Illinois 1, West Union, 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
Illinois 1, West Union, Illinois, United States
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Aug 2025
88AQILowest AQI recorded on
21st Aug 2025
19AQISame Day Analysis (16th August):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 54 of Moderate air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Illinois 1, West Union, Illinois, United States
AQI
Day
Night
.
5 AM15th Aug 2026
8 PM
4 AM16th Aug 2026
Day time
Avg. Highest Time
7PM15th Aug
59AQI
Avg. Lowest Time
7AM15th Aug
42AQI
Night time
Avg. Highest Time
8PM15th Aug
58AQI
Avg. Lowest Time
5AM15th Aug
34AQI
In the last 24 hours,
Illinois 1's AQI reached its highest point of 59 at 7 PM during the Day, while the lowest point, 34, was recorded at 5 AM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Illinois 1, West Union, Illinois, United States
JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026275 AMAQI
18th Jul 2026346 AMAQI
18th Jul 2026307 AMAQI
18th Jul 2026468 AMAQI
18th Jul 2026409 AMAQI
18th Jul 20264210 AMAQI
18th Jul 20264911 AMAQI
18th Jul 20265312 PMAQI
18th Jul 2026551 PMAQI
18th Jul 2026532 PMAQI
18th Jul 2026513 PMAQI
18th Jul 2026524 PMAQI
18th Jul 2026525 PMAQI
18th Jul 2026466 PMAQI
18th Jul 2026447 PMAQI
18th Jul 2026448 PMAQI
18th Jul 2026469 PMAQI
18th Jul 20264010 PMAQI
18th Jul 20264811 PMAQI
19th Jul 20264012 AMAQI
19th Jul 2026381 AMAQI
19th Jul 2026402 AMAQI
19th Jul 2026583 AMAQI
19th Jul 2026534 AMAQI
28°C24/32°C
19th Jul 2026595 AMAQI
19th Jul 2026676 AMAQI
19th Jul 2026697 AMAQI
19th Jul 2026678 AMAQI
19th Jul 2026629 AMAQI
19th Jul 20264810 AMAQI
19th Jul 20266011 AMAQI
19th Jul 20265012 PMAQI
19th Jul 2026511 PMAQI
19th Jul 2026532 PMAQI
19th Jul 2026553 PMAQI
19th Jul 2026554 PMAQI
19th Jul 2026625 PMAQI
19th Jul 2026666 PMAQI
19th Jul 2026747 PMAQI
19th Jul 2026728 PMAQI
19th Jul 2026859 PMAQI
19th Jul 20268710 PMAQI
19th Jul 20269511 PMAQI
20th Jul 20269412 AMAQI
20th Jul 2026921 AMAQI
20th Jul 20261142 AMAQI
20th Jul 20261063 AMAQI
20th Jul 20261224 AMAQI
26°C22/32°C
20th Jul 20261245 AMAQI
20th Jul 20261066 AMAQI
20th Jul 20261047 AMAQI
20th Jul 20261058 AMAQI
20th Jul 20261089 AMAQI
20th Jul 202610810 AMAQI
20th Jul 202611111 AMAQI
20th Jul 20269712 PMAQI
20th Jul 2026831 PMAQI
20th Jul 2026822 PMAQI
20th Jul 2026713 PMAQI
20th Jul 2026764 PMAQI
20th Jul 2026785 PMAQI
20th Jul 2026886 PMAQI
20th Jul 2026837 PMAQI
20th Jul 2026948 PMAQI
20th Jul 2026849 PMAQI
20th Jul 20268411 PMAQI
21st Jul 20269012 AMAQI
21st Jul 2026841 AMAQI
21st Jul 2026942 AMAQI
21st Jul 2026803 AMAQI
21st Jul 2026804 AMAQI
26°C19/32°C
21st Jul 2026725 AMAQI
21st Jul 2026696 AMAQI
21st Jul 2026677 AMAQI
21st Jul 2026658 AMAQI
21st Jul 2026639 AMAQI
21st Jul 20265410 AMAQI
21st Jul 20265111 AMAQI
21st Jul 20265312 PMAQI
21st Jul 2026551 PMAQI
21st Jul 2026542 PMAQI
21st Jul 2026553 PMAQI
21st Jul 2026504 PMAQI
21st Jul 2026545 PMAQI
21st Jul 2026646 PMAQI
21st Jul 2026577 PMAQI
21st Jul 2026518 PMAQI
21st Jul 2026529 PMAQI
21st Jul 20265410 PMAQI
21st Jul 20265211 PMAQI
22nd Jul 20264012 AMAQI
22nd Jul 2026531 AMAQI
22nd Jul 2026522 AMAQI
22nd Jul 2026403 AMAQI
22nd Jul 2026254 AMAQI
27°C23/33°C
22nd Jul 2026505 AMAQI
22nd Jul 2026296 AMAQI
22nd Jul 2026277 AMAQI
22nd Jul 2026278 AMAQI
22nd Jul 2026409 AMAQI
22nd Jul 20265410 AMAQI
22nd Jul 20265011 AMAQI
22nd Jul 20265212 PMAQI
22nd Jul 2026461 PMAQI
22nd Jul 2026462 PMAQI
22nd Jul 2026463 PMAQI
22nd Jul 2026464 PMAQI
22nd Jul 2026465 PMAQI
22nd Jul 2026466 PMAQI
22nd Jul 2026467 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026299 PMAQI
22nd Jul 20264610 PMAQI
22nd Jul 20263411 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026302 AMAQI
23rd Jul 2026363 AMAQI
23rd Jul 2026274 AMAQI
22°C18/25°C
23rd Jul 2026465 AMAQI
23rd Jul 2026216 AMAQI
23rd Jul 2026387 AMAQI
23rd Jul 2026298 AMAQI
23rd Jul 2026369 AMAQI
23rd Jul 20264210 AMAQI
23rd Jul 20263311 AMAQI
23rd Jul 20263612 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026362 PMAQI
23rd Jul 2026333 PMAQI
23rd Jul 2026254 PMAQI
23rd Jul 2026365 PMAQI
23rd Jul 2026236 PMAQI
23rd Jul 2026407 PMAQI
23rd Jul 2026338 PMAQI
23rd Jul 2026239 PMAQI
23rd Jul 20262110 PMAQI
23rd Jul 20263311 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026381 AMAQI
24th Jul 2026302 AMAQI
24th Jul 2026253 AMAQI
24th Jul 2026344 AMAQI
20°C14/27°C
24th Jul 2026425 AMAQI
24th Jul 2026326 AMAQI
24th Jul 2026307 AMAQI
24th Jul 2026368 AMAQI
24th Jul 2026279 AMAQI
24th Jul 20263810 AMAQI
24th Jul 20262911 AMAQI
24th Jul 20262912 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026442 PMAQI
24th Jul 2026423 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026466 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026519 PMAQI
24th Jul 20262910 PMAQI
24th Jul 20264011 PMAQI
25th Jul 20264212 AMAQI
25th Jul 2026441 AMAQI
25th Jul 2026422 AMAQI
25th Jul 2026563 AMAQI
25th Jul 2026504 AMAQI
22°C14/28°C
25th Jul 2026525 AMAQI
25th Jul 2026276 AMAQI
25th Jul 2026507 AMAQI
25th Jul 2026508 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20264010 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026481 PMAQI
25th Jul 2026272 PMAQI
25th Jul 2026403 PMAQI
25th Jul 2026484 PMAQI
25th Jul 2026515 PMAQI
25th Jul 2026516 PMAQI
25th Jul 2026547 PMAQI
25th Jul 2026518 PMAQI
25th Jul 2026489 PMAQI
25th Jul 20265110 PMAQI
25th Jul 20265111 PMAQI
26th Jul 20265112 AMAQI
26th Jul 2026511 AMAQI
26th Jul 2026502 AMAQI
26th Jul 2026503 AMAQI
26th Jul 2026484 AMAQI
22°C19/25°C
26th Jul 2026515 AMAQI
26th Jul 2026516 AMAQI
26th Jul 2026517 AMAQI
26th Jul 2026488 AMAQI
26th Jul 2026509 AMAQI
26th Jul 20264610 AMAQI
26th Jul 20264411 AMAQI
26th Jul 20265412 PMAQI
26th Jul 2026511 PMAQI
26th Jul 2026532 PMAQI
26th Jul 2026523 PMAQI
26th Jul 2026524 PMAQI
26th Jul 2026535 PMAQI
26th Jul 2026536 PMAQI
26th Jul 2026567 PMAQI
26th Jul 2026608 PMAQI
26th Jul 2026649 PMAQI
26th Jul 20266910 PMAQI
26th Jul 20265711 PMAQI
27th Jul 20265112 AMAQI
27th Jul 2026421 AMAQI
27th Jul 2026442 AMAQI
27th Jul 2026463 AMAQI
27th Jul 2026424 AMAQI
26°C21/33°C
27th Jul 2026455 AMAQI
27th Jul 2026466 AMAQI
27th Jul 2026507 AMAQI
27th Jul 2026538 AMAQI
27th Jul 2026499 AMAQI
27th Jul 20264210 AMAQI
27th Jul 20264211 AMAQI
27th Jul 20264012 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026502 PMAQI
27th Jul 2026523 PMAQI
27th Jul 2026544 PMAQI
27th Jul 2026505 PMAQI
27th Jul 2026526 PMAQI
27th Jul 2026537 PMAQI
27th Jul 2026528 PMAQI
27th Jul 2026489 PMAQI
27th Jul 20264610 PMAQI
27th Jul 20264611 PMAQI
28th Jul 20264612 AMAQI
28th Jul 2026461 AMAQI
28th Jul 2026462 AMAQI
28th Jul 2026443 AMAQI
28th Jul 2026444 AMAQI
28°C22/36°C
28th Jul 2026425 AMAQI
28th Jul 2026446 AMAQI
28th Jul 2026487 AMAQI
28th Jul 2026488 AMAQI
28th Jul 2026519 AMAQI
28th Jul 20264910 AMAQI
28th Jul 20264811 AMAQI
28th Jul 20264812 PMAQI
28th Jul 2026501 PMAQI
28th Jul 2026512 PMAQI
28th Jul 2026513 PMAQI
28th Jul 2026504 PMAQI
28th Jul 2026495 PMAQI
28th Jul 2026466 PMAQI
28th Jul 2026487 PMAQI
28th Jul 2026518 PMAQI
28th Jul 2026489 PMAQI
28th Jul 20265210 PMAQI
28th Jul 20264911 PMAQI
29th Jul 20264612 AMAQI
29th Jul 2026461 AMAQI
29th Jul 2026442 AMAQI
29th Jul 2026463 AMAQI
29th Jul 2026404 AMAQI
27°C21/32°C
29th Jul 2026465 AMAQI
29th Jul 2026486 AMAQI
29th Jul 2026517 AMAQI
29th Jul 2026478 AMAQI
29th Jul 2026469 AMAQI
29th Jul 20264810 AMAQI
29th Jul 20264811 AMAQI
29th Jul 20265012 PMAQI
29th Jul 2026501 PMAQI
29th Jul 2026462 PMAQI
29th Jul 2026463 PMAQI
29th Jul 2026384 PMAQI
29th Jul 2026445 PMAQI
29th Jul 2026386 PMAQI
29th Jul 2026487 PMAQI
29th Jul 2026488 PMAQI
29th Jul 2026489 PMAQI
29th Jul 20264810 PMAQI
29th Jul 20264811 PMAQI
30th Jul 20264912 AMAQI
30th Jul 2026461 AMAQI
30th Jul 2026482 AMAQI
30th Jul 2026503 AMAQI
30th Jul 2026484 AMAQI
23°C16/31°C
30th Jul 2026485 AMAQI
30th Jul 2026486 AMAQI
30th Jul 2026467 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026449 AMAQI
30th Jul 20262710 AMAQI
30th Jul 20263611 AMAQI
30th Jul 20263612 PMAQI
30th Jul 2026331 PMAQI
30th Jul 2026252 PMAQI
30th Jul 2026253 PMAQI
30th Jul 2026324 PMAQI
30th Jul 2026345 PMAQI
30th Jul 2026236 PMAQI
30th Jul 2026217 PMAQI
30th Jul 2026258 PMAQI
30th Jul 2026339 PMAQI
30th Jul 20263010 PMAQI
30th Jul 20264011 PMAQI
31st Jul 20263412 AMAQI
31st Jul 2026441 AMAQI
31st Jul 2026342 AMAQI
31st Jul 2026323 AMAQI
31st Jul 2026344 AMAQI
24°C17/30°C
31st Jul 2026465 AMAQI
31st Jul 2026386 AMAQI
31st Jul 2026467 AMAQI
31st Jul 2026528 AMAQI
31st Jul 2026369 AMAQI
31st Jul 20264010 AMAQI
31st Jul 20262311 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026301 PMAQI
31st Jul 2026212 PMAQI
31st Jul 2026273 PMAQI
31st Jul 2026304 PMAQI
31st Jul 2026405 PMAQI
31st Jul 2026216 PMAQI
31st Jul 2026297 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20263610 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20264612 AMAQI
1st Aug 2026461 AMAQI
1st Aug 2026462 AMAQI
1st Aug 2026233 AMAQI
1st Aug 2026214 AMAQI
24°C17/30°C
1st Aug 2026445 AMAQI
1st Aug 2026346 AMAQI
1st Aug 2026427 AMAQI
1st Aug 2026408 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20263810 AMAQI
1st Aug 20264211 AMAQI
1st Aug 20264212 PMAQI
1st Aug 2026401 PMAQI
1st Aug 2026322 PMAQI
1st Aug 2026233 PMAQI
1st Aug 2026274 PMAQI
1st Aug 2026405 PMAQI
1st Aug 2026346 PMAQI
1st Aug 2026367 PMAQI
1st Aug 2026428 PMAQI
1st Aug 2026279 PMAQI
1st Aug 20263410 PMAQI
1st Aug 20263411 PMAQI
2nd Aug 20264212 AMAQI
2nd Aug 2026441 AMAQI
2nd Aug 2026422 AMAQI
2nd Aug 2026383 AMAQI
2nd Aug 2026314 AMAQI
22°C21/25°C
2nd Aug 2026325 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026407 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026469 AMAQI
2nd Aug 20264410 AMAQI
2nd Aug 20264611 AMAQI
2nd Aug 20264812 PMAQI
2nd Aug 2026481 PMAQI
2nd Aug 2026362 PMAQI
2nd Aug 2026363 PMAQI
2nd Aug 2026424 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026406 PMAQI
2nd Aug 2026427 PMAQI
2nd Aug 2026388 PMAQI
2nd Aug 2026469 PMAQI
2nd Aug 20264610 PMAQI
2nd Aug 20265011 PMAQI
3rd Aug 20264012 AMAQI
3rd Aug 2026381 AMAQI
3rd Aug 2026462 AMAQI
3rd Aug 2026463 AMAQI
3rd Aug 2026424 AMAQI
22°C20/27°C
3rd Aug 2026465 AMAQI
3rd Aug 2026446 AMAQI
3rd Aug 2026467 AMAQI
3rd Aug 2026488 AMAQI
3rd Aug 2026499 AMAQI
3rd Aug 20264210 AMAQI
3rd Aug 20264411 AMAQI
3rd Aug 20264412 PMAQI
3rd Aug 2026401 PMAQI
3rd Aug 2026442 PMAQI
3rd Aug 2026443 PMAQI
3rd Aug 2026444 PMAQI
3rd Aug 2026465 PMAQI
3rd Aug 2026486 PMAQI
3rd Aug 2026427 PMAQI
3rd Aug 2026218 PMAQI
3rd Aug 2026449 PMAQI
3rd Aug 20264810 PMAQI
3rd Aug 20265211 PMAQI
4th Aug 20264612 AMAQI
4th Aug 2026401 AMAQI
4th Aug 2026322 AMAQI
4th Aug 2026423 AMAQI
4th Aug 2026324 AMAQI
23°C17/30°C
4th Aug 2026295 AMAQI
4th Aug 2026366 AMAQI
4th Aug 2026447 AMAQI
4th Aug 2026478 AMAQI
4th Aug 2026509 AMAQI
4th Aug 20264810 AMAQI
4th Aug 20264611 AMAQI
4th Aug 20263412 PMAQI
4th Aug 2026271 PMAQI
4th Aug 2026232 PMAQI
4th Aug 2026383 PMAQI
4th Aug 2026424 PMAQI
4th Aug 2026335 PMAQI
4th Aug 2026216 PMAQI
4th Aug 2026407 PMAQI
4th Aug 2026508 PMAQI
4th Aug 2026409 PMAQI
4th Aug 20263810 PMAQI
4th Aug 20263311 PMAQI
5th Aug 20262512 AMAQI
5th Aug 2026381 AMAQI
5th Aug 2026402 AMAQI
5th Aug 2026403 AMAQI
5th Aug 2026384 AMAQI
24°C16/31°C
5th Aug 2026385 AMAQI
5th Aug 2026486 AMAQI
5th Aug 2026327 AMAQI
5th Aug 2026298 AMAQI
5th Aug 2026529 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262311 AMAQI
5th Aug 20264212 PMAQI
5th Aug 2026521 PMAQI
5th Aug 2026482 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026424 PMAQI
5th Aug 2026445 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026407 PMAQI
5th Aug 2026348 PMAQI
5th Aug 2026299 PMAQI
5th Aug 20264010 PMAQI
5th Aug 20265011 PMAQI
6th Aug 20263812 AMAQI
6th Aug 2026461 AMAQI
6th Aug 2026232 AMAQI
6th Aug 2026363 AMAQI
6th Aug 2026454 AMAQI
24°C16/32°C
6th Aug 2026295 AMAQI
6th Aug 2026276 AMAQI
6th Aug 2026547 AMAQI
6th Aug 2026408 AMAQI
6th Aug 2026509 AMAQI
6th Aug 20265310 AMAQI
6th Aug 20265411 AMAQI
6th Aug 20265612 PMAQI
6th Aug 2026511 PMAQI
6th Aug 2026502 PMAQI
6th Aug 2026503 PMAQI
6th Aug 2026444 PMAQI
6th Aug 2026425 PMAQI
6th Aug 2026406 PMAQI
6th Aug 2026427 PMAQI
6th Aug 2026428 PMAQI
6th Aug 2026449 PMAQI
6th Aug 20264410 PMAQI
6th Aug 20263811 PMAQI
7th Aug 20264212 AMAQI
7th Aug 2026421 AMAQI
7th Aug 2026302 AMAQI
7th Aug 2026423 AMAQI
7th Aug 2026384 AMAQI
24°C20/28°C
7th Aug 2026385 AMAQI
7th Aug 2026386 AMAQI
7th Aug 2026297 AMAQI
7th Aug 2026348 AMAQI
7th Aug 2026529 AMAQI
7th Aug 20263310 AMAQI
7th Aug 20263611 AMAQI
7th Aug 20265212 PMAQI
7th Aug 2026491 PMAQI
7th Aug 2026572 PMAQI
7th Aug 2026513 PMAQI
7th Aug 2026404 PMAQI
7th Aug 2026485 PMAQI
7th Aug 2026526 PMAQI
7th Aug 2026537 PMAQI
7th Aug 2026508 PMAQI
7th Aug 2026489 PMAQI
7th Aug 20264810 PMAQI
7th Aug 20264411 PMAQI
8th Aug 20264412 AMAQI
8th Aug 2026421 AMAQI
8th Aug 2026402 AMAQI
8th Aug 2026483 AMAQI
8th Aug 2026464 AMAQI
26°C19/32°C
8th Aug 2026465 AMAQI
8th Aug 2026426 AMAQI
8th Aug 2026447 AMAQI
8th Aug 2026408 AMAQI
8th Aug 2026489 AMAQI
8th Aug 20264910 AMAQI
8th Aug 20264011 AMAQI
8th Aug 20264812 PMAQI
8th Aug 2026461 PMAQI
8th Aug 2026482 PMAQI
8th Aug 2026483 PMAQI
8th Aug 2026504 PMAQI
8th Aug 2026585 PMAQI
8th Aug 2026566 PMAQI
8th Aug 2026537 PMAQI
8th Aug 2026488 PMAQI
8th Aug 2026429 PMAQI
8th Aug 20264010 PMAQI
8th Aug 20263811 PMAQI
9th Aug 20263812 AMAQI
9th Aug 2026461 AMAQI
9th Aug 2026442 AMAQI
9th Aug 2026423 AMAQI
9th Aug 2026384 AMAQI
28°C22/34°C
9th Aug 2026465 AMAQI
9th Aug 2026336 AMAQI
9th Aug 2026407 AMAQI
9th Aug 2026428 AMAQI
9th Aug 2026429 AMAQI
9th Aug 20264010 AMAQI
9th Aug 20263811 AMAQI
9th Aug 20263612 PMAQI
9th Aug 2026421 PMAQI
9th Aug 2026422 PMAQI
9th Aug 2026443 PMAQI
9th Aug 2026404 PMAQI
9th Aug 2026465 PMAQI
9th Aug 2026406 PMAQI
9th Aug 2026407 PMAQI
9th Aug 2026448 PMAQI
9th Aug 2026429 PMAQI
9th Aug 20263610 PMAQI
9th Aug 20264011 PMAQI
10th Aug 20263812 AMAQI
10th Aug 2026361 AMAQI
10th Aug 2026402 AMAQI
10th Aug 2026383 AMAQI
10th Aug 2026384 AMAQI
27°C21/33°C
10th Aug 2026385 AMAQI
10th Aug 2026386 AMAQI
10th Aug 2026387 AMAQI
10th Aug 2026408 AMAQI
10th Aug 2026449 AMAQI
10th Aug 20264410 AMAQI
10th Aug 20264211 AMAQI
10th Aug 20264012 PMAQI
10th Aug 2026401 PMAQI
10th Aug 2026442 PMAQI
10th Aug 2026443 PMAQI
10th Aug 2026444 PMAQI
10th Aug 2026425 PMAQI
10th Aug 2026466 PMAQI
10th Aug 2026427 PMAQI
10th Aug 2026448 PMAQI
10th Aug 2026539 PMAQI
10th Aug 20264610 PMAQI
10th Aug 20264611 PMAQI
11th Aug 20264612 AMAQI
11th Aug 2026441 AMAQI
11th Aug 2026442 AMAQI
11th Aug 2026443 AMAQI
11th Aug 2026444 AMAQI
29°C24/35°C
11th Aug 2026425 AMAQI
11th Aug 2026406 AMAQI
11th Aug 2026427 AMAQI
11th Aug 2026408 AMAQI
11th Aug 2026449 AMAQI
11th Aug 20264210 AMAQI
11th Aug 20264211 AMAQI
11th Aug 20264612 PMAQI
11th Aug 2026441 PMAQI
11th Aug 2026422 PMAQI
11th Aug 2026383 PMAQI
11th Aug 2026424 PMAQI
11th Aug 2026425 PMAQI
11th Aug 2026406 PMAQI
11th Aug 2026407 PMAQI
11th Aug 2026408 PMAQI
11th Aug 2026449 PMAQI
11th Aug 20264010 PMAQI
11th Aug 20264211 PMAQI
12th Aug 20262312 AMAQI
12th Aug 2026421 AMAQI
12th Aug 2026232 AMAQI
12th Aug 2026403 AMAQI
12th Aug 2026344 AMAQI
28°C22/35°C
12th Aug 2026385 AMAQI
12th Aug 2026406 AMAQI
12th Aug 2026407 AMAQI
12th Aug 2026388 AMAQI
12th Aug 2026509 AMAQI
12th Aug 20264010 AMAQI
12th Aug 20264011 AMAQI
12th Aug 20265212 PMAQI
12th Aug 2026381 PMAQI
12th Aug 2026382 PMAQI
12th Aug 2026233 PMAQI
12th Aug 2026464 PMAQI
12th Aug 2026235 PMAQI
12th Aug 2026346 PMAQI
12th Aug 2026237 PMAQI
12th Aug 2026348 PMAQI
12th Aug 2026529 PMAQI
12th Aug 20264210 PMAQI
12th Aug 20263011 PMAQI
13th Aug 20262712 AMAQI
13th Aug 2026271 AMAQI
13th Aug 2026292 AMAQI
13th Aug 2026343 AMAQI
13th Aug 2026304 AMAQI
25°C21/34°C
13th Aug 2026335 AMAQI
13th Aug 2026276 AMAQI
13th Aug 2026257 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026309 AMAQI
13th Aug 20264010 AMAQI
13th Aug 20263211 AMAQI
13th Aug 20263012 PMAQI
13th Aug 2026271 PMAQI
13th Aug 2026442 PMAQI
13th Aug 2026423 PMAQI
13th Aug 2026504 PMAQI
13th Aug 2026445 PMAQI
13th Aug 2026486 PMAQI
13th Aug 2026467 PMAQI
13th Aug 2026448 PMAQI
13th Aug 2026449 PMAQI
13th Aug 20264210 PMAQI
13th Aug 20264211 PMAQI
14th Aug 20264212 AMAQI
14th Aug 2026421 AMAQI
14th Aug 2026382 AMAQI
14th Aug 2026443 AMAQI
14th Aug 2026234 AMAQI
28°C21/35°C
14th Aug 2026325 AMAQI
14th Aug 2026366 AMAQI
14th Aug 2026297 AMAQI
14th Aug 2026468 AMAQI
14th Aug 2026349 AMAQI
14th Aug 20263810 AMAQI
14th Aug 20263811 AMAQI
14th Aug 20264012 PMAQI
14th Aug 2026341 PMAQI
14th Aug 2026422 PMAQI
14th Aug 2026323 PMAQI
14th Aug 2026294 PMAQI
14th Aug 2026305 PMAQI
14th Aug 2026346 PMAQI
14th Aug 2026237 PMAQI
14th Aug 2026388 PMAQI
14th Aug 2026449 PMAQI
14th Aug 20264010 PMAQI
14th Aug 20264411 PMAQI
15th Aug 20264412 AMAQI
15th Aug 2026511 AMAQI
15th Aug 2026502 AMAQI
15th Aug 2026403 AMAQI
15th Aug 2026384 AMAQI
25°C22/32°C
15th Aug 2026345 AMAQI
15th Aug 2026466 AMAQI
15th Aug 2026427 AMAQI
15th Aug 2026448 AMAQI
15th Aug 2026449 AMAQI
15th Aug 20265010 AMAQI
15th Aug 20265211 AMAQI
15th Aug 20265112 PMAQI
15th Aug 2026551 PMAQI
15th Aug 2026582 PMAQI
15th Aug 2026573 PMAQI
15th Aug 2026574 PMAQI
15th Aug 2026575 PMAQI
15th Aug 2026566 PMAQI
15th Aug 2026597 PMAQI
15th Aug 2026588 PMAQI
15th Aug 2026579 PMAQI
15th Aug 20265810 PMAQI
15th Aug 20265711 PMAQI
16th Aug 20265712 AMAQI
16th Aug 2026581 AMAQI
16th Aug 2026582 AMAQI
16th Aug 2026583 AMAQI
16th Aug 2026534 AMAQI
27°C21/34°C
16th Aug 2026545 AMAQI
5 AM16th Aug 2026546 AMAQI
16th Aug 2026557 AMAQI
16th Aug 2026588 AMAQI
16th Aug 2026609 AMAQI
16th Aug 20266010 AMAQI
16th Aug 20266211 AMAQI
16th Aug 20265912 PMAQI
12 PM16th Aug 2026581 PMAQI
16th Aug 2026552 PMAQI
16th Aug 2026543 PMAQI
16th Aug 2026504 PMAQI
16th Aug 2026505 PMAQI
16th Aug 2026526 PMAQI
16th Aug 2026487 PMAQI
16th Aug 2026428 PMAQI
8 PM16th Aug 2026509 PMAQI
16th Aug 20265010 PMAQI
16th Aug 20265011 PMAQI
12 AM
4 AM
27°C23/33°C
Day time
Avg. Highest Time
7 AM - 9 AM
46AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
6 AM
43AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 9 AM (Avg. 46), while the lowest AQI was between 6 AM to 6 AM (Avg. 43).
Night time
Avg. Highest Time
11 PM
47AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM
42AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 PM to 11 PM (Avg. 47), while the lowest AQI was between 4 AM to 4 AM (Avg. 42).
2026 Days Vs Air Quality
Illinois 1, West Union, Illinois, United States
2026
91%
204
9%
21
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Good
204 DaysModerate
21 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 229 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
Illinois 1, West Union, 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
30AQI (US)
30AQI (US)
2nd January 2026
39AQI (US)
39AQI (US)
3rd January 2026
51AQI (US)
51AQI (US)
4th January 2026
70AQI (US)
70AQI (US)
5th January 2026
54AQI (US)
54AQI (US)
6th January 2026
54AQI (US)
54AQI (US)
7th January 2026
56AQI (US)
56AQI (US)
8th January 2026
60AQI (US)
60AQI (US)
9th January 2026
29AQI (US)
29AQI (US)
10th January 2026
22AQI (US)
22AQI (US)
11th January 2026
20AQI (US)
20AQI (US)
12th January 2026
27AQI (US)
27AQI (US)
13th January 2026
31AQI (US)
31AQI (US)
14th January 2026
13AQI (US)
13AQI (US)
15th January 2026
15AQI (US)
15AQI (US)
16th January 2026
25AQI (US)
25AQI (US)
17th January 2026
22AQI (US)
22AQI (US)
18th January 2026
20AQI (US)
20AQI (US)
19th January 2026
18AQI (US)
18AQI (US)
20th January 2026
23AQI (US)
23AQI (US)
21st January 2026
37AQI (US)
37AQI (US)
22nd January 2026
56AQI (US)
56AQI (US)
23rd January 2026
55AQI (US)
55AQI (US)
24th January 2026
49AQI (US)
49AQI (US)
25th January 2026
48AQI (US)
48AQI (US)
26th January 2026
48AQI (US)
48AQI (US)
27th January 2026
36AQI (US)
36AQI (US)
28th January 2026
45AQI (US)
45AQI (US)
29th January 2026
52AQI (US)
52AQI (US)
30th January 2026
57AQI (US)
57AQI (US)
31st January 2026
43AQI (US)
43AQI (US)
1st February 2026
45AQI (US)
45AQI (US)
2nd February 2026
49AQI (US)
49AQI (US)
3rd February 2026
48AQI (US)
48AQI (US)
4th February 2026
45AQI (US)
45AQI (US)
5th February 2026
49AQI (US)
49AQI (US)
6th February 2026
43AQI (US)
43AQI (US)
7th February 2026
39AQI (US)
39AQI (US)
8th February 2026
44AQI (US)
44AQI (US)
9th February 2026
39AQI (US)
39AQI (US)
10th February 2026
38AQI (US)
38AQI (US)
11th February 2026
26AQI (US)
26AQI (US)
12th February 2026
24AQI (US)
24AQI (US)
13th February 2026
30AQI (US)
30AQI (US)
14th February 2026
29AQI (US)
29AQI (US)
15th February 2026
29AQI (US)
29AQI (US)
16th February 2026
32AQI (US)
32AQI (US)
17th February 2026
34AQI (US)
34AQI (US)
18th February 2026
38AQI (US)
38AQI (US)
19th February 2026
36AQI (US)
36AQI (US)
20th February 2026
28AQI (US)
28AQI (US)
21st February 2026
36AQI (US)
36AQI (US)
22nd February 2026
34AQI (US)
34AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
35AQI (US)
35AQI (US)
25th February 2026
36AQI (US)
36AQI (US)
26th February 2026
29AQI (US)
29AQI (US)
27th February 2026
26AQI (US)
26AQI (US)
28th February 2026
25AQI (US)
25AQI (US)
1st March 2026
29AQI (US)
29AQI (US)
2nd March 2026
44AQI (US)
44AQI (US)
3rd March 2026
26AQI (US)
26AQI (US)
4th March 2026
38AQI (US)
38AQI (US)
5th March 2026
33AQI (US)
33AQI (US)
6th March 2026
18AQI (US)
18AQI (US)
7th March 2026
33AQI (US)
33AQI (US)
8th March 2026
37AQI (US)
37AQI (US)
9th March 2026
32AQI (US)
32AQI (US)
10th March 2026
28AQI (US)
28AQI (US)
11th March 2026
34AQI (US)
34AQI (US)
12th March 2026
37AQI (US)
37AQI (US)
13th March 2026
35AQI (US)
35AQI (US)
14th March 2026
24AQI (US)
24AQI (US)
15th March 2026
17AQI (US)
17AQI (US)
16th March 2026
36AQI (US)
36AQI (US)
17th March 2026
30AQI (US)
30AQI (US)
18th March 2026
25AQI (US)
25AQI (US)
19th March 2026
29AQI (US)
29AQI (US)
20th March 2026
38AQI (US)
38AQI (US)
21st March 2026
31AQI (US)
31AQI (US)
22nd March 2026
30AQI (US)
30AQI (US)
23rd March 2026
37AQI (US)
37AQI (US)
24th March 2026
27AQI (US)
27AQI (US)
25th March 2026
29AQI (US)
29AQI (US)
26th March 2026
34AQI (US)
34AQI (US)
27th March 2026
21AQI (US)
21AQI (US)
28th March 2026
20AQI (US)
20AQI (US)
29th March 2026
20AQI (US)
20AQI (US)
30th March 2026
20AQI (US)
20AQI (US)
31st March 2026
24AQI (US)
24AQI (US)
1st April 2026
22AQI (US)
22AQI (US)
2nd April 2026
17AQI (US)
17AQI (US)
3rd April 2026
17AQI (US)
17AQI (US)
4th April 2026
25AQI (US)
25AQI (US)
5th April 2026
29AQI (US)
29AQI (US)
6th April 2026
28AQI (US)
28AQI (US)
7th April 2026
24AQI (US)
24AQI (US)
8th April 2026
30AQI (US)
30AQI (US)
9th April 2026
27AQI (US)
27AQI (US)
10th April 2026
32AQI (US)
32AQI (US)
11th April 2026
30AQI (US)
30AQI (US)
12th April 2026
26AQI (US)
26AQI (US)
13th April 2026
25AQI (US)
25AQI (US)
14th April 2026
24AQI (US)
24AQI (US)
15th April 2026
29AQI (US)
29AQI (US)
16th April 2026
23AQI (US)
23AQI (US)
17th April 2026
18th April 2026
24AQI (US)
24AQI (US)
19th April 2026
29AQI (US)
29AQI (US)
20th April 2026
23AQI (US)
23AQI (US)
21st April 2026
19AQI (US)
19AQI (US)
22nd April 2026
23rd April 2026
27AQI (US)
27AQI (US)
24th April 2026
27AQI (US)
27AQI (US)
25th April 2026
19AQI (US)
19AQI (US)
26th April 2026
23AQI (US)
23AQI (US)
27th April 2026
22AQI (US)
22AQI (US)
28th April 2026
19AQI (US)
19AQI (US)
29th April 2026
24AQI (US)
24AQI (US)
30th April 2026
25AQI (US)
25AQI (US)
1st May 2026
21AQI (US)
21AQI (US)
2nd May 2026
16AQI (US)
16AQI (US)
3rd May 2026
21AQI (US)
21AQI (US)
4th May 2026
33AQI (US)
33AQI (US)
5th May 2026
33AQI (US)
33AQI (US)
6th May 2026
26AQI (US)
26AQI (US)
7th May 2026
21AQI (US)
21AQI (US)
8th May 2026
24AQI (US)
24AQI (US)
9th May 2026
10th May 2026
24AQI (US)
24AQI (US)
11th May 2026
18AQI (US)
18AQI (US)
12th May 2026
25AQI (US)
25AQI (US)
13th May 2026
34AQI (US)
34AQI (US)
14th May 2026
18AQI (US)
18AQI (US)
15th May 2026
38AQI (US)
38AQI (US)
16th May 2026
49AQI (US)
49AQI (US)
17th May 2026
52AQI (US)
52AQI (US)
18th May 2026
56AQI (US)
56AQI (US)
19th May 2026
52AQI (US)
52AQI (US)
20th May 2026
49AQI (US)
49AQI (US)
21st May 2026
35AQI (US)
35AQI (US)
22nd May 2026
43AQI (US)
43AQI (US)
23rd May 2026
47AQI (US)
47AQI (US)
24th May 2026
44AQI (US)
44AQI (US)
25th May 2026
37AQI (US)
37AQI (US)
26th May 2026
20AQI (US)
20AQI (US)
27th May 2026
17AQI (US)
17AQI (US)
28th May 2026
22AQI (US)
22AQI (US)
29th May 2026
21AQI (US)
21AQI (US)
30th May 2026
27AQI (US)
27AQI (US)
31st May 2026
15AQI (US)
15AQI (US)
1st June 2026
22AQI (US)
22AQI (US)
2nd June 2026
17AQI (US)
17AQI (US)
3rd June 2026
20AQI (US)
20AQI (US)
4th June 2026
25AQI (US)
25AQI (US)
5th June 2026
22AQI (US)
22AQI (US)
6th June 2026
23AQI (US)
23AQI (US)
7th June 2026
21AQI (US)
21AQI (US)
8th June 2026
15AQI (US)
15AQI (US)
9th June 2026
18AQI (US)
18AQI (US)
10th June 2026
21AQI (US)
21AQI (US)
11th June 2026
17AQI (US)
17AQI (US)
12th June 2026
16AQI (US)
16AQI (US)
13th June 2026
19AQI (US)
19AQI (US)
14th June 2026
15AQI (US)
15AQI (US)
15th June 2026
16AQI (US)
16AQI (US)
16th June 2026
17AQI (US)
17AQI (US)
17th June 2026
18AQI (US)
18AQI (US)
18th June 2026
36AQI (US)
36AQI (US)
19th June 2026
26AQI (US)
26AQI (US)
20th June 2026
16AQI (US)
16AQI (US)
21st June 2026
21AQI (US)
21AQI (US)
22nd June 2026
21AQI (US)
21AQI (US)
23rd June 2026
14AQI (US)
14AQI (US)
24th June 2026
16AQI (US)
16AQI (US)
25th June 2026
14AQI (US)
14AQI (US)
26th June 2026
19AQI (US)
19AQI (US)
27th June 2026
23AQI (US)
23AQI (US)
28th June 2026
22AQI (US)
22AQI (US)
29th June 2026
35AQI (US)
35AQI (US)
30th June 2026
54AQI (US)
54AQI (US)
1st July 2026
57AQI (US)
57AQI (US)
2nd July 2026
36AQI (US)
36AQI (US)
3rd July 2026
29AQI (US)
29AQI (US)
4th July 2026
22AQI (US)
22AQI (US)
5th July 2026
27AQI (US)
27AQI (US)
6th July 2026
21AQI (US)
21AQI (US)
7th July 2026
21AQI (US)
21AQI (US)
8th July 2026
19AQI (US)
19AQI (US)
9th July 2026
21AQI (US)
21AQI (US)
10th July 2026
12AQI (US)
12AQI (US)
11th July 2026
12AQI (US)
12AQI (US)
12th July 2026
12AQI (US)
12AQI (US)
13th July 2026
19AQI (US)
19AQI (US)
14th July 2026
15AQI (US)
15AQI (US)
15th July 2026
16AQI (US)
16AQI (US)
16th July 2026
14AQI (US)
14AQI (US)
17th July 2026
39AQI (US)
39AQI (US)
18th July 2026
43AQI (US)
43AQI (US)
19th July 2026
61AQI (US)
61AQI (US)
20th July 2026
96AQI (US)
96AQI (US)
21st July 2026
63AQI (US)
63AQI (US)
22nd July 2026
41AQI (US)
41AQI (US)
23rd July 2026
32AQI (US)
32AQI (US)
24th July 2026
34AQI (US)
34AQI (US)
25th July 2026
45AQI (US)
45AQI (US)
26th July 2026
53AQI (US)
53AQI (US)
27th July 2026
47AQI (US)
47AQI (US)
28th July 2026
48AQI (US)
48AQI (US)
29th July 2026
46AQI (US)
46AQI (US)
30th July 2026
37AQI (US)
37AQI (US)
31st July 2026
34AQI (US)
34AQI (US)
1st August 2026
36AQI (US)
36AQI (US)
2nd August 2026
42AQI (US)
42AQI (US)
3rd August 2026
44AQI (US)
44AQI (US)
4th August 2026
38AQI (US)
38AQI (US)
5th August 2026
39AQI (US)
39AQI (US)
6th August 2026
43AQI (US)
43AQI (US)
7th August 2026
44AQI (US)
44AQI (US)
8th August 2026
46AQI (US)
46AQI (US)
9th August 2026
41AQI (US)
41AQI (US)
10th August 2026
42AQI (US)
42AQI (US)
11th August 2026
42AQI (US)
42AQI (US)
12th August 2026
37AQI (US)
37AQI (US)
13th August 2026
36AQI (US)
36AQI (US)
14th August 2026
36AQI (US)
36AQI (US)
15th August 2026
51AQI (US)
51AQI (US)
16th August 2026
54AQI (US)
54AQI (US)
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
39AQI (US)
36AQI (US)
30AQI (US)
25AQI (US)
31AQI (US)
21AQI (US)
35AQI (US)
42AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202632AQI (US)
21
10
28
31
28
27
3
29
1
26
5
14
2
204
21
Highest AQI (US) recorded in
August42AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202542AQI (US)
5
30
31
16
14
24
7
25
6
17
13
18
13
19
11
17
14
202
78
Highest AQI (US) recorded in
December49AQI (US)
Lowest AQI (US) recorded in
May29AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Most Polluted Year Recorded
2025(Avg.)
42AQI (US)Least Polluted Year Recorded
2026(Avg.)
32AQI (US)Illinois 1's annual 2026 AQI (US) (32) shows an average percentage change of -23.8% (improved AQI (US)) compared to previous years: 2025 (42).
