Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Waterloo, Iowa, 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

Waterloo, Iowa, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
101AQI
Lowest AQI recorded on
1st Aug 2022
13AQI

Same Day Analysis (1st August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 44 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 31st Jul - 1st Aug 2026

Waterloo, Iowa, United States

AQI
Day
Night
.

5 AM31st Jul 2026

8 PM

4 AM1st Aug 2026

Day time
Avg. Highest Time
2PM31st Jul

48AQI

Avg. Lowest Time
11AM31st Jul

23AQI

Night time
Avg. Highest Time
2AM1st Aug

52AQI

Avg. Lowest Time
3AM1st Aug

25AQI

In the last 24 hours,

Waterloo's AQI reached its highest point of 52 at 2 AM during the Night, while the lowest point, 23, was recorded at 11 AM during the Day between 31st Jul and 1st Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Waterloo, Iowa, United States

JulAug
03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st
Day
Night
3rd Jul 2026305 AMAQI
3rd Jul 2026306 AMAQI
3rd Jul 2026267 AMAQI
3rd Jul 2026308 AMAQI
3rd Jul 2026309 AMAQI
3rd Jul 20262410 AMAQI
3rd Jul 20263111 AMAQI
3rd Jul 20264012 PMAQI
3rd Jul 2026281 PMAQI
3rd Jul 2026282 PMAQI
3rd Jul 2026263 PMAQI
3rd Jul 2026284 PMAQI
3rd Jul 2026255 PMAQI
3rd Jul 2026286 PMAQI
3rd Jul 2026307 PMAQI
3rd Jul 2026228 PMAQI
3rd Jul 2026249 PMAQI
3rd Jul 20262110 PMAQI
3rd Jul 20263111 PMAQI
4th Jul 20263212 AMAQI
4th Jul 2026281 AMAQI
4th Jul 2026422 AMAQI
4th Jul 2026413 AMAQI
4th Jul 2026264 AMAQI

24°C20/30°C

4th Jul 2026265 AMAQI
4th Jul 2026266 AMAQI
4th Jul 2026227 AMAQI
4th Jul 2026578 AMAQI
4th Jul 2026269 AMAQI
4th Jul 20262710 AMAQI
4th Jul 20264811 AMAQI
4th Jul 20262512 PMAQI
4th Jul 2026251 PMAQI
4th Jul 2026252 PMAQI
4th Jul 2026403 PMAQI
4th Jul 2026254 PMAQI
4th Jul 2026265 PMAQI
4th Jul 2026286 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026298 PMAQI
4th Jul 2026299 PMAQI
4th Jul 20262510 PMAQI
4th Jul 20263311 PMAQI
5th Jul 20263812 AMAQI
5th Jul 2026291 AMAQI
5th Jul 2026292 AMAQI
5th Jul 2026293 AMAQI
5th Jul 2026294 AMAQI

24°C20/30°C

5th Jul 2026295 AMAQI
5th Jul 2026506 AMAQI
5th Jul 2026307 AMAQI
5th Jul 2026468 AMAQI
5th Jul 2026489 AMAQI
5th Jul 20264610 AMAQI
5th Jul 20264211 AMAQI
5th Jul 20262812 PMAQI
5th Jul 2026461 PMAQI
5th Jul 2026462 PMAQI
5th Jul 2026453 PMAQI
5th Jul 2026464 PMAQI
5th Jul 2026455 PMAQI
5th Jul 2026466 PMAQI
5th Jul 2026467 PMAQI
5th Jul 2026388 PMAQI
5th Jul 2026219 PMAQI
5th Jul 20262910 PMAQI
5th Jul 20263311 PMAQI
6th Jul 20263312 AMAQI
6th Jul 2026331 AMAQI
6th Jul 2026512 AMAQI
6th Jul 2026513 AMAQI
6th Jul 2026524 AMAQI

24°C18/30°C

6th Jul 2026545 AMAQI
6th Jul 2026336 AMAQI
6th Jul 2026507 AMAQI
6th Jul 2026448 AMAQI
6th Jul 2026469 AMAQI
6th Jul 20263310 AMAQI
6th Jul 20264611 AMAQI
6th Jul 20264812 PMAQI
6th Jul 2026501 PMAQI
6th Jul 2026482 PMAQI
6th Jul 2026463 PMAQI
6th Jul 2026514 PMAQI
6th Jul 2026475 PMAQI
6th Jul 2026446 PMAQI
6th Jul 2026387 PMAQI
6th Jul 2026388 PMAQI
6th Jul 2026429 PMAQI
6th Jul 20264210 PMAQI
6th Jul 20263811 PMAQI
7th Jul 20262912 AMAQI
7th Jul 2026291 AMAQI
7th Jul 2026542 AMAQI
7th Jul 2026443 AMAQI
7th Jul 2026364 AMAQI

25°C20/30°C

7th Jul 2026405 AMAQI
7th Jul 2026386 AMAQI
7th Jul 2026387 AMAQI
7th Jul 2026218 AMAQI
7th Jul 2026219 AMAQI
7th Jul 20262110 AMAQI
7th Jul 20262511 AMAQI
7th Jul 20263312 PMAQI
7th Jul 2026211 PMAQI
7th Jul 2026252 PMAQI
7th Jul 2026213 PMAQI
7th Jul 2026214 PMAQI
7th Jul 2026215 PMAQI
7th Jul 2026296 PMAQI
7th Jul 2026297 PMAQI
7th Jul 2026298 PMAQI
7th Jul 2026449 PMAQI
7th Jul 20264410 PMAQI
7th Jul 20262811 PMAQI
8th Jul 20263312 AMAQI
8th Jul 2026171 AMAQI
8th Jul 2026172 AMAQI
8th Jul 2026173 AMAQI
8th Jul 2026204 AMAQI

25°C19/31°C

8th Jul 2026175 AMAQI
8th Jul 2026216 AMAQI
8th Jul 2026217 AMAQI
8th Jul 2026218 AMAQI
8th Jul 2026219 AMAQI
8th Jul 20262610 AMAQI
8th Jul 20262511 AMAQI
8th Jul 20262512 PMAQI
8th Jul 2026291 PMAQI
8th Jul 2026292 PMAQI
8th Jul 2026363 PMAQI
8th Jul 2026474 PMAQI
8th Jul 2026445 PMAQI
8th Jul 2026386 PMAQI
8th Jul 2026337 PMAQI
8th Jul 2026338 PMAQI
8th Jul 2026259 PMAQI
8th Jul 20262510 PMAQI
8th Jul 20262511 PMAQI
9th Jul 20262512 AMAQI
9th Jul 2026421 AMAQI
9th Jul 2026422 AMAQI
9th Jul 2026423 AMAQI
9th Jul 2026174 AMAQI

26°C21/32°C

9th Jul 2026295 AMAQI
9th Jul 2026226 AMAQI
9th Jul 2026427 AMAQI
9th Jul 2026288 AMAQI
9th Jul 2026289 AMAQI
9th Jul 20262610 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20262212 PMAQI
9th Jul 2026301 PMAQI
9th Jul 2026282 PMAQI
9th Jul 2026313 PMAQI
9th Jul 2026124 PMAQI
9th Jul 2026225 PMAQI
9th Jul 2026126 PMAQI
9th Jul 2026207 PMAQI
9th Jul 2026128 PMAQI
9th Jul 2026189 PMAQI
9th Jul 20269210 PMAQI
9th Jul 20262611 PMAQI
10th Jul 20262612 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026252 AMAQI
10th Jul 2026323 AMAQI
10th Jul 2026504 AMAQI

23°C19/29°C

10th Jul 2026405 AMAQI
10th Jul 2026446 AMAQI
10th Jul 2026217 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026219 AMAQI
10th Jul 20262110 AMAQI
10th Jul 20262111 AMAQI
10th Jul 20262112 PMAQI
10th Jul 2026211 PMAQI
10th Jul 2026212 PMAQI
10th Jul 2026213 PMAQI
10th Jul 2026214 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026346 PMAQI
10th Jul 2026347 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026299 PMAQI
10th Jul 20262510 PMAQI
10th Jul 20262511 PMAQI
11th Jul 20262912 AMAQI
11th Jul 2026261 AMAQI
11th Jul 2026442 AMAQI
11th Jul 2026643 AMAQI
11th Jul 2026464 AMAQI

25°C20/31°C

11th Jul 2026475 AMAQI
11th Jul 2026296 AMAQI
11th Jul 2026297 AMAQI
11th Jul 2026258 AMAQI
11th Jul 2026259 AMAQI
11th Jul 20262910 AMAQI
11th Jul 20264411 AMAQI
11th Jul 20264212 PMAQI
11th Jul 2026441 PMAQI
11th Jul 2026302 PMAQI
11th Jul 2026293 PMAQI
11th Jul 2026294 PMAQI
11th Jul 2026335 PMAQI
11th Jul 2026306 PMAQI
11th Jul 2026307 PMAQI
11th Jul 2026428 PMAQI
11th Jul 2026409 PMAQI
11th Jul 20264010 PMAQI
11th Jul 20262611 PMAQI
12th Jul 20263312 AMAQI
12th Jul 2026331 AMAQI
12th Jul 2026272 AMAQI
12th Jul 2026463 AMAQI
12th Jul 2026304 AMAQI

25°C19/31°C

12th Jul 2026295 AMAQI
12th Jul 2026336 AMAQI
12th Jul 2026467 AMAQI
12th Jul 2026308 AMAQI
12th Jul 2026489 AMAQI
12th Jul 20264810 AMAQI
12th Jul 20264411 AMAQI
12th Jul 20264612 PMAQI
12th Jul 2026291 PMAQI
12th Jul 2026382 PMAQI
12th Jul 2026403 PMAQI
12th Jul 2026544 PMAQI
12th Jul 2026545 PMAQI
12th Jul 2026296 PMAQI
12th Jul 2026297 PMAQI
12th Jul 2026298 PMAQI
12th Jul 2026299 PMAQI
12th Jul 20262910 PMAQI
12th Jul 20263311 PMAQI
13th Jul 20263312 AMAQI
13th Jul 2026331 AMAQI
13th Jul 2026332 AMAQI
13th Jul 2026363 AMAQI
13th Jul 2026334 AMAQI

24°C17/31°C

13th Jul 2026335 AMAQI
13th Jul 2026336 AMAQI
13th Jul 2026337 AMAQI
13th Jul 2026348 AMAQI
13th Jul 2026349 AMAQI
13th Jul 20264610 AMAQI
13th Jul 20264811 AMAQI
13th Jul 20264412 PMAQI
13th Jul 2026291 PMAQI
13th Jul 2026292 PMAQI
13th Jul 2026293 PMAQI
13th Jul 2026294 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026256 PMAQI
13th Jul 2026427 PMAQI
13th Jul 2026408 PMAQI
13th Jul 2026389 PMAQI
13th Jul 20264210 PMAQI
13th Jul 20262911 PMAQI
14th Jul 20263312 AMAQI
14th Jul 2026421 AMAQI
14th Jul 2026462 AMAQI
14th Jul 2026443 AMAQI
14th Jul 2026464 AMAQI

25°C17/32°C

14th Jul 2026305 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026287 AMAQI
14th Jul 2026258 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20263610 AMAQI
14th Jul 20263811 AMAQI
14th Jul 20263212 PMAQI
14th Jul 2026321 PMAQI
14th Jul 2026372 PMAQI
14th Jul 2026333 PMAQI
14th Jul 2026294 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026326 PMAQI
14th Jul 2026387 PMAQI
14th Jul 2026328 PMAQI
14th Jul 2026269 PMAQI
14th Jul 20263010 PMAQI
14th Jul 20262211 PMAQI
15th Jul 20262312 AMAQI
15th Jul 2026441 AMAQI
15th Jul 2026962 AMAQI
15th Jul 2026513 AMAQI
15th Jul 2026294 AMAQI

26°C19/34°C

15th Jul 2026295 AMAQI
15th Jul 2026296 AMAQI
15th Jul 2026847 AMAQI
15th Jul 2026298 AMAQI
15th Jul 2026529 AMAQI
15th Jul 20264210 AMAQI
15th Jul 20264211 AMAQI
15th Jul 20264012 PMAQI
15th Jul 2026461 PMAQI
15th Jul 2026492 PMAQI
15th Jul 2026443 PMAQI
15th Jul 2026424 PMAQI
15th Jul 2026335 PMAQI
15th Jul 2026426 PMAQI
15th Jul 20261087 PMAQI
15th Jul 2026408 PMAQI
15th Jul 2026629 PMAQI
15th Jul 202613810 PMAQI
15th Jul 202611411 PMAQI
16th Jul 202615912 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026262 AMAQI
16th Jul 20261123 AMAQI
16th Jul 2026304 AMAQI

27°C20/34°C

16th Jul 20261075 AMAQI
16th Jul 20262116 AMAQI
16th Jul 20261227 AMAQI
16th Jul 20261488 AMAQI
16th Jul 2026319 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20263211 AMAQI
16th Jul 202629412 PMAQI
16th Jul 2026301 PMAQI
16th Jul 20261352 PMAQI
16th Jul 20261273 PMAQI
16th Jul 20261024 PMAQI
16th Jul 20261335 PMAQI
16th Jul 2026546 PMAQI
16th Jul 20261077 PMAQI
16th Jul 2026308 PMAQI
16th Jul 2026299 PMAQI
16th Jul 20262910 PMAQI
16th Jul 20263111 PMAQI
17th Jul 20262712 AMAQI
17th Jul 2026281 AMAQI
17th Jul 2026342 AMAQI
17th Jul 2026393 AMAQI
17th Jul 2026444 AMAQI

28°C22/34°C

17th Jul 2026405 AMAQI
17th Jul 2026446 AMAQI
17th Jul 2026697 AMAQI
17th Jul 2026758 AMAQI
17th Jul 2026789 AMAQI
17th Jul 20264610 AMAQI
17th Jul 20264811 AMAQI
17th Jul 20264912 PMAQI
17th Jul 2026501 PMAQI
17th Jul 2026492 PMAQI
17th Jul 2026443 PMAQI
17th Jul 2026464 PMAQI
17th Jul 2026405 PMAQI
17th Jul 2026426 PMAQI
17th Jul 2026447 PMAQI
17th Jul 2026428 PMAQI
17th Jul 2026509 PMAQI
17th Jul 20264810 PMAQI
17th Jul 20264211 PMAQI
18th Jul 20264212 AMAQI
18th Jul 2026461 AMAQI
18th Jul 2026462 AMAQI
18th Jul 2026463 AMAQI
18th Jul 2026424 AMAQI

28°C21/34°C

18th Jul 2026425 AMAQI
18th Jul 2026466 AMAQI
18th Jul 2026427 AMAQI
18th Jul 2026568 AMAQI
18th Jul 2026499 AMAQI
18th Jul 20265210 AMAQI
18th Jul 20265911 AMAQI
18th Jul 20265912 PMAQI
18th Jul 2026521 PMAQI
18th Jul 2026442 PMAQI
18th Jul 2026533 PMAQI
18th Jul 2026514 PMAQI
18th Jul 2026515 PMAQI
18th Jul 2026536 PMAQI
18th Jul 2026577 PMAQI
18th Jul 2026628 PMAQI
18th Jul 2026579 PMAQI
18th Jul 20265310 PMAQI
18th Jul 20265411 PMAQI
19th Jul 20264812 AMAQI
19th Jul 2026531 AMAQI
19th Jul 2026482 AMAQI
19th Jul 2026523 AMAQI
19th Jul 2026524 AMAQI

27°C22/31°C

19th Jul 2026565 AMAQI
19th Jul 2026596 AMAQI
19th Jul 2026657 AMAQI
19th Jul 2026748 AMAQI
19th Jul 2026989 AMAQI
19th Jul 202611610 AMAQI
19th Jul 202612211 AMAQI
19th Jul 202612212 PMAQI
19th Jul 2026801 PMAQI
19th Jul 2026752 PMAQI
19th Jul 20261583 PMAQI
19th Jul 20261174 PMAQI
19th Jul 20261495 PMAQI
19th Jul 20261166 PMAQI
19th Jul 20261457 PMAQI
19th Jul 2026818 PMAQI
19th Jul 20261049 PMAQI
19th Jul 202611810 PMAQI
19th Jul 202611011 PMAQI
20th Jul 202615012 AMAQI
20th Jul 20261401 AMAQI
20th Jul 20261042 AMAQI
20th Jul 20261403 AMAQI
20th Jul 20261384 AMAQI

24°C18/30°C

20th Jul 20261345 AMAQI
20th Jul 20261366 AMAQI
20th Jul 20261327 AMAQI
20th Jul 20261088 AMAQI
20th Jul 20261349 AMAQI
20th Jul 20268610 AMAQI
20th Jul 202612311 AMAQI
20th Jul 20267012 PMAQI
20th Jul 2026681 PMAQI
20th Jul 2026692 PMAQI
20th Jul 2026573 PMAQI
20th Jul 2026564 PMAQI
20th Jul 2026595 PMAQI
20th Jul 2026536 PMAQI
20th Jul 2026507 PMAQI
20th Jul 2026488 PMAQI
20th Jul 2026449 PMAQI
20th Jul 20264311 PMAQI
21st Jul 20265412 AMAQI
21st Jul 2026421 AMAQI
21st Jul 2026512 AMAQI
21st Jul 2026603 AMAQI
21st Jul 2026584 AMAQI

25°C20/33°C

21st Jul 2026545 AMAQI
21st Jul 2026566 AMAQI
21st Jul 2026627 AMAQI
21st Jul 2026688 AMAQI
21st Jul 2026589 AMAQI
21st Jul 20264910 AMAQI
21st Jul 20265111 AMAQI
21st Jul 20264612 PMAQI
21st Jul 2026511 PMAQI
21st Jul 2026502 PMAQI
21st Jul 2026443 PMAQI
21st Jul 2026464 PMAQI
21st Jul 2026485 PMAQI
21st Jul 2026486 PMAQI
21st Jul 2026537 PMAQI
21st Jul 2026578 PMAQI
21st Jul 2026569 PMAQI
21st Jul 20265810 PMAQI
21st Jul 20265911 PMAQI
22nd Jul 20265812 AMAQI
22nd Jul 2026581 AMAQI
22nd Jul 2026542 AMAQI
22nd Jul 2026623 AMAQI
22nd Jul 2026594 AMAQI

22°C19/26°C

22nd Jul 2026595 AMAQI
22nd Jul 2026516 AMAQI
22nd Jul 2026427 AMAQI
22nd Jul 2026518 AMAQI
22nd Jul 2026409 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20265211 AMAQI
22nd Jul 20265112 PMAQI
22nd Jul 2026591 PMAQI
22nd Jul 2026622 PMAQI
22nd Jul 2026523 PMAQI
22nd Jul 2026484 PMAQI
22nd Jul 2026505 PMAQI
22nd Jul 2026506 PMAQI
22nd Jul 2026347 PMAQI
22nd Jul 2026298 PMAQI
22nd Jul 2026639 PMAQI
22nd Jul 20265410 PMAQI
22nd Jul 20264611 PMAQI
23rd Jul 20264012 AMAQI
23rd Jul 2026641 AMAQI
23rd Jul 2026542 AMAQI
23rd Jul 2026483 AMAQI
23rd Jul 2026344 AMAQI

19°C14/24°C

23rd Jul 2026445 AMAQI
23rd Jul 2026316 AMAQI
23rd Jul 2026447 AMAQI
23rd Jul 2026408 AMAQI
23rd Jul 2026259 AMAQI
23rd Jul 20264210 AMAQI
23rd Jul 20265011 AMAQI
23rd Jul 20265212 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026422 PMAQI
23rd Jul 2026423 PMAQI
23rd Jul 2026384 PMAQI
23rd Jul 2026305 PMAQI
23rd Jul 2026216 PMAQI
23rd Jul 2026387 PMAQI
23rd Jul 2026318 PMAQI
23rd Jul 2026269 PMAQI
23rd Jul 20265010 PMAQI
23rd Jul 20264911 PMAQI
24th Jul 20264212 AMAQI
24th Jul 2026401 AMAQI
24th Jul 2026342 AMAQI
24th Jul 2026463 AMAQI
24th Jul 2026214 AMAQI

20°C12/27°C

24th Jul 2026465 AMAQI
24th Jul 2026366 AMAQI
24th Jul 2026387 AMAQI
24th Jul 2026388 AMAQI
24th Jul 2026369 AMAQI
24th Jul 20264210 AMAQI
24th Jul 20264411 AMAQI
24th Jul 20263812 PMAQI
24th Jul 2026421 PMAQI
24th Jul 2026402 PMAQI
24th Jul 2026463 PMAQI
24th Jul 2026544 PMAQI
24th Jul 2026485 PMAQI
24th Jul 2026406 PMAQI
24th Jul 2026447 PMAQI
24th Jul 2026408 PMAQI
24th Jul 2026409 PMAQI
24th Jul 20264610 PMAQI
24th Jul 20264611 PMAQI
25th Jul 20265112 AMAQI
25th Jul 2026471 AMAQI
25th Jul 2026482 AMAQI
25th Jul 2026493 AMAQI
25th Jul 2026534 AMAQI

22°C17/27°C

25th Jul 2026535 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026487 AMAQI
25th Jul 2026488 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20265010 AMAQI
25th Jul 20264611 AMAQI
25th Jul 20265212 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026502 PMAQI
25th Jul 2026483 PMAQI
25th Jul 2026484 PMAQI
25th Jul 2026445 PMAQI
25th Jul 2026466 PMAQI
25th Jul 2026447 PMAQI
25th Jul 2026468 PMAQI
25th Jul 2026469 PMAQI
25th Jul 20264610 PMAQI
25th Jul 20264411 PMAQI
26th Jul 20264912 AMAQI
26th Jul 2026401 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026403 AMAQI
26th Jul 2026404 AMAQI

24°C20/30°C

26th Jul 2026405 AMAQI
26th Jul 2026426 AMAQI
26th Jul 2026407 AMAQI
26th Jul 2026408 AMAQI
26th Jul 2026449 AMAQI
26th Jul 20264010 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20264412 PMAQI
26th Jul 2026511 PMAQI
26th Jul 2026512 PMAQI
26th Jul 2026563 PMAQI
26th Jul 2026424 PMAQI
26th Jul 2026445 PMAQI
26th Jul 2026426 PMAQI
26th Jul 2026467 PMAQI
26th Jul 2026498 PMAQI
26th Jul 2026489 PMAQI
26th Jul 20264610 PMAQI
26th Jul 20264811 PMAQI
27th Jul 20265012 AMAQI
27th Jul 2026501 AMAQI
27th Jul 2026462 AMAQI
27th Jul 2026493 AMAQI
27th Jul 2026504 AMAQI

28°C22/37°C

27th Jul 2026505 AMAQI
27th Jul 2026486 AMAQI
27th Jul 2026487 AMAQI
27th Jul 2026498 AMAQI
27th Jul 2026509 AMAQI
27th Jul 20266210 AMAQI
27th Jul 20266011 AMAQI
27th Jul 20265412 PMAQI
27th Jul 2026531 PMAQI
27th Jul 2026542 PMAQI
27th Jul 2026463 PMAQI
27th Jul 2026534 PMAQI
27th Jul 2026465 PMAQI
27th Jul 2026546 PMAQI
27th Jul 2026537 PMAQI
27th Jul 2026498 PMAQI
27th Jul 2026469 PMAQI
27th Jul 20265310 PMAQI
27th Jul 20265511 PMAQI
28th Jul 20265712 AMAQI
28th Jul 2026601 AMAQI
28th Jul 2026582 AMAQI
28th Jul 2026583 AMAQI
28th Jul 2026644 AMAQI

30°C24/37°C

28th Jul 2026605 AMAQI
28th Jul 2026516 AMAQI
28th Jul 2026487 AMAQI
28th Jul 2026428 AMAQI
28th Jul 2026569 AMAQI
28th Jul 20265510 AMAQI
28th Jul 20264611 AMAQI
28th Jul 20265212 PMAQI
28th Jul 2026551 PMAQI
28th Jul 2026502 PMAQI
28th Jul 2026443 PMAQI
28th Jul 2026524 PMAQI
28th Jul 2026525 PMAQI
28th Jul 2026566 PMAQI
28th Jul 2026607 PMAQI
28th Jul 2026578 PMAQI
28th Jul 2026579 PMAQI
28th Jul 20266510 PMAQI
28th Jul 20266311 PMAQI
29th Jul 20266412 AMAQI
29th Jul 2026631 AMAQI
29th Jul 2026592 AMAQI
29th Jul 2026533 AMAQI
29th Jul 2026524 AMAQI

26°C21/31°C

29th Jul 2026505 AMAQI
29th Jul 2026446 AMAQI
29th Jul 2026407 AMAQI
29th Jul 2026508 AMAQI
29th Jul 2026529 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20264611 AMAQI
29th Jul 20266412 PMAQI
29th Jul 2026601 PMAQI
29th Jul 2026652 PMAQI
29th Jul 2026523 PMAQI
29th Jul 2026494 PMAQI
29th Jul 2026505 PMAQI
29th Jul 2026466 PMAQI
29th Jul 2026527 PMAQI
29th Jul 2026488 PMAQI
29th Jul 2026489 PMAQI
29th Jul 20264610 PMAQI
29th Jul 20264811 PMAQI
30th Jul 20265012 AMAQI
30th Jul 2026441 AMAQI
30th Jul 2026402 AMAQI
30th Jul 2026493 AMAQI
30th Jul 2026514 AMAQI

25°C19/31°C

30th Jul 2026485 AMAQI
30th Jul 2026446 AMAQI
30th Jul 2026517 AMAQI
30th Jul 2026588 AMAQI
30th Jul 2026529 AMAQI
30th Jul 20266310 AMAQI
30th Jul 20267011 AMAQI
30th Jul 20266412 PMAQI
30th Jul 2026601 PMAQI
30th Jul 2026542 PMAQI
30th Jul 2026403 PMAQI
30th Jul 2026364 PMAQI
30th Jul 2026425 PMAQI
30th Jul 2026366 PMAQI
30th Jul 2026527 PMAQI
30th Jul 2026488 PMAQI
30th Jul 2026499 PMAQI
30th Jul 20264610 PMAQI
30th Jul 20264611 PMAQI
31st Jul 20265112 AMAQI
31st Jul 2026501 AMAQI
31st Jul 2026422 AMAQI
31st Jul 2026443 AMAQI
31st Jul 2026404 AMAQI

24°C17/31°C

31st Jul 2026425 AMAQI
31st Jul 2026346 AMAQI
31st Jul 2026407 AMAQI
31st Jul 2026388 AMAQI
31st Jul 2026469 AMAQI
31st Jul 20263810 AMAQI
31st Jul 20262311 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026381 PMAQI
31st Jul 2026482 PMAQI
31st Jul 2026423 PMAQI
31st Jul 2026344 PMAQI
31st Jul 2026305 PMAQI
31st Jul 2026276 PMAQI
31st Jul 2026367 PMAQI
31st Jul 2026318 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20263410 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20263812 AMAQI
1st Aug 2026471 AMAQI
1st Aug 2026522 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026424 AMAQI

21°C19/25°C

1st Aug 2026545 AMAQI
5 AM
1st Aug 2026326 AMAQI
1st Aug 2026427 AMAQI
1st Aug 2026488 AMAQI
1st Aug 2026489 AMAQI
1st Aug 20264810 AMAQI
1st Aug 20264911 AMAQI
1st Aug 20264412 PMAQI
12 PM
1st Aug 2026461 PMAQI
1st Aug 2026462 PMAQI
1st Aug 2026483 PMAQI
1st Aug 2026424 PMAQI
1st Aug 2026425 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026467 PMAQI
1st Aug 2026408 PMAQI
8 PM
1st Aug 2026449 PMAQI
1st Aug 20264010 PMAQI
1st Aug 20264211 PMAQI
12 AM
4 AM

21°C17/28°C

Day time
Avg. Highest Time
12 PM

54AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
8 PM

40AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 12 PM (Avg. 54), while the lowest AQI was between 8 PM to 8 PM (Avg. 40).
Night time
Avg. Highest Time
3 AM

50AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
9 PM

42AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 3 AM (Avg. 50), while the lowest AQI was between 9 PM to 9 PM (Avg. 42).

2026 Days Vs Air Quality

Waterloo, Iowa, United States

2026

90%

189

10%

21

Total number of days with different AQI categories in last 213 days in 2026 (152 days remaining)

Good
189 Days
Moderate
21 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 90%

Health Risk Level:

Very Low

In 2026, 90% of 213 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

Waterloo, Iowa, 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
36AQI (US)
2nd January 2026
42AQI (US)
3rd January 2026
44AQI (US)
4th January 2026
45AQI (US)
5th January 2026
47AQI (US)
6th January 2026
61AQI (US)
7th January 2026
42AQI (US)
8th January 2026
38AQI (US)
9th January 2026
38AQI (US)
10th January 2026
42AQI (US)
11th January 2026
34AQI (US)
12th January 2026
31AQI (US)
13th January 2026
27AQI (US)
14th January 2026
24AQI (US)
15th January 2026
29AQI (US)
16th January 2026
22AQI (US)
17th January 2026
34AQI (US)
18th January 2026
28AQI (US)
19th January 2026
30AQI (US)
20th January 2026
42AQI (US)
21st January 2026
44AQI (US)
22nd January 2026
59AQI (US)
23rd January 2026
59AQI (US)
24th January 2026
48AQI (US)
25th January 2026
50AQI (US)
26th January 2026
47AQI (US)
27th January 2026
36AQI (US)
28th January 2026
42AQI (US)
29th January 2026
50AQI (US)
30th January 2026
59AQI (US)
31st January 2026
42AQI (US)
1st February 2026
46AQI (US)
2nd February 2026
51AQI (US)
3rd February 2026
48AQI (US)
4th February 2026
44AQI (US)
5th February 2026
51AQI (US)
6th February 2026
46AQI (US)
7th February 2026
40AQI (US)
8th February 2026
42AQI (US)
9th February 2026
48AQI (US)
10th February 2026
46AQI (US)
11th February 2026
38AQI (US)
12th February 2026
38AQI (US)
13th February 2026
50AQI (US)
14th February 2026
50AQI (US)
15th February 2026
46AQI (US)
16th February 2026
44AQI (US)
17th February 2026
52AQI (US)
18th February 2026
45AQI (US)
19th February 2026
41AQI (US)
20th February 2026
38AQI (US)
21st February 2026
34AQI (US)
22nd February 2026
35AQI (US)
23rd February 2026
36AQI (US)
24th February 2026
46AQI (US)
25th February 2026
42AQI (US)
26th February 2026
39AQI (US)
27th February 2026
41AQI (US)
28th February 2026
33AQI (US)
1st March 2026
38AQI (US)
2nd March 2026
56AQI (US)
3rd March 2026
44AQI (US)
4th March 2026
46AQI (US)
5th March 2026
46AQI (US)
6th March 2026
38AQI (US)
7th March 2026
37AQI (US)
8th March 2026
39AQI (US)
9th March 2026
35AQI (US)
10th March 2026
36AQI (US)
11th March 2026
40AQI (US)
12th March 2026
38AQI (US)
13th March 2026
44AQI (US)
14th March 2026
35AQI (US)
15th March 2026
32AQI (US)
16th March 2026
36AQI (US)
17th March 2026
33AQI (US)
18th March 2026
30AQI (US)
19th March 2026
40AQI (US)
20th March 2026
43AQI (US)
21st March 2026
40AQI (US)
22nd March 2026
33AQI (US)
23rd March 2026
38AQI (US)
24th March 2026
40AQI (US)
25th March 2026
33AQI (US)
26th March 2026
34AQI (US)
27th March 2026
27AQI (US)
28th March 2026
28AQI (US)
29th March 2026
28AQI (US)
30th March 2026
29AQI (US)
31st March 2026
27AQI (US)
1st April 2026
28AQI (US)
2nd April 2026
29AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
31AQI (US)
5th April 2026
29AQI (US)
6th April 2026
31AQI (US)
7th April 2026
28AQI (US)
8th April 2026
34AQI (US)
9th April 2026
29AQI (US)
10th April 2026
33AQI (US)
11th April 2026
29AQI (US)
12th April 2026
28AQI (US)
13th April 2026
31AQI (US)
14th April 2026
32AQI (US)
15th April 2026
32AQI (US)
16th April 2026
30AQI (US)
17th April 2026
18th April 2026
28AQI (US)
19th April 2026
31AQI (US)
20th April 2026
29AQI (US)
21st April 2026
28AQI (US)
22nd April 2026
23rd April 2026
25AQI (US)
24th April 2026
26AQI (US)
25th April 2026
26AQI (US)
26th April 2026
33AQI (US)
27th April 2026
29AQI (US)
28th April 2026
25AQI (US)
29th April 2026
24AQI (US)
30th April 2026
28AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
25AQI (US)
3rd May 2026
24AQI (US)
4th May 2026
36AQI (US)
5th May 2026
37AQI (US)
6th May 2026
29AQI (US)
7th May 2026
27AQI (US)
8th May 2026
33AQI (US)
9th May 2026
10th May 2026
30AQI (US)
11th May 2026
26AQI (US)
12th May 2026
27AQI (US)
13th May 2026
28AQI (US)
14th May 2026
23AQI (US)
15th May 2026
47AQI (US)
16th May 2026
54AQI (US)
17th May 2026
56AQI (US)
18th May 2026
53AQI (US)
19th May 2026
51AQI (US)
20th May 2026
48AQI (US)
21st May 2026
42AQI (US)
22nd May 2026
45AQI (US)
23rd May 2026
49AQI (US)
24th May 2026
44AQI (US)
25th May 2026
44AQI (US)
26th May 2026
32AQI (US)
27th May 2026
25AQI (US)
28th May 2026
18AQI (US)
29th May 2026
20AQI (US)
30th May 2026
24AQI (US)
31st May 2026
27AQI (US)
1st June 2026
30AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
24AQI (US)
5th June 2026
26AQI (US)
6th June 2026
25AQI (US)
7th June 2026
25AQI (US)
8th June 2026
28AQI (US)
9th June 2026
26AQI (US)
10th June 2026
25AQI (US)
11th June 2026
26AQI (US)
12th June 2026
26AQI (US)
13th June 2026
20AQI (US)
14th June 2026
21AQI (US)
15th June 2026
24AQI (US)
16th June 2026
25AQI (US)
17th June 2026
26AQI (US)
18th June 2026
26AQI (US)
19th June 2026
21AQI (US)
20th June 2026
21AQI (US)
21st June 2026
17AQI (US)
22nd June 2026
23AQI (US)
23rd June 2026
19AQI (US)
24th June 2026
21AQI (US)
25th June 2026
26AQI (US)
26th June 2026
27AQI (US)
27th June 2026
31AQI (US)
28th June 2026
30AQI (US)
29th June 2026
27AQI (US)
30th June 2026
36AQI (US)
1st July 2026
38AQI (US)
2nd July 2026
28AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
31AQI (US)
5th July 2026
38AQI (US)
6th July 2026
44AQI (US)
7th July 2026
31AQI (US)
8th July 2026
27AQI (US)
9th July 2026
29AQI (US)
10th July 2026
28AQI (US)
11th July 2026
36AQI (US)
12th July 2026
37AQI (US)
13th July 2026
35AQI (US)
14th July 2026
34AQI (US)
15th July 2026
54AQI (US)
16th July 2026
89AQI (US)
17th July 2026
47AQI (US)
18th July 2026
51AQI (US)
19th July 2026
92AQI (US)
20th July 2026
93AQI (US)
21st July 2026
53AQI (US)
22nd July 2026
50AQI (US)
23rd July 2026
41AQI (US)
24th July 2026
41AQI (US)
25th July 2026
48AQI (US)
26th July 2026
44AQI (US)
27th July 2026
51AQI (US)
28th July 2026
55AQI (US)
29th July 2026
52AQI (US)
30th July 2026
50AQI (US)
31st July 2026
37AQI (US)
1st August 2026
44AQI (US)
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
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

41AQI (US)

43AQI (US)

37AQI (US)

29AQI (US)

35AQI (US)

25AQI (US)

46AQI (US)

44AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202637AQI (US)

27
4
25
3
30
1
28
26
4
30
22
9
1
189
21

Highest AQI (US) recorded in

July

46AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202539AQI (US)

30
1
26
2
29
2
28
2
31
14
16
25
5
1
21
9
1
25
5
22
9
23
7
13
18
287
76
2

Highest AQI (US) recorded in

December

53AQI (US)

Lowest AQI (US) recorded in

May

31AQI (US)

202432AQI (US)

24
6
25
4
30
1
30
29
2
29
30
1
28
3
28
2
25
6
30
29
2
337
27

Highest AQI (US) recorded in

January

40AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202341AQI (US)

18
12
26
2
27
1
27
3
24
7
10
15
4
1
22
7
2
20
11
26
4
31
25
3
24
7
280
72
6
1

Highest AQI (US) recorded in

June

69AQI (US)

Lowest AQI (US) recorded in

October

32AQI (US)

202231AQI (US)

28
1
19
3
31
29
27
3
19
1
20
2
3
29
22
8
25
5
30
1
282
24

Highest AQI (US) recorded in

October

42AQI (US)

Lowest AQI (US) recorded in

April

19AQI (US)

202134AQI (US)

21
8
16
12
29
2
28
2
31
30
18
13
26
5
28
2
31
30
30
1
318
45

Highest AQI (US) recorded in

February

48AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202029AQI (US)

13
18
2
18
30
29
2
31
30
29
1
28
2
24
7
250
14

Highest AQI (US) recorded in

April

38AQI (US)

Lowest AQI (US) recorded in

May

22AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
41AQI (US)
Least Polluted Year Recorded
2020(Avg.)
29AQI (US)

Waterloo's annual 2026 AQI (US) (37) shows an average percentage change of 9.4% (worsened AQI (US)) compared to previous years: 2020 (29), 2021 (34), 2022 (31), 2023 (41), 2024 (32), 2025 (39).