Ashburn, Chicago, 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
Ashburn, Chicago, Illinois, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Oct 2025
62AQILowest AQI recorded on
22nd Oct 2025
12AQISame Day Analysis (28th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 27 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 28th Oct - 29th Oct 2025
Ashburn, Chicago, Illinois, United States
AQI
Day
Night
.
7 AM28th Oct 2025
6 PM
6 AM29th Oct 2025
Day time
Avg. Highest Time
2PM28th Oct
44AQI
Avg. Lowest Time
8AM28th Oct
22AQI
Night time
Avg. Highest Time
6PM28th Oct
44AQI
Avg. Lowest Time
2AM29th Oct
22AQI
In the last 24 hours,
Ashburn's AQI reached its highest point of 44 at 2 PM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 28th Oct and 29th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ashburn, Chicago, Illinois, United States
SepOct
29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 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
Day
Night
29th Sep 2025307 AMAQI
29th Sep 2025318 AMAQI
29th Sep 2025369 AMAQI
29th Sep 20255310 AMAQI
29th Sep 20255411 AMAQI
29th Sep 20255912 PMAQI
29th Sep 2025491 PMAQI
29th Sep 2025492 PMAQI
29th Sep 2025453 PMAQI
29th Sep 2025504 PMAQI
29th Sep 2025535 PMAQI
29th Sep 2025536 PMAQI
29th Sep 2025527 PMAQI
29th Sep 2025558 PMAQI
29th Sep 2025559 PMAQI
29th Sep 20255610 PMAQI
29th Sep 20255811 PMAQI
30th Sep 20255712 AMAQI
30th Sep 2025601 AMAQI
30th Sep 2025552 AMAQI
30th Sep 2025543 AMAQI
30th Sep 2025644 AMAQI
30th Sep 2025615 AMAQI
30th Sep 2025546 AMAQI
23°C15/34°C
30th Sep 2025567 AMAQI
30th Sep 2025598 AMAQI
30th Sep 2025549 AMAQI
30th Sep 20255510 AMAQI
30th Sep 20255011 AMAQI
30th Sep 20254912 PMAQI
30th Sep 2025461 PMAQI
30th Sep 2025492 PMAQI
30th Sep 2025473 PMAQI
30th Sep 2025494 PMAQI
30th Sep 2025485 PMAQI
30th Sep 2025386 PMAQI
30th Sep 2025487 PMAQI
30th Sep 2025458 PMAQI
30th Sep 2025439 PMAQI
30th Sep 20255210 PMAQI
30th Sep 20254311 PMAQI
1st Oct 20254512 AMAQI
1st Oct 2025441 AMAQI
1st Oct 2025442 AMAQI
1st Oct 2025443 AMAQI
1st Oct 2025384 AMAQI
1st Oct 2025425 AMAQI
1st Oct 2025366 AMAQI
22°C16/30°C
1st Oct 2025417 AMAQI
1st Oct 2025458 AMAQI
1st Oct 2025499 AMAQI
1st Oct 20255310 AMAQI
1st Oct 20254911 AMAQI
1st Oct 20254812 PMAQI
1st Oct 2025501 PMAQI
1st Oct 2025462 PMAQI
1st Oct 2025513 PMAQI
1st Oct 2025484 PMAQI
1st Oct 2025505 PMAQI
1st Oct 2025486 PMAQI
1st Oct 2025437 PMAQI
1st Oct 2025468 PMAQI
1st Oct 2025399 PMAQI
1st Oct 20254410 PMAQI
1st Oct 20254811 PMAQI
2nd Oct 20254312 AMAQI
2nd Oct 2025421 AMAQI
2nd Oct 2025252 AMAQI
2nd Oct 2025193 AMAQI
2nd Oct 2025314 AMAQI
2nd Oct 2025395 AMAQI
2nd Oct 2025126 AMAQI
21°C15/28°C
2nd Oct 2025147 AMAQI
2nd Oct 2025268 AMAQI
2nd Oct 2025349 AMAQI
2nd Oct 20253410 AMAQI
2nd Oct 20253811 AMAQI
2nd Oct 20253612 PMAQI
2nd Oct 2025391 PMAQI
2nd Oct 2025402 PMAQI
2nd Oct 2025403 PMAQI
2nd Oct 2025454 PMAQI
2nd Oct 2025505 PMAQI
2nd Oct 2025576 PMAQI
2nd Oct 2025667 PMAQI
2nd Oct 2025568 PMAQI
2nd Oct 2025599 PMAQI
2nd Oct 20255110 PMAQI
2nd Oct 20255211 PMAQI
3rd Oct 20255712 AMAQI
3rd Oct 2025581 AMAQI
3rd Oct 2025552 AMAQI
3rd Oct 2025553 AMAQI
3rd Oct 2025534 AMAQI
3rd Oct 2025535 AMAQI
3rd Oct 2025456 AMAQI
22°C14/32°C
3rd Oct 2025577 AMAQI
3rd Oct 2025598 AMAQI
3rd Oct 2025619 AMAQI
3rd Oct 20256110 AMAQI
3rd Oct 20256011 AMAQI
3rd Oct 20256212 PMAQI
3rd Oct 2025581 PMAQI
3rd Oct 2025582 PMAQI
3rd Oct 2025613 PMAQI
3rd Oct 2025644 PMAQI
3rd Oct 2025635 PMAQI
3rd Oct 2025636 PMAQI
3rd Oct 2025607 PMAQI
3rd Oct 2025638 PMAQI
3rd Oct 2025659 PMAQI
3rd Oct 20257010 PMAQI
3rd Oct 20258711 PMAQI
4th Oct 20257712 AMAQI
4th Oct 2025661 AMAQI
4th Oct 2025642 AMAQI
4th Oct 2025653 AMAQI
4th Oct 2025624 AMAQI
4th Oct 2025615 AMAQI
4th Oct 2025646 AMAQI
25°C17/34°C
4th Oct 2025627 AMAQI
4th Oct 2025638 AMAQI
4th Oct 2025619 AMAQI
4th Oct 20256310 AMAQI
4th Oct 20256411 AMAQI
4th Oct 20256312 PMAQI
4th Oct 2025621 PMAQI
4th Oct 2025632 PMAQI
4th Oct 2025643 PMAQI
4th Oct 2025604 PMAQI
4th Oct 2025595 PMAQI
4th Oct 2025566 PMAQI
4th Oct 2025587 PMAQI
4th Oct 2025588 PMAQI
4th Oct 2025609 PMAQI
4th Oct 20255810 PMAQI
4th Oct 20256111 PMAQI
5th Oct 20256212 AMAQI
5th Oct 2025621 AMAQI
5th Oct 2025632 AMAQI
5th Oct 2025613 AMAQI
5th Oct 2025594 AMAQI
5th Oct 2025585 AMAQI
5th Oct 2025596 AMAQI
25°C19/34°C
5th Oct 2025597 AMAQI
5th Oct 2025578 AMAQI
5th Oct 2025569 AMAQI
5th Oct 20255710 AMAQI
5th Oct 20255711 AMAQI
5th Oct 20255712 PMAQI
5th Oct 2025531 PMAQI
5th Oct 2025492 PMAQI
5th Oct 2025443 PMAQI
5th Oct 2025434 PMAQI
5th Oct 2025465 PMAQI
5th Oct 2025456 PMAQI
5th Oct 2025467 PMAQI
5th Oct 2025498 PMAQI
5th Oct 2025519 PMAQI
5th Oct 20255210 PMAQI
5th Oct 20254511 PMAQI
6th Oct 20254812 AMAQI
6th Oct 2025461 AMAQI
6th Oct 2025452 AMAQI
6th Oct 2025413 AMAQI
6th Oct 2025364 AMAQI
6th Oct 2025395 AMAQI
6th Oct 2025386 AMAQI
24°C18/32°C
6th Oct 2025387 AMAQI
6th Oct 2025408 AMAQI
6th Oct 2025389 AMAQI
6th Oct 20254510 AMAQI
6th Oct 20254811 AMAQI
6th Oct 20253912 PMAQI
7th Oct 2025386 AMAQI
24°C19/30°C
7th Oct 2025177 AMAQI
7th Oct 2025158 AMAQI
7th Oct 2025239 AMAQI
7th Oct 20252610 AMAQI
7th Oct 20251611 AMAQI
7th Oct 20252412 PMAQI
7th Oct 2025271 PMAQI
7th Oct 2025322 PMAQI
7th Oct 2025293 PMAQI
7th Oct 2025194 PMAQI
7th Oct 2025205 PMAQI
7th Oct 2025166 PMAQI
7th Oct 2025187 PMAQI
7th Oct 2025158 PMAQI
7th Oct 2025189 PMAQI
7th Oct 20254610 PMAQI
7th Oct 20254011 PMAQI
8th Oct 20254512 AMAQI
8th Oct 2025561 AMAQI
8th Oct 2025552 AMAQI
8th Oct 2025493 AMAQI
8th Oct 2025434 AMAQI
8th Oct 2025385 AMAQI
8th Oct 2025456 AMAQI
17°C12/18°C
8th Oct 2025407 AMAQI
8th Oct 2025388 AMAQI
8th Oct 2025449 AMAQI
8th Oct 20254110 AMAQI
8th Oct 20254211 AMAQI
8th Oct 20252612 PMAQI
8th Oct 2025141 PMAQI
8th Oct 2025142 PMAQI
8th Oct 2025183 PMAQI
8th Oct 2025134 PMAQI
8th Oct 2025185 PMAQI
8th Oct 2025176 PMAQI
8th Oct 2025137 PMAQI
8th Oct 2025168 PMAQI
8th Oct 2025199 PMAQI
8th Oct 20251710 PMAQI
8th Oct 20253611 PMAQI
9th Oct 20253912 AMAQI
9th Oct 2025421 AMAQI
9th Oct 2025222 AMAQI
9th Oct 2025203 AMAQI
9th Oct 2025144 AMAQI
9th Oct 2025305 AMAQI
9th Oct 2025396 AMAQI
13°C9/17°C
9th Oct 2025537 AMAQI
9th Oct 2025508 AMAQI
9th Oct 2025449 AMAQI
9th Oct 20254510 AMAQI
9th Oct 20254711 AMAQI
9th Oct 20253512 PMAQI
9th Oct 2025351 PMAQI
9th Oct 2025402 PMAQI
9th Oct 2025253 PMAQI
9th Oct 2025234 PMAQI
9th Oct 2025225 PMAQI
9th Oct 2025146 PMAQI
9th Oct 2025237 PMAQI
9th Oct 2025328 PMAQI
9th Oct 2025309 PMAQI
9th Oct 20253810 PMAQI
9th Oct 20254311 PMAQI
10th Oct 20253912 AMAQI
10th Oct 2025391 AMAQI
10th Oct 2025382 AMAQI
10th Oct 2025503 AMAQI
10th Oct 2025424 AMAQI
10th Oct 2025415 AMAQI
10th Oct 2025576 AMAQI
12°C7/20°C
10th Oct 2025367 AMAQI
10th Oct 2025318 AMAQI
10th Oct 2025379 AMAQI
10th Oct 20254510 AMAQI
10th Oct 20254111 AMAQI
10th Oct 20254312 PMAQI
10th Oct 2025471 PMAQI
10th Oct 2025352 PMAQI
10th Oct 2025413 PMAQI
10th Oct 2025424 PMAQI
10th Oct 2025445 PMAQI
10th Oct 2025456 PMAQI
10th Oct 2025407 PMAQI
10th Oct 2025368 PMAQI
10th Oct 2025449 PMAQI
10th Oct 20255010 PMAQI
10th Oct 20255611 PMAQI
11th Oct 20257412 AMAQI
11th Oct 2025791 AMAQI
11th Oct 2025702 AMAQI
11th Oct 2025673 AMAQI
11th Oct 2025504 AMAQI
11th Oct 2025315 AMAQI
11th Oct 2025226 AMAQI
15°C8/22°C
11th Oct 2025257 AMAQI
11th Oct 2025158 AMAQI
11th Oct 2025169 AMAQI
11th Oct 20251410 AMAQI
11th Oct 20253711 AMAQI
11th Oct 20253712 PMAQI
11th Oct 2025171 PMAQI
11th Oct 2025152 PMAQI
11th Oct 2025143 PMAQI
11th Oct 2025124 PMAQI
11th Oct 2025125 PMAQI
11th Oct 2025166 PMAQI
11th Oct 2025157 PMAQI
11th Oct 2025188 PMAQI
11th Oct 2025209 PMAQI
11th Oct 20252210 PMAQI
11th Oct 20252311 PMAQI
12th Oct 20252312 AMAQI
12th Oct 2025231 AMAQI
12th Oct 2025232 AMAQI
12th Oct 2025223 AMAQI
12th Oct 2025244 AMAQI
12th Oct 2025235 AMAQI
12th Oct 2025426 AMAQI
15°C11/18°C
12th Oct 2025457 AMAQI
12th Oct 2025418 AMAQI
12th Oct 2025429 AMAQI
12th Oct 20253810 AMAQI
12th Oct 20253711 AMAQI
12th Oct 20253812 PMAQI
12th Oct 2025411 PMAQI
12th Oct 2025272 PMAQI
12th Oct 2025393 PMAQI
12th Oct 2025404 PMAQI
12th Oct 2025405 PMAQI
12th Oct 2025306 PMAQI
12th Oct 2025457 PMAQI
12th Oct 2025398 PMAQI
12th Oct 2025399 PMAQI
12th Oct 20253910 PMAQI
12th Oct 20253611 PMAQI
13th Oct 20254512 AMAQI
13th Oct 2025401 AMAQI
13th Oct 2025462 AMAQI
13th Oct 2025493 AMAQI
13th Oct 2025524 AMAQI
13th Oct 2025545 AMAQI
13th Oct 2025546 AMAQI
14°C8/22°C
13th Oct 2025547 AMAQI
13th Oct 2025538 AMAQI
13th Oct 2025559 AMAQI
13th Oct 20255610 AMAQI
13th Oct 20255811 AMAQI
13th Oct 20256312 PMAQI
13th Oct 2025611 PMAQI
13th Oct 2025582 PMAQI
13th Oct 2025543 PMAQI
13th Oct 2025534 PMAQI
13th Oct 2025525 PMAQI
13th Oct 2025496 PMAQI
13th Oct 2025537 PMAQI
13th Oct 2025548 PMAQI
13th Oct 2025539 PMAQI
13th Oct 20256010 PMAQI
13th Oct 20257611 PMAQI
14th Oct 20257112 AMAQI
14th Oct 2025691 AMAQI
14th Oct 2025722 AMAQI
14th Oct 2025703 AMAQI
14th Oct 2025734 AMAQI
14th Oct 2025765 AMAQI
14th Oct 2025746 AMAQI
17°C11/26°C
14th Oct 2025747 AMAQI
14th Oct 2025758 AMAQI
14th Oct 2025789 AMAQI
14th Oct 20257810 AMAQI
14th Oct 20257111 AMAQI
14th Oct 20256112 PMAQI
14th Oct 2025561 PMAQI
14th Oct 2025542 PMAQI
14th Oct 2025553 PMAQI
14th Oct 2025554 PMAQI
14th Oct 2025535 PMAQI
14th Oct 2025526 PMAQI
14th Oct 2025527 PMAQI
14th Oct 2025408 PMAQI
14th Oct 2025249 PMAQI
14th Oct 20252510 PMAQI
14th Oct 20252511 PMAQI
15th Oct 20251412 AMAQI
15th Oct 2025151 AMAQI
15th Oct 2025172 AMAQI
15th Oct 2025183 AMAQI
15th Oct 2025214 AMAQI
15th Oct 2025245 AMAQI
15th Oct 2025206 AMAQI
17°C13/20°C
15th Oct 2025237 AMAQI
15th Oct 2025178 AMAQI
15th Oct 2025209 AMAQI
15th Oct 20251310 AMAQI
15th Oct 20251511 AMAQI
15th Oct 20251512 PMAQI
15th Oct 2025261 PMAQI
15th Oct 2025402 PMAQI
15th Oct 2025483 PMAQI
15th Oct 2025544 PMAQI
15th Oct 2025555 PMAQI
15th Oct 2025446 PMAQI
15th Oct 2025267 PMAQI
15th Oct 2025218 PMAQI
15th Oct 2025189 PMAQI
15th Oct 20251810 PMAQI
15th Oct 20252111 PMAQI
16th Oct 20253512 AMAQI
16th Oct 2025331 AMAQI
16th Oct 2025262 AMAQI
16th Oct 2025123 AMAQI
16th Oct 2025174 AMAQI
16th Oct 2025165 AMAQI
16th Oct 2025146 AMAQI
15°C14/16°C
16th Oct 2025167 AMAQI
16th Oct 2025148 AMAQI
16th Oct 2025429 AMAQI
16th Oct 20254810 AMAQI
16th Oct 20254211 AMAQI
16th Oct 20253912 PMAQI
16th Oct 2025321 PMAQI
16th Oct 2025362 PMAQI
16th Oct 2025493 PMAQI
16th Oct 2025344 PMAQI
16th Oct 2025365 PMAQI
16th Oct 2025386 PMAQI
16th Oct 2025447 PMAQI
16th Oct 2025468 PMAQI
16th Oct 2025319 PMAQI
16th Oct 20253310 PMAQI
16th Oct 20253811 PMAQI
17th Oct 20254212 AMAQI
17th Oct 2025411 AMAQI
17th Oct 2025282 AMAQI
17th Oct 2025263 AMAQI
17th Oct 2025284 AMAQI
17th Oct 2025265 AMAQI
17th Oct 2025256 AMAQI
16°C11/23°C
17th Oct 2025307 AMAQI
17th Oct 2025398 AMAQI
17th Oct 2025429 AMAQI
17th Oct 20253810 AMAQI
17th Oct 20255211 AMAQI
17th Oct 20255512 PMAQI
17th Oct 2025401 PMAQI
17th Oct 2025402 PMAQI
17th Oct 2025473 PMAQI
17th Oct 2025464 PMAQI
17th Oct 2025475 PMAQI
17th Oct 2025436 PMAQI
17th Oct 2025397 PMAQI
17th Oct 2025468 PMAQI
17th Oct 2025429 PMAQI
17th Oct 20253910 PMAQI
17th Oct 20253811 PMAQI
18th Oct 20254012 AMAQI
18th Oct 2025491 AMAQI
18th Oct 2025492 AMAQI
18th Oct 2025473 AMAQI
18th Oct 2025424 AMAQI
18th Oct 2025435 AMAQI
18th Oct 2025486 AMAQI
19°C13/28°C
18th Oct 2025537 AMAQI
18th Oct 2025578 AMAQI
18th Oct 2025559 AMAQI
18th Oct 20255910 AMAQI
18th Oct 20256011 AMAQI
18th Oct 20256612 PMAQI
18th Oct 2025701 PMAQI
18th Oct 2025692 PMAQI
18th Oct 2025723 PMAQI
18th Oct 2025774 PMAQI
18th Oct 2025755 PMAQI
18th Oct 2025776 PMAQI
18th Oct 2025737 PMAQI
18th Oct 2025778 PMAQI
18th Oct 2025809 PMAQI
18th Oct 20256710 PMAQI
18th Oct 20255411 PMAQI
19th Oct 20253712 AMAQI
19th Oct 2025371 AMAQI
19th Oct 2025442 AMAQI
19th Oct 2025393 AMAQI
19th Oct 2025354 AMAQI
19th Oct 2025365 AMAQI
19th Oct 2025196 AMAQI
20°C17/26°C
19th Oct 2025287 AMAQI
19th Oct 2025188 AMAQI
19th Oct 2025129 AMAQI
19th Oct 20252110 AMAQI
19th Oct 20252911 AMAQI
19th Oct 20253012 PMAQI
19th Oct 2025291 PMAQI
19th Oct 2025242 PMAQI
19th Oct 2025243 PMAQI
19th Oct 2025244 PMAQI
19th Oct 2025265 PMAQI
19th Oct 2025246 PMAQI
19th Oct 2025227 PMAQI
19th Oct 2025238 PMAQI
19th Oct 2025229 PMAQI
19th Oct 20252410 PMAQI
19th Oct 20251811 PMAQI
20th Oct 20251612 AMAQI
20th Oct 2025171 AMAQI
20th Oct 2025182 AMAQI
20th Oct 2025173 AMAQI
20th Oct 2025174 AMAQI
20th Oct 2025165 AMAQI
20th Oct 2025176 AMAQI
12°C7/16°C
20th Oct 2025177 AMAQI
20th Oct 2025178 AMAQI
20th Oct 2025159 AMAQI
20th Oct 20254410 AMAQI
20th Oct 20257011 AMAQI
20th Oct 20253612 PMAQI
20th Oct 2025291 PMAQI
20th Oct 2025172 PMAQI
20th Oct 2025163 PMAQI
20th Oct 2025154 PMAQI
20th Oct 2025325 PMAQI
20th Oct 2025226 PMAQI
20th Oct 2025247 PMAQI
20th Oct 2025208 PMAQI
20th Oct 2025269 PMAQI
20th Oct 20251810 PMAQI
20th Oct 20251811 PMAQI
21st Oct 20251812 AMAQI
21st Oct 2025181 AMAQI
21st Oct 2025162 AMAQI
21st Oct 2025163 AMAQI
21st Oct 2025164 AMAQI
21st Oct 2025145 AMAQI
21st Oct 2025156 AMAQI
11°C5/18°C
21st Oct 2025187 AMAQI
21st Oct 2025248 AMAQI
21st Oct 2025279 AMAQI
21st Oct 20252810 AMAQI
21st Oct 20252811 AMAQI
21st Oct 20252812 PMAQI
21st Oct 2025231 PMAQI
21st Oct 2025222 PMAQI
21st Oct 2025183 PMAQI
21st Oct 2025174 PMAQI
21st Oct 2025175 PMAQI
21st Oct 2025176 PMAQI
21st Oct 2025177 PMAQI
21st Oct 2025178 PMAQI
21st Oct 2025229 PMAQI
21st Oct 20251810 PMAQI
21st Oct 20251211 PMAQI
22nd Oct 20251112 AMAQI
22nd Oct 2025111 AMAQI
22nd Oct 2025112 AMAQI
22nd Oct 2025113 AMAQI
22nd Oct 2025114 AMAQI
22nd Oct 2025115 AMAQI
22nd Oct 2025116 AMAQI
10°C7/14°C
22nd Oct 2025117 AMAQI
22nd Oct 2025118 AMAQI
22nd Oct 2025119 AMAQI
22nd Oct 20251110 AMAQI
22nd Oct 20251111 AMAQI
22nd Oct 20251612 PMAQI
22nd Oct 2025171 PMAQI
22nd Oct 2025172 PMAQI
22nd Oct 2025173 PMAQI
22nd Oct 2025124 PMAQI
22nd Oct 2025115 PMAQI
22nd Oct 2025116 PMAQI
22nd Oct 2025117 PMAQI
22nd Oct 2025118 PMAQI
22nd Oct 2025119 PMAQI
22nd Oct 20251110 PMAQI
22nd Oct 20251111 PMAQI
23rd Oct 20251112 AMAQI
23rd Oct 2025111 AMAQI
23rd Oct 2025112 AMAQI
23rd Oct 2025113 AMAQI
23rd Oct 2025114 AMAQI
23rd Oct 2025165 AMAQI
23rd Oct 2025176 AMAQI
8°C6/10°C
23rd Oct 2025177 AMAQI
23rd Oct 2025178 AMAQI
23rd Oct 2025229 AMAQI
23rd Oct 20252210 AMAQI
23rd Oct 20253211 AMAQI
23rd Oct 20252312 PMAQI
23rd Oct 2025221 PMAQI
23rd Oct 2025222 PMAQI
23rd Oct 2025223 PMAQI
23rd Oct 2025174 PMAQI
23rd Oct 2025175 PMAQI
23rd Oct 2025126 PMAQI
23rd Oct 2025117 PMAQI
23rd Oct 2025118 PMAQI
23rd Oct 2025169 PMAQI
23rd Oct 20251710 PMAQI
23rd Oct 20252211 PMAQI
24th Oct 20252212 AMAQI
24th Oct 2025271 AMAQI
24th Oct 2025282 AMAQI
24th Oct 2025323 AMAQI
24th Oct 2025334 AMAQI
24th Oct 2025335 AMAQI
24th Oct 2025336 AMAQI
7°C3/12°C
24th Oct 2025337 AMAQI
24th Oct 2025338 AMAQI
24th Oct 2025339 AMAQI
24th Oct 20254310 AMAQI
24th Oct 20254411 AMAQI
24th Oct 20254912 PMAQI
24th Oct 2025501 PMAQI
24th Oct 2025252 PMAQI
24th Oct 2025223 PMAQI
24th Oct 2025224 PMAQI
24th Oct 2025225 PMAQI
24th Oct 2025226 PMAQI
24th Oct 2025227 PMAQI
24th Oct 2025228 PMAQI
24th Oct 2025279 PMAQI
24th Oct 20254210 PMAQI
24th Oct 20255411 PMAQI
25th Oct 20255312 AMAQI
25th Oct 2025561 AMAQI
25th Oct 2025572 AMAQI
25th Oct 2025573 AMAQI
25th Oct 2025564 AMAQI
25th Oct 2025535 AMAQI
25th Oct 2025446 AMAQI
7°C1/15°C
25th Oct 2025427 AMAQI
25th Oct 2025298 AMAQI
25th Oct 2025289 AMAQI
25th Oct 20252810 AMAQI
25th Oct 20253311 AMAQI
25th Oct 20253312 PMAQI
25th Oct 2025441 PMAQI
25th Oct 2025492 PMAQI
25th Oct 2025503 PMAQI
25th Oct 2025504 PMAQI
25th Oct 2025505 PMAQI
25th Oct 2025536 PMAQI
25th Oct 2025537 PMAQI
25th Oct 2025458 PMAQI
25th Oct 2025449 PMAQI
25th Oct 20254410 PMAQI
25th Oct 20254911 PMAQI
26th Oct 20255512 AMAQI
26th Oct 2025561 AMAQI
26th Oct 2025572 AMAQI
26th Oct 2025553 AMAQI
26th Oct 2025554 AMAQI
26th Oct 2025555 AMAQI
26th Oct 2025576 AMAQI
8°C1/15°C
26th Oct 2025587 AMAQI
26th Oct 2025558 AMAQI
26th Oct 2025569 AMAQI
26th Oct 20255610 AMAQI
26th Oct 20255611 AMAQI
26th Oct 20255512 PMAQI
26th Oct 2025391 PMAQI
26th Oct 2025392 PMAQI
26th Oct 2025433 PMAQI
26th Oct 2025504 PMAQI
26th Oct 2025445 PMAQI
26th Oct 2025336 PMAQI
26th Oct 2025337 PMAQI
26th Oct 2025318 PMAQI
26th Oct 2025289 PMAQI
26th Oct 20252810 PMAQI
26th Oct 20252811 PMAQI
27th Oct 20252812 AMAQI
27th Oct 2025281 AMAQI
27th Oct 2025382 AMAQI
27th Oct 2025433 AMAQI
27th Oct 2025404 AMAQI
27th Oct 2025395 AMAQI
27th Oct 2025436 AMAQI
11°C5/17°C
27th Oct 2025537 AMAQI
27th Oct 2025498 AMAQI
27th Oct 2025409 AMAQI
27th Oct 20253910 AMAQI
27th Oct 20253411 AMAQI
27th Oct 20252812 PMAQI
27th Oct 2025231 PMAQI
27th Oct 2025222 PMAQI
27th Oct 2025273 PMAQI
27th Oct 2025284 PMAQI
27th Oct 2025285 PMAQI
27th Oct 2025286 PMAQI
27th Oct 2025337 PMAQI
27th Oct 2025288 PMAQI
27th Oct 2025289 PMAQI
27th Oct 20252810 PMAQI
27th Oct 20252311 PMAQI
28th Oct 20252212 AMAQI
28th Oct 2025221 AMAQI
28th Oct 2025222 AMAQI
28th Oct 2025183 AMAQI
28th Oct 2025174 AMAQI
28th Oct 2025225 AMAQI
28th Oct 2025226 AMAQI
10°C5/16°C
28th Oct 2025227 AMAQI
28th Oct 2025228 AMAQI
28th Oct 2025279 AMAQI
28th Oct 20252810 AMAQI
28th Oct 20253811 AMAQI
28th Oct 20253912 PMAQI
28th Oct 2025391 PMAQI
28th Oct 2025442 PMAQI
28th Oct 2025443 PMAQI
28th Oct 2025444 PMAQI
28th Oct 2025445 PMAQI
28th Oct 2025446 PMAQI
28th Oct 2025447 PMAQI
28th Oct 2025448 PMAQI
28th Oct 2025399 PMAQI
28th Oct 20252910 PMAQI
28th Oct 20252311 PMAQI
29th Oct 20252712 AMAQI
29th Oct 2025231 AMAQI
29th Oct 2025222 AMAQI
11°C6/16°C
7 AM
12 PM
6 PM
12 AM
6 AM
--°C/°C
Day time
Avg. Highest Time
11 AM
44AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 AM - 8 AM
37AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 11 AM (Avg. 44), while the lowest AQI was between 7 AM to 8 AM (Avg. 37).
Night time
Avg. Highest Time
12 AM - 1 AM
40AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM - 9 PM
37AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 40), while the lowest AQI was between 2 AM to 9 PM (Avg. 37).
2025 Days Vs Air Quality
Ashburn, Chicago, Illinois, United States
2025
73%
158
27%
58
Total number of days with different AQI categories in last 302 days in 2025 (63 days remaining)
Good
158 DaysModerate
58 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% of 302 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
Ashburn, Chicago, 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
44AQI
44AQI
28th March 2025
37AQI
37AQI
29th March 2025
32AQI
32AQI
30th March 2025
28AQI
28AQI
31st March 2025
18AQI
18AQI
1st April 2025
19AQI
19AQI
2nd April 2025
33AQI
33AQI
3rd April 2025
23AQI
23AQI
4th April 2025
26AQI
26AQI
5th April 2025
21AQI
21AQI
6th April 2025
20AQI
20AQI
7th April 2025
22AQI
22AQI
8th April 2025
17AQI
17AQI
9th April 2025
29AQI
29AQI
10th April 2025
46AQI
46AQI
11th April 2025
40AQI
40AQI
12th April 2025
52AQI
52AQI
13th April 2025
35AQI
35AQI
14th April 2025
29AQI
29AQI
15th April 2025
20AQI
20AQI
16th April 2025
23AQI
23AQI
17th April 2025
30AQI
30AQI
18th April 2025
47AQI
47AQI
19th April 2025
37AQI
37AQI
20th April 2025
38AQI
38AQI
21st April 2025
20AQI
20AQI
22nd April 2025
29AQI
29AQI
23rd April 2025
28AQI
28AQI
24th April 2025
47AQI
47AQI
25th April 2025
27AQI
27AQI
26th April 2025
18AQI
18AQI
27th April 2025
25AQI
25AQI
28th April 2025
31AQI
31AQI
29th April 2025
30AQI
30AQI
30th April 2025
20AQI
20AQI
1st May 2025
26AQI
26AQI
2nd May 2025
26AQI
26AQI
3rd May 2025
16AQI
16AQI
4th May 2025
16AQI
16AQI
5th May 2025
21AQI
21AQI
6th May 2025
34AQI
34AQI
7th May 2025
38AQI
38AQI
8th May 2025
18AQI
18AQI
9th May 2025
22AQI
22AQI
10th May 2025
30AQI
30AQI
11th May 2025
22AQI
22AQI
12th May 2025
35AQI
35AQI
13th May 2025
30AQI
30AQI
14th May 2025
32AQI
32AQI
15th May 2025
43AQI
43AQI
16th May 2025
33AQI
33AQI
17th May 2025
22AQI
22AQI
18th May 2025
22AQI
22AQI
19th May 2025
18AQI
18AQI
20th May 2025
21AQI
21AQI
21st May 2025
18AQI
18AQI
22nd May 2025
15AQI
15AQI
23rd May 2025
21AQI
21AQI
24th May 2025
17AQI
17AQI
25th May 2025
14AQI
14AQI
26th May 2025
20AQI
20AQI
27th May 2025
24AQI
24AQI
28th May 2025
31AQI
31AQI
29th May 2025
38AQI
38AQI
30th May 2025
45AQI
45AQI
31st May 2025
37AQI
37AQI
1st June 2025
36AQI
36AQI
2nd June 2025
37AQI
37AQI
3rd June 2025
54AQI
54AQI
4th June 2025
53AQI
53AQI
5th June 2025
100AQI
100AQI
6th June 2025
84AQI
84AQI
7th June 2025
76AQI
76AQI
8th June 2025
71AQI
71AQI
9th June 2025
66AQI
66AQI
10th June 2025
59AQI
59AQI
11th June 2025
68AQI
68AQI
12th June 2025
74AQI
74AQI
13th June 2025
74AQI
74AQI
14th June 2025
63AQI
63AQI
15th June 2025
48AQI
48AQI
16th June 2025
53AQI
53AQI
17th June 2025
44AQI
44AQI
18th June 2025
31AQI
31AQI
19th June 2025
27AQI
27AQI
20th June 2025
39AQI
39AQI
21st June 2025
35AQI
35AQI
22nd June 2025
39AQI
39AQI
23rd June 2025
54AQI
54AQI
24th June 2025
45AQI
45AQI
25th June 2025
30AQI
30AQI
26th June 2025
38AQI
38AQI
27th June 2025
32AQI
32AQI
28th June 2025
20AQI
20AQI
29th June 2025
30AQI
30AQI
30th June 2025
28AQI
28AQI
1st July 2025
31AQI
31AQI
2nd July 2025
51AQI
51AQI
3rd July 2025
51AQI
51AQI
4th July 2025
54AQI
54AQI
5th July 2025
67AQI
67AQI
6th July 2025
51AQI
51AQI
7th July 2025
50AQI
50AQI
8th July 2025
65AQI
65AQI
9th July 2025
47AQI
47AQI
10th July 2025
40AQI
40AQI
11th July 2025
39AQI
39AQI
12th July 2025
28AQI
28AQI
13th July 2025
56AQI
56AQI
14th July 2025
73AQI
73AQI
15th July 2025
74AQI
74AQI
16th July 2025
42AQI
42AQI
17th July 2025
30AQI
30AQI
18th July 2025
30AQI
30AQI
19th July 2025
32AQI
32AQI
20th July 2025
26AQI
26AQI
21st July 2025
69AQI
69AQI
22nd July 2025
80AQI
80AQI
23rd July 2025
61AQI
61AQI
24th July 2025
53AQI
53AQI
25th July 2025
31AQI
31AQI
26th July 2025
30AQI
30AQI
27th July 2025
29AQI
29AQI
28th July 2025
35AQI
35AQI
29th July 2025
38AQI
38AQI
30th July 2025
39AQI
39AQI
31st July 2025
82AQI
82AQI
1st August 2025
79AQI
79AQI
2nd August 2025
61AQI
61AQI
3rd August 2025
67AQI
67AQI
4th August 2025
82AQI
82AQI
5th August 2025
83AQI
83AQI
6th August 2025
90AQI
90AQI
7th August 2025
69AQI
69AQI
8th August 2025
44AQI
44AQI
9th August 2025
38AQI
38AQI
10th August 2025
31AQI
31AQI
11th August 2025
32AQI
32AQI
12th August 2025
30AQI
30AQI
13th August 2025
40AQI
40AQI
14th August 2025
66AQI
66AQI
15th August 2025
72AQI
72AQI
16th August 2025
58AQI
58AQI
17th August 2025
37AQI
37AQI
18th August 2025
37AQI
37AQI
19th August 2025
29AQI
29AQI
20th August 2025
20AQI
20AQI
21st August 2025
20AQI
20AQI
22nd August 2025
37AQI
37AQI
23rd August 2025
34AQI
34AQI
24th August 2025
23AQI
23AQI
25th August 2025
19AQI
19AQI
26th August 2025
31AQI
31AQI
27th August 2025
36AQI
36AQI
28th August 2025
35AQI
35AQI
29th August 2025
18AQI
18AQI
30th August 2025
26AQI
26AQI
31st August 2025
42AQI
42AQI
1st September 2025
41AQI
41AQI
2nd September 2025
46AQI
46AQI
3rd September 2025
50AQI
50AQI
4th September 2025
46AQI
46AQI
5th September 2025
43AQI
43AQI
6th September 2025
21AQI
21AQI
7th September 2025
30AQI
30AQI
8th September 2025
30AQI
30AQI
9th September 2025
35AQI
35AQI
10th September 2025
51AQI
51AQI
11th September 2025
52AQI
52AQI
12th September 2025
52AQI
52AQI
13th September 2025
58AQI
58AQI
14th September 2025
61AQI
61AQI
15th September 2025
56AQI
56AQI
16th September 2025
56AQI
56AQI
17th September 2025
57AQI
57AQI
18th September 2025
59AQI
59AQI
19th September 2025
59AQI
59AQI
20th September 2025
60AQI
60AQI
21st September 2025
57AQI
57AQI
22nd September 2025
39AQI
39AQI
23rd September 2025
45AQI
45AQI
24th September 2025
23AQI
23AQI
25th September 2025
25AQI
25AQI
26th September 2025
39AQI
39AQI
27th September 2025
43AQI
43AQI
28th September 2025
50AQI
50AQI
29th September 2025
45AQI
45AQI
30th September 2025
51AQI
51AQI
1st October 2025
45AQI
45AQI
2nd October 2025
41AQI
41AQI
3rd October 2025
60AQI
60AQI
4th October 2025
62AQI
62AQI
5th October 2025
56AQI
56AQI
6th October 2025
42AQI
42AQI
7th October 2025
24AQI
24AQI
8th October 2025
32AQI
32AQI
9th October 2025
32AQI
32AQI
10th October 2025
43AQI
43AQI
11th October 2025
32AQI
32AQI
12th October 2025
34AQI
34AQI
13th October 2025
54AQI
54AQI
14th October 2025
59AQI
59AQI
15th October 2025
24AQI
24AQI
16th October 2025
32AQI
32AQI
17th October 2025
38AQI
38AQI
18th October 2025
60AQI
60AQI
19th October 2025
28AQI
28AQI
20th October 2025
22AQI
22AQI
21st October 2025
19AQI
19AQI
22nd October 2025
12AQI
12AQI
23rd October 2025
16AQI
16AQI
24th October 2025
32AQI
32AQI
25th October 2025
47AQI
47AQI
26th October 2025
46AQI
46AQI
27th October 2025
33AQI
33AQI
28th October 2025
27AQI
27AQI
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
32AQI
29AQI
26AQI
50AQI
48AQI
45AQI
46AQI
38AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202540AQI
5
29
1
31
16
14
17
14
21
10
17
13
22
6
158
58
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
40AQILeast Polluted Year Recorded
2025(Avg.)
40AQIAshburn's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
