Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Oak 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

Oak Park, Illinois, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
6th Aug 2025
94AQI
Lowest AQI recorded on
1st Aug 2024
12AQI

Same Day Analysis (7th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 6th Aug - 7th Aug 2026

Oak Park, Illinois, United States

AQI
Day
Night
.

5 AM6th Aug 2026

8 PM

4 AM7th Aug 2026

Day time
Avg. Highest Time
12PM6th Aug

63AQI

Avg. Lowest Time
6AM6th Aug

46AQI

Night time
Avg. Highest Time
12AM7th Aug

53AQI

Avg. Lowest Time
9PM6th Aug

48AQI

In the last 24 hours,

Oak Park's AQI reached its highest point of 63 at 12 PM during the Day, while the lowest point, 46, was recorded at 6 AM during the Day between 6th Aug and 7th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Oak Park, Illinois, United States

JulAug
09th - 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 - 06th06th - 07th07th
Day
Night
9th Jul 2026175 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026397 AMAQI
9th Jul 2026278 AMAQI
9th Jul 2026389 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20262412 PMAQI
9th Jul 2026351 PMAQI
9th Jul 2026272 PMAQI
9th Jul 2026313 PMAQI
9th Jul 2026214 PMAQI
9th Jul 2026275 PMAQI
9th Jul 2026216 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026178 PMAQI
9th Jul 2026219 PMAQI
9th Jul 20261710 PMAQI
9th Jul 20261811 PMAQI
10th Jul 20262012 AMAQI
10th Jul 2026211 AMAQI
10th Jul 2026172 AMAQI
10th Jul 2026103 AMAQI
10th Jul 2026324 AMAQI

26°C22/34°C

10th Jul 2026345 AMAQI
10th Jul 2026376 AMAQI
10th Jul 2026217 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026219 AMAQI
10th Jul 20261710 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 2026296 PMAQI
10th Jul 2026297 PMAQI
10th Jul 2026318 PMAQI
10th Jul 2026309 PMAQI
10th Jul 20263310 PMAQI
10th Jul 20262911 PMAQI
11th Jul 20264012 AMAQI
11th Jul 2026351 AMAQI
11th Jul 2026372 AMAQI
11th Jul 2026723 AMAQI
11th Jul 2026564 AMAQI

25°C21/30°C

11th Jul 2026565 AMAQI
11th Jul 2026466 AMAQI
11th Jul 2026467 AMAQI
11th Jul 2026468 AMAQI
11th Jul 2026429 AMAQI
11th Jul 20264210 AMAQI
11th Jul 20263911 AMAQI
11th Jul 20264212 PMAQI
11th Jul 2026381 PMAQI
11th Jul 2026262 PMAQI
11th Jul 2026173 PMAQI
11th Jul 2026214 PMAQI
11th Jul 2026255 PMAQI
11th Jul 2026156 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026408 PMAQI
11th Jul 2026409 PMAQI
11th Jul 20264710 PMAQI
11th Jul 20262611 PMAQI
12th Jul 20264212 AMAQI
12th Jul 2026331 AMAQI
12th Jul 2026302 AMAQI
12th Jul 2026383 AMAQI
12th Jul 2026284 AMAQI

24°C20/30°C

12th Jul 2026425 AMAQI
12th Jul 2026426 AMAQI
12th Jul 2026367 AMAQI
12th Jul 2026328 AMAQI
12th Jul 2026389 AMAQI
12th Jul 20265410 AMAQI
12th Jul 20264911 AMAQI
12th Jul 20264712 PMAQI
12th Jul 2026381 PMAQI
12th Jul 2026282 PMAQI
12th Jul 2026383 PMAQI
12th Jul 2026504 PMAQI
12th Jul 2026505 PMAQI
12th Jul 2026426 PMAQI
12th Jul 2026367 PMAQI
12th Jul 2026368 PMAQI
12th Jul 2026389 PMAQI
12th Jul 20264210 PMAQI
12th Jul 20264211 PMAQI
13th Jul 20265012 AMAQI
13th Jul 2026441 AMAQI
13th Jul 2026462 AMAQI
13th Jul 2026463 AMAQI
13th Jul 2026464 AMAQI

26°C20/33°C

13th Jul 2026465 AMAQI
13th Jul 2026526 AMAQI
13th Jul 2026347 AMAQI
13th Jul 2026368 AMAQI
13th Jul 2026349 AMAQI
13th Jul 20265310 AMAQI
13th Jul 20265011 AMAQI
13th Jul 20264812 PMAQI
13th Jul 2026331 PMAQI
13th Jul 2026382 PMAQI
13th Jul 2026293 PMAQI
13th Jul 2026334 PMAQI
13th Jul 2026345 PMAQI
13th Jul 2026386 PMAQI
13th Jul 2026467 PMAQI
13th Jul 2026428 PMAQI
13th Jul 2026429 PMAQI
13th Jul 20264410 PMAQI
13th Jul 20263811 PMAQI
14th Jul 20263312 AMAQI
14th Jul 2026501 AMAQI
14th Jul 2026522 AMAQI
14th Jul 2026503 AMAQI
14th Jul 2026504 AMAQI

28°C19/36°C

14th Jul 2026335 AMAQI
14th Jul 2026346 AMAQI
14th Jul 2026347 AMAQI
14th Jul 2026368 AMAQI
14th Jul 2026379 AMAQI
14th Jul 20263810 AMAQI
14th Jul 20263411 AMAQI
14th Jul 20264212 PMAQI
14th Jul 2026341 PMAQI
14th Jul 2026352 PMAQI
14th Jul 2026323 PMAQI
14th Jul 2026284 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026366 PMAQI
14th Jul 2026387 PMAQI
14th Jul 2026328 PMAQI
14th Jul 2026269 PMAQI
14th Jul 20262610 PMAQI
14th Jul 20262211 PMAQI
15th Jul 20262012 AMAQI
15th Jul 2026401 AMAQI
15th Jul 2026942 AMAQI
15th Jul 2026423 AMAQI
15th Jul 2026254 AMAQI

31°C22/40°C

15th Jul 2026295 AMAQI
15th Jul 2026296 AMAQI
15th Jul 2026877 AMAQI
15th Jul 2026298 AMAQI
15th Jul 2026479 AMAQI
15th Jul 20264410 AMAQI
15th Jul 20264411 AMAQI
15th Jul 20264712 PMAQI
15th Jul 2026401 PMAQI
15th Jul 2026512 PMAQI
15th Jul 2026443 PMAQI
15th Jul 2026424 PMAQI
15th Jul 2026295 PMAQI
15th Jul 2026406 PMAQI
15th Jul 2026427 PMAQI
15th Jul 2026408 PMAQI
15th Jul 2026739 PMAQI
15th Jul 202610810 PMAQI
15th Jul 202610611 PMAQI
16th Jul 202613012 AMAQI
16th Jul 2026451 AMAQI
16th Jul 2026542 AMAQI
16th Jul 2026443 AMAQI
16th Jul 2026984 AMAQI

31°C24/39°C

16th Jul 20261135 AMAQI
16th Jul 20262076 AMAQI
16th Jul 20261577 AMAQI
16th Jul 20261878 AMAQI
16th Jul 2026319 AMAQI
16th Jul 20262810 AMAQI
16th Jul 20263011 AMAQI
16th Jul 202625512 PMAQI
16th Jul 2026301 PMAQI
16th Jul 20261372 PMAQI
16th Jul 20261153 PMAQI
16th Jul 20261004 PMAQI
16th Jul 20261315 PMAQI
16th Jul 2026556 PMAQI
16th Jul 20261067 PMAQI
16th Jul 2026328 PMAQI
16th Jul 2026279 PMAQI
16th Jul 20269410 PMAQI
16th Jul 20269811 PMAQI
17th Jul 202610712 AMAQI
17th Jul 2026251 AMAQI
17th Jul 20261782 AMAQI
17th Jul 20262573 AMAQI
17th Jul 20262934 AMAQI

27°C23/34°C

17th Jul 20263535 AMAQI
17th Jul 20263326 AMAQI
17th Jul 20263697 AMAQI
17th Jul 20263308 AMAQI
17th Jul 20263189 AMAQI
17th Jul 202630610 AMAQI
17th Jul 202627611 AMAQI
17th Jul 202629012 PMAQI
17th Jul 2026761 PMAQI
17th Jul 20261682 PMAQI
17th Jul 20261533 PMAQI
17th Jul 20261224 PMAQI
17th Jul 2026985 PMAQI
17th Jul 2026786 PMAQI
17th Jul 2026717 PMAQI
17th Jul 2026648 PMAQI
17th Jul 2026599 PMAQI
17th Jul 20265410 PMAQI
17th Jul 20265111 PMAQI
18th Jul 20265112 AMAQI
18th Jul 2026501 AMAQI
18th Jul 2026462 AMAQI
18th Jul 2026503 AMAQI
18th Jul 2026424 AMAQI

30°C24/35°C

18th Jul 2026445 AMAQI
18th Jul 2026446 AMAQI
18th Jul 2026467 AMAQI
18th Jul 2026448 AMAQI
18th Jul 2026469 AMAQI
18th Jul 20264410 AMAQI
18th Jul 20264211 AMAQI
18th Jul 20264212 PMAQI
18th Jul 2026421 PMAQI
18th Jul 2026402 PMAQI
18th Jul 2026403 PMAQI
18th Jul 2026464 PMAQI
18th Jul 2026505 PMAQI
18th Jul 2026546 PMAQI
18th Jul 2026827 PMAQI
18th Jul 20261168 PMAQI
18th Jul 20261459 PMAQI
18th Jul 202615510 PMAQI
18th Jul 202615911 PMAQI
19th Jul 202617012 AMAQI
19th Jul 20261771 AMAQI
19th Jul 20261712 AMAQI
19th Jul 20261653 AMAQI
19th Jul 20261524 AMAQI

28°C23/35°C

19th Jul 20261475 AMAQI
19th Jul 20261466 AMAQI
19th Jul 20261517 AMAQI
19th Jul 20261468 AMAQI
19th Jul 20261469 AMAQI
19th Jul 202612810 AMAQI
19th Jul 202611911 AMAQI
19th Jul 202611812 PMAQI
19th Jul 20261201 PMAQI
19th Jul 20261122 PMAQI
19th Jul 20261103 PMAQI
19th Jul 20261214 PMAQI
19th Jul 20261245 PMAQI
19th Jul 20261226 PMAQI
19th Jul 20261227 PMAQI
19th Jul 20261268 PMAQI
19th Jul 20261249 PMAQI
19th Jul 202612910 PMAQI
19th Jul 202612511 PMAQI
20th Jul 202613812 AMAQI
20th Jul 20261361 AMAQI
20th Jul 20261322 AMAQI
20th Jul 20261403 AMAQI
20th Jul 20261324 AMAQI

24°C20/30°C

20th Jul 20261355 AMAQI
20th Jul 20261386 AMAQI
20th Jul 20261367 AMAQI
20th Jul 20261428 AMAQI
20th Jul 20261419 AMAQI
20th Jul 202614410 AMAQI
20th Jul 202612811 AMAQI
20th Jul 202611812 PMAQI
20th Jul 20261211 PMAQI
20th Jul 20261152 PMAQI
20th Jul 20261143 PMAQI
20th Jul 20261084 PMAQI
20th Jul 20261165 PMAQI
20th Jul 20261146 PMAQI
20th Jul 20261197 PMAQI
20th Jul 20261128 PMAQI
20th Jul 20261209 PMAQI
20th Jul 202611811 PMAQI
21st Jul 202611212 AMAQI
21st Jul 20261101 AMAQI
21st Jul 2026982 AMAQI
21st Jul 2026863 AMAQI
21st Jul 2026714 AMAQI

24°C18/32°C

21st Jul 2026645 AMAQI
21st Jul 2026526 AMAQI
21st Jul 2026517 AMAQI
21st Jul 2026448 AMAQI
21st Jul 2026409 AMAQI
21st Jul 20262710 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20265212 PMAQI
21st Jul 2026551 PMAQI
21st Jul 2026552 PMAQI
21st Jul 2026543 PMAQI
21st Jul 2026524 PMAQI
21st Jul 2026465 PMAQI
21st Jul 2026466 PMAQI
21st Jul 2026467 PMAQI
21st Jul 2026428 PMAQI
21st Jul 2026319 PMAQI
21st Jul 20263810 PMAQI
21st Jul 20263611 PMAQI
22nd Jul 20263812 AMAQI
22nd Jul 2026461 AMAQI
22nd Jul 2026462 AMAQI
22nd Jul 2026363 AMAQI
22nd Jul 2026314 AMAQI

27°C20/33°C

22nd Jul 2026505 AMAQI
22nd Jul 2026386 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026308 AMAQI
22nd Jul 2026289 AMAQI
22nd Jul 20262010 AMAQI
22nd Jul 20261311 AMAQI
22nd Jul 20262212 PMAQI
22nd Jul 2026161 PMAQI
22nd Jul 2026212 PMAQI
22nd Jul 2026183 PMAQI
22nd Jul 2026254 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026266 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026278 PMAQI
22nd Jul 2026659 PMAQI
22nd Jul 20264810 PMAQI
22nd Jul 20263311 PMAQI
23rd Jul 20263812 AMAQI
23rd Jul 2026331 AMAQI
23rd Jul 2026462 AMAQI
23rd Jul 2026383 AMAQI
23rd Jul 2026304 AMAQI

20°C16/24°C

23rd Jul 2026275 AMAQI
23rd Jul 2026276 AMAQI
23rd Jul 2026367 AMAQI
23rd Jul 2026448 AMAQI
23rd Jul 2026429 AMAQI
23rd Jul 20264410 AMAQI
23rd Jul 20262711 AMAQI
23rd Jul 20262312 PMAQI
23rd Jul 2026511 PMAQI
23rd Jul 2026442 PMAQI
23rd Jul 2026233 PMAQI
23rd Jul 2026214 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026446 PMAQI
23rd Jul 2026427 PMAQI
23rd Jul 2026428 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262910 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20264012 AMAQI
24th Jul 2026421 AMAQI
24th Jul 2026462 AMAQI
24th Jul 2026463 AMAQI
24th Jul 2026424 AMAQI

20°C14/26°C

24th Jul 2026505 AMAQI
24th Jul 2026466 AMAQI
24th Jul 2026487 AMAQI
24th Jul 2026488 AMAQI
24th Jul 2026519 AMAQI
24th Jul 20265010 AMAQI
24th Jul 20264811 AMAQI
24th Jul 20264812 PMAQI
24th Jul 2026521 PMAQI
24th Jul 2026502 PMAQI
24th Jul 2026273 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026385 PMAQI
24th Jul 2026366 PMAQI
24th Jul 2026327 PMAQI
24th Jul 2026278 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20263310 PMAQI
24th Jul 20263011 PMAQI
25th Jul 20265412 AMAQI
25th Jul 2026461 AMAQI
25th Jul 2026462 AMAQI
25th Jul 2026443 AMAQI
25th Jul 2026464 AMAQI

22°C16/28°C

25th Jul 2026465 AMAQI
25th Jul 2026236 AMAQI
25th Jul 2026387 AMAQI
25th Jul 2026488 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20264510 AMAQI
25th Jul 20262111 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026381 PMAQI
25th Jul 2026402 PMAQI
25th Jul 2026423 PMAQI
25th Jul 2026444 PMAQI
25th Jul 2026465 PMAQI
25th Jul 2026446 PMAQI
25th Jul 2026527 PMAQI
25th Jul 2026538 PMAQI
25th Jul 2026519 PMAQI
25th Jul 20265110 PMAQI
25th Jul 20264811 PMAQI
26th Jul 20265012 AMAQI
26th Jul 2026481 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026443 AMAQI
26th Jul 2026444 AMAQI

23°C17/31°C

26th Jul 2026465 AMAQI
26th Jul 2026506 AMAQI
26th Jul 2026467 AMAQI
26th Jul 2026468 AMAQI
26th Jul 2026469 AMAQI
26th Jul 20265010 AMAQI
26th Jul 20265011 AMAQI
26th Jul 20265012 PMAQI
26th Jul 2026521 PMAQI
26th Jul 2026552 PMAQI
26th Jul 2026573 PMAQI
26th Jul 2026624 PMAQI
26th Jul 2026585 PMAQI
26th Jul 2026586 PMAQI
26th Jul 2026577 PMAQI
26th Jul 2026568 PMAQI
26th Jul 2026589 PMAQI
26th Jul 20265610 PMAQI
26th Jul 20265511 PMAQI
27th Jul 20265412 AMAQI
27th Jul 2026541 AMAQI
27th Jul 2026532 AMAQI
27th Jul 2026533 AMAQI
27th Jul 2026534 AMAQI

28°C22/36°C

27th Jul 2026555 AMAQI
27th Jul 2026556 AMAQI
27th Jul 2026587 AMAQI
27th Jul 2026658 AMAQI
27th Jul 2026679 AMAQI
27th Jul 20266410 AMAQI
27th Jul 20265911 AMAQI
27th Jul 20266312 PMAQI
27th Jul 2026591 PMAQI
27th Jul 2026552 PMAQI
27th Jul 2026483 PMAQI
27th Jul 2026484 PMAQI
27th Jul 2026335 PMAQI
27th Jul 2026346 PMAQI
27th Jul 2026367 PMAQI
27th Jul 2026408 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20263110 PMAQI
27th Jul 20263211 PMAQI
28th Jul 20264412 AMAQI
28th Jul 2026441 AMAQI
28th Jul 2026442 AMAQI
28th Jul 2026463 AMAQI
28th Jul 2026444 AMAQI

26°C22/32°C

28th Jul 2026445 AMAQI
28th Jul 2026446 AMAQI
28th Jul 2026427 AMAQI
28th Jul 2026428 AMAQI
28th Jul 2026409 AMAQI
28th Jul 20264610 AMAQI
28th Jul 20264811 AMAQI
28th Jul 20265012 PMAQI
28th Jul 2026521 PMAQI
28th Jul 2026532 PMAQI
28th Jul 2026523 PMAQI
28th Jul 2026484 PMAQI
28th Jul 2026485 PMAQI
28th Jul 2026426 PMAQI
28th Jul 2026387 PMAQI
28th Jul 2026358 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20263610 PMAQI
28th Jul 20263111 PMAQI
29th Jul 20264012 AMAQI
29th Jul 2026421 AMAQI
29th Jul 2026342 AMAQI
29th Jul 2026363 AMAQI
29th Jul 2026284 AMAQI

21°C18/24°C

29th Jul 2026365 AMAQI
29th Jul 2026386 AMAQI
29th Jul 2026427 AMAQI
29th Jul 2026278 AMAQI
29th Jul 2026259 AMAQI
29th Jul 20263010 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 2026255 PMAQI
29th Jul 2026386 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026218 PMAQI
29th Jul 2026429 PMAQI
29th Jul 20264510 PMAQI
29th Jul 20264011 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026292 AMAQI
30th Jul 2026483 AMAQI
30th Jul 2026494 AMAQI

22°C17/27°C

30th Jul 2026465 AMAQI
30th Jul 2026326 AMAQI
30th Jul 2026347 AMAQI
30th Jul 2026428 AMAQI
30th Jul 2026449 AMAQI
30th Jul 20264210 AMAQI
30th Jul 20264411 AMAQI
30th Jul 20262312 PMAQI
30th Jul 2026211 PMAQI
30th Jul 2026252 PMAQI
30th Jul 2026253 PMAQI
30th Jul 2026444 PMAQI
30th Jul 2026405 PMAQI
30th Jul 2026426 PMAQI
30th Jul 2026387 PMAQI
30th Jul 2026468 PMAQI
30th Jul 2026449 PMAQI
30th Jul 20264610 PMAQI
30th Jul 20264611 PMAQI
31st Jul 20264812 AMAQI
31st Jul 2026441 AMAQI
31st Jul 2026482 AMAQI
31st Jul 2026463 AMAQI
31st Jul 2026504 AMAQI

23°C19/27°C

31st Jul 2026505 AMAQI
31st Jul 2026466 AMAQI
31st Jul 2026487 AMAQI
31st Jul 2026448 AMAQI
31st Jul 2026489 AMAQI
31st Jul 20264410 AMAQI
31st Jul 20264611 AMAQI
31st Jul 20264412 PMAQI
31st Jul 2026441 PMAQI
31st Jul 2026462 PMAQI
31st Jul 2026483 PMAQI
31st Jul 2026444 PMAQI
31st Jul 2026425 PMAQI
31st Jul 2026386 PMAQI
31st Jul 2026277 PMAQI
31st Jul 2026298 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 2026404 AMAQI

24°C19/32°C

1st Aug 2026425 AMAQI
1st Aug 2026446 AMAQI
1st Aug 2026447 AMAQI
1st Aug 2026448 AMAQI
1st Aug 2026449 AMAQI
1st Aug 20264410 AMAQI
1st Aug 20263811 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026441 PMAQI
1st Aug 2026462 PMAQI
1st Aug 2026463 PMAQI
1st Aug 2026484 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026467 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026409 PMAQI
1st Aug 20264610 PMAQI
1st Aug 20264411 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026461 AMAQI
2nd Aug 2026442 AMAQI
2nd Aug 2026463 AMAQI
2nd Aug 2026444 AMAQI

21°C20/23°C

2nd Aug 2026425 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026467 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026429 AMAQI
2nd Aug 20264610 AMAQI
2nd Aug 20264411 AMAQI
2nd Aug 20264412 PMAQI
2nd Aug 2026481 PMAQI
2nd Aug 2026482 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026464 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026466 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026448 PMAQI
2nd Aug 2026429 PMAQI
2nd Aug 20264410 PMAQI
2nd Aug 20264611 PMAQI
3rd Aug 20264212 AMAQI
3rd Aug 2026331 AMAQI
3rd Aug 2026382 AMAQI
3rd Aug 2026363 AMAQI
3rd Aug 2026384 AMAQI

21°C19/23°C

3rd Aug 2026345 AMAQI
3rd Aug 2026366 AMAQI
3rd Aug 2026387 AMAQI
3rd Aug 2026328 AMAQI
3rd Aug 2026369 AMAQI
3rd Aug 20264010 AMAQI
3rd Aug 20263611 AMAQI
3rd Aug 20264412 PMAQI
3rd Aug 2026421 PMAQI
3rd Aug 2026462 PMAQI
3rd Aug 2026443 PMAQI
3rd Aug 2026424 PMAQI
3rd Aug 2026445 PMAQI
3rd Aug 2026446 PMAQI
3rd Aug 2026427 PMAQI
3rd Aug 2026448 PMAQI
3rd Aug 2026409 PMAQI
3rd Aug 20264010 PMAQI
3rd Aug 20264411 PMAQI
4th Aug 20264812 AMAQI
4th Aug 2026481 AMAQI
4th Aug 2026462 AMAQI
4th Aug 2026423 AMAQI
4th Aug 2026464 AMAQI

22°C17/28°C

4th Aug 2026465 AMAQI
4th Aug 2026486 AMAQI
4th Aug 2026447 AMAQI
4th Aug 2026488 AMAQI
4th Aug 2026489 AMAQI
4th Aug 20265110 AMAQI
4th Aug 20264811 AMAQI
4th Aug 20264412 PMAQI
4th Aug 2026461 PMAQI
4th Aug 2026442 PMAQI
4th Aug 2026463 PMAQI
4th Aug 2026464 PMAQI
4th Aug 2026465 PMAQI
4th Aug 2026466 PMAQI
4th Aug 2026447 PMAQI
4th Aug 2026468 PMAQI
4th Aug 2026489 PMAQI
4th Aug 20264610 PMAQI
4th Aug 20264611 PMAQI
5th Aug 20265112 AMAQI
5th Aug 2026491 AMAQI
5th Aug 2026482 AMAQI
5th Aug 2026483 AMAQI
5th Aug 2026484 AMAQI

25°C19/34°C

5th Aug 2026445 AMAQI
5th Aug 2026446 AMAQI
5th Aug 2026447 AMAQI
5th Aug 2026468 AMAQI
5th Aug 2026519 AMAQI
5th Aug 20265010 AMAQI
5th Aug 20265111 AMAQI
5th Aug 20265212 PMAQI
5th Aug 2026511 PMAQI
5th Aug 2026512 PMAQI
5th Aug 2026513 PMAQI
5th Aug 2026524 PMAQI
5th Aug 2026525 PMAQI
5th Aug 2026516 PMAQI
5th Aug 2026517 PMAQI
5th Aug 2026488 PMAQI
5th Aug 2026429 PMAQI
5th Aug 20264610 PMAQI
5th Aug 20264211 PMAQI
6th Aug 20264412 AMAQI
6th Aug 2026441 AMAQI
6th Aug 2026422 AMAQI
6th Aug 2026463 AMAQI
6th Aug 2026444 AMAQI

25°C21/30°C

6th Aug 2026465 AMAQI
6th Aug 2026466 AMAQI
6th Aug 2026517 AMAQI
6th Aug 2026508 AMAQI
6th Aug 2026549 AMAQI
6th Aug 20265610 AMAQI
6th Aug 20266011 AMAQI
6th Aug 20266312 PMAQI
6th Aug 2026591 PMAQI
6th Aug 2026632 PMAQI
6th Aug 2026633 PMAQI
6th Aug 2026604 PMAQI
6th Aug 2026585 PMAQI
6th Aug 2026566 PMAQI
6th Aug 2026547 PMAQI
6th Aug 2026508 PMAQI
6th Aug 2026489 PMAQI
6th Aug 20265210 PMAQI
6th Aug 20265211 PMAQI
7th Aug 20265312 AMAQI
7th Aug 2026531 AMAQI
7th Aug 2026532 AMAQI
7th Aug 2026533 AMAQI
7th Aug 2026514 AMAQI

23°C19/26°C

7th Aug 2026535 AMAQI
5 AM
7th Aug 2026486 AMAQI
7th Aug 2026467 AMAQI
7th Aug 2026488 AMAQI
7th Aug 2026509 AMAQI
7th Aug 20264910 AMAQI
7th Aug 20264811 AMAQI
7th Aug 20264612 PMAQI
12 PM
7th Aug 2026441 PMAQI
7th Aug 2026402 PMAQI
7th Aug 2026423 PMAQI
7th Aug 2026424 PMAQI
7th Aug 2026425 PMAQI
7th Aug 2026426 PMAQI
7th Aug 2026447 PMAQI
7th Aug 2026388 PMAQI
8 PM
7th Aug 2026409 PMAQI
7th Aug 20264410 PMAQI
7th Aug 20264211 PMAQI
12 AM
4 AM

25°C20/31°C

Day time
Avg. Highest Time
7 AM

65AQI

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

47AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 7 AM (Avg. 65), while the lowest AQI was between 6 PM to 6 PM (Avg. 47).
Night time
Avg. Highest Time
3 AM - 4 AM

60AQI

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

50AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 4 AM (Avg. 60), while the lowest AQI was between 9 PM to 9 PM (Avg. 50).

2026 Days Vs Air Quality

Oak Park, Illinois, United States

2026

91%

197

7%

16

0.9%

2

0.4%

1

Total number of days with different AQI categories in last 219 days in 2026 (146 days remaining)

Good
197 Days
Moderate
16 Days
Poor
2 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 91%

Health Risk Level:

Very Low

In 2026, 91% of 219 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

Oak 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
19AQI (US)
2nd January 2026
25AQI (US)
3rd January 2026
27AQI (US)
4th January 2026
33AQI (US)
5th January 2026
48AQI (US)
6th January 2026
77AQI (US)
7th January 2026
53AQI (US)
8th January 2026
50AQI (US)
9th January 2026
24AQI (US)
10th January 2026
29AQI (US)
11th January 2026
21AQI (US)
12th January 2026
21AQI (US)
13th January 2026
29AQI (US)
14th January 2026
17AQI (US)
15th January 2026
14AQI (US)
16th January 2026
24AQI (US)
17th January 2026
17AQI (US)
18th January 2026
17AQI (US)
19th January 2026
20AQI (US)
20th January 2026
26AQI (US)
21st January 2026
36AQI (US)
22nd January 2026
59AQI (US)
23rd January 2026
58AQI (US)
24th January 2026
48AQI (US)
25th January 2026
49AQI (US)
26th January 2026
47AQI (US)
27th January 2026
36AQI (US)
28th January 2026
42AQI (US)
29th January 2026
50AQI (US)
30th January 2026
58AQI (US)
31st January 2026
41AQI (US)
1st February 2026
44AQI (US)
2nd February 2026
51AQI (US)
3rd February 2026
47AQI (US)
4th February 2026
43AQI (US)
5th February 2026
51AQI (US)
6th February 2026
45AQI (US)
7th February 2026
39AQI (US)
8th February 2026
40AQI (US)
9th February 2026
45AQI (US)
10th February 2026
39AQI (US)
11th February 2026
32AQI (US)
12th February 2026
29AQI (US)
13th February 2026
36AQI (US)
14th February 2026
41AQI (US)
15th February 2026
44AQI (US)
16th February 2026
41AQI (US)
17th February 2026
42AQI (US)
18th February 2026
39AQI (US)
19th February 2026
35AQI (US)
20th February 2026
35AQI (US)
21st February 2026
34AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
37AQI (US)
24th February 2026
35AQI (US)
25th February 2026
30AQI (US)
26th February 2026
28AQI (US)
27th February 2026
29AQI (US)
28th February 2026
33AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
54AQI (US)
3rd March 2026
32AQI (US)
4th March 2026
39AQI (US)
5th March 2026
38AQI (US)
6th March 2026
30AQI (US)
7th March 2026
36AQI (US)
8th March 2026
39AQI (US)
9th March 2026
32AQI (US)
10th March 2026
32AQI (US)
11th March 2026
41AQI (US)
12th March 2026
37AQI (US)
13th March 2026
37AQI (US)
14th March 2026
35AQI (US)
15th March 2026
27AQI (US)
16th March 2026
37AQI (US)
17th March 2026
33AQI (US)
18th March 2026
27AQI (US)
19th March 2026
38AQI (US)
20th March 2026
39AQI (US)
21st March 2026
34AQI (US)
22nd March 2026
32AQI (US)
23rd March 2026
38AQI (US)
24th March 2026
27AQI (US)
25th March 2026
27AQI (US)
26th March 2026
32AQI (US)
27th March 2026
29AQI (US)
28th March 2026
28AQI (US)
29th March 2026
24AQI (US)
30th March 2026
25AQI (US)
31st March 2026
26AQI (US)
1st April 2026
29AQI (US)
2nd April 2026
22AQI (US)
3rd April 2026
27AQI (US)
4th April 2026
30AQI (US)
5th April 2026
29AQI (US)
6th April 2026
31AQI (US)
7th April 2026
27AQI (US)
8th April 2026
29AQI (US)
9th April 2026
22AQI (US)
10th April 2026
32AQI (US)
11th April 2026
28AQI (US)
12th April 2026
24AQI (US)
13th April 2026
24AQI (US)
14th April 2026
26AQI (US)
15th April 2026
28AQI (US)
16th April 2026
27AQI (US)
17th April 2026
18th April 2026
27AQI (US)
19th April 2026
32AQI (US)
20th April 2026
27AQI (US)
21st April 2026
18AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
24th April 2026
22AQI (US)
25th April 2026
26AQI (US)
26th April 2026
33AQI (US)
27th April 2026
17AQI (US)
28th April 2026
24AQI (US)
29th April 2026
24AQI (US)
30th April 2026
26AQI (US)
1st May 2026
24AQI (US)
2nd May 2026
23AQI (US)
3rd May 2026
19AQI (US)
4th May 2026
33AQI (US)
5th May 2026
36AQI (US)
6th May 2026
27AQI (US)
7th May 2026
23AQI (US)
8th May 2026
29AQI (US)
9th May 2026
10th May 2026
30AQI (US)
11th May 2026
28AQI (US)
12th May 2026
22AQI (US)
13th May 2026
26AQI (US)
14th May 2026
24AQI (US)
15th May 2026
34AQI (US)
16th May 2026
47AQI (US)
17th May 2026
44AQI (US)
18th May 2026
54AQI (US)
19th May 2026
51AQI (US)
20th May 2026
50AQI (US)
21st May 2026
43AQI (US)
22nd May 2026
40AQI (US)
23rd May 2026
39AQI (US)
24th May 2026
40AQI (US)
25th May 2026
40AQI (US)
26th May 2026
31AQI (US)
27th May 2026
28AQI (US)
28th May 2026
15AQI (US)
29th May 2026
21AQI (US)
30th May 2026
27AQI (US)
31st May 2026
27AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
21AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
25AQI (US)
5th June 2026
32AQI (US)
6th June 2026
21AQI (US)
7th June 2026
24AQI (US)
8th June 2026
25AQI (US)
9th June 2026
23AQI (US)
10th June 2026
23AQI (US)
11th June 2026
24AQI (US)
12th June 2026
25AQI (US)
13th June 2026
22AQI (US)
14th June 2026
22AQI (US)
15th June 2026
23AQI (US)
16th June 2026
25AQI (US)
17th June 2026
25AQI (US)
18th June 2026
24AQI (US)
19th June 2026
21AQI (US)
20th June 2026
20AQI (US)
21st June 2026
25AQI (US)
22nd June 2026
21AQI (US)
23rd June 2026
17AQI (US)
24th June 2026
21AQI (US)
25th June 2026
15AQI (US)
26th June 2026
22AQI (US)
27th June 2026
30AQI (US)
28th June 2026
27AQI (US)
29th June 2026
25AQI (US)
30th June 2026
41AQI (US)
1st July 2026
40AQI (US)
2nd July 2026
25AQI (US)
3rd July 2026
23AQI (US)
4th July 2026
31AQI (US)
5th July 2026
44AQI (US)
6th July 2026
38AQI (US)
7th July 2026
36AQI (US)
8th July 2026
37AQI (US)
9th July 2026
28AQI (US)
10th July 2026
25AQI (US)
11th July 2026
38AQI (US)
12th July 2026
40AQI (US)
13th July 2026
42AQI (US)
14th July 2026
36AQI (US)
15th July 2026
50AQI (US)
16th July 2026
96AQI (US)
17th July 2026
184AQI (US)
18th July 2026
63AQI (US)
19th July 2026
136AQI (US)
20th July 2026
127AQI (US)
21st July 2026
56AQI (US)
22nd July 2026
32AQI (US)
23rd July 2026
36AQI (US)
24th July 2026
41AQI (US)
25th July 2026
44AQI (US)
26th July 2026
52AQI (US)
27th July 2026
51AQI (US)
28th July 2026
43AQI (US)
29th July 2026
34AQI (US)
30th July 2026
38AQI (US)
31st July 2026
42AQI (US)
1st August 2026
42AQI (US)
2nd August 2026
45AQI (US)
3rd August 2026
40AQI (US)
4th August 2026
46AQI (US)
5th August 2026
48AQI (US)
6th August 2026
53AQI (US)
7th August 2026
46AQI (US)
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

36AQI (US)

39AQI (US)

34AQI (US)

26AQI (US)

33AQI (US)

24AQI (US)

52AQI (US)

46AQI (US)

No. of days

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

202635AQI (US)

26
5
26
2
30
1
28
28
2
30
23
5
2
1
6
1
197
16
2
1

Highest AQI (US) recorded in

July

52AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202541AQI (US)

30
1
26
2
29
2
27
3
31
14
16
14
16
1
17
14
15
15
21
10
17
13
18
13
259
105
1

Highest AQI (US) recorded in

June

56AQI (US)

Lowest AQI (US) recorded in

May

27AQI (US)

202431AQI (US)

20
10
21
8
29
2
30
31
29
29
2
30
1
30
29
2
27
3
29
2
334
30

Highest AQI (US) recorded in

January

44AQI (US)

Lowest AQI (US) recorded in

June

22AQI (US)

202340AQI (US)

25
5
27
1
31
29
1
25
6
5
22
1
2
22
7
2
25
6
28
2
29
1
24
5
23
7
293
63
3
2

Highest AQI (US) recorded in

June

70AQI (US)

Lowest AQI (US) recorded in

April

31AQI (US)

202238AQI (US)

25
4
8
2
23
3
24
1
22
4
1
20
2
22
1
1
26
2
25
6
26
4
25
6
247
35
1

Highest AQI (US) recorded in

January

45AQI (US)

Lowest AQI (US) recorded in

April

31AQI (US)

202139AQI (US)

17
8
20
8
22
4
23
5
15
30
19
12
24
7
30
28
2
26
2
24
4
278
52

Highest AQI (US) recorded in

July

46AQI (US)

Lowest AQI (US) recorded in

June

33AQI (US)

202039AQI (US)

8
4
2
3
1
17
12
30
17

Highest AQI (US) recorded in

December

42AQI (US)

Lowest AQI (US) recorded in

October

18AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
41AQI (US)
Least Polluted Year Recorded
2024(Avg.)
31AQI (US)

Oak Park's annual 2026 AQI (US) (35) shows an average percentage change of -7.1% (improved AQI (US)) compared to previous years: 2020 (39), 2021 (39), 2022 (38), 2023 (40), 2024 (31), 2025 (41).