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Aurora, 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

Aurora, Illinois, United States

2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Oct 2025
63AQI
Lowest AQI recorded on
9th Oct 2025
23AQI


Same Day Analysis (17th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 33 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 17th Oct - 18th Oct 2025

Aurora, Illinois, United States

AQI
Day
Night
.

6 AM17th Oct 2025

6 PM

5 AM18th Oct 2025

Day time
Avg. Highest Time
3PM17th Oct

40AQI

Avg. Lowest Time
8AM17th Oct

23AQI

Night time
Avg. Highest Time
2AM18th Oct

45AQI

Avg. Lowest Time
6AM17th Oct

30AQI

In the last 24 hours,

Aurora's AQI reached its highest point of 45 at 2 AM during the Night, while the lowest point, 23, was recorded at 8 AM during the Day between 17th Oct and 18th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Aurora, Illinois, United States

SepOct
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
18th Sep 2025586 AMAQI
18th Sep 2025587 AMAQI
18th Sep 2025598 AMAQI
18th Sep 2025629 AMAQI
18th Sep 20256110 AMAQI
18th Sep 20256111 AMAQI
18th Sep 20255812 PMAQI
18th Sep 2025571 PMAQI
18th Sep 2025562 PMAQI
18th Sep 2025553 PMAQI
18th Sep 2025564 PMAQI
18th Sep 2025545 PMAQI
18th Sep 2025546 PMAQI
18th Sep 2025577 PMAQI
18th Sep 2025598 PMAQI
18th Sep 2025599 PMAQI
18th Sep 20255810 PMAQI
18th Sep 20255811 PMAQI
19th Sep 20255812 AMAQI
19th Sep 2025561 AMAQI
19th Sep 2025542 AMAQI
19th Sep 2025543 AMAQI
19th Sep 2025534 AMAQI
19th Sep 2025535 AMAQI

24°C16/33°C

19th Sep 2025546 AMAQI
19th Sep 2025547 AMAQI
19th Sep 2025568 AMAQI
19th Sep 2025569 AMAQI
19th Sep 20255710 AMAQI
19th Sep 20255811 AMAQI
19th Sep 20255912 PMAQI
19th Sep 2025581 PMAQI
19th Sep 2025582 PMAQI
19th Sep 2025583 PMAQI
19th Sep 2025574 PMAQI
19th Sep 2025555 PMAQI
19th Sep 2025556 PMAQI
19th Sep 2025567 PMAQI
19th Sep 2025578 PMAQI
19th Sep 2025569 PMAQI
19th Sep 20255610 PMAQI
19th Sep 20255611 PMAQI
20th Sep 20255612 AMAQI
20th Sep 2025561 AMAQI
20th Sep 2025572 AMAQI
20th Sep 2025563 AMAQI
20th Sep 2025494 AMAQI
20th Sep 2025445 AMAQI

24°C18/31°C

20th Sep 2025436 AMAQI
20th Sep 2025447 AMAQI
20th Sep 2025468 AMAQI
20th Sep 2025469 AMAQI
20th Sep 20254910 AMAQI
20th Sep 20255111 AMAQI
20th Sep 20255312 PMAQI
20th Sep 2025551 PMAQI
20th Sep 2025562 PMAQI
20th Sep 2025543 PMAQI
20th Sep 2025554 PMAQI
20th Sep 2025555 PMAQI
20th Sep 2025506 PMAQI
20th Sep 2025527 PMAQI
20th Sep 2025508 PMAQI
20th Sep 2025409 PMAQI
20th Sep 20254010 PMAQI
20th Sep 20253911 PMAQI
21st Sep 20254012 AMAQI
21st Sep 2025381 AMAQI
21st Sep 2025392 AMAQI
21st Sep 2025433 AMAQI
21st Sep 2025474 AMAQI
21st Sep 2025485 AMAQI

23°C19/28°C

21st Sep 2025486 AMAQI
21st Sep 2025477 AMAQI
21st Sep 2025478 AMAQI
21st Sep 2025469 AMAQI
21st Sep 20254610 AMAQI
21st Sep 20254511 AMAQI
21st Sep 20254812 PMAQI
21st Sep 2025511 PMAQI
21st Sep 2025522 PMAQI
21st Sep 2025533 PMAQI
21st Sep 2025524 PMAQI
21st Sep 2025525 PMAQI
21st Sep 2025496 PMAQI
21st Sep 2025477 PMAQI
21st Sep 2025468 PMAQI
21st Sep 2025399 PMAQI
21st Sep 20254010 PMAQI
21st Sep 20253911 PMAQI
22nd Sep 20254012 AMAQI
22nd Sep 2025351 AMAQI
22nd Sep 2025312 AMAQI
22nd Sep 2025363 AMAQI
22nd Sep 2025364 AMAQI
22nd Sep 2025385 AMAQI

23°C19/29°C

22nd Sep 2025386 AMAQI
22nd Sep 2025387 AMAQI
22nd Sep 2025398 AMAQI
22nd Sep 2025409 AMAQI
22nd Sep 20253710 AMAQI
22nd Sep 20253411 AMAQI
22nd Sep 20253212 PMAQI
22nd Sep 2025301 PMAQI
22nd Sep 2025302 PMAQI
22nd Sep 2025323 PMAQI
22nd Sep 2025334 PMAQI
22nd Sep 2025345 PMAQI
22nd Sep 2025356 PMAQI
22nd Sep 2025347 PMAQI
22nd Sep 2025368 PMAQI
22nd Sep 2025409 PMAQI
22nd Sep 20253910 PMAQI
22nd Sep 20254011 PMAQI
23rd Sep 20253912 AMAQI
23rd Sep 2025401 AMAQI
23rd Sep 2025422 AMAQI
23rd Sep 2025423 AMAQI
23rd Sep 2025404 AMAQI
23rd Sep 2025385 AMAQI

23°C17/29°C

23rd Sep 2025406 AMAQI
23rd Sep 2025407 AMAQI
23rd Sep 2025428 AMAQI
23rd Sep 2025389 AMAQI
23rd Sep 20254010 AMAQI
23rd Sep 20254011 AMAQI
23rd Sep 20254212 PMAQI
23rd Sep 2025431 PMAQI
23rd Sep 2025432 PMAQI
23rd Sep 2025403 PMAQI
23rd Sep 2025394 PMAQI
23rd Sep 2025395 PMAQI
23rd Sep 2025396 PMAQI
23rd Sep 2025417 PMAQI
23rd Sep 2025388 PMAQI
23rd Sep 2025339 PMAQI
23rd Sep 20253010 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252612 AMAQI
24th Sep 2025241 AMAQI
24th Sep 2025202 AMAQI
24th Sep 2025203 AMAQI
24th Sep 2025184 AMAQI
24th Sep 2025185 AMAQI

23°C18/31°C

24th Sep 2025206 AMAQI
24th Sep 2025227 AMAQI
24th Sep 2025228 AMAQI
24th Sep 2025249 AMAQI
24th Sep 20252510 AMAQI
24th Sep 20252511 AMAQI
24th Sep 20252512 PMAQI
24th Sep 2025241 PMAQI
24th Sep 2025252 PMAQI
24th Sep 2025273 PMAQI
24th Sep 2025284 PMAQI
24th Sep 2025265 PMAQI
24th Sep 2025276 PMAQI
24th Sep 2025267 PMAQI
24th Sep 2025268 PMAQI
24th Sep 2025269 PMAQI
24th Sep 20252610 PMAQI
24th Sep 20252611 PMAQI
25th Sep 20252412 AMAQI
25th Sep 2025231 AMAQI
25th Sep 2025222 AMAQI
25th Sep 2025223 AMAQI
25th Sep 2025224 AMAQI
25th Sep 2025225 AMAQI

19°C15/24°C

25th Sep 2025246 AMAQI
25th Sep 2025227 AMAQI
25th Sep 2025228 AMAQI
25th Sep 2025229 AMAQI
25th Sep 20252210 AMAQI
25th Sep 20252211 AMAQI
25th Sep 20252212 PMAQI
25th Sep 2025251 PMAQI
25th Sep 2025282 PMAQI
25th Sep 2025293 PMAQI
25th Sep 2025304 PMAQI
25th Sep 2025315 PMAQI
25th Sep 2025316 PMAQI
25th Sep 2025317 PMAQI
25th Sep 2025328 PMAQI
25th Sep 2025309 PMAQI
25th Sep 20252810 PMAQI
25th Sep 20252811 PMAQI
26th Sep 20252512 AMAQI
26th Sep 2025221 AMAQI
26th Sep 2025252 AMAQI
26th Sep 2025303 AMAQI
26th Sep 2025344 AMAQI
26th Sep 2025335 AMAQI

19°C13/26°C

26th Sep 2025346 AMAQI
26th Sep 2025347 AMAQI
26th Sep 2025348 AMAQI
26th Sep 2025359 AMAQI
26th Sep 20252810 AMAQI
26th Sep 20252111 AMAQI
26th Sep 20252412 PMAQI
26th Sep 2025291 PMAQI
26th Sep 2025332 PMAQI
26th Sep 2025373 PMAQI
26th Sep 2025394 PMAQI
26th Sep 2025405 PMAQI
26th Sep 2025406 PMAQI
26th Sep 2025397 PMAQI
26th Sep 2025398 PMAQI
26th Sep 2025399 PMAQI
26th Sep 20254010 PMAQI
26th Sep 20254411 PMAQI
27th Sep 20254412 AMAQI
27th Sep 2025421 AMAQI
27th Sep 2025392 AMAQI
27th Sep 2025373 AMAQI
27th Sep 2025354 AMAQI
27th Sep 2025395 AMAQI

21°C13/32°C

27th Sep 2025396 AMAQI
27th Sep 2025387 AMAQI
27th Sep 2025458 AMAQI
27th Sep 2025539 AMAQI
27th Sep 20253910 AMAQI
27th Sep 20253911 AMAQI
27th Sep 20253912 PMAQI
27th Sep 2025391 PMAQI
27th Sep 2025372 PMAQI
27th Sep 2025333 PMAQI
27th Sep 2025334 PMAQI
27th Sep 2025335 PMAQI
27th Sep 2025336 PMAQI
27th Sep 2025337 PMAQI
27th Sep 2025368 PMAQI
27th Sep 2025469 PMAQI
27th Sep 20255410 PMAQI
27th Sep 20255411 PMAQI
28th Sep 20255512 AMAQI
28th Sep 2025581 AMAQI
28th Sep 2025572 AMAQI
28th Sep 2025563 AMAQI
28th Sep 2025534 AMAQI
28th Sep 2025545 AMAQI

23°C15/33°C

28th Sep 2025546 AMAQI
28th Sep 2025537 AMAQI
28th Sep 2025538 AMAQI
28th Sep 2025529 AMAQI
28th Sep 20254810 AMAQI
28th Sep 20254211 AMAQI
28th Sep 20253612 PMAQI
28th Sep 2025421 PMAQI
28th Sep 2025342 PMAQI
28th Sep 2025333 PMAQI
28th Sep 2025274 PMAQI
28th Sep 2025265 PMAQI
28th Sep 2025276 PMAQI
28th Sep 2025377 PMAQI
28th Sep 2025378 PMAQI
28th Sep 2025329 PMAQI
28th Sep 20253610 PMAQI
28th Sep 20252811 PMAQI
29th Sep 20252912 AMAQI
29th Sep 2025271 AMAQI
29th Sep 2025242 AMAQI
29th Sep 2025233 AMAQI
29th Sep 2025304 AMAQI
29th Sep 2025355 AMAQI

23°C15/31°C

29th Sep 2025376 AMAQI
29th Sep 2025407 AMAQI
29th Sep 2025248 AMAQI
29th Sep 2025299 AMAQI
29th Sep 20252510 AMAQI
29th Sep 20252911 AMAQI
29th Sep 20254012 PMAQI
29th Sep 2025501 PMAQI
29th Sep 2025452 PMAQI
29th Sep 2025303 PMAQI
29th Sep 2025274 PMAQI
29th Sep 2025305 PMAQI
29th Sep 2025326 PMAQI
29th Sep 2025457 PMAQI
29th Sep 2025528 PMAQI
29th Sep 2025589 PMAQI
29th Sep 20255410 PMAQI
29th Sep 20255011 PMAQI
30th Sep 20255512 AMAQI
30th Sep 2025571 AMAQI
30th Sep 2025482 AMAQI
30th Sep 2025503 AMAQI
30th Sep 2025524 AMAQI
30th Sep 2025505 AMAQI

23°C15/34°C

30th Sep 2025576 AMAQI
30th Sep 2025477 AMAQI
30th Sep 2025468 AMAQI
30th Sep 2025449 AMAQI
30th Sep 20254110 AMAQI
30th Sep 20253611 AMAQI
30th Sep 20254012 PMAQI
30th Sep 2025441 PMAQI
30th Sep 2025352 PMAQI
30th Sep 2025413 PMAQI
30th Sep 2025364 PMAQI
30th Sep 2025435 PMAQI
30th Sep 2025356 PMAQI
30th Sep 2025307 PMAQI
30th Sep 2025348 PMAQI
30th Sep 2025389 PMAQI
30th Sep 20253710 PMAQI
30th Sep 20254211 PMAQI
1st Oct 20253912 AMAQI
1st Oct 2025391 AMAQI
1st Oct 2025432 AMAQI
1st Oct 2025443 AMAQI
1st Oct 2025464 AMAQI
1st Oct 2025415 AMAQI

23°C16/32°C

1st Oct 2025326 AMAQI
1st Oct 2025347 AMAQI
1st Oct 2025368 AMAQI
1st Oct 2025369 AMAQI
1st Oct 20253510 AMAQI
1st Oct 20253811 AMAQI
1st Oct 20253912 PMAQI
1st Oct 2025471 PMAQI
1st Oct 2025482 PMAQI
1st Oct 2025513 PMAQI
1st Oct 2025514 PMAQI
1st Oct 2025505 PMAQI
1st Oct 2025516 PMAQI
1st Oct 2025537 PMAQI
1st Oct 2025518 PMAQI
1st Oct 2025499 PMAQI
1st Oct 20254810 PMAQI
1st Oct 20254611 PMAQI
2nd Oct 20254012 AMAQI
2nd Oct 2025481 AMAQI
2nd Oct 2025402 AMAQI
2nd Oct 2025243 AMAQI
2nd Oct 2025184 AMAQI
2nd Oct 2025165 AMAQI

21°C16/27°C

2nd Oct 2025146 AMAQI
2nd Oct 2025147 AMAQI
2nd Oct 2025218 AMAQI
2nd Oct 2025229 AMAQI
2nd Oct 20252710 AMAQI
2nd Oct 20252811 AMAQI
2nd Oct 20252812 PMAQI
2nd Oct 2025381 PMAQI
2nd Oct 2025422 PMAQI
2nd Oct 2025483 PMAQI
2nd Oct 2025534 PMAQI
2nd Oct 2025525 PMAQI
2nd Oct 2025556 PMAQI
2nd Oct 2025567 PMAQI
2nd Oct 2025538 PMAQI
2nd Oct 2025559 PMAQI
2nd Oct 20255510 PMAQI
2nd Oct 20255611 PMAQI
3rd Oct 20255612 AMAQI
3rd Oct 2025541 AMAQI
3rd Oct 2025532 AMAQI
3rd Oct 2025533 AMAQI
3rd Oct 2025494 AMAQI
3rd Oct 2025485 AMAQI

22°C14/32°C

3rd Oct 2025426 AMAQI
3rd Oct 2025557 AMAQI
3rd Oct 2025558 AMAQI
3rd Oct 2025559 AMAQI
3rd Oct 20255510 AMAQI
3rd Oct 20256011 AMAQI
3rd Oct 20256212 PMAQI
3rd Oct 2025641 PMAQI
3rd Oct 2025602 PMAQI
3rd Oct 2025623 PMAQI
3rd Oct 2025624 PMAQI
3rd Oct 2025605 PMAQI
3rd Oct 2025576 PMAQI
3rd Oct 2025597 PMAQI
3rd Oct 2025628 PMAQI
3rd Oct 2025689 PMAQI
3rd Oct 20257210 PMAQI
3rd Oct 20257311 PMAQI
4th Oct 20257212 AMAQI
4th Oct 2025701 AMAQI
4th Oct 2025642 AMAQI
4th Oct 2025643 AMAQI
4th Oct 2025644 AMAQI
4th Oct 2025665 AMAQI

24°C17/34°C

4th Oct 2025636 AMAQI
4th Oct 2025627 AMAQI
4th Oct 2025638 AMAQI
4th Oct 2025629 AMAQI
4th Oct 20256210 AMAQI
4th Oct 20256311 AMAQI
4th Oct 20256312 PMAQI
4th Oct 2025631 PMAQI
4th Oct 2025632 PMAQI
4th Oct 2025633 PMAQI
4th Oct 2025604 PMAQI
4th Oct 2025595 PMAQI
4th Oct 2025556 PMAQI
4th Oct 2025567 PMAQI
4th Oct 2025588 PMAQI
4th Oct 2025639 PMAQI
4th Oct 20256610 PMAQI
4th Oct 20256611 PMAQI
5th Oct 20256312 AMAQI
5th Oct 2025611 AMAQI
5th Oct 2025592 AMAQI
5th Oct 2025583 AMAQI
5th Oct 2025564 AMAQI
5th Oct 2025575 AMAQI

24°C16/33°C

5th Oct 2025546 AMAQI
5th Oct 2025557 AMAQI
5th Oct 2025558 AMAQI
5th Oct 2025559 AMAQI
5th Oct 20255410 AMAQI
5th Oct 20255211 AMAQI
5th Oct 20255412 PMAQI
5th Oct 2025481 PMAQI
5th Oct 2025492 PMAQI
5th Oct 2025403 PMAQI
5th Oct 2025284 PMAQI
5th Oct 2025385 PMAQI
5th Oct 2025276 PMAQI
5th Oct 2025327 PMAQI
5th Oct 2025378 PMAQI
5th Oct 2025439 PMAQI
5th Oct 20255210 PMAQI
5th Oct 20254811 PMAQI
6th Oct 20254512 AMAQI
6th Oct 2025381 AMAQI
6th Oct 2025392 AMAQI
6th Oct 2025323 AMAQI
6th Oct 2025304 AMAQI
6th Oct 2025255 AMAQI

24°C17/32°C

6th Oct 2025256 AMAQI
6th Oct 2025217 AMAQI
6th Oct 2025238 AMAQI
6th Oct 2025369 AMAQI
6th Oct 20254210 AMAQI
6th Oct 20253811 AMAQI
6th Oct 20253912 PMAQI

23°C17/29°C

7th Oct 2025346 AMAQI
7th Oct 2025417 AMAQI
7th Oct 2025198 AMAQI
7th Oct 2025249 AMAQI
7th Oct 20252710 AMAQI
7th Oct 20251611 AMAQI
7th Oct 20252412 PMAQI
7th Oct 2025261 PMAQI
7th Oct 2025312 PMAQI
7th Oct 2025253 PMAQI
7th Oct 2025174 PMAQI
7th Oct 2025195 PMAQI
7th Oct 2025166 PMAQI
7th Oct 2025147 PMAQI
7th Oct 2025148 PMAQI
7th Oct 2025339 PMAQI
7th Oct 20255610 PMAQI
7th Oct 20256611 PMAQI
8th Oct 20256912 AMAQI
8th Oct 2025601 AMAQI
8th Oct 2025652 AMAQI
8th Oct 2025663 AMAQI
8th Oct 2025624 AMAQI
8th Oct 2025265 AMAQI

16°C12/20°C

8th Oct 2025176 AMAQI
8th Oct 2025177 AMAQI
8th Oct 2025208 AMAQI
8th Oct 2025209 AMAQI
8th Oct 20251810 AMAQI
8th Oct 20252111 AMAQI
8th Oct 20252012 PMAQI
8th Oct 2025181 PMAQI
8th Oct 2025172 PMAQI
8th Oct 2025173 PMAQI
8th Oct 2025154 PMAQI
8th Oct 2025155 PMAQI
8th Oct 2025146 PMAQI
8th Oct 2025217 PMAQI
8th Oct 2025428 PMAQI
8th Oct 2025449 PMAQI
8th Oct 20254410 PMAQI
8th Oct 20254811 PMAQI
9th Oct 20252412 AMAQI
9th Oct 2025131 AMAQI
9th Oct 2025212 AMAQI
9th Oct 2025233 AMAQI
9th Oct 2025224 AMAQI
9th Oct 2025225 AMAQI

13°C8/19°C

9th Oct 2025206 AMAQI
9th Oct 2025147 AMAQI
9th Oct 2025128 AMAQI
9th Oct 2025129 AMAQI
9th Oct 20251510 AMAQI
9th Oct 20252111 AMAQI
9th Oct 20252412 PMAQI
9th Oct 2025201 PMAQI
9th Oct 2025192 PMAQI
9th Oct 2025333 PMAQI
9th Oct 2025304 PMAQI
9th Oct 2025215 PMAQI
9th Oct 2025126 PMAQI
9th Oct 2025167 PMAQI
9th Oct 2025268 PMAQI
9th Oct 2025419 PMAQI
9th Oct 20254410 PMAQI
9th Oct 20254211 PMAQI
10th Oct 20253812 AMAQI
10th Oct 2025431 AMAQI
10th Oct 2025212 AMAQI
10th Oct 2025153 AMAQI
10th Oct 2025174 AMAQI
10th Oct 2025175 AMAQI

13°C7/21°C

10th Oct 2025216 AMAQI
10th Oct 2025207 AMAQI
10th Oct 2025348 AMAQI
10th Oct 2025369 AMAQI
10th Oct 20253810 AMAQI
10th Oct 20253811 AMAQI
10th Oct 20253812 PMAQI
10th Oct 2025401 PMAQI
10th Oct 2025282 PMAQI
10th Oct 2025353 PMAQI
10th Oct 2025424 PMAQI
10th Oct 2025405 PMAQI
10th Oct 2025386 PMAQI
10th Oct 2025397 PMAQI
10th Oct 2025458 PMAQI
10th Oct 2025469 PMAQI
10th Oct 20254010 PMAQI
10th Oct 20254011 PMAQI
11th Oct 20254512 AMAQI
11th Oct 2025531 AMAQI
11th Oct 2025562 AMAQI
11th Oct 2025533 AMAQI
11th Oct 2025444 AMAQI
11th Oct 2025405 AMAQI

14°C8/20°C

11th Oct 2025256 AMAQI
11th Oct 2025247 AMAQI
11th Oct 2025238 AMAQI
11th Oct 2025179 AMAQI
11th Oct 20251310 AMAQI
11th Oct 20252311 AMAQI
11th Oct 20253412 PMAQI
11th Oct 2025181 PMAQI
11th Oct 2025152 PMAQI
11th Oct 2025123 PMAQI
11th Oct 2025234 PMAQI
11th Oct 2025255 PMAQI
11th Oct 2025136 PMAQI
11th Oct 2025157 PMAQI
11th Oct 2025368 PMAQI
11th Oct 2025459 PMAQI
11th Oct 20255010 PMAQI
11th Oct 20254811 PMAQI
12th Oct 20255312 AMAQI
12th Oct 2025421 AMAQI
12th Oct 2025282 AMAQI
12th Oct 2025233 AMAQI
12th Oct 2025224 AMAQI
12th Oct 2025225 AMAQI

15°C10/20°C

12th Oct 2025236 AMAQI
12th Oct 2025337 AMAQI
12th Oct 2025288 AMAQI
12th Oct 2025259 AMAQI
12th Oct 20251810 AMAQI
12th Oct 20251611 AMAQI
12th Oct 20252112 PMAQI
12th Oct 2025241 PMAQI
12th Oct 2025202 PMAQI
12th Oct 2025273 PMAQI
12th Oct 2025194 PMAQI
12th Oct 2025165 PMAQI
12th Oct 2025176 PMAQI
12th Oct 2025227 PMAQI
12th Oct 2025348 PMAQI
12th Oct 2025369 PMAQI
12th Oct 20256010 PMAQI
12th Oct 20256311 PMAQI
13th Oct 20255212 AMAQI
13th Oct 2025431 AMAQI
13th Oct 2025222 AMAQI
13th Oct 2025173 AMAQI
13th Oct 2025184 AMAQI
13th Oct 2025195 AMAQI

15°C8/23°C

13th Oct 2025266 AMAQI
13th Oct 2025227 AMAQI
13th Oct 2025358 AMAQI
13th Oct 2025399 AMAQI
13th Oct 20253810 AMAQI
13th Oct 20254511 AMAQI
13th Oct 20254712 PMAQI
13th Oct 2025491 PMAQI
13th Oct 2025452 PMAQI
13th Oct 2025443 PMAQI
13th Oct 2025444 PMAQI
13th Oct 2025525 PMAQI
13th Oct 2025526 PMAQI
13th Oct 2025557 PMAQI
13th Oct 2025548 PMAQI
13th Oct 2025559 PMAQI
13th Oct 20255610 PMAQI
13th Oct 20255511 PMAQI
14th Oct 20255612 AMAQI
14th Oct 2025561 AMAQI
14th Oct 2025562 AMAQI
14th Oct 2025573 AMAQI
14th Oct 2025594 AMAQI
14th Oct 2025585 AMAQI

18°C13/24°C

14th Oct 2025626 AMAQI
14th Oct 2025647 AMAQI
14th Oct 2025618 AMAQI
14th Oct 2025629 AMAQI
14th Oct 20255710 AMAQI
14th Oct 20255711 AMAQI
14th Oct 20255412 PMAQI
14th Oct 2025541 PMAQI
14th Oct 2025572 PMAQI
14th Oct 2025603 PMAQI
14th Oct 2025544 PMAQI
14th Oct 2025525 PMAQI
14th Oct 2025526 PMAQI
14th Oct 2025467 PMAQI
14th Oct 2025468 PMAQI
14th Oct 2025229 PMAQI
14th Oct 20252410 PMAQI
14th Oct 20252611 PMAQI
15th Oct 20251512 AMAQI
15th Oct 2025131 AMAQI
15th Oct 2025202 AMAQI
15th Oct 2025263 AMAQI
15th Oct 2025254 AMAQI
15th Oct 2025265 AMAQI

16°C14/22°C

15th Oct 2025226 AMAQI
15th Oct 2025237 AMAQI
15th Oct 2025218 AMAQI
15th Oct 2025229 AMAQI
15th Oct 20252310 AMAQI
15th Oct 20252711 AMAQI
15th Oct 20251712 PMAQI
15th Oct 2025241 PMAQI
15th Oct 2025502 PMAQI
15th Oct 2025493 PMAQI
15th Oct 2025454 PMAQI
15th Oct 2025535 PMAQI
15th Oct 2025576 PMAQI
15th Oct 2025547 PMAQI
15th Oct 2025438 PMAQI
15th Oct 2025359 PMAQI
15th Oct 20252010 PMAQI
15th Oct 20251611 PMAQI
16th Oct 20253512 AMAQI
16th Oct 2025401 AMAQI
16th Oct 2025412 AMAQI
16th Oct 2025503 AMAQI
16th Oct 2025524 AMAQI
16th Oct 2025505 AMAQI

15°C14/17°C

16th Oct 2025206 AMAQI
16th Oct 2025327 AMAQI
16th Oct 2025398 AMAQI
16th Oct 2025199 AMAQI
16th Oct 20251910 AMAQI
16th Oct 20252811 AMAQI
16th Oct 20253012 PMAQI
16th Oct 2025201 PMAQI
16th Oct 2025222 PMAQI
16th Oct 2025163 PMAQI
16th Oct 2025194 PMAQI
16th Oct 2025265 PMAQI
16th Oct 2025316 PMAQI
16th Oct 2025257 PMAQI
16th Oct 2025348 PMAQI
16th Oct 2025459 PMAQI
16th Oct 20254210 PMAQI
16th Oct 20253811 PMAQI
17th Oct 20253612 AMAQI
17th Oct 2025351 AMAQI
17th Oct 2025192 AMAQI
17th Oct 2025273 AMAQI
17th Oct 2025334 AMAQI
17th Oct 2025295 AMAQI

17°C13/24°C

17th Oct 2025306 AMAQI
17th Oct 2025297 AMAQI
17th Oct 2025238 AMAQI
17th Oct 2025259 AMAQI
17th Oct 20252610 AMAQI
17th Oct 20253911 AMAQI
17th Oct 20253912 PMAQI
17th Oct 2025321 PMAQI
17th Oct 2025382 PMAQI
17th Oct 2025403 PMAQI
17th Oct 2025354 PMAQI
17th Oct 2025375 PMAQI
17th Oct 2025406 PMAQI
17th Oct 2025407 PMAQI
17th Oct 2025448 PMAQI
17th Oct 2025449 PMAQI
17th Oct 20254210 PMAQI
17th Oct 20254011 PMAQI
18th Oct 20254012 AMAQI
18th Oct 2025411 AMAQI
18th Oct 2025452 AMAQI
18th Oct 2025453 AMAQI
18th Oct 2025444 AMAQI
18th Oct 2025445 AMAQI

19°C14/28°C

18th Oct 2025536 AMAQI
6 AM
18th Oct 2025587 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 6 PM

38AQI

13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM - 6 PM

38AQI

13 hours / Day
390 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 PM (Avg. 38), while the lowest AQI was between 6 AM to 6 PM (Avg. 38).
Night time
Avg. Highest Time
10 PM - 11 PM

45AQI

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

39AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 45), while the lowest AQI was between 5 AM to 7 PM (Avg. 39).

2025 Days Vs Air Quality

Aurora, Illinois, United States

2025

73%

149

26%

54

0.9%

2

Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)

Good
149 Days
Moderate
54 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 73%

Health Risk Level:

Low

In 2025, 73% of 291 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

Aurora, 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
2nd January 2025
3rd January 2025
4th January 2025
5th January 2025
6th January 2025
7th January 2025
8th January 2025
9th January 2025
10th January 2025
11th January 2025
12th January 2025
13th January 2025
14th January 2025
15th January 2025
16th January 2025
17th January 2025
18th January 2025
19th January 2025
20th January 2025
21st January 2025
22nd January 2025
23rd January 2025
24th January 2025
25th January 2025
26th January 2025
27th January 2025
28th January 2025
29th January 2025
30th January 2025
31st January 2025
1st February 2025
2nd February 2025
3rd February 2025
4th February 2025
5th February 2025
6th February 2025
7th February 2025
8th February 2025
9th February 2025
10th February 2025
11th February 2025
12th February 2025
13th February 2025
14th February 2025
15th February 2025
16th February 2025
17th February 2025
18th February 2025
19th February 2025
20th February 2025
21st February 2025
22nd February 2025
23rd February 2025
24th February 2025
25th February 2025
26th February 2025
27th February 2025
28th February 2025
1st March 2025
2nd March 2025
3rd March 2025
4th March 2025
5th March 2025
6th March 2025
7th March 2025
8th March 2025
9th March 2025
10th March 2025
11th March 2025
12th March 2025
13th March 2025
14th March 2025
15th March 2025
16th March 2025
17th March 2025
18th March 2025
19th March 2025
20th March 2025
21st March 2025
22nd March 2025
23rd March 2025
24th March 2025
25th March 2025
26th March 2025
27th March 2025
47AQI
28th March 2025
43AQI
29th March 2025
37AQI
30th March 2025
33AQI
31st March 2025
18AQI
1st April 2025
27AQI
2nd April 2025
35AQI
3rd April 2025
27AQI
4th April 2025
30AQI
5th April 2025
22AQI
6th April 2025
24AQI
7th April 2025
27AQI
8th April 2025
20AQI
9th April 2025
35AQI
10th April 2025
53AQI
11th April 2025
49AQI
12th April 2025
51AQI
13th April 2025
39AQI
14th April 2025
35AQI
15th April 2025
21AQI
16th April 2025
26AQI
17th April 2025
38AQI
18th April 2025
51AQI
19th April 2025
40AQI
20th April 2025
44AQI
21st April 2025
20AQI
22nd April 2025
32AQI
23rd April 2025
26AQI
24th April 2025
44AQI
25th April 2025
28AQI
26th April 2025
18AQI
27th April 2025
28AQI
28th April 2025
36AQI
29th April 2025
33AQI
30th April 2025
24AQI
1st May 2025
33AQI
2nd May 2025
40AQI
3rd May 2025
17AQI
4th May 2025
18AQI
5th May 2025
23AQI
6th May 2025
35AQI
7th May 2025
41AQI
8th May 2025
20AQI
9th May 2025
24AQI
10th May 2025
36AQI
11th May 2025
25AQI
12th May 2025
38AQI
13th May 2025
36AQI
14th May 2025
42AQI
15th May 2025
51AQI
16th May 2025
36AQI
17th May 2025
24AQI
18th May 2025
22AQI
19th May 2025
20AQI
20th May 2025
26AQI
21st May 2025
20AQI
22nd May 2025
15AQI
23rd May 2025
22AQI
24th May 2025
22AQI
25th May 2025
20AQI
26th May 2025
24AQI
27th May 2025
25AQI
28th May 2025
29AQI
29th May 2025
36AQI
30th May 2025
42AQI
31st May 2025
44AQI
1st June 2025
42AQI
2nd June 2025
43AQI
3rd June 2025
57AQI
4th June 2025
55AQI
5th June 2025
83AQI
6th June 2025
76AQI
7th June 2025
80AQI
8th June 2025
74AQI
9th June 2025
69AQI
10th June 2025
61AQI
11th June 2025
73AQI
12th June 2025
80AQI
13th June 2025
77AQI
14th June 2025
66AQI
15th June 2025
56AQI
16th June 2025
56AQI
17th June 2025
44AQI
18th June 2025
30AQI
19th June 2025
28AQI
20th June 2025
37AQI
21st June 2025
40AQI
22nd June 2025
45AQI
23rd June 2025
56AQI
24th June 2025
39AQI
25th June 2025
33AQI
26th June 2025
46AQI
27th June 2025
30AQI
28th June 2025
24AQI
29th June 2025
38AQI
30th June 2025
30AQI
1st July 2025
32AQI
2nd July 2025
53AQI
3rd July 2025
51AQI
4th July 2025
52AQI
5th July 2025
67AQI
6th July 2025
46AQI
7th July 2025
54AQI
8th July 2025
66AQI
9th July 2025
48AQI
10th July 2025
47AQI
11th July 2025
36AQI
12th July 2025
28AQI
13th July 2025
57AQI
14th July 2025
72AQI
15th July 2025
73AQI
16th July 2025
43AQI
17th July 2025
26AQI
18th July 2025
22AQI
19th July 2025
30AQI
20th July 2025
26AQI
21st July 2025
64AQI
22nd July 2025
70AQI
23rd July 2025
63AQI
24th July 2025
52AQI
25th July 2025
32AQI
26th July 2025
26AQI
27th July 2025
31AQI
28th July 2025
37AQI
29th July 2025
40AQI
30th July 2025
48AQI
31st July 2025
119AQI
1st August 2025
110AQI
2nd August 2025
94AQI
3rd August 2025
90AQI
4th August 2025
87AQI
5th August 2025
75AQI
6th August 2025
90AQI
7th August 2025
60AQI
8th August 2025
56AQI
9th August 2025
56AQI
10th August 2025
51AQI
11th August 2025
41AQI
12th August 2025
35AQI
13th August 2025
49AQI
14th August 2025
62AQI
15th August 2025
69AQI
16th August 2025
50AQI
17th August 2025
43AQI
18th August 2025
38AQI
19th August 2025
22AQI
20th August 2025
19AQI
21st August 2025
19AQI
22nd August 2025
28AQI
23rd August 2025
32AQI
24th August 2025
22AQI
25th August 2025
18AQI
26th August 2025
24AQI
27th August 2025
33AQI
28th August 2025
29AQI
29th August 2025
22AQI
30th August 2025
24AQI
31st August 2025
34AQI
1st September 2025
39AQI
2nd September 2025
38AQI
3rd September 2025
43AQI
4th September 2025
47AQI
5th September 2025
41AQI
6th September 2025
20AQI
7th September 2025
24AQI
8th September 2025
34AQI
9th September 2025
29AQI
10th September 2025
43AQI
11th September 2025
49AQI
12th September 2025
47AQI
13th September 2025
56AQI
14th September 2025
61AQI
15th September 2025
54AQI
16th September 2025
55AQI
17th September 2025
55AQI
18th September 2025
58AQI
19th September 2025
56AQI
20th September 2025
50AQI
21st September 2025
45AQI
22nd September 2025
36AQI
23rd September 2025
39AQI
24th September 2025
24AQI
25th September 2025
26AQI
26th September 2025
33AQI
27th September 2025
40AQI
28th September 2025
43AQI
29th September 2025
37AQI
30th September 2025
43AQI
1st October 2025
44AQI
2nd October 2025
39AQI
3rd October 2025
58AQI
4th October 2025
63AQI
5th October 2025
51AQI
6th October 2025
34AQI
7th October 2025
27AQI
8th October 2025
36AQI
9th October 2025
23AQI
10th October 2025
33AQI
11th October 2025
34AQI
12th October 2025
29AQI
13th October 2025
41AQI
14th October 2025
51AQI
15th October 2025
30AQI
16th October 2025
34AQI
17th October 2025
33AQI
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

36AQI

33AQI

29AQI

52AQI

49AQI

48AQI

42AQI

39AQI


No. of days

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

202542AQI

5
27
3
30
1
15
15
17
13
1
19
11
1
23
7
13
4
149
54
2

Highest AQI recorded in

June

52AQI


Lowest AQI recorded in

May

29AQI


Most & Least Polluted Years Over the Last 1 Years

Most Polluted Year Recorded
2025(Avg.)
42AQI
Least Polluted Year Recorded
2025(Avg.)
42AQI


Aurora's annual 2025 AQI (42) shows an average percentage change of NaN% (improved AQI) compared to previous years: .