Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Joliet, Illinois, 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

Joliet, Illinois, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
110AQI
Lowest AQI recorded on
25th Aug 2025
18AQI

Same Day Analysis (4th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 47 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 4th Aug - 5th Aug 2026

Joliet, Illinois, United States

AQI
Day
Night
.

5 AM4th Aug 2026

8 PM

4 AM5th Aug 2026

Day time
Avg. Highest Time
10AM4th Aug

51AQI

Avg. Lowest Time
8PM4th Aug

44AQI

Night time
Avg. Highest Time
12AM5th Aug

51AQI

Avg. Lowest Time
9PM4th Aug

42AQI

In the last 24 hours,

Joliet's AQI reached its highest point of 51 at 10 AM during the Day, while the lowest point, 42, was recorded at 9 PM during the Night between 4th Aug and 5th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Joliet, Illinois, United States

JulAug
07th - 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 - 02nd02nd - 03rd03rd - 04th04th - 05th05th
Day
Night
7th Jul 2026425 AMAQI
7th Jul 2026456 AMAQI
7th Jul 2026387 AMAQI
7th Jul 2026338 AMAQI
7th Jul 2026339 AMAQI
7th Jul 20263310 AMAQI
7th Jul 20263111 AMAQI
7th Jul 20263312 PMAQI
7th Jul 2026381 PMAQI
7th Jul 2026382 PMAQI
7th Jul 2026333 PMAQI
7th Jul 2026384 PMAQI
7th Jul 2026335 PMAQI
7th Jul 2026336 PMAQI
7th Jul 2026337 PMAQI
7th Jul 2026388 PMAQI
7th Jul 2026449 PMAQI
7th Jul 20264610 PMAQI
7th Jul 20263611 PMAQI
8th Jul 20263812 AMAQI
8th Jul 2026421 AMAQI
8th Jul 2026422 AMAQI
8th Jul 2026423 AMAQI
8th Jul 2026524 AMAQI

26°C20/33°C

8th Jul 2026425 AMAQI
8th Jul 2026426 AMAQI
8th Jul 2026467 AMAQI
8th Jul 2026468 AMAQI
8th Jul 2026429 AMAQI
8th Jul 20263410 AMAQI
8th Jul 20263311 AMAQI
8th Jul 20263312 PMAQI
8th Jul 2026401 PMAQI
8th Jul 2026292 PMAQI
8th Jul 2026363 PMAQI
8th Jul 2026444 PMAQI
8th Jul 2026445 PMAQI
8th Jul 2026386 PMAQI
8th Jul 2026297 PMAQI
8th Jul 2026338 PMAQI
8th Jul 2026299 PMAQI
8th Jul 20263310 PMAQI
8th Jul 20263811 PMAQI
9th Jul 20263312 AMAQI
9th Jul 2026441 AMAQI
9th Jul 2026492 AMAQI
9th Jul 2026523 AMAQI
9th Jul 2026294 AMAQI

27°C19/35°C

9th Jul 2026295 AMAQI
9th Jul 2026216 AMAQI
9th Jul 2026437 AMAQI
9th Jul 2026288 AMAQI
9th Jul 2026349 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263211 AMAQI
9th Jul 20262412 PMAQI
9th Jul 2026321 PMAQI
9th Jul 2026262 PMAQI
9th Jul 2026323 PMAQI
9th Jul 2026174 PMAQI
9th Jul 2026225 PMAQI
9th Jul 2026176 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026178 PMAQI
9th Jul 2026219 PMAQI
9th Jul 20262110 PMAQI
9th Jul 20262011 PMAQI
10th Jul 20262212 AMAQI
10th Jul 2026211 AMAQI
10th Jul 2026172 AMAQI
10th Jul 2026103 AMAQI
10th Jul 2026404 AMAQI

28°C22/35°C

10th Jul 2026405 AMAQI
10th Jul 2026446 AMAQI
10th Jul 2026217 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026219 AMAQI
10th Jul 20262810 AMAQI
10th Jul 20261711 AMAQI
10th Jul 20262112 PMAQI
10th Jul 2026171 PMAQI
10th Jul 2026212 PMAQI
10th Jul 2026213 PMAQI
10th Jul 2026214 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026366 PMAQI
10th Jul 2026367 PMAQI
10th Jul 2026368 PMAQI
10th Jul 2026309 PMAQI
10th Jul 20263310 PMAQI
10th Jul 20262911 PMAQI
11th Jul 20263812 AMAQI
11th Jul 2026361 AMAQI
11th Jul 2026492 AMAQI
11th Jul 2026733 AMAQI
11th Jul 2026564 AMAQI

26°C22/33°C

11th Jul 2026545 AMAQI
11th Jul 2026466 AMAQI
11th Jul 2026467 AMAQI
11th Jul 2026428 AMAQI
11th Jul 2026429 AMAQI
11th Jul 20264210 AMAQI
11th Jul 20264411 AMAQI
11th Jul 20264212 PMAQI
11th Jul 2026421 PMAQI
11th Jul 2026322 PMAQI
11th Jul 2026213 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026255 PMAQI
11th Jul 2026266 PMAQI
11th Jul 2026217 PMAQI
11th Jul 2026408 PMAQI
11th Jul 2026409 PMAQI
11th Jul 20265110 PMAQI
11th Jul 20263011 PMAQI
12th Jul 20264612 AMAQI
12th Jul 2026381 AMAQI
12th Jul 2026322 AMAQI
12th Jul 2026383 AMAQI
12th Jul 2026294 AMAQI

25°C19/33°C

12th Jul 2026425 AMAQI
12th Jul 2026426 AMAQI
12th Jul 2026467 AMAQI
12th Jul 2026408 AMAQI
12th Jul 2026469 AMAQI
12th Jul 20265310 AMAQI
12th Jul 20264911 AMAQI
12th Jul 20264912 PMAQI
12th Jul 2026381 PMAQI
12th Jul 2026362 PMAQI
12th Jul 2026383 PMAQI
12th Jul 2026504 PMAQI
12th Jul 2026505 PMAQI
12th Jul 2026446 PMAQI
12th Jul 2026427 PMAQI
12th Jul 2026368 PMAQI
12th Jul 2026389 PMAQI
12th Jul 20264210 PMAQI
12th Jul 20264211 PMAQI
13th Jul 20265012 AMAQI
13th Jul 2026461 AMAQI
13th Jul 2026462 AMAQI
13th Jul 2026463 AMAQI
13th Jul 2026504 AMAQI

26°C20/35°C

13th Jul 2026465 AMAQI
13th Jul 2026526 AMAQI
13th Jul 2026507 AMAQI
13th Jul 2026448 AMAQI
13th Jul 2026429 AMAQI
13th Jul 20265310 AMAQI
13th Jul 20264811 AMAQI
13th Jul 20264812 PMAQI
13th Jul 2026401 PMAQI
13th Jul 2026382 PMAQI
13th Jul 2026293 PMAQI
13th Jul 2026334 PMAQI
13th Jul 2026345 PMAQI
13th Jul 2026386 PMAQI
13th Jul 2026447 PMAQI
13th Jul 2026428 PMAQI
13th Jul 2026409 PMAQI
13th Jul 20264410 PMAQI
13th Jul 20263311 PMAQI
14th Jul 20263312 AMAQI
14th Jul 2026501 AMAQI
14th Jul 2026522 AMAQI
14th Jul 2026503 AMAQI
14th Jul 2026484 AMAQI

27°C19/36°C

14th Jul 2026335 AMAQI
14th Jul 2026346 AMAQI
14th Jul 2026367 AMAQI
14th Jul 2026388 AMAQI
14th Jul 2026359 AMAQI
14th Jul 20263810 AMAQI
14th Jul 20263511 AMAQI
14th Jul 20264312 PMAQI
14th Jul 2026341 PMAQI
14th Jul 2026362 PMAQI
14th Jul 2026343 PMAQI
14th Jul 2026264 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026346 PMAQI
14th Jul 2026387 PMAQI
14th Jul 2026328 PMAQI
14th Jul 2026289 PMAQI
14th Jul 20262510 PMAQI
14th Jul 20262211 PMAQI
15th Jul 20262012 AMAQI
15th Jul 2026421 AMAQI
15th Jul 2026942 AMAQI
15th Jul 2026503 AMAQI
15th Jul 2026294 AMAQI

30°C21/39°C

15th Jul 2026295 AMAQI
15th Jul 2026346 AMAQI
15th Jul 2026877 AMAQI
15th Jul 2026338 AMAQI
15th Jul 2026529 AMAQI
15th Jul 20264410 AMAQI
15th Jul 20264411 AMAQI
15th Jul 20264712 PMAQI
15th Jul 2026441 PMAQI
15th Jul 2026552 PMAQI
15th Jul 2026443 PMAQI
15th Jul 2026404 PMAQI
15th Jul 2026295 PMAQI
15th Jul 2026406 PMAQI
15th Jul 2026427 PMAQI
15th Jul 2026718 PMAQI
15th Jul 2026619 PMAQI
15th Jul 202612810 PMAQI
15th Jul 202610311 PMAQI
16th Jul 202614412 AMAQI
16th Jul 2026981 AMAQI
16th Jul 2026252 AMAQI
16th Jul 2026683 AMAQI
16th Jul 2026984 AMAQI

30°C23/38°C

16th Jul 20261045 AMAQI
16th Jul 20262126 AMAQI
16th Jul 20261207 AMAQI
16th Jul 20261468 AMAQI
16th Jul 2026329 AMAQI
16th Jul 20263210 AMAQI
16th Jul 20263211 AMAQI
16th Jul 202627012 PMAQI
16th Jul 2026301 PMAQI
16th Jul 20261352 PMAQI
16th Jul 20261163 PMAQI
16th Jul 20261004 PMAQI
16th Jul 20261345 PMAQI
16th Jul 2026536 PMAQI
16th Jul 20261067 PMAQI
16th Jul 2026328 PMAQI
16th Jul 2026289 PMAQI
16th Jul 202611410 PMAQI
16th Jul 202612011 PMAQI
17th Jul 202616612 AMAQI
17th Jul 2026241 AMAQI
17th Jul 2026362 AMAQI
17th Jul 20262423 AMAQI
17th Jul 20263914 AMAQI

29°C23/36°C

17th Jul 2026645 AMAQI
17th Jul 2026706 AMAQI
17th Jul 2026687 AMAQI
17th Jul 2026788 AMAQI
17th Jul 2026709 AMAQI
17th Jul 20267010 AMAQI
17th Jul 20267211 AMAQI
17th Jul 20266812 PMAQI
17th Jul 2026741 PMAQI
17th Jul 2026712 PMAQI
17th Jul 2026723 PMAQI
17th Jul 2026764 PMAQI
17th Jul 2026675 PMAQI
17th Jul 2026666 PMAQI
17th Jul 2026567 PMAQI
17th Jul 2026528 PMAQI
17th Jul 2026519 PMAQI
17th Jul 20264610 PMAQI
17th Jul 20264811 PMAQI
18th Jul 20264912 AMAQI
18th Jul 2026491 AMAQI
18th Jul 2026462 AMAQI
18th Jul 2026483 AMAQI
18th Jul 2026504 AMAQI

29°C23/35°C

18th Jul 2026505 AMAQI
18th Jul 2026486 AMAQI
18th Jul 2026517 AMAQI
18th Jul 2026468 AMAQI
18th Jul 2026469 AMAQI
18th Jul 20264610 AMAQI
18th Jul 20264611 AMAQI
18th Jul 20264412 PMAQI
18th Jul 2026441 PMAQI
18th Jul 2026442 PMAQI
18th Jul 2026443 PMAQI
18th Jul 2026444 PMAQI
18th Jul 2026485 PMAQI
18th Jul 2026526 PMAQI
18th Jul 2026487 PMAQI
18th Jul 2026578 PMAQI
18th Jul 2026639 PMAQI
18th Jul 20267410 PMAQI
18th Jul 20265811 PMAQI
19th Jul 20265812 AMAQI
19th Jul 2026591 AMAQI
19th Jul 2026562 AMAQI
19th Jul 20261703 AMAQI
19th Jul 20261684 AMAQI

28°C23/35°C

19th Jul 2026695 AMAQI
19th Jul 2026716 AMAQI
19th Jul 2026807 AMAQI
19th Jul 2026808 AMAQI
19th Jul 2026789 AMAQI
19th Jul 20267810 AMAQI
19th Jul 20267911 AMAQI
19th Jul 20268412 PMAQI
19th Jul 2026761 PMAQI
19th Jul 2026772 PMAQI
19th Jul 2026803 PMAQI
19th Jul 2026824 PMAQI
19th Jul 2026775 PMAQI
19th Jul 2026776 PMAQI
19th Jul 2026847 PMAQI
19th Jul 2026828 PMAQI
19th Jul 2026739 PMAQI
19th Jul 20267310 PMAQI
19th Jul 20266411 PMAQI
20th Jul 20266612 AMAQI
20th Jul 2026701 AMAQI
20th Jul 2026782 AMAQI
20th Jul 20261243 AMAQI
20th Jul 20261174 AMAQI

24°C19/32°C

20th Jul 2026795 AMAQI
20th Jul 2026766 AMAQI
20th Jul 2026787 AMAQI
20th Jul 2026918 AMAQI
20th Jul 2026789 AMAQI
20th Jul 20268610 AMAQI
20th Jul 20267711 AMAQI
20th Jul 20267212 PMAQI
20th Jul 2026661 PMAQI
20th Jul 2026662 PMAQI
20th Jul 2026723 PMAQI
20th Jul 2026714 PMAQI
20th Jul 2026715 PMAQI
20th Jul 2026786 PMAQI
20th Jul 2026827 PMAQI
20th Jul 2026828 PMAQI
20th Jul 2026729 PMAQI
20th Jul 20266011 PMAQI
21st Jul 20266812 AMAQI
21st Jul 2026641 AMAQI
21st Jul 2026632 AMAQI
21st Jul 2026803 AMAQI
21st Jul 2026694 AMAQI

23°C16/32°C

21st Jul 2026595 AMAQI
21st Jul 2026486 AMAQI
21st Jul 2026487 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026429 AMAQI
21st Jul 20265110 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20264812 PMAQI
21st Jul 2026551 PMAQI
21st Jul 2026552 PMAQI
21st Jul 2026563 PMAQI
21st Jul 2026544 PMAQI
21st Jul 2026485 PMAQI
21st Jul 2026446 PMAQI
21st Jul 2026427 PMAQI
21st Jul 2026408 PMAQI
21st Jul 2026469 PMAQI
21st Jul 20264610 PMAQI
21st Jul 20263411 PMAQI
22nd Jul 20264212 AMAQI
22nd Jul 2026461 AMAQI
22nd Jul 2026462 AMAQI
22nd Jul 2026403 AMAQI
22nd Jul 2026334 AMAQI

26°C21/33°C

22nd Jul 2026505 AMAQI
22nd Jul 2026406 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026298 AMAQI
22nd Jul 2026289 AMAQI
22nd Jul 20262010 AMAQI
22nd Jul 20261311 AMAQI
22nd Jul 20262212 PMAQI
22nd Jul 2026161 PMAQI
22nd Jul 2026202 PMAQI
22nd Jul 2026183 PMAQI
22nd Jul 2026254 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026256 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026278 PMAQI
22nd Jul 2026729 PMAQI
22nd Jul 20264810 PMAQI
22nd Jul 20263311 PMAQI
23rd Jul 20264012 AMAQI
23rd Jul 2026561 AMAQI
23rd Jul 2026422 AMAQI
23rd Jul 2026513 AMAQI
23rd Jul 2026424 AMAQI

21°C16/24°C

23rd Jul 2026405 AMAQI
23rd Jul 2026446 AMAQI
23rd Jul 2026447 AMAQI
23rd Jul 2026468 AMAQI
23rd Jul 2026469 AMAQI
23rd Jul 20264410 AMAQI
23rd Jul 20264611 AMAQI
23rd Jul 20264412 PMAQI
23rd Jul 2026581 PMAQI
23rd Jul 2026462 PMAQI
23rd Jul 2026423 PMAQI
23rd Jul 2026364 PMAQI
23rd Jul 2026465 PMAQI
23rd Jul 2026406 PMAQI
23rd Jul 2026407 PMAQI
23rd Jul 2026428 PMAQI
23rd Jul 2026269 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20264412 AMAQI
24th Jul 2026511 AMAQI
24th Jul 2026522 AMAQI
24th Jul 2026513 AMAQI
24th Jul 2026524 AMAQI

20°C13/29°C

24th Jul 2026525 AMAQI
24th Jul 2026516 AMAQI
24th Jul 2026507 AMAQI
24th Jul 2026488 AMAQI
24th Jul 2026549 AMAQI
24th Jul 20265410 AMAQI
24th Jul 20264811 AMAQI
24th Jul 20264612 PMAQI
24th Jul 2026421 PMAQI
24th Jul 2026442 PMAQI
24th Jul 2026403 PMAQI
24th Jul 2026464 PMAQI
24th Jul 2026445 PMAQI
24th Jul 2026426 PMAQI
24th Jul 2026407 PMAQI
24th Jul 2026408 PMAQI
24th Jul 2026429 PMAQI
24th Jul 20264210 PMAQI
24th Jul 20263811 PMAQI
25th Jul 20264212 AMAQI
25th Jul 2026471 AMAQI
25th Jul 2026452 AMAQI
25th Jul 2026443 AMAQI
25th Jul 2026444 AMAQI

21°C15/29°C

25th Jul 2026465 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026537 AMAQI
25th Jul 2026578 AMAQI
25th Jul 2026549 AMAQI
25th Jul 20265310 AMAQI
25th Jul 20265211 AMAQI
25th Jul 20265212 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026482 PMAQI
25th Jul 2026443 PMAQI
25th Jul 2026484 PMAQI
25th Jul 2026515 PMAQI
25th Jul 2026446 PMAQI
25th Jul 2026487 PMAQI
25th Jul 2026488 PMAQI
25th Jul 2026519 PMAQI
25th Jul 20264610 PMAQI
25th Jul 20264811 PMAQI
26th Jul 20264612 AMAQI
26th Jul 2026461 AMAQI
26th Jul 2026462 AMAQI
26th Jul 2026463 AMAQI
26th Jul 2026464 AMAQI

21°C16/27°C

26th Jul 2026445 AMAQI
26th Jul 2026466 AMAQI
26th Jul 2026467 AMAQI
26th Jul 2026428 AMAQI
26th Jul 2026489 AMAQI
26th Jul 20264410 AMAQI
26th Jul 20264411 AMAQI
26th Jul 20264212 PMAQI
26th Jul 2026441 PMAQI
26th Jul 2026502 PMAQI
26th Jul 2026493 PMAQI
26th Jul 2026524 PMAQI
26th Jul 2026525 PMAQI
26th Jul 2026536 PMAQI
26th Jul 2026527 PMAQI
26th Jul 2026538 PMAQI
26th Jul 2026509 PMAQI
26th Jul 20265110 PMAQI
26th Jul 20265211 PMAQI
27th Jul 20265112 AMAQI
27th Jul 2026511 AMAQI
27th Jul 2026502 AMAQI
27th Jul 2026503 AMAQI
27th Jul 2026504 AMAQI

27°C22/36°C

27th Jul 2026535 AMAQI
27th Jul 2026536 AMAQI
27th Jul 2026567 AMAQI
27th Jul 2026568 AMAQI
27th Jul 2026589 AMAQI
27th Jul 20266210 AMAQI
27th Jul 20265511 AMAQI
27th Jul 20265512 PMAQI
27th Jul 2026581 PMAQI
27th Jul 2026542 PMAQI
27th Jul 2026463 PMAQI
27th Jul 2026444 PMAQI
27th Jul 2026235 PMAQI
27th Jul 2026326 PMAQI
27th Jul 2026467 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026469 PMAQI
27th Jul 20264610 PMAQI
27th Jul 20265011 PMAQI
28th Jul 20264212 AMAQI
28th Jul 2026441 AMAQI
28th Jul 2026462 AMAQI
28th Jul 2026443 AMAQI
28th Jul 2026444 AMAQI

28°C23/38°C

28th Jul 2026485 AMAQI
28th Jul 2026446 AMAQI
28th Jul 2026467 AMAQI
28th Jul 2026488 AMAQI
28th Jul 2026449 AMAQI
28th Jul 20264410 AMAQI
28th Jul 20264411 AMAQI
28th Jul 20265112 PMAQI
28th Jul 2026511 PMAQI
28th Jul 2026552 PMAQI
28th Jul 2026553 PMAQI
28th Jul 2026544 PMAQI
28th Jul 2026545 PMAQI
28th Jul 2026526 PMAQI
28th Jul 2026447 PMAQI
28th Jul 2026448 PMAQI
28th Jul 2026269 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20263811 PMAQI
29th Jul 20265012 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026344 AMAQI

24°C20/29°C

29th Jul 2026425 AMAQI
29th Jul 2026406 AMAQI
29th Jul 2026447 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026259 AMAQI
29th Jul 20263410 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20262712 PMAQI
29th Jul 2026311 PMAQI
29th Jul 2026402 PMAQI
29th Jul 2026283 PMAQI
29th Jul 2026344 PMAQI
29th Jul 2026265 PMAQI
29th Jul 2026426 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026429 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20263011 PMAQI
30th Jul 20264212 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026312 AMAQI
30th Jul 2026443 AMAQI
30th Jul 2026514 AMAQI

23°C16/31°C

30th Jul 2026465 AMAQI
30th Jul 2026326 AMAQI
30th Jul 2026447 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026409 AMAQI
30th Jul 20264210 AMAQI
30th Jul 20264611 AMAQI
30th Jul 20264012 PMAQI
30th Jul 2026341 PMAQI
30th Jul 2026362 PMAQI
30th Jul 2026363 PMAQI
30th Jul 2026384 PMAQI
30th Jul 2026385 PMAQI
30th Jul 2026406 PMAQI
30th Jul 2026407 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026449 PMAQI
30th Jul 20264210 PMAQI
30th Jul 20264611 PMAQI
31st Jul 20265512 AMAQI
31st Jul 2026461 AMAQI
31st Jul 2026462 AMAQI
31st Jul 2026463 AMAQI
31st Jul 2026444 AMAQI

25°C15/34°C

31st Jul 2026515 AMAQI
31st Jul 2026506 AMAQI
31st Jul 2026547 AMAQI
31st Jul 2026528 AMAQI
31st Jul 2026519 AMAQI
31st Jul 20265010 AMAQI
31st Jul 20264811 AMAQI
31st Jul 20264612 PMAQI
31st Jul 2026501 PMAQI
31st Jul 2026442 PMAQI
31st Jul 2026443 PMAQI
31st Jul 2026484 PMAQI
31st Jul 2026465 PMAQI
31st Jul 2026426 PMAQI
31st Jul 2026297 PMAQI
31st Jul 2026318 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20263610 PMAQI
31st Jul 20262111 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026332 AMAQI
1st Aug 2026423 AMAQI
1st Aug 2026424 AMAQI

24°C19/32°C

1st Aug 2026445 AMAQI
1st Aug 2026466 AMAQI
1st Aug 2026487 AMAQI
1st Aug 2026488 AMAQI
1st Aug 2026449 AMAQI
1st Aug 20264210 AMAQI
1st Aug 20264011 AMAQI
1st Aug 20264212 PMAQI
1st Aug 2026461 PMAQI
1st Aug 2026442 PMAQI
1st Aug 2026513 PMAQI
1st Aug 2026464 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026426 PMAQI
1st Aug 2026487 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026469 PMAQI
1st Aug 20264610 PMAQI
1st Aug 20264811 PMAQI
2nd Aug 20264412 AMAQI
2nd Aug 2026461 AMAQI
2nd Aug 2026442 AMAQI
2nd Aug 2026423 AMAQI
2nd Aug 2026444 AMAQI

21°C19/22°C

2nd Aug 2026425 AMAQI
2nd Aug 2026466 AMAQI
2nd Aug 2026427 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026449 AMAQI
2nd Aug 20264210 AMAQI
2nd Aug 20264211 AMAQI
2nd Aug 20264612 PMAQI
2nd Aug 2026501 PMAQI
2nd Aug 2026482 PMAQI
2nd Aug 2026483 PMAQI
2nd Aug 2026484 PMAQI
2nd Aug 2026505 PMAQI
2nd Aug 2026506 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026468 PMAQI
2nd Aug 2026469 PMAQI
2nd Aug 20264410 PMAQI
2nd Aug 20264211 PMAQI
3rd Aug 20264412 AMAQI
3rd Aug 2026461 AMAQI
3rd Aug 2026402 AMAQI
3rd Aug 2026233 AMAQI
3rd Aug 2026304 AMAQI

22°C19/27°C

3rd Aug 2026365 AMAQI
3rd Aug 2026486 AMAQI
3rd Aug 2026487 AMAQI
3rd Aug 2026468 AMAQI
3rd Aug 2026449 AMAQI
3rd Aug 20264610 AMAQI
3rd Aug 20264211 AMAQI
3rd Aug 20264412 PMAQI
3rd Aug 2026441 PMAQI
3rd Aug 2026382 PMAQI
3rd Aug 2026423 PMAQI
3rd Aug 2026484 PMAQI
3rd Aug 2026465 PMAQI
3rd Aug 2026446 PMAQI
3rd Aug 2026467 PMAQI
3rd Aug 2026448 PMAQI
3rd Aug 2026509 PMAQI
3rd Aug 20265010 PMAQI
3rd Aug 20265111 PMAQI
4th Aug 20264212 AMAQI
4th Aug 2026481 AMAQI
4th Aug 2026492 AMAQI
4th Aug 2026513 AMAQI
4th Aug 2026504 AMAQI

23°C17/31°C

4th Aug 2026485 AMAQI
4th Aug 2026466 AMAQI
4th Aug 2026467 AMAQI
4th Aug 2026468 AMAQI
4th Aug 2026489 AMAQI
4th Aug 20265110 AMAQI
4th Aug 20264911 AMAQI
4th Aug 20264812 PMAQI
4th Aug 2026461 PMAQI
4th Aug 2026462 PMAQI
4th Aug 2026443 PMAQI
4th Aug 2026464 PMAQI
4th Aug 2026485 PMAQI
4th Aug 2026446 PMAQI
4th Aug 2026467 PMAQI
4th Aug 2026448 PMAQI
4th Aug 2026429 PMAQI
4th Aug 20264410 PMAQI
4th Aug 20264811 PMAQI
5th Aug 20265112 AMAQI
5th Aug 2026481 AMAQI
5th Aug 2026482 AMAQI
5th Aug 2026463 AMAQI
5th Aug 2026494 AMAQI

25°C18/33°C

5th Aug 2026485 AMAQI
5 AM
5th Aug 2026486 AMAQI
5th Aug 2026507 AMAQI
5th Aug 2026538 AMAQI
5th Aug 2026529 AMAQI
5th Aug 20265610 AMAQI
5th Aug 20265411 AMAQI
5th Aug 20264812 PMAQI
12 PM
5th Aug 2026481 PMAQI
5th Aug 2026482 PMAQI
5th Aug 2026483 PMAQI
5th Aug 2026514 PMAQI
5th Aug 2026515 PMAQI
5th Aug 2026506 PMAQI
5th Aug 2026487 PMAQI
5th Aug 2026428 PMAQI
8 PM
5th Aug 2026469 PMAQI
5th Aug 20264410 PMAQI
5th Aug 20264411 PMAQI
12 AM
4 AM

25°C21/31°C

Day time
Avg. Highest Time
12 PM

53AQI

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

43AQI

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. 53), while the lowest AQI was between 8 PM to 8 PM (Avg. 43).
Night time
Avg. Highest Time
4 AM

64AQI

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

44AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 64), while the lowest AQI was between 9 PM to 9 PM (Avg. 44).

2026 Days Vs Air Quality

Joliet, Illinois, United States

2026

92%

196

8%

17

Total number of days with different AQI categories in last 217 days in 2026 (148 days remaining)

Good
196 Days
Moderate
17 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 92%

Health Risk Level:

Very Low

In 2026, 92% of 217 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

Joliet, Illinois, 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
15AQI (US)
2nd January 2026
22AQI (US)
3rd January 2026
29AQI (US)
4th January 2026
27AQI (US)
5th January 2026
46AQI (US)
6th January 2026
60AQI (US)
7th January 2026
45AQI (US)
8th January 2026
43AQI (US)
9th January 2026
19AQI (US)
10th January 2026
26AQI (US)
11th January 2026
19AQI (US)
12th January 2026
21AQI (US)
13th January 2026
24AQI (US)
14th January 2026
15AQI (US)
15th January 2026
11AQI (US)
16th January 2026
20AQI (US)
17th January 2026
16AQI (US)
18th January 2026
16AQI (US)
19th January 2026
20AQI (US)
20th January 2026
21AQI (US)
21st January 2026
32AQI (US)
22nd January 2026
60AQI (US)
23rd January 2026
58AQI (US)
24th January 2026
48AQI (US)
25th January 2026
49AQI (US)
26th January 2026
46AQI (US)
27th January 2026
36AQI (US)
28th January 2026
42AQI (US)
29th January 2026
50AQI (US)
30th January 2026
58AQI (US)
31st January 2026
42AQI (US)
1st February 2026
45AQI (US)
2nd February 2026
51AQI (US)
3rd February 2026
47AQI (US)
4th February 2026
44AQI (US)
5th February 2026
52AQI (US)
6th February 2026
46AQI (US)
7th February 2026
40AQI (US)
8th February 2026
41AQI (US)
9th February 2026
48AQI (US)
10th February 2026
48AQI (US)
11th February 2026
38AQI (US)
12th February 2026
38AQI (US)
13th February 2026
50AQI (US)
14th February 2026
49AQI (US)
15th February 2026
48AQI (US)
16th February 2026
45AQI (US)
17th February 2026
47AQI (US)
18th February 2026
44AQI (US)
19th February 2026
43AQI (US)
20th February 2026
38AQI (US)
21st February 2026
34AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
37AQI (US)
24th February 2026
46AQI (US)
25th February 2026
44AQI (US)
26th February 2026
34AQI (US)
27th February 2026
34AQI (US)
28th February 2026
33AQI (US)
1st March 2026
38AQI (US)
2nd March 2026
57AQI (US)
3rd March 2026
44AQI (US)
4th March 2026
46AQI (US)
5th March 2026
43AQI (US)
6th March 2026
41AQI (US)
7th March 2026
36AQI (US)
8th March 2026
40AQI (US)
9th March 2026
35AQI (US)
10th March 2026
35AQI (US)
11th March 2026
42AQI (US)
12th March 2026
38AQI (US)
13th March 2026
40AQI (US)
14th March 2026
35AQI (US)
15th March 2026
31AQI (US)
16th March 2026
37AQI (US)
17th March 2026
35AQI (US)
18th March 2026
30AQI (US)
19th March 2026
39AQI (US)
20th March 2026
44AQI (US)
21st March 2026
39AQI (US)
22nd March 2026
34AQI (US)
23rd March 2026
39AQI (US)
24th March 2026
35AQI (US)
25th March 2026
32AQI (US)
26th March 2026
33AQI (US)
27th March 2026
29AQI (US)
28th March 2026
28AQI (US)
29th March 2026
30AQI (US)
30th March 2026
28AQI (US)
31st March 2026
27AQI (US)
1st April 2026
30AQI (US)
2nd April 2026
28AQI (US)
3rd April 2026
27AQI (US)
4th April 2026
30AQI (US)
5th April 2026
30AQI (US)
6th April 2026
31AQI (US)
7th April 2026
28AQI (US)
8th April 2026
37AQI (US)
9th April 2026
30AQI (US)
10th April 2026
33AQI (US)
11th April 2026
29AQI (US)
12th April 2026
29AQI (US)
13th April 2026
32AQI (US)
14th April 2026
32AQI (US)
15th April 2026
33AQI (US)
16th April 2026
30AQI (US)
17th April 2026
18th April 2026
28AQI (US)
19th April 2026
33AQI (US)
20th April 2026
27AQI (US)
21st April 2026
26AQI (US)
22nd April 2026
23rd April 2026
25AQI (US)
24th April 2026
28AQI (US)
25th April 2026
28AQI (US)
26th April 2026
34AQI (US)
27th April 2026
26AQI (US)
28th April 2026
24AQI (US)
29th April 2026
24AQI (US)
30th April 2026
27AQI (US)
1st May 2026
24AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
22AQI (US)
4th May 2026
36AQI (US)
5th May 2026
38AQI (US)
6th May 2026
27AQI (US)
7th May 2026
26AQI (US)
8th May 2026
34AQI (US)
9th May 2026
10th May 2026
30AQI (US)
11th May 2026
29AQI (US)
12th May 2026
27AQI (US)
13th May 2026
29AQI (US)
14th May 2026
25AQI (US)
15th May 2026
47AQI (US)
16th May 2026
52AQI (US)
17th May 2026
57AQI (US)
18th May 2026
57AQI (US)
19th May 2026
55AQI (US)
20th May 2026
50AQI (US)
21st May 2026
43AQI (US)
22nd May 2026
45AQI (US)
23rd May 2026
50AQI (US)
24th May 2026
47AQI (US)
25th May 2026
45AQI (US)
26th May 2026
32AQI (US)
27th May 2026
28AQI (US)
28th May 2026
15AQI (US)
29th May 2026
22AQI (US)
30th May 2026
27AQI (US)
31st May 2026
27AQI (US)
1st June 2026
30AQI (US)
2nd June 2026
23AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
24AQI (US)
5th June 2026
32AQI (US)
6th June 2026
22AQI (US)
7th June 2026
24AQI (US)
8th June 2026
27AQI (US)
9th June 2026
23AQI (US)
10th June 2026
24AQI (US)
11th June 2026
25AQI (US)
12th June 2026
25AQI (US)
13th June 2026
22AQI (US)
14th June 2026
21AQI (US)
15th June 2026
24AQI (US)
16th June 2026
25AQI (US)
17th June 2026
25AQI (US)
18th June 2026
26AQI (US)
19th June 2026
22AQI (US)
20th June 2026
20AQI (US)
21st June 2026
24AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
18AQI (US)
24th June 2026
24AQI (US)
25th June 2026
25AQI (US)
26th June 2026
25AQI (US)
27th June 2026
31AQI (US)
28th June 2026
28AQI (US)
29th June 2026
28AQI (US)
30th June 2026
38AQI (US)
1st July 2026
32AQI (US)
2nd July 2026
25AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
32AQI (US)
5th July 2026
48AQI (US)
6th July 2026
39AQI (US)
7th July 2026
37AQI (US)
8th July 2026
39AQI (US)
9th July 2026
29AQI (US)
10th July 2026
27AQI (US)
11th July 2026
40AQI (US)
12th July 2026
42AQI (US)
13th July 2026
43AQI (US)
14th July 2026
36AQI (US)
15th July 2026
52AQI (US)
16th July 2026
98AQI (US)
17th July 2026
88AQI (US)
18th July 2026
50AQI (US)
19th July 2026
82AQI (US)
20th July 2026
79AQI (US)
21st July 2026
52AQI (US)
22nd July 2026
33AQI (US)
23rd July 2026
43AQI (US)
24th July 2026
46AQI (US)
25th July 2026
48AQI (US)
26th July 2026
48AQI (US)
27th July 2026
50AQI (US)
28th July 2026
45AQI (US)
29th July 2026
34AQI (US)
30th July 2026
40AQI (US)
31st July 2026
44AQI (US)
1st August 2026
43AQI (US)
2nd August 2026
45AQI (US)
3rd August 2026
43AQI (US)
4th August 2026
47AQI (US)
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

33AQI (US)

43AQI (US)

37AQI (US)

29AQI (US)

36AQI (US)

25AQI (US)

46AQI (US)

45AQI (US)

No. of days

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

202636AQI (US)

27
4
26
2
30
1
28
26
4
30
25
6
4
196
17

Highest AQI (US) recorded in

July

46AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202539AQI (US)

30
1
27
1
30
1
29
1
30
1
15
15
15
15
1
19
11
1
20
10
27
4
25
5
18
13
285
78
2

Highest AQI (US) recorded in

June

54AQI (US)

Lowest AQI (US) recorded in

January

28AQI (US)

202432AQI (US)

28
2
21
8
14
1
30
31
27
3
26
5
24
7
13
27
4
29
1
29
2
299
33

Highest AQI (US) recorded in

February

38AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202342AQI (US)

23
8
26
2
27
4
28
2
26
4
5
22
1
2
20
8
3
12
19
28
2
29
2
26
3
28
3
278
79
4
2

Highest AQI (US) recorded in

June

79AQI (US)

Lowest AQI (US) recorded in

December

33AQI (US)

202237AQI (US)

26
5
17
5
26
5
27
3
27
4
28
2
22
2
2
27
2
26
5
19
7
23
8
270
48

Highest AQI (US) recorded in

November

42AQI (US)

Lowest AQI (US) recorded in

April

30AQI (US)

202140AQI (US)

21
8
17
11
23
6
18
8
30
1
26
4
19
12
21
9
29
1
28
3
19
9
19
12
270
84

Highest AQI (US) recorded in

July

48AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202038AQI (US)

9
4
17
3
16
21
5
25
5
1
25
3
27
2
28
2
21
7
18
11
207
42
1

Highest AQI (US) recorded in

December

44AQI (US)

Lowest AQI (US) recorded in

May

32AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
42AQI (US)
Least Polluted Year Recorded
2024(Avg.)
32AQI (US)

Joliet's annual 2026 AQI (US) (36) shows an average percentage change of -4.5% (improved AQI (US)) compared to previous years: 2020 (38), 2021 (40), 2022 (37), 2023 (42), 2024 (32), 2025 (39).