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
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
15th Aug 2021
152AQILowest AQI recorded on
22nd Aug 2023
15AQISame Day Analysis (11th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 21 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Butte, Montana, United States
AQI
Day
Night
.
6 AM11th Aug 2025
9 PM
5 AM12th Aug 2025
Day time
Avg. Highest Time
12PM11th Aug
28AQI
Avg. Lowest Time
10AM11th Aug
16AQI
Night time
Avg. Highest Time
11PM11th Aug
22AQI
Avg. Lowest Time
9PM11th Aug
18AQI
In the last 24 hours,
Butte's AQI reached its highest point of 28 at 12 PM during the Day, while the lowest point, 16, was recorded at 10 AM during the Day between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Butte, Montana, United States
JulAug
13th - 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 - 10th10th - 11th11th - 12th12th
Day
Night
13th Jul 2025386 AMAQI
13th Jul 2025277 AMAQI
13th Jul 2025258 AMAQI
13th Jul 2025249 AMAQI
13th Jul 20252410 AMAQI
13th Jul 20252411 AMAQI
13th Jul 20252912 PMAQI
13th Jul 2025291 PMAQI
13th Jul 2025282 PMAQI
13th Jul 2025253 PMAQI
13th Jul 2025274 PMAQI
13th Jul 2025275 PMAQI
13th Jul 2025296 PMAQI
13th Jul 2025307 PMAQI
13th Jul 2025308 PMAQI
13th Jul 2025279 PMAQI
13th Jul 20252810 PMAQI
13th Jul 20252811 PMAQI
14th Jul 20253012 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025212 AMAQI
14th Jul 2025243 AMAQI
14th Jul 2025244 AMAQI
14th Jul 2025225 AMAQI
21°C13/29°C
14th Jul 2025216 AMAQI
14th Jul 2025267 AMAQI
14th Jul 2025258 AMAQI
14th Jul 2025269 AMAQI
14th Jul 20252610 AMAQI
14th Jul 20253011 AMAQI
14th Jul 20253712 PMAQI
14th Jul 2025341 PMAQI
14th Jul 2025352 PMAQI
14th Jul 2025303 PMAQI
14th Jul 2025274 PMAQI
14th Jul 2025255 PMAQI
14th Jul 2025266 PMAQI
14th Jul 2025277 PMAQI
14th Jul 2025268 PMAQI
14th Jul 2025299 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20252611 PMAQI
15th Jul 20252212 AMAQI
15th Jul 2025281 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025263 AMAQI
15th Jul 2025214 AMAQI
15th Jul 2025195 AMAQI
23°C15/31°C
15th Jul 2025166 AMAQI
15th Jul 2025187 AMAQI
15th Jul 2025198 AMAQI
15th Jul 2025209 AMAQI
15th Jul 20251810 AMAQI
15th Jul 20252111 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025211 PMAQI
15th Jul 2025182 PMAQI
15th Jul 2025213 PMAQI
15th Jul 2025214 PMAQI
15th Jul 2025215 PMAQI
15th Jul 2025236 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025188 PMAQI
15th Jul 2025219 PMAQI
15th Jul 20252010 PMAQI
15th Jul 20252111 PMAQI
16th Jul 20252112 AMAQI
16th Jul 2025211 AMAQI
16th Jul 2025212 AMAQI
16th Jul 2025223 AMAQI
16th Jul 2025244 AMAQI
16th Jul 2025265 AMAQI
13°C9/15°C
16th Jul 2025286 AMAQI
16th Jul 2025327 AMAQI
16th Jul 2025328 AMAQI
16th Jul 2025249 AMAQI
16th Jul 20252610 AMAQI
16th Jul 20252311 AMAQI
16th Jul 20252312 PMAQI
16th Jul 2025221 PMAQI
16th Jul 2025232 PMAQI
16th Jul 2025283 PMAQI
16th Jul 2025314 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025346 PMAQI
16th Jul 2025297 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025359 PMAQI
16th Jul 20253910 PMAQI
16th Jul 20253411 PMAQI
17th Jul 20253112 AMAQI
17th Jul 2025311 AMAQI
17th Jul 2025262 AMAQI
17th Jul 2025273 AMAQI
17th Jul 2025304 AMAQI
17th Jul 2025275 AMAQI
13°C7/21°C
17th Jul 2025266 AMAQI
17th Jul 2025307 AMAQI
17th Jul 2025298 AMAQI
17th Jul 2025309 AMAQI
17th Jul 20252810 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20253912 PMAQI
17th Jul 2025361 PMAQI
17th Jul 2025422 PMAQI
17th Jul 2025403 PMAQI
17th Jul 2025354 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025297 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025369 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253211 PMAQI
18th Jul 20253312 AMAQI
18th Jul 2025351 AMAQI
18th Jul 2025392 AMAQI
18th Jul 2025333 AMAQI
18th Jul 2025344 AMAQI
18th Jul 2025375 AMAQI
19°C9/27°C
18th Jul 2025356 AMAQI
18th Jul 2025357 AMAQI
18th Jul 2025378 AMAQI
18th Jul 2025369 AMAQI
18th Jul 20253610 AMAQI
18th Jul 20254011 AMAQI
18th Jul 20254312 PMAQI
18th Jul 2025431 PMAQI
18th Jul 2025422 PMAQI
18th Jul 2025443 PMAQI
18th Jul 2025474 PMAQI
18th Jul 2025465 PMAQI
18th Jul 2025466 PMAQI
18th Jul 2025397 PMAQI
18th Jul 2025388 PMAQI
18th Jul 2025359 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20254011 PMAQI
19th Jul 20254012 AMAQI
19th Jul 2025411 AMAQI
19th Jul 2025442 AMAQI
19th Jul 2025443 AMAQI
19th Jul 2025384 AMAQI
19th Jul 2025385 AMAQI
19°C10/29°C
19th Jul 2025456 AMAQI
19th Jul 2025487 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025389 AMAQI
19th Jul 20253810 AMAQI
19th Jul 20253811 AMAQI
19th Jul 20254012 PMAQI
19th Jul 2025421 PMAQI
19th Jul 2025422 PMAQI
19th Jul 2025403 PMAQI
19th Jul 2025404 PMAQI
19th Jul 2025405 PMAQI
19th Jul 2025386 PMAQI
19th Jul 2025397 PMAQI
19th Jul 2025418 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253211 PMAQI
20th Jul 20252612 AMAQI
20th Jul 2025261 AMAQI
20th Jul 2025242 AMAQI
20th Jul 2025253 AMAQI
20th Jul 2025224 AMAQI
20th Jul 2025225 AMAQI
19°C12/27°C
20th Jul 2025226 AMAQI
20th Jul 2025217 AMAQI
20th Jul 2025248 AMAQI
20th Jul 2025229 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252712 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025312 PMAQI
20th Jul 2025323 PMAQI
20th Jul 2025304 PMAQI
20th Jul 2025305 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20253910 PMAQI
20th Jul 20254011 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025341 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025283 AMAQI
21st Jul 2025284 AMAQI
21st Jul 2025285 AMAQI
18°C11/25°C
21st Jul 2025286 AMAQI
21st Jul 2025287 AMAQI
21st Jul 2025278 AMAQI
21st Jul 2025279 AMAQI
21st Jul 20252710 AMAQI
21st Jul 20252911 AMAQI
21st Jul 20253212 PMAQI
21st Jul 2025291 PMAQI
21st Jul 2025302 PMAQI
21st Jul 2025383 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025365 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025337 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20253310 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025281 AMAQI
22nd Jul 2025262 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025264 AMAQI
22nd Jul 2025195 AMAQI
17°C10/26°C
22nd Jul 2025186 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025238 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252311 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025282 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025245 PMAQI
22nd Jul 2025226 PMAQI
22nd Jul 2025237 PMAQI
22nd Jul 2025258 PMAQI
22nd Jul 2025269 PMAQI
22nd Jul 20253010 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025261 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025193 AMAQI
23rd Jul 2025194 AMAQI
23rd Jul 2025165 AMAQI
16°C10/23°C
23rd Jul 2025146 AMAQI
23rd Jul 2025187 AMAQI
23rd Jul 2025178 AMAQI
23rd Jul 2025179 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20251911 AMAQI
23rd Jul 20252212 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025233 PMAQI
23rd Jul 2025214 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025217 PMAQI
23rd Jul 2025258 PMAQI
23rd Jul 2025329 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20253011 PMAQI
24th Jul 20253012 AMAQI
24th Jul 2025291 AMAQI
24th Jul 2025302 AMAQI
24th Jul 2025293 AMAQI
24th Jul 2025284 AMAQI
24th Jul 2025255 AMAQI
16°C8/24°C
24th Jul 2025226 AMAQI
24th Jul 2025207 AMAQI
24th Jul 2025238 AMAQI
24th Jul 2025279 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253511 AMAQI
24th Jul 20254012 PMAQI
24th Jul 2025401 PMAQI
24th Jul 2025362 PMAQI
24th Jul 2025333 PMAQI
24th Jul 2025304 PMAQI
24th Jul 2025285 PMAQI
24th Jul 2025256 PMAQI
24th Jul 2025287 PMAQI
24th Jul 2025298 PMAQI
24th Jul 2025309 PMAQI
24th Jul 20253310 PMAQI
24th Jul 20253211 PMAQI
25th Jul 20253312 AMAQI
25th Jul 2025331 AMAQI
25th Jul 2025352 AMAQI
25th Jul 2025373 AMAQI
25th Jul 2025364 AMAQI
25th Jul 2025385 AMAQI
18°C9/27°C
25th Jul 2025386 AMAQI
25th Jul 2025377 AMAQI
25th Jul 2025388 AMAQI
25th Jul 2025399 AMAQI
25th Jul 20253410 AMAQI
25th Jul 20254011 AMAQI
25th Jul 20254712 PMAQI
25th Jul 2025471 PMAQI
25th Jul 2025442 PMAQI
25th Jul 2025383 PMAQI
25th Jul 2025364 PMAQI
25th Jul 2025355 PMAQI
25th Jul 2025286 PMAQI
25th Jul 2025347 PMAQI
25th Jul 2025368 PMAQI
25th Jul 2025429 PMAQI
25th Jul 20253210 PMAQI
25th Jul 20253411 PMAQI
26th Jul 20253412 AMAQI
26th Jul 2025381 AMAQI
26th Jul 2025382 AMAQI
26th Jul 2025343 AMAQI
26th Jul 2025344 AMAQI
26th Jul 2025335 AMAQI
20°C12/29°C
26th Jul 2025326 AMAQI
26th Jul 2025377 AMAQI
26th Jul 2025418 AMAQI
26th Jul 2025419 AMAQI
26th Jul 20254110 AMAQI
26th Jul 20254011 AMAQI
26th Jul 20254212 PMAQI
26th Jul 2025421 PMAQI
26th Jul 2025362 PMAQI
26th Jul 2025363 PMAQI
26th Jul 2025384 PMAQI
26th Jul 2025285 PMAQI
26th Jul 2025276 PMAQI
26th Jul 2025287 PMAQI
26th Jul 2025338 PMAQI
26th Jul 2025299 PMAQI
26th Jul 20253010 PMAQI
26th Jul 20252811 PMAQI
27th Jul 20252512 AMAQI
27th Jul 2025271 AMAQI
27th Jul 2025242 AMAQI
27th Jul 2025273 AMAQI
27th Jul 2025214 AMAQI
27th Jul 2025215 AMAQI
18°C11/28°C
27th Jul 2025236 AMAQI
27th Jul 2025237 AMAQI
27th Jul 2025248 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252510 AMAQI
27th Jul 20252611 AMAQI
27th Jul 20253212 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025293 PMAQI
27th Jul 2025334 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025297 PMAQI
27th Jul 2025278 PMAQI
27th Jul 2025289 PMAQI
27th Jul 20253110 PMAQI
27th Jul 20253011 PMAQI
28th Jul 20252412 AMAQI
28th Jul 2025281 AMAQI
28th Jul 2025282 AMAQI
28th Jul 2025243 AMAQI
28th Jul 2025224 AMAQI
28th Jul 2025215 AMAQI
17°C10/28°C
28th Jul 2025216 AMAQI
28th Jul 2025247 AMAQI
28th Jul 2025238 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20252610 AMAQI
28th Jul 20252611 AMAQI
28th Jul 20252612 PMAQI
28th Jul 2025291 PMAQI
28th Jul 2025332 PMAQI
28th Jul 2025333 PMAQI
28th Jul 2025424 PMAQI
28th Jul 2025325 PMAQI
28th Jul 2025336 PMAQI
28th Jul 2025277 PMAQI
28th Jul 2025288 PMAQI
28th Jul 2025329 PMAQI
28th Jul 20252610 PMAQI
28th Jul 20253711 PMAQI
29th Jul 20253412 AMAQI
29th Jul 2025321 AMAQI
29th Jul 2025352 AMAQI
29th Jul 2025343 AMAQI
29th Jul 2025294 AMAQI
29th Jul 2025325 AMAQI
18°C11/28°C
29th Jul 2025276 AMAQI
29th Jul 2025347 AMAQI
29th Jul 2025328 AMAQI
29th Jul 2025339 AMAQI
29th Jul 20253010 AMAQI
29th Jul 20253211 AMAQI
29th Jul 20253012 PMAQI
29th Jul 2025311 PMAQI
29th Jul 2025322 PMAQI
29th Jul 2025333 PMAQI
29th Jul 2025324 PMAQI
29th Jul 2025325 PMAQI
29th Jul 2025306 PMAQI
29th Jul 2025327 PMAQI
29th Jul 2025338 PMAQI
29th Jul 2025389 PMAQI
29th Jul 20253610 PMAQI
29th Jul 20253411 PMAQI
30th Jul 20252912 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025213 AMAQI
30th Jul 2025204 AMAQI
30th Jul 2025215 AMAQI
17°C10/28°C
30th Jul 2025196 AMAQI
30th Jul 2025247 AMAQI
30th Jul 2025218 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20252210 AMAQI
30th Jul 20252011 AMAQI
30th Jul 20252212 PMAQI
30th Jul 2025211 PMAQI
30th Jul 2025242 PMAQI
30th Jul 2025233 PMAQI
30th Jul 2025234 PMAQI
30th Jul 2025235 PMAQI
30th Jul 2025236 PMAQI
30th Jul 2025237 PMAQI
30th Jul 2025238 PMAQI
30th Jul 2025259 PMAQI
30th Jul 20252410 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252412 AMAQI
31st Jul 2025211 AMAQI
31st Jul 2025242 AMAQI
31st Jul 2025303 AMAQI
31st Jul 2025284 AMAQI
31st Jul 2025315 AMAQI
16°C11/24°C
31st Jul 2025326 AMAQI
31st Jul 2025377 AMAQI
31st Jul 2025348 AMAQI
31st Jul 2025379 AMAQI
31st Jul 20253410 AMAQI
31st Jul 20253411 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025361 PMAQI
31st Jul 2025362 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025354 PMAQI
31st Jul 2025405 PMAQI
31st Jul 2025426 PMAQI
31st Jul 2025347 PMAQI
31st Jul 2025338 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20253011 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025271 AMAQI
1st Aug 2025302 AMAQI
1st Aug 2025333 AMAQI
1st Aug 2025324 AMAQI
1st Aug 2025245 AMAQI
19°C12/27°C
1st Aug 2025256 AMAQI
1st Aug 2025267 AMAQI
1st Aug 2025248 AMAQI
1st Aug 2025219 AMAQI
1st Aug 20252110 AMAQI
1st Aug 20252511 AMAQI
1st Aug 20253212 PMAQI
1st Aug 2025421 PMAQI
1st Aug 2025422 PMAQI
1st Aug 2025363 PMAQI
1st Aug 2025384 PMAQI
1st Aug 2025335 PMAQI
1st Aug 2025306 PMAQI
1st Aug 2025307 PMAQI
1st Aug 2025328 PMAQI
1st Aug 2025349 PMAQI
1st Aug 20253510 PMAQI
1st Aug 20253411 PMAQI
2nd Aug 20253612 AMAQI
2nd Aug 2025321 AMAQI
2nd Aug 2025292 AMAQI
2nd Aug 2025243 AMAQI
2nd Aug 2025224 AMAQI
2nd Aug 2025225 AMAQI
16°C11/25°C
2nd Aug 2025226 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025208 AMAQI
2nd Aug 2025209 AMAQI
2nd Aug 20252210 AMAQI
2nd Aug 20252711 AMAQI
2nd Aug 20253212 PMAQI
2nd Aug 2025341 PMAQI
2nd Aug 2025332 PMAQI
2nd Aug 2025283 PMAQI
2nd Aug 2025254 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025236 PMAQI
2nd Aug 2025287 PMAQI
2nd Aug 2025318 PMAQI
2nd Aug 2025329 PMAQI
2nd Aug 20253410 PMAQI
2nd Aug 20252611 PMAQI
3rd Aug 20253012 AMAQI
3rd Aug 2025311 AMAQI
3rd Aug 2025322 AMAQI
3rd Aug 2025303 AMAQI
3rd Aug 2025304 AMAQI
3rd Aug 2025245 AMAQI
17°C10/24°C
3rd Aug 2025246 AMAQI
3rd Aug 2025267 AMAQI
3rd Aug 2025238 AMAQI
3rd Aug 2025209 AMAQI
3rd Aug 20252110 AMAQI
3rd Aug 20252811 AMAQI
3rd Aug 20252912 PMAQI
3rd Aug 2025321 PMAQI
3rd Aug 2025302 PMAQI
3rd Aug 2025263 PMAQI
3rd Aug 2025284 PMAQI
3rd Aug 2025295 PMAQI
3rd Aug 2025246 PMAQI
3rd Aug 2025287 PMAQI
3rd Aug 2025258 PMAQI
3rd Aug 2025259 PMAQI
3rd Aug 20252610 PMAQI
3rd Aug 20252311 PMAQI
4th Aug 20252412 AMAQI
4th Aug 2025251 AMAQI
4th Aug 2025272 AMAQI
4th Aug 2025223 AMAQI
4th Aug 2025224 AMAQI
4th Aug 2025215 AMAQI
18°C10/25°C
4th Aug 2025226 AMAQI
4th Aug 2025257 AMAQI
4th Aug 2025268 AMAQI
4th Aug 2025239 AMAQI
4th Aug 20252010 AMAQI
4th Aug 20252411 AMAQI
4th Aug 20252312 PMAQI
4th Aug 2025281 PMAQI
4th Aug 2025292 PMAQI
4th Aug 2025293 PMAQI
4th Aug 2025274 PMAQI
4th Aug 2025345 PMAQI
4th Aug 2025326 PMAQI
4th Aug 2025257 PMAQI
4th Aug 2025308 PMAQI
4th Aug 2025319 PMAQI
4th Aug 20253010 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20252212 AMAQI
5th Aug 2025221 AMAQI
5th Aug 2025232 AMAQI
5th Aug 2025223 AMAQI
5th Aug 2025224 AMAQI
5th Aug 2025215 AMAQI
17°C10/26°C
5th Aug 2025206 AMAQI
5th Aug 2025207 AMAQI
5th Aug 2025218 AMAQI
5th Aug 2025229 AMAQI
5th Aug 20252410 AMAQI
5th Aug 20252311 AMAQI
5th Aug 20253412 PMAQI
5th Aug 2025351 PMAQI
5th Aug 2025352 PMAQI
5th Aug 2025383 PMAQI
5th Aug 2025364 PMAQI
5th Aug 2025335 PMAQI
5th Aug 2025306 PMAQI
5th Aug 2025277 PMAQI
5th Aug 2025248 PMAQI
5th Aug 2025239 PMAQI
5th Aug 20252610 PMAQI
5th Aug 20252611 PMAQI
6th Aug 20253012 AMAQI
6th Aug 2025281 AMAQI
6th Aug 2025262 AMAQI
6th Aug 2025283 AMAQI
6th Aug 2025244 AMAQI
6th Aug 2025245 AMAQI
15°C6/23°C
6th Aug 2025216 AMAQI
6th Aug 2025237 AMAQI
6th Aug 2025248 AMAQI
6th Aug 2025219 AMAQI
6th Aug 20252510 AMAQI
6th Aug 20253111 AMAQI
6th Aug 20253812 PMAQI
6th Aug 2025381 PMAQI
6th Aug 2025372 PMAQI
6th Aug 2025283 PMAQI
6th Aug 2025234 PMAQI
6th Aug 2025235 PMAQI
6th Aug 2025206 PMAQI
6th Aug 2025267 PMAQI
6th Aug 2025288 PMAQI
6th Aug 2025269 PMAQI
6th Aug 20252410 PMAQI
6th Aug 20252411 PMAQI
7th Aug 20252612 AMAQI
7th Aug 2025241 AMAQI
7th Aug 2025262 AMAQI
7th Aug 2025263 AMAQI
7th Aug 2025254 AMAQI
7th Aug 2025275 AMAQI
19°C11/28°C
7th Aug 2025266 AMAQI
7th Aug 2025307 AMAQI
7th Aug 2025318 AMAQI
7th Aug 2025299 AMAQI
7th Aug 20252610 AMAQI
7th Aug 20252811 AMAQI
7th Aug 20252912 PMAQI
7th Aug 2025351 PMAQI
7th Aug 2025312 PMAQI
7th Aug 2025293 PMAQI
7th Aug 2025274 PMAQI
7th Aug 2025305 PMAQI
7th Aug 2025226 PMAQI
7th Aug 2025247 PMAQI
7th Aug 2025248 PMAQI
7th Aug 2025199 PMAQI
7th Aug 20252010 PMAQI
7th Aug 20252011 PMAQI
8th Aug 20252012 AMAQI
8th Aug 2025161 AMAQI
8th Aug 2025182 AMAQI
8th Aug 2025163 AMAQI
8th Aug 2025144 AMAQI
8th Aug 2025145 AMAQI
14°C7/21°C
8th Aug 2025156 AMAQI
8th Aug 2025157 AMAQI
8th Aug 2025158 AMAQI
8th Aug 2025169 AMAQI
8th Aug 20251610 AMAQI
8th Aug 20251611 AMAQI
8th Aug 20251712 PMAQI
8th Aug 2025161 PMAQI
8th Aug 2025172 PMAQI
8th Aug 2025203 PMAQI
8th Aug 2025214 PMAQI
8th Aug 2025205 PMAQI
8th Aug 2025186 PMAQI
8th Aug 2025177 PMAQI
8th Aug 2025158 PMAQI
8th Aug 2025189 PMAQI
8th Aug 20251610 PMAQI
8th Aug 20251511 PMAQI
9th Aug 20251612 AMAQI
9th Aug 2025181 AMAQI
9th Aug 2025152 AMAQI
9th Aug 2025173 AMAQI
9th Aug 2025174 AMAQI
9th Aug 2025175 AMAQI
11°C3/17°C
9th Aug 2025176 AMAQI
9th Aug 2025147 AMAQI
9th Aug 2025148 AMAQI
9th Aug 2025169 AMAQI
9th Aug 20251610 AMAQI
9th Aug 20251611 AMAQI
9th Aug 20251712 PMAQI
9th Aug 2025201 PMAQI
9th Aug 2025232 PMAQI
9th Aug 2025193 PMAQI
9th Aug 2025184 PMAQI
9th Aug 2025185 PMAQI
9th Aug 2025216 PMAQI
9th Aug 2025167 PMAQI
9th Aug 2025168 PMAQI
9th Aug 2025189 PMAQI
9th Aug 20251910 PMAQI
9th Aug 20251711 PMAQI
10th Aug 20251612 AMAQI
10th Aug 2025191 AMAQI
10th Aug 2025202 AMAQI
10th Aug 2025193 AMAQI
10th Aug 2025184 AMAQI
10th Aug 2025175 AMAQI
13°C6/21°C
10th Aug 2025166 AMAQI
10th Aug 2025187 AMAQI
10th Aug 2025178 AMAQI
10th Aug 2025179 AMAQI
10th Aug 20251810 AMAQI
10th Aug 20253411 AMAQI
10th Aug 20252512 PMAQI
10th Aug 2025221 PMAQI
10th Aug 2025232 PMAQI
10th Aug 2025253 PMAQI
10th Aug 2025224 PMAQI
10th Aug 2025205 PMAQI
10th Aug 2025206 PMAQI
10th Aug 2025197 PMAQI
10th Aug 2025198 PMAQI
10th Aug 2025179 PMAQI
10th Aug 20251810 PMAQI
10th Aug 20251911 PMAQI
11th Aug 20252312 AMAQI
11th Aug 2025221 AMAQI
11th Aug 2025182 AMAQI
11th Aug 2025203 AMAQI
11th Aug 2025184 AMAQI
11th Aug 2025195 AMAQI
16°C9/24°C
11th Aug 2025206 AMAQI
11th Aug 2025167 AMAQI
11th Aug 2025188 AMAQI
11th Aug 2025169 AMAQI
11th Aug 20251610 AMAQI
11th Aug 20252211 AMAQI
11th Aug 20252812 PMAQI
11th Aug 2025281 PMAQI
11th Aug 2025282 PMAQI
11th Aug 2025243 PMAQI
11th Aug 2025194 PMAQI
11th Aug 2025185 PMAQI
11th Aug 2025176 PMAQI
11th Aug 2025217 PMAQI
11th Aug 2025198 PMAQI
11th Aug 2025189 PMAQI
11th Aug 20252010 PMAQI
11th Aug 20252211 PMAQI
12th Aug 20252212 AMAQI
12th Aug 2025201 AMAQI
12th Aug 2025222 AMAQI
12th Aug 2025213 AMAQI
12th Aug 2025204 AMAQI
12th Aug 2025205 AMAQI
18°C11/26°C
12th Aug 2025196 AMAQI
6 AM12th Aug 2025207 AMAQI
12th Aug 2025188 AMAQI
12th Aug 2025189 AMAQI
1 PM
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
12 PM - 9 PM
29AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
6 AM
24AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 9 PM (Avg. 29), while the lowest AQI was between 6 AM to 6 AM (Avg. 24).
Night time
Avg. Highest Time
10 PM - 11 PM
29AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
12 AM - 5 AM
26AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 29), while the lowest AQI was between 12 AM to 5 AM (Avg. 26).
2025 Days Vs Air Quality
Butte, Montana, United States
2025
98%
219
2%
4
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Good
219 DaysModerate
4 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 224 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 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
32AQI
32AQI
2nd January 2025
35AQI
35AQI
3rd January 2025
41AQI
41AQI
4th January 2025
25AQI
25AQI
5th January 2025
37AQI
37AQI
6th January 2025
34AQI
34AQI
7th January 2025
29AQI
29AQI
8th January 2025
35AQI
35AQI
9th January 2025
25AQI
25AQI
10th January 2025
30AQI
30AQI
11th January 2025
22AQI
22AQI
12th January 2025
23AQI
23AQI
13th January 2025
24AQI
24AQI
14th January 2025
34AQI
34AQI
15th January 2025
49AQI
49AQI
16th January 2025
35AQI
35AQI
17th January 2025
24AQI
24AQI
18th January 2025
23AQI
23AQI
19th January 2025
25AQI
25AQI
20th January 2025
33AQI
33AQI
21st January 2025
34AQI
34AQI
22nd January 2025
27AQI
27AQI
23rd January 2025
51AQI
51AQI
24th January 2025
38AQI
38AQI
25th January 2025
31AQI
31AQI
26th January 2025
39AQI
39AQI
27th January 2025
49AQI
49AQI
28th January 2025
54AQI
54AQI
29th January 2025
59AQI
59AQI
30th January 2025
67AQI
67AQI
31st January 2025
45AQI
45AQI
1st February 2025
25AQI
25AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
26AQI
26AQI
4th February 2025
28AQI
28AQI
5th February 2025
27AQI
27AQI
6th February 2025
26AQI
26AQI
7th February 2025
27AQI
27AQI
8th February 2025
34AQI
34AQI
9th February 2025
35AQI
35AQI
10th February 2025
30AQI
30AQI
11th February 2025
41AQI
41AQI
12th February 2025
37AQI
37AQI
13th February 2025
45AQI
45AQI
14th February 2025
32AQI
32AQI
15th February 2025
18AQI
18AQI
16th February 2025
22AQI
22AQI
17th February 2025
31AQI
31AQI
18th February 2025
19AQI
19AQI
19th February 2025
26AQI
26AQI
20th February 2025
35AQI
35AQI
21st February 2025
22AQI
22AQI
22nd February 2025
21AQI
21AQI
23rd February 2025
14AQI
14AQI
24th February 2025
14AQI
14AQI
25th February 2025
13AQI
13AQI
26th February 2025
17AQI
17AQI
27th February 2025
21AQI
21AQI
28th February 2025
29AQI
29AQI
1st March 2025
32AQI
32AQI
2nd March 2025
32AQI
32AQI
3rd March 2025
22AQI
22AQI
4th March 2025
18AQI
18AQI
5th March 2025
17AQI
17AQI
6th March 2025
16AQI
16AQI
7th March 2025
14AQI
14AQI
8th March 2025
17AQI
17AQI
9th March 2025
18AQI
18AQI
10th March 2025
16AQI
16AQI
11th March 2025
19AQI
19AQI
12th March 2025
19AQI
19AQI
13th March 2025
19AQI
19AQI
14th March 2025
20AQI
20AQI
15th March 2025
19AQI
19AQI
16th March 2025
16AQI
16AQI
17th March 2025
18AQI
18AQI
18th March 2025
20AQI
20AQI
19th March 2025
24AQI
24AQI
20th March 2025
19AQI
19AQI
21st March 2025
15AQI
15AQI
22nd March 2025
17AQI
17AQI
23rd March 2025
17AQI
17AQI
24th March 2025
16AQI
16AQI
25th March 2025
19AQI
19AQI
26th March 2025
29AQI
29AQI
27th March 2025
28AQI
28AQI
28th March 2025
26AQI
26AQI
29th March 2025
19AQI
19AQI
30th March 2025
16AQI
16AQI
31st March 2025
20AQI
20AQI
1st April 2025
19AQI
19AQI
2nd April 2025
31AQI
31AQI
3rd April 2025
20AQI
20AQI
4th April 2025
18AQI
18AQI
5th April 2025
18AQI
18AQI
6th April 2025
28AQI
28AQI
7th April 2025
26AQI
26AQI
8th April 2025
17AQI
17AQI
9th April 2025
27AQI
27AQI
10th April 2025
41AQI
41AQI
11th April 2025
38AQI
38AQI
12th April 2025
22AQI
22AQI
13th April 2025
16AQI
16AQI
14th April 2025
25AQI
25AQI
15th April 2025
26AQI
26AQI
16th April 2025
37AQI
37AQI
17th April 2025
20AQI
20AQI
18th April 2025
18AQI
18AQI
19th April 2025
25AQI
25AQI
20th April 2025
18AQI
18AQI
21st April 2025
16AQI
16AQI
22nd April 2025
17AQI
17AQI
23rd April 2025
22AQI
22AQI
24th April 2025
25AQI
25AQI
25th April 2025
22AQI
22AQI
26th April 2025
22AQI
22AQI
27th April 2025
27AQI
27AQI
28th April 2025
21AQI
21AQI
29th April 2025
23AQI
23AQI
30th April 2025
18AQI
18AQI
1st May 2025
20AQI
20AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
40AQI
40AQI
4th May 2025
23AQI
23AQI
5th May 2025
18AQI
18AQI
6th May 2025
17AQI
17AQI
7th May 2025
21AQI
21AQI
8th May 2025
23AQI
23AQI
9th May 2025
24AQI
24AQI
10th May 2025
24AQI
24AQI
11th May 2025
19AQI
19AQI
12th May 2025
27AQI
27AQI
13th May 2025
18AQI
18AQI
14th May 2025
18AQI
18AQI
15th May 2025
16AQI
16AQI
16th May 2025
18AQI
18AQI
17th May 2025
15AQI
15AQI
18th May 2025
16AQI
16AQI
19th May 2025
19AQI
19AQI
20th May 2025
16AQI
16AQI
21st May 2025
17AQI
17AQI
22nd May 2025
19AQI
19AQI
23rd May 2025
19AQI
19AQI
24th May 2025
23AQI
23AQI
25th May 2025
24AQI
24AQI
26th May 2025
23AQI
23AQI
27th May 2025
20AQI
20AQI
28th May 2025
19AQI
19AQI
29th May 2025
23AQI
23AQI
30th May 2025
20AQI
20AQI
31st May 2025
24AQI
24AQI
1st June 2025
32AQI
32AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
18AQI
18AQI
4th June 2025
21AQI
21AQI
5th June 2025
23AQI
23AQI
6th June 2025
25AQI
25AQI
7th June 2025
28AQI
28AQI
8th June 2025
45AQI
45AQI
9th June 2025
41AQI
41AQI
10th June 2025
30AQI
30AQI
11th June 2025
24AQI
24AQI
12th June 2025
22AQI
22AQI
13th June 2025
24AQI
24AQI
14th June 2025
23AQI
23AQI
15th June 2025
27AQI
27AQI
16th June 2025
29AQI
29AQI
17th June 2025
26AQI
26AQI
18th June 2025
27AQI
27AQI
19th June 2025
27AQI
27AQI
20th June 2025
24AQI
24AQI
21st June 2025
17AQI
17AQI
22nd June 2025
16AQI
16AQI
23rd June 2025
17AQI
17AQI
24th June 2025
30AQI
30AQI
25th June 2025
29AQI
29AQI
26th June 2025
27AQI
27AQI
27th June 2025
24AQI
24AQI
28th June 2025
23AQI
23AQI
29th June 2025
21AQI
21AQI
30th June 2025
24AQI
24AQI
1st July 2025
34AQI
34AQI
2nd July 2025
36AQI
36AQI
3rd July 2025
29AQI
29AQI
4th July 2025
39AQI
39AQI
5th July 2025
44AQI
44AQI
6th July 2025
25AQI
25AQI
7th July 2025
28AQI
28AQI
8th July 2025
31AQI
31AQI
9th July 2025
29AQI
29AQI
10th July 2025
27AQI
27AQI
11th July 2025
24AQI
24AQI
12th July 2025
29AQI
29AQI
13th July 2025
28AQI
28AQI
14th July 2025
27AQI
27AQI
15th July 2025
22AQI
22AQI
16th July 2025
27AQI
27AQI
17th July 2025
31AQI
31AQI
18th July 2025
38AQI
38AQI
19th July 2025
40AQI
40AQI
20th July 2025
28AQI
28AQI
21st July 2025
31AQI
31AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
22AQI
22AQI
24th July 2025
30AQI
30AQI
25th July 2025
37AQI
37AQI
26th July 2025
34AQI
34AQI
27th July 2025
27AQI
27AQI
28th July 2025
28AQI
28AQI
29th July 2025
32AQI
32AQI
30th July 2025
23AQI
23AQI
31st July 2025
32AQI
32AQI
1st August 2025
30AQI
30AQI
2nd August 2025
27AQI
27AQI
3rd August 2025
27AQI
27AQI
4th August 2025
26AQI
26AQI
5th August 2025
26AQI
26AQI
6th August 2025
27AQI
27AQI
7th August 2025
26AQI
26AQI
8th August 2025
17AQI
17AQI
9th August 2025
17AQI
17AQI
10th August 2025
20AQI
20AQI
11th August 2025
21AQI
21AQI
36AQI
27AQI
20AQI
23AQI
21AQI
25AQI
30AQI
24AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202526AQI
27
4
28
31
30
31
30
31
11
219
4
Highest AQI recorded in
January36AQI
Lowest AQI recorded in
March20AQI
202434AQI
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 recorded in
July54AQI
Lowest AQI recorded in
May19AQI
202330AQI
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 recorded in
December49AQI
Lowest AQI recorded in
June16AQI
202232AQI
13
17
20
1
31
25
31
30
18
1
1
17
4
8
30
1
21
9
20
11
257
44
8
Highest AQI recorded in
September58AQI
Lowest AQI recorded in
May14AQI
202138AQI
28
2
26
2
30
1
30
30
30
4
19
8
13
13
4
1
17
7
6
29
2
29
1
30
296
47
18
1
Highest AQI recorded in
July83AQI
Lowest AQI recorded in
May21AQI
202030AQI
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 recorded in
September50AQI
Lowest AQI recorded in
May12AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
38AQILeast Polluted Year Recorded
2025(Avg.)
26AQIButte's annual 2025 AQI (26) shows an average percentage change of -20.1% (improved AQI) compared to previous years: 2020 (30), 2021 (38), 2022 (32), 2023 (30), 2024 (34).
