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
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2025
67AQILowest AQI recorded on
16th Aug 2026
22AQISame Day Analysis (17th August):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 24 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 17th Aug - 18th Aug 2026
Reservoir Road, Boulder, Colorado, United States
AQI
Day
Night
.
6 AM17th Aug 2026
8 PM
5 AM18th Aug 2026
Day time
Avg. Highest Time
1PM17th Aug
53AQI
Avg. Lowest Time
6AM17th Aug
14AQI
Night time
Avg. Highest Time
4AM18th Aug
38AQI
Avg. Lowest Time
12AM18th Aug
17AQI
In the last 24 hours,
Reservoir Road's AQI reached its highest point of 53 at 1 PM during the Day, while the lowest point, 14, was recorded at 6 AM during the Day between 17th Aug and 18th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Reservoir Road, Boulder, Colorado, United States
JulAug
20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
20th Jul 2026256 AMAQI
20th Jul 2026297 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026339 AMAQI
20th Jul 20262710 AMAQI
20th Jul 20262911 AMAQI
20th Jul 20264012 PMAQI
20th Jul 2026461 PMAQI
20th Jul 2026462 PMAQI
20th Jul 2026443 PMAQI
20th Jul 2026464 PMAQI
20th Jul 2026385 PMAQI
20th Jul 2026346 PMAQI
20th Jul 2026427 PMAQI
20th Jul 2026448 PMAQI
20th Jul 20264410 PMAQI
20th Jul 20264611 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026441 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026423 AMAQI
21st Jul 2026334 AMAQI
21st Jul 2026195 AMAQI
26°C18/37°C
21st Jul 2026336 AMAQI
21st Jul 2026367 AMAQI
21st Jul 2026448 AMAQI
21st Jul 2026489 AMAQI
21st Jul 20264910 AMAQI
21st Jul 20265111 AMAQI
21st Jul 20264812 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026422 PMAQI
21st Jul 2026403 PMAQI
21st Jul 2026404 PMAQI
21st Jul 2026385 PMAQI
21st Jul 2026326 PMAQI
21st Jul 2026317 PMAQI
21st Jul 2026278 PMAQI
21st Jul 2026349 PMAQI
21st Jul 20262210 PMAQI
21st Jul 20262511 PMAQI
22nd Jul 20263612 AMAQI
22nd Jul 2026361 AMAQI
22nd Jul 2026252 AMAQI
22nd Jul 2026333 AMAQI
22nd Jul 2026294 AMAQI
22nd Jul 2026315 AMAQI
26°C19/35°C
22nd Jul 2026336 AMAQI
22nd Jul 2026337 AMAQI
22nd Jul 2026338 AMAQI
22nd Jul 2026349 AMAQI
22nd Jul 20263610 AMAQI
22nd Jul 20262211 AMAQI
22nd Jul 20262212 PMAQI
22nd Jul 2026271 PMAQI
22nd Jul 2026272 PMAQI
22nd Jul 2026273 PMAQI
22nd Jul 2026254 PMAQI
22nd Jul 2026275 PMAQI
22nd Jul 2026256 PMAQI
22nd Jul 2026277 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026259 PMAQI
22nd Jul 20263410 PMAQI
22nd Jul 20264211 PMAQI
23rd Jul 20263812 AMAQI
23rd Jul 2026361 AMAQI
23rd Jul 2026272 AMAQI
23rd Jul 2026313 AMAQI
23rd Jul 2026344 AMAQI
23rd Jul 2026335 AMAQI
22°C16/32°C
23rd Jul 2026386 AMAQI
23rd Jul 2026317 AMAQI
23rd Jul 2026338 AMAQI
23rd Jul 2026339 AMAQI
23rd Jul 20263610 AMAQI
23rd Jul 20263311 AMAQI
23rd Jul 20264212 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026332 PMAQI
23rd Jul 2026313 PMAQI
23rd Jul 2026294 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026196 PMAQI
23rd Jul 2026207 PMAQI
23rd Jul 2026258 PMAQI
23rd Jul 2026339 PMAQI
23rd Jul 20263310 PMAQI
23rd Jul 20264211 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026251 AMAQI
24th Jul 2026332 AMAQI
24th Jul 2026333 AMAQI
24th Jul 2026334 AMAQI
24th Jul 2026335 AMAQI
22°C16/29°C
24th Jul 2026336 AMAQI
24th Jul 2026337 AMAQI
24th Jul 2026318 AMAQI
24th Jul 2026299 AMAQI
24th Jul 20263610 AMAQI
24th Jul 20262911 AMAQI
24th Jul 20263312 PMAQI
24th Jul 2026331 PMAQI
24th Jul 2026272 PMAQI
24th Jul 2026363 PMAQI
24th Jul 2026334 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026256 PMAQI
24th Jul 2026337 PMAQI
24th Jul 2026428 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20263310 PMAQI
24th Jul 20263311 PMAQI
25th Jul 20262912 AMAQI
25th Jul 2026331 AMAQI
25th Jul 2026332 AMAQI
25th Jul 2026383 AMAQI
25th Jul 2026324 AMAQI
25th Jul 2026325 AMAQI
25°C16/34°C
25th Jul 2026316 AMAQI
25th Jul 2026337 AMAQI
25th Jul 2026338 AMAQI
25th Jul 2026339 AMAQI
25th Jul 20263310 AMAQI
25th Jul 20265011 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026301 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026163 PMAQI
25th Jul 2026254 PMAQI
25th Jul 2026275 PMAQI
25th Jul 2026276 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262511 PMAQI
26th Jul 20263412 AMAQI
26th Jul 2026141 AMAQI
26th Jul 2026182 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026294 AMAQI
26th Jul 2026255 AMAQI
26°C18/36°C
26th Jul 2026336 AMAQI
26th Jul 2026337 AMAQI
26th Jul 2026338 AMAQI
26th Jul 2026299 AMAQI
26th Jul 20263310 AMAQI
26th Jul 20263311 AMAQI
26th Jul 20263312 PMAQI
26th Jul 2026311 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026233 PMAQI
26th Jul 2026124 PMAQI
26th Jul 2026335 PMAQI
26th Jul 2026196 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026338 PMAQI
26th Jul 2026339 PMAQI
26th Jul 20263310 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20263312 AMAQI
27th Jul 2026331 AMAQI
27th Jul 2026312 AMAQI
27th Jul 2026123 AMAQI
27th Jul 2026144 AMAQI
27th Jul 2026145 AMAQI
27°C21/36°C
27th Jul 2026186 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026348 AMAQI
27th Jul 2026259 AMAQI
27th Jul 20262910 AMAQI
27th Jul 20262911 AMAQI
27th Jul 20263412 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026312 PMAQI
27th Jul 2026313 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026285 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026177 PMAQI
27th Jul 2026308 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20262910 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20263812 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026402 AMAQI
28th Jul 2026313 AMAQI
28th Jul 2026404 AMAQI
28th Jul 2026315 AMAQI
24°C19/32°C
28th Jul 2026386 AMAQI
28th Jul 2026327 AMAQI
28th Jul 2026468 AMAQI
28th Jul 2026259 AMAQI
28th Jul 20264610 AMAQI
28th Jul 20263311 AMAQI
28th Jul 20263812 PMAQI
28th Jul 2026461 PMAQI
28th Jul 2026462 PMAQI
28th Jul 2026353 PMAQI
28th Jul 2026314 PMAQI
28th Jul 2026335 PMAQI
28th Jul 2026336 PMAQI
28th Jul 2026277 PMAQI
28th Jul 2026338 PMAQI
28th Jul 2026299 PMAQI
28th Jul 20262910 PMAQI
28th Jul 20262911 PMAQI
29th Jul 20263112 AMAQI
29th Jul 2026331 AMAQI
29th Jul 2026332 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026384 AMAQI
29th Jul 2026445 AMAQI
22°C16/32°C
29th Jul 2026486 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026508 AMAQI
29th Jul 2026509 AMAQI
29th Jul 20265010 AMAQI
29th Jul 20263211 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026331 PMAQI
29th Jul 2026332 PMAQI
29th Jul 2026273 PMAQI
29th Jul 2026334 PMAQI
29th Jul 2026195 PMAQI
29th Jul 2026326 PMAQI
29th Jul 2026407 PMAQI
29th Jul 2026298 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20263810 PMAQI
29th Jul 20264711 PMAQI
30th Jul 20263812 AMAQI
30th Jul 2026331 AMAQI
30th Jul 2026432 AMAQI
30th Jul 2026383 AMAQI
30th Jul 2026284 AMAQI
30th Jul 2026255 AMAQI
21°C16/31°C
30th Jul 2026216 AMAQI
30th Jul 2026257 AMAQI
30th Jul 2026278 AMAQI
30th Jul 2026279 AMAQI
30th Jul 20264810 AMAQI
30th Jul 20262511 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026261 PMAQI
30th Jul 2026282 PMAQI
30th Jul 2026263 PMAQI
30th Jul 2026314 PMAQI
30th Jul 2026295 PMAQI
30th Jul 2026296 PMAQI
30th Jul 2026317 PMAQI
30th Jul 2026318 PMAQI
30th Jul 2026339 PMAQI
30th Jul 20263110 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20263112 AMAQI
31st Jul 2026251 AMAQI
31st Jul 2026272 AMAQI
31st Jul 2026253 AMAQI
31st Jul 2026274 AMAQI
31st Jul 2026275 AMAQI
24°C16/33°C
31st Jul 2026296 AMAQI
31st Jul 2026277 AMAQI
31st Jul 2026338 AMAQI
31st Jul 2026369 AMAQI
31st Jul 20262710 AMAQI
31st Jul 20263111 AMAQI
31st Jul 20263112 PMAQI
31st Jul 2026291 PMAQI
31st Jul 2026312 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026314 PMAQI
31st Jul 2026335 PMAQI
31st Jul 2026316 PMAQI
31st Jul 2026337 PMAQI
31st Jul 2026338 PMAQI
31st Jul 2026339 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20263311 PMAQI
1st Aug 20263612 AMAQI
1st Aug 2026331 AMAQI
1st Aug 2026332 AMAQI
1st Aug 2026333 AMAQI
1st Aug 2026364 AMAQI
1st Aug 2026385 AMAQI
21°C15/32°C
1st Aug 2026366 AMAQI
1st Aug 2026337 AMAQI
1st Aug 2026338 AMAQI
1st Aug 2026339 AMAQI
1st Aug 20263810 AMAQI
1st Aug 20264011 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026401 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026334 PMAQI
1st Aug 2026315 PMAQI
1st Aug 2026336 PMAQI
1st Aug 2026297 PMAQI
1st Aug 2026278 PMAQI
1st Aug 2026299 PMAQI
1st Aug 20262510 PMAQI
1st Aug 20262511 PMAQI
2nd Aug 20262912 AMAQI
2nd Aug 2026291 AMAQI
2nd Aug 2026272 AMAQI
2nd Aug 2026293 AMAQI
2nd Aug 2026314 AMAQI
2nd Aug 2026295 AMAQI
23°C14/33°C
2nd Aug 2026276 AMAQI
2nd Aug 2026317 AMAQI
2nd Aug 2026278 AMAQI
2nd Aug 2026279 AMAQI
2nd Aug 20262710 AMAQI
2nd Aug 20262911 AMAQI
2nd Aug 20263312 PMAQI
2nd Aug 2026291 PMAQI
2nd Aug 2026312 PMAQI
2nd Aug 2026313 PMAQI
2nd Aug 2026274 PMAQI
2nd Aug 2026385 PMAQI
2nd Aug 2026296 PMAQI
2nd Aug 2026487 PMAQI
2nd Aug 2026488 PMAQI
2nd Aug 2026299 PMAQI
2nd Aug 20263110 PMAQI
2nd Aug 20262711 PMAQI
3rd Aug 20264212 AMAQI
3rd Aug 2026491 AMAQI
3rd Aug 2026542 AMAQI
3rd Aug 2026563 AMAQI
3rd Aug 2026584 AMAQI
3rd Aug 2026645 AMAQI
27°C17/38°C
3rd Aug 2026576 AMAQI
3rd Aug 2026627 AMAQI
3rd Aug 2026598 AMAQI
3rd Aug 2026639 AMAQI
3rd Aug 20266010 AMAQI
3rd Aug 20265711 AMAQI
3rd Aug 20265412 PMAQI
3rd Aug 2026551 PMAQI
3rd Aug 2026532 PMAQI
3rd Aug 2026523 PMAQI
3rd Aug 2026524 PMAQI
3rd Aug 2026535 PMAQI
3rd Aug 2026576 PMAQI
3rd Aug 2026627 PMAQI
3rd Aug 2026708 PMAQI
3rd Aug 2026769 PMAQI
3rd Aug 20267610 PMAQI
3rd Aug 20268311 PMAQI
4th Aug 20267612 AMAQI
4th Aug 2026711 AMAQI
4th Aug 2026702 AMAQI
4th Aug 2026653 AMAQI
4th Aug 2026674 AMAQI
4th Aug 2026665 AMAQI
26°C18/37°C
4th Aug 2026696 AMAQI
4th Aug 2026657 AMAQI
4th Aug 2026638 AMAQI
4th Aug 2026589 AMAQI
4th Aug 20265810 AMAQI
4th Aug 20265711 AMAQI
4th Aug 20266012 PMAQI
4th Aug 2026621 PMAQI
4th Aug 2026602 PMAQI
4th Aug 2026623 PMAQI
4th Aug 2026644 PMAQI
4th Aug 2026665 PMAQI
4th Aug 2026646 PMAQI
4th Aug 2026657 PMAQI
4th Aug 2026678 PMAQI
4th Aug 2026679 PMAQI
4th Aug 20266410 PMAQI
4th Aug 20266011 PMAQI
5th Aug 20265812 AMAQI
5th Aug 2026571 AMAQI
5th Aug 2026562 AMAQI
5th Aug 2026533 AMAQI
5th Aug 2026524 AMAQI
5th Aug 2026545 AMAQI
17°C12/24°C
5th Aug 2026536 AMAQI
5th Aug 2026557 AMAQI
5th Aug 2026528 AMAQI
5th Aug 2026549 AMAQI
5th Aug 20265410 AMAQI
5th Aug 20265411 AMAQI
5th Aug 20265612 PMAQI
5th Aug 2026571 PMAQI
5th Aug 2026562 PMAQI
5th Aug 2026563 PMAQI
5th Aug 2026554 PMAQI
5th Aug 2026565 PMAQI
5th Aug 2026556 PMAQI
5th Aug 2026567 PMAQI
5th Aug 2026548 PMAQI
5th Aug 2026569 PMAQI
5th Aug 20265610 PMAQI
5th Aug 20265611 PMAQI
6th Aug 20265312 AMAQI
6th Aug 2026541 AMAQI
6th Aug 2026532 AMAQI
6th Aug 2026543 AMAQI
6th Aug 2026524 AMAQI
6th Aug 2026525 AMAQI
19°C8/29°C
6th Aug 2026536 AMAQI
6th Aug 2026527 AMAQI
6th Aug 2026528 AMAQI
6th Aug 2026529 AMAQI
6th Aug 20265110 AMAQI
6th Aug 20265411 AMAQI
6th Aug 20265212 PMAQI
6th Aug 2026551 PMAQI
6th Aug 2026532 PMAQI
6th Aug 2026563 PMAQI
6th Aug 2026544 PMAQI
6th Aug 2026535 PMAQI
6th Aug 2026526 PMAQI
6th Aug 2026527 PMAQI
6th Aug 2026528 PMAQI
6th Aug 2026529 PMAQI
6th Aug 20265210 PMAQI
6th Aug 20265311 PMAQI
7th Aug 20265212 AMAQI
7th Aug 2026521 AMAQI
7th Aug 2026522 AMAQI
7th Aug 2026543 AMAQI
7th Aug 2026524 AMAQI
7th Aug 2026525 AMAQI
24°C13/35°C
7th Aug 2026516 AMAQI
7th Aug 2026537 AMAQI
7th Aug 2026538 AMAQI
7th Aug 2026579 AMAQI
7th Aug 20265610 AMAQI
7th Aug 20265711 AMAQI
7th Aug 20265812 PMAQI
7th Aug 2026591 PMAQI
7th Aug 2026572 PMAQI
7th Aug 2026573 PMAQI
7th Aug 2026574 PMAQI
7th Aug 2026585 PMAQI
7th Aug 2026586 PMAQI
7th Aug 2026587 PMAQI
7th Aug 2026598 PMAQI
7th Aug 2026599 PMAQI
7th Aug 20265710 PMAQI
7th Aug 20265811 PMAQI
8th Aug 20265612 AMAQI
8th Aug 2026571 AMAQI
8th Aug 2026592 AMAQI
8th Aug 2026583 AMAQI
8th Aug 2026594 AMAQI
8th Aug 2026555 AMAQI
25°C16/34°C
8th Aug 2026536 AMAQI
8th Aug 2026577 AMAQI
8th Aug 2026538 AMAQI
8th Aug 2026579 AMAQI
8th Aug 20265510 AMAQI
8th Aug 20265311 AMAQI
8th Aug 20265112 PMAQI
8th Aug 2026511 PMAQI
8th Aug 2026522 PMAQI
8th Aug 2026523 PMAQI
8th Aug 2026464 PMAQI
8th Aug 2026465 PMAQI
8th Aug 2026446 PMAQI
8th Aug 2026447 PMAQI
8th Aug 2026428 PMAQI
8th Aug 2026409 PMAQI
8th Aug 20264210 PMAQI
8th Aug 20264011 PMAQI
9th Aug 20263812 AMAQI
9th Aug 2026381 AMAQI
9th Aug 2026382 AMAQI
9th Aug 2026403 AMAQI
9th Aug 2026334 AMAQI
9th Aug 2026365 AMAQI
27°C17/37°C
9th Aug 2026336 AMAQI
9th Aug 2026337 AMAQI
9th Aug 2026338 AMAQI
9th Aug 2026339 AMAQI
9th Aug 20263310 AMAQI
9th Aug 20263611 AMAQI
9th Aug 20263312 PMAQI
9th Aug 2026331 PMAQI
9th Aug 2026362 PMAQI
9th Aug 2026363 PMAQI
9th Aug 2026364 PMAQI
9th Aug 2026385 PMAQI
9th Aug 2026386 PMAQI
9th Aug 2026387 PMAQI
9th Aug 2026388 PMAQI
9th Aug 2026429 PMAQI
9th Aug 20264210 PMAQI
9th Aug 20264011 PMAQI
10th Aug 20264012 AMAQI
10th Aug 2026401 AMAQI
10th Aug 2026442 AMAQI
10th Aug 2026423 AMAQI
10th Aug 2026404 AMAQI
10th Aug 2026425 AMAQI
26°C18/35°C
10th Aug 2026446 AMAQI
10th Aug 2026447 AMAQI
10th Aug 2026448 AMAQI
10th Aug 2026449 AMAQI
10th Aug 20264410 AMAQI
10th Aug 20264411 AMAQI
10th Aug 20265012 PMAQI
10th Aug 2026521 PMAQI
10th Aug 2026462 PMAQI
10th Aug 2026463 PMAQI
10th Aug 2026444 PMAQI
10th Aug 2026385 PMAQI
10th Aug 2026386 PMAQI
10th Aug 2026367 PMAQI
10th Aug 2026368 PMAQI
10th Aug 2026389 PMAQI
10th Aug 20263810 PMAQI
10th Aug 20263811 PMAQI
11th Aug 20263612 AMAQI
11th Aug 2026331 AMAQI
11th Aug 2026362 AMAQI
11th Aug 2026333 AMAQI
11th Aug 2026334 AMAQI
11th Aug 2026335 AMAQI
24°C17/33°C
11th Aug 2026366 AMAQI
11th Aug 2026387 AMAQI
11th Aug 2026338 AMAQI
11th Aug 2026339 AMAQI
11th Aug 20263810 AMAQI
11th Aug 20263611 AMAQI
11th Aug 20263412 PMAQI
11th Aug 2026341 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026333 PMAQI
11th Aug 2026334 PMAQI
11th Aug 2026335 PMAQI
11th Aug 2026336 PMAQI
11th Aug 2026317 PMAQI
11th Aug 2026258 PMAQI
11th Aug 2026259 PMAQI
11th Aug 20262510 PMAQI
11th Aug 20262911 PMAQI
12th Aug 20262912 AMAQI
12th Aug 2026271 AMAQI
12th Aug 2026292 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026274 AMAQI
12th Aug 2026295 AMAQI
25°C17/34°C
12th Aug 2026256 AMAQI
12th Aug 2026257 AMAQI
12th Aug 2026318 AMAQI
12th Aug 2026409 AMAQI
12th Aug 20263810 AMAQI
12th Aug 20263111 AMAQI
12th Aug 20263112 PMAQI
12th Aug 2026331 PMAQI
12th Aug 2026362 PMAQI
12th Aug 2026333 PMAQI
12th Aug 2026364 PMAQI
12th Aug 2026315 PMAQI
12th Aug 2026296 PMAQI
12th Aug 2026297 PMAQI
12th Aug 2026258 PMAQI
12th Aug 2026259 PMAQI
12th Aug 20262110 PMAQI
12th Aug 20261911 PMAQI
13th Aug 20263812 AMAQI
13th Aug 2026331 AMAQI
13th Aug 2026332 AMAQI
13th Aug 2026333 AMAQI
13th Aug 2026274 AMAQI
13th Aug 2026295 AMAQI
22°C15/32°C
13th Aug 2026316 AMAQI
13th Aug 2026317 AMAQI
13th Aug 2026348 AMAQI
13th Aug 2026389 AMAQI
13th Aug 20263610 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262712 PMAQI
13th Aug 2026361 PMAQI
13th Aug 2026362 PMAQI
13th Aug 2026333 PMAQI
13th Aug 2026334 PMAQI
13th Aug 2026295 PMAQI
13th Aug 2026296 PMAQI
13th Aug 2026297 PMAQI
13th Aug 2026318 PMAQI
13th Aug 2026279 PMAQI
13th Aug 20262710 PMAQI
13th Aug 20263311 PMAQI
14th Aug 20263312 AMAQI
14th Aug 2026331 AMAQI
14th Aug 2026272 AMAQI
14th Aug 2026323 AMAQI
14th Aug 2026364 AMAQI
14th Aug 2026365 AMAQI
18°C13/25°C
14th Aug 2026276 AMAQI
14th Aug 2026317 AMAQI
14th Aug 2026318 AMAQI
14th Aug 2026339 AMAQI
14th Aug 20263310 AMAQI
14th Aug 20263311 AMAQI
14th Aug 20263612 PMAQI
14th Aug 2026331 PMAQI
14th Aug 2026402 PMAQI
14th Aug 2026363 PMAQI
14th Aug 2026194 PMAQI
14th Aug 2026185 PMAQI
14th Aug 2026136 PMAQI
14th Aug 2026107 PMAQI
14th Aug 2026298 PMAQI
14th Aug 2026489 PMAQI
14th Aug 20263410 PMAQI
14th Aug 20263111 PMAQI
15th Aug 20262912 AMAQI
15th Aug 2026321 AMAQI
15th Aug 2026382 AMAQI
15th Aug 2026383 AMAQI
15th Aug 2026344 AMAQI
15th Aug 2026275 AMAQI
19°C12/28°C
15th Aug 2026256 AMAQI
15th Aug 2026327 AMAQI
15th Aug 2026388 AMAQI
15th Aug 2026299 AMAQI
15th Aug 20263210 AMAQI
15th Aug 20263411 AMAQI
15th Aug 20262512 PMAQI
15th Aug 2026291 PMAQI
15th Aug 2026292 PMAQI
15th Aug 2026123 PMAQI
15th Aug 2026234 PMAQI
15th Aug 2026345 PMAQI
15th Aug 2026196 PMAQI
15th Aug 2026297 PMAQI
15th Aug 2026278 PMAQI
15th Aug 2026179 PMAQI
15th Aug 20262910 PMAQI
15th Aug 20262511 PMAQI
16th Aug 20264212 AMAQI
16th Aug 2026101 AMAQI
16th Aug 2026132 AMAQI
16th Aug 2026123 AMAQI
16th Aug 2026234 AMAQI
16th Aug 2026385 AMAQI
20°C14/28°C
16th Aug 2026256 AMAQI
16th Aug 2026297 AMAQI
16th Aug 2026298 AMAQI
16th Aug 2026349 AMAQI
16th Aug 20263810 AMAQI
16th Aug 20263811 AMAQI
16th Aug 20263112 PMAQI
16th Aug 2026311 PMAQI
16th Aug 2026252 PMAQI
16th Aug 2026293 PMAQI
16th Aug 2026114 PMAQI
16th Aug 2026105 PMAQI
16th Aug 2026106 PMAQI
16th Aug 2026117 PMAQI
16th Aug 2026108 PMAQI
16th Aug 2026109 PMAQI
16th Aug 20261010 PMAQI
16th Aug 20261011 PMAQI
17th Aug 2026912 AMAQI
17th Aug 2026101 AMAQI
17th Aug 2026102 AMAQI
17th Aug 202683 AMAQI
17th Aug 2026104 AMAQI
17th Aug 202695 AMAQI
16°C11/29°C
17th Aug 2026146 AMAQI
17th Aug 2026197 AMAQI
17th Aug 2026338 AMAQI
17th Aug 2026299 AMAQI
17th Aug 20263310 AMAQI
17th Aug 20263811 AMAQI
17th Aug 20265012 PMAQI
17th Aug 2026531 PMAQI
17th Aug 2026422 PMAQI
17th Aug 2026383 PMAQI
17th Aug 2026334 PMAQI
17th Aug 2026165 PMAQI
17th Aug 2026196 PMAQI
17th Aug 2026167 PMAQI
17th Aug 2026198 PMAQI
17th Aug 2026209 PMAQI
17th Aug 20262010 PMAQI
17th Aug 20261811 PMAQI
18th Aug 20261712 AMAQI
18th Aug 2026291 AMAQI
18th Aug 2026332 AMAQI
18th Aug 2026333 AMAQI
18th Aug 2026384 AMAQI
18th Aug 2026365 AMAQI
23°C16/31°C
18th Aug 2026296 AMAQI
6 AM18th Aug 2026257 AMAQI
18th Aug 2026368 AMAQI
18th Aug 2026639 AMAQI
18th Aug 20265010 AMAQI
18th Aug 20265211 AMAQI
18th Aug 20264812 PMAQI
18th Aug 2026401 PMAQI
1 PM18th Aug 2026462 PMAQI
18th Aug 2026293 PMAQI
18th Aug 2026194 PMAQI
18th Aug 2026185 PMAQI
18th Aug 2026206 PMAQI
8 PM
1 AM
5 AM
23°C17/29°C
Day time
Avg. Highest Time
10 AM
41AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
6 PM
33AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 41), while the lowest AQI was between 6 PM to 6 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM
38AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
1 AM - 11 PM
36AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 38), while the lowest AQI was between 1 AM to 11 PM (Avg. 36).
2026 Days Vs Air Quality
Reservoir Road, Boulder, Colorado, United States
2026
97%
220
3%
6
Total number of days with different AQI categories in last 230 days in 2026 (135 days remaining)
Good
220 DaysModerate
6 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 230 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 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
26AQI (US)
26AQI (US)
2nd January 2026
26AQI (US)
26AQI (US)
3rd January 2026
32AQI (US)
32AQI (US)
4th January 2026
24AQI (US)
24AQI (US)
5th January 2026
26AQI (US)
26AQI (US)
6th January 2026
19AQI (US)
19AQI (US)
7th January 2026
21AQI (US)
21AQI (US)
8th January 2026
18AQI (US)
18AQI (US)
9th January 2026
19AQI (US)
19AQI (US)
10th January 2026
18AQI (US)
18AQI (US)
11th January 2026
22AQI (US)
22AQI (US)
12th January 2026
34AQI (US)
34AQI (US)
13th January 2026
24AQI (US)
24AQI (US)
14th January 2026
13AQI (US)
13AQI (US)
15th January 2026
24AQI (US)
24AQI (US)
16th January 2026
25AQI (US)
25AQI (US)
17th January 2026
13AQI (US)
13AQI (US)
18th January 2026
17AQI (US)
17AQI (US)
19th January 2026
22AQI (US)
22AQI (US)
20th January 2026
42AQI (US)
42AQI (US)
21st January 2026
21AQI (US)
21AQI (US)
22nd January 2026
26AQI (US)
26AQI (US)
23rd January 2026
23AQI (US)
23AQI (US)
24th January 2026
30AQI (US)
30AQI (US)
25th January 2026
22AQI (US)
22AQI (US)
26th January 2026
29AQI (US)
29AQI (US)
27th January 2026
22AQI (US)
22AQI (US)
28th January 2026
30AQI (US)
30AQI (US)
29th January 2026
31AQI (US)
31AQI (US)
30th January 2026
35AQI (US)
35AQI (US)
31st January 2026
24AQI (US)
24AQI (US)
1st February 2026
22AQI (US)
22AQI (US)
2nd February 2026
25AQI (US)
25AQI (US)
3rd February 2026
21AQI (US)
21AQI (US)
4th February 2026
27AQI (US)
27AQI (US)
5th February 2026
23AQI (US)
23AQI (US)
6th February 2026
22AQI (US)
22AQI (US)
7th February 2026
22AQI (US)
22AQI (US)
8th February 2026
26AQI (US)
26AQI (US)
9th February 2026
26AQI (US)
26AQI (US)
10th February 2026
23AQI (US)
23AQI (US)
11th February 2026
26AQI (US)
26AQI (US)
12th February 2026
26AQI (US)
26AQI (US)
13th February 2026
23AQI (US)
23AQI (US)
14th February 2026
28AQI (US)
28AQI (US)
15th February 2026
21AQI (US)
21AQI (US)
16th February 2026
24AQI (US)
24AQI (US)
17th February 2026
32AQI (US)
32AQI (US)
18th February 2026
20AQI (US)
20AQI (US)
19th February 2026
25AQI (US)
25AQI (US)
20th February 2026
19AQI (US)
19AQI (US)
21st February 2026
18AQI (US)
18AQI (US)
22nd February 2026
19AQI (US)
19AQI (US)
23rd February 2026
24AQI (US)
24AQI (US)
24th February 2026
31AQI (US)
31AQI (US)
25th February 2026
28AQI (US)
28AQI (US)
26th February 2026
19AQI (US)
19AQI (US)
27th February 2026
20AQI (US)
20AQI (US)
28th February 2026
18AQI (US)
18AQI (US)
1st March 2026
22AQI (US)
22AQI (US)
2nd March 2026
31AQI (US)
31AQI (US)
3rd March 2026
17AQI (US)
17AQI (US)
4th March 2026
19AQI (US)
19AQI (US)
5th March 2026
20AQI (US)
20AQI (US)
6th March 2026
28AQI (US)
28AQI (US)
7th March 2026
26AQI (US)
26AQI (US)
8th March 2026
27AQI (US)
27AQI (US)
9th March 2026
23AQI (US)
23AQI (US)
10th March 2026
22AQI (US)
22AQI (US)
11th March 2026
20AQI (US)
20AQI (US)
12th March 2026
27AQI (US)
27AQI (US)
13th March 2026
21AQI (US)
21AQI (US)
14th March 2026
28AQI (US)
28AQI (US)
15th March 2026
19AQI (US)
19AQI (US)
16th March 2026
23AQI (US)
23AQI (US)
17th March 2026
21AQI (US)
21AQI (US)
18th March 2026
23AQI (US)
23AQI (US)
19th March 2026
19AQI (US)
19AQI (US)
20th March 2026
23AQI (US)
23AQI (US)
21st March 2026
18AQI (US)
18AQI (US)
22nd March 2026
25AQI (US)
25AQI (US)
23rd March 2026
24AQI (US)
24AQI (US)
24th March 2026
24AQI (US)
24AQI (US)
25th March 2026
21AQI (US)
21AQI (US)
26th March 2026
40AQI (US)
40AQI (US)
27th March 2026
25AQI (US)
25AQI (US)
28th March 2026
22AQI (US)
22AQI (US)
29th March 2026
21AQI (US)
21AQI (US)
30th March 2026
25AQI (US)
25AQI (US)
31st March 2026
31AQI (US)
31AQI (US)
1st April 2026
30AQI (US)
30AQI (US)
2nd April 2026
20AQI (US)
20AQI (US)
3rd April 2026
27AQI (US)
27AQI (US)
4th April 2026
17AQI (US)
17AQI (US)
5th April 2026
20AQI (US)
20AQI (US)
6th April 2026
23AQI (US)
23AQI (US)
7th April 2026
29AQI (US)
29AQI (US)
8th April 2026
30AQI (US)
30AQI (US)
9th April 2026
26AQI (US)
26AQI (US)
10th April 2026
31AQI (US)
31AQI (US)
11th April 2026
21AQI (US)
21AQI (US)
12th April 2026
15AQI (US)
15AQI (US)
13th April 2026
18AQI (US)
18AQI (US)
14th April 2026
19AQI (US)
19AQI (US)
15th April 2026
23AQI (US)
23AQI (US)
16th April 2026
21AQI (US)
21AQI (US)
17th April 2026
18th April 2026
20AQI (US)
20AQI (US)
19th April 2026
18AQI (US)
18AQI (US)
20th April 2026
23AQI (US)
23AQI (US)
21st April 2026
22AQI (US)
22AQI (US)
22nd April 2026
23rd April 2026
35AQI (US)
35AQI (US)
24th April 2026
22AQI (US)
22AQI (US)
25th April 2026
19AQI (US)
19AQI (US)
26th April 2026
18AQI (US)
18AQI (US)
27th April 2026
16AQI (US)
16AQI (US)
28th April 2026
20AQI (US)
20AQI (US)
29th April 2026
16AQI (US)
16AQI (US)
30th April 2026
18AQI (US)
18AQI (US)
1st May 2026
16AQI (US)
16AQI (US)
2nd May 2026
13AQI (US)
13AQI (US)
3rd May 2026
13AQI (US)
13AQI (US)
4th May 2026
21AQI (US)
21AQI (US)
5th May 2026
27AQI (US)
27AQI (US)
6th May 2026
22AQI (US)
22AQI (US)
7th May 2026
14AQI (US)
14AQI (US)
8th May 2026
17AQI (US)
17AQI (US)
9th May 2026
10th May 2026
24AQI (US)
24AQI (US)
11th May 2026
17AQI (US)
17AQI (US)
12th May 2026
27AQI (US)
27AQI (US)
13th May 2026
36AQI (US)
36AQI (US)
14th May 2026
31AQI (US)
31AQI (US)
15th May 2026
28AQI (US)
28AQI (US)
16th May 2026
23AQI (US)
23AQI (US)
17th May 2026
18AQI (US)
18AQI (US)
18th May 2026
34AQI (US)
34AQI (US)
19th May 2026
29AQI (US)
29AQI (US)
20th May 2026
18AQI (US)
18AQI (US)
21st May 2026
20AQI (US)
20AQI (US)
22nd May 2026
20AQI (US)
20AQI (US)
23rd May 2026
21AQI (US)
21AQI (US)
24th May 2026
17AQI (US)
17AQI (US)
25th May 2026
18AQI (US)
18AQI (US)
26th May 2026
18AQI (US)
18AQI (US)
27th May 2026
15AQI (US)
15AQI (US)
28th May 2026
19AQI (US)
19AQI (US)
29th May 2026
17AQI (US)
17AQI (US)
30th May 2026
14AQI (US)
14AQI (US)
31st May 2026
15AQI (US)
15AQI (US)
1st June 2026
16AQI (US)
16AQI (US)
2nd June 2026
17AQI (US)
17AQI (US)
3rd June 2026
20AQI (US)
20AQI (US)
4th June 2026
19AQI (US)
19AQI (US)
5th June 2026
26AQI (US)
26AQI (US)
6th June 2026
22AQI (US)
22AQI (US)
7th June 2026
22AQI (US)
22AQI (US)
8th June 2026
26AQI (US)
26AQI (US)
9th June 2026
22AQI (US)
22AQI (US)
10th June 2026
32AQI (US)
32AQI (US)
11th June 2026
28AQI (US)
28AQI (US)
12th June 2026
25AQI (US)
25AQI (US)
13th June 2026
24AQI (US)
24AQI (US)
14th June 2026
21AQI (US)
21AQI (US)
15th June 2026
22AQI (US)
22AQI (US)
16th June 2026
23AQI (US)
23AQI (US)
17th June 2026
31AQI (US)
31AQI (US)
18th June 2026
30AQI (US)
30AQI (US)
19th June 2026
36AQI (US)
36AQI (US)
20th June 2026
39AQI (US)
39AQI (US)
21st June 2026
25AQI (US)
25AQI (US)
22nd June 2026
24AQI (US)
24AQI (US)
23rd June 2026
36AQI (US)
36AQI (US)
24th June 2026
23AQI (US)
23AQI (US)
25th June 2026
17AQI (US)
17AQI (US)
26th June 2026
14AQI (US)
14AQI (US)
27th June 2026
16AQI (US)
16AQI (US)
28th June 2026
44AQI (US)
44AQI (US)
29th June 2026
28AQI (US)
28AQI (US)
30th June 2026
33AQI (US)
33AQI (US)
1st July 2026
41AQI (US)
41AQI (US)
2nd July 2026
36AQI (US)
36AQI (US)
3rd July 2026
36AQI (US)
36AQI (US)
4th July 2026
26AQI (US)
26AQI (US)
5th July 2026
28AQI (US)
28AQI (US)
6th July 2026
38AQI (US)
38AQI (US)
7th July 2026
42AQI (US)
42AQI (US)
8th July 2026
24AQI (US)
24AQI (US)
9th July 2026
14AQI (US)
14AQI (US)
10th July 2026
16AQI (US)
16AQI (US)
11th July 2026
13AQI (US)
13AQI (US)
12th July 2026
14AQI (US)
14AQI (US)
13th July 2026
21AQI (US)
21AQI (US)
14th July 2026
24AQI (US)
24AQI (US)
15th July 2026
23AQI (US)
23AQI (US)
16th July 2026
25AQI (US)
25AQI (US)
17th July 2026
28AQI (US)
28AQI (US)
18th July 2026
36AQI (US)
36AQI (US)
19th July 2026
30AQI (US)
30AQI (US)
20th July 2026
35AQI (US)
35AQI (US)
21st July 2026
38AQI (US)
38AQI (US)
22nd July 2026
30AQI (US)
30AQI (US)
23rd July 2026
32AQI (US)
32AQI (US)
24th July 2026
32AQI (US)
32AQI (US)
25th July 2026
30AQI (US)
30AQI (US)
26th July 2026
28AQI (US)
28AQI (US)
27th July 2026
27AQI (US)
27AQI (US)
28th July 2026
35AQI (US)
35AQI (US)
29th July 2026
36AQI (US)
36AQI (US)
30th July 2026
30AQI (US)
30AQI (US)
31st July 2026
30AQI (US)
30AQI (US)
1st August 2026
34AQI (US)
34AQI (US)
2nd August 2026
31AQI (US)
31AQI (US)
3rd August 2026
59AQI (US)
59AQI (US)
4th August 2026
64AQI (US)
64AQI (US)
5th August 2026
55AQI (US)
55AQI (US)
6th August 2026
53AQI (US)
53AQI (US)
7th August 2026
56AQI (US)
56AQI (US)
8th August 2026
51AQI (US)
51AQI (US)
9th August 2026
36AQI (US)
36AQI (US)
10th August 2026
42AQI (US)
42AQI (US)
11th August 2026
33AQI (US)
33AQI (US)
12th August 2026
29AQI (US)
29AQI (US)
13th August 2026
32AQI (US)
32AQI (US)
14th August 2026
30AQI (US)
30AQI (US)
15th August 2026
29AQI (US)
29AQI (US)
16th August 2026
22AQI (US)
22AQI (US)
17th August 2026
24AQI (US)
24AQI (US)
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
24AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
21AQI (US)
25AQI (US)
29AQI (US)
40AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202625AQI (US)
31
28
31
28
30
30
31
11
6
220
6
Highest AQI (US) recorded in
August40AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202532AQI (US)
6
29
1
31
30
27
4
25
6
25
5
29
2
30
31
263
18
Highest AQI (US) recorded in
August43AQI (US)
Lowest AQI (US) recorded in
May23AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Most Polluted Year Recorded
2025(Avg.)
32AQI (US)Least Polluted Year Recorded
2026(Avg.)
25AQI (US)Reservoir Road's annual 2026 AQI (US) (25) shows an average percentage change of -21.8% (improved AQI (US)) compared to previous years: 2025 (32).
