Chi Com, Evergreen Park, 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
Chi Com, Evergreen Park, Illinois, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
6th Aug 2025
90AQILowest AQI recorded on
25th Aug 2025
19AQISame Day Analysis (16th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 30 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Chi Com, Evergreen Park, Illinois, United States
AQI
Day
Night
.
5 AM15th Aug 2026
8 PM
4 AM16th Aug 2026
Day time
Avg. Highest Time
7AM15th Aug
50AQI
Avg. Lowest Time
7PM15th Aug
23AQI
Night time
Avg. Highest Time
11PM15th Aug
36AQI
Avg. Lowest Time
2AM16th Aug
23AQI
In the last 24 hours,
Chi Com's AQI reached its highest point of 50 at 7 AM during the Day, while the lowest point, 23, was recorded at 2 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Chi Com, Evergreen Park, Illinois, United States
JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026505 AMAQI
18th Jul 2026466 AMAQI
18th Jul 2026487 AMAQI
18th Jul 2026488 AMAQI
18th Jul 2026489 AMAQI
18th Jul 20264810 AMAQI
18th Jul 20264611 AMAQI
18th Jul 20264412 PMAQI
18th Jul 2026461 PMAQI
18th Jul 2026462 PMAQI
18th Jul 2026443 PMAQI
18th Jul 2026484 PMAQI
18th Jul 2026465 PMAQI
18th Jul 2026486 PMAQI
18th Jul 2026717 PMAQI
18th Jul 2026948 PMAQI
18th Jul 20261229 PMAQI
18th Jul 202615010 PMAQI
18th Jul 202615211 PMAQI
19th Jul 202615812 AMAQI
19th Jul 20261591 AMAQI
19th Jul 20261522 AMAQI
19th Jul 20261683 AMAQI
19th Jul 20261544 AMAQI
27°C23/35°C
19th Jul 20261345 AMAQI
19th Jul 20261286 AMAQI
19th Jul 20261297 AMAQI
19th Jul 20261168 AMAQI
19th Jul 20261189 AMAQI
19th Jul 202610810 AMAQI
19th Jul 202611511 AMAQI
19th Jul 202611012 PMAQI
19th Jul 20261011 PMAQI
19th Jul 20261042 PMAQI
19th Jul 20261123 PMAQI
19th Jul 20261064 PMAQI
19th Jul 20261025 PMAQI
19th Jul 20261066 PMAQI
19th Jul 20261087 PMAQI
19th Jul 20261228 PMAQI
19th Jul 20261169 PMAQI
19th Jul 202610610 PMAQI
19th Jul 202610811 PMAQI
20th Jul 202610412 AMAQI
20th Jul 20261051 AMAQI
20th Jul 20261142 AMAQI
20th Jul 20261343 AMAQI
20th Jul 20261424 AMAQI
23°C20/30°C
20th Jul 20261185 AMAQI
20th Jul 20261116 AMAQI
20th Jul 20261167 AMAQI
20th Jul 20261428 AMAQI
20th Jul 20261159 AMAQI
20th Jul 202612510 AMAQI
20th Jul 202612511 AMAQI
20th Jul 202610812 PMAQI
20th Jul 20261151 PMAQI
20th Jul 20261062 PMAQI
20th Jul 20261103 PMAQI
20th Jul 20261084 PMAQI
20th Jul 20261055 PMAQI
20th Jul 20261186 PMAQI
20th Jul 20261067 PMAQI
20th Jul 20261118 PMAQI
20th Jul 20261169 PMAQI
20th Jul 202611511 PMAQI
21st Jul 202611112 AMAQI
21st Jul 20261001 AMAQI
21st Jul 2026952 AMAQI
21st Jul 2026883 AMAQI
21st Jul 2026764 AMAQI
24°C18/32°C
21st Jul 2026645 AMAQI
21st Jul 2026566 AMAQI
21st Jul 2026507 AMAQI
21st Jul 2026448 AMAQI
21st Jul 2026349 AMAQI
21st Jul 20262910 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20265112 PMAQI
21st Jul 2026551 PMAQI
21st Jul 2026562 PMAQI
21st Jul 2026573 PMAQI
21st Jul 2026534 PMAQI
21st Jul 2026485 PMAQI
21st Jul 2026506 PMAQI
21st Jul 2026447 PMAQI
21st Jul 2026468 PMAQI
21st Jul 2026319 PMAQI
21st Jul 20264210 PMAQI
21st Jul 20264211 PMAQI
22nd Jul 20263812 AMAQI
22nd Jul 2026461 AMAQI
22nd Jul 2026462 AMAQI
22nd Jul 2026363 AMAQI
22nd Jul 2026304 AMAQI
26°C20/34°C
22nd Jul 2026485 AMAQI
22nd Jul 2026386 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026258 AMAQI
22nd Jul 2026279 AMAQI
22nd Jul 20262210 AMAQI
22nd Jul 20261311 AMAQI
22nd Jul 20262212 PMAQI
22nd Jul 2026141 PMAQI
22nd Jul 2026192 PMAQI
22nd Jul 2026163 PMAQI
22nd Jul 2026234 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026286 PMAQI
22nd Jul 2026317 PMAQI
22nd Jul 2026318 PMAQI
22nd Jul 2026589 PMAQI
22nd Jul 20264610 PMAQI
22nd Jul 20263311 PMAQI
23rd Jul 20263812 AMAQI
23rd Jul 2026291 AMAQI
23rd Jul 2026462 AMAQI
23rd Jul 2026403 AMAQI
23rd Jul 2026304 AMAQI
20°C15/26°C
23rd Jul 2026445 AMAQI
23rd Jul 2026486 AMAQI
23rd Jul 2026487 AMAQI
23rd Jul 2026448 AMAQI
23rd Jul 2026469 AMAQI
23rd Jul 20264810 AMAQI
23rd Jul 20264211 AMAQI
23rd Jul 20262212 PMAQI
23rd Jul 2026581 PMAQI
23rd Jul 2026462 PMAQI
23rd Jul 2026403 PMAQI
23rd Jul 2026444 PMAQI
23rd Jul 2026465 PMAQI
23rd Jul 2026426 PMAQI
23rd Jul 2026387 PMAQI
23rd Jul 2026428 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20263811 PMAQI
24th Jul 20264812 AMAQI
24th Jul 2026521 AMAQI
24th Jul 2026462 AMAQI
24th Jul 2026483 AMAQI
24th Jul 2026484 AMAQI
20°C14/26°C
24th Jul 2026485 AMAQI
24th Jul 2026466 AMAQI
24th Jul 2026447 AMAQI
24th Jul 2026448 AMAQI
24th Jul 2026489 AMAQI
24th Jul 20264410 AMAQI
24th Jul 20264411 AMAQI
24th Jul 20264612 PMAQI
24th Jul 2026461 PMAQI
24th Jul 2026462 PMAQI
24th Jul 2026293 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026365 PMAQI
24th Jul 2026366 PMAQI
24th Jul 2026327 PMAQI
24th Jul 2026278 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20263310 PMAQI
24th Jul 20263211 PMAQI
25th Jul 20265712 AMAQI
25th Jul 2026511 AMAQI
25th Jul 2026502 AMAQI
25th Jul 2026493 AMAQI
25th Jul 2026424 AMAQI
22°C15/28°C
25th Jul 2026465 AMAQI
25th Jul 2026426 AMAQI
25th Jul 2026467 AMAQI
25th Jul 2026508 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20264610 AMAQI
25th Jul 20262311 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026381 PMAQI
25th Jul 2026422 PMAQI
25th Jul 2026423 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026525 PMAQI
25th Jul 2026466 PMAQI
25th Jul 2026487 PMAQI
25th Jul 2026488 PMAQI
25th Jul 2026469 PMAQI
25th Jul 20264610 PMAQI
25th Jul 20264411 PMAQI
26th Jul 20265012 AMAQI
26th Jul 2026481 AMAQI
26th Jul 2026442 AMAQI
26th Jul 2026443 AMAQI
26th Jul 2026464 AMAQI
22°C17/31°C
26th Jul 2026505 AMAQI
26th Jul 2026466 AMAQI
26th Jul 2026467 AMAQI
26th Jul 2026468 AMAQI
26th Jul 2026449 AMAQI
26th Jul 20264610 AMAQI
26th Jul 20264811 AMAQI
26th Jul 20264612 PMAQI
26th Jul 2026501 PMAQI
26th Jul 2026542 PMAQI
26th Jul 2026553 PMAQI
26th Jul 2026564 PMAQI
26th Jul 2026565 PMAQI
26th Jul 2026586 PMAQI
26th Jul 2026577 PMAQI
26th Jul 2026568 PMAQI
26th Jul 2026559 PMAQI
26th Jul 20265410 PMAQI
26th Jul 20265311 PMAQI
27th Jul 20265112 AMAQI
27th Jul 2026511 AMAQI
27th Jul 2026502 AMAQI
27th Jul 2026503 AMAQI
27th Jul 2026524 AMAQI
27°C22/36°C
27th Jul 2026535 AMAQI
27th Jul 2026556 AMAQI
27th Jul 2026587 AMAQI
27th Jul 2026648 AMAQI
27th Jul 2026649 AMAQI
27th Jul 20265910 AMAQI
27th Jul 20265911 AMAQI
27th Jul 20265512 PMAQI
27th Jul 2026581 PMAQI
27th Jul 2026562 PMAQI
27th Jul 2026513 PMAQI
27th Jul 2026504 PMAQI
27th Jul 2026465 PMAQI
27th Jul 2026386 PMAQI
27th Jul 2026337 PMAQI
27th Jul 2026428 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20263410 PMAQI
27th Jul 20265011 PMAQI
28th Jul 20264412 AMAQI
28th Jul 2026481 AMAQI
28th Jul 2026482 AMAQI
28th Jul 2026463 AMAQI
28th Jul 2026424 AMAQI
26°C23/35°C
28th Jul 2026445 AMAQI
28th Jul 2026446 AMAQI
28th Jul 2026447 AMAQI
28th Jul 2026428 AMAQI
28th Jul 2026429 AMAQI
28th Jul 20264410 AMAQI
28th Jul 20264611 AMAQI
28th Jul 20265112 PMAQI
28th Jul 2026541 PMAQI
28th Jul 2026512 PMAQI
28th Jul 2026533 PMAQI
28th Jul 2026514 PMAQI
28th Jul 2026505 PMAQI
28th Jul 2026466 PMAQI
28th Jul 2026467 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20263610 PMAQI
28th Jul 20263311 PMAQI
29th Jul 20264612 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026363 AMAQI
29th Jul 2026304 AMAQI
22°C18/26°C
29th Jul 2026365 AMAQI
29th Jul 2026386 AMAQI
29th Jul 2026447 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026279 AMAQI
29th Jul 20263210 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20262712 PMAQI
29th Jul 2026291 PMAQI
29th Jul 2026402 PMAQI
29th Jul 2026363 PMAQI
29th Jul 2026344 PMAQI
29th Jul 2026265 PMAQI
29th Jul 2026426 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026429 PMAQI
29th Jul 20264510 PMAQI
29th Jul 20263011 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026292 AMAQI
30th Jul 2026473 AMAQI
30th Jul 2026464 AMAQI
22°C17/28°C
30th Jul 2026445 AMAQI
30th Jul 2026296 AMAQI
30th Jul 2026347 AMAQI
30th Jul 2026468 AMAQI
30th Jul 2026469 AMAQI
30th Jul 20264610 AMAQI
30th Jul 20264411 AMAQI
30th Jul 20264412 PMAQI
30th Jul 2026401 PMAQI
30th Jul 2026402 PMAQI
30th Jul 2026383 PMAQI
30th Jul 2026404 PMAQI
30th Jul 2026425 PMAQI
30th Jul 2026426 PMAQI
30th Jul 2026447 PMAQI
30th Jul 2026468 PMAQI
30th Jul 2026469 PMAQI
30th Jul 20264410 PMAQI
30th Jul 20264811 PMAQI
31st Jul 20265212 AMAQI
31st Jul 2026461 AMAQI
31st Jul 2026502 AMAQI
31st Jul 2026483 AMAQI
31st Jul 2026484 AMAQI
25°C16/34°C
31st Jul 2026485 AMAQI
31st Jul 2026506 AMAQI
31st Jul 2026507 AMAQI
31st Jul 2026508 AMAQI
31st Jul 2026489 AMAQI
31st Jul 20264410 AMAQI
31st Jul 20264611 AMAQI
31st Jul 20264812 PMAQI
31st Jul 2026441 PMAQI
31st Jul 2026442 PMAQI
31st Jul 2026443 PMAQI
31st Jul 2026444 PMAQI
31st Jul 2026445 PMAQI
31st Jul 2026406 PMAQI
31st Jul 2026317 PMAQI
31st Jul 2026348 PMAQI
31st Jul 2026239 PMAQI
31st Jul 20263810 PMAQI
31st Jul 20262111 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026381 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026403 AMAQI
1st Aug 2026424 AMAQI
24°C19/32°C
1st Aug 2026425 AMAQI
1st Aug 2026426 AMAQI
1st Aug 2026467 AMAQI
1st Aug 2026448 AMAQI
1st Aug 2026449 AMAQI
1st Aug 20264410 AMAQI
1st Aug 20264211 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026481 PMAQI
1st Aug 2026502 PMAQI
1st Aug 2026483 PMAQI
1st Aug 2026514 PMAQI
1st Aug 2026465 PMAQI
1st Aug 2026506 PMAQI
1st Aug 2026467 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026429 PMAQI
1st Aug 20264610 PMAQI
1st Aug 20264611 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026501 AMAQI
2nd Aug 2026482 AMAQI
2nd Aug 2026443 AMAQI
2nd Aug 2026444 AMAQI
21°C20/23°C
2nd Aug 2026465 AMAQI
2nd Aug 2026486 AMAQI
2nd Aug 2026447 AMAQI
2nd Aug 2026508 AMAQI
2nd Aug 2026449 AMAQI
2nd Aug 20264610 AMAQI
2nd Aug 20264611 AMAQI
2nd Aug 20264812 PMAQI
2nd Aug 2026481 PMAQI
2nd Aug 2026462 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026484 PMAQI
2nd Aug 2026485 PMAQI
2nd Aug 2026466 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026428 PMAQI
2nd Aug 2026489 PMAQI
2nd Aug 20264810 PMAQI
2nd Aug 20264811 PMAQI
3rd Aug 20264612 AMAQI
3rd Aug 2026421 AMAQI
3rd Aug 2026252 AMAQI
3rd Aug 2026213 AMAQI
3rd Aug 2026304 AMAQI
21°C19/26°C
3rd Aug 2026345 AMAQI
3rd Aug 2026406 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026348 AMAQI
3rd Aug 2026369 AMAQI
3rd Aug 20264410 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20264412 PMAQI
3rd Aug 2026421 PMAQI
3rd Aug 2026422 PMAQI
3rd Aug 2026443 PMAQI
3rd Aug 2026504 PMAQI
3rd Aug 2026485 PMAQI
3rd Aug 2026426 PMAQI
3rd Aug 2026447 PMAQI
3rd Aug 2026468 PMAQI
3rd Aug 2026489 PMAQI
3rd Aug 20264610 PMAQI
3rd Aug 20264811 PMAQI
4th Aug 20265212 AMAQI
4th Aug 2026501 AMAQI
4th Aug 2026512 AMAQI
4th Aug 2026503 AMAQI
4th Aug 2026514 AMAQI
22°C18/29°C
4th Aug 2026495 AMAQI
4th Aug 2026466 AMAQI
4th Aug 2026427 AMAQI
4th Aug 2026468 AMAQI
4th Aug 2026469 AMAQI
4th Aug 20264610 AMAQI
4th Aug 20264611 AMAQI
4th Aug 20264612 PMAQI
4th Aug 2026441 PMAQI
4th Aug 2026462 PMAQI
4th Aug 2026483 PMAQI
4th Aug 2026464 PMAQI
4th Aug 2026485 PMAQI
4th Aug 2026446 PMAQI
4th Aug 2026467 PMAQI
4th Aug 2026468 PMAQI
4th Aug 2026489 PMAQI
4th Aug 20264810 PMAQI
4th Aug 20264611 PMAQI
5th Aug 20264812 AMAQI
5th Aug 2026481 AMAQI
5th Aug 2026482 AMAQI
5th Aug 2026503 AMAQI
5th Aug 2026464 AMAQI
25°C18/33°C
5th Aug 2026485 AMAQI
5th Aug 2026466 AMAQI
5th Aug 2026467 AMAQI
5th Aug 2026488 AMAQI
5th Aug 2026549 AMAQI
5th Aug 20265510 AMAQI
5th Aug 20265511 AMAQI
5th Aug 20264912 PMAQI
5th Aug 2026481 PMAQI
5th Aug 2026482 PMAQI
5th Aug 2026513 PMAQI
5th Aug 2026524 PMAQI
5th Aug 2026495 PMAQI
5th Aug 2026536 PMAQI
5th Aug 2026487 PMAQI
5th Aug 2026448 PMAQI
5th Aug 2026489 PMAQI
5th Aug 20264410 PMAQI
5th Aug 20264211 PMAQI
6th Aug 20264412 AMAQI
6th Aug 2026441 AMAQI
6th Aug 2026422 AMAQI
6th Aug 2026423 AMAQI
6th Aug 2026444 AMAQI
24°C21/31°C
6th Aug 2026445 AMAQI
6th Aug 2026466 AMAQI
6th Aug 2026447 AMAQI
6th Aug 2026518 AMAQI
6th Aug 2026519 AMAQI
6th Aug 20265610 AMAQI
6th Aug 20265611 AMAQI
6th Aug 20266012 PMAQI
6th Aug 2026581 PMAQI
6th Aug 2026542 PMAQI
6th Aug 2026553 PMAQI
6th Aug 2026554 PMAQI
6th Aug 2026515 PMAQI
6th Aug 2026516 PMAQI
6th Aug 2026497 PMAQI
6th Aug 2026528 PMAQI
6th Aug 2026509 PMAQI
6th Aug 20264910 PMAQI
6th Aug 20264811 PMAQI
7th Aug 20265312 AMAQI
7th Aug 2026491 AMAQI
7th Aug 2026522 AMAQI
7th Aug 2026503 AMAQI
7th Aug 2026504 AMAQI
23°C19/26°C
7th Aug 2026485 AMAQI
7th Aug 2026466 AMAQI
7th Aug 2026427 AMAQI
7th Aug 2026448 AMAQI
7th Aug 2026449 AMAQI
7th Aug 20264810 AMAQI
7th Aug 20264411 AMAQI
7th Aug 20264812 PMAQI
7th Aug 2026441 PMAQI
7th Aug 2026422 PMAQI
7th Aug 2026423 PMAQI
7th Aug 2026404 PMAQI
7th Aug 2026445 PMAQI
7th Aug 2026466 PMAQI
7th Aug 2026447 PMAQI
7th Aug 2026408 PMAQI
7th Aug 2026429 PMAQI
7th Aug 20264610 PMAQI
7th Aug 20264011 PMAQI
8th Aug 20264212 AMAQI
8th Aug 2026461 AMAQI
8th Aug 2026442 AMAQI
8th Aug 2026423 AMAQI
8th Aug 2026464 AMAQI
25°C20/31°C
8th Aug 2026485 AMAQI
8th Aug 2026486 AMAQI
8th Aug 2026487 AMAQI
8th Aug 2026488 AMAQI
8th Aug 2026489 AMAQI
8th Aug 20264810 AMAQI
8th Aug 20264811 AMAQI
8th Aug 20265012 PMAQI
8th Aug 2026461 PMAQI
8th Aug 2026482 PMAQI
8th Aug 2026463 PMAQI
8th Aug 2026464 PMAQI
8th Aug 2026425 PMAQI
8th Aug 2026426 PMAQI
8th Aug 2026487 PMAQI
8th Aug 2026468 PMAQI
8th Aug 2026449 PMAQI
8th Aug 20264610 PMAQI
8th Aug 20265011 PMAQI
9th Aug 20265012 AMAQI
9th Aug 2026461 AMAQI
9th Aug 2026482 AMAQI
9th Aug 2026503 AMAQI
9th Aug 2026524 AMAQI
26°C21/34°C
9th Aug 2026485 AMAQI
9th Aug 2026496 AMAQI
9th Aug 2026467 AMAQI
9th Aug 2026488 AMAQI
9th Aug 2026469 AMAQI
9th Aug 20264210 AMAQI
9th Aug 20264011 AMAQI
9th Aug 20263812 PMAQI
9th Aug 2026421 PMAQI
9th Aug 2026442 PMAQI
9th Aug 2026483 PMAQI
9th Aug 2026484 PMAQI
9th Aug 2026465 PMAQI
9th Aug 2026446 PMAQI
9th Aug 2026427 PMAQI
9th Aug 2026468 PMAQI
9th Aug 2026409 PMAQI
9th Aug 20264410 PMAQI
9th Aug 20264411 PMAQI
10th Aug 20264612 AMAQI
10th Aug 2026441 AMAQI
10th Aug 2026442 AMAQI
10th Aug 2026463 AMAQI
10th Aug 2026524 AMAQI
24°C18/33°C
10th Aug 2026625 AMAQI
10th Aug 2026646 AMAQI
10th Aug 2026647 AMAQI
10th Aug 2026638 AMAQI
10th Aug 2026599 AMAQI
10th Aug 20266010 AMAQI
10th Aug 20265611 AMAQI
10th Aug 20265612 PMAQI
10th Aug 2026571 PMAQI
10th Aug 2026602 PMAQI
10th Aug 2026583 PMAQI
10th Aug 2026584 PMAQI
10th Aug 2026565 PMAQI
10th Aug 2026566 PMAQI
10th Aug 2026587 PMAQI
10th Aug 2026598 PMAQI
10th Aug 2026589 PMAQI
10th Aug 20265710 PMAQI
10th Aug 20265111 PMAQI
11th Aug 20265012 AMAQI
11th Aug 2026501 AMAQI
11th Aug 2026482 AMAQI
11th Aug 2026513 AMAQI
11th Aug 2026504 AMAQI
25°C22/33°C
11th Aug 2026525 AMAQI
11th Aug 2026516 AMAQI
11th Aug 2026517 AMAQI
11th Aug 2026488 AMAQI
11th Aug 2026529 AMAQI
11th Aug 20265910 AMAQI
11th Aug 20266411 AMAQI
11th Aug 20266212 PMAQI
11th Aug 2026511 PMAQI
11th Aug 2026512 PMAQI
11th Aug 2026463 PMAQI
11th Aug 2026444 PMAQI
11th Aug 2026465 PMAQI
11th Aug 2026406 PMAQI
11th Aug 2026447 PMAQI
11th Aug 2026428 PMAQI
11th Aug 2026429 PMAQI
11th Aug 20264410 PMAQI
11th Aug 20264611 PMAQI
12th Aug 20264612 AMAQI
12th Aug 2026461 AMAQI
12th Aug 2026442 AMAQI
12th Aug 2026443 AMAQI
12th Aug 2026444 AMAQI
25°C23/30°C
12th Aug 2026445 AMAQI
12th Aug 2026466 AMAQI
12th Aug 2026467 AMAQI
12th Aug 2026448 AMAQI
12th Aug 2026449 AMAQI
12th Aug 20264410 AMAQI
12th Aug 20264611 AMAQI
12th Aug 20264612 PMAQI
12th Aug 2026311 PMAQI
12th Aug 2026382 PMAQI
12th Aug 2026323 PMAQI
12th Aug 2026384 PMAQI
12th Aug 2026275 PMAQI
12th Aug 2026276 PMAQI
12th Aug 2026337 PMAQI
12th Aug 2026448 PMAQI
12th Aug 2026469 PMAQI
12th Aug 20265110 PMAQI
12th Aug 20265311 PMAQI
13th Aug 20264912 AMAQI
13th Aug 2026481 AMAQI
13th Aug 2026502 AMAQI
13th Aug 2026493 AMAQI
13th Aug 2026464 AMAQI
24°C21/29°C
13th Aug 2026485 AMAQI
13th Aug 2026486 AMAQI
13th Aug 2026467 AMAQI
13th Aug 2026518 AMAQI
13th Aug 2026519 AMAQI
13th Aug 20265110 AMAQI
13th Aug 20265311 AMAQI
13th Aug 20265612 PMAQI
13th Aug 2026601 PMAQI
13th Aug 2026632 PMAQI
13th Aug 2026643 PMAQI
13th Aug 2026664 PMAQI
13th Aug 2026675 PMAQI
13th Aug 2026646 PMAQI
13th Aug 2026607 PMAQI
13th Aug 2026598 PMAQI
13th Aug 2026659 PMAQI
13th Aug 20267010 PMAQI
13th Aug 20267211 PMAQI
14th Aug 20267212 AMAQI
14th Aug 2026661 AMAQI
14th Aug 2026672 AMAQI
14th Aug 2026693 AMAQI
14th Aug 2026654 AMAQI
23°C19/27°C
14th Aug 2026595 AMAQI
14th Aug 2026586 AMAQI
14th Aug 2026627 AMAQI
14th Aug 2026588 AMAQI
14th Aug 2026569 AMAQI
14th Aug 20265710 AMAQI
14th Aug 20265811 AMAQI
14th Aug 20265712 PMAQI
14th Aug 2026541 PMAQI
14th Aug 2026562 PMAQI
14th Aug 2026563 PMAQI
14th Aug 2026554 PMAQI
14th Aug 2026555 PMAQI
14th Aug 2026526 PMAQI
14th Aug 2026537 PMAQI
14th Aug 2026548 PMAQI
14th Aug 2026549 PMAQI
14th Aug 20265310 PMAQI
14th Aug 20265211 PMAQI
15th Aug 20265112 AMAQI
15th Aug 2026531 AMAQI
15th Aug 2026512 AMAQI
15th Aug 2026443 AMAQI
15th Aug 2026514 AMAQI
23°C21/28°C
15th Aug 2026465 AMAQI
15th Aug 2026446 AMAQI
15th Aug 2026507 AMAQI
15th Aug 2026488 AMAQI
15th Aug 2026469 AMAQI
15th Aug 20264410 AMAQI
15th Aug 20262911 AMAQI
15th Aug 20262912 PMAQI
15th Aug 2026331 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026383 PMAQI
15th Aug 2026424 PMAQI
15th Aug 2026295 PMAQI
15th Aug 2026276 PMAQI
15th Aug 2026237 PMAQI
15th Aug 2026258 PMAQI
15th Aug 2026259 PMAQI
15th Aug 20263210 PMAQI
15th Aug 20263611 PMAQI
16th Aug 20262512 AMAQI
16th Aug 2026251 AMAQI
16th Aug 2026232 AMAQI
16th Aug 2026253 AMAQI
16th Aug 2026364 AMAQI
24°C22/27°C
16th Aug 2026385 AMAQI
5 AM16th Aug 2026256 AMAQI
16th Aug 2026257 AMAQI
16th Aug 2026258 AMAQI
16th Aug 2026279 AMAQI
16th Aug 20264210 AMAQI
16th Aug 20264211 AMAQI
16th Aug 20264012 PMAQI
12 PM16th Aug 2026341 PMAQI
16th Aug 2026272 PMAQI
16th Aug 2026323 PMAQI
16th Aug 2026294 PMAQI
16th Aug 2026255 PMAQI
16th Aug 2026256 PMAQI
16th Aug 2026237 PMAQI
16th Aug 2026278 PMAQI
8 PM16th Aug 2026259 PMAQI
16th Aug 20264210 PMAQI
16th Aug 20263211 PMAQI
12 AM
4 AM
25°C22/31°C
Day time
Avg. Highest Time
5 AM
53AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
5 PM - 7 PM
48AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 53), while the lowest AQI was between 5 PM to 7 PM (Avg. 48).
Night time
Avg. Highest Time
12 AM - 4 AM
53AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
9 PM - 11 PM
51AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 53), while the lowest AQI was between 9 PM to 11 PM (Avg. 51).
2026 Days Vs Air Quality
Chi Com, Evergreen Park, Illinois, United States
2026
90%
203
8%
18
1%
3
0.4%
1
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Good
203 DaysModerate
18 DaysPoor
3 DaysUnhealthy
1 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 228 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
Chi Com, Evergreen Park, 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
20AQI (US)
20AQI (US)
2nd January 2026
30AQI (US)
30AQI (US)
3rd January 2026
33AQI (US)
33AQI (US)
4th January 2026
34AQI (US)
34AQI (US)
5th January 2026
49AQI (US)
49AQI (US)
6th January 2026
71AQI (US)
71AQI (US)
7th January 2026
53AQI (US)
53AQI (US)
8th January 2026
46AQI (US)
46AQI (US)
9th January 2026
23AQI (US)
23AQI (US)
10th January 2026
29AQI (US)
29AQI (US)
11th January 2026
23AQI (US)
23AQI (US)
12th January 2026
21AQI (US)
21AQI (US)
13th January 2026
26AQI (US)
26AQI (US)
14th January 2026
13AQI (US)
13AQI (US)
15th January 2026
15AQI (US)
15AQI (US)
16th January 2026
22AQI (US)
22AQI (US)
17th January 2026
18AQI (US)
18AQI (US)
18th January 2026
19AQI (US)
19AQI (US)
19th January 2026
20AQI (US)
20AQI (US)
20th January 2026
21AQI (US)
21AQI (US)
21st January 2026
37AQI (US)
37AQI (US)
22nd January 2026
59AQI (US)
59AQI (US)
23rd January 2026
58AQI (US)
58AQI (US)
24th January 2026
48AQI (US)
48AQI (US)
25th January 2026
49AQI (US)
49AQI (US)
26th January 2026
46AQI (US)
46AQI (US)
27th January 2026
36AQI (US)
36AQI (US)
28th January 2026
42AQI (US)
42AQI (US)
29th January 2026
50AQI (US)
50AQI (US)
30th January 2026
58AQI (US)
58AQI (US)
31st January 2026
42AQI (US)
42AQI (US)
1st February 2026
45AQI (US)
45AQI (US)
2nd February 2026
51AQI (US)
51AQI (US)
3rd February 2026
47AQI (US)
47AQI (US)
4th February 2026
44AQI (US)
44AQI (US)
5th February 2026
51AQI (US)
51AQI (US)
6th February 2026
46AQI (US)
46AQI (US)
7th February 2026
39AQI (US)
39AQI (US)
8th February 2026
41AQI (US)
41AQI (US)
9th February 2026
48AQI (US)
48AQI (US)
10th February 2026
47AQI (US)
47AQI (US)
11th February 2026
39AQI (US)
39AQI (US)
12th February 2026
39AQI (US)
39AQI (US)
13th February 2026
50AQI (US)
50AQI (US)
14th February 2026
49AQI (US)
49AQI (US)
15th February 2026
46AQI (US)
46AQI (US)
16th February 2026
45AQI (US)
45AQI (US)
17th February 2026
48AQI (US)
48AQI (US)
18th February 2026
44AQI (US)
44AQI (US)
19th February 2026
42AQI (US)
42AQI (US)
20th February 2026
37AQI (US)
37AQI (US)
21st February 2026
35AQI (US)
35AQI (US)
22nd February 2026
36AQI (US)
36AQI (US)
23rd February 2026
38AQI (US)
38AQI (US)
24th February 2026
45AQI (US)
45AQI (US)
25th February 2026
43AQI (US)
43AQI (US)
26th February 2026
34AQI (US)
34AQI (US)
27th February 2026
34AQI (US)
34AQI (US)
28th February 2026
33AQI (US)
33AQI (US)
1st March 2026
39AQI (US)
39AQI (US)
2nd March 2026
56AQI (US)
56AQI (US)
3rd March 2026
43AQI (US)
43AQI (US)
4th March 2026
46AQI (US)
46AQI (US)
5th March 2026
46AQI (US)
46AQI (US)
6th March 2026
40AQI (US)
40AQI (US)
7th March 2026
36AQI (US)
36AQI (US)
8th March 2026
40AQI (US)
40AQI (US)
9th March 2026
36AQI (US)
36AQI (US)
10th March 2026
35AQI (US)
35AQI (US)
11th March 2026
41AQI (US)
41AQI (US)
12th March 2026
38AQI (US)
38AQI (US)
13th March 2026
40AQI (US)
40AQI (US)
14th March 2026
36AQI (US)
36AQI (US)
15th March 2026
31AQI (US)
31AQI (US)
16th March 2026
37AQI (US)
37AQI (US)
17th March 2026
33AQI (US)
33AQI (US)
18th March 2026
30AQI (US)
30AQI (US)
19th March 2026
40AQI (US)
40AQI (US)
20th March 2026
44AQI (US)
44AQI (US)
21st March 2026
40AQI (US)
40AQI (US)
22nd March 2026
34AQI (US)
34AQI (US)
23rd March 2026
40AQI (US)
40AQI (US)
24th March 2026
35AQI (US)
35AQI (US)
25th March 2026
32AQI (US)
32AQI (US)
26th March 2026
32AQI (US)
32AQI (US)
27th March 2026
29AQI (US)
29AQI (US)
28th March 2026
29AQI (US)
29AQI (US)
29th March 2026
30AQI (US)
30AQI (US)
30th March 2026
28AQI (US)
28AQI (US)
31st March 2026
28AQI (US)
28AQI (US)
1st April 2026
29AQI (US)
29AQI (US)
2nd April 2026
29AQI (US)
29AQI (US)
3rd April 2026
27AQI (US)
27AQI (US)
4th April 2026
31AQI (US)
31AQI (US)
5th April 2026
30AQI (US)
30AQI (US)
6th April 2026
31AQI (US)
31AQI (US)
7th April 2026
28AQI (US)
28AQI (US)
8th April 2026
35AQI (US)
35AQI (US)
9th April 2026
30AQI (US)
30AQI (US)
10th April 2026
33AQI (US)
33AQI (US)
11th April 2026
29AQI (US)
29AQI (US)
12th April 2026
29AQI (US)
29AQI (US)
13th April 2026
32AQI (US)
32AQI (US)
14th April 2026
32AQI (US)
32AQI (US)
15th April 2026
33AQI (US)
33AQI (US)
16th April 2026
29AQI (US)
29AQI (US)
17th April 2026
18th April 2026
28AQI (US)
28AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
27AQI (US)
27AQI (US)
21st April 2026
26AQI (US)
26AQI (US)
22nd April 2026
23rd April 2026
25AQI (US)
25AQI (US)
24th April 2026
27AQI (US)
27AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
33AQI (US)
33AQI (US)
27th April 2026
25AQI (US)
25AQI (US)
28th April 2026
25AQI (US)
25AQI (US)
29th April 2026
25AQI (US)
25AQI (US)
30th April 2026
27AQI (US)
27AQI (US)
1st May 2026
24AQI (US)
24AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
23AQI (US)
23AQI (US)
4th May 2026
36AQI (US)
36AQI (US)
5th May 2026
38AQI (US)
38AQI (US)
6th May 2026
27AQI (US)
27AQI (US)
7th May 2026
26AQI (US)
26AQI (US)
8th May 2026
34AQI (US)
34AQI (US)
9th May 2026
10th May 2026
30AQI (US)
30AQI (US)
11th May 2026
28AQI (US)
28AQI (US)
12th May 2026
26AQI (US)
26AQI (US)
13th May 2026
28AQI (US)
28AQI (US)
14th May 2026
24AQI (US)
24AQI (US)
15th May 2026
46AQI (US)
46AQI (US)
16th May 2026
51AQI (US)
51AQI (US)
17th May 2026
57AQI (US)
57AQI (US)
18th May 2026
57AQI (US)
57AQI (US)
19th May 2026
55AQI (US)
55AQI (US)
20th May 2026
50AQI (US)
50AQI (US)
21st May 2026
43AQI (US)
43AQI (US)
22nd May 2026
46AQI (US)
46AQI (US)
23rd May 2026
50AQI (US)
50AQI (US)
24th May 2026
47AQI (US)
47AQI (US)
25th May 2026
45AQI (US)
45AQI (US)
26th May 2026
32AQI (US)
32AQI (US)
27th May 2026
28AQI (US)
28AQI (US)
28th May 2026
15AQI (US)
15AQI (US)
29th May 2026
22AQI (US)
22AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
27AQI (US)
27AQI (US)
1st June 2026
29AQI (US)
29AQI (US)
2nd June 2026
23AQI (US)
23AQI (US)
3rd June 2026
22AQI (US)
22AQI (US)
4th June 2026
25AQI (US)
25AQI (US)
5th June 2026
32AQI (US)
32AQI (US)
6th June 2026
22AQI (US)
22AQI (US)
7th June 2026
25AQI (US)
25AQI (US)
8th June 2026
26AQI (US)
26AQI (US)
9th June 2026
24AQI (US)
24AQI (US)
10th June 2026
23AQI (US)
23AQI (US)
11th June 2026
25AQI (US)
25AQI (US)
12th June 2026
23AQI (US)
23AQI (US)
13th June 2026
23AQI (US)
23AQI (US)
14th June 2026
21AQI (US)
21AQI (US)
15th June 2026
24AQI (US)
24AQI (US)
16th June 2026
25AQI (US)
25AQI (US)
17th June 2026
25AQI (US)
25AQI (US)
18th June 2026
25AQI (US)
25AQI (US)
19th June 2026
22AQI (US)
22AQI (US)
20th June 2026
21AQI (US)
21AQI (US)
21st June 2026
26AQI (US)
26AQI (US)
22nd June 2026
22AQI (US)
22AQI (US)
23rd June 2026
18AQI (US)
18AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
24AQI (US)
24AQI (US)
26th June 2026
25AQI (US)
25AQI (US)
27th June 2026
31AQI (US)
31AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
26AQI (US)
26AQI (US)
30th June 2026
36AQI (US)
36AQI (US)
1st July 2026
32AQI (US)
32AQI (US)
2nd July 2026
25AQI (US)
25AQI (US)
3rd July 2026
24AQI (US)
24AQI (US)
4th July 2026
32AQI (US)
32AQI (US)
5th July 2026
44AQI (US)
44AQI (US)
6th July 2026
38AQI (US)
38AQI (US)
7th July 2026
37AQI (US)
37AQI (US)
8th July 2026
37AQI (US)
37AQI (US)
9th July 2026
28AQI (US)
28AQI (US)
10th July 2026
27AQI (US)
27AQI (US)
11th July 2026
39AQI (US)
39AQI (US)
12th July 2026
41AQI (US)
41AQI (US)
13th July 2026
43AQI (US)
43AQI (US)
14th July 2026
36AQI (US)
36AQI (US)
15th July 2026
50AQI (US)
50AQI (US)
16th July 2026
104AQI (US)
104AQI (US)
17th July 2026
157AQI (US)
157AQI (US)
18th July 2026
61AQI (US)
61AQI (US)
19th July 2026
122AQI (US)
122AQI (US)
20th July 2026
116AQI (US)
116AQI (US)
21st July 2026
57AQI (US)
57AQI (US)
22nd July 2026
31AQI (US)
31AQI (US)
23rd July 2026
40AQI (US)
40AQI (US)
24th July 2026
41AQI (US)
41AQI (US)
25th July 2026
45AQI (US)
45AQI (US)
26th July 2026
50AQI (US)
50AQI (US)
27th July 2026
51AQI (US)
51AQI (US)
28th July 2026
45AQI (US)
45AQI (US)
29th July 2026
34AQI (US)
34AQI (US)
30th July 2026
42AQI (US)
42AQI (US)
31st July 2026
43AQI (US)
43AQI (US)
1st August 2026
43AQI (US)
43AQI (US)
2nd August 2026
46AQI (US)
46AQI (US)
3rd August 2026
41AQI (US)
41AQI (US)
4th August 2026
47AQI (US)
47AQI (US)
5th August 2026
49AQI (US)
49AQI (US)
6th August 2026
50AQI (US)
50AQI (US)
7th August 2026
45AQI (US)
45AQI (US)
8th August 2026
46AQI (US)
46AQI (US)
9th August 2026
45AQI (US)
45AQI (US)
10th August 2026
56AQI (US)
56AQI (US)
11th August 2026
49AQI (US)
49AQI (US)
12th August 2026
42AQI (US)
42AQI (US)
13th August 2026
56AQI (US)
56AQI (US)
14th August 2026
58AQI (US)
58AQI (US)
15th August 2026
38AQI (US)
38AQI (US)
16th August 2026
30AQI (US)
30AQI (US)
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
36AQI (US)
43AQI (US)
37AQI (US)
29AQI (US)
36AQI (US)
25AQI (US)
51AQI (US)
46AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202637AQI (US)
26
5
26
2
30
1
28
26
4
30
24
3
3
1
13
3
203
18
3
1
Highest AQI (US) recorded in
July51AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202538AQI (US)
30
1
27
1
30
1
29
1
31
16
14
17
14
21
10
17
13
25
6
21
9
15
16
279
86
Highest AQI (US) recorded in
June50AQI (US)
Lowest AQI (US) recorded in
May26AQI (US)
202435AQI (US)
28
2
24
5
31
30
31
25
4
24
7
28
3
23
2
30
1
28
2
29
2
331
28
Highest AQI (US) recorded in
July45AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
202340AQI (US)
26
4
28
31
29
1
25
6
7
20
1
2
20
11
18
13
27
3
27
4
27
2
27
3
292
67
1
2
Highest AQI (US) recorded in
June66AQI (US)
Lowest AQI (US) recorded in
February29AQI (US)
202236AQI (US)
27
3
19
2
29
2
23
1
25
6
22
8
13
8
1
28
1
26
5
28
2
27
4
268
42
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
November30AQI (US)
202140AQI (US)
26
3
19
9
27
4
25
5
30
1
24
6
16
15
14
17
30
27
4
25
3
27
2
290
69
Highest AQI (US) recorded in
July53AQI (US)
Lowest AQI (US) recorded in
November32AQI (US)
202038AQI (US)
9
4
5
1
6
12
18
12
22
8
1
27
4
28
1
30
1
22
1
22
7
189
51
1
Highest AQI (US) recorded in
May51AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
40AQI (US)Least Polluted Year Recorded
2024(Avg.)
35AQI (US)Chi Com's annual 2026 AQI (US) (37) shows an average percentage change of -1.9% (improved AQI (US)) compared to previous years: 2020 (38), 2021 (40), 2022 (36), 2023 (40), 2024 (35), 2025 (38).
