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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+

July Air Quality Analysis

Joliet, Illinois, United States

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
16th Jul 2023
149AQI
Lowest AQI recorded on
1st Jul 2024
17AQI

Same Day Analysis (30th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 46 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 30th Jul - 31st Jul 2025

Joliet, Illinois, United States

AQI
Day
Night
.

5 AM30th Jul 2025

8 PM

4 AM31st Jul 2025

Day time
Avg. Highest Time
12PM30th Jul

49AQI

Avg. Lowest Time
8PM30th Jul

44AQI

Night time
Avg. Highest Time
11PM30th Jul

56AQI

Avg. Lowest Time
9PM30th Jul

50AQI

In the last 24 hours,

Joliet's AQI reached its highest point of 56 at 11 PM during the Night, while the lowest point, 44, was recorded at 8 PM during the Day between 30th Jul and 31st Jul 2025.

Day & Night AQI Trend : Jul 2025

Joliet, Illinois, United States

Jul
01st - 02nd02nd - 03rd03rd - 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
Day
Night
1st Jul 2025275 AMAQI
1st Jul 2025266 AMAQI
1st Jul 2025257 AMAQI
1st Jul 2025268 AMAQI
1st Jul 2025279 AMAQI
1st Jul 20252810 AMAQI
1st Jul 20253111 AMAQI
1st Jul 20253412 PMAQI
1st Jul 2025361 PMAQI
1st Jul 2025372 PMAQI
1st Jul 2025363 PMAQI
1st Jul 2025354 PMAQI
1st Jul 2025365 PMAQI
1st Jul 2025366 PMAQI
1st Jul 2025317 PMAQI
1st Jul 2025328 PMAQI
1st Jul 2025419 PMAQI
1st Jul 20254210 PMAQI
1st Jul 20254311 PMAQI
2nd Jul 20254512 AMAQI
2nd Jul 2025471 AMAQI
2nd Jul 2025542 AMAQI
2nd Jul 2025543 AMAQI
2nd Jul 2025534 AMAQI

25°C18/33°C

2nd Jul 2025535 AMAQI
2nd Jul 2025526 AMAQI
2nd Jul 2025527 AMAQI
2nd Jul 2025528 AMAQI
2nd Jul 2025529 AMAQI
2nd Jul 20255210 AMAQI
2nd Jul 20255211 AMAQI
2nd Jul 20255412 PMAQI
2nd Jul 2025541 PMAQI
2nd Jul 2025552 PMAQI
2nd Jul 2025553 PMAQI
2nd Jul 2025554 PMAQI
2nd Jul 2025555 PMAQI
2nd Jul 2025556 PMAQI
2nd Jul 2025547 PMAQI
2nd Jul 2025538 PMAQI
2nd Jul 2025529 PMAQI
2nd Jul 20255210 PMAQI
2nd Jul 20255211 PMAQI
3rd Jul 20255212 AMAQI
3rd Jul 2025521 AMAQI
3rd Jul 2025522 AMAQI
3rd Jul 2025523 AMAQI
3rd Jul 2025454 AMAQI

25°C16/32°C

3rd Jul 2025525 AMAQI
3rd Jul 2025526 AMAQI
3rd Jul 2025547 AMAQI
3rd Jul 2025548 AMAQI
3rd Jul 2025559 AMAQI
3rd Jul 20255410 AMAQI
3rd Jul 20255311 AMAQI
3rd Jul 20255212 PMAQI
3rd Jul 2025531 PMAQI
3rd Jul 2025532 PMAQI
3rd Jul 2025543 PMAQI
3rd Jul 2025534 PMAQI
3rd Jul 2025535 PMAQI
3rd Jul 2025536 PMAQI
3rd Jul 2025547 PMAQI
3rd Jul 2025548 PMAQI
3rd Jul 2025539 PMAQI
3rd Jul 20255410 PMAQI
3rd Jul 20255511 PMAQI
4th Jul 20255612 AMAQI
4th Jul 2025581 AMAQI
4th Jul 2025582 AMAQI
4th Jul 2025563 AMAQI
4th Jul 2025564 AMAQI

26°C17/35°C

4th Jul 2025555 AMAQI
4th Jul 2025546 AMAQI
4th Jul 2025557 AMAQI
4th Jul 2025558 AMAQI
4th Jul 2025559 AMAQI
4th Jul 20255510 AMAQI
4th Jul 20255311 AMAQI
4th Jul 20255312 PMAQI
4th Jul 2025531 PMAQI
4th Jul 2025542 PMAQI
4th Jul 2025543 PMAQI
4th Jul 2025554 PMAQI
4th Jul 2025555 PMAQI
4th Jul 2025546 PMAQI
4th Jul 2025557 PMAQI
4th Jul 2025558 PMAQI
4th Jul 2025549 PMAQI
4th Jul 20255610 PMAQI
4th Jul 20256411 PMAQI
5th Jul 20256712 AMAQI
5th Jul 2025661 AMAQI
5th Jul 2025722 AMAQI
5th Jul 2025713 AMAQI
5th Jul 2025664 AMAQI

27°C20/34°C

5th Jul 2025645 AMAQI
5th Jul 2025646 AMAQI
5th Jul 2025657 AMAQI
5th Jul 2025678 AMAQI
5th Jul 2025689 AMAQI
5th Jul 20256810 AMAQI
5th Jul 20256811 AMAQI
5th Jul 20256712 PMAQI
5th Jul 2025661 PMAQI
5th Jul 2025642 PMAQI
5th Jul 2025643 PMAQI
5th Jul 2025634 PMAQI
5th Jul 2025635 PMAQI
5th Jul 2025636 PMAQI
5th Jul 2025637 PMAQI
5th Jul 2025668 PMAQI
5th Jul 2025629 PMAQI
5th Jul 20256310 PMAQI
5th Jul 20256311 PMAQI
6th Jul 20256512 AMAQI
6th Jul 2025641 AMAQI
6th Jul 2025552 AMAQI
6th Jul 2025553 AMAQI
6th Jul 2025594 AMAQI

28°C19/36°C

6th Jul 2025585 AMAQI
6th Jul 2025586 AMAQI
6th Jul 2025597 AMAQI
6th Jul 2025588 AMAQI
6th Jul 2025569 AMAQI
6th Jul 20255010 AMAQI
6th Jul 20254511 AMAQI
6th Jul 20254012 PMAQI
6th Jul 2025381 PMAQI
6th Jul 2025462 PMAQI
6th Jul 2025503 PMAQI
6th Jul 2025504 PMAQI
6th Jul 2025505 PMAQI
6th Jul 2025506 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025548 PMAQI
6th Jul 2025499 PMAQI
6th Jul 20255110 PMAQI
6th Jul 20255011 PMAQI
7th Jul 20255312 AMAQI
7th Jul 2025531 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025523 AMAQI
7th Jul 2025474 AMAQI

26°C20/33°C

7th Jul 2025435 AMAQI
7th Jul 2025456 AMAQI
7th Jul 2025487 AMAQI
7th Jul 2025518 AMAQI
7th Jul 2025559 AMAQI
7th Jul 20255810 AMAQI
7th Jul 20256111 AMAQI
7th Jul 20256512 PMAQI
7th Jul 2025641 PMAQI
7th Jul 2025622 PMAQI
7th Jul 2025563 PMAQI
7th Jul 2025564 PMAQI
7th Jul 2025555 PMAQI
7th Jul 2025566 PMAQI
7th Jul 2025547 PMAQI
7th Jul 2025548 PMAQI
7th Jul 2025549 PMAQI
7th Jul 20255510 PMAQI
7th Jul 20255511 PMAQI
8th Jul 20255612 AMAQI
8th Jul 2025591 AMAQI
8th Jul 2025702 AMAQI
8th Jul 2025723 AMAQI
8th Jul 2025744 AMAQI

23°C19/32°C

8th Jul 2025735 AMAQI
8th Jul 2025716 AMAQI
8th Jul 2025747 AMAQI
8th Jul 2025768 AMAQI
8th Jul 2025749 AMAQI
8th Jul 20257410 AMAQI
8th Jul 20257411 AMAQI
8th Jul 20257212 PMAQI
8th Jul 2025701 PMAQI
8th Jul 2025722 PMAQI
8th Jul 2025723 PMAQI
8th Jul 2025724 PMAQI
8th Jul 2025705 PMAQI
8th Jul 2025666 PMAQI
8th Jul 2025697 PMAQI
8th Jul 2025698 PMAQI
8th Jul 2025639 PMAQI
8th Jul 20256110 PMAQI
8th Jul 20256211 PMAQI
9th Jul 20256112 AMAQI
9th Jul 2025571 AMAQI
9th Jul 2025432 AMAQI
9th Jul 2025403 AMAQI
9th Jul 2025374 AMAQI

25°C16/34°C

9th Jul 2025395 AMAQI
9th Jul 2025436 AMAQI
9th Jul 2025427 AMAQI
9th Jul 2025428 AMAQI
9th Jul 2025419 AMAQI
9th Jul 20254210 AMAQI
9th Jul 20254311 AMAQI
9th Jul 20255012 PMAQI
9th Jul 2025521 PMAQI
9th Jul 2025532 PMAQI
9th Jul 2025523 PMAQI
9th Jul 2025524 PMAQI
9th Jul 2025515 PMAQI
9th Jul 2025526 PMAQI
9th Jul 2025527 PMAQI
9th Jul 2025528 PMAQI
9th Jul 2025539 PMAQI
9th Jul 20255110 PMAQI
9th Jul 20255211 PMAQI
10th Jul 20255212 AMAQI
10th Jul 2025511 AMAQI
10th Jul 2025542 AMAQI
10th Jul 2025543 AMAQI
10th Jul 2025544 AMAQI

23°C18/31°C

10th Jul 2025535 AMAQI
10th Jul 2025526 AMAQI
10th Jul 2025527 AMAQI
10th Jul 2025528 AMAQI
10th Jul 2025529 AMAQI
10th Jul 20255210 AMAQI
10th Jul 20255211 AMAQI
10th Jul 20255112 PMAQI
10th Jul 2025511 PMAQI
10th Jul 2025522 PMAQI
10th Jul 2025523 PMAQI
10th Jul 2025524 PMAQI
10th Jul 2025525 PMAQI
10th Jul 2025536 PMAQI
10th Jul 2025527 PMAQI
10th Jul 2025508 PMAQI
10th Jul 2025469 PMAQI
10th Jul 20254810 PMAQI
10th Jul 20254811 PMAQI
11th Jul 20254912 AMAQI
11th Jul 2025481 AMAQI
11th Jul 2025402 AMAQI
11th Jul 2025363 AMAQI
11th Jul 2025324 AMAQI

25°C15/34°C

11th Jul 2025325 AMAQI
11th Jul 2025346 AMAQI
11th Jul 2025377 AMAQI
11th Jul 2025388 AMAQI
11th Jul 2025379 AMAQI
11th Jul 20253610 AMAQI
11th Jul 20253611 AMAQI
11th Jul 20253812 PMAQI
11th Jul 2025431 PMAQI
11th Jul 2025452 PMAQI
11th Jul 2025443 PMAQI
11th Jul 2025444 PMAQI
11th Jul 2025455 PMAQI
11th Jul 2025466 PMAQI
11th Jul 2025417 PMAQI
11th Jul 2025418 PMAQI
11th Jul 2025429 PMAQI
11th Jul 20254210 PMAQI
11th Jul 20254011 PMAQI
12th Jul 20253612 AMAQI
12th Jul 2025321 AMAQI
12th Jul 2025242 AMAQI
12th Jul 2025233 AMAQI
12th Jul 2025224 AMAQI

27°C20/33°C

12th Jul 2025245 AMAQI
12th Jul 2025246 AMAQI
12th Jul 2025247 AMAQI
12th Jul 2025248 AMAQI
12th Jul 2025249 AMAQI
12th Jul 20252610 AMAQI
12th Jul 20252611 AMAQI
12th Jul 20252812 PMAQI
12th Jul 2025281 PMAQI
12th Jul 2025312 PMAQI
12th Jul 2025303 PMAQI
12th Jul 2025324 PMAQI
12th Jul 2025315 PMAQI
12th Jul 2025306 PMAQI
12th Jul 2025297 PMAQI
12th Jul 2025338 PMAQI
12th Jul 2025329 PMAQI
12th Jul 20253210 PMAQI
12th Jul 20253511 PMAQI
13th Jul 20253712 AMAQI
13th Jul 2025451 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025543 AMAQI
13th Jul 2025554 AMAQI

25°C21/30°C

13th Jul 2025555 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025627 AMAQI
13th Jul 2025628 AMAQI
13th Jul 2025609 AMAQI
13th Jul 20256310 AMAQI
13th Jul 20256211 AMAQI
13th Jul 20256012 PMAQI
13th Jul 2025601 PMAQI
13th Jul 2025602 PMAQI
13th Jul 2025603 PMAQI
13th Jul 2025614 PMAQI
13th Jul 2025615 PMAQI
13th Jul 2025616 PMAQI
13th Jul 2025647 PMAQI
13th Jul 2025568 PMAQI
13th Jul 2025559 PMAQI
13th Jul 20255610 PMAQI
13th Jul 20255711 PMAQI
14th Jul 20255612 AMAQI
14th Jul 2025581 AMAQI
14th Jul 2025682 AMAQI
14th Jul 2025723 AMAQI
14th Jul 2025724 AMAQI

23°C16/29°C

14th Jul 2025665 AMAQI
14th Jul 2025686 AMAQI
14th Jul 2025767 AMAQI
14th Jul 2025808 AMAQI
14th Jul 2025889 AMAQI
14th Jul 20258510 AMAQI
14th Jul 20257911 AMAQI
14th Jul 20257912 PMAQI
14th Jul 2025791 PMAQI
14th Jul 2025782 PMAQI
14th Jul 2025803 PMAQI
14th Jul 2025784 PMAQI
14th Jul 2025805 PMAQI
14th Jul 2025846 PMAQI
14th Jul 2025787 PMAQI
14th Jul 2025808 PMAQI
14th Jul 2025779 PMAQI
14th Jul 20257610 PMAQI
14th Jul 20257711 PMAQI
15th Jul 20257612 AMAQI
15th Jul 2025801 AMAQI
15th Jul 2025852 AMAQI
15th Jul 2025873 AMAQI
15th Jul 2025884 AMAQI

24°C15/32°C

15th Jul 2025865 AMAQI
15th Jul 2025866 AMAQI
15th Jul 2025867 AMAQI
15th Jul 2025828 AMAQI
15th Jul 2025829 AMAQI
15th Jul 20258010 AMAQI
15th Jul 20257811 AMAQI
15th Jul 20257612 PMAQI
15th Jul 2025731 PMAQI
15th Jul 2025732 PMAQI
15th Jul 2025743 PMAQI
15th Jul 2025744 PMAQI
15th Jul 2025745 PMAQI
15th Jul 2025736 PMAQI
15th Jul 2025807 PMAQI
15th Jul 2025808 PMAQI
15th Jul 2025729 PMAQI
15th Jul 20257210 PMAQI
15th Jul 20257111 PMAQI
16th Jul 20256812 AMAQI
16th Jul 2025631 AMAQI
16th Jul 2025452 AMAQI
16th Jul 2025413 AMAQI
16th Jul 2025414 AMAQI

26°C18/33°C

16th Jul 2025425 AMAQI
16th Jul 2025446 AMAQI
16th Jul 2025467 AMAQI
16th Jul 2025468 AMAQI
16th Jul 2025479 AMAQI
16th Jul 20254910 AMAQI
16th Jul 20254811 AMAQI
16th Jul 20254812 PMAQI
16th Jul 2025481 PMAQI
16th Jul 2025512 PMAQI
16th Jul 2025523 PMAQI
16th Jul 2025514 PMAQI
16th Jul 2025485 PMAQI
16th Jul 2025456 PMAQI
16th Jul 2025507 PMAQI
16th Jul 2025508 PMAQI
16th Jul 2025469 PMAQI
16th Jul 20254510 PMAQI
16th Jul 20254211 PMAQI
17th Jul 20254012 AMAQI
17th Jul 2025371 AMAQI
17th Jul 2025302 AMAQI
17th Jul 2025303 AMAQI
17th Jul 2025304 AMAQI

27°C22/33°C

17th Jul 2025305 AMAQI
17th Jul 2025296 AMAQI
17th Jul 2025297 AMAQI
17th Jul 2025298 AMAQI
17th Jul 2025309 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20253211 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025291 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025303 PMAQI
17th Jul 2025304 PMAQI
17th Jul 2025305 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025297 PMAQI
17th Jul 2025298 PMAQI
17th Jul 2025289 PMAQI
17th Jul 20252810 PMAQI
17th Jul 20252811 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025281 AMAQI
18th Jul 2025282 AMAQI
18th Jul 2025273 AMAQI
18th Jul 2025284 AMAQI

21°C16/27°C

18th Jul 2025285 AMAQI
18th Jul 2025276 AMAQI
18th Jul 2025267 AMAQI
18th Jul 2025278 AMAQI
18th Jul 2025269 AMAQI
18th Jul 20252610 AMAQI
18th Jul 20252611 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025294 PMAQI
18th Jul 2025295 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025267 PMAQI
18th Jul 2025258 PMAQI
18th Jul 2025279 PMAQI
18th Jul 20253010 PMAQI
18th Jul 20253011 PMAQI
19th Jul 20253112 AMAQI
19th Jul 2025321 AMAQI
19th Jul 2025362 AMAQI
19th Jul 2025323 AMAQI
19th Jul 2025324 AMAQI

21°C13/30°C

19th Jul 2025315 AMAQI
19th Jul 2025306 AMAQI
19th Jul 2025307 AMAQI
19th Jul 2025338 AMAQI
19th Jul 2025349 AMAQI
19th Jul 20253410 AMAQI
19th Jul 20253311 AMAQI
19th Jul 20253612 PMAQI
19th Jul 2025351 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025343 PMAQI
19th Jul 2025334 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025337 PMAQI
19th Jul 2025348 PMAQI
19th Jul 2025309 PMAQI
19th Jul 20253010 PMAQI
19th Jul 20253011 PMAQI
20th Jul 20252812 AMAQI
20th Jul 2025291 AMAQI
20th Jul 2025242 AMAQI
20th Jul 2025233 AMAQI
20th Jul 2025234 AMAQI

24°C18/29°C

20th Jul 2025235 AMAQI
20th Jul 2025256 AMAQI
20th Jul 2025257 AMAQI
20th Jul 2025308 AMAQI
20th Jul 2025299 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20252411 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025314 PMAQI
20th Jul 2025305 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025277 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253310 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025381 AMAQI
21st Jul 2025552 AMAQI
21st Jul 2025673 AMAQI
21st Jul 2025804 AMAQI

21°C18/22°C

21st Jul 2025825 AMAQI
21st Jul 2025686 AMAQI
21st Jul 2025787 AMAQI
21st Jul 2025788 AMAQI
21st Jul 2025649 AMAQI
21st Jul 20256010 AMAQI
21st Jul 20255611 AMAQI
21st Jul 20255612 PMAQI
21st Jul 2025561 PMAQI
21st Jul 2025592 PMAQI
21st Jul 2025623 PMAQI
21st Jul 2025624 PMAQI
21st Jul 2025625 PMAQI
21st Jul 2025626 PMAQI
21st Jul 2025607 PMAQI
21st Jul 2025618 PMAQI
21st Jul 2025649 PMAQI
21st Jul 20256310 PMAQI
21st Jul 20256611 PMAQI
22nd Jul 20256412 AMAQI
22nd Jul 2025711 AMAQI
22nd Jul 2025772 AMAQI
22nd Jul 2025753 AMAQI
22nd Jul 2025764 AMAQI

22°C17/27°C

22nd Jul 2025775 AMAQI
22nd Jul 2025836 AMAQI
22nd Jul 2025847 AMAQI
22nd Jul 2025828 AMAQI
22nd Jul 2025839 AMAQI
22nd Jul 20258310 AMAQI
22nd Jul 20258211 AMAQI
22nd Jul 20258112 PMAQI
22nd Jul 2025821 PMAQI
22nd Jul 2025802 PMAQI
22nd Jul 2025803 PMAQI
22nd Jul 2025794 PMAQI
22nd Jul 2025775 PMAQI
22nd Jul 2025766 PMAQI
22nd Jul 2025787 PMAQI
22nd Jul 2025778 PMAQI
22nd Jul 2025749 PMAQI
22nd Jul 20257410 PMAQI
22nd Jul 20257411 PMAQI
23rd Jul 20257412 AMAQI
23rd Jul 2025701 AMAQI
23rd Jul 2025662 AMAQI
23rd Jul 2025613 AMAQI
23rd Jul 2025604 AMAQI

25°C17/34°C

23rd Jul 2025595 AMAQI
23rd Jul 2025626 AMAQI
23rd Jul 2025647 AMAQI
23rd Jul 2025658 AMAQI
23rd Jul 2025669 AMAQI
23rd Jul 20256610 AMAQI
23rd Jul 20256411 AMAQI
23rd Jul 20256412 PMAQI
23rd Jul 2025631 PMAQI
23rd Jul 2025652 PMAQI
23rd Jul 2025643 PMAQI
23rd Jul 2025644 PMAQI
23rd Jul 2025645 PMAQI
23rd Jul 2025646 PMAQI
23rd Jul 2025647 PMAQI
23rd Jul 2025648 PMAQI
23rd Jul 2025639 PMAQI
23rd Jul 20256310 PMAQI
23rd Jul 20256411 PMAQI
24th Jul 20256112 AMAQI
24th Jul 2025611 AMAQI
24th Jul 2025562 AMAQI
24th Jul 2025573 AMAQI
24th Jul 2025554 AMAQI

26°C19/35°C

24th Jul 2025545 AMAQI
24th Jul 2025556 AMAQI
24th Jul 2025567 AMAQI
24th Jul 2025578 AMAQI
24th Jul 2025569 AMAQI
24th Jul 20255710 AMAQI
24th Jul 20255711 AMAQI
24th Jul 20255712 PMAQI
24th Jul 2025561 PMAQI
24th Jul 2025572 PMAQI
24th Jul 2025573 PMAQI
24th Jul 2025564 PMAQI
24th Jul 2025565 PMAQI
24th Jul 2025566 PMAQI
24th Jul 2025577 PMAQI
24th Jul 2025568 PMAQI
24th Jul 2025519 PMAQI
24th Jul 20255210 PMAQI
24th Jul 20255111 PMAQI
25th Jul 20255012 AMAQI
25th Jul 2025461 AMAQI
25th Jul 2025312 AMAQI
25th Jul 2025283 AMAQI
25th Jul 2025304 AMAQI

28°C22/37°C

25th Jul 2025285 AMAQI
25th Jul 2025286 AMAQI
25th Jul 2025287 AMAQI
25th Jul 2025288 AMAQI
25th Jul 2025289 AMAQI
25th Jul 20253110 AMAQI
25th Jul 20253111 AMAQI
25th Jul 20253112 PMAQI
25th Jul 2025331 PMAQI
25th Jul 2025332 PMAQI
25th Jul 2025323 PMAQI
25th Jul 2025324 PMAQI
25th Jul 2025325 PMAQI
25th Jul 2025326 PMAQI
25th Jul 2025327 PMAQI
25th Jul 2025328 PMAQI
25th Jul 2025349 PMAQI
25th Jul 20253610 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20253512 AMAQI
26th Jul 2025321 AMAQI
26th Jul 2025242 AMAQI
26th Jul 2025213 AMAQI
26th Jul 2025214 AMAQI

25°C23/29°C

26th Jul 2025205 AMAQI
26th Jul 2025216 AMAQI
26th Jul 2025227 AMAQI
26th Jul 2025228 AMAQI
26th Jul 2025239 AMAQI
26th Jul 20252310 AMAQI
26th Jul 20252411 AMAQI
26th Jul 20252412 PMAQI
26th Jul 2025241 PMAQI
26th Jul 2025262 PMAQI
26th Jul 2025263 PMAQI
26th Jul 2025274 PMAQI
26th Jul 2025295 PMAQI
26th Jul 2025296 PMAQI
26th Jul 2025297 PMAQI
26th Jul 2025288 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253210 PMAQI
26th Jul 20253011 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025271 AMAQI
27th Jul 2025242 AMAQI
27th Jul 2025243 AMAQI
27th Jul 2025244 AMAQI

26°C22/31°C

27th Jul 2025255 AMAQI
27th Jul 2025246 AMAQI
27th Jul 2025237 AMAQI
27th Jul 2025248 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20253211 AMAQI
27th Jul 20253412 PMAQI
27th Jul 2025381 PMAQI
27th Jul 2025362 PMAQI
27th Jul 2025343 PMAQI
27th Jul 2025324 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025327 PMAQI
27th Jul 2025308 PMAQI
27th Jul 2025349 PMAQI
27th Jul 20253310 PMAQI
27th Jul 20253311 PMAQI
28th Jul 20253312 AMAQI
28th Jul 2025331 AMAQI
28th Jul 2025332 AMAQI
28th Jul 2025353 AMAQI
28th Jul 2025334 AMAQI

27°C21/31°C

28th Jul 2025345 AMAQI
28th Jul 2025366 AMAQI
28th Jul 2025367 AMAQI
28th Jul 2025358 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20253010 AMAQI
28th Jul 20252911 AMAQI
28th Jul 20252912 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025352 PMAQI
28th Jul 2025373 PMAQI
28th Jul 2025394 PMAQI
28th Jul 2025385 PMAQI
28th Jul 2025376 PMAQI
28th Jul 2025357 PMAQI
28th Jul 2025358 PMAQI
28th Jul 2025359 PMAQI
28th Jul 20253610 PMAQI
28th Jul 20253811 PMAQI
29th Jul 20253512 AMAQI
29th Jul 2025351 AMAQI
29th Jul 2025332 AMAQI
29th Jul 2025343 AMAQI
29th Jul 2025354 AMAQI

27°C22/34°C

29th Jul 2025345 AMAQI
29th Jul 2025366 AMAQI
29th Jul 2025377 AMAQI
29th Jul 2025408 AMAQI
29th Jul 2025419 AMAQI
29th Jul 20254310 AMAQI
29th Jul 20254211 AMAQI
29th Jul 20254212 PMAQI
29th Jul 2025421 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025443 PMAQI
29th Jul 2025444 PMAQI
29th Jul 2025445 PMAQI
29th Jul 2025446 PMAQI
29th Jul 2025427 PMAQI
29th Jul 2025418 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254511 PMAQI
30th Jul 20254412 AMAQI
30th Jul 2025461 AMAQI
30th Jul 2025442 AMAQI
30th Jul 2025463 AMAQI
30th Jul 2025444 AMAQI

27°C20/36°C

30th Jul 2025465 AMAQI
30th Jul 2025476 AMAQI
30th Jul 2025487 AMAQI
30th Jul 2025478 AMAQI
30th Jul 2025479 AMAQI
30th Jul 20254810 AMAQI
30th Jul 20254811 AMAQI
30th Jul 20254912 PMAQI
30th Jul 2025451 PMAQI
30th Jul 2025442 PMAQI
30th Jul 2025443 PMAQI
30th Jul 2025444 PMAQI
30th Jul 2025445 PMAQI
30th Jul 2025446 PMAQI
30th Jul 2025447 PMAQI
30th Jul 2025448 PMAQI
30th Jul 2025509 PMAQI
30th Jul 20255410 PMAQI
30th Jul 20255611 PMAQI
31st Jul 20255612 AMAQI
31st Jul 2025561 AMAQI
31st Jul 2025552 AMAQI
31st Jul 2025543 AMAQI
31st Jul 2025544 AMAQI

25°C22/30°C

31st Jul 2025625 AMAQI
5 AM
31st Jul 2025806 AMAQI
31st Jul 20251097 AMAQI
31st Jul 20251238 AMAQI
31st Jul 20251369 AMAQI
31st Jul 202514210 AMAQI
31st Jul 202515211 AMAQI
31st Jul 202515912 PMAQI
12 PM
31st Jul 20251501 PMAQI
31st Jul 20251712 PMAQI
31st Jul 20251703 PMAQI
31st Jul 20251694 PMAQI
31st Jul 20251455 PMAQI
8 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 5 PM

51AQI

13 hours / Day
390 hours / Month
Avg. Lowest Time
5 AM - 8 PM

51AQI

16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 PM (Avg. 51), while the lowest AQI was between 5 AM to 8 PM (Avg. 51).
Night time
Avg. Highest Time
12 AM - 11 PM

48AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM

48AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 48), while the lowest AQI was between 12 AM to 11 PM (Avg. 48).

2025 Days Vs Air Quality

Joliet, Illinois, United States

2025

83%

176

17%

35

Total number of days with different AQI categories in last 212 days in 2025 (153 days remaining)

Good
176 Days
Moderate
35 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 83%

Health Risk Level:

Low

In 2025, 83% of 212 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

Joliet, Illinois, United States

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

1st January 2025
22AQI
2nd January 2025
24AQI
3rd January 2025
24AQI
4th January 2025
21AQI
5th January 2025
21AQI
6th January 2025
18AQI
7th January 2025
22AQI
8th January 2025
25AQI
9th January 2025
45AQI
10th January 2025
66AQI
11th January 2025
38AQI
12th January 2025
41AQI
13th January 2025
20AQI
14th January 2025
25AQI
15th January 2025
38AQI
16th January 2025
38AQI
17th January 2025
30AQI
18th January 2025
22AQI
19th January 2025
19AQI
20th January 2025
19AQI
21st January 2025
21AQI
22nd January 2025
24AQI
23rd January 2025
29AQI
24th January 2025
33AQI
25th January 2025
27AQI
26th January 2025
20AQI
27th January 2025
22AQI
28th January 2025
22AQI
29th January 2025
21AQI
30th January 2025
34AQI
31st January 2025
37AQI
1st February 2025
20AQI
2nd February 2025
46AQI
3rd February 2025
45AQI
4th February 2025
20AQI
5th February 2025
27AQI
6th February 2025
29AQI
7th February 2025
23AQI
8th February 2025
31AQI
9th February 2025
31AQI
10th February 2025
28AQI
11th February 2025
35AQI
12th February 2025
43AQI
13th February 2025
31AQI
14th February 2025
37AQI
15th February 2025
46AQI
16th February 2025
28AQI
17th February 2025
22AQI
18th February 2025
22AQI
19th February 2025
22AQI
20th February 2025
24AQI
21st February 2025
33AQI
22nd February 2025
36AQI
23rd February 2025
53AQI
24th February 2025
42AQI
25th February 2025
36AQI
26th February 2025
42AQI
27th February 2025
40AQI
28th February 2025
24AQI
1st March 2025
24AQI
2nd March 2025
27AQI
3rd March 2025
34AQI
4th March 2025
32AQI
5th March 2025
25AQI
6th March 2025
24AQI
7th March 2025
31AQI
8th March 2025
33AQI
9th March 2025
25AQI
10th March 2025
30AQI
11th March 2025
28AQI
12th March 2025
36AQI
13th March 2025
50AQI
14th March 2025
49AQI
15th March 2025
71AQI
16th March 2025
21AQI
17th March 2025
22AQI
18th March 2025
25AQI
19th March 2025
29AQI
20th March 2025
17AQI
21st March 2025
22AQI
22nd March 2025
21AQI
23rd March 2025
25AQI
24th March 2025
19AQI
25th March 2025
23AQI
26th March 2025
44AQI
27th March 2025
48AQI
28th March 2025
41AQI
29th March 2025
40AQI
30th March 2025
30AQI
31st March 2025
18AQI
1st April 2025
23AQI
2nd April 2025
35AQI
3rd April 2025
27AQI
4th April 2025
35AQI
5th April 2025
24AQI
6th April 2025
23AQI
7th April 2025
26AQI
8th April 2025
18AQI
9th April 2025
32AQI
10th April 2025
50AQI
11th April 2025
49AQI
12th April 2025
50AQI
13th April 2025
38AQI
14th April 2025
35AQI
15th April 2025
20AQI
16th April 2025
27AQI
17th April 2025
39AQI
18th April 2025
52AQI
19th April 2025
44AQI
20th April 2025
41AQI
21st April 2025
20AQI
22nd April 2025
30AQI
23rd April 2025
28AQI
24th April 2025
42AQI
25th April 2025
33AQI
26th April 2025
20AQI
27th April 2025
31AQI
28th April 2025
36AQI
29th April 2025
33AQI
30th April 2025
23AQI
1st May 2025
31AQI
2nd May 2025
38AQI
3rd May 2025
17AQI
4th May 2025
17AQI
5th May 2025
29AQI
6th May 2025
39AQI
7th May 2025
36AQI
8th May 2025
20AQI
9th May 2025
24AQI
10th May 2025
36AQI
11th May 2025
27AQI
12th May 2025
36AQI
13th May 2025
34AQI
14th May 2025
42AQI
15th May 2025
51AQI
16th May 2025
38AQI
17th May 2025
23AQI
18th May 2025
23AQI
19th May 2025
19AQI
20th May 2025
27AQI
21st May 2025
28AQI
22nd May 2025
15AQI
23rd May 2025
21AQI
24th May 2025
19AQI
25th May 2025
18AQI
26th May 2025
23AQI
27th May 2025
27AQI
28th May 2025
33AQI
29th May 2025
41AQI
30th May 2025
45AQI
31st May 2025
44AQI
1st June 2025
42AQI
2nd June 2025
41AQI
3rd June 2025
57AQI
4th June 2025
50AQI
5th June 2025
86AQI
6th June 2025
77AQI
7th June 2025
84AQI
8th June 2025
75AQI
9th June 2025
71AQI
10th June 2025
61AQI
11th June 2025
71AQI
12th June 2025
81AQI
13th June 2025
79AQI
14th June 2025
69AQI
15th June 2025
55AQI
16th June 2025
55AQI
17th June 2025
44AQI
18th June 2025
31AQI
19th June 2025
28AQI
20th June 2025
43AQI
21st June 2025
43AQI
22nd June 2025
47AQI
23rd June 2025
58AQI
24th June 2025
54AQI
25th June 2025
39AQI
26th June 2025
49AQI
27th June 2025
45AQI
28th June 2025
26AQI
29th June 2025
39AQI
30th June 2025
32AQI
1st July 2025
32AQI
2nd July 2025
53AQI
3rd July 2025
53AQI
4th July 2025
56AQI
5th July 2025
66AQI
6th July 2025
53AQI
7th July 2025
54AQI
8th July 2025
69AQI
9th July 2025
48AQI
10th July 2025
51AQI
11th July 2025
40AQI
12th July 2025
28AQI
13th July 2025
57AQI
14th July 2025
75AQI
15th July 2025
79AQI
16th July 2025
48AQI
17th July 2025
30AQI
18th July 2025
28AQI
19th July 2025
33AQI
20th July 2025
27AQI
21st July 2025
62AQI
22nd July 2025
77AQI
23rd July 2025
64AQI
24th July 2025
56AQI
25th July 2025
33AQI
26th July 2025
26AQI
27th July 2025
29AQI
28th July 2025
34AQI
29th July 2025
40AQI
30th July 2025
46AQI

28AQI

33AQI

31AQI

33AQI

30AQI

54AQI

48AQI

No. of days

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

202537AQI

30
1
27
1
30
1
29
1
30
1
15
15
15
15
176
35

Highest AQI recorded in

June

54AQI

Lowest AQI recorded in

January

28AQI

202432AQI

29
2
21
8
14
1
30
31
27
3
26
5
24
7
13
27
4
29
1
29
2
300
33

Highest AQI recorded in

July

38AQI

Lowest AQI recorded in

April

23AQI

202342AQI

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 recorded in

June

79AQI

Lowest AQI recorded in

December

33AQI

202237AQI

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 recorded in

November

42AQI

Lowest AQI recorded in

April

30AQI

202140AQI

21
9
17
11
23
6
18
8
30
1
26
4
19
12
21
9
29
1
28
3
19
9
19
12
270
85

Highest AQI recorded in

July

48AQI

Lowest AQI recorded in

September

31AQI

202038AQI

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 recorded in

December

44AQI

Lowest AQI recorded in

May

32AQI

Most & Least Polluted Years Over the Last 6 Years

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

Joliet's annual 2025 AQI (37) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (38), 2021 (40), 2022 (37), 2023 (42), 2024 (32).