Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Elgin, 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

Elgin, Illinois, United States

2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
111AQI
Lowest AQI recorded on
25th Aug 2025
17AQI

Same Day Analysis (31st August):
On this day, AQI across the 1 years varied significantly: 2026 ranks 1st highest AQI at 32 of Good air quality on the same day.

Day & Night AQI Trend: 31st Jul - 1st Aug 2026

Elgin, Illinois, United States

AQI
Day
Night
.

5 AM31st Jul 2026

8 PM

4 AM1st Aug 2026

Day time
Avg. Highest Time
5AM31st Jul

68AQI

Avg. Lowest Time
8PM31st Jul

29AQI

Night time
Avg. Highest Time
1AM1st Aug

42AQI

Avg. Lowest Time
11PM31st Jul

21AQI

In the last 24 hours,

Elgin's AQI reached its highest point of 68 at 5 AM during the Day, while the lowest point, 21, was recorded at 11 PM during the Night between 31st Jul and 1st Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Elgin, Illinois, United States

JulAug
03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st
Day
Night
3rd Jul 2026105 AMAQI
3rd Jul 2026226 AMAQI
3rd Jul 2026187 AMAQI
3rd Jul 2026128 AMAQI
3rd Jul 2026229 AMAQI
3rd Jul 20261210 AMAQI
3rd Jul 20262211 AMAQI
3rd Jul 20263212 PMAQI
3rd Jul 2026241 PMAQI
3rd Jul 2026282 PMAQI
3rd Jul 2026203 PMAQI
3rd Jul 2026264 PMAQI
3rd Jul 2026175 PMAQI
3rd Jul 2026126 PMAQI
3rd Jul 2026187 PMAQI
3rd Jul 2026168 PMAQI
3rd Jul 2026249 PMAQI
3rd Jul 20262510 PMAQI
3rd Jul 20262511 PMAQI
4th Jul 20262912 AMAQI
4th Jul 2026211 AMAQI
4th Jul 2026402 AMAQI
4th Jul 2026423 AMAQI
4th Jul 2026204 AMAQI

27°C22/34°C

4th Jul 2026285 AMAQI
4th Jul 2026166 AMAQI
4th Jul 2026257 AMAQI
4th Jul 2026478 AMAQI
4th Jul 2026289 AMAQI
4th Jul 20262710 AMAQI
4th Jul 20263811 AMAQI
4th Jul 20261812 PMAQI
4th Jul 2026141 PMAQI
4th Jul 2026292 PMAQI
4th Jul 2026403 PMAQI
4th Jul 2026254 PMAQI
4th Jul 2026405 PMAQI
4th Jul 2026166 PMAQI
4th Jul 2026207 PMAQI
4th Jul 2026218 PMAQI
4th Jul 2026259 PMAQI
4th Jul 20262510 PMAQI
4th Jul 202610911 PMAQI
5th Jul 202611012 AMAQI
5th Jul 2026621 AMAQI
5th Jul 2026632 AMAQI
5th Jul 2026563 AMAQI
5th Jul 2026504 AMAQI

24°C20/31°C

5th Jul 2026335 AMAQI
5th Jul 2026516 AMAQI
5th Jul 2026267 AMAQI
5th Jul 2026488 AMAQI
5th Jul 2026439 AMAQI
5th Jul 20264410 AMAQI
5th Jul 20264111 AMAQI
5th Jul 20262812 PMAQI
5th Jul 2026541 PMAQI
5th Jul 2026462 PMAQI
5th Jul 2026583 PMAQI
5th Jul 2026504 PMAQI
5th Jul 2026445 PMAQI
5th Jul 2026456 PMAQI
5th Jul 2026507 PMAQI
5th Jul 2026448 PMAQI
5th Jul 2026279 PMAQI
5th Jul 20263310 PMAQI
5th Jul 20263311 PMAQI
6th Jul 20263312 AMAQI
6th Jul 2026291 AMAQI
6th Jul 2026472 AMAQI
6th Jul 2026473 AMAQI
6th Jul 2026484 AMAQI

22°C18/28°C

6th Jul 2026495 AMAQI
6th Jul 2026346 AMAQI
6th Jul 2026467 AMAQI
6th Jul 2026448 AMAQI
6th Jul 2026429 AMAQI
6th Jul 20262510 AMAQI
6th Jul 20264011 AMAQI
6th Jul 20264212 PMAQI
6th Jul 2026451 PMAQI
6th Jul 2026422 PMAQI
6th Jul 2026423 PMAQI
6th Jul 2026404 PMAQI
6th Jul 2026385 PMAQI
6th Jul 2026366 PMAQI
6th Jul 2026217 PMAQI
6th Jul 2026328 PMAQI
6th Jul 2026369 PMAQI
6th Jul 20263810 PMAQI
6th Jul 20264011 PMAQI
7th Jul 20262912 AMAQI
7th Jul 2026381 AMAQI
7th Jul 2026542 AMAQI
7th Jul 2026323 AMAQI
7th Jul 2026304 AMAQI

23°C18/29°C

7th Jul 2026425 AMAQI
7th Jul 2026456 AMAQI
7th Jul 2026387 AMAQI
7th Jul 2026338 AMAQI
7th Jul 2026339 AMAQI
7th Jul 20263310 AMAQI
7th Jul 20263111 AMAQI
7th Jul 20263312 PMAQI
7th Jul 2026381 PMAQI
7th Jul 2026332 PMAQI
7th Jul 2026293 PMAQI
7th Jul 2026384 PMAQI
7th Jul 2026335 PMAQI
7th Jul 2026336 PMAQI
7th Jul 2026337 PMAQI
7th Jul 2026388 PMAQI
7th Jul 2026449 PMAQI
7th Jul 20264610 PMAQI
7th Jul 20263611 PMAQI
8th Jul 20263812 AMAQI
8th Jul 2026421 AMAQI
8th Jul 2026422 AMAQI
8th Jul 2026423 AMAQI
8th Jul 2026294 AMAQI

24°C17/31°C

8th Jul 2026425 AMAQI
8th Jul 2026426 AMAQI
8th Jul 2026467 AMAQI
8th Jul 2026468 AMAQI
8th Jul 2026429 AMAQI
8th Jul 20263210 AMAQI
8th Jul 20263311 AMAQI
8th Jul 20263312 PMAQI
8th Jul 2026401 PMAQI
8th Jul 2026292 PMAQI
8th Jul 2026363 PMAQI
8th Jul 2026444 PMAQI
8th Jul 2026445 PMAQI
8th Jul 2026386 PMAQI
8th Jul 2026297 PMAQI
8th Jul 2026338 PMAQI
8th Jul 2026339 PMAQI
8th Jul 20263310 PMAQI
8th Jul 20263811 PMAQI
9th Jul 20263312 AMAQI
9th Jul 2026441 AMAQI
9th Jul 2026462 AMAQI
9th Jul 2026403 AMAQI
9th Jul 2026294 AMAQI

25°C18/33°C

9th Jul 2026295 AMAQI
9th Jul 2026216 AMAQI
9th Jul 2026387 AMAQI
9th Jul 2026288 AMAQI
9th Jul 2026309 AMAQI
9th Jul 20262910 AMAQI
9th Jul 20263011 AMAQI
9th Jul 20262512 PMAQI
9th Jul 2026241 PMAQI
9th Jul 2026222 PMAQI
9th Jul 2026323 PMAQI
9th Jul 2026174 PMAQI
9th Jul 2026245 PMAQI
9th Jul 2026176 PMAQI
9th Jul 2026287 PMAQI
9th Jul 2026178 PMAQI
9th Jul 2026219 PMAQI
9th Jul 20262110 PMAQI
9th Jul 20261211 PMAQI
10th Jul 20262012 AMAQI
10th Jul 2026141 AMAQI
10th Jul 2026172 AMAQI
10th Jul 2026213 AMAQI
10th Jul 2026514 AMAQI

25°C21/31°C

10th Jul 2026405 AMAQI
10th Jul 2026446 AMAQI
10th Jul 2026217 AMAQI
10th Jul 2026328 AMAQI
10th Jul 2026219 AMAQI
10th Jul 20262810 AMAQI
10th Jul 20261711 AMAQI
10th Jul 20262112 PMAQI
10th Jul 2026171 PMAQI
10th Jul 2026212 PMAQI
10th Jul 2026213 PMAQI
10th Jul 2026214 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026366 PMAQI
10th Jul 2026367 PMAQI
10th Jul 2026228 PMAQI
10th Jul 2026309 PMAQI
10th Jul 20263310 PMAQI
10th Jul 20262911 PMAQI
11th Jul 20263812 AMAQI
11th Jul 2026381 AMAQI
11th Jul 2026342 AMAQI
11th Jul 2026723 AMAQI
11th Jul 2026564 AMAQI

24°C19/31°C

11th Jul 2026545 AMAQI
11th Jul 2026466 AMAQI
11th Jul 2026467 AMAQI
11th Jul 2026428 AMAQI
11th Jul 2026429 AMAQI
11th Jul 20264210 AMAQI
11th Jul 20263411 AMAQI
11th Jul 20264212 PMAQI
11th Jul 2026421 PMAQI
11th Jul 2026222 PMAQI
11th Jul 2026213 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026255 PMAQI
11th Jul 2026156 PMAQI
11th Jul 2026267 PMAQI
11th Jul 2026408 PMAQI
11th Jul 2026409 PMAQI
11th Jul 20265110 PMAQI
11th Jul 20263211 PMAQI
12th Jul 20264612 AMAQI
12th Jul 2026381 AMAQI
12th Jul 2026322 AMAQI
12th Jul 2026363 AMAQI
12th Jul 2026284 AMAQI

23°C17/31°C

12th Jul 2026425 AMAQI
12th Jul 2026426 AMAQI
12th Jul 2026377 AMAQI
12th Jul 2026328 AMAQI
12th Jul 2026469 AMAQI
12th Jul 20265410 AMAQI
12th Jul 20264911 AMAQI
12th Jul 20264912 PMAQI
12th Jul 2026381 PMAQI
12th Jul 2026282 PMAQI
12th Jul 2026383 PMAQI
12th Jul 2026504 PMAQI
12th Jul 2026505 PMAQI
12th Jul 2026446 PMAQI
12th Jul 2026427 PMAQI
12th Jul 2026368 PMAQI
12th Jul 2026389 PMAQI
12th Jul 20264210 PMAQI
12th Jul 20264211 PMAQI
13th Jul 20265012 AMAQI
13th Jul 2026461 AMAQI
13th Jul 2026462 AMAQI
13th Jul 2026463 AMAQI
13th Jul 2026504 AMAQI

25°C17/34°C

13th Jul 2026465 AMAQI
13th Jul 2026526 AMAQI
13th Jul 2026507 AMAQI
13th Jul 2026448 AMAQI
13th Jul 2026429 AMAQI
13th Jul 20265310 AMAQI
13th Jul 20265011 AMAQI
13th Jul 20264812 PMAQI
13th Jul 2026341 PMAQI
13th Jul 2026382 PMAQI
13th Jul 2026293 PMAQI
13th Jul 2026334 PMAQI
13th Jul 2026315 PMAQI
13th Jul 2026386 PMAQI
13th Jul 2026447 PMAQI
13th Jul 2026428 PMAQI
13th Jul 2026409 PMAQI
13th Jul 20264410 PMAQI
13th Jul 20263311 PMAQI
14th Jul 20263312 AMAQI
14th Jul 2026501 AMAQI
14th Jul 2026522 AMAQI
14th Jul 2026503 AMAQI
14th Jul 2026484 AMAQI

27°C19/35°C

14th Jul 2026335 AMAQI
14th Jul 2026346 AMAQI
14th Jul 2026347 AMAQI
14th Jul 2026388 AMAQI
14th Jul 2026389 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20262511 AMAQI
14th Jul 20262712 PMAQI
14th Jul 2026321 PMAQI
14th Jul 2026342 PMAQI
14th Jul 2026303 PMAQI
14th Jul 2026304 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026346 PMAQI
14th Jul 2026397 PMAQI
14th Jul 2026288 PMAQI
14th Jul 2026209 PMAQI
14th Jul 20262210 PMAQI
14th Jul 20262211 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026421 AMAQI
15th Jul 2026932 AMAQI
15th Jul 2026483 AMAQI
15th Jul 2026294 AMAQI

28°C20/38°C

15th Jul 2026295 AMAQI
15th Jul 2026346 AMAQI
15th Jul 2026887 AMAQI
15th Jul 2026338 AMAQI
15th Jul 2026529 AMAQI
15th Jul 20264410 AMAQI
15th Jul 20264411 AMAQI
15th Jul 20264712 PMAQI
15th Jul 2026441 PMAQI
15th Jul 2026552 PMAQI
15th Jul 2026443 PMAQI
15th Jul 2026404 PMAQI
15th Jul 2026295 PMAQI
15th Jul 2026406 PMAQI
15th Jul 2026427 PMAQI
15th Jul 2026428 PMAQI
15th Jul 2026629 PMAQI
15th Jul 202613010 PMAQI
15th Jul 202610411 PMAQI
16th Jul 202614312 AMAQI
16th Jul 2026521 AMAQI
16th Jul 2026662 AMAQI
16th Jul 2026803 AMAQI
16th Jul 20261194 AMAQI

29°C22/38°C

16th Jul 20261325 AMAQI
16th Jul 20262116 AMAQI
16th Jul 20261677 AMAQI
16th Jul 20262138 AMAQI
16th Jul 2026329 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20263111 AMAQI
16th Jul 202625812 PMAQI
16th Jul 2026311 PMAQI
16th Jul 20261382 PMAQI
16th Jul 20261173 PMAQI
16th Jul 20261014 PMAQI
16th Jul 20261305 PMAQI
16th Jul 2026546 PMAQI
16th Jul 20261067 PMAQI
16th Jul 2026308 PMAQI
16th Jul 2026269 PMAQI
16th Jul 202611410 PMAQI
16th Jul 202611611 PMAQI
17th Jul 202616712 AMAQI
17th Jul 2026261 AMAQI
17th Jul 20261802 AMAQI
17th Jul 20262403 AMAQI
17th Jul 20263284 AMAQI

27°C21/37°C

17th Jul 20263525 AMAQI
17th Jul 20263516 AMAQI
17th Jul 20263427 AMAQI
17th Jul 20263708 AMAQI
17th Jul 20263229 AMAQI
17th Jul 202632410 AMAQI
17th Jul 202630211 AMAQI
17th Jul 202631812 PMAQI
17th Jul 2026781 PMAQI
17th Jul 20261812 PMAQI
17th Jul 20261573 PMAQI
17th Jul 20261264 PMAQI
17th Jul 2026945 PMAQI
17th Jul 2026866 PMAQI
17th Jul 2026737 PMAQI
17th Jul 2026688 PMAQI
17th Jul 2026629 PMAQI
17th Jul 20265710 PMAQI
17th Jul 20265411 PMAQI
18th Jul 20265412 AMAQI
18th Jul 2026541 AMAQI
18th Jul 2026522 AMAQI
18th Jul 2026543 AMAQI
18th Jul 2026524 AMAQI

28°C21/37°C

18th Jul 2026545 AMAQI
18th Jul 2026526 AMAQI
18th Jul 2026527 AMAQI
18th Jul 2026508 AMAQI
18th Jul 2026519 AMAQI
18th Jul 20265010 AMAQI
18th Jul 20265211 AMAQI
18th Jul 20265112 PMAQI
18th Jul 2026511 PMAQI
18th Jul 2026502 PMAQI
18th Jul 2026493 PMAQI
18th Jul 2026514 PMAQI
18th Jul 2026545 PMAQI
18th Jul 2026566 PMAQI
18th Jul 2026667 PMAQI
18th Jul 2026928 PMAQI
18th Jul 20261249 PMAQI
18th Jul 202615510 PMAQI
18th Jul 202615611 PMAQI
19th Jul 202617412 AMAQI
19th Jul 20261801 AMAQI
19th Jul 20261882 AMAQI
19th Jul 20261703 AMAQI
19th Jul 20261654 AMAQI

27°C22/34°C

19th Jul 20261565 AMAQI
19th Jul 20261526 AMAQI
19th Jul 20261517 AMAQI
19th Jul 20261548 AMAQI
19th Jul 20261569 AMAQI
19th Jul 202615310 AMAQI
19th Jul 202613811 AMAQI
19th Jul 202614012 PMAQI
19th Jul 20261391 PMAQI
19th Jul 20261302 PMAQI
19th Jul 20261253 PMAQI
19th Jul 20261184 PMAQI
19th Jul 20261295 PMAQI
19th Jul 20261246 PMAQI
19th Jul 20261247 PMAQI
19th Jul 20261358 PMAQI
19th Jul 20261319 PMAQI
19th Jul 202614510 PMAQI
19th Jul 202614811 PMAQI
20th Jul 202614812 AMAQI
20th Jul 20261441 AMAQI
20th Jul 20261442 AMAQI
20th Jul 20261513 AMAQI
20th Jul 20261504 AMAQI

23°C17/31°C

20th Jul 20261485 AMAQI
20th Jul 20261466 AMAQI
20th Jul 20261497 AMAQI
20th Jul 20261398 AMAQI
20th Jul 20261469 AMAQI
20th Jul 202615010 AMAQI
20th Jul 202614811 AMAQI
20th Jul 202614612 PMAQI
20th Jul 20261471 PMAQI
20th Jul 20261452 PMAQI
20th Jul 20261443 PMAQI
20th Jul 20261384 PMAQI
20th Jul 20261355 PMAQI
20th Jul 20261446 PMAQI
20th Jul 20261357 PMAQI
20th Jul 20261508 PMAQI
20th Jul 20261349 PMAQI
20th Jul 202611811 PMAQI
21st Jul 202612012 AMAQI
21st Jul 20261051 AMAQI
21st Jul 2026932 AMAQI
21st Jul 2026733 AMAQI
21st Jul 2026654 AMAQI

22°C15/30°C

21st Jul 2026505 AMAQI
21st Jul 2026426 AMAQI
21st Jul 2026277 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026409 AMAQI
21st Jul 20264810 AMAQI
21st Jul 20265411 AMAQI
21st Jul 20265912 PMAQI
21st Jul 2026651 PMAQI
21st Jul 2026642 PMAQI
21st Jul 2026573 PMAQI
21st Jul 2026544 PMAQI
21st Jul 2026525 PMAQI
21st Jul 2026516 PMAQI
21st Jul 2026507 PMAQI
21st Jul 2026448 PMAQI
21st Jul 2026469 PMAQI
21st Jul 20263610 PMAQI
21st Jul 20263211 PMAQI
22nd Jul 20264612 AMAQI
22nd Jul 2026461 AMAQI
22nd Jul 2026462 AMAQI
22nd Jul 2026403 AMAQI
22nd Jul 2026404 AMAQI

25°C19/32°C

22nd Jul 2026525 AMAQI
22nd Jul 2026446 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026328 AMAQI
22nd Jul 2026299 AMAQI
22nd Jul 20262010 AMAQI
22nd Jul 20262211 AMAQI
22nd Jul 20262412 PMAQI
22nd Jul 2026201 PMAQI
22nd Jul 2026242 PMAQI
22nd Jul 2026203 PMAQI
22nd Jul 2026254 PMAQI
22nd Jul 2026255 PMAQI
22nd Jul 2026276 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026308 PMAQI
22nd Jul 2026679 PMAQI
22nd Jul 20264810 PMAQI
22nd Jul 20263311 PMAQI
23rd Jul 20264012 AMAQI
23rd Jul 2026581 AMAQI
23rd Jul 2026442 AMAQI
23rd Jul 2026423 AMAQI
23rd Jul 2026404 AMAQI

19°C14/24°C

23rd Jul 2026425 AMAQI
23rd Jul 2026386 AMAQI
23rd Jul 2026337 AMAQI
23rd Jul 2026538 AMAQI
23rd Jul 2026509 AMAQI
23rd Jul 20264210 AMAQI
23rd Jul 20264611 AMAQI
23rd Jul 20264412 PMAQI
23rd Jul 2026511 PMAQI
23rd Jul 2026422 PMAQI
23rd Jul 2026403 PMAQI
23rd Jul 2026364 PMAQI
23rd Jul 2026345 PMAQI
23rd Jul 2026236 PMAQI
23rd Jul 2026407 PMAQI
23rd Jul 2026308 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20263011 PMAQI
24th Jul 20264012 AMAQI
24th Jul 2026421 AMAQI
24th Jul 2026442 AMAQI
24th Jul 2026423 AMAQI
24th Jul 2026484 AMAQI

19°C12/26°C

24th Jul 2026515 AMAQI
24th Jul 2026496 AMAQI
24th Jul 2026517 AMAQI
24th Jul 2026528 AMAQI
24th Jul 2026539 AMAQI
24th Jul 20265110 AMAQI
24th Jul 20265111 AMAQI
24th Jul 20264412 PMAQI
24th Jul 2026461 PMAQI
24th Jul 2026462 PMAQI
24th Jul 2026443 PMAQI
24th Jul 2026424 PMAQI
24th Jul 2026445 PMAQI
24th Jul 2026426 PMAQI
24th Jul 2026427 PMAQI
24th Jul 2026428 PMAQI
24th Jul 2026429 PMAQI
24th Jul 20264210 PMAQI
24th Jul 20264611 PMAQI
25th Jul 20264212 AMAQI
25th Jul 2026441 AMAQI
25th Jul 2026482 AMAQI
25th Jul 2026483 AMAQI
25th Jul 2026544 AMAQI

21°C15/28°C

25th Jul 2026545 AMAQI
25th Jul 2026566 AMAQI
25th Jul 2026537 AMAQI
25th Jul 2026558 AMAQI
25th Jul 2026579 AMAQI
25th Jul 20265510 AMAQI
25th Jul 20265311 AMAQI
25th Jul 20265212 PMAQI
25th Jul 2026511 PMAQI
25th Jul 2026512 PMAQI
25th Jul 2026533 PMAQI
25th Jul 2026524 PMAQI
25th Jul 2026525 PMAQI
25th Jul 2026526 PMAQI
25th Jul 2026537 PMAQI
25th Jul 2026538 PMAQI
25th Jul 2026549 PMAQI
25th Jul 20265310 PMAQI
25th Jul 20265411 PMAQI
26th Jul 20265512 AMAQI
26th Jul 2026541 AMAQI
26th Jul 2026542 AMAQI
26th Jul 2026543 AMAQI
26th Jul 2026554 AMAQI

21°C15/29°C

26th Jul 2026555 AMAQI
26th Jul 2026546 AMAQI
26th Jul 2026537 AMAQI
26th Jul 2026548 AMAQI
26th Jul 2026559 AMAQI
26th Jul 20265410 AMAQI
26th Jul 20265311 AMAQI
26th Jul 20265412 PMAQI
26th Jul 2026561 PMAQI
26th Jul 2026582 PMAQI
26th Jul 2026583 PMAQI
26th Jul 2026624 PMAQI
26th Jul 2026625 PMAQI
26th Jul 2026626 PMAQI
26th Jul 2026587 PMAQI
26th Jul 2026608 PMAQI
26th Jul 2026629 PMAQI
26th Jul 20266010 PMAQI
26th Jul 20265711 PMAQI
27th Jul 20266212 AMAQI
27th Jul 2026601 AMAQI
27th Jul 2026592 AMAQI
27th Jul 2026603 AMAQI
27th Jul 2026584 AMAQI

26°C21/34°C

27th Jul 2026605 AMAQI
27th Jul 2026636 AMAQI
27th Jul 2026627 AMAQI
27th Jul 2026598 AMAQI
27th Jul 2026609 AMAQI
27th Jul 20266210 AMAQI
27th Jul 20266211 AMAQI
27th Jul 20266612 PMAQI
27th Jul 2026671 PMAQI
27th Jul 2026582 PMAQI
27th Jul 2026503 PMAQI
27th Jul 2026344 PMAQI
27th Jul 2026235 PMAQI
27th Jul 2026346 PMAQI
27th Jul 2026427 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026429 PMAQI
27th Jul 20265110 PMAQI
27th Jul 20265111 PMAQI
28th Jul 20265012 AMAQI
28th Jul 2026501 AMAQI
28th Jul 2026482 AMAQI
28th Jul 2026503 AMAQI
28th Jul 2026514 AMAQI

27°C22/36°C

28th Jul 2026465 AMAQI
28th Jul 2026546 AMAQI
28th Jul 2026547 AMAQI
28th Jul 2026508 AMAQI
28th Jul 2026499 AMAQI
28th Jul 20265310 AMAQI
28th Jul 20265511 AMAQI
28th Jul 20265712 PMAQI
28th Jul 2026561 PMAQI
28th Jul 2026552 PMAQI
28th Jul 2026563 PMAQI
28th Jul 2026544 PMAQI
28th Jul 2026505 PMAQI
28th Jul 2026426 PMAQI
28th Jul 2026427 PMAQI
28th Jul 2026428 PMAQI
28th Jul 2026299 PMAQI
28th Jul 20262710 PMAQI
28th Jul 20263811 PMAQI
29th Jul 20263412 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026382 AMAQI
29th Jul 2026303 AMAQI
29th Jul 2026244 AMAQI

23°C18/29°C

29th Jul 2026385 AMAQI
29th Jul 2026386 AMAQI
29th Jul 2026427 AMAQI
29th Jul 2026328 AMAQI
29th Jul 2026279 AMAQI
29th Jul 20263010 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20262712 PMAQI
29th Jul 2026311 PMAQI
29th Jul 2026382 PMAQI
29th Jul 2026283 PMAQI
29th Jul 2026344 PMAQI
29th Jul 2026275 PMAQI
29th Jul 2026386 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026308 PMAQI
29th Jul 2026469 PMAQI
29th Jul 20264510 PMAQI
29th Jul 20263211 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026312 AMAQI
30th Jul 2026473 AMAQI
30th Jul 2026514 AMAQI

22°C15/31°C

30th Jul 2026465 AMAQI
30th Jul 2026326 AMAQI
30th Jul 2026357 AMAQI
30th Jul 2026468 AMAQI
30th Jul 2026449 AMAQI
30th Jul 20264210 AMAQI
30th Jul 20264611 AMAQI
30th Jul 20263812 PMAQI
30th Jul 2026301 PMAQI
30th Jul 2026362 PMAQI
30th Jul 2026363 PMAQI
30th Jul 2026444 PMAQI
30th Jul 2026405 PMAQI
30th Jul 2026446 PMAQI
30th Jul 2026387 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026429 PMAQI
30th Jul 20265010 PMAQI
30th Jul 20265011 PMAQI
31st Jul 20265112 AMAQI
31st Jul 2026481 AMAQI
31st Jul 2026442 AMAQI
31st Jul 2026463 AMAQI
31st Jul 2026514 AMAQI

24°C15/33°C

31st Jul 2026685 AMAQI
31st Jul 2026556 AMAQI
31st Jul 2026557 AMAQI
31st Jul 2026408 AMAQI
31st Jul 2026449 AMAQI
31st Jul 20265210 AMAQI
31st Jul 20265211 AMAQI
31st Jul 20265312 PMAQI
31st Jul 2026531 PMAQI
31st Jul 2026492 PMAQI
31st Jul 2026483 PMAQI
31st Jul 2026464 PMAQI
31st Jul 2026465 PMAQI
31st Jul 2026406 PMAQI
31st Jul 2026317 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026239 PMAQI
31st Jul 20263810 PMAQI
31st Jul 20262111 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026332 AMAQI
1st Aug 2026233 AMAQI
1st Aug 2026364 AMAQI

22°C18/29°C

1st Aug 2026405 AMAQI
5 AM
1st Aug 2026406 AMAQI
1st Aug 2026427 AMAQI
1st Aug 2026448 AMAQI
1st Aug 2026449 AMAQI
1st Aug 20264410 AMAQI
1st Aug 20264011 AMAQI
1st Aug 20264012 PMAQI
12 PM
1st Aug 2026461 PMAQI
1st Aug 2026462 PMAQI
1st Aug 2026483 PMAQI
1st Aug 2026504 PMAQI
1st Aug 2026485 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026507 PMAQI
8 PM
12 AM
4 AM

21°C19/23°C

Day time
Avg. Highest Time
8 AM

66AQI

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

46AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 8 AM (Avg. 66), while the lowest AQI was between 6 PM to 6 PM (Avg. 46).
Night time
Avg. Highest Time
4 AM

63AQI

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

48AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 63), while the lowest AQI was between 9 PM to 9 PM (Avg. 48).

2026 Days Vs Air Quality

Elgin, Illinois, United States

2026

92%

192

6%

13

1%

3

0.4%

1

Total number of days with different AQI categories in last 213 days in 2026 (152 days remaining)

Good
192 Days
Moderate
13 Days
Poor
3 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 92%

Health Risk Level:

Very Low

In 2026, 92% of 213 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

Elgin, Illinois, United States

AQI levels in 2026

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

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
15AQI (US)
2nd January 2026
21AQI (US)
3rd January 2026
23AQI (US)
4th January 2026
26AQI (US)
5th January 2026
42AQI (US)
6th January 2026
69AQI (US)
7th January 2026
44AQI (US)
8th January 2026
44AQI (US)
9th January 2026
18AQI (US)
10th January 2026
29AQI (US)
11th January 2026
19AQI (US)
12th January 2026
19AQI (US)
13th January 2026
22AQI (US)
14th January 2026
12AQI (US)
15th January 2026
10AQI (US)
16th January 2026
18AQI (US)
17th January 2026
14AQI (US)
18th January 2026
14AQI (US)
19th January 2026
17AQI (US)
20th January 2026
22AQI (US)
21st January 2026
32AQI (US)
22nd January 2026
49AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
40AQI (US)
25th January 2026
49AQI (US)
26th January 2026
46AQI (US)
27th January 2026
32AQI (US)
28th January 2026
33AQI (US)
29th January 2026
42AQI (US)
30th January 2026
56AQI (US)
31st January 2026
42AQI (US)
1st February 2026
44AQI (US)
2nd February 2026
43AQI (US)
3rd February 2026
44AQI (US)
4th February 2026
40AQI (US)
5th February 2026
50AQI (US)
6th February 2026
42AQI (US)
7th February 2026
38AQI (US)
8th February 2026
42AQI (US)
9th February 2026
46AQI (US)
10th February 2026
39AQI (US)
11th February 2026
32AQI (US)
12th February 2026
29AQI (US)
13th February 2026
37AQI (US)
14th February 2026
41AQI (US)
15th February 2026
45AQI (US)
16th February 2026
41AQI (US)
17th February 2026
41AQI (US)
18th February 2026
40AQI (US)
19th February 2026
34AQI (US)
20th February 2026
35AQI (US)
21st February 2026
35AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
37AQI (US)
24th February 2026
36AQI (US)
25th February 2026
30AQI (US)
26th February 2026
29AQI (US)
27th February 2026
29AQI (US)
28th February 2026
33AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
55AQI (US)
3rd March 2026
32AQI (US)
4th March 2026
39AQI (US)
5th March 2026
37AQI (US)
6th March 2026
30AQI (US)
7th March 2026
36AQI (US)
8th March 2026
40AQI (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
26AQI (US)
16th March 2026
37AQI (US)
17th March 2026
34AQI (US)
18th March 2026
27AQI (US)
19th March 2026
38AQI (US)
20th March 2026
39AQI (US)
21st March 2026
33AQI (US)
22nd March 2026
32AQI (US)
23rd March 2026
39AQI (US)
24th March 2026
28AQI (US)
25th March 2026
28AQI (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
25AQI (US)
1st April 2026
30AQI (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
33AQI (US)
20th April 2026
28AQI (US)
21st April 2026
18AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
24th April 2026
22AQI (US)
25th April 2026
27AQI (US)
26th April 2026
34AQI (US)
27th April 2026
18AQI (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
37AQI (US)
6th May 2026
28AQI (US)
7th May 2026
23AQI (US)
8th May 2026
30AQI (US)
9th May 2026
10th May 2026
30AQI (US)
11th May 2026
29AQI (US)
12th May 2026
22AQI (US)
13th May 2026
26AQI (US)
14th May 2026
25AQI (US)
15th May 2026
34AQI (US)
16th May 2026
48AQI (US)
17th May 2026
45AQI (US)
18th May 2026
54AQI (US)
19th May 2026
51AQI (US)
20th May 2026
50AQI (US)
21st May 2026
43AQI (US)
22nd May 2026
41AQI (US)
23rd May 2026
40AQI (US)
24th May 2026
41AQI (US)
25th May 2026
40AQI (US)
26th May 2026
28AQI (US)
27th May 2026
21AQI (US)
28th May 2026
16AQI (US)
29th May 2026
21AQI (US)
30th May 2026
24AQI (US)
31st May 2026
26AQI (US)
1st June 2026
30AQI (US)
2nd June 2026
19AQI (US)
3rd June 2026
22AQI (US)
4th June 2026
25AQI (US)
5th June 2026
27AQI (US)
6th June 2026
18AQI (US)
7th June 2026
23AQI (US)
8th June 2026
23AQI (US)
9th June 2026
17AQI (US)
10th June 2026
20AQI (US)
11th June 2026
17AQI (US)
12th June 2026
22AQI (US)
13th June 2026
19AQI (US)
14th June 2026
19AQI (US)
15th June 2026
20AQI (US)
16th June 2026
20AQI (US)
17th June 2026
19AQI (US)
18th June 2026
23AQI (US)
19th June 2026
21AQI (US)
20th June 2026
21AQI (US)
21st June 2026
22AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
18AQI (US)
24th June 2026
18AQI (US)
25th June 2026
14AQI (US)
26th June 2026
22AQI (US)
27th June 2026
26AQI (US)
28th June 2026
24AQI (US)
29th June 2026
28AQI (US)
30th June 2026
50AQI (US)
1st July 2026
59AQI (US)
2nd July 2026
25AQI (US)
3rd July 2026
20AQI (US)
4th July 2026
31AQI (US)
5th July 2026
47AQI (US)
6th July 2026
39AQI (US)
7th July 2026
36AQI (US)
8th July 2026
38AQI (US)
9th July 2026
27AQI (US)
10th July 2026
27AQI (US)
11th July 2026
39AQI (US)
12th July 2026
41AQI (US)
13th July 2026
43AQI (US)
14th July 2026
34AQI (US)
15th July 2026
52AQI (US)
16th July 2026
104AQI (US)
17th July 2026
194AQI (US)
18th July 2026
66AQI (US)
19th July 2026
147AQI (US)
20th July 2026
143AQI (US)
21st July 2026
57AQI (US)
22nd July 2026
34AQI (US)
23rd July 2026
40AQI (US)
24th July 2026
46AQI (US)
25th July 2026
52AQI (US)
26th July 2026
57AQI (US)
27th July 2026
54AQI (US)
28th July 2026
48AQI (US)
29th July 2026
34AQI (US)
30th July 2026
41AQI (US)
31st July 2026
45AQI (US)
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

31AQI (US)

38AQI (US)

34AQI (US)

26AQI (US)

32AQI (US)

22AQI (US)

55AQI (US)

No. of days

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

202634AQI (US)

28
3
28
30
1
28
28
2
30
20
7
3
1
192
13
3
1

Highest AQI (US) recorded in

July

55AQI (US)

Lowest AQI (US) recorded in

June

22AQI (US)

202540AQI (US)

5
27
3
31
15
15
19
11
1
17
12
2
23
7
27
4
25
5
21
10
210
67
3

Highest AQI (US) recorded in

June

52AQI (US)

Lowest AQI (US) recorded in

May

28AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2025(Avg.)
40AQI (US)
Least Polluted Year Recorded
2026(Avg.)
34AQI (US)

Elgin's annual 2026 AQI (US) (34) shows an average percentage change of -15% (improved AQI (US)) compared to previous years: 2025 (40).