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East St Louis, 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+

October Air Quality Analysis

East St Louis, Illinois, United States

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Oct 2023
81AQI
Lowest AQI recorded on
14th Oct 2023
11AQI

Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 59 of Moderate air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 4th Oct - 5th Oct 2025

East St Louis, Illinois, United States

AQI
Day
Night
.

6 AM4th Oct 2025

7 PM

5 AM5th Oct 2025

Day time
Avg. Highest Time
6PM4th Oct

70AQI

Avg. Lowest Time
3PM4th Oct

55AQI

Night time
Avg. Highest Time
7PM4th Oct

66AQI

Avg. Lowest Time
5AM5th Oct

50AQI

In the last 24 hours,

East St Louis's AQI reached its highest point of 70 at 6 PM during the Day, while the lowest point, 50, was recorded at 5 AM during the Night between 4th Oct and 5th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

East St Louis, Illinois, United States

SepOct
05th - 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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th
Day
Night
5th Sep 2025626 AMAQI
5th Sep 2025627 AMAQI
5th Sep 2025628 AMAQI
5th Sep 2025639 AMAQI
5th Sep 20256210 AMAQI
5th Sep 20256011 AMAQI
5th Sep 20255812 PMAQI
5th Sep 2025571 PMAQI
5th Sep 2025552 PMAQI
5th Sep 2025543 PMAQI
5th Sep 2025494 PMAQI
5th Sep 2025455 PMAQI
5th Sep 2025436 PMAQI
5th Sep 2025567 PMAQI
5th Sep 2025388 PMAQI
5th Sep 2025389 PMAQI
5th Sep 20253810 PMAQI
5th Sep 20253811 PMAQI
6th Sep 20253812 AMAQI
6th Sep 2025341 AMAQI
6th Sep 2025322 AMAQI
6th Sep 2025293 AMAQI
6th Sep 2025324 AMAQI
6th Sep 2025305 AMAQI

20°C16/27°C

6th Sep 2025306 AMAQI
6th Sep 2025317 AMAQI
6th Sep 2025328 AMAQI
6th Sep 2025329 AMAQI
6th Sep 20253410 AMAQI
6th Sep 20253111 AMAQI
6th Sep 20252812 PMAQI
6th Sep 2025241 PMAQI
6th Sep 2025202 PMAQI
6th Sep 2025203 PMAQI
6th Sep 2025224 PMAQI
6th Sep 2025225 PMAQI
6th Sep 2025216 PMAQI
6th Sep 2025267 PMAQI
6th Sep 2025308 PMAQI
6th Sep 2025339 PMAQI
6th Sep 20253610 PMAQI
6th Sep 20254211 PMAQI
7th Sep 20254112 AMAQI
7th Sep 2025341 AMAQI
7th Sep 2025302 AMAQI
7th Sep 2025293 AMAQI
7th Sep 2025274 AMAQI
7th Sep 2025275 AMAQI

20°C15/27°C

7th Sep 2025286 AMAQI
7th Sep 2025297 AMAQI
7th Sep 2025288 AMAQI
7th Sep 2025279 AMAQI
7th Sep 20252710 AMAQI
7th Sep 20252411 AMAQI
7th Sep 20252512 PMAQI
7th Sep 2025241 PMAQI
7th Sep 2025232 PMAQI
7th Sep 2025233 PMAQI
7th Sep 2025224 PMAQI
7th Sep 2025235 PMAQI
7th Sep 2025236 PMAQI
7th Sep 2025237 PMAQI
7th Sep 2025258 PMAQI
7th Sep 2025289 PMAQI
7th Sep 20253010 PMAQI
7th Sep 20254411 PMAQI
8th Sep 20254912 AMAQI
8th Sep 2025531 AMAQI
8th Sep 2025562 AMAQI
8th Sep 2025483 AMAQI
8th Sep 2025364 AMAQI
8th Sep 2025285 AMAQI

19°C12/26°C

8th Sep 2025356 AMAQI
8th Sep 2025397 AMAQI
8th Sep 2025418 AMAQI
8th Sep 2025409 AMAQI
8th Sep 20253710 AMAQI
8th Sep 20253211 AMAQI
8th Sep 20252612 PMAQI
8th Sep 2025231 PMAQI
8th Sep 2025222 PMAQI
8th Sep 2025213 PMAQI
8th Sep 2025194 PMAQI
8th Sep 2025215 PMAQI
8th Sep 2025186 PMAQI
8th Sep 2025327 PMAQI
8th Sep 2025278 PMAQI
8th Sep 2025249 PMAQI
8th Sep 20252710 PMAQI
8th Sep 20254311 PMAQI
9th Sep 20255112 AMAQI
9th Sep 2025561 AMAQI
9th Sep 2025522 AMAQI
9th Sep 2025503 AMAQI
9th Sep 2025404 AMAQI
9th Sep 2025385 AMAQI

17°C7/25°C

9th Sep 2025376 AMAQI
9th Sep 2025407 AMAQI
9th Sep 2025508 AMAQI
9th Sep 2025509 AMAQI
9th Sep 20255310 AMAQI
9th Sep 20254511 AMAQI
9th Sep 20254412 PMAQI
9th Sep 2025481 PMAQI
9th Sep 2025432 PMAQI
9th Sep 2025423 PMAQI
9th Sep 2025534 PMAQI
9th Sep 2025545 PMAQI
9th Sep 2025586 PMAQI
9th Sep 2025467 PMAQI
9th Sep 2025428 PMAQI
9th Sep 2025469 PMAQI
9th Sep 20255210 PMAQI
9th Sep 20255611 PMAQI
10th Sep 20255512 AMAQI
10th Sep 2025541 AMAQI
10th Sep 2025522 AMAQI
10th Sep 2025503 AMAQI
10th Sep 2025464 AMAQI
10th Sep 2025425 AMAQI

19°C9/30°C

10th Sep 2025456 AMAQI
10th Sep 2025547 AMAQI
10th Sep 2025568 AMAQI
10th Sep 2025589 AMAQI
10th Sep 20255710 AMAQI
10th Sep 20255611 AMAQI
10th Sep 20255612 PMAQI
10th Sep 2025561 PMAQI
10th Sep 2025582 PMAQI
10th Sep 2025563 PMAQI
10th Sep 2025554 PMAQI
10th Sep 2025555 PMAQI
10th Sep 2025556 PMAQI
10th Sep 2025537 PMAQI
10th Sep 2025558 PMAQI
10th Sep 2025579 PMAQI
10th Sep 20255810 PMAQI
10th Sep 20256111 PMAQI
11th Sep 20256312 AMAQI
11th Sep 2025641 AMAQI
11th Sep 2025622 AMAQI
11th Sep 2025643 AMAQI
11th Sep 2025654 AMAQI
11th Sep 2025625 AMAQI

25°C16/34°C

11th Sep 2025666 AMAQI
11th Sep 2025617 AMAQI
11th Sep 2025668 AMAQI
11th Sep 2025679 AMAQI
11th Sep 20257410 AMAQI
11th Sep 20257611 AMAQI
11th Sep 20256612 PMAQI
11th Sep 2025631 PMAQI
11th Sep 2025622 PMAQI
11th Sep 2025583 PMAQI
11th Sep 2025604 PMAQI
11th Sep 2025595 PMAQI
11th Sep 2025606 PMAQI
11th Sep 2025627 PMAQI
11th Sep 2025608 PMAQI
11th Sep 2025609 PMAQI
11th Sep 20256010 PMAQI
11th Sep 20256011 PMAQI
12th Sep 20256012 AMAQI
12th Sep 2025601 AMAQI
12th Sep 2025592 AMAQI
12th Sep 2025593 AMAQI
12th Sep 2025604 AMAQI
12th Sep 2025605 AMAQI

26°C16/35°C

12th Sep 2025616 AMAQI
12th Sep 2025607 AMAQI
12th Sep 2025618 AMAQI
12th Sep 2025659 AMAQI
12th Sep 20256510 AMAQI
12th Sep 20256811 AMAQI
12th Sep 20256612 PMAQI
12th Sep 2025671 PMAQI
12th Sep 2025662 PMAQI
12th Sep 2025653 PMAQI
12th Sep 2025644 PMAQI
12th Sep 2025615 PMAQI
12th Sep 2025606 PMAQI
12th Sep 2025627 PMAQI
12th Sep 2025608 PMAQI
12th Sep 2025609 PMAQI
12th Sep 20256010 PMAQI
12th Sep 20256011 PMAQI
13th Sep 20256012 AMAQI
13th Sep 2025591 AMAQI
13th Sep 2025592 AMAQI
13th Sep 2025593 AMAQI
13th Sep 2025584 AMAQI
13th Sep 2025585 AMAQI

26°C17/36°C

13th Sep 2025596 AMAQI
13th Sep 2025597 AMAQI
13th Sep 2025618 AMAQI
13th Sep 2025629 AMAQI
13th Sep 20256310 AMAQI
13th Sep 20256511 AMAQI
13th Sep 20256512 PMAQI
13th Sep 2025641 PMAQI
13th Sep 2025622 PMAQI
13th Sep 2025603 PMAQI
13th Sep 2025584 PMAQI
13th Sep 2025585 PMAQI
13th Sep 2025576 PMAQI
13th Sep 2025597 PMAQI
13th Sep 2025598 PMAQI
13th Sep 2025579 PMAQI
13th Sep 20255810 PMAQI
13th Sep 20255911 PMAQI
14th Sep 20256012 AMAQI
14th Sep 2025581 AMAQI
14th Sep 2025572 AMAQI
14th Sep 2025583 AMAQI
14th Sep 2025584 AMAQI
14th Sep 2025575 AMAQI

28°C19/38°C

14th Sep 2025576 AMAQI
14th Sep 2025587 AMAQI
14th Sep 2025588 AMAQI
14th Sep 2025589 AMAQI
14th Sep 20255910 AMAQI
14th Sep 20255911 AMAQI
14th Sep 20256112 PMAQI
14th Sep 2025601 PMAQI
14th Sep 2025602 PMAQI
14th Sep 2025593 PMAQI
14th Sep 2025584 PMAQI
14th Sep 2025575 PMAQI
14th Sep 2025566 PMAQI
14th Sep 2025587 PMAQI
14th Sep 2025588 PMAQI
14th Sep 2025549 PMAQI
14th Sep 20255410 PMAQI
14th Sep 20255411 PMAQI
15th Sep 20255512 AMAQI
15th Sep 2025561 AMAQI
15th Sep 2025542 AMAQI
15th Sep 2025543 AMAQI
15th Sep 2025544 AMAQI
15th Sep 2025545 AMAQI

30°C22/39°C

15th Sep 2025556 AMAQI
15th Sep 2025537 AMAQI
15th Sep 2025438 AMAQI
15th Sep 2025639 AMAQI
15th Sep 20256110 AMAQI
15th Sep 20256211 AMAQI
15th Sep 20256212 PMAQI
15th Sep 2025651 PMAQI
15th Sep 2025622 PMAQI
15th Sep 2025613 PMAQI
15th Sep 2025614 PMAQI
15th Sep 2025605 PMAQI
15th Sep 2025586 PMAQI
15th Sep 2025567 PMAQI
15th Sep 2025598 PMAQI
15th Sep 2025599 PMAQI
15th Sep 20256010 PMAQI
15th Sep 20256011 PMAQI
16th Sep 20256112 AMAQI
16th Sep 2025601 AMAQI
16th Sep 2025592 AMAQI
16th Sep 2025583 AMAQI
16th Sep 2025604 AMAQI
16th Sep 2025585 AMAQI

28°C20/36°C

16th Sep 2025606 AMAQI
16th Sep 2025637 AMAQI
16th Sep 2025628 AMAQI
16th Sep 2025649 AMAQI
16th Sep 20256610 AMAQI
16th Sep 20256611 AMAQI
16th Sep 20257012 PMAQI
16th Sep 2025641 PMAQI
16th Sep 2025602 PMAQI
16th Sep 2025563 PMAQI
16th Sep 2025554 PMAQI
16th Sep 2025545 PMAQI
16th Sep 2025566 PMAQI
16th Sep 2025607 PMAQI
16th Sep 2025628 PMAQI
16th Sep 2025609 PMAQI
16th Sep 20256010 PMAQI
16th Sep 20256011 PMAQI
17th Sep 20255912 AMAQI
17th Sep 2025581 AMAQI
17th Sep 2025582 AMAQI
17th Sep 2025583 AMAQI
17th Sep 2025564 AMAQI
17th Sep 2025545 AMAQI

28°C20/36°C

17th Sep 2025536 AMAQI
17th Sep 2025547 AMAQI
17th Sep 2025568 AMAQI
17th Sep 2025579 AMAQI
17th Sep 20255710 AMAQI
17th Sep 20255811 AMAQI
17th Sep 20255612 PMAQI
17th Sep 2025561 PMAQI
17th Sep 2025572 PMAQI
17th Sep 2025573 PMAQI
17th Sep 2025574 PMAQI
17th Sep 2025565 PMAQI
17th Sep 2025556 PMAQI
17th Sep 2025587 PMAQI
17th Sep 2025578 PMAQI
17th Sep 2025569 PMAQI
17th Sep 20255810 PMAQI
17th Sep 20256011 PMAQI
18th Sep 20256212 AMAQI
18th Sep 2025621 AMAQI
18th Sep 2025642 AMAQI
18th Sep 2025643 AMAQI
18th Sep 2025624 AMAQI
18th Sep 2025645 AMAQI

26°C17/35°C

18th Sep 2025726 AMAQI
18th Sep 2025687 AMAQI
18th Sep 2025708 AMAQI
18th Sep 2025779 AMAQI
18th Sep 20258210 AMAQI
18th Sep 20257111 AMAQI
18th Sep 20257412 PMAQI
18th Sep 2025651 PMAQI
18th Sep 2025642 PMAQI
18th Sep 2025663 PMAQI
18th Sep 2025654 PMAQI
18th Sep 2025645 PMAQI
18th Sep 2025636 PMAQI
18th Sep 2025647 PMAQI
18th Sep 2025658 PMAQI
18th Sep 2025629 PMAQI
18th Sep 20256610 PMAQI
18th Sep 20256511 PMAQI
19th Sep 20256512 AMAQI
19th Sep 2025591 AMAQI
19th Sep 2025442 AMAQI
19th Sep 2025443 AMAQI
19th Sep 2025434 AMAQI
19th Sep 2025435 AMAQI

26°C15/37°C

19th Sep 2025426 AMAQI
19th Sep 2025407 AMAQI
19th Sep 2025398 AMAQI
19th Sep 2025429 AMAQI
19th Sep 20254410 AMAQI
19th Sep 20254811 AMAQI
19th Sep 20254712 PMAQI
19th Sep 2025471 PMAQI
19th Sep 2025482 PMAQI
19th Sep 2025523 PMAQI
19th Sep 2025524 PMAQI
19th Sep 2025505 PMAQI
19th Sep 2025516 PMAQI
19th Sep 2025547 PMAQI
19th Sep 2025528 PMAQI
19th Sep 2025539 PMAQI
19th Sep 20255310 PMAQI
19th Sep 20255311 PMAQI
20th Sep 20255412 AMAQI
20th Sep 2025541 AMAQI
20th Sep 2025542 AMAQI
20th Sep 2025543 AMAQI
20th Sep 2025524 AMAQI
20th Sep 2025555 AMAQI

25°C20/32°C

20th Sep 2025546 AMAQI
20th Sep 2025527 AMAQI
20th Sep 2025528 AMAQI
20th Sep 2025539 AMAQI
20th Sep 20255310 AMAQI
20th Sep 20255311 AMAQI
20th Sep 20255412 PMAQI
20th Sep 2025521 PMAQI
20th Sep 2025542 PMAQI
20th Sep 2025543 PMAQI
20th Sep 2025534 PMAQI
20th Sep 2025525 PMAQI
20th Sep 2025526 PMAQI
20th Sep 2025547 PMAQI
20th Sep 2025548 PMAQI
20th Sep 2025539 PMAQI
20th Sep 20255310 PMAQI
20th Sep 20255211 PMAQI
21st Sep 20255412 AMAQI
21st Sep 2025521 AMAQI
21st Sep 2025492 AMAQI
21st Sep 2025523 AMAQI
21st Sep 2025504 AMAQI
21st Sep 2025505 AMAQI

24°C20/29°C

21st Sep 2025526 AMAQI
21st Sep 2025517 AMAQI
21st Sep 2025518 AMAQI
21st Sep 2025509 AMAQI
21st Sep 20255410 AMAQI
21st Sep 20255411 AMAQI
21st Sep 20254612 PMAQI
21st Sep 2025441 PMAQI
21st Sep 2025452 PMAQI
21st Sep 2025483 PMAQI
21st Sep 2025484 PMAQI
21st Sep 2025485 PMAQI
21st Sep 2025456 PMAQI
21st Sep 2025507 PMAQI
21st Sep 2025498 PMAQI
21st Sep 2025469 PMAQI
21st Sep 20254510 PMAQI
21st Sep 20254611 PMAQI
22nd Sep 20254412 AMAQI
22nd Sep 2025451 AMAQI
22nd Sep 2025332 AMAQI
22nd Sep 2025343 AMAQI
22nd Sep 2025314 AMAQI
22nd Sep 2025365 AMAQI

25°C18/35°C

22nd Sep 2025346 AMAQI
22nd Sep 2025337 AMAQI
22nd Sep 2025348 AMAQI
22nd Sep 2025369 AMAQI
22nd Sep 20253810 AMAQI
22nd Sep 20253511 AMAQI
22nd Sep 20253412 PMAQI
22nd Sep 2025351 PMAQI
22nd Sep 2025382 PMAQI
22nd Sep 2025393 PMAQI
22nd Sep 2025404 PMAQI
22nd Sep 2025425 PMAQI
22nd Sep 2025446 PMAQI
22nd Sep 2025367 PMAQI
22nd Sep 2025388 PMAQI
22nd Sep 2025379 PMAQI
22nd Sep 20253810 PMAQI
22nd Sep 20254211 PMAQI
23rd Sep 20254412 AMAQI
23rd Sep 2025461 AMAQI
23rd Sep 2025482 AMAQI
23rd Sep 2025443 AMAQI
23rd Sep 2025464 AMAQI
23rd Sep 2025475 AMAQI

22°C19/28°C

23rd Sep 2025436 AMAQI
23rd Sep 2025497 AMAQI
23rd Sep 2025528 AMAQI
23rd Sep 2025529 AMAQI
23rd Sep 20255210 AMAQI
23rd Sep 20255111 AMAQI
23rd Sep 20255012 PMAQI
23rd Sep 2025521 PMAQI
23rd Sep 2025482 PMAQI
23rd Sep 2025503 PMAQI
23rd Sep 2025514 PMAQI
23rd Sep 2025485 PMAQI
23rd Sep 2025466 PMAQI
23rd Sep 2025467 PMAQI
23rd Sep 2025478 PMAQI
23rd Sep 2025449 PMAQI
23rd Sep 20254410 PMAQI
23rd Sep 20254111 PMAQI
24th Sep 20254112 AMAQI
24th Sep 2025411 AMAQI
24th Sep 2025262 AMAQI
24th Sep 2025243 AMAQI
24th Sep 2025244 AMAQI
24th Sep 2025265 AMAQI

22°C19/29°C

24th Sep 2025306 AMAQI
24th Sep 2025327 AMAQI
24th Sep 2025328 AMAQI
24th Sep 2025349 AMAQI
24th Sep 20253610 AMAQI
24th Sep 20253411 AMAQI
24th Sep 20253012 PMAQI
24th Sep 2025301 PMAQI
24th Sep 2025342 PMAQI
24th Sep 2025343 PMAQI
24th Sep 2025334 PMAQI
24th Sep 2025325 PMAQI
24th Sep 2025346 PMAQI
24th Sep 2025347 PMAQI
24th Sep 2025348 PMAQI
24th Sep 2025379 PMAQI
24th Sep 20253510 PMAQI
24th Sep 20253611 PMAQI
25th Sep 20253812 AMAQI
25th Sep 2025321 AMAQI
25th Sep 2025282 AMAQI
25th Sep 2025283 AMAQI
25th Sep 2025284 AMAQI
25th Sep 2025285 AMAQI

21°C19/23°C

25th Sep 2025286 AMAQI
25th Sep 2025287 AMAQI
25th Sep 2025288 AMAQI
25th Sep 2025289 AMAQI
25th Sep 20253010 AMAQI
25th Sep 20252811 AMAQI
25th Sep 20252312 PMAQI
25th Sep 2025261 PMAQI
25th Sep 2025292 PMAQI
25th Sep 2025283 PMAQI
25th Sep 2025304 PMAQI
25th Sep 2025305 PMAQI
25th Sep 2025316 PMAQI
25th Sep 2025307 PMAQI
25th Sep 2025258 PMAQI
25th Sep 2025229 PMAQI
25th Sep 20252710 PMAQI
25th Sep 20254411 PMAQI
26th Sep 20254112 AMAQI
26th Sep 2025331 AMAQI
26th Sep 2025342 AMAQI
26th Sep 2025323 AMAQI
26th Sep 2025294 AMAQI
26th Sep 2025285 AMAQI

21°C16/28°C

26th Sep 2025296 AMAQI
26th Sep 2025287 AMAQI
26th Sep 2025298 AMAQI
26th Sep 2025499 AMAQI
26th Sep 20254010 AMAQI
26th Sep 20254211 AMAQI
26th Sep 20253712 PMAQI
26th Sep 2025341 PMAQI
26th Sep 2025342 PMAQI
26th Sep 2025383 PMAQI
26th Sep 2025414 PMAQI
26th Sep 2025435 PMAQI
26th Sep 2025426 PMAQI
26th Sep 2025357 PMAQI
26th Sep 2025298 PMAQI
26th Sep 2025429 PMAQI
26th Sep 20255210 PMAQI
26th Sep 20253211 PMAQI
27th Sep 20253412 AMAQI
27th Sep 2025391 AMAQI
27th Sep 2025442 AMAQI
27th Sep 2025443 AMAQI
27th Sep 2025424 AMAQI
27th Sep 2025375 AMAQI

20°C13/30°C

27th Sep 2025336 AMAQI
27th Sep 2025337 AMAQI
27th Sep 2025338 AMAQI
27th Sep 2025359 AMAQI
27th Sep 20254310 AMAQI
27th Sep 20255311 AMAQI
27th Sep 20254612 PMAQI
27th Sep 2025261 PMAQI
27th Sep 2025242 PMAQI
27th Sep 2025283 PMAQI
27th Sep 2025284 PMAQI
27th Sep 2025285 PMAQI
27th Sep 2025286 PMAQI
27th Sep 2025337 PMAQI
27th Sep 2025428 PMAQI
27th Sep 2025399 PMAQI
27th Sep 20253910 PMAQI
27th Sep 20253911 PMAQI
28th Sep 20254312 AMAQI
28th Sep 2025501 AMAQI
28th Sep 2025542 AMAQI
28th Sep 2025553 AMAQI
28th Sep 2025494 AMAQI
28th Sep 2025445 AMAQI

22°C12/32°C

28th Sep 2025446 AMAQI
28th Sep 2025427 AMAQI
28th Sep 2025398 AMAQI
28th Sep 2025439 AMAQI
28th Sep 20254810 AMAQI
28th Sep 20254811 AMAQI
28th Sep 20254112 PMAQI
28th Sep 2025371 PMAQI
28th Sep 2025332 PMAQI
28th Sep 2025333 PMAQI
28th Sep 2025324 PMAQI
28th Sep 2025285 PMAQI
28th Sep 2025276 PMAQI
28th Sep 2025297 PMAQI
28th Sep 2025308 PMAQI
28th Sep 2025329 PMAQI
28th Sep 20254010 PMAQI
28th Sep 20254511 PMAQI
29th Sep 20254212 AMAQI
29th Sep 2025431 AMAQI
29th Sep 2025512 AMAQI
29th Sep 2025513 AMAQI
29th Sep 2025524 AMAQI
29th Sep 2025505 AMAQI

23°C13/35°C

29th Sep 2025556 AMAQI
29th Sep 2025617 AMAQI
29th Sep 2025768 AMAQI
29th Sep 2025819 AMAQI
29th Sep 20258610 AMAQI
29th Sep 20258511 AMAQI
29th Sep 20258712 PMAQI
29th Sep 2025741 PMAQI
29th Sep 2025522 PMAQI
29th Sep 2025443 PMAQI
29th Sep 2025464 PMAQI
29th Sep 2025405 PMAQI
29th Sep 2025386 PMAQI
29th Sep 2025357 PMAQI
29th Sep 2025428 PMAQI
29th Sep 2025529 PMAQI
29th Sep 20255910 PMAQI
29th Sep 20256711 PMAQI
30th Sep 20256412 AMAQI
30th Sep 2025571 AMAQI
30th Sep 2025552 AMAQI
30th Sep 2025553 AMAQI
30th Sep 2025554 AMAQI
30th Sep 2025535 AMAQI

24°C14/35°C

30th Sep 2025566 AMAQI
30th Sep 2025667 AMAQI
30th Sep 2025668 AMAQI
30th Sep 2025729 AMAQI
30th Sep 20258110 AMAQI
30th Sep 20259011 AMAQI
30th Sep 20259212 PMAQI
30th Sep 2025751 PMAQI
30th Sep 2025642 PMAQI
30th Sep 2025593 PMAQI
30th Sep 2025514 PMAQI
30th Sep 2025485 PMAQI
30th Sep 2025456 PMAQI
30th Sep 2025427 PMAQI
30th Sep 2025448 PMAQI
30th Sep 2025519 PMAQI
30th Sep 20255810 PMAQI
30th Sep 20256311 PMAQI
1st Oct 20256212 AMAQI
1st Oct 2025601 AMAQI
1st Oct 2025592 AMAQI
1st Oct 2025593 AMAQI
1st Oct 2025614 AMAQI
1st Oct 2025615 AMAQI

24°C15/34°C

1st Oct 2025636 AMAQI
1st Oct 2025617 AMAQI
1st Oct 2025588 AMAQI
1st Oct 2025689 AMAQI
1st Oct 20259310 AMAQI
1st Oct 20258711 AMAQI
1st Oct 20258312 PMAQI
1st Oct 2025731 PMAQI
1st Oct 2025692 PMAQI
1st Oct 2025663 PMAQI
1st Oct 2025644 PMAQI
1st Oct 2025565 PMAQI
1st Oct 2025556 PMAQI
1st Oct 2025597 PMAQI
1st Oct 2025588 PMAQI
1st Oct 2025569 PMAQI
1st Oct 20256710 PMAQI
1st Oct 20256811 PMAQI
2nd Oct 20257412 AMAQI
2nd Oct 2025751 AMAQI
2nd Oct 2025742 AMAQI
2nd Oct 2025883 AMAQI
2nd Oct 2025994 AMAQI
2nd Oct 2025945 AMAQI

24°C15/34°C

2nd Oct 2025706 AMAQI
2nd Oct 2025627 AMAQI
2nd Oct 2025648 AMAQI
2nd Oct 2025879 AMAQI
2nd Oct 202511210 AMAQI
2nd Oct 20259511 AMAQI
2nd Oct 20259112 PMAQI
2nd Oct 2025721 PMAQI
2nd Oct 2025662 PMAQI
2nd Oct 2025603 PMAQI
2nd Oct 2025564 PMAQI
2nd Oct 2025555 PMAQI
2nd Oct 2025406 PMAQI
2nd Oct 2025427 PMAQI
2nd Oct 2025428 PMAQI
2nd Oct 2025409 PMAQI
2nd Oct 20253810 PMAQI
2nd Oct 20254411 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025561 AMAQI
3rd Oct 2025522 AMAQI
3rd Oct 2025463 AMAQI
3rd Oct 2025434 AMAQI
3rd Oct 2025445 AMAQI

24°C16/34°C

3rd Oct 2025436 AMAQI
3rd Oct 2025517 AMAQI
3rd Oct 2025528 AMAQI
3rd Oct 2025569 AMAQI
3rd Oct 20259410 AMAQI
3rd Oct 20259311 AMAQI
3rd Oct 20258412 PMAQI
3rd Oct 2025771 PMAQI
3rd Oct 2025692 PMAQI
3rd Oct 2025663 PMAQI
3rd Oct 2025974 PMAQI
3rd Oct 2025965 PMAQI
3rd Oct 2025736 PMAQI
3rd Oct 2025797 PMAQI
3rd Oct 2025618 PMAQI
3rd Oct 2025579 PMAQI
3rd Oct 20256110 PMAQI
3rd Oct 20256011 PMAQI
4th Oct 20255912 AMAQI
4th Oct 2025621 AMAQI
4th Oct 2025592 AMAQI
4th Oct 2025573 AMAQI
4th Oct 2025574 AMAQI
4th Oct 2025575 AMAQI

26°C18/34°C

4th Oct 2025566 AMAQI
4th Oct 2025567 AMAQI
4th Oct 2025568 AMAQI
4th Oct 2025569 AMAQI
4th Oct 20256010 AMAQI
4th Oct 20256111 AMAQI
4th Oct 20255912 PMAQI
4th Oct 2025651 PMAQI
4th Oct 2025592 PMAQI
4th Oct 2025553 PMAQI
4th Oct 2025604 PMAQI
4th Oct 2025645 PMAQI
4th Oct 2025706 PMAQI
4th Oct 2025667 PMAQI
4th Oct 2025508 PMAQI
4th Oct 2025539 PMAQI
4th Oct 20255710 PMAQI
4th Oct 20255811 PMAQI
5th Oct 20255912 AMAQI
5th Oct 2025611 AMAQI
5th Oct 2025562 AMAQI
5th Oct 2025553 AMAQI
5th Oct 2025554 AMAQI
5th Oct 2025505 AMAQI

24°C16/33°C

5th Oct 2025506 AMAQI
6 AM
5th Oct 2025527 AMAQI
12 PM
7 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
10 AM - 11 AM

59AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
2 PM - 7 PM

48AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 11 AM (Avg. 59), while the lowest AQI was between 2 PM to 7 PM (Avg. 48).
Night time
Avg. Highest Time
12 AM - 1 AM

53AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
8 PM - 9 PM

47AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 53), while the lowest AQI was between 8 PM to 9 PM (Avg. 47).

2025 Days Vs Air Quality

East St Louis, Illinois, United States

2025

76%

210

23%

65

0.7%

2

Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)

Good
210 Days
Moderate
65 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 76%

Health Risk Level:

Low

In 2025, 76% of 278 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

East St Louis, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
23AQI
2nd January 2025
34AQI
3rd January 2025
26AQI
4th January 2025
21AQI
5th January 2025
21AQI
6th January 2025
19AQI
7th January 2025
27AQI
8th January 2025
39AQI
9th January 2025
54AQI
10th January 2025
55AQI
11th January 2025
37AQI
12th January 2025
31AQI
13th January 2025
23AQI
14th January 2025
28AQI
15th January 2025
38AQI
16th January 2025
33AQI
17th January 2025
34AQI
18th January 2025
21AQI
19th January 2025
18AQI
20th January 2025
20AQI
21st January 2025
23AQI
22nd January 2025
27AQI
23rd January 2025
31AQI
24th January 2025
34AQI
25th January 2025
40AQI
26th January 2025
31AQI
27th January 2025
31AQI
28th January 2025
23AQI
29th January 2025
29AQI
30th January 2025
37AQI
31st January 2025
21AQI
1st February 2025
36AQI
2nd February 2025
30AQI
3rd February 2025
35AQI
4th February 2025
27AQI
5th February 2025
28AQI
6th February 2025
29AQI
7th February 2025
31AQI
8th February 2025
31AQI
9th February 2025
33AQI
10th February 2025
29AQI
11th February 2025
33AQI
12th February 2025
55AQI
13th February 2025
31AQI
14th February 2025
32AQI
15th February 2025
30AQI
16th February 2025
36AQI
17th February 2025
20AQI
18th February 2025
21AQI
19th February 2025
21AQI
20th February 2025
22AQI
21st February 2025
36AQI
22nd February 2025
43AQI
23rd February 2025
36AQI
24th February 2025
37AQI
25th February 2025
37AQI
26th February 2025
31AQI
27th February 2025
29AQI
28th February 2025
29AQI
1st March 2025
25AQI
2nd March 2025
31AQI
3rd March 2025
33AQI
4th March 2025
47AQI
5th March 2025
24AQI
6th March 2025
30AQI
7th March 2025
28AQI
8th March 2025
35AQI
9th March 2025
48AQI
10th March 2025
46AQI
11th March 2025
56AQI
12th March 2025
55AQI
13th March 2025
68AQI
14th March 2025
56AQI
15th March 2025
132AQI
16th March 2025
29AQI
17th March 2025
50AQI
18th March 2025
38AQI
19th March 2025
41AQI
20th March 2025
27AQI
21st March 2025
40AQI
22nd March 2025
23AQI
23rd March 2025
27AQI
24th March 2025
21AQI
25th March 2025
27AQI
26th March 2025
39AQI
27th March 2025
51AQI
28th March 2025
37AQI
29th March 2025
41AQI
30th March 2025
26AQI
31st March 2025
20AQI
1st April 2025
34AQI
2nd April 2025
37AQI
3rd April 2025
31AQI
4th April 2025
23AQI
5th April 2025
24AQI
6th April 2025
21AQI
7th April 2025
32AQI
8th April 2025
22AQI
9th April 2025
32AQI
10th April 2025
46AQI
11th April 2025
42AQI
12th April 2025
53AQI
13th April 2025
42AQI
14th April 2025
39AQI
15th April 2025
24AQI
16th April 2025
38AQI
17th April 2025
49AQI
18th April 2025
57AQI
19th April 2025
48AQI
20th April 2025
50AQI
21st April 2025
24AQI
22nd April 2025
38AQI
23rd April 2025
38AQI
24th April 2025
48AQI
25th April 2025
40AQI
26th April 2025
27AQI
27th April 2025
26AQI
28th April 2025
37AQI
29th April 2025
35AQI
30th April 2025
32AQI
1st May 2025
27AQI
2nd May 2025
28AQI
3rd May 2025
26AQI
4th May 2025
19AQI
5th May 2025
21AQI
6th May 2025
37AQI
7th May 2025
29AQI
8th May 2025
30AQI
9th May 2025
26AQI
10th May 2025
40AQI
11th May 2025
36AQI
12th May 2025
34AQI
13th May 2025
30AQI
14th May 2025
42AQI
15th May 2025
57AQI
16th May 2025
47AQI
17th May 2025
27AQI
18th May 2025
25AQI
19th May 2025
34AQI
20th May 2025
29AQI
21st May 2025
20AQI
22nd May 2025
17AQI
23rd May 2025
22AQI
24th May 2025
35AQI
25th May 2025
36AQI
26th May 2025
22AQI
27th May 2025
26AQI
28th May 2025
27AQI
29th May 2025
48AQI
30th May 2025
31AQI
31st May 2025
43AQI
1st June 2025
44AQI
2nd June 2025
50AQI
3rd June 2025
61AQI
4th June 2025
50AQI
5th June 2025
46AQI
6th June 2025
54AQI
7th June 2025
79AQI
8th June 2025
57AQI
9th June 2025
60AQI
10th June 2025
64AQI
11th June 2025
78AQI
12th June 2025
80AQI
13th June 2025
49AQI
14th June 2025
39AQI
15th June 2025
50AQI
16th June 2025
37AQI
17th June 2025
39AQI
18th June 2025
35AQI
19th June 2025
24AQI
20th June 2025
41AQI
21st June 2025
52AQI
22nd June 2025
54AQI
23rd June 2025
59AQI
24th June 2025
55AQI
25th June 2025
53AQI
26th June 2025
53AQI
27th June 2025
40AQI
28th June 2025
29AQI
29th June 2025
26AQI
30th June 2025
31AQI
1st July 2025
29AQI
2nd July 2025
48AQI
3rd July 2025
55AQI
4th July 2025
65AQI
5th July 2025
88AQI
6th July 2025
64AQI
7th July 2025
39AQI
8th July 2025
56AQI
9th July 2025
40AQI
10th July 2025
44AQI
11th July 2025
46AQI
12th July 2025
36AQI
13th July 2025
36AQI
14th July 2025
32AQI
15th July 2025
41AQI
16th July 2025
37AQI
17th July 2025
34AQI
18th July 2025
32AQI
19th July 2025
51AQI
20th July 2025
53AQI
21st July 2025
31AQI
22nd July 2025
45AQI
23rd July 2025
55AQI
24th July 2025
57AQI
25th July 2025
48AQI
26th July 2025
50AQI
27th July 2025
29AQI
28th July 2025
37AQI
29th July 2025
52AQI
30th July 2025
51AQI
31st July 2025
45AQI
1st August 2025
107AQI
2nd August 2025
77AQI
3rd August 2025
44AQI
4th August 2025
40AQI
5th August 2025
34AQI
6th August 2025
53AQI
7th August 2025
54AQI
8th August 2025
55AQI
9th August 2025
52AQI
10th August 2025
49AQI
11th August 2025
45AQI
12th August 2025
48AQI
13th August 2025
45AQI
14th August 2025
62AQI
15th August 2025
58AQI
16th August 2025
57AQI
17th August 2025
58AQI
18th August 2025
60AQI
19th August 2025
54AQI
20th August 2025
27AQI
21st August 2025
23AQI
22nd August 2025
33AQI
23rd August 2025
42AQI
24th August 2025
27AQI
25th August 2025
28AQI
26th August 2025
32AQI
27th August 2025
40AQI
28th August 2025
42AQI
29th August 2025
49AQI
30th August 2025
40AQI
31st August 2025
31AQI
1st September 2025
29AQI
2nd September 2025
32AQI
3rd September 2025
45AQI
4th September 2025
60AQI
5th September 2025
53AQI
6th September 2025
30AQI
7th September 2025
28AQI
8th September 2025
34AQI
9th September 2025
48AQI
10th September 2025
54AQI
11th September 2025
63AQI
12th September 2025
62AQI
13th September 2025
60AQI
14th September 2025
58AQI
15th September 2025
58AQI
16th September 2025
60AQI
17th September 2025
57AQI
18th September 2025
66AQI
19th September 2025
49AQI
20th September 2025
53AQI
21st September 2025
49AQI
22nd September 2025
38AQI
23rd September 2025
47AQI
24th September 2025
32AQI
25th September 2025
29AQI
26th September 2025
36AQI
27th September 2025
38AQI
28th September 2025
43AQI
29th September 2025
56AQI
30th September 2025
59AQI
1st October 2025
64AQI
2nd October 2025
68AQI
3rd October 2025
64AQI
4th October 2025
59AQI
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

30AQI

32AQI

40AQI

36AQI

31AQI

50AQI

46AQI

47AQI

48AQI

64AQI

No. of days

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

202540AQI

29
2
27
1
25
5
1
28
2
30
1
16
14
20
11
19
11
1
16
14
4
210
65
2

Highest AQI recorded in

October

64AQI

Lowest AQI recorded in

January

30AQI

202438AQI

28
3
19
10
27
4
27
3
29
2
26
4
19
12
21
10
27
3
21
10
30
29
2
303
63

Highest AQI recorded in

July

47AQI

Lowest AQI recorded in

November

26AQI

202346AQI

20
11
24
4
22
9
25
5
19
12
3
25
2
21
10
19
12
17
13
21
10
21
8
28
3
240
122
2

Highest AQI recorded in

June

68AQI

Lowest AQI recorded in

December

33AQI

202242AQI

25
6
18
4
25
6
28
2
26
5
20
10
11
12
2
2
26
4
25
6
18
12
19
12
243
81

Highest AQI recorded in

July

49AQI

Lowest AQI recorded in

April

36AQI

202144AQI

25
5
22
6
27
4
27
3
28
3
14
16
15
16
17
14
28
2
26
5
18
10
17
14
264
98

Highest AQI recorded in

July

56AQI

Lowest AQI recorded in

May

35AQI

202039AQI

9
20
17
1
25
5
22
9
23
8
25
4
28
3
12
18
6
199
36

Highest AQI recorded in

December

43AQI

Lowest AQI recorded in

November

31AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
46AQI
Least Polluted Year Recorded
2024(Avg.)
38AQI

East St Louis's annual 2025 AQI (40) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (39), 2021 (44), 2022 (42), 2023 (46), 2024 (38).