Butte, 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
Butte, Montana, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
8th Aug 2026
92AQILowest AQI recorded on
22nd Aug 2023
15AQISame Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2024 on the same day.
Day & Night AQI Trend: 12th Aug - 13th Aug 2026
Butte, Montana, United States
AQI
Day
Night
.
6 AM12th Aug 2026
9 PM
5 AM13th Aug 2026
Day time
Avg. Highest Time
2PM12th Aug
63AQI
Avg. Lowest Time
7AM12th Aug
50AQI
Night time
Avg. Highest Time
10PM12th Aug
51AQI
Avg. Lowest Time
4AM13th Aug
29AQI
In the last 24 hours,
Butte's AQI reached its highest point of 63 at 2 PM during the Day, while the lowest point, 29, was recorded at 4 AM during the Night between 12th Aug and 13th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Butte, Montana, United States
JulAug
15th - 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 - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
15th Jul 2026146 AMAQI
15th Jul 2026177 AMAQI
15th Jul 2026328 AMAQI
15th Jul 2026219 AMAQI
15th Jul 20262110 AMAQI
15th Jul 20262711 AMAQI
15th Jul 20261912 PMAQI
15th Jul 2026301 PMAQI
15th Jul 2026252 PMAQI
15th Jul 2026323 PMAQI
15th Jul 2026214 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026217 PMAQI
15th Jul 2026308 PMAQI
15th Jul 2026199 PMAQI
15th Jul 20263010 PMAQI
15th Jul 20265211 PMAQI
16th Jul 20263412 AMAQI
16th Jul 2026181 AMAQI
16th Jul 2026262 AMAQI
16th Jul 2026193 AMAQI
16th Jul 2026324 AMAQI
16th Jul 2026445 AMAQI
18°C11/27°C
16th Jul 2026296 AMAQI
16th Jul 2026207 AMAQI
16th Jul 2026258 AMAQI
16th Jul 2026239 AMAQI
16th Jul 20262610 AMAQI
16th Jul 20262311 AMAQI
16th Jul 20262512 PMAQI
16th Jul 2026311 PMAQI
16th Jul 2026272 PMAQI
16th Jul 2026363 PMAQI
16th Jul 2026184 PMAQI
16th Jul 2026205 PMAQI
16th Jul 2026386 PMAQI
16th Jul 2026467 PMAQI
16th Jul 2026348 PMAQI
16th Jul 2026309 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262711 PMAQI
17th Jul 20262712 AMAQI
17th Jul 2026211 AMAQI
17th Jul 2026212 AMAQI
17th Jul 2026293 AMAQI
17th Jul 2026294 AMAQI
17th Jul 2026295 AMAQI
18°C12/29°C
17th Jul 2026296 AMAQI
17th Jul 2026287 AMAQI
17th Jul 2026218 AMAQI
17th Jul 2026219 AMAQI
17th Jul 20263210 AMAQI
17th Jul 20263111 AMAQI
17th Jul 20263612 PMAQI
17th Jul 2026381 PMAQI
17th Jul 2026262 PMAQI
17th Jul 2026253 PMAQI
17th Jul 2026274 PMAQI
17th Jul 2026275 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026177 PMAQI
17th Jul 2026208 PMAQI
17th Jul 2026339 PMAQI
17th Jul 20262910 PMAQI
17th Jul 20263111 PMAQI
18th Jul 20262712 AMAQI
18th Jul 2026271 AMAQI
18th Jul 2026362 AMAQI
18th Jul 2026383 AMAQI
18th Jul 2026334 AMAQI
18th Jul 2026385 AMAQI
20°C12/29°C
18th Jul 2026336 AMAQI
18th Jul 2026387 AMAQI
18th Jul 2026408 AMAQI
18th Jul 2026389 AMAQI
18th Jul 20264210 AMAQI
18th Jul 20262911 AMAQI
18th Jul 20265212 PMAQI
18th Jul 2026401 PMAQI
18th Jul 2026362 PMAQI
18th Jul 2026213 PMAQI
18th Jul 2026334 PMAQI
18th Jul 2026215 PMAQI
18th Jul 2026236 PMAQI
18th Jul 2026237 PMAQI
18th Jul 2026258 PMAQI
18th Jul 2026339 PMAQI
18th Jul 20262910 PMAQI
18th Jul 20263311 PMAQI
19th Jul 20262312 AMAQI
19th Jul 2026221 AMAQI
19th Jul 2026292 AMAQI
19th Jul 2026263 AMAQI
19th Jul 2026254 AMAQI
19th Jul 2026385 AMAQI
20°C11/30°C
19th Jul 2026336 AMAQI
19th Jul 2026337 AMAQI
19th Jul 2026368 AMAQI
19th Jul 2026409 AMAQI
19th Jul 20264210 AMAQI
19th Jul 20264211 AMAQI
19th Jul 20265012 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026212 PMAQI
19th Jul 2026293 PMAQI
19th Jul 2026294 PMAQI
19th Jul 2026335 PMAQI
19th Jul 2026336 PMAQI
19th Jul 2026367 PMAQI
19th Jul 2026368 PMAQI
19th Jul 2026389 PMAQI
19th Jul 20263610 PMAQI
19th Jul 20262911 PMAQI
20th Jul 20262512 AMAQI
20th Jul 2026291 AMAQI
20th Jul 2026292 AMAQI
20th Jul 2026293 AMAQI
20th Jul 2026254 AMAQI
20th Jul 2026235 AMAQI
21°C12/29°C
20th Jul 2026236 AMAQI
20th Jul 2026257 AMAQI
20th Jul 2026238 AMAQI
20th Jul 2026239 AMAQI
20th Jul 20262710 AMAQI
20th Jul 20262911 AMAQI
20th Jul 20262112 PMAQI
20th Jul 2026271 PMAQI
20th Jul 2026312 PMAQI
20th Jul 2026293 PMAQI
20th Jul 2026234 PMAQI
20th Jul 2026315 PMAQI
20th Jul 2026336 PMAQI
20th Jul 2026507 PMAQI
20th Jul 2026468 PMAQI
20th Jul 20263110 PMAQI
20th Jul 20262511 PMAQI
21st Jul 20262712 AMAQI
21st Jul 2026291 AMAQI
21st Jul 2026272 AMAQI
21st Jul 2026273 AMAQI
21st Jul 2026234 AMAQI
21st Jul 2026215 AMAQI
20°C12/28°C
21st Jul 2026256 AMAQI
21st Jul 2026297 AMAQI
21st Jul 2026298 AMAQI
21st Jul 2026259 AMAQI
21st Jul 20262510 AMAQI
21st Jul 20262911 AMAQI
21st Jul 20262912 PMAQI
21st Jul 2026361 PMAQI
21st Jul 2026292 PMAQI
21st Jul 2026293 PMAQI
21st Jul 2026314 PMAQI
21st Jul 2026295 PMAQI
21st Jul 2026296 PMAQI
21st Jul 2026277 PMAQI
21st Jul 2026318 PMAQI
21st Jul 2026339 PMAQI
21st Jul 20262910 PMAQI
21st Jul 20262911 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026291 AMAQI
22nd Jul 2026292 AMAQI
22nd Jul 2026293 AMAQI
22nd Jul 2026274 AMAQI
22nd Jul 2026275 AMAQI
19°C10/29°C
22nd Jul 2026296 AMAQI
22nd Jul 2026297 AMAQI
22nd Jul 2026298 AMAQI
22nd Jul 2026299 AMAQI
22nd Jul 20263110 AMAQI
22nd Jul 20263311 AMAQI
22nd Jul 20263112 PMAQI
22nd Jul 2026311 PMAQI
22nd Jul 2026312 PMAQI
22nd Jul 2026333 PMAQI
22nd Jul 2026334 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026296 PMAQI
22nd Jul 2026337 PMAQI
22nd Jul 2026388 PMAQI
22nd Jul 2026319 PMAQI
22nd Jul 20262710 PMAQI
22nd Jul 20262511 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026292 AMAQI
23rd Jul 2026313 AMAQI
23rd Jul 2026364 AMAQI
23rd Jul 2026315 AMAQI
19°C14/28°C
23rd Jul 2026486 AMAQI
23rd Jul 2026367 AMAQI
23rd Jul 2026228 AMAQI
23rd Jul 2026369 AMAQI
23rd Jul 20263310 AMAQI
23rd Jul 20262411 AMAQI
23rd Jul 20262312 PMAQI
23rd Jul 2026211 PMAQI
23rd Jul 2026292 PMAQI
23rd Jul 2026333 PMAQI
23rd Jul 2026384 PMAQI
23rd Jul 2026485 PMAQI
23rd Jul 2026466 PMAQI
23rd Jul 2026407 PMAQI
23rd Jul 2026408 PMAQI
23rd Jul 2026429 PMAQI
23rd Jul 20264010 PMAQI
23rd Jul 20264011 PMAQI
24th Jul 20264012 AMAQI
24th Jul 2026421 AMAQI
24th Jul 2026402 AMAQI
24th Jul 2026423 AMAQI
24th Jul 2026384 AMAQI
24th Jul 2026385 AMAQI
20°C11/30°C
24th Jul 2026296 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026279 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263311 AMAQI
24th Jul 20263312 PMAQI
24th Jul 2026361 PMAQI
24th Jul 2026332 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026214 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026296 PMAQI
24th Jul 2026337 PMAQI
24th Jul 2026428 PMAQI
24th Jul 2026279 PMAQI
24th Jul 20263410 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20263112 AMAQI
25th Jul 2026331 AMAQI
25th Jul 2026332 AMAQI
25th Jul 2026363 AMAQI
25th Jul 2026384 AMAQI
25th Jul 2026365 AMAQI
22°C13/33°C
25th Jul 2026316 AMAQI
25th Jul 2026277 AMAQI
25th Jul 2026348 AMAQI
25th Jul 2026319 AMAQI
25th Jul 20263610 AMAQI
25th Jul 20262311 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026211 PMAQI
25th Jul 2026362 PMAQI
25th Jul 2026343 PMAQI
25th Jul 2026384 PMAQI
25th Jul 2026365 PMAQI
25th Jul 2026336 PMAQI
25th Jul 2026337 PMAQI
25th Jul 2026268 PMAQI
25th Jul 2026319 PMAQI
25th Jul 20263210 PMAQI
25th Jul 20263111 PMAQI
26th Jul 20263312 AMAQI
26th Jul 2026381 AMAQI
26th Jul 2026312 AMAQI
26th Jul 2026423 AMAQI
26th Jul 2026234 AMAQI
26th Jul 2026215 AMAQI
23°C14/33°C
26th Jul 2026256 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026278 AMAQI
26th Jul 2026279 AMAQI
26th Jul 20263310 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20265112 PMAQI
26th Jul 2026531 PMAQI
26th Jul 2026552 PMAQI
26th Jul 2026523 PMAQI
26th Jul 2026484 PMAQI
26th Jul 2026445 PMAQI
26th Jul 2026316 PMAQI
26th Jul 2026337 PMAQI
26th Jul 2026428 PMAQI
26th Jul 2026409 PMAQI
26th Jul 20264610 PMAQI
26th Jul 20265711 PMAQI
27th Jul 20266212 AMAQI
27th Jul 2026671 AMAQI
27th Jul 2026702 AMAQI
27th Jul 2026693 AMAQI
27th Jul 2026734 AMAQI
27th Jul 2026725 AMAQI
22°C12/32°C
27th Jul 2026746 AMAQI
27th Jul 2026747 AMAQI
27th Jul 2026778 AMAQI
27th Jul 2026739 AMAQI
27th Jul 20267610 AMAQI
27th Jul 20267311 AMAQI
27th Jul 20267512 PMAQI
27th Jul 2026721 PMAQI
27th Jul 2026702 PMAQI
27th Jul 2026703 PMAQI
27th Jul 2026664 PMAQI
27th Jul 2026725 PMAQI
27th Jul 2026686 PMAQI
27th Jul 2026677 PMAQI
27th Jul 2026688 PMAQI
27th Jul 2026669 PMAQI
27th Jul 20266610 PMAQI
27th Jul 20266811 PMAQI
28th Jul 20266812 AMAQI
28th Jul 2026711 AMAQI
28th Jul 2026682 AMAQI
28th Jul 2026703 AMAQI
28th Jul 2026684 AMAQI
28th Jul 2026675 AMAQI
21°C11/31°C
28th Jul 2026686 AMAQI
28th Jul 2026657 AMAQI
28th Jul 2026608 AMAQI
28th Jul 2026559 AMAQI
28th Jul 20265610 AMAQI
28th Jul 20265811 AMAQI
28th Jul 20265712 PMAQI
28th Jul 2026571 PMAQI
28th Jul 2026562 PMAQI
28th Jul 2026573 PMAQI
28th Jul 2026564 PMAQI
28th Jul 2026565 PMAQI
28th Jul 2026546 PMAQI
28th Jul 2026587 PMAQI
28th Jul 2026648 PMAQI
28th Jul 2026609 PMAQI
28th Jul 20266410 PMAQI
28th Jul 20266311 PMAQI
29th Jul 20265912 AMAQI
29th Jul 2026621 AMAQI
29th Jul 2026622 AMAQI
29th Jul 2026633 AMAQI
29th Jul 2026574 AMAQI
29th Jul 2026585 AMAQI
21°C11/31°C
29th Jul 2026566 AMAQI
29th Jul 2026557 AMAQI
29th Jul 2026578 AMAQI
29th Jul 2026559 AMAQI
29th Jul 20265510 AMAQI
29th Jul 20265511 AMAQI
29th Jul 20265512 PMAQI
29th Jul 2026561 PMAQI
29th Jul 2026562 PMAQI
29th Jul 2026573 PMAQI
29th Jul 2026564 PMAQI
29th Jul 2026575 PMAQI
29th Jul 2026576 PMAQI
29th Jul 2026527 PMAQI
29th Jul 2026508 PMAQI
29th Jul 2026339 PMAQI
29th Jul 20263310 PMAQI
29th Jul 20263611 PMAQI
30th Jul 20263112 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026402 AMAQI
30th Jul 2026233 AMAQI
30th Jul 2026254 AMAQI
30th Jul 2026465 AMAQI
20°C11/31°C
30th Jul 2026426 AMAQI
30th Jul 2026327 AMAQI
30th Jul 2026368 AMAQI
30th Jul 2026419 AMAQI
30th Jul 20264510 AMAQI
30th Jul 20265411 AMAQI
30th Jul 20265512 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026292 PMAQI
30th Jul 2026363 PMAQI
30th Jul 2026364 PMAQI
30th Jul 2026505 PMAQI
30th Jul 2026516 PMAQI
30th Jul 2026567 PMAQI
30th Jul 2026558 PMAQI
30th Jul 2026589 PMAQI
30th Jul 20265810 PMAQI
30th Jul 20264811 PMAQI
31st Jul 20264012 AMAQI
31st Jul 2026361 AMAQI
31st Jul 2026332 AMAQI
31st Jul 2026313 AMAQI
31st Jul 2026334 AMAQI
31st Jul 2026385 AMAQI
21°C10/31°C
31st Jul 2026296 AMAQI
31st Jul 2026337 AMAQI
31st Jul 2026338 AMAQI
31st Jul 2026299 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20263111 AMAQI
31st Jul 20263312 PMAQI
31st Jul 2026361 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026403 PMAQI
31st Jul 2026424 PMAQI
31st Jul 2026385 PMAQI
31st Jul 2026386 PMAQI
31st Jul 2026337 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026339 PMAQI
31st Jul 20263110 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20263112 AMAQI
1st Aug 2026311 AMAQI
1st Aug 2026362 AMAQI
1st Aug 2026343 AMAQI
1st Aug 2026314 AMAQI
1st Aug 2026295 AMAQI
21°C10/31°C
1st Aug 2026336 AMAQI
1st Aug 2026317 AMAQI
1st Aug 2026338 AMAQI
1st Aug 2026299 AMAQI
1st Aug 20262910 AMAQI
1st Aug 20263611 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026361 PMAQI
1st Aug 2026362 PMAQI
1st Aug 2026383 PMAQI
1st Aug 2026504 PMAQI
1st Aug 2026405 PMAQI
1st Aug 2026556 PMAQI
1st Aug 2026677 PMAQI
1st Aug 2026568 PMAQI
1st Aug 2026509 PMAQI
1st Aug 20265110 PMAQI
1st Aug 20265611 PMAQI
2nd Aug 20265612 AMAQI
2nd Aug 2026551 AMAQI
2nd Aug 2026532 AMAQI
2nd Aug 2026543 AMAQI
2nd Aug 2026554 AMAQI
2nd Aug 2026555 AMAQI
23°C13/34°C
2nd Aug 2026556 AMAQI
2nd Aug 2026557 AMAQI
2nd Aug 2026548 AMAQI
2nd Aug 2026579 AMAQI
2nd Aug 20265510 AMAQI
2nd Aug 20265611 AMAQI
2nd Aug 20265812 PMAQI
2nd Aug 2026581 PMAQI
2nd Aug 2026552 PMAQI
2nd Aug 2026543 PMAQI
2nd Aug 2026544 PMAQI
2nd Aug 2026505 PMAQI
2nd Aug 2026486 PMAQI
2nd Aug 2026487 PMAQI
2nd Aug 2026508 PMAQI
2nd Aug 2026409 PMAQI
2nd Aug 20262910 PMAQI
2nd Aug 20262111 PMAQI
3rd Aug 20265112 AMAQI
3rd Aug 2026481 AMAQI
3rd Aug 2026482 AMAQI
3rd Aug 2026233 AMAQI
3rd Aug 2026334 AMAQI
3rd Aug 2026545 AMAQI
18°C9/27°C
3rd Aug 2026656 AMAQI
3rd Aug 2026727 AMAQI
3rd Aug 2026778 AMAQI
3rd Aug 2026789 AMAQI
3rd Aug 20268210 AMAQI
3rd Aug 20267211 AMAQI
3rd Aug 20266412 PMAQI
3rd Aug 2026571 PMAQI
3rd Aug 2026552 PMAQI
3rd Aug 2026533 PMAQI
3rd Aug 2026574 PMAQI
3rd Aug 2026575 PMAQI
3rd Aug 2026596 PMAQI
3rd Aug 2026587 PMAQI
3rd Aug 2026608 PMAQI
3rd Aug 2026579 PMAQI
3rd Aug 20265810 PMAQI
3rd Aug 20265111 PMAQI
4th Aug 20264412 AMAQI
4th Aug 2026421 AMAQI
4th Aug 2026382 AMAQI
4th Aug 2026403 AMAQI
4th Aug 2026424 AMAQI
4th Aug 2026425 AMAQI
12°C5/20°C
4th Aug 2026426 AMAQI
4th Aug 2026387 AMAQI
4th Aug 2026368 AMAQI
4th Aug 2026339 AMAQI
4th Aug 20263110 AMAQI
4th Aug 20263811 AMAQI
4th Aug 20263612 PMAQI
4th Aug 2026421 PMAQI
4th Aug 2026422 PMAQI
4th Aug 2026403 PMAQI
4th Aug 2026364 PMAQI
4th Aug 2026385 PMAQI
4th Aug 2026336 PMAQI
4th Aug 2026337 PMAQI
4th Aug 2026388 PMAQI
4th Aug 2026409 PMAQI
4th Aug 20264010 PMAQI
4th Aug 20263311 PMAQI
5th Aug 20263612 AMAQI
5th Aug 2026311 AMAQI
5th Aug 2026312 AMAQI
5th Aug 2026293 AMAQI
5th Aug 2026314 AMAQI
5th Aug 2026295 AMAQI
13°C2/23°C
5th Aug 2026316 AMAQI
5th Aug 2026337 AMAQI
5th Aug 2026318 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20262710 AMAQI
5th Aug 20263111 AMAQI
5th Aug 20263812 PMAQI
5th Aug 2026511 PMAQI
5th Aug 2026562 PMAQI
5th Aug 2026543 PMAQI
5th Aug 2026564 PMAQI
5th Aug 2026565 PMAQI
5th Aug 2026536 PMAQI
5th Aug 2026527 PMAQI
5th Aug 2026518 PMAQI
5th Aug 2026649 PMAQI
5th Aug 20266210 PMAQI
5th Aug 20266611 PMAQI
6th Aug 20265712 AMAQI
6th Aug 2026561 AMAQI
6th Aug 2026602 AMAQI
6th Aug 2026573 AMAQI
6th Aug 2026574 AMAQI
6th Aug 2026535 AMAQI
16°C4/27°C
6th Aug 2026486 AMAQI
6th Aug 2026487 AMAQI
6th Aug 2026488 AMAQI
6th Aug 2026409 AMAQI
6th Aug 20265210 AMAQI
6th Aug 20265411 AMAQI
6th Aug 20266612 PMAQI
6th Aug 2026661 PMAQI
6th Aug 2026642 PMAQI
6th Aug 2026653 PMAQI
6th Aug 2026674 PMAQI
6th Aug 2026705 PMAQI
6th Aug 2026706 PMAQI
6th Aug 2026667 PMAQI
6th Aug 2026628 PMAQI
6th Aug 2026649 PMAQI
6th Aug 20266410 PMAQI
6th Aug 20266211 PMAQI
7th Aug 20266312 AMAQI
7th Aug 2026571 AMAQI
7th Aug 2026562 AMAQI
7th Aug 2026533 AMAQI
7th Aug 2026524 AMAQI
7th Aug 2026545 AMAQI
18°C8/29°C
7th Aug 2026546 AMAQI
7th Aug 2026577 AMAQI
7th Aug 2026638 AMAQI
7th Aug 2026689 AMAQI
7th Aug 20267610 AMAQI
7th Aug 20267311 AMAQI
7th Aug 20266912 PMAQI
7th Aug 2026761 PMAQI
7th Aug 2026942 PMAQI
7th Aug 2026983 PMAQI
7th Aug 20261084 PMAQI
7th Aug 20261235 PMAQI
7th Aug 20261336 PMAQI
7th Aug 20261387 PMAQI
7th Aug 20261358 PMAQI
7th Aug 20261259 PMAQI
7th Aug 202611510 PMAQI
7th Aug 202610411 PMAQI
8th Aug 202610212 AMAQI
8th Aug 20261001 AMAQI
8th Aug 2026862 AMAQI
8th Aug 2026873 AMAQI
8th Aug 2026934 AMAQI
8th Aug 2026905 AMAQI
21°C9/32°C
8th Aug 2026826 AMAQI
8th Aug 2026767 AMAQI
8th Aug 2026708 AMAQI
8th Aug 2026719 AMAQI
8th Aug 20268010 AMAQI
8th Aug 20268411 AMAQI
8th Aug 202610312 PMAQI
8th Aug 20261121 PMAQI
8th Aug 20261112 PMAQI
8th Aug 20261023 PMAQI
8th Aug 2026924 PMAQI
8th Aug 2026825 PMAQI
8th Aug 2026806 PMAQI
8th Aug 2026887 PMAQI
8th Aug 20261108 PMAQI
8th Aug 20261209 PMAQI
8th Aug 202611410 PMAQI
8th Aug 20268611 PMAQI
9th Aug 20267012 AMAQI
9th Aug 2026681 AMAQI
9th Aug 2026722 AMAQI
9th Aug 2026713 AMAQI
9th Aug 2026724 AMAQI
9th Aug 2026675 AMAQI
21°C11/31°C
9th Aug 2026666 AMAQI
9th Aug 2026647 AMAQI
9th Aug 2026668 AMAQI
9th Aug 2026669 AMAQI
9th Aug 20266410 AMAQI
9th Aug 20266511 AMAQI
9th Aug 20266412 PMAQI
9th Aug 2026671 PMAQI
9th Aug 2026682 PMAQI
9th Aug 2026723 PMAQI
9th Aug 2026704 PMAQI
9th Aug 2026655 PMAQI
9th Aug 2026606 PMAQI
9th Aug 2026587 PMAQI
9th Aug 2026578 PMAQI
9th Aug 2026619 PMAQI
9th Aug 20266210 PMAQI
9th Aug 20266011 PMAQI
10th Aug 20266012 AMAQI
10th Aug 2026581 AMAQI
10th Aug 2026592 AMAQI
10th Aug 2026593 AMAQI
10th Aug 2026584 AMAQI
10th Aug 2026585 AMAQI
19°C9/29°C
10th Aug 2026576 AMAQI
10th Aug 2026577 AMAQI
10th Aug 2026568 AMAQI
10th Aug 2026569 AMAQI
10th Aug 20265710 AMAQI
10th Aug 20265811 AMAQI
10th Aug 20266212 PMAQI
10th Aug 2026641 PMAQI
10th Aug 2026672 PMAQI
10th Aug 2026763 PMAQI
10th Aug 2026734 PMAQI
10th Aug 2026685 PMAQI
10th Aug 2026686 PMAQI
10th Aug 2026687 PMAQI
10th Aug 2026668 PMAQI
10th Aug 2026719 PMAQI
10th Aug 20266210 PMAQI
10th Aug 20265711 PMAQI
11th Aug 20265612 AMAQI
11th Aug 2026531 AMAQI
11th Aug 2026552 AMAQI
11th Aug 2026543 AMAQI
11th Aug 2026464 AMAQI
11th Aug 2026505 AMAQI
19°C8/30°C
11th Aug 2026486 AMAQI
11th Aug 2026487 AMAQI
11th Aug 2026498 AMAQI
11th Aug 2026489 AMAQI
11th Aug 20265110 AMAQI
11th Aug 20265511 AMAQI
11th Aug 20266212 PMAQI
11th Aug 2026741 PMAQI
11th Aug 2026802 PMAQI
11th Aug 2026903 PMAQI
11th Aug 2026824 PMAQI
11th Aug 2026685 PMAQI
11th Aug 2026586 PMAQI
11th Aug 2026687 PMAQI
11th Aug 2026658 PMAQI
11th Aug 2026729 PMAQI
11th Aug 20266610 PMAQI
11th Aug 20265811 PMAQI
12th Aug 20265412 AMAQI
12th Aug 2026551 AMAQI
12th Aug 2026562 AMAQI
12th Aug 2026533 AMAQI
12th Aug 2026554 AMAQI
12th Aug 2026525 AMAQI
19°C8/29°C
12th Aug 2026506 AMAQI
12th Aug 2026507 AMAQI
12th Aug 2026518 AMAQI
12th Aug 2026529 AMAQI
12th Aug 20265310 AMAQI
12th Aug 20265311 AMAQI
12th Aug 20265612 PMAQI
12th Aug 2026601 PMAQI
12th Aug 2026632 PMAQI
12th Aug 2026603 PMAQI
12th Aug 2026604 PMAQI
12th Aug 2026595 PMAQI
12th Aug 2026586 PMAQI
12th Aug 2026567 PMAQI
12th Aug 2026558 PMAQI
12th Aug 2026509 PMAQI
12th Aug 20265110 PMAQI
12th Aug 20264211 PMAQI
13th Aug 20264012 AMAQI
13th Aug 2026331 AMAQI
13th Aug 2026362 AMAQI
13th Aug 2026383 AMAQI
13th Aug 2026294 AMAQI
13th Aug 2026315 AMAQI
18°C9/28°C
13th Aug 2026336 AMAQI
6 AM13th Aug 2026367 AMAQI
13th Aug 2026338 AMAQI
13th Aug 2026299 AMAQI
13th Aug 20262210 AMAQI
13th Aug 20262611 AMAQI
13th Aug 20263112 PMAQI
13th Aug 2026261 PMAQI
1 PM13th Aug 2026362 PMAQI
13th Aug 2026383 PMAQI
13th Aug 2026364 PMAQI
13th Aug 2026405 PMAQI
13th Aug 2026406 PMAQI
13th Aug 2026347 PMAQI
13th Aug 2026318 PMAQI
13th Aug 2026339 PMAQI
9 PM13th Aug 20263310 PMAQI
13th Aug 20263111 PMAQI
1 AM
5 AM
12°C5/20°C
Day time
Avg. Highest Time
12 PM - 9 PM
49AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
6 AM - 9 AM
42AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 9 PM (Avg. 49), while the lowest AQI was between 6 AM to 9 AM (Avg. 42).
Night time
Avg. Highest Time
10 PM
48AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM - 4 AM
42AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 10 PM (Avg. 48), while the lowest AQI was between 3 AM to 4 AM (Avg. 42).
2026 Days Vs Air Quality
Butte, Montana, United States
2026
94%
209
6%
13
Total number of days with different AQI categories in last 225 days in 2026 (140 days remaining)
Good
209 DaysModerate
13 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 225 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
Butte, 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
32AQI (US)
32AQI (US)
2nd January 2026
40AQI (US)
40AQI (US)
3rd January 2026
41AQI (US)
41AQI (US)
4th January 2026
30AQI (US)
30AQI (US)
5th January 2026
28AQI (US)
28AQI (US)
6th January 2026
18AQI (US)
18AQI (US)
7th January 2026
10AQI (US)
10AQI (US)
8th January 2026
24AQI (US)
24AQI (US)
9th January 2026
33AQI (US)
33AQI (US)
10th January 2026
26AQI (US)
26AQI (US)
11th January 2026
32AQI (US)
32AQI (US)
12th January 2026
42AQI (US)
42AQI (US)
13th January 2026
33AQI (US)
33AQI (US)
14th January 2026
30AQI (US)
30AQI (US)
15th January 2026
26AQI (US)
26AQI (US)
16th January 2026
21AQI (US)
21AQI (US)
17th January 2026
24AQI (US)
24AQI (US)
18th January 2026
23AQI (US)
23AQI (US)
19th January 2026
28AQI (US)
28AQI (US)
20th January 2026
26AQI (US)
26AQI (US)
21st January 2026
29AQI (US)
29AQI (US)
22nd January 2026
30AQI (US)
30AQI (US)
23rd January 2026
29AQI (US)
29AQI (US)
24th January 2026
23AQI (US)
23AQI (US)
25th January 2026
30AQI (US)
30AQI (US)
26th January 2026
34AQI (US)
34AQI (US)
27th January 2026
46AQI (US)
46AQI (US)
28th January 2026
40AQI (US)
40AQI (US)
29th January 2026
27AQI (US)
27AQI (US)
30th January 2026
27AQI (US)
27AQI (US)
31st January 2026
22AQI (US)
22AQI (US)
1st February 2026
26AQI (US)
26AQI (US)
2nd February 2026
21AQI (US)
21AQI (US)
3rd February 2026
22AQI (US)
22AQI (US)
4th February 2026
34AQI (US)
34AQI (US)
5th February 2026
33AQI (US)
33AQI (US)
6th February 2026
29AQI (US)
29AQI (US)
7th February 2026
24AQI (US)
24AQI (US)
8th February 2026
27AQI (US)
27AQI (US)
9th February 2026
37AQI (US)
37AQI (US)
10th February 2026
21AQI (US)
21AQI (US)
11th February 2026
24AQI (US)
24AQI (US)
12th February 2026
22AQI (US)
22AQI (US)
13th February 2026
28AQI (US)
28AQI (US)
14th February 2026
26AQI (US)
26AQI (US)
15th February 2026
24AQI (US)
24AQI (US)
16th February 2026
26AQI (US)
26AQI (US)
17th February 2026
32AQI (US)
32AQI (US)
18th February 2026
26AQI (US)
26AQI (US)
19th February 2026
24AQI (US)
24AQI (US)
20th February 2026
25AQI (US)
25AQI (US)
21st February 2026
28AQI (US)
28AQI (US)
22nd February 2026
26AQI (US)
26AQI (US)
23rd February 2026
26AQI (US)
26AQI (US)
24th February 2026
34AQI (US)
34AQI (US)
25th February 2026
31AQI (US)
31AQI (US)
26th February 2026
25AQI (US)
25AQI (US)
27th February 2026
22AQI (US)
22AQI (US)
28th February 2026
26AQI (US)
26AQI (US)
1st March 2026
24AQI (US)
24AQI (US)
2nd March 2026
25AQI (US)
25AQI (US)
3rd March 2026
28AQI (US)
28AQI (US)
4th March 2026
29AQI (US)
29AQI (US)
5th March 2026
38AQI (US)
38AQI (US)
6th March 2026
28AQI (US)
28AQI (US)
7th March 2026
30AQI (US)
30AQI (US)
8th March 2026
30AQI (US)
30AQI (US)
9th March 2026
34AQI (US)
34AQI (US)
10th March 2026
23AQI (US)
23AQI (US)
11th March 2026
27AQI (US)
27AQI (US)
12th March 2026
34AQI (US)
34AQI (US)
13th March 2026
32AQI (US)
32AQI (US)
14th March 2026
29AQI (US)
29AQI (US)
15th March 2026
26AQI (US)
26AQI (US)
16th March 2026
23AQI (US)
23AQI (US)
17th March 2026
20AQI (US)
20AQI (US)
18th March 2026
34AQI (US)
34AQI (US)
19th March 2026
26AQI (US)
26AQI (US)
20th March 2026
25AQI (US)
25AQI (US)
21st March 2026
30AQI (US)
30AQI (US)
22nd March 2026
23AQI (US)
23AQI (US)
23rd March 2026
22AQI (US)
22AQI (US)
24th March 2026
22AQI (US)
22AQI (US)
25th March 2026
27AQI (US)
27AQI (US)
26th March 2026
28AQI (US)
28AQI (US)
27th March 2026
23AQI (US)
23AQI (US)
28th March 2026
23AQI (US)
23AQI (US)
29th March 2026
30AQI (US)
30AQI (US)
30th March 2026
26AQI (US)
26AQI (US)
31st March 2026
25AQI (US)
25AQI (US)
1st April 2026
26AQI (US)
26AQI (US)
2nd April 2026
31AQI (US)
31AQI (US)
3rd April 2026
25AQI (US)
25AQI (US)
4th April 2026
18AQI (US)
18AQI (US)
5th April 2026
21AQI (US)
21AQI (US)
6th April 2026
17AQI (US)
17AQI (US)
7th April 2026
23AQI (US)
23AQI (US)
8th April 2026
16AQI (US)
16AQI (US)
9th April 2026
19AQI (US)
19AQI (US)
10th April 2026
17AQI (US)
17AQI (US)
11th April 2026
18AQI (US)
18AQI (US)
12th April 2026
32AQI (US)
32AQI (US)
13th April 2026
30AQI (US)
30AQI (US)
14th April 2026
28AQI (US)
28AQI (US)
15th April 2026
30AQI (US)
30AQI (US)
16th April 2026
26AQI (US)
26AQI (US)
17th April 2026
18th April 2026
26AQI (US)
26AQI (US)
19th April 2026
21AQI (US)
21AQI (US)
20th April 2026
23AQI (US)
23AQI (US)
21st April 2026
25AQI (US)
25AQI (US)
22nd April 2026
23rd April 2026
24AQI (US)
24AQI (US)
24th April 2026
26AQI (US)
26AQI (US)
25th April 2026
33AQI (US)
33AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
27AQI (US)
27AQI (US)
28th April 2026
18AQI (US)
18AQI (US)
29th April 2026
18AQI (US)
18AQI (US)
30th April 2026
17AQI (US)
17AQI (US)
1st May 2026
19AQI (US)
19AQI (US)
2nd May 2026
16AQI (US)
16AQI (US)
3rd May 2026
15AQI (US)
15AQI (US)
4th May 2026
21AQI (US)
21AQI (US)
5th May 2026
20AQI (US)
20AQI (US)
6th May 2026
23AQI (US)
23AQI (US)
7th May 2026
17AQI (US)
17AQI (US)
8th May 2026
17AQI (US)
17AQI (US)
9th May 2026
10th May 2026
15AQI (US)
15AQI (US)
11th May 2026
20AQI (US)
20AQI (US)
12th May 2026
17AQI (US)
17AQI (US)
13th May 2026
34AQI (US)
34AQI (US)
14th May 2026
19AQI (US)
19AQI (US)
15th May 2026
17AQI (US)
17AQI (US)
16th May 2026
25AQI (US)
25AQI (US)
17th May 2026
30AQI (US)
30AQI (US)
18th May 2026
27AQI (US)
27AQI (US)
19th May 2026
24AQI (US)
24AQI (US)
20th May 2026
18AQI (US)
18AQI (US)
21st May 2026
26AQI (US)
26AQI (US)
22nd May 2026
23AQI (US)
23AQI (US)
23rd May 2026
23AQI (US)
23AQI (US)
24th May 2026
19AQI (US)
19AQI (US)
25th May 2026
19AQI (US)
19AQI (US)
26th May 2026
17AQI (US)
17AQI (US)
27th May 2026
21AQI (US)
21AQI (US)
28th May 2026
28AQI (US)
28AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
25AQI (US)
25AQI (US)
31st May 2026
29AQI (US)
29AQI (US)
1st June 2026
24AQI (US)
24AQI (US)
2nd June 2026
20AQI (US)
20AQI (US)
3rd June 2026
20AQI (US)
20AQI (US)
4th June 2026
21AQI (US)
21AQI (US)
5th June 2026
20AQI (US)
20AQI (US)
6th June 2026
16AQI (US)
16AQI (US)
7th June 2026
14AQI (US)
14AQI (US)
8th June 2026
23AQI (US)
23AQI (US)
9th June 2026
19AQI (US)
19AQI (US)
10th June 2026
18AQI (US)
18AQI (US)
11th June 2026
18AQI (US)
18AQI (US)
12th June 2026
18AQI (US)
18AQI (US)
13th June 2026
24AQI (US)
24AQI (US)
14th June 2026
19AQI (US)
19AQI (US)
15th June 2026
21AQI (US)
21AQI (US)
16th June 2026
32AQI (US)
32AQI (US)
17th June 2026
25AQI (US)
25AQI (US)
18th June 2026
15AQI (US)
15AQI (US)
19th June 2026
17AQI (US)
17AQI (US)
20th June 2026
19AQI (US)
19AQI (US)
21st June 2026
13AQI (US)
13AQI (US)
22nd June 2026
19AQI (US)
19AQI (US)
23rd June 2026
21AQI (US)
21AQI (US)
24th June 2026
16AQI (US)
16AQI (US)
25th June 2026
16AQI (US)
16AQI (US)
26th June 2026
15AQI (US)
15AQI (US)
27th June 2026
15AQI (US)
15AQI (US)
28th June 2026
20AQI (US)
20AQI (US)
29th June 2026
36AQI (US)
36AQI (US)
30th June 2026
68AQI (US)
68AQI (US)
1st July 2026
24AQI (US)
24AQI (US)
2nd July 2026
17AQI (US)
17AQI (US)
3rd July 2026
19AQI (US)
19AQI (US)
4th July 2026
30AQI (US)
30AQI (US)
5th July 2026
34AQI (US)
34AQI (US)
6th July 2026
17AQI (US)
17AQI (US)
7th July 2026
15AQI (US)
15AQI (US)
8th July 2026
22AQI (US)
22AQI (US)
9th July 2026
28AQI (US)
28AQI (US)
10th July 2026
24AQI (US)
24AQI (US)
11th July 2026
16AQI (US)
16AQI (US)
12th July 2026
22AQI (US)
22AQI (US)
13th July 2026
21AQI (US)
21AQI (US)
14th July 2026
23AQI (US)
23AQI (US)
15th July 2026
24AQI (US)
24AQI (US)
16th July 2026
28AQI (US)
28AQI (US)
17th July 2026
27AQI (US)
27AQI (US)
18th July 2026
33AQI (US)
33AQI (US)
19th July 2026
33AQI (US)
33AQI (US)
20th July 2026
29AQI (US)
29AQI (US)
21st July 2026
28AQI (US)
28AQI (US)
22nd July 2026
30AQI (US)
30AQI (US)
23rd July 2026
34AQI (US)
34AQI (US)
24th July 2026
33AQI (US)
33AQI (US)
25th July 2026
32AQI (US)
32AQI (US)
26th July 2026
38AQI (US)
38AQI (US)
27th July 2026
70AQI (US)
70AQI (US)
28th July 2026
62AQI (US)
62AQI (US)
29th July 2026
54AQI (US)
54AQI (US)
30th July 2026
42AQI (US)
42AQI (US)
31st July 2026
34AQI (US)
34AQI (US)
1st August 2026
40AQI (US)
40AQI (US)
2nd August 2026
51AQI (US)
51AQI (US)
3rd August 2026
58AQI (US)
58AQI (US)
4th August 2026
38AQI (US)
38AQI (US)
5th August 2026
43AQI (US)
43AQI (US)
6th August 2026
59AQI (US)
59AQI (US)
7th August 2026
85AQI (US)
85AQI (US)
8th August 2026
92AQI (US)
92AQI (US)
9th August 2026
66AQI (US)
66AQI (US)
10th August 2026
62AQI (US)
62AQI (US)
11th August 2026
61AQI (US)
61AQI (US)
12th August 2026
54AQI (US)
54AQI (US)
13th August 2026
33AQI (US)
33AQI (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
29AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
22AQI (US)
21AQI (US)
30AQI (US)
57AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202628AQI (US)
31
28
31
28
30
29
1
28
3
4
9
209
13
Highest AQI (US) recorded in
August57AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202528AQI (US)
27
4
28
31
30
31
30
31
28
3
23
7
31
30
31
351
14
Highest AQI (US) recorded in
January36AQI (US)
Lowest AQI (US) recorded in
March20AQI (US)
202434AQI (US)
16
15
28
1
29
2
30
31
29
15
14
2
22
9
22
5
1
2
25
5
1
30
25
6
302
57
4
2
Highest AQI (US) recorded in
July54AQI (US)
Lowest AQI (US) recorded in
May19AQI (US)
202330AQI (US)
21
10
20
8
30
1
30
27
2
2
30
29
2
25
6
30
30
1
23
6
16
15
311
51
2
Highest AQI (US) recorded in
December49AQI (US)
Lowest AQI (US) recorded in
June16AQI (US)
202231AQI (US)
13
16
20
1
31
25
31
30
18
1
1
17
4
8
30
1
21
9
20
11
257
43
8
Highest AQI (US) recorded in
September58AQI (US)
Lowest AQI (US) recorded in
May14AQI (US)
202138AQI (US)
28
1
26
2
30
1
30
30
30
4
19
8
13
13
4
1
17
7
6
29
2
29
1
30
296
46
18
1
Highest AQI (US) recorded in
July83AQI (US)
Lowest AQI (US) recorded in
December21AQI (US)
202030AQI (US)
11
20
18
30
30
1
23
6
2
20
5
2
3
25
5
26
4
21
10
224
31
4
3
Highest AQI (US) recorded in
September50AQI (US)
Lowest AQI (US) recorded in
May12AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2021(Avg.)
38AQI (US)Least Polluted Year Recorded
2025(Avg.)
28AQI (US)Butte's annual 2026 AQI (US) (28) shows an average percentage change of -11.1% (improved AQI (US)) compared to previous years: 2020 (30), 2021 (38), 2022 (31), 2023 (30), 2024 (34), 2025 (28).
