410 PMAQI
18th Jul 20252511 PMAQI
19th Jul 20252512 AMAQI
19th Jul 2025261 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025303 AMAQI
19th Jul 2025294 AMAQI
19th Jul 2025305 AMAQI
21°C6/31°C
19th Jul 2025286 AMAQI
19th Jul 2025297 AMAQI
19th Jul 2025298 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252810 AMAQI
19th Jul 20253111 AMAQI
19th Jul 20253212 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025312 PMAQI
19th Jul 2025323 PMAQI
19th Jul 2025314 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025287 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025299 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253111 PMAQI
20th Jul 20252712 AMAQI
20th Jul 2025281 AMAQI
20th Jul 2025272 AMAQI
20th Jul 2025273 AMAQI
20th Jul 2025274 AMAQI
20th Jul 2025275 AMAQI
19°C8/27°C
20th Jul 2025276 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025269 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025231 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025255 PMAQI
20th Jul 2025266 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025298 PMAQI
20th Jul 2025299 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20253111 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025321 AMAQI
21st Jul 2025382 AMAQI
21st Jul 2025403 AMAQI
21st Jul 2025444 AMAQI
21st Jul 2025475 AMAQI
19°C8/27°C
21st Jul 2025496 AMAQI
21st Jul 2025477 AMAQI
21st Jul 2025468 AMAQI
21st Jul 2025439 AMAQI
21st Jul 20254010 AMAQI
21st Jul 20253511 AMAQI
21st Jul 20253212 PMAQI
21st Jul 2025311 PMAQI
21st Jul 2025302 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025314 PMAQI
21st Jul 2025345 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025357 PMAQI
21st Jul 2025368 PMAQI
21st Jul 2025399 PMAQI
21st Jul 20253710 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20253512 AMAQI
22nd Jul 2025351 AMAQI
22nd Jul 2025262 AMAQI
22nd Jul 2025243 AMAQI
22nd Jul 2025224 AMAQI
22nd Jul 2025225 AMAQI
17°C9/22°C
22nd Jul 2025226 AMAQI
22nd Jul 2025217 AMAQI
22nd Jul 2025218 AMAQI
22nd Jul 2025239 AMAQI
22nd Jul 20252410 AMAQI
22nd Jul 20252411 AMAQI
22nd Jul 20252512 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025222 PMAQI
22nd Jul 2025213 PMAQI
22nd Jul 2025254 PMAQI
22nd Jul 2025245 PMAQI
22nd Jul 2025256 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025298 PMAQI
22nd Jul 2025279 PMAQI
22nd Jul 20252710 PMAQI
22nd Jul 20252711 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025271 AMAQI
23rd Jul 2025262 AMAQI
23rd Jul 2025263 AMAQI
23rd Jul 2025274 AMAQI
23rd Jul 2025275 AMAQI
17°C5/24°C
23rd Jul 2025276 AMAQI
23rd Jul 2025287 AMAQI
23rd Jul 2025288 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20252910 AMAQI
23rd Jul 20253111 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025251 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025296 PMAQI
23rd Jul 2025297 PMAQI
23rd Jul 2025318 PMAQI
23rd Jul 2025309 PMAQI
23rd Jul 20253210 PMAQI
23rd Jul 20253111 PMAQI
24th Jul 20253012 AMAQI
24th Jul 2025311 AMAQI
24th Jul 2025312 AMAQI
24th Jul 2025323 AMAQI
24th Jul 2025334 AMAQI
24th Jul 2025335 AMAQI
18°C10/25°C
24th Jul 2025336 AMAQI
24th Jul 2025337 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025349 AMAQI
24th Jul 20253510 AMAQI
24th Jul 20253711 AMAQI
24th Jul 20253812 PMAQI
24th Jul 2025391 PMAQI
24th Jul 2025402 PMAQI
24th Jul 2025393 PMAQI
24th Jul 2025394 PMAQI
24th Jul 2025405 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025407 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025399 PMAQI
24th Jul 20254010 PMAQI
24th Jul 20254111 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025341 AMAQI
25th Jul 2025302 AMAQI
25th Jul 2025303 AMAQI
25th Jul 2025314 AMAQI
25th Jul 2025325 AMAQI
20°C7/29°C
25th Jul 2025336 AMAQI
25th Jul 2025337 AMAQI
25th Jul 2025348 AMAQI
25th Jul 2025359 AMAQI
25th Jul 20253410 AMAQI
25th Jul 20253211 AMAQI
25th Jul 20253012 PMAQI
25th Jul 2025311 PMAQI
25th Jul 2025312 PMAQI
25th Jul 2025313 PMAQI
25th Jul 2025314 PMAQI
25th Jul 2025315 PMAQI
25th Jul 2025316 PMAQI
25th Jul 2025357 PMAQI
25th Jul 2025368 PMAQI
25th Jul 2025369 PMAQI
25th Jul 20254110 PMAQI
25th Jul 20254611 PMAQI
26th Jul 20254212 AMAQI
26th Jul 2025401 AMAQI
26th Jul 2025452 AMAQI
26th Jul 2025473 AMAQI
26th Jul 2025444 AMAQI
26th Jul 2025435 AMAQI
20°C7/31°C
26th Jul 2025456 AMAQI
26th Jul 2025437 AMAQI
26th Jul 2025428 AMAQI
26th Jul 2025469 AMAQI
26th Jul 20254610 AMAQI
26th Jul 20254811 AMAQI
26th Jul 20254912 PMAQI
26th Jul 2025471 PMAQI
26th Jul 2025462 PMAQI
26th Jul 2025443 PMAQI
26th Jul 2025444 PMAQI
26th Jul 2025465 PMAQI
26th Jul 2025466 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025478 PMAQI
26th Jul 2025459 PMAQI
26th Jul 20254510 PMAQI
26th Jul 20254411 PMAQI
27th Jul 20254412 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025353 AMAQI
27th Jul 2025334 AMAQI
27th Jul 2025325 AMAQI
19°C7/31°C
27th Jul 2025316 AMAQI
27th Jul 2025307 AMAQI
27th Jul 2025308 AMAQI
27th Jul 2025319 AMAQI
27th Jul 20253110 AMAQI
27th Jul 20253111 AMAQI
27th Jul 20253312 PMAQI
27th Jul 2025341 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025353 PMAQI
27th Jul 2025364 PMAQI
27th Jul 2025355 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025347 PMAQI
27th Jul 2025338 PMAQI
27th Jul 2025339 PMAQI
27th Jul 20253410 PMAQI
27th Jul 20253711 PMAQI
28th Jul 20253812 AMAQI
28th Jul 2025391 AMAQI
28th Jul 2025432 AMAQI
28th Jul 2025423 AMAQI
28th Jul 2025424 AMAQI
28th Jul 2025425 AMAQI
19°C7/30°C
28th Jul 2025426 AMAQI
28th Jul 2025427 AMAQI
28th Jul 2025428 AMAQI
28th Jul 2025439 AMAQI
28th Jul 20254210 AMAQI
28th Jul 20254311 AMAQI
28th Jul 20254112 PMAQI
28th Jul 2025401 PMAQI
28th Jul 2025402 PMAQI
28th Jul 2025403 PMAQI
28th Jul 2025424 PMAQI
28th Jul 2025415 PMAQI
28th Jul 2025416 PMAQI
28th Jul 2025417 PMAQI
28th Jul 2025428 PMAQI
28th Jul 2025429 PMAQI
28th Jul 20254110 PMAQI
28th Jul 20254011 PMAQI
29th Jul 20254112 AMAQI
29th Jul 2025401 AMAQI
29th Jul 2025372 AMAQI
29th Jul 2025383 AMAQI
29th Jul 2025384 AMAQI
29th Jul 2025385 AMAQI
21°C9/31°C
29th Jul 2025386 AMAQI
29th Jul 2025387 AMAQI
29th Jul 2025408 AMAQI
29th Jul 2025399 AMAQI
29th Jul 20253710 AMAQI
29th Jul 20253911 AMAQI
29th Jul 20253812 PMAQI
29th Jul 2025361 PMAQI
29th Jul 2025362 PMAQI
29th Jul 2025373 PMAQI
29th Jul 2025384 PMAQI
29th Jul 2025395 PMAQI
29th Jul 2025396 PMAQI
29th Jul 2025397 PMAQI
29th Jul 2025398 PMAQI
29th Jul 2025389 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253711 PMAQI
30th Jul 20253812 AMAQI
30th Jul 2025381 AMAQI
30th Jul 2025352 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025364 AMAQI
30th Jul 2025355 AMAQI
20°C7/32°C
30th Jul 2025356 AMAQI
30th Jul 2025357 AMAQI
30th Jul 2025368 AMAQI
30th Jul 2025379 AMAQI
30th Jul 20253710 AMAQI
30th Jul 20253711 AMAQI
30th Jul 20253712 PMAQI
30th Jul 2025371 PMAQI
30th Jul 2025382 PMAQI
30th Jul 2025373 PMAQI
30th Jul 2025394 PMAQI
30th Jul 2025385 PMAQI
30th Jul 2025366 PMAQI
30th Jul 2025387 PMAQI
30th Jul 2025398 PMAQI
30th Jul 2025419 PMAQI
30th Jul 20254010 PMAQI
30th Jul 20254111 PMAQI
31st Jul 20254012 AMAQI
31st Jul 2025411 AMAQI
31st Jul 2025472 AMAQI
31st Jul 2025493 AMAQI
31st Jul 2025584 AMAQI
31st Jul 2025565 AMAQI
19°C8/31°C
31st Jul 2025576 AMAQI
31st Jul 2025557 AMAQI
31st Jul 2025728 AMAQI
31st Jul 2025709 AMAQI
31st Jul 20255410 AMAQI
31st Jul 20254111 AMAQI
31st Jul 20256612 PMAQI
31st Jul 2025951 PMAQI
31st Jul 2025912 PMAQI
31st Jul 2025843 PMAQI
31st Jul 2025734 PMAQI
31st Jul 2025645 PMAQI
31st Jul 2025586 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025578 PMAQI
31st Jul 2025849 PMAQI
31st Jul 20257110 PMAQI
31st Jul 20256111 PMAQI
1st Aug 20255912 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025592 AMAQI
1st Aug 2025523 AMAQI
1st Aug 2025524 AMAQI
1st Aug 2025535 AMAQI
20°C11/31°C
1st Aug 2025566 AMAQI
1st Aug 2025517 AMAQI
1st Aug 2025498 AMAQI
1st Aug 2025489 AMAQI
1st Aug 20254510 AMAQI
1st Aug 20254311 AMAQI
1st Aug 20253912 PMAQI
1st Aug 2025351 PMAQI
1st Aug 2025322 PMAQI
1st Aug 2025293 PMAQI
1st Aug 2025254 PMAQI
1st Aug 2025255 PMAQI
1st Aug 2025256 PMAQI
1st Aug 2025247 PMAQI
1st Aug 2025238 PMAQI
1st Aug 2025409 PMAQI
1st Aug 20253210 PMAQI
1st Aug 20252411 PMAQI
2nd Aug 20252612 AMAQI
2nd Aug 2025271 AMAQI
2nd Aug 2025262 AMAQI
2nd Aug 2025263 AMAQI
2nd Aug 2025234 AMAQI
2nd Aug 2025235 AMAQI
19°C10/29°C
2nd Aug 2025236 AMAQI
2nd Aug 2025247 AMAQI
2nd Aug 2025248 AMAQI
2nd Aug 2025259 AMAQI
2nd Aug 20252610 AMAQI
2nd Aug 20252611 AMAQI
2nd Aug 20252712 PMAQI
2nd Aug 2025271 PMAQI
2nd Aug 2025262 PMAQI
2nd Aug 2025273 PMAQI
2nd Aug 2025304 PMAQI
2nd Aug 2025365 PMAQI
2nd Aug 2025396 PMAQI
2nd Aug 2025397 PMAQI
2nd Aug 2025438 PMAQI
2nd Aug 2025369 PMAQI
2nd Aug 20253910 PMAQI
2nd Aug 20254711 PMAQI
3rd Aug 20255112 AMAQI
3rd Aug 2025511 AMAQI
3rd Aug 2025532 AMAQI
3rd Aug 2025533 AMAQI
3rd Aug 2025544 AMAQI
3rd Aug 2025575 AMAQI
19°C7/26°C
3rd Aug 2025616 AMAQI
3rd Aug 2025657 AMAQI
3rd Aug 2025738 AMAQI
3rd Aug 2025679 AMAQI
3rd Aug 20256810 AMAQI
3rd Aug 20256911 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025631 PMAQI
3rd Aug 2025662 PMAQI
3rd Aug 2025653 PMAQI
3rd Aug 2025674 PMAQI
3rd Aug 2025705 PMAQI
3rd Aug 2025616 PMAQI
3rd Aug 2025527 PMAQI
3rd Aug 2025498 PMAQI
3rd Aug 2025629 PMAQI
3rd Aug 20256710 PMAQI
3rd Aug 20257411 PMAQI
4th Aug 20256412 AMAQI
4th Aug 2025691 AMAQI
4th Aug 2025672 AMAQI
4th Aug 2025653 AMAQI
4th Aug 2025724 AMAQI
4th Aug 2025665 AMAQI
17°C6/29°C
4th Aug 2025656 AMAQI
4th Aug 2025657 AMAQI
4th Aug 2025698 AMAQI
4th Aug 2025789 AMAQI
4th Aug 20259010 AMAQI
4th Aug 20259411 AMAQI
4th Aug 20259312 PMAQI
4th Aug 2025941 PMAQI
4th Aug 2025872 PMAQI
4th Aug 2025913 PMAQI
4th Aug 2025864 PMAQI
4th Aug 2025815 PMAQI
4th Aug 2025796 PMAQI
4th Aug 2025757 PMAQI
4th Aug 2025748 PMAQI
4th Aug 2025829 PMAQI
4th Aug 20257410 PMAQI
4th Aug 20257311 PMAQI
5th Aug 20257212 AMAQI
5th Aug 2025681 AMAQI
5th Aug 2025682 AMAQI
5th Aug 2025763 AMAQI
5th Aug 2025744 AMAQI
5th Aug 2025765 AMAQI
17°C8/28°C
5th Aug 2025746 AMAQI
5th Aug 2025757 AMAQI
5th Aug 2025748 AMAQI
5th Aug 2025749 AMAQI
5th Aug 20257410 AMAQI
5th Aug 20257211 AMAQI
5th Aug 20257012 PMAQI
5th Aug 2025681 PMAQI
5th Aug 2025632 PMAQI
5th Aug 2025573 PMAQI
5th Aug 2025544 PMAQI
5th Aug 2025545 PMAQI
5th Aug 2025576 PMAQI
5th Aug 2025607 PMAQI
5th Aug 2025638 PMAQI
5th Aug 2025729 PMAQI
5th Aug 20257010 PMAQI
5th Aug 20256511 PMAQI
6th Aug 20256312 AMAQI
6th Aug 2025631 AMAQI
6th Aug 2025622 AMAQI
6th Aug 2025643 AMAQI
6th Aug 2025654 AMAQI
6th Aug 2025635 AMAQI
17°C6/27°C
6th Aug 2025636 AMAQI
6th Aug 2025607 AMAQI
6th Aug 2025588 AMAQI
6th Aug 2025589 AMAQI
6th Aug 20255610 AMAQI
6th Aug 20255311 AMAQI
6th Aug 20255112 PMAQI
6th Aug 2025511 PMAQI
6th Aug 2025512 PMAQI
6th Aug 2025513 PMAQI
6th Aug 2025514 PMAQI
6th Aug 2025535 PMAQI
6th Aug 2025546 PMAQI
6th Aug 2025527 PMAQI
6th Aug 2025528 PMAQI
6th Aug 2025599 PMAQI
6th Aug 20256210 PMAQI
6th Aug 20255711 PMAQI
7th Aug 20255812 AMAQI
7th Aug 2025571 AMAQI
7th Aug 2025532 AMAQI
7th Aug 2025603 AMAQI
7th Aug 2025594 AMAQI
7th Aug 2025605 AMAQI
18°C7/30°C
7th Aug 2025596 AMAQI
7th Aug 2025567 AMAQI
7th Aug 2025558 AMAQI
7th Aug 2025579 AMAQI
7th Aug 20255610 AMAQI
7th Aug 20255711 AMAQI
7th Aug 20255712 PMAQI
7th Aug 2025561 PMAQI
7th Aug 2025542 PMAQI
7th Aug 2025553 PMAQI
7th Aug 2025564 PMAQI
7th Aug 2025575 PMAQI
7th Aug 2025556 PMAQI
7th Aug 2025567 PMAQI
7th Aug 2025578 PMAQI
7th Aug 2025569 PMAQI
7th Aug 20255610 PMAQI
7th Aug 20255611 PMAQI
8th Aug 20255712 AMAQI
8th Aug 2025581 AMAQI
8th Aug 2025602 AMAQI
8th Aug 2025613 AMAQI
8th Aug 2025614 AMAQI
8th Aug 2025605 AMAQI
11°C2/19°C
8th Aug 2025616 AMAQI
8th Aug 2025617 AMAQI
8th Aug 2025628 AMAQI
8th Aug 2025619 AMAQI
8th Aug 20256110 AMAQI
8th Aug 20256111 AMAQI
8th Aug 20256412 PMAQI
8th Aug 2025581 PMAQI
8th Aug 2025562 PMAQI
8th Aug 2025533 PMAQI
8th Aug 2025534 PMAQI
8th Aug 2025555 PMAQI
8th Aug 2025556 PMAQI
8th Aug 2025557 PMAQI
8th Aug 2025548 PMAQI
8th Aug 2025589 PMAQI
8th Aug 20255710 PMAQI
8th Aug 20255411 PMAQI
9th Aug 20255512 AMAQI
9th Aug 2025611 AMAQI
9th Aug 2025492 AMAQI
9th Aug 2025283 AMAQI
9th Aug 2025294 AMAQI
9th Aug 2025305 AMAQI
10°C0/20°C
9th Aug 2025306 AMAQI
6 AM9th Aug 2025317 AMAQI
9th Aug 2025308 AMAQI
9th Aug 2025309 AMAQI
9th Aug 20253110 AMAQI
9th Aug 20253111 AMAQI
9th Aug 20252612 PMAQI
9th Aug 2025271 PMAQI
1 PM9th Aug 2025152 PMAQI
9th Aug 2025263 PMAQI
9th Aug 2025234 PMAQI
9th Aug 2025235 PMAQI
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
9 PM
44AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
6 AM - 8 PM
42AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 9 PM (Avg. 44), while the lowest AQI was between 6 AM to 8 PM (Avg. 42).
Night time
Avg. Highest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).
2025 Days Vs Air Quality
Hamilton, Montana, United States
2025
98%
215
2%
5
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Good
215 DaysModerate
5 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 221 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
Hamilton, Montana, United States
AQI levels in 2025
AQI
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.
1st January 2025
23AQI
23AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
50AQI
50AQI
4th January 2025
41AQI
41AQI
5th January 2025
27AQI
27AQI
6th January 2025
38AQI
38AQI
7th January 2025
37AQI
37AQI
8th January 2025
47AQI
47AQI
9th January 2025
56AQI
56AQI
10th January 2025
33AQI
33AQI
11th January 2025
25AQI
25AQI
12th January 2025
29AQI
29AQI
13th January 2025
27AQI
27AQI
14th January 2025
35AQI
35AQI
15th January 2025
54AQI
54AQI
16th January 2025
54AQI
54AQI
17th January 2025
21AQI
21AQI
18th January 2025
27AQI
27AQI
19th January 2025
40AQI
40AQI
20th January 2025
32AQI
32AQI
21st January 2025
43AQI
43AQI
22nd January 2025
26AQI
26AQI
23rd January 2025
37AQI
37AQI
24th January 2025
36AQI
36AQI
25th January 2025
31AQI
31AQI
26th January 2025
32AQI
32AQI
27th January 2025
44AQI
44AQI
28th January 2025
49AQI
49AQI
29th January 2025
56AQI
56AQI
30th January 2025
62AQI
62AQI
31st January 2025
47AQI
47AQI
1st February 2025
20AQI
20AQI
2nd February 2025
23AQI
23AQI
3rd February 2025
24AQI
24AQI
4th February 2025
22AQI
22AQI
5th February 2025
25AQI
25AQI
6th February 2025
29AQI
29AQI
7th February 2025
32AQI
32AQI
8th February 2025
33AQI
33AQI
9th February 2025
28AQI
28AQI
10th February 2025
28AQI
28AQI
11th February 2025
41AQI
41AQI
12th February 2025
48AQI
48AQI
13th February 2025
47AQI
47AQI
14th February 2025
39AQI
39AQI
15th February 2025
21AQI
21AQI
16th February 2025
18AQI
18AQI
17th February 2025
30AQI
30AQI
18th February 2025
19AQI
19AQI
19th February 2025
25AQI
25AQI
20th February 2025
35AQI
35AQI
21st February 2025
16AQI
16AQI
22nd February 2025
16AQI
16AQI
23rd February 2025
12AQI
12AQI
24th February 2025
12AQI
12AQI
25th February 2025
12AQI
12AQI
26th February 2025
17AQI
17AQI
27th February 2025
18AQI
18AQI
28th February 2025
17AQI
17AQI
1st March 2025
22AQI
22AQI
2nd March 2025
19AQI
19AQI
3rd March 2025
28AQI
28AQI
4th March 2025
24AQI
24AQI
5th March 2025
14AQI
14AQI
6th March 2025
19AQI
19AQI
7th March 2025
15AQI
15AQI
8th March 2025
12AQI
12AQI
9th March 2025
13AQI
13AQI
10th March 2025
12AQI
12AQI
11th March 2025
14AQI
14AQI
12th March 2025
15AQI
15AQI
13th March 2025
21AQI
21AQI
14th March 2025
16AQI
16AQI
15th March 2025
17AQI
17AQI
16th March 2025
15AQI
15AQI
17th March 2025
15AQI
15AQI
18th March 2025
19AQI
19AQI
19th March 2025
19AQI
19AQI
20th March 2025
14AQI
14AQI
21st March 2025
23AQI
23AQI
22nd March 2025
15AQI
15AQI
23rd March 2025
16AQI
16AQI
24th March 2025
15AQI
15AQI
25th March 2025
19AQI
19AQI
26th March 2025
24AQI
24AQI
27th March 2025
18AQI
18AQI
28th March 2025
19AQI
19AQI
29th March 2025
17AQI
17AQI
30th March 2025
18AQI
18AQI
31st March 2025
18AQI
18AQI
1st April 2025
17AQI
17AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
18AQI
18AQI
4th April 2025
18AQI
18AQI
5th April 2025
21AQI
21AQI
6th April 2025
22AQI
22AQI
7th April 2025
21AQI
21AQI
8th April 2025
14AQI
14AQI
9th April 2025
17AQI
17AQI
10th April 2025
28AQI
28AQI
11th April 2025
29AQI
29AQI
12th April 2025
18AQI
18AQI
13th April 2025
19AQI
19AQI
14th April 2025
26AQI
26AQI
15th April 2025
25AQI
25AQI
16th April 2025
31AQI
31AQI
17th April 2025
16AQI
16AQI
18th April 2025
20AQI
20AQI
19th April 2025
19AQI
19AQI
20th April 2025
15AQI
15AQI
21st April 2025
12AQI
12AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
20AQI
20AQI
24th April 2025
21AQI
21AQI
25th April 2025
19AQI
19AQI
26th April 2025
28AQI
28AQI
27th April 2025
21AQI
21AQI
28th April 2025
18AQI
18AQI
29th April 2025
16AQI
16AQI
30th April 2025
15AQI
15AQI
1st May 2025
20AQI
20AQI
2nd May 2025
24AQI
24AQI
3rd May 2025
35AQI
35AQI
4th May 2025
15AQI
15AQI
5th May 2025
15AQI
15AQI
6th May 2025
20AQI
20AQI
7th May 2025
17AQI
17AQI
8th May 2025
14AQI
14AQI
9th May 2025
16AQI
16AQI
10th May 2025
16AQI
16AQI
11th May 2025
15AQI
15AQI
12th May 2025
15AQI
15AQI
13th May 2025
14AQI
14AQI
14th May 2025
14AQI
14AQI
15th May 2025
13AQI
13AQI
16th May 2025
13AQI
13AQI
17th May 2025
12AQI
12AQI
18th May 2025
13AQI
13AQI
19th May 2025
12AQI
12AQI
20th May 2025
12AQI
12AQI
21st May 2025
13AQI
13AQI
22nd May 2025
13AQI
13AQI
23rd May 2025
12AQI
12AQI
24th May 2025
17AQI
17AQI
25th May 2025
16AQI
16AQI
26th May 2025
17AQI
17AQI
27th May 2025
17AQI
17AQI
28th May 2025
17AQI
17AQI
29th May 2025
16AQI
16AQI
30th May 2025
15AQI
15AQI
31st May 2025
16AQI
16AQI
1st June 2025
17AQI
17AQI
2nd June 2025
14AQI
14AQI
3rd June 2025
15AQI
15AQI
4th June 2025
17AQI
17AQI
5th June 2025
17AQI
17AQI
6th June 2025
25AQI
25AQI
7th June 2025
29AQI
29AQI
8th June 2025
35AQI
35AQI
9th June 2025
28AQI
28AQI
10th June 2025
20AQI
20AQI
11th June 2025
25AQI
25AQI
12th June 2025
21AQI
21AQI
13th June 2025
18AQI
18AQI
14th June 2025
20AQI
20AQI
15th June 2025
23AQI
23AQI
16th June 2025
24AQI
24AQI
17th June 2025
19AQI
19AQI
18th June 2025
19AQI
19AQI
19th June 2025
20AQI
20AQI
20th June 2025
19AQI
19AQI
21st June 2025
17AQI
17AQI
22nd June 2025
15AQI
15AQI
23rd June 2025
19AQI
19AQI
24th June 2025
29AQI
29AQI
25th June 2025
22AQI
22AQI
26th June 2025
19AQI
19AQI
27th June 2025
19AQI
19AQI
28th June 2025
16AQI
16AQI
29th June 2025
16AQI
16AQI
30th June 2025
19AQI
19AQI
1st July 2025
25AQI
25AQI
2nd July 2025
26AQI
26AQI
3rd July 2025
23AQI
23AQI
4th July 2025
19AQI
19AQI
5th July 2025
31AQI
31AQI
6th July 2025
21AQI
21AQI
7th July 2025
19AQI
19AQI
8th July 2025
20AQI
20AQI
9th July 2025
20AQI
20AQI
10th July 2025
18AQI
18AQI
11th July 2025
18AQI
18AQI
12th July 2025
22AQI
22AQI
13th July 2025
20AQI
20AQI
14th July 2025
21AQI
21AQI
15th July 2025
20AQI
20AQI
16th July 2025
28AQI
28AQI
17th July 2025
30AQI
30AQI
18th July 2025
29AQI
29AQI
19th July 2025
26AQI
26AQI
20th July 2025
22AQI
22AQI
21st July 2025
25AQI
25AQI
22nd July 2025
17AQI
17AQI
23rd July 2025
20AQI
20AQI
24th July 2025
27AQI
27AQI
25th July 2025
29AQI
29AQI
26th July 2025
33AQI
33AQI
27th July 2025
23AQI
23AQI
28th July 2025
19AQI
19AQI
29th July 2025
18AQI
18AQI
30th July 2025
20AQI
20AQI
31st July 2025
21AQI
21AQI
1st August 2025
24AQI
24AQI
2nd August 2025
24AQI
24AQI
3rd August 2025
28AQI
28AQI
4th August 2025
27AQI
27AQI
5th August 2025
24AQI
24AQI
6th August 2025
28AQI
28AQI
7th August 2025
23AQI
23AQI
8th August 2025
16AQI
16AQI
39AQI
25AQI
18AQI
20AQI
16AQI
21AQI
23AQI
24AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202523AQI
26
5
28
31
30
31
30
31
8
215
5
Highest AQI recorded in
January39AQI
Lowest AQI recorded in
May16AQI
202429AQI
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 recorded in
September52AQI
Lowest AQI recorded in
May11AQI
202324AQI
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 recorded in
November38AQI
Lowest AQI recorded in
June15AQI
202230AQI
21
10
21
31
30
31
30
21
1
13
4
5
4
2
30
1
18
12
27
4
274
31
5
4
2
Highest AQI recorded in
September83AQI
Lowest AQI recorded in
May13AQI
202133AQI
29
1
28
31
21
1
31
30
6
8
16
1
13
14
4
21
7
2
30
1
28
2
31
299
34
22
1
Highest AQI recorded in
July95AQI
Lowest AQI recorded in
May15AQI
202027AQI
13
20
18
30
31
24
5
1
19
3
2
6
23
7
28
2
25
6
231
23
3
6
Highest AQI recorded in
September64AQI
Lowest AQI recorded in
June11AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
33AQILeast Polluted Year Recorded
2025(Avg.)
23AQIHamilton's annual 2025 AQI (23) shows an average percentage change of -18.3% (improved AQI) compared to previous years: 2020 (27), 2021 (33), 2022 (30), 2023 (24), 2024 (29).
