Highway 99, Eugene, Oregon, 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
Highway 99, Eugene, Oregon, United States
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2026
71AQILowest AQI recorded on
16th Aug 2025
13AQISame Day Analysis (7th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Day & Night AQI Trend: 7th Aug - 8th Aug 2026
Highway 99, Eugene, Oregon, United States
AQI
Day
Night
.
5 AM7th Aug 2026
8 PM
4 AM8th Aug 2026
Day time
Avg. Highest Time
5PM7th Aug
76AQI
Avg. Lowest Time
11AM7th Aug
54AQI
Night time
Avg. Highest Time
5AM7th Aug
66AQI
Avg. Lowest Time
4AM8th Aug
42AQI
In the last 24 hours,
Highway 99's AQI reached its highest point of 76 at 5 PM during the Day, while the lowest point, 42, was recorded at 4 AM during the Night between 7th Aug and 8th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Highway 99, Eugene, Oregon, United States
JulAug
10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th
Day
Night
10th Jul 2026355 AMAQI
10th Jul 2026386 AMAQI
10th Jul 2026347 AMAQI
10th Jul 2026368 AMAQI
10th Jul 2026369 AMAQI
10th Jul 20263610 AMAQI
10th Jul 20263611 AMAQI
10th Jul 20262912 PMAQI
10th Jul 2026331 PMAQI
10th Jul 2026342 PMAQI
10th Jul 2026343 PMAQI
10th Jul 2026354 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026386 PMAQI
10th Jul 2026307 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026269 PMAQI
10th Jul 20262410 PMAQI
10th Jul 20262211 PMAQI
11th Jul 20263012 AMAQI
11th Jul 2026321 AMAQI
11th Jul 2026322 AMAQI
11th Jul 2026323 AMAQI
11th Jul 2026314 AMAQI
20°C10/31°C
11th Jul 2026325 AMAQI
11th Jul 2026346 AMAQI
11th Jul 2026327 AMAQI
11th Jul 2026318 AMAQI
11th Jul 2026349 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20263411 AMAQI
11th Jul 20263012 PMAQI
11th Jul 2026301 PMAQI
11th Jul 2026322 PMAQI
11th Jul 2026333 PMAQI
11th Jul 2026304 PMAQI
11th Jul 2026315 PMAQI
11th Jul 2026326 PMAQI
11th Jul 2026297 PMAQI
11th Jul 2026288 PMAQI
11th Jul 2026269 PMAQI
11th Jul 20262310 PMAQI
11th Jul 20262311 PMAQI
12th Jul 20262612 AMAQI
12th Jul 2026321 AMAQI
12th Jul 2026312 AMAQI
12th Jul 2026323 AMAQI
12th Jul 2026304 AMAQI
20°C15/28°C
12th Jul 2026295 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026307 AMAQI
12th Jul 2026318 AMAQI
12th Jul 2026349 AMAQI
12th Jul 20263210 AMAQI
12th Jul 20263011 AMAQI
12th Jul 20262812 PMAQI
12th Jul 2026301 PMAQI
12th Jul 2026302 PMAQI
12th Jul 2026303 PMAQI
12th Jul 2026304 PMAQI
12th Jul 2026295 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026249 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262411 PMAQI
13th Jul 20262812 AMAQI
13th Jul 2026321 AMAQI
13th Jul 2026312 AMAQI
13th Jul 2026333 AMAQI
13th Jul 2026344 AMAQI
19°C10/29°C
13th Jul 2026365 AMAQI
13th Jul 2026346 AMAQI
13th Jul 2026387 AMAQI
13th Jul 2026368 AMAQI
13th Jul 2026329 AMAQI
13th Jul 20263210 AMAQI
13th Jul 20263211 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026321 PMAQI
13th Jul 2026312 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026294 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026366 PMAQI
13th Jul 2026267 PMAQI
13th Jul 2026248 PMAQI
13th Jul 2026229 PMAQI
13th Jul 20262110 PMAQI
13th Jul 20262211 PMAQI
14th Jul 20262612 AMAQI
14th Jul 2026321 AMAQI
14th Jul 2026332 AMAQI
14th Jul 2026303 AMAQI
14th Jul 2026314 AMAQI
22°C11/33°C
14th Jul 2026335 AMAQI
14th Jul 2026346 AMAQI
14th Jul 2026347 AMAQI
14th Jul 2026388 AMAQI
14th Jul 2026369 AMAQI
14th Jul 20263410 AMAQI
14th Jul 20263511 AMAQI
14th Jul 20262812 PMAQI
14th Jul 2026331 PMAQI
14th Jul 2026262 PMAQI
14th Jul 2026353 PMAQI
14th Jul 2026314 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026326 PMAQI
14th Jul 2026267 PMAQI
14th Jul 2026248 PMAQI
14th Jul 2026249 PMAQI
14th Jul 20262010 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026251 AMAQI
15th Jul 2026242 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026284 AMAQI
23°C13/34°C
15th Jul 2026265 AMAQI
15th Jul 2026306 AMAQI
15th Jul 2026247 AMAQI
15th Jul 2026288 AMAQI
15th Jul 2026269 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20263111 AMAQI
15th Jul 20263012 PMAQI
15th Jul 2026321 PMAQI
15th Jul 2026302 PMAQI
15th Jul 2026303 PMAQI
15th Jul 2026304 PMAQI
15th Jul 2026315 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026297 PMAQI
15th Jul 2026308 PMAQI
15th Jul 2026259 PMAQI
15th Jul 20262810 PMAQI
15th Jul 20262711 PMAQI
16th Jul 20262612 AMAQI
16th Jul 2026281 AMAQI
16th Jul 2026312 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026284 AMAQI
22°C13/33°C
16th Jul 2026285 AMAQI
16th Jul 2026266 AMAQI
16th Jul 2026327 AMAQI
16th Jul 2026308 AMAQI
16th Jul 2026329 AMAQI
16th Jul 20263110 AMAQI
16th Jul 20263111 AMAQI
16th Jul 20263012 PMAQI
16th Jul 2026301 PMAQI
16th Jul 2026312 PMAQI
16th Jul 2026303 PMAQI
16th Jul 2026284 PMAQI
16th Jul 2026305 PMAQI
16th Jul 2026316 PMAQI
16th Jul 2026307 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026269 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262411 PMAQI
17th Jul 20262712 AMAQI
17th Jul 2026241 AMAQI
17th Jul 2026282 AMAQI
17th Jul 2026623 AMAQI
17th Jul 2026464 AMAQI
19°C13/26°C
17th Jul 2026675 AMAQI
17th Jul 2026496 AMAQI
17th Jul 2026717 AMAQI
17th Jul 2026398 AMAQI
17th Jul 2026549 AMAQI
17th Jul 20264210 AMAQI
17th Jul 20267811 AMAQI
17th Jul 20264612 PMAQI
17th Jul 2026721 PMAQI
17th Jul 2026442 PMAQI
17th Jul 2026253 PMAQI
17th Jul 2026364 PMAQI
17th Jul 2026445 PMAQI
17th Jul 2026426 PMAQI
17th Jul 2026407 PMAQI
17th Jul 2026578 PMAQI
17th Jul 2026699 PMAQI
17th Jul 20264310 PMAQI
17th Jul 20264411 PMAQI
18th Jul 20262512 AMAQI
18th Jul 2026621 AMAQI
18th Jul 2026652 AMAQI
18th Jul 2026403 AMAQI
18th Jul 2026714 AMAQI
19°C9/30°C
18th Jul 2026645 AMAQI
18th Jul 2026656 AMAQI
18th Jul 2026467 AMAQI
18th Jul 2026628 AMAQI
18th Jul 2026629 AMAQI
18th Jul 20266710 AMAQI
18th Jul 20267211 AMAQI
18th Jul 20267112 PMAQI
18th Jul 2026541 PMAQI
18th Jul 2026422 PMAQI
18th Jul 2026433 PMAQI
18th Jul 2026464 PMAQI
18th Jul 2026255 PMAQI
18th Jul 2026596 PMAQI
18th Jul 2026457 PMAQI
18th Jul 2026488 PMAQI
18th Jul 2026429 PMAQI
18th Jul 20263210 PMAQI
18th Jul 20265211 PMAQI
19th Jul 20263612 AMAQI
19th Jul 2026361 AMAQI
19th Jul 2026272 AMAQI
19th Jul 2026273 AMAQI
19th Jul 2026404 AMAQI
22°C11/32°C
19th Jul 2026665 AMAQI
19th Jul 2026506 AMAQI
19th Jul 2026327 AMAQI
19th Jul 2026428 AMAQI
19th Jul 2026549 AMAQI
19th Jul 20263810 AMAQI
19th Jul 20263211 AMAQI
19th Jul 20262712 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026423 PMAQI
19th Jul 2026424 PMAQI
19th Jul 2026465 PMAQI
19th Jul 2026476 PMAQI
19th Jul 2026237 PMAQI
19th Jul 2026248 PMAQI
19th Jul 2026449 PMAQI
19th Jul 20266610 PMAQI
19th Jul 20264811 PMAQI
20th Jul 20262512 AMAQI
20th Jul 2026441 AMAQI
20th Jul 2026462 AMAQI
20th Jul 2026273 AMAQI
20th Jul 2026264 AMAQI
23°C13/33°C
20th Jul 2026675 AMAQI
20th Jul 2026506 AMAQI
20th Jul 2026657 AMAQI
20th Jul 2026418 AMAQI
20th Jul 2026529 AMAQI
20th Jul 20263210 AMAQI
20th Jul 20264811 AMAQI
20th Jul 20266512 PMAQI
20th Jul 2026671 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026483 PMAQI
20th Jul 2026424 PMAQI
20th Jul 2026445 PMAQI
20th Jul 2026446 PMAQI
20th Jul 2026387 PMAQI
20th Jul 2026429 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20264611 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026381 AMAQI
21st Jul 2026502 AMAQI
21st Jul 2026513 AMAQI
21st Jul 2026484 AMAQI
25°C17/36°C
21st Jul 2026505 AMAQI
21st Jul 2026486 AMAQI
21st Jul 2026477 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026509 AMAQI
21st Jul 20264210 AMAQI
21st Jul 20264611 AMAQI
21st Jul 20264412 PMAQI
21st Jul 2026481 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026593 PMAQI
21st Jul 2026664 PMAQI
21st Jul 2026695 PMAQI
21st Jul 2026666 PMAQI
21st Jul 2026697 PMAQI
21st Jul 2026708 PMAQI
21st Jul 2026649 PMAQI
21st Jul 20266210 PMAQI
21st Jul 20266611 PMAQI
22nd Jul 20265312 AMAQI
22nd Jul 2026601 AMAQI
22nd Jul 2026632 AMAQI
22nd Jul 2026643 AMAQI
22nd Jul 2026654 AMAQI
28°C18/40°C
22nd Jul 2026705 AMAQI
22nd Jul 2026686 AMAQI
22nd Jul 2026677 AMAQI
22nd Jul 2026708 AMAQI
22nd Jul 2026689 AMAQI
22nd Jul 20266710 AMAQI
22nd Jul 20266611 AMAQI
22nd Jul 20266912 PMAQI
22nd Jul 2026621 PMAQI
22nd Jul 2026532 PMAQI
22nd Jul 2026443 PMAQI
22nd Jul 2026424 PMAQI
22nd Jul 2026535 PMAQI
22nd Jul 2026506 PMAQI
22nd Jul 2026527 PMAQI
22nd Jul 2026508 PMAQI
22nd Jul 2026529 PMAQI
22nd Jul 20264610 PMAQI
22nd Jul 20265211 PMAQI
23rd Jul 20266612 AMAQI
23rd Jul 2026511 AMAQI
23rd Jul 2026452 AMAQI
23rd Jul 2026703 AMAQI
23rd Jul 2026584 AMAQI
26°C19/36°C
23rd Jul 2026565 AMAQI
23rd Jul 2026706 AMAQI
23rd Jul 2026747 AMAQI
23rd Jul 2026808 AMAQI
23rd Jul 2026679 AMAQI
23rd Jul 20265810 AMAQI
23rd Jul 20266711 AMAQI
23rd Jul 20266512 PMAQI
23rd Jul 2026721 PMAQI
23rd Jul 2026562 PMAQI
23rd Jul 2026543 PMAQI
23rd Jul 2026484 PMAQI
23rd Jul 2026365 PMAQI
23rd Jul 2026316 PMAQI
23rd Jul 2026267 PMAQI
23rd Jul 2026518 PMAQI
23rd Jul 2026569 PMAQI
23rd Jul 20266510 PMAQI
23rd Jul 20265411 PMAQI
24th Jul 20263212 AMAQI
24th Jul 2026381 AMAQI
24th Jul 2026402 AMAQI
24th Jul 2026583 AMAQI
24th Jul 2026524 AMAQI
22°C17/31°C
24th Jul 2026545 AMAQI
24th Jul 2026546 AMAQI
24th Jul 2026587 AMAQI
24th Jul 2026588 AMAQI
24th Jul 2026569 AMAQI
24th Jul 20265410 AMAQI
24th Jul 20265411 AMAQI
24th Jul 20265212 PMAQI
24th Jul 2026401 PMAQI
24th Jul 2026562 PMAQI
24th Jul 2026543 PMAQI
24th Jul 2026634 PMAQI
24th Jul 2026485 PMAQI
24th Jul 2026706 PMAQI
24th Jul 2026657 PMAQI
24th Jul 2026648 PMAQI
24th Jul 2026609 PMAQI
24th Jul 20265610 PMAQI
24th Jul 20265411 PMAQI
25th Jul 20265412 AMAQI
25th Jul 2026571 AMAQI
25th Jul 2026662 AMAQI
25th Jul 2026633 AMAQI
25th Jul 2026564 AMAQI
22°C15/32°C
25th Jul 2026505 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026567 AMAQI
25th Jul 2026628 AMAQI
25th Jul 2026609 AMAQI
25th Jul 20266810 AMAQI
25th Jul 20265811 AMAQI
25th Jul 20264012 PMAQI
25th Jul 2026641 PMAQI
25th Jul 2026612 PMAQI
25th Jul 2026663 PMAQI
25th Jul 2026574 PMAQI
25th Jul 2026645 PMAQI
25th Jul 2026506 PMAQI
25th Jul 2026267 PMAQI
25th Jul 2026238 PMAQI
25th Jul 2026549 PMAQI
25th Jul 20265310 PMAQI
25th Jul 20264011 PMAQI
26th Jul 20264512 AMAQI
26th Jul 2026601 AMAQI
26th Jul 2026382 AMAQI
26th Jul 2026523 AMAQI
26th Jul 2026464 AMAQI
20°C12/29°C
26th Jul 2026625 AMAQI
26th Jul 2026626 AMAQI
26th Jul 2026677 AMAQI
26th Jul 2026678 AMAQI
26th Jul 2026629 AMAQI
26th Jul 20266810 AMAQI
26th Jul 20266311 AMAQI
26th Jul 20265812 PMAQI
26th Jul 2026441 PMAQI
26th Jul 2026572 PMAQI
26th Jul 2026543 PMAQI
26th Jul 2026214 PMAQI
26th Jul 2026345 PMAQI
26th Jul 2026366 PMAQI
26th Jul 2026667 PMAQI
26th Jul 2026628 PMAQI
26th Jul 2026639 PMAQI
26th Jul 20266210 PMAQI
26th Jul 20266211 PMAQI
27th Jul 20264412 AMAQI
27th Jul 2026631 AMAQI
27th Jul 2026672 AMAQI
27th Jul 2026363 AMAQI
27th Jul 2026304 AMAQI
20°C14/29°C
27th Jul 2026425 AMAQI
27th Jul 2026666 AMAQI
27th Jul 2026697 AMAQI
27th Jul 2026678 AMAQI
27th Jul 2026649 AMAQI
27th Jul 20266610 AMAQI
27th Jul 20266611 AMAQI
27th Jul 20266012 PMAQI
27th Jul 2026581 PMAQI
27th Jul 2026622 PMAQI
27th Jul 2026603 PMAQI
27th Jul 2026414 PMAQI
27th Jul 2026245 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026409 PMAQI
27th Jul 20264510 PMAQI
27th Jul 20264511 PMAQI
28th Jul 20264212 AMAQI
28th Jul 2026591 AMAQI
28th Jul 2026632 AMAQI
28th Jul 2026563 AMAQI
28th Jul 2026584 AMAQI
21°C11/32°C
28th Jul 2026675 AMAQI
28th Jul 2026586 AMAQI
28th Jul 2026277 AMAQI
28th Jul 2026528 AMAQI
28th Jul 2026749 AMAQI
28th Jul 20267410 AMAQI
28th Jul 20267111 AMAQI
28th Jul 20266812 PMAQI
28th Jul 2026631 PMAQI
28th Jul 2026462 PMAQI
28th Jul 2026643 PMAQI
28th Jul 2026454 PMAQI
28th Jul 2026225 PMAQI
28th Jul 2026526 PMAQI
28th Jul 2026467 PMAQI
28th Jul 2026258 PMAQI
28th Jul 2026449 PMAQI
28th Jul 20265910 PMAQI
28th Jul 20264011 PMAQI
29th Jul 20266212 AMAQI
29th Jul 2026601 AMAQI
29th Jul 2026502 AMAQI
29th Jul 2026693 AMAQI
29th Jul 2026744 AMAQI
21°C14/30°C
29th Jul 2026695 AMAQI
29th Jul 2026646 AMAQI
29th Jul 2026457 AMAQI
29th Jul 2026588 AMAQI
29th Jul 2026679 AMAQI
29th Jul 20263210 AMAQI
29th Jul 20264011 AMAQI
29th Jul 20265812 PMAQI
29th Jul 2026631 PMAQI
29th Jul 2026652 PMAQI
29th Jul 2026463 PMAQI
29th Jul 2026364 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026366 PMAQI
29th Jul 2026647 PMAQI
29th Jul 2026468 PMAQI
29th Jul 2026279 PMAQI
29th Jul 20266510 PMAQI
29th Jul 20262511 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026541 AMAQI
30th Jul 2026562 AMAQI
30th Jul 2026503 AMAQI
30th Jul 2026404 AMAQI
21°C13/30°C
30th Jul 2026675 AMAQI
30th Jul 2026706 AMAQI
30th Jul 2026677 AMAQI
30th Jul 2026648 AMAQI
30th Jul 2026669 AMAQI
30th Jul 20266410 AMAQI
30th Jul 20266711 AMAQI
30th Jul 20266612 PMAQI
30th Jul 2026681 PMAQI
30th Jul 2026642 PMAQI
30th Jul 2026623 PMAQI
30th Jul 2026664 PMAQI
30th Jul 2026585 PMAQI
30th Jul 2026646 PMAQI
30th Jul 2026667 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026589 PMAQI
30th Jul 20266710 PMAQI
30th Jul 20265411 PMAQI
31st Jul 20266812 AMAQI
31st Jul 2026681 AMAQI
31st Jul 2026712 AMAQI
31st Jul 2026543 AMAQI
31st Jul 2026604 AMAQI
20°C11/30°C
31st Jul 2026645 AMAQI
31st Jul 2026606 AMAQI
31st Jul 2026577 AMAQI
31st Jul 2026638 AMAQI
31st Jul 2026579 AMAQI
31st Jul 20263810 AMAQI
31st Jul 20265011 AMAQI
31st Jul 20266512 PMAQI
31st Jul 2026421 PMAQI
31st Jul 2026512 PMAQI
31st Jul 2026513 PMAQI
31st Jul 2026214 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026276 PMAQI
31st Jul 2026447 PMAQI
31st Jul 2026408 PMAQI
31st Jul 2026389 PMAQI
31st Jul 20265410 PMAQI
31st Jul 20264811 PMAQI
1st Aug 20265312 AMAQI
1st Aug 2026401 AMAQI
1st Aug 2026462 AMAQI
1st Aug 2026583 AMAQI
1st Aug 2026524 AMAQI
22°C12/34°C
1st Aug 2026635 AMAQI
1st Aug 2026386 AMAQI
1st Aug 2026477 AMAQI
1st Aug 2026688 AMAQI
1st Aug 2026669 AMAQI
1st Aug 20266710 AMAQI
1st Aug 20267111 AMAQI
1st Aug 20266512 PMAQI
1st Aug 2026641 PMAQI
1st Aug 2026602 PMAQI
1st Aug 2026603 PMAQI
1st Aug 2026214 PMAQI
1st Aug 2026295 PMAQI
1st Aug 2026476 PMAQI
1st Aug 2026447 PMAQI
1st Aug 2026478 PMAQI
1st Aug 2026429 PMAQI
1st Aug 20264010 PMAQI
1st Aug 20265811 PMAQI
2nd Aug 20265612 AMAQI
2nd Aug 2026251 AMAQI
2nd Aug 2026402 AMAQI
2nd Aug 2026463 AMAQI
2nd Aug 2026464 AMAQI
20°C15/26°C
2nd Aug 2026505 AMAQI
2nd Aug 2026526 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026648 AMAQI
2nd Aug 2026649 AMAQI
2nd Aug 20266710 AMAQI
2nd Aug 20266511 AMAQI
2nd Aug 20266312 PMAQI
2nd Aug 2026581 PMAQI
2nd Aug 2026542 PMAQI
2nd Aug 2026603 PMAQI
2nd Aug 2026584 PMAQI
2nd Aug 2026365 PMAQI
2nd Aug 2026276 PMAQI
2nd Aug 2026607 PMAQI
2nd Aug 2026668 PMAQI
2nd Aug 2026409 PMAQI
2nd Aug 20264710 PMAQI
2nd Aug 20266311 PMAQI
3rd Aug 20265912 AMAQI
3rd Aug 2026211 AMAQI
3rd Aug 2026472 AMAQI
3rd Aug 2026503 AMAQI
3rd Aug 2026564 AMAQI
19°C11/27°C
3rd Aug 2026425 AMAQI
3rd Aug 2026506 AMAQI
3rd Aug 2026367 AMAQI
3rd Aug 2026568 AMAQI
3rd Aug 2026509 AMAQI
3rd Aug 20265210 AMAQI
3rd Aug 20265811 AMAQI
3rd Aug 20267012 PMAQI
3rd Aug 2026521 PMAQI
3rd Aug 2026572 PMAQI
3rd Aug 2026423 PMAQI
3rd Aug 2026544 PMAQI
3rd Aug 2026635 PMAQI
3rd Aug 2026686 PMAQI
3rd Aug 2026677 PMAQI
3rd Aug 2026728 PMAQI
3rd Aug 2026679 PMAQI
3rd Aug 20266410 PMAQI
3rd Aug 20266711 PMAQI
4th Aug 20267412 AMAQI
4th Aug 2026781 AMAQI
4th Aug 2026722 AMAQI
4th Aug 2026733 AMAQI
4th Aug 2026714 AMAQI
21°C11/32°C
4th Aug 2026685 AMAQI
4th Aug 2026726 AMAQI
4th Aug 2026747 AMAQI
4th Aug 2026758 AMAQI
4th Aug 2026869 AMAQI
4th Aug 20266910 AMAQI
4th Aug 20266811 AMAQI
4th Aug 20266912 PMAQI
4th Aug 2026711 PMAQI
4th Aug 2026622 PMAQI
4th Aug 2026673 PMAQI
4th Aug 2026584 PMAQI
4th Aug 2026685 PMAQI
4th Aug 2026766 PMAQI
4th Aug 2026727 PMAQI
4th Aug 2026698 PMAQI
4th Aug 2026609 PMAQI
4th Aug 20266710 PMAQI
4th Aug 20267211 PMAQI
5th Aug 20266312 AMAQI
5th Aug 2026681 AMAQI
5th Aug 2026672 AMAQI
5th Aug 2026743 AMAQI
5th Aug 2026744 AMAQI
24°C12/36°C
5th Aug 2026765 AMAQI
5th Aug 2026786 AMAQI
5th Aug 2026747 AMAQI
5th Aug 2026748 AMAQI
5th Aug 2026719 AMAQI
5th Aug 20266810 AMAQI
5th Aug 20266511 AMAQI
5th Aug 20265912 PMAQI
5th Aug 2026641 PMAQI
5th Aug 2026722 PMAQI
5th Aug 2026853 PMAQI
5th Aug 2026784 PMAQI
5th Aug 2026805 PMAQI
5th Aug 2026836 PMAQI
5th Aug 2026727 PMAQI
5th Aug 2026668 PMAQI
5th Aug 2026649 PMAQI
5th Aug 20266210 PMAQI
5th Aug 20266511 PMAQI
6th Aug 20266412 AMAQI
6th Aug 2026721 AMAQI
6th Aug 2026672 AMAQI
6th Aug 2026713 AMAQI
6th Aug 2026734 AMAQI
25°C14/37°C
6th Aug 2026785 AMAQI
6th Aug 2026686 AMAQI
6th Aug 2026627 AMAQI
6th Aug 2026728 AMAQI
6th Aug 2026789 AMAQI
6th Aug 20267010 AMAQI
6th Aug 20267411 AMAQI
6th Aug 20266512 PMAQI
6th Aug 2026781 PMAQI
6th Aug 2026712 PMAQI
6th Aug 2026693 PMAQI
6th Aug 2026734 PMAQI
6th Aug 2026765 PMAQI
6th Aug 2026666 PMAQI
6th Aug 2026677 PMAQI
6th Aug 2026728 PMAQI
6th Aug 2026649 PMAQI
6th Aug 20267210 PMAQI
6th Aug 20266611 PMAQI
7th Aug 20267412 AMAQI
7th Aug 2026791 AMAQI
7th Aug 2026702 AMAQI
7th Aug 2026713 AMAQI
7th Aug 2026664 AMAQI
25°C15/37°C
7th Aug 2026665 AMAQI
7th Aug 2026606 AMAQI
7th Aug 2026567 AMAQI
7th Aug 2026548 AMAQI
7th Aug 2026599 AMAQI
7th Aug 20265910 AMAQI
7th Aug 20265411 AMAQI
7th Aug 20265612 PMAQI
7th Aug 2026661 PMAQI
7th Aug 2026702 PMAQI
7th Aug 2026713 PMAQI
7th Aug 2026664 PMAQI
7th Aug 2026765 PMAQI
7th Aug 2026716 PMAQI
7th Aug 2026697 PMAQI
7th Aug 2026578 PMAQI
7th Aug 2026559 PMAQI
7th Aug 20265110 PMAQI
7th Aug 20265011 PMAQI
8th Aug 20264812 AMAQI
8th Aug 2026501 AMAQI
8th Aug 2026502 AMAQI
8th Aug 2026483 AMAQI
8th Aug 2026424 AMAQI
24°C14/35°C
8th Aug 2026445 AMAQI
5 AM8th Aug 2026466 AMAQI
8th Aug 2026487 AMAQI
8th Aug 2026518 AMAQI
8th Aug 2026549 AMAQI
8th Aug 20265910 AMAQI
8th Aug 20265811 AMAQI
8th Aug 20265612 PMAQI
12 PM8th Aug 2026501 PMAQI
8th Aug 2026502 PMAQI
8th Aug 2026483 PMAQI
8th Aug 2026504 PMAQI
8th Aug 2026465 PMAQI
8 PM
12 AM
4 AM
25°C15/35°C
Day time
Avg. Highest Time
9 AM
56AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 PM - 5 PM
45AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 9 AM (Avg. 56), while the lowest AQI was between 4 PM to 5 PM (Avg. 45).
Night time
Avg. Highest Time
1 AM - 4 AM
48AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM
44AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 48), while the lowest AQI was between 12 AM to 12 AM (Avg. 44).
2026 Days Vs Air Quality
Highway 99, Eugene, Oregon, United States
2026
84%
181
16%
35
Total number of days with different AQI categories in last 220 days in 2026 (145 days remaining)
Good
181 DaysModerate
35 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 220 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
Highway 99, Eugene, Oregon, 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
65AQI (US)
65AQI (US)
2nd January 2026
48AQI (US)
48AQI (US)
3rd January 2026
18AQI (US)
18AQI (US)
4th January 2026
15AQI (US)
15AQI (US)
5th January 2026
22AQI (US)
22AQI (US)
6th January 2026
36AQI (US)
36AQI (US)
7th January 2026
11AQI (US)
11AQI (US)
8th January 2026
11AQI (US)
11AQI (US)
9th January 2026
14AQI (US)
14AQI (US)
10th January 2026
26AQI (US)
26AQI (US)
11th January 2026
22AQI (US)
22AQI (US)
12th January 2026
29AQI (US)
29AQI (US)
13th January 2026
58AQI (US)
58AQI (US)
14th January 2026
71AQI (US)
71AQI (US)
15th January 2026
38AQI (US)
38AQI (US)
16th January 2026
27AQI (US)
27AQI (US)
17th January 2026
45AQI (US)
45AQI (US)
18th January 2026
61AQI (US)
61AQI (US)
19th January 2026
58AQI (US)
58AQI (US)
20th January 2026
62AQI (US)
62AQI (US)
21st January 2026
74AQI (US)
74AQI (US)
22nd January 2026
49AQI (US)
49AQI (US)
23rd January 2026
53AQI (US)
53AQI (US)
24th January 2026
47AQI (US)
47AQI (US)
25th January 2026
45AQI (US)
45AQI (US)
26th January 2026
47AQI (US)
47AQI (US)
27th January 2026
42AQI (US)
42AQI (US)
28th January 2026
46AQI (US)
46AQI (US)
29th January 2026
51AQI (US)
51AQI (US)
30th January 2026
54AQI (US)
54AQI (US)
31st January 2026
44AQI (US)
44AQI (US)
1st February 2026
46AQI (US)
46AQI (US)
2nd February 2026
47AQI (US)
47AQI (US)
3rd February 2026
49AQI (US)
49AQI (US)
4th February 2026
47AQI (US)
47AQI (US)
5th February 2026
48AQI (US)
48AQI (US)
6th February 2026
43AQI (US)
43AQI (US)
7th February 2026
41AQI (US)
41AQI (US)
8th February 2026
47AQI (US)
47AQI (US)
9th February 2026
45AQI (US)
45AQI (US)
10th February 2026
45AQI (US)
45AQI (US)
11th February 2026
41AQI (US)
41AQI (US)
12th February 2026
42AQI (US)
42AQI (US)
13th February 2026
48AQI (US)
48AQI (US)
14th February 2026
48AQI (US)
48AQI (US)
15th February 2026
38AQI (US)
38AQI (US)
16th February 2026
45AQI (US)
45AQI (US)
17th February 2026
45AQI (US)
45AQI (US)
18th February 2026
41AQI (US)
41AQI (US)
19th February 2026
41AQI (US)
41AQI (US)
20th February 2026
38AQI (US)
38AQI (US)
21st February 2026
34AQI (US)
34AQI (US)
22nd February 2026
38AQI (US)
38AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
47AQI (US)
47AQI (US)
25th February 2026
43AQI (US)
43AQI (US)
26th February 2026
37AQI (US)
37AQI (US)
27th February 2026
38AQI (US)
38AQI (US)
28th February 2026
38AQI (US)
38AQI (US)
1st March 2026
42AQI (US)
42AQI (US)
2nd March 2026
62AQI (US)
62AQI (US)
3rd March 2026
47AQI (US)
47AQI (US)
4th March 2026
48AQI (US)
48AQI (US)
5th March 2026
40AQI (US)
40AQI (US)
6th March 2026
34AQI (US)
34AQI (US)
7th March 2026
41AQI (US)
41AQI (US)
8th March 2026
43AQI (US)
43AQI (US)
9th March 2026
37AQI (US)
37AQI (US)
10th March 2026
37AQI (US)
37AQI (US)
11th March 2026
42AQI (US)
42AQI (US)
12th March 2026
40AQI (US)
40AQI (US)
13th March 2026
40AQI (US)
40AQI (US)
14th March 2026
34AQI (US)
34AQI (US)
15th March 2026
35AQI (US)
35AQI (US)
16th March 2026
39AQI (US)
39AQI (US)
17th March 2026
32AQI (US)
32AQI (US)
18th March 2026
31AQI (US)
31AQI (US)
19th March 2026
37AQI (US)
37AQI (US)
20th March 2026
41AQI (US)
41AQI (US)
21st March 2026
37AQI (US)
37AQI (US)
22nd March 2026
38AQI (US)
38AQI (US)
23rd March 2026
40AQI (US)
40AQI (US)
24th March 2026
38AQI (US)
38AQI (US)
25th March 2026
33AQI (US)
33AQI (US)
26th March 2026
29AQI (US)
29AQI (US)
27th March 2026
30AQI (US)
30AQI (US)
28th March 2026
31AQI (US)
31AQI (US)
29th March 2026
26AQI (US)
26AQI (US)
30th March 2026
26AQI (US)
26AQI (US)
31st March 2026
25AQI (US)
25AQI (US)
1st April 2026
32AQI (US)
32AQI (US)
2nd April 2026
31AQI (US)
31AQI (US)
3rd April 2026
27AQI (US)
27AQI (US)
4th April 2026
31AQI (US)
31AQI (US)
5th April 2026
29AQI (US)
29AQI (US)
6th April 2026
31AQI (US)
31AQI (US)
7th April 2026
27AQI (US)
27AQI (US)
8th April 2026
34AQI (US)
34AQI (US)
9th April 2026
29AQI (US)
29AQI (US)
10th April 2026
31AQI (US)
31AQI (US)
11th April 2026
31AQI (US)
31AQI (US)
12th April 2026
26AQI (US)
26AQI (US)
13th April 2026
31AQI (US)
31AQI (US)
14th April 2026
34AQI (US)
34AQI (US)
15th April 2026
32AQI (US)
32AQI (US)
16th April 2026
29AQI (US)
29AQI (US)
17th April 2026
18th April 2026
29AQI (US)
29AQI (US)
19th April 2026
33AQI (US)
33AQI (US)
20th April 2026
27AQI (US)
27AQI (US)
21st April 2026
27AQI (US)
27AQI (US)
22nd April 2026
23rd April 2026
24AQI (US)
24AQI (US)
24th April 2026
26AQI (US)
26AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
33AQI (US)
33AQI (US)
27th April 2026
27AQI (US)
27AQI (US)
28th April 2026
25AQI (US)
25AQI (US)
29th April 2026
24AQI (US)
24AQI (US)
30th April 2026
27AQI (US)
27AQI (US)
1st May 2026
26AQI (US)
26AQI (US)
2nd May 2026
23AQI (US)
23AQI (US)
3rd May 2026
25AQI (US)
25AQI (US)
4th May 2026
35AQI (US)
35AQI (US)
5th May 2026
36AQI (US)
36AQI (US)
6th May 2026
29AQI (US)
29AQI (US)
7th May 2026
27AQI (US)
27AQI (US)
8th May 2026
27AQI (US)
27AQI (US)
9th May 2026
10th May 2026
31AQI (US)
31AQI (US)
11th May 2026
27AQI (US)
27AQI (US)
12th May 2026
24AQI (US)
24AQI (US)
13th May 2026
27AQI (US)
27AQI (US)
14th May 2026
24AQI (US)
24AQI (US)
15th May 2026
48AQI (US)
48AQI (US)
16th May 2026
51AQI (US)
51AQI (US)
17th May 2026
58AQI (US)
58AQI (US)
18th May 2026
57AQI (US)
57AQI (US)
19th May 2026
56AQI (US)
56AQI (US)
20th May 2026
51AQI (US)
51AQI (US)
21st May 2026
41AQI (US)
41AQI (US)
22nd May 2026
49AQI (US)
49AQI (US)
23rd May 2026
49AQI (US)
49AQI (US)
24th May 2026
47AQI (US)
47AQI (US)
25th May 2026
43AQI (US)
43AQI (US)
26th May 2026
28AQI (US)
28AQI (US)
27th May 2026
28AQI (US)
28AQI (US)
28th May 2026
28AQI (US)
28AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
29AQI (US)
29AQI (US)
1st June 2026
32AQI (US)
32AQI (US)
2nd June 2026
31AQI (US)
31AQI (US)
3rd June 2026
29AQI (US)
29AQI (US)
4th June 2026
26AQI (US)
26AQI (US)
5th June 2026
28AQI (US)
28AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
24AQI (US)
24AQI (US)
8th June 2026
27AQI (US)
27AQI (US)
9th June 2026
26AQI (US)
26AQI (US)
10th June 2026
28AQI (US)
28AQI (US)
11th June 2026
27AQI (US)
27AQI (US)
12th June 2026
27AQI (US)
27AQI (US)
13th June 2026
25AQI (US)
25AQI (US)
14th June 2026
24AQI (US)
24AQI (US)
15th June 2026
26AQI (US)
26AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
28AQI (US)
28AQI (US)
18th June 2026
28AQI (US)
28AQI (US)
19th June 2026
25AQI (US)
25AQI (US)
20th June 2026
24AQI (US)
24AQI (US)
21st June 2026
22AQI (US)
22AQI (US)
22nd June 2026
25AQI (US)
25AQI (US)
23rd June 2026
25AQI (US)
25AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
25AQI (US)
25AQI (US)
26th June 2026
28AQI (US)
28AQI (US)
27th June 2026
30AQI (US)
30AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
25AQI (US)
25AQI (US)
30th June 2026
26AQI (US)
26AQI (US)
1st July 2026
26AQI (US)
26AQI (US)
2nd July 2026
27AQI (US)
27AQI (US)
3rd July 2026
28AQI (US)
28AQI (US)
4th July 2026
25AQI (US)
25AQI (US)
5th July 2026
25AQI (US)
25AQI (US)
6th July 2026
28AQI (US)
28AQI (US)
7th July 2026
29AQI (US)
29AQI (US)
8th July 2026
27AQI (US)
27AQI (US)
9th July 2026
29AQI (US)
29AQI (US)
10th July 2026
33AQI (US)
33AQI (US)
11th July 2026
31AQI (US)
31AQI (US)
12th July 2026
29AQI (US)
29AQI (US)
13th July 2026
31AQI (US)
31AQI (US)
14th July 2026
30AQI (US)
30AQI (US)
15th July 2026
28AQI (US)
28AQI (US)
16th July 2026
29AQI (US)
29AQI (US)
17th July 2026
48AQI (US)
48AQI (US)
18th July 2026
52AQI (US)
52AQI (US)
19th July 2026
40AQI (US)
40AQI (US)
20th July 2026
45AQI (US)
45AQI (US)
21st July 2026
54AQI (US)
54AQI (US)
22nd July 2026
59AQI (US)
59AQI (US)
23rd July 2026
57AQI (US)
57AQI (US)
24th July 2026
54AQI (US)
54AQI (US)
25th July 2026
54AQI (US)
54AQI (US)
26th July 2026
55AQI (US)
55AQI (US)
27th July 2026
51AQI (US)
51AQI (US)
28th July 2026
53AQI (US)
53AQI (US)
29th July 2026
52AQI (US)
52AQI (US)
30th July 2026
59AQI (US)
59AQI (US)
31st July 2026
51AQI (US)
51AQI (US)
1st August 2026
52AQI (US)
52AQI (US)
2nd August 2026
52AQI (US)
52AQI (US)
3rd August 2026
55AQI (US)
55AQI (US)
4th August 2026
70AQI (US)
70AQI (US)
5th August 2026
71AQI (US)
71AQI (US)
6th August 2026
70AQI (US)
70AQI (US)
7th August 2026
64AQI (US)
64AQI (US)
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
42AQI (US)
43AQI (US)
37AQI (US)
29AQI (US)
36AQI (US)
27AQI (US)
40AQI (US)
62AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202637AQI (US)
21
10
28
30
1
28
25
5
30
19
12
7
181
35
Highest AQI (US) recorded in
August62AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202529AQI (US)
20
11
28
31
30
31
30
31
30
1
26
4
29
2
22
8
26
5
334
31
Highest AQI (US) recorded in
January48AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202426AQI (US)
17
2
4
1
3
12
29
31
30
1
25
3
28
3
28
2
24
7
233
17
Highest AQI (US) recorded in
December36AQI (US)
Lowest AQI (US) recorded in
April14AQI (US)
202339AQI (US)
1
2
27
4
27
5
2
Highest AQI (US) recorded in
November100AQI (US)
Lowest AQI (US) recorded in
December33AQI (US)
202128AQI (US)
25
4
27
1
28
3
29
1
31
28
2
30
1
27
4
18
6
243
22
Highest AQI (US) recorded in
September40AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202044AQI (US)
12
1
19
1
13
26
29
30
1
15
5
3
7
19
11
23
5
25
6
211
30
3
7
Highest AQI (US) recorded in
September153AQI (US)
Lowest AQI (US) recorded in
June16AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
44AQI (US)Least Polluted Year Recorded
2024(Avg.)
26AQI (US)Highway 99's annual 2026 AQI (US) (37) shows an average percentage change of 16.1% (worsened AQI (US)) compared to previous years: 2020 (44), 2021 (28), 2023 (39), 2024 (26), 2025 (29).
