Reservoir Road, Boulder, Colorado, 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
Reservoir Road, Boulder, Colorado, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2025
71AQILowest AQI recorded on
3rd Aug 2025
26AQISame Day Analysis (6th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 71 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 6th Aug - 7th Aug 2025
Reservoir Road, Boulder, Colorado, United States
AQI
Day
Night
.
5 AM6th Aug 2025
8 PM
4 AM7th Aug 2025
Day time
Avg. Highest Time
6AM6th Aug
86AQI
Avg. Lowest Time
6PM6th Aug
53AQI
Night time
Avg. Highest Time
5AM6th Aug
89AQI
Avg. Lowest Time
9PM6th Aug
49AQI
In the last 24 hours,
Reservoir Road's AQI reached its highest point of 89 at 5 AM during the Night, while the lowest point, 49, was recorded at 9 PM during the Night between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Reservoir Road, Boulder, Colorado, United States
JulAug
08th - 09th09th - 10th10th - 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
Day
Night
8th Jul 2025335 AMAQI
8th Jul 2025306 AMAQI
8th Jul 2025307 AMAQI
8th Jul 2025308 AMAQI
8th Jul 2025329 AMAQI
8th Jul 20253110 AMAQI
8th Jul 20253411 AMAQI
8th Jul 20253612 PMAQI
8th Jul 2025331 PMAQI
8th Jul 2025312 PMAQI
8th Jul 2025313 PMAQI
8th Jul 2025304 PMAQI
8th Jul 2025325 PMAQI
8th Jul 2025356 PMAQI
8th Jul 2025327 PMAQI
8th Jul 2025288 PMAQI
8th Jul 2025289 PMAQI
8th Jul 20253010 PMAQI
8th Jul 20253011 PMAQI
9th Jul 20253012 AMAQI
9th Jul 2025331 AMAQI
9th Jul 2025322 AMAQI
9th Jul 2025363 AMAQI
9th Jul 2025334 AMAQI
25°C15/35°C
9th Jul 2025295 AMAQI
9th Jul 2025286 AMAQI
9th Jul 2025307 AMAQI
9th Jul 2025358 AMAQI
9th Jul 2025389 AMAQI
9th Jul 20253610 AMAQI
9th Jul 20253711 AMAQI
9th Jul 20253612 PMAQI
9th Jul 2025351 PMAQI
9th Jul 2025322 PMAQI
9th Jul 2025283 PMAQI
9th Jul 2025284 PMAQI
9th Jul 2025275 PMAQI
9th Jul 2025266 PMAQI
9th Jul 2025297 PMAQI
9th Jul 2025308 PMAQI
9th Jul 2025289 PMAQI
9th Jul 20253810 PMAQI
9th Jul 20253211 PMAQI
10th Jul 20253212 AMAQI
10th Jul 2025321 AMAQI
10th Jul 2025342 AMAQI
10th Jul 2025303 AMAQI
10th Jul 2025334 AMAQI
29°C21/37°C
10th Jul 2025265 AMAQI
10th Jul 2025286 AMAQI
10th Jul 2025267 AMAQI
10th Jul 2025258 AMAQI
10th Jul 2025289 AMAQI
10th Jul 20253110 AMAQI
10th Jul 20253111 AMAQI
10th Jul 20253212 PMAQI
10th Jul 2025281 PMAQI
10th Jul 2025292 PMAQI
10th Jul 2025313 PMAQI
10th Jul 2025364 PMAQI
10th Jul 2025435 PMAQI
10th Jul 2025456 PMAQI
10th Jul 2025367 PMAQI
10th Jul 2025368 PMAQI
10th Jul 2025429 PMAQI
10th Jul 20253810 PMAQI
10th Jul 20253711 PMAQI
11th Jul 20253612 AMAQI
11th Jul 2025361 AMAQI
11th Jul 2025372 AMAQI
11th Jul 2025383 AMAQI
11th Jul 2025364 AMAQI
26°C18/32°C
11th Jul 2025385 AMAQI
11th Jul 2025356 AMAQI
11th Jul 2025357 AMAQI
11th Jul 2025388 AMAQI
11th Jul 2025419 AMAQI
11th Jul 20254010 AMAQI
11th Jul 20254011 AMAQI
11th Jul 20254512 PMAQI
11th Jul 2025461 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025383 PMAQI
11th Jul 2025384 PMAQI
11th Jul 2025385 PMAQI
11th Jul 2025376 PMAQI
11th Jul 2025397 PMAQI
11th Jul 2025398 PMAQI
11th Jul 2025369 PMAQI
11th Jul 20254010 PMAQI
11th Jul 20254811 PMAQI
12th Jul 20255312 AMAQI
12th Jul 2025551 AMAQI
12th Jul 2025542 AMAQI
12th Jul 2025543 AMAQI
12th Jul 2025564 AMAQI
20°C13/27°C
12th Jul 2025685 AMAQI
12th Jul 2025686 AMAQI
12th Jul 2025627 AMAQI
12th Jul 2025648 AMAQI
12th Jul 2025629 AMAQI
12th Jul 20256210 AMAQI
12th Jul 20256211 AMAQI
12th Jul 20255912 PMAQI
12th Jul 2025591 PMAQI
12th Jul 2025582 PMAQI
12th Jul 2025583 PMAQI
12th Jul 2025574 PMAQI
12th Jul 2025565 PMAQI
12th Jul 2025556 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025568 PMAQI
12th Jul 2025519 PMAQI
12th Jul 20255210 PMAQI
12th Jul 20255311 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025531 AMAQI
13th Jul 2025542 AMAQI
13th Jul 2025543 AMAQI
13th Jul 2025554 AMAQI
20°C12/27°C
13th Jul 2025445 AMAQI
13th Jul 2025486 AMAQI
13th Jul 2025507 AMAQI
13th Jul 2025508 AMAQI
13th Jul 2025479 AMAQI
13th Jul 20254210 AMAQI
13th Jul 20254111 AMAQI
13th Jul 20254212 PMAQI
13th Jul 2025441 PMAQI
13th Jul 2025422 PMAQI
13th Jul 2025463 PMAQI
13th Jul 2025464 PMAQI
13th Jul 2025445 PMAQI
13th Jul 2025446 PMAQI
13th Jul 2025477 PMAQI
13th Jul 2025458 PMAQI
13th Jul 2025429 PMAQI
13th Jul 20254010 PMAQI
13th Jul 20254211 PMAQI
14th Jul 20254412 AMAQI
14th Jul 2025411 AMAQI
14th Jul 2025422 AMAQI
14th Jul 2025403 AMAQI
14th Jul 2025384 AMAQI
25°C17/32°C
14th Jul 2025265 AMAQI
14th Jul 2025236 AMAQI
14th Jul 2025297 AMAQI
14th Jul 2025318 AMAQI
14th Jul 2025329 AMAQI
14th Jul 20253210 AMAQI
14th Jul 20253011 AMAQI
14th Jul 20253212 PMAQI
14th Jul 2025301 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025323 PMAQI
14th Jul 2025334 PMAQI
14th Jul 2025325 PMAQI
14th Jul 2025316 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025348 PMAQI
14th Jul 2025289 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20252911 PMAQI
15th Jul 20253112 AMAQI
15th Jul 2025291 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025283 AMAQI
15th Jul 2025304 AMAQI
26°C20/35°C
15th Jul 2025265 AMAQI
15th Jul 2025246 AMAQI
15th Jul 2025287 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025369 AMAQI
15th Jul 20253810 AMAQI
15th Jul 20254011 AMAQI
15th Jul 20253512 PMAQI
15th Jul 2025301 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025333 PMAQI
15th Jul 2025384 PMAQI
15th Jul 2025325 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025327 PMAQI
15th Jul 2025328 PMAQI
15th Jul 2025349 PMAQI
15th Jul 20253310 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253412 AMAQI
16th Jul 2025341 AMAQI
16th Jul 2025362 AMAQI
16th Jul 2025363 AMAQI
16th Jul 2025374 AMAQI
27°C20/35°C
16th Jul 2025415 AMAQI
16th Jul 2025426 AMAQI
16th Jul 2025457 AMAQI
16th Jul 2025488 AMAQI
16th Jul 2025509 AMAQI
16th Jul 20255110 AMAQI
16th Jul 20255011 AMAQI
16th Jul 20254912 PMAQI
16th Jul 2025511 PMAQI
16th Jul 2025502 PMAQI
16th Jul 2025503 PMAQI
16th Jul 2025494 PMAQI
16th Jul 2025515 PMAQI
16th Jul 2025526 PMAQI
16th Jul 2025487 PMAQI
16th Jul 2025468 PMAQI
16th Jul 2025489 PMAQI
16th Jul 20254510 PMAQI
16th Jul 20254411 PMAQI
17th Jul 20254812 AMAQI
17th Jul 2025491 AMAQI
17th Jul 2025482 AMAQI
17th Jul 2025483 AMAQI
17th Jul 2025484 AMAQI
20°C14/28°C
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025537 AMAQI
17th Jul 2025548 AMAQI
17th Jul 2025559 AMAQI
17th Jul 20255610 AMAQI
17th Jul 20255611 AMAQI
17th Jul 20255812 PMAQI
17th Jul 2025601 PMAQI
17th Jul 2025592 PMAQI
17th Jul 2025573 PMAQI
17th Jul 2025584 PMAQI
17th Jul 2025575 PMAQI
17th Jul 2025566 PMAQI
17th Jul 2025547 PMAQI
17th Jul 2025538 PMAQI
17th Jul 2025529 PMAQI
17th Jul 20255010 PMAQI
17th Jul 20255011 PMAQI
18th Jul 20255212 AMAQI
18th Jul 2025521 AMAQI
18th Jul 2025502 AMAQI
18th Jul 2025503 AMAQI
18th Jul 2025504 AMAQI
22°C15/30°C
18th Jul 2025495 AMAQI
18th Jul 2025486 AMAQI
18th Jul 2025517 AMAQI
18th Jul 2025538 AMAQI
18th Jul 2025549 AMAQI
18th Jul 20255610 AMAQI
18th Jul 20255411 AMAQI
18th Jul 20255312 PMAQI
18th Jul 2025511 PMAQI
18th Jul 2025522 PMAQI
18th Jul 2025523 PMAQI
18th Jul 2025524 PMAQI
18th Jul 2025525 PMAQI
18th Jul 2025526 PMAQI
18th Jul 2025527 PMAQI
18th Jul 2025508 PMAQI
18th Jul 2025509 PMAQI
18th Jul 20254910 PMAQI
18th Jul 20255111 PMAQI
19th Jul 20255112 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025482 AMAQI
19th Jul 2025493 AMAQI
19th Jul 2025474 AMAQI
24°C15/34°C
19th Jul 2025415 AMAQI
19th Jul 2025406 AMAQI
19th Jul 2025477 AMAQI
19th Jul 2025458 AMAQI
19th Jul 2025429 AMAQI
19th Jul 20254110 AMAQI
19th Jul 20254211 AMAQI
19th Jul 20254312 PMAQI
19th Jul 2025411 PMAQI
19th Jul 2025422 PMAQI
19th Jul 2025443 PMAQI
19th Jul 2025424 PMAQI
19th Jul 2025425 PMAQI
19th Jul 2025426 PMAQI
19th Jul 2025427 PMAQI
19th Jul 2025448 PMAQI
19th Jul 2025409 PMAQI
19th Jul 20254110 PMAQI
19th Jul 20254011 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025391 AMAQI
20th Jul 2025402 AMAQI
20th Jul 2025403 AMAQI
20th Jul 2025414 AMAQI
25°C18/33°C
20th Jul 2025375 AMAQI
20th Jul 2025326 AMAQI
20th Jul 2025357 AMAQI
20th Jul 2025338 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20253110 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025292 PMAQI
20th Jul 2025323 PMAQI
20th Jul 2025324 PMAQI
20th Jul 2025315 PMAQI
20th Jul 2025306 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025318 PMAQI
20th Jul 2025299 PMAQI
20th Jul 20252910 PMAQI
20th Jul 20253011 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025281 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025283 AMAQI
21st Jul 2025284 AMAQI
25°C20/34°C
21st Jul 2025235 AMAQI
21st Jul 2025226 AMAQI
21st Jul 2025257 AMAQI
21st Jul 2025308 AMAQI
21st Jul 2025329 AMAQI
21st Jul 20253010 AMAQI
21st Jul 20253211 AMAQI
21st Jul 20253412 PMAQI
21st Jul 2025301 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025313 PMAQI
21st Jul 2025294 PMAQI
21st Jul 2025285 PMAQI
21st Jul 2025306 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025279 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20252911 PMAQI
22nd Jul 20252812 AMAQI
22nd Jul 2025271 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025263 AMAQI
22nd Jul 2025264 AMAQI
25°C20/34°C
22nd Jul 2025215 AMAQI
22nd Jul 2025206 AMAQI
22nd Jul 2025257 AMAQI
22nd Jul 2025258 AMAQI
22nd Jul 2025299 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20253211 AMAQI
22nd Jul 20253412 PMAQI
22nd Jul 2025341 PMAQI
22nd Jul 2025302 PMAQI
22nd Jul 2025273 PMAQI
22nd Jul 2025274 PMAQI
22nd Jul 2025275 PMAQI
22nd Jul 2025286 PMAQI
22nd Jul 2025277 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252410 PMAQI
22nd Jul 20252611 PMAQI
23rd Jul 20252512 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025232 AMAQI
23rd Jul 2025243 AMAQI
23rd Jul 2025224 AMAQI
25°C20/33°C
23rd Jul 2025175 AMAQI
23rd Jul 2025186 AMAQI
23rd Jul 2025207 AMAQI
23rd Jul 2025228 AMAQI
23rd Jul 2025259 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025301 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025313 PMAQI
23rd Jul 2025294 PMAQI
23rd Jul 2025295 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025268 PMAQI
23rd Jul 2025279 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252612 AMAQI
24th Jul 2025261 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025283 AMAQI
24th Jul 2025284 AMAQI
22°C17/29°C
24th Jul 2025285 AMAQI
24th Jul 2025286 AMAQI
24th Jul 2025307 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025359 AMAQI
24th Jul 20253810 AMAQI
24th Jul 20253911 AMAQI
24th Jul 20254012 PMAQI
24th Jul 2025361 PMAQI
24th Jul 2025332 PMAQI
24th Jul 2025323 PMAQI
24th Jul 2025294 PMAQI
24th Jul 2025295 PMAQI
24th Jul 2025306 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025309 PMAQI
24th Jul 20253110 PMAQI
24th Jul 20253111 PMAQI
25th Jul 20253012 AMAQI
25th Jul 2025291 AMAQI
25th Jul 2025302 AMAQI
25th Jul 2025303 AMAQI
25th Jul 2025304 AMAQI
19°C15/28°C
25th Jul 2025325 AMAQI
25th Jul 2025326 AMAQI
25th Jul 2025347 AMAQI
25th Jul 2025388 AMAQI
25th Jul 2025439 AMAQI
25th Jul 20254410 AMAQI
25th Jul 20254411 AMAQI
25th Jul 20254112 PMAQI
25th Jul 2025381 PMAQI
25th Jul 2025392 PMAQI
25th Jul 2025383 PMAQI
25th Jul 2025384 PMAQI
25th Jul 2025405 PMAQI
25th Jul 2025406 PMAQI
25th Jul 2025387 PMAQI
25th Jul 2025368 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20253710 PMAQI
25th Jul 20253911 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025381 AMAQI
26th Jul 2025392 AMAQI
26th Jul 2025373 AMAQI
26th Jul 2025394 AMAQI
23°C15/33°C
26th Jul 2025445 AMAQI
26th Jul 2025486 AMAQI
26th Jul 2025467 AMAQI
26th Jul 2025468 AMAQI
26th Jul 2025469 AMAQI
26th Jul 20254610 AMAQI
26th Jul 20254211 AMAQI
26th Jul 20254112 PMAQI
26th Jul 2025391 PMAQI
26th Jul 2025402 PMAQI
26th Jul 2025403 PMAQI
26th Jul 2025394 PMAQI
26th Jul 2025405 PMAQI
26th Jul 2025386 PMAQI
26th Jul 2025397 PMAQI
26th Jul 2025418 PMAQI
26th Jul 2025349 PMAQI
26th Jul 20253410 PMAQI
26th Jul 20253511 PMAQI
27th Jul 20253512 AMAQI
27th Jul 2025341 AMAQI
27th Jul 2025342 AMAQI
27th Jul 2025343 AMAQI
27th Jul 2025354 AMAQI
24°C18/34°C
27th Jul 2025305 AMAQI
27th Jul 2025276 AMAQI
27th Jul 2025297 AMAQI
27th Jul 2025288 AMAQI
27th Jul 2025289 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252611 AMAQI
27th Jul 20252512 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025232 PMAQI
27th Jul 2025253 PMAQI
27th Jul 2025244 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025256 PMAQI
27th Jul 2025267 PMAQI
27th Jul 2025278 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252510 PMAQI
27th Jul 20252511 PMAQI
28th Jul 20252712 AMAQI
28th Jul 2025291 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025293 AMAQI
28th Jul 2025294 AMAQI
25°C17/34°C
28th Jul 2025255 AMAQI
28th Jul 2025276 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025338 AMAQI
28th Jul 2025349 AMAQI
28th Jul 20253510 AMAQI
28th Jul 20253811 AMAQI
28th Jul 20253512 PMAQI
28th Jul 2025311 PMAQI
28th Jul 2025302 PMAQI
28th Jul 2025293 PMAQI
28th Jul 2025284 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025276 PMAQI
28th Jul 2025287 PMAQI
28th Jul 2025288 PMAQI
28th Jul 2025269 PMAQI
28th Jul 20252610 PMAQI
28th Jul 20253011 PMAQI
29th Jul 20253612 AMAQI
29th Jul 2025371 AMAQI
29th Jul 2025442 AMAQI
29th Jul 2025443 AMAQI
29th Jul 2025474 AMAQI
27°C20/34°C
29th Jul 2025525 AMAQI
29th Jul 2025536 AMAQI
29th Jul 2025547 AMAQI
29th Jul 2025548 AMAQI
29th Jul 2025559 AMAQI
29th Jul 20255610 AMAQI
29th Jul 20255511 AMAQI
29th Jul 20255512 PMAQI
29th Jul 2025541 PMAQI
29th Jul 2025542 PMAQI
29th Jul 2025533 PMAQI
29th Jul 2025534 PMAQI
29th Jul 2025525 PMAQI
29th Jul 2025536 PMAQI
29th Jul 2025527 PMAQI
29th Jul 2025518 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254111 PMAQI
30th Jul 20253812 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025412 AMAQI
30th Jul 2025423 AMAQI
30th Jul 2025434 AMAQI
22°C17/28°C
30th Jul 2025365 AMAQI
30th Jul 2025366 AMAQI
30th Jul 2025387 AMAQI
30th Jul 2025428 AMAQI
30th Jul 2025449 AMAQI
30th Jul 20254110 AMAQI
30th Jul 20254111 AMAQI
30th Jul 20254112 PMAQI
30th Jul 2025431 PMAQI
30th Jul 2025432 PMAQI
30th Jul 2025433 PMAQI
30th Jul 2025434 PMAQI
30th Jul 2025435 PMAQI
30th Jul 2025436 PMAQI
30th Jul 2025437 PMAQI
30th Jul 2025438 PMAQI
30th Jul 2025469 PMAQI
30th Jul 20254810 PMAQI
30th Jul 20254911 PMAQI
31st Jul 20254912 AMAQI
31st Jul 2025481 AMAQI
31st Jul 2025502 AMAQI
31st Jul 2025513 AMAQI
31st Jul 2025494 AMAQI
18°C14/23°C
31st Jul 2025545 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025547 AMAQI
31st Jul 2025548 AMAQI
31st Jul 2025559 AMAQI
31st Jul 20255610 AMAQI
31st Jul 20255711 AMAQI
31st Jul 20255812 PMAQI
31st Jul 2025591 PMAQI
31st Jul 2025572 PMAQI
31st Jul 2025573 PMAQI
31st Jul 2025564 PMAQI
31st Jul 2025585 PMAQI
31st Jul 2025596 PMAQI
31st Jul 2025557 PMAQI
31st Jul 2025568 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20255710 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255412 AMAQI
1st Aug 2025511 AMAQI
1st Aug 2025512 AMAQI
1st Aug 2025503 AMAQI
1st Aug 2025524 AMAQI
20°C13/30°C
1st Aug 2025535 AMAQI
1st Aug 2025536 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025588 AMAQI
1st Aug 2025569 AMAQI
1st Aug 20255710 AMAQI
1st Aug 20255611 AMAQI
1st Aug 20255712 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025562 PMAQI
1st Aug 2025563 PMAQI
1st Aug 2025554 PMAQI
1st Aug 2025575 PMAQI
1st Aug 2025556 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025528 PMAQI
1st Aug 2025449 PMAQI
1st Aug 20253610 PMAQI
1st Aug 20253011 PMAQI
2nd Aug 20252912 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025383 AMAQI
2nd Aug 2025384 AMAQI
21°C12/32°C
2nd Aug 2025365 AMAQI
2nd Aug 2025386 AMAQI
2nd Aug 2025407 AMAQI
2nd Aug 2025428 AMAQI
2nd Aug 2025439 AMAQI
2nd Aug 20254610 AMAQI
2nd Aug 20254611 AMAQI
2nd Aug 20254612 PMAQI
2nd Aug 2025411 PMAQI
2nd Aug 2025382 PMAQI
2nd Aug 2025353 PMAQI
2nd Aug 2025334 PMAQI
2nd Aug 2025335 PMAQI
2nd Aug 2025336 PMAQI
2nd Aug 2025357 PMAQI
2nd Aug 2025318 PMAQI
2nd Aug 2025289 PMAQI
2nd Aug 20252810 PMAQI
2nd Aug 20252811 PMAQI
3rd Aug 20252612 AMAQI
3rd Aug 2025281 AMAQI
3rd Aug 2025282 AMAQI
3rd Aug 2025283 AMAQI
3rd Aug 2025294 AMAQI
21°C14/30°C
3rd Aug 2025285 AMAQI
3rd Aug 2025306 AMAQI
3rd Aug 2025297 AMAQI
3rd Aug 2025298 AMAQI
3rd Aug 2025329 AMAQI
3rd Aug 20253110 AMAQI
3rd Aug 20253011 AMAQI
3rd Aug 20252912 PMAQI
3rd Aug 2025241 PMAQI
3rd Aug 2025222 PMAQI
3rd Aug 2025203 PMAQI
3rd Aug 2025224 PMAQI
3rd Aug 2025215 PMAQI
3rd Aug 2025216 PMAQI
3rd Aug 2025287 PMAQI
3rd Aug 2025248 PMAQI
3rd Aug 2025239 PMAQI
3rd Aug 20252310 PMAQI
3rd Aug 20252311 PMAQI
4th Aug 20252412 AMAQI
4th Aug 2025241 AMAQI
4th Aug 2025242 AMAQI
4th Aug 2025263 AMAQI
4th Aug 2025284 AMAQI
22°C14/30°C
4th Aug 2025275 AMAQI
4th Aug 2025306 AMAQI
4th Aug 2025317 AMAQI
4th Aug 2025368 AMAQI
4th Aug 2025429 AMAQI
4th Aug 20254610 AMAQI
4th Aug 20254511 AMAQI
4th Aug 20254512 PMAQI
4th Aug 2025431 PMAQI
4th Aug 2025432 PMAQI
4th Aug 2025443 PMAQI
4th Aug 2025464 PMAQI
4th Aug 2025465 PMAQI
4th Aug 2025466 PMAQI
4th Aug 2025337 PMAQI
4th Aug 2025438 PMAQI
4th Aug 2025549 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255312 AMAQI
5th Aug 2025531 AMAQI
5th Aug 2025502 AMAQI
5th Aug 2025483 AMAQI
5th Aug 2025454 AMAQI
24°C15/34°C
5th Aug 2025485 AMAQI
5th Aug 2025506 AMAQI
5th Aug 2025537 AMAQI
5th Aug 2025558 AMAQI
5th Aug 2025589 AMAQI
5th Aug 20256710 AMAQI
5th Aug 20256611 AMAQI
5th Aug 20256412 PMAQI
5th Aug 2025631 PMAQI
5th Aug 2025622 PMAQI
5th Aug 2025603 PMAQI
5th Aug 2025594 PMAQI
5th Aug 2025555 PMAQI
5th Aug 2025526 PMAQI
5th Aug 2025557 PMAQI
5th Aug 2025508 PMAQI
5th Aug 2025479 PMAQI
5th Aug 20255210 PMAQI
5th Aug 20255411 PMAQI
6th Aug 20255712 AMAQI
6th Aug 2025681 AMAQI
6th Aug 2025822 AMAQI
6th Aug 2025933 AMAQI
6th Aug 2025954 AMAQI
27°C17/36°C
6th Aug 2025895 AMAQI
6th Aug 2025866 AMAQI
6th Aug 2025727 AMAQI
6th Aug 2025658 AMAQI
6th Aug 2025699 AMAQI
6th Aug 20256810 AMAQI
6th Aug 20256811 AMAQI
6th Aug 20256512 PMAQI
6th Aug 2025631 PMAQI
6th Aug 2025622 PMAQI
6th Aug 2025603 PMAQI
6th Aug 2025584 PMAQI
6th Aug 2025565 PMAQI
6th Aug 2025536 PMAQI
6th Aug 2025607 PMAQI
6th Aug 2025568 PMAQI
6th Aug 2025499 PMAQI
6th Aug 20255210 PMAQI
6th Aug 20255011 PMAQI
7th Aug 20255612 AMAQI
7th Aug 2025621 AMAQI
7th Aug 2025602 AMAQI
7th Aug 2025603 AMAQI
7th Aug 2025594 AMAQI
28°C19/37°C
7th Aug 2025435 AMAQI
5 AM7th Aug 2025396 AMAQI
7th Aug 2025507 AMAQI
7th Aug 2025518 AMAQI
12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
41AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 6 AM
39AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 41), while the lowest AQI was between 5 AM to 6 AM (Avg. 39).
Night time
Avg. Highest Time
12 AM - 4 AM
40AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
9 PM - 11 PM
38AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 40), while the lowest AQI was between 9 PM to 11 PM (Avg. 38).
2025 Days Vs Air Quality
Reservoir Road, Boulder, Colorado, United States
2025
94%
126
6%
8
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Good
126 DaysModerate
8 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 219 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
Reservoir Road, Boulder, Colorado, 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 March 2025
27AQI
27AQI
2nd March 2025
25AQI
25AQI
3rd March 2025
29AQI
29AQI
4th March 2025
20AQI
20AQI
5th March 2025
27AQI
27AQI
6th March 2025
42AQI
42AQI
1st April 2025
29AQI
29AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
20AQI
20AQI
4th April 2025
29AQI
29AQI
5th April 2025
32AQI
32AQI
6th April 2025
26AQI
26AQI
7th April 2025
31AQI
31AQI
8th April 2025
31AQI
31AQI
9th April 2025
42AQI
42AQI
10th April 2025
45AQI
45AQI
11th April 2025
42AQI
42AQI
12th April 2025
31AQI
31AQI
13th April 2025
25AQI
25AQI
14th April 2025
18AQI
18AQI
15th April 2025
37AQI
37AQI
16th April 2025
28AQI
28AQI
17th April 2025
26AQI
26AQI
18th April 2025
14AQI
14AQI
19th April 2025
24AQI
24AQI
20th April 2025
21AQI
21AQI
21st April 2025
17AQI
17AQI
22nd April 2025
21AQI
21AQI
23rd April 2025
35AQI
35AQI
24th April 2025
57AQI
57AQI
25th April 2025
28AQI
28AQI
26th April 2025
28AQI
28AQI
27th April 2025
30AQI
30AQI
28th April 2025
17AQI
17AQI
29th April 2025
17AQI
17AQI
30th April 2025
19AQI
19AQI
1st May 2025
17AQI
17AQI
2nd May 2025
20AQI
20AQI
3rd May 2025
21AQI
21AQI
4th May 2025
22AQI
22AQI
5th May 2025
17AQI
17AQI
6th May 2025
19AQI
19AQI
7th May 2025
24AQI
24AQI
8th May 2025
29AQI
29AQI
9th May 2025
27AQI
27AQI
10th May 2025
25AQI
25AQI
11th May 2025
20AQI
20AQI
12th May 2025
23AQI
23AQI
13th May 2025
28AQI
28AQI
14th May 2025
34AQI
34AQI
15th May 2025
15AQI
15AQI
16th May 2025
16AQI
16AQI
17th May 2025
19AQI
19AQI
18th May 2025
34AQI
34AQI
19th May 2025
14AQI
14AQI
20th May 2025
17AQI
17AQI
21st May 2025
20AQI
20AQI
22nd May 2025
24AQI
24AQI
23rd May 2025
32AQI
32AQI
24th May 2025
46AQI
46AQI
25th May 2025
17AQI
17AQI
26th May 2025
18AQI
18AQI
27th May 2025
34AQI
34AQI
28th May 2025
25AQI
25AQI
29th May 2025
18AQI
18AQI
30th May 2025
24AQI
24AQI
31st May 2025
26AQI
26AQI
1st June 2025
30AQI
30AQI
2nd June 2025
25AQI
25AQI
3rd June 2025
21AQI
21AQI
4th June 2025
37AQI
37AQI
5th June 2025
38AQI
38AQI
6th June 2025
33AQI
33AQI
7th June 2025
22AQI
22AQI
8th June 2025
31AQI
31AQI
9th June 2025
49AQI
49AQI
10th June 2025
37AQI
37AQI
11th June 2025
28AQI
28AQI
12th June 2025
26AQI
26AQI
13th June 2025
26AQI
26AQI
14th June 2025
32AQI
32AQI
15th June 2025
26AQI
26AQI
16th June 2025
27AQI
27AQI
17th June 2025
31AQI
31AQI
18th June 2025
27AQI
27AQI
19th June 2025
30AQI
30AQI
20th June 2025
32AQI
32AQI
21st June 2025
33AQI
33AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
40AQI
40AQI
24th June 2025
50AQI
50AQI
25th June 2025
43AQI
43AQI
26th June 2025
32AQI
32AQI
27th June 2025
32AQI
32AQI
28th June 2025
33AQI
33AQI
29th June 2025
32AQI
32AQI
30th June 2025
33AQI
33AQI
1st July 2025
33AQI
33AQI
2nd July 2025
28AQI
28AQI
3rd July 2025
27AQI
27AQI
4th July 2025
25AQI
25AQI
5th July 2025
40AQI
40AQI
6th July 2025
29AQI
29AQI
7th July 2025
29AQI
29AQI
8th July 2025
31AQI
31AQI
9th July 2025
32AQI
32AQI
10th July 2025
34AQI
34AQI
11th July 2025
39AQI
39AQI
12th July 2025
57AQI
57AQI
13th July 2025
47AQI
47AQI
14th July 2025
33AQI
33AQI
15th July 2025
32AQI
32AQI
16th July 2025
45AQI
45AQI
17th July 2025
53AQI
53AQI
18th July 2025
51AQI
51AQI
19th July 2025
44AQI
44AQI
20th July 2025
33AQI
33AQI
21st July 2025
28AQI
28AQI
22nd July 2025
27AQI
27AQI
23rd July 2025
25AQI
25AQI
24th July 2025
31AQI
31AQI
25th July 2025
36AQI
36AQI
26th July 2025
40AQI
40AQI
27th July 2025
28AQI
28AQI
28th July 2025
29AQI
29AQI
29th July 2025
49AQI
49AQI
30th July 2025
42AQI
42AQI
31st July 2025
55AQI
55AQI
1st August 2025
52AQI
52AQI
2nd August 2025
36AQI
36AQI
3rd August 2025
26AQI
26AQI
4th August 2025
39AQI
39AQI
5th August 2025
54AQI
54AQI
6th August 2025
71AQI
71AQI
28AQI
28AQI
23AQI
32AQI
37AQI
46AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202531AQI
6
29
1
31
30
27
4
3
3
126
8
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
May23AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
31AQILeast Polluted Year Recorded
2025(Avg.)
31AQIReservoir Road's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
