Eureka, California, 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
Eureka, California, United States
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Aug 2026
66AQILowest AQI recorded on
16th Aug 2025
18AQISame Day Analysis (10th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 56 of Moderate air quality on the same day.
Day & Night AQI Trend: 10th Aug - 11th Aug 2026
Eureka, California, United States
AQI
Day
Night
.
6 AM10th Aug 2026
8 PM
5 AM11th Aug 2026
Day time
Avg. Highest Time
7PM10th Aug
92AQI
Avg. Lowest Time
11AM10th Aug
45AQI
Night time
Avg. Highest Time
9PM10th Aug
54AQI
Avg. Lowest Time
5AM11th Aug
40AQI
In the last 24 hours,
Eureka's AQI reached its highest point of 92 at 7 PM during the Day, while the lowest point, 40, was recorded at 5 AM during the Night between 10th Aug and 11th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Eureka, California, United States
JulAug
13th - 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 - 09th09th - 10th10th - 11th11th
Day
Night
13th Jul 2026126 AMAQI
13th Jul 2026107 AMAQI
13th Jul 2026368 AMAQI
13th Jul 2026349 AMAQI
13th Jul 20263410 AMAQI
13th Jul 2026811 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026101 PMAQI
13th Jul 2026122 PMAQI
13th Jul 2026103 PMAQI
13th Jul 2026104 PMAQI
13th Jul 2026105 PMAQI
13th Jul 2026106 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026148 PMAQI
13th Jul 2026149 PMAQI
13th Jul 20261410 PMAQI
13th Jul 20261811 PMAQI
14th Jul 20261612 AMAQI
14th Jul 2026141 AMAQI
14th Jul 2026102 AMAQI
14th Jul 2026103 AMAQI
14th Jul 2026104 AMAQI
14th Jul 2026105 AMAQI
12°C9/14°C
14th Jul 2026146 AMAQI
14th Jul 2026107 AMAQI
14th Jul 2026358 AMAQI
14th Jul 2026359 AMAQI
14th Jul 20263410 AMAQI
14th Jul 20263311 AMAQI
14th Jul 2026812 PMAQI
14th Jul 2026341 PMAQI
14th Jul 2026272 PMAQI
14th Jul 2026333 PMAQI
14th Jul 2026324 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026126 PMAQI
14th Jul 2026157 PMAQI
14th Jul 2026138 PMAQI
14th Jul 2026149 PMAQI
14th Jul 20261610 PMAQI
14th Jul 20261411 PMAQI
15th Jul 20261412 AMAQI
15th Jul 2026171 AMAQI
15th Jul 2026182 AMAQI
15th Jul 2026123 AMAQI
15th Jul 2026144 AMAQI
15th Jul 2026145 AMAQI
13°C11/15°C
15th Jul 2026106 AMAQI
15th Jul 2026127 AMAQI
15th Jul 2026148 AMAQI
15th Jul 2026129 AMAQI
15th Jul 20261210 AMAQI
15th Jul 20261211 AMAQI
15th Jul 20261212 PMAQI
15th Jul 2026121 PMAQI
15th Jul 2026122 PMAQI
15th Jul 2026153 PMAQI
15th Jul 2026134 PMAQI
15th Jul 2026135 PMAQI
15th Jul 2026146 PMAQI
15th Jul 2026167 PMAQI
15th Jul 2026188 PMAQI
15th Jul 2026209 PMAQI
15th Jul 20262210 PMAQI
15th Jul 20261711 PMAQI
16th Jul 20261612 AMAQI
16th Jul 2026161 AMAQI
16th Jul 2026162 AMAQI
16th Jul 2026163 AMAQI
16th Jul 2026164 AMAQI
16th Jul 2026135 AMAQI
13°C11/15°C
16th Jul 2026116 AMAQI
16th Jul 2026107 AMAQI
16th Jul 2026128 AMAQI
16th Jul 2026129 AMAQI
16th Jul 20261010 AMAQI
16th Jul 20261011 AMAQI
16th Jul 20261212 PMAQI
16th Jul 2026161 PMAQI
16th Jul 2026142 PMAQI
16th Jul 2026123 PMAQI
16th Jul 2026144 PMAQI
16th Jul 2026145 PMAQI
16th Jul 2026166 PMAQI
16th Jul 2026187 PMAQI
16th Jul 2026188 PMAQI
16th Jul 2026189 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262011 PMAQI
17th Jul 20261712 AMAQI
17th Jul 2026191 AMAQI
17th Jul 2026662 AMAQI
17th Jul 2026643 AMAQI
17th Jul 2026604 AMAQI
17th Jul 2026625 AMAQI
14°C10/16°C
17th Jul 2026586 AMAQI
17th Jul 2026647 AMAQI
17th Jul 2026608 AMAQI
17th Jul 2026609 AMAQI
17th Jul 20265810 AMAQI
17th Jul 20266011 AMAQI
17th Jul 20265912 PMAQI
17th Jul 2026541 PMAQI
17th Jul 2026682 PMAQI
17th Jul 2026643 PMAQI
17th Jul 2026664 PMAQI
17th Jul 2026625 PMAQI
17th Jul 2026606 PMAQI
17th Jul 2026607 PMAQI
17th Jul 2026528 PMAQI
17th Jul 2026619 PMAQI
17th Jul 20266010 PMAQI
17th Jul 20266011 PMAQI
18th Jul 20265812 AMAQI
18th Jul 2026541 AMAQI
18th Jul 2026562 AMAQI
18th Jul 2026513 AMAQI
18th Jul 2026374 AMAQI
18th Jul 2026365 AMAQI
14°C12/17°C
18th Jul 2026526 AMAQI
18th Jul 2026647 AMAQI
18th Jul 2026708 AMAQI
18th Jul 2026569 AMAQI
18th Jul 20264610 AMAQI
18th Jul 20263911 AMAQI
18th Jul 20267712 PMAQI
18th Jul 2026561 PMAQI
18th Jul 2026522 PMAQI
18th Jul 2026503 PMAQI
18th Jul 2026464 PMAQI
18th Jul 2026505 PMAQI
18th Jul 2026526 PMAQI
18th Jul 2026507 PMAQI
18th Jul 2026498 PMAQI
18th Jul 2026559 PMAQI
18th Jul 20264410 PMAQI
18th Jul 20265311 PMAQI
19th Jul 20265612 AMAQI
19th Jul 2026541 AMAQI
19th Jul 2026532 AMAQI
19th Jul 2026563 AMAQI
19th Jul 2026534 AMAQI
19th Jul 2026445 AMAQI
14°C13/17°C
19th Jul 2026376 AMAQI
19th Jul 2026447 AMAQI
19th Jul 2026528 AMAQI
19th Jul 2026529 AMAQI
19th Jul 20265310 AMAQI
19th Jul 20264811 AMAQI
19th Jul 20264412 PMAQI
19th Jul 2026441 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026453 PMAQI
19th Jul 2026404 PMAQI
19th Jul 2026785 PMAQI
19th Jul 2026526 PMAQI
19th Jul 2026567 PMAQI
19th Jul 2026508 PMAQI
19th Jul 2026469 PMAQI
19th Jul 20265410 PMAQI
19th Jul 20266111 PMAQI
20th Jul 20267412 AMAQI
20th Jul 2026591 AMAQI
20th Jul 2026712 AMAQI
20th Jul 2026693 AMAQI
20th Jul 2026694 AMAQI
20th Jul 2026665 AMAQI
14°C12/17°C
20th Jul 2026426 AMAQI
20th Jul 2026437 AMAQI
20th Jul 2026518 AMAQI
20th Jul 2026569 AMAQI
20th Jul 20265710 AMAQI
20th Jul 20265311 AMAQI
20th Jul 20265212 PMAQI
20th Jul 2026541 PMAQI
20th Jul 2026472 PMAQI
20th Jul 2026473 PMAQI
20th Jul 2026734 PMAQI
20th Jul 2026585 PMAQI
20th Jul 2026496 PMAQI
20th Jul 2026427 PMAQI
20th Jul 2026469 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20264111 PMAQI
21st Jul 20264312 AMAQI
21st Jul 2026461 AMAQI
21st Jul 2026582 AMAQI
21st Jul 2026643 AMAQI
21st Jul 2026514 AMAQI
21st Jul 2026435 AMAQI
14°C12/19°C
21st Jul 2026416 AMAQI
21st Jul 2026417 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026369 AMAQI
21st Jul 20264310 AMAQI
21st Jul 20263611 AMAQI
21st Jul 20265412 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026523 PMAQI
21st Jul 2026434 PMAQI
21st Jul 2026605 PMAQI
21st Jul 2026386 PMAQI
21st Jul 2026547 PMAQI
21st Jul 2026568 PMAQI
21st Jul 2026619 PMAQI
21st Jul 20266010 PMAQI
21st Jul 20266011 PMAQI
22nd Jul 20265812 AMAQI
22nd Jul 2026431 AMAQI
22nd Jul 2026582 AMAQI
22nd Jul 2026543 AMAQI
22nd Jul 2026574 AMAQI
22nd Jul 2026465 AMAQI
15°C11/22°C
22nd Jul 2026606 AMAQI
22nd Jul 2026507 AMAQI
22nd Jul 2026478 AMAQI
22nd Jul 2026469 AMAQI
22nd Jul 20264110 AMAQI
22nd Jul 20264511 AMAQI
22nd Jul 20265712 PMAQI
22nd Jul 2026461 PMAQI
22nd Jul 20261472 PMAQI
22nd Jul 2026683 PMAQI
22nd Jul 2026544 PMAQI
22nd Jul 2026545 PMAQI
22nd Jul 2026546 PMAQI
22nd Jul 2026637 PMAQI
22nd Jul 2026728 PMAQI
22nd Jul 2026509 PMAQI
22nd Jul 20268210 PMAQI
22nd Jul 20267311 PMAQI
23rd Jul 20266612 AMAQI
23rd Jul 2026421 AMAQI
23rd Jul 2026562 AMAQI
23rd Jul 2026523 AMAQI
23rd Jul 2026544 AMAQI
23rd Jul 2026525 AMAQI
17°C12/24°C
23rd Jul 2026446 AMAQI
23rd Jul 2026407 AMAQI
23rd Jul 2026448 AMAQI
23rd Jul 2026419 AMAQI
23rd Jul 20265010 AMAQI
23rd Jul 20263411 AMAQI
23rd Jul 20264112 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026412 PMAQI
23rd Jul 2026323 PMAQI
23rd Jul 2026414 PMAQI
23rd Jul 2026305 PMAQI
23rd Jul 2026276 PMAQI
23rd Jul 2026587 PMAQI
23rd Jul 2026388 PMAQI
23rd Jul 2026369 PMAQI
23rd Jul 20264910 PMAQI
23rd Jul 20265211 PMAQI
24th Jul 20263712 AMAQI
24th Jul 2026521 AMAQI
24th Jul 2026562 AMAQI
24th Jul 2026543 AMAQI
24th Jul 2026544 AMAQI
24th Jul 2026565 AMAQI
16°C14/18°C
24th Jul 2026526 AMAQI
24th Jul 2026507 AMAQI
24th Jul 2026568 AMAQI
24th Jul 2026529 AMAQI
24th Jul 20265210 AMAQI
24th Jul 20265211 AMAQI
24th Jul 20265212 PMAQI
24th Jul 2026361 PMAQI
24th Jul 2026542 PMAQI
24th Jul 2026503 PMAQI
24th Jul 2026544 PMAQI
24th Jul 2026525 PMAQI
24th Jul 2026406 PMAQI
24th Jul 2026547 PMAQI
24th Jul 2026608 PMAQI
24th Jul 2026579 PMAQI
24th Jul 20265410 PMAQI
24th Jul 20266711 PMAQI
25th Jul 20264612 AMAQI
25th Jul 2026501 AMAQI
25th Jul 2026502 AMAQI
25th Jul 2026403 AMAQI
25th Jul 2026524 AMAQI
25th Jul 2026445 AMAQI
15°C11/18°C
25th Jul 2026426 AMAQI
25th Jul 2026417 AMAQI
25th Jul 2026468 AMAQI
25th Jul 2026509 AMAQI
25th Jul 20264610 AMAQI
25th Jul 20265211 AMAQI
25th Jul 20265012 PMAQI
25th Jul 2026481 PMAQI
25th Jul 2026462 PMAQI
25th Jul 2026503 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026465 PMAQI
25th Jul 2026326 PMAQI
25th Jul 2026427 PMAQI
25th Jul 2026108 PMAQI
25th Jul 2026109 PMAQI
25th Jul 20264210 PMAQI
25th Jul 20261611 PMAQI
26th Jul 20264712 AMAQI
26th Jul 2026471 AMAQI
26th Jul 2026502 AMAQI
26th Jul 2026493 AMAQI
26th Jul 2026544 AMAQI
26th Jul 2026545 AMAQI
16°C11/20°C
26th Jul 2026516 AMAQI
26th Jul 2026487 AMAQI
26th Jul 2026468 AMAQI
26th Jul 2026189 AMAQI
26th Jul 20264610 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20264212 PMAQI
26th Jul 2026341 PMAQI
26th Jul 2026382 PMAQI
26th Jul 2026503 PMAQI
26th Jul 2026424 PMAQI
26th Jul 2026265 PMAQI
26th Jul 2026456 PMAQI
26th Jul 2026447 PMAQI
26th Jul 2026468 PMAQI
26th Jul 2026509 PMAQI
26th Jul 20264610 PMAQI
26th Jul 20265811 PMAQI
27th Jul 20266412 AMAQI
27th Jul 2026551 AMAQI
27th Jul 2026412 AMAQI
27th Jul 2026403 AMAQI
27th Jul 2026424 AMAQI
27th Jul 2026475 AMAQI
16°C14/18°C
27th Jul 2026496 AMAQI
27th Jul 2026507 AMAQI
27th Jul 2026528 AMAQI
27th Jul 2026389 AMAQI
27th Jul 20263410 AMAQI
27th Jul 20265011 AMAQI
27th Jul 20264612 PMAQI
27th Jul 2026461 PMAQI
27th Jul 2026222 PMAQI
27th Jul 2026203 PMAQI
27th Jul 2026244 PMAQI
27th Jul 2026265 PMAQI
27th Jul 2026306 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026228 PMAQI
27th Jul 2026329 PMAQI
27th Jul 20263310 PMAQI
27th Jul 20265011 PMAQI
28th Jul 20265012 AMAQI
28th Jul 2026521 AMAQI
28th Jul 2026502 AMAQI
28th Jul 2026413 AMAQI
28th Jul 2026464 AMAQI
28th Jul 2026525 AMAQI
15°C13/19°C
28th Jul 2026426 AMAQI
28th Jul 2026527 AMAQI
28th Jul 2026448 AMAQI
28th Jul 2026529 AMAQI
28th Jul 20264810 AMAQI
28th Jul 20265411 AMAQI
28th Jul 20265012 PMAQI
28th Jul 2026461 PMAQI
28th Jul 2026372 PMAQI
28th Jul 2026503 PMAQI
28th Jul 2026504 PMAQI
28th Jul 2026345 PMAQI
28th Jul 2026446 PMAQI
28th Jul 2026507 PMAQI
28th Jul 2026528 PMAQI
28th Jul 2026529 PMAQI
28th Jul 20264210 PMAQI
28th Jul 20265011 PMAQI
29th Jul 20265212 AMAQI
29th Jul 2026551 AMAQI
29th Jul 2026502 AMAQI
29th Jul 2026523 AMAQI
29th Jul 2026464 AMAQI
29th Jul 2026525 AMAQI
15°C14/18°C
29th Jul 2026526 AMAQI
29th Jul 2026527 AMAQI
29th Jul 2026528 AMAQI
29th Jul 2026419 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20265411 AMAQI
29th Jul 20265212 PMAQI
29th Jul 2026501 PMAQI
29th Jul 2026512 PMAQI
29th Jul 2026513 PMAQI
29th Jul 2026284 PMAQI
29th Jul 2026565 PMAQI
29th Jul 2026546 PMAQI
29th Jul 2026527 PMAQI
29th Jul 2026368 PMAQI
29th Jul 2026499 PMAQI
29th Jul 20264610 PMAQI
29th Jul 20264011 PMAQI
30th Jul 20264812 AMAQI
30th Jul 2026461 AMAQI
30th Jul 2026462 AMAQI
30th Jul 2026483 AMAQI
30th Jul 2026474 AMAQI
30th Jul 2026415 AMAQI
15°C14/17°C
30th Jul 2026506 AMAQI
30th Jul 2026447 AMAQI
30th Jul 2026528 AMAQI
30th Jul 2026549 AMAQI
30th Jul 20264710 AMAQI
30th Jul 20264611 AMAQI
30th Jul 20265012 PMAQI
30th Jul 2026491 PMAQI
30th Jul 2026442 PMAQI
30th Jul 2026473 PMAQI
30th Jul 2026464 PMAQI
30th Jul 2026515 PMAQI
30th Jul 2026526 PMAQI
30th Jul 2026567 PMAQI
30th Jul 2026568 PMAQI
30th Jul 2026529 PMAQI
30th Jul 20265210 PMAQI
30th Jul 20265011 PMAQI
31st Jul 20264412 AMAQI
31st Jul 2026491 AMAQI
31st Jul 2026522 AMAQI
31st Jul 2026603 AMAQI
31st Jul 2026554 AMAQI
31st Jul 2026535 AMAQI
15°C13/18°C
31st Jul 2026636 AMAQI
31st Jul 2026517 AMAQI
31st Jul 2026348 AMAQI
31st Jul 2026479 AMAQI
31st Jul 20263410 AMAQI
31st Jul 20264811 AMAQI
31st Jul 20263212 PMAQI
31st Jul 2026401 PMAQI
31st Jul 2026402 PMAQI
31st Jul 2026383 PMAQI
31st Jul 2026254 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026326 PMAQI
31st Jul 2026247 PMAQI
31st Jul 2026408 PMAQI
31st Jul 2026429 PMAQI
31st Jul 20265410 PMAQI
31st Jul 20265111 PMAQI
1st Aug 20264912 AMAQI
1st Aug 2026331 AMAQI
1st Aug 2026382 AMAQI
1st Aug 2026523 AMAQI
1st Aug 2026524 AMAQI
1st Aug 2026505 AMAQI
15°C12/19°C
1st Aug 2026416 AMAQI
1st Aug 2026407 AMAQI
1st Aug 2026458 AMAQI
1st Aug 2026529 AMAQI
1st Aug 20265010 AMAQI
1st Aug 20265011 AMAQI
1st Aug 20264112 PMAQI
1st Aug 2026521 PMAQI
1st Aug 2026372 PMAQI
1st Aug 2026503 PMAQI
1st Aug 2026464 PMAQI
1st Aug 2026355 PMAQI
1st Aug 2026346 PMAQI
1st Aug 2026467 PMAQI
1st Aug 2026468 PMAQI
1st Aug 2026399 PMAQI
1st Aug 20263410 PMAQI
1st Aug 20264211 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026321 AMAQI
2nd Aug 2026422 AMAQI
2nd Aug 2026433 AMAQI
2nd Aug 2026444 AMAQI
2nd Aug 2026465 AMAQI
16°C14/19°C
2nd Aug 2026426 AMAQI
2nd Aug 2026447 AMAQI
2nd Aug 2026428 AMAQI
2nd Aug 2026509 AMAQI
2nd Aug 20265210 AMAQI
2nd Aug 20265111 AMAQI
2nd Aug 20265012 PMAQI
2nd Aug 2026521 PMAQI
2nd Aug 2026522 PMAQI
2nd Aug 2026513 PMAQI
2nd Aug 2026504 PMAQI
2nd Aug 2026435 PMAQI
2nd Aug 2026476 PMAQI
2nd Aug 2026457 PMAQI
2nd Aug 2026478 PMAQI
2nd Aug 2026549 PMAQI
2nd Aug 20265610 PMAQI
2nd Aug 20265411 PMAQI
3rd Aug 20265712 AMAQI
3rd Aug 2026511 AMAQI
3rd Aug 2026562 AMAQI
3rd Aug 2026583 AMAQI
3rd Aug 2026564 AMAQI
3rd Aug 2026565 AMAQI
16°C12/20°C
3rd Aug 2026516 AMAQI
3rd Aug 2026437 AMAQI
3rd Aug 2026488 AMAQI
3rd Aug 2026509 AMAQI
3rd Aug 20265210 AMAQI
3rd Aug 20267111 AMAQI
3rd Aug 20265812 PMAQI
3rd Aug 2026531 PMAQI
3rd Aug 2026522 PMAQI
3rd Aug 2026483 PMAQI
3rd Aug 2026484 PMAQI
3rd Aug 2026565 PMAQI
3rd Aug 2026496 PMAQI
3rd Aug 2026487 PMAQI
3rd Aug 2026508 PMAQI
3rd Aug 2026509 PMAQI
3rd Aug 20265410 PMAQI
3rd Aug 20265411 PMAQI
4th Aug 20265212 AMAQI
4th Aug 2026541 AMAQI
4th Aug 2026522 AMAQI
4th Aug 2026523 AMAQI
4th Aug 2026534 AMAQI
4th Aug 2026565 AMAQI
15°C11/21°C
4th Aug 2026516 AMAQI
4th Aug 2026497 AMAQI
4th Aug 2026518 AMAQI
4th Aug 2026549 AMAQI
4th Aug 20265210 AMAQI
4th Aug 20265611 AMAQI
4th Aug 20265812 PMAQI
4th Aug 2026621 PMAQI
4th Aug 2026602 PMAQI
4th Aug 2026603 PMAQI
4th Aug 2026584 PMAQI
4th Aug 2026565 PMAQI
4th Aug 2026596 PMAQI
4th Aug 2026627 PMAQI
4th Aug 2026628 PMAQI
4th Aug 2026629 PMAQI
4th Aug 20265710 PMAQI
4th Aug 20265611 PMAQI
5th Aug 20265812 AMAQI
5th Aug 2026601 AMAQI
5th Aug 2026602 AMAQI
5th Aug 2026563 AMAQI
5th Aug 2026604 AMAQI
5th Aug 2026565 AMAQI
14°C10/19°C
5th Aug 2026346 AMAQI
5th Aug 2026607 AMAQI
5th Aug 2026608 AMAQI
5th Aug 2026539 AMAQI
5th Aug 20263910 AMAQI
5th Aug 20266011 AMAQI
5th Aug 20266812 PMAQI
5th Aug 2026721 PMAQI
5th Aug 2026452 PMAQI
5th Aug 2026503 PMAQI
5th Aug 2026364 PMAQI
5th Aug 2026425 PMAQI
5th Aug 2026376 PMAQI
5th Aug 2026377 PMAQI
5th Aug 2026418 PMAQI
5th Aug 2026509 PMAQI
5th Aug 20265010 PMAQI
5th Aug 20265011 PMAQI
6th Aug 20263912 AMAQI
6th Aug 2026721 AMAQI
6th Aug 2026702 AMAQI
6th Aug 2026673 AMAQI
6th Aug 2026754 AMAQI
6th Aug 2026755 AMAQI
14°C12/16°C
6th Aug 2026686 AMAQI
6th Aug 2026667 AMAQI
6th Aug 2026748 AMAQI
6th Aug 2026769 AMAQI
6th Aug 20266810 AMAQI
6th Aug 20267611 AMAQI
6th Aug 20266712 PMAQI
6th Aug 2026761 PMAQI
6th Aug 2026702 PMAQI
6th Aug 2026373 PMAQI
6th Aug 2026374 PMAQI
6th Aug 2026445 PMAQI
6th Aug 2026446 PMAQI
6th Aug 2026527 PMAQI
6th Aug 2026448 PMAQI
6th Aug 2026459 PMAQI
6th Aug 20264910 PMAQI
6th Aug 20264711 PMAQI
7th Aug 20263912 AMAQI
7th Aug 2026371 AMAQI
7th Aug 2026662 AMAQI
7th Aug 2026763 AMAQI
7th Aug 2026744 AMAQI
7th Aug 2026785 AMAQI
14°C13/17°C
7th Aug 2026766 AMAQI
7th Aug 2026787 AMAQI
7th Aug 2026788 AMAQI
7th Aug 2026869 AMAQI
7th Aug 20267810 AMAQI
7th Aug 20267311 AMAQI
7th Aug 20267212 PMAQI
7th Aug 2026721 PMAQI
7th Aug 2026722 PMAQI
7th Aug 2026673 PMAQI
7th Aug 2026714 PMAQI
7th Aug 2026385 PMAQI
7th Aug 2026596 PMAQI
7th Aug 2026567 PMAQI
7th Aug 2026598 PMAQI
7th Aug 2026569 PMAQI
7th Aug 20265510 PMAQI
7th Aug 20265511 PMAQI
8th Aug 20266212 AMAQI
8th Aug 2026501 AMAQI
8th Aug 2026452 AMAQI
8th Aug 2026433 AMAQI
8th Aug 2026374 AMAQI
8th Aug 2026345 AMAQI
14°C12/15°C
8th Aug 2026646 AMAQI
8th Aug 2026647 AMAQI
8th Aug 2026668 AMAQI
8th Aug 2026669 AMAQI
8th Aug 20266510 AMAQI
8th Aug 20266411 AMAQI
8th Aug 20265612 PMAQI
8th Aug 2026581 PMAQI
8th Aug 2026562 PMAQI
8th Aug 2026373 PMAQI
8th Aug 2026384 PMAQI
8th Aug 2026365 PMAQI
8th Aug 2026516 PMAQI
8th Aug 2026577 PMAQI
8th Aug 2026448 PMAQI
8th Aug 2026409 PMAQI
8th Aug 20267410 PMAQI
8th Aug 20264211 PMAQI
9th Aug 20264912 AMAQI
9th Aug 2026441 AMAQI
9th Aug 2026442 AMAQI
9th Aug 2026403 AMAQI
9th Aug 2026404 AMAQI
9th Aug 2026475 AMAQI
14°C13/16°C
9th Aug 2026406 AMAQI
9th Aug 2026467 AMAQI
9th Aug 2026418 AMAQI
9th Aug 2026569 AMAQI
9th Aug 20265110 AMAQI
9th Aug 20265111 AMAQI
9th Aug 20265412 PMAQI
9th Aug 2026661 PMAQI
9th Aug 2026642 PMAQI
9th Aug 2026683 PMAQI
9th Aug 2026684 PMAQI
9th Aug 2026655 PMAQI
9th Aug 2026626 PMAQI
9th Aug 2026587 PMAQI
9th Aug 2026548 PMAQI
9th Aug 2026489 PMAQI
9th Aug 20264310 PMAQI
9th Aug 20265411 PMAQI
10th Aug 20264112 AMAQI
10th Aug 2026431 AMAQI
10th Aug 2026462 AMAQI
10th Aug 2026413 AMAQI
10th Aug 2026464 AMAQI
10th Aug 2026495 AMAQI
14°C11/16°C
10th Aug 2026546 AMAQI
10th Aug 2026507 AMAQI
10th Aug 2026478 AMAQI
10th Aug 2026489 AMAQI
10th Aug 20264610 AMAQI
10th Aug 20264511 AMAQI
10th Aug 20265212 PMAQI
10th Aug 2026491 PMAQI
10th Aug 2026702 PMAQI
10th Aug 2026743 PMAQI
10th Aug 2026844 PMAQI
10th Aug 2026815 PMAQI
10th Aug 2026826 PMAQI
10th Aug 2026927 PMAQI
10th Aug 2026548 PMAQI
10th Aug 2026549 PMAQI
10th Aug 20265110 PMAQI
10th Aug 20264711 PMAQI
11th Aug 20264512 AMAQI
11th Aug 2026421 AMAQI
11th Aug 2026422 AMAQI
11th Aug 2026413 AMAQI
11th Aug 2026434 AMAQI
11th Aug 2026405 AMAQI
14°C11/18°C
11th Aug 2026476 AMAQI
6 AM11th Aug 2026467 AMAQI
11th Aug 2026468 AMAQI
11th Aug 2026419 AMAQI
11th Aug 20264110 AMAQI
11th Aug 20264111 AMAQI
11th Aug 20265212 PMAQI
11th Aug 2026461 PMAQI
1 PM11th Aug 2026402 PMAQI
11th Aug 2026613 PMAQI
11th Aug 2026414 PMAQI
11th Aug 2026505 PMAQI
11th Aug 2026536 PMAQI
11th Aug 2026567 PMAQI
8 PM
1 AM
5 AM
14°C10/18°C
Day time
Avg. Highest Time
2 PM
49AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 PM - 6 PM
44AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 2 PM (Avg. 49), while the lowest AQI was between 4 PM to 6 PM (Avg. 44).
Night time
Avg. Highest Time
2 AM - 5 AM
47AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 1 AM
45AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 47), while the lowest AQI was between 12 AM to 1 AM (Avg. 45).
2026 Days Vs Air Quality
Eureka, California, United States
2026
90%
197
10%
22
Total number of days with different AQI categories in last 223 days in 2026 (142 days remaining)
Good
197 DaysModerate
22 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 223 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
Eureka, California, 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
53AQI (US)
53AQI (US)
2nd January 2026
40AQI (US)
40AQI (US)
3rd January 2026
18AQI (US)
18AQI (US)
4th January 2026
12AQI (US)
12AQI (US)
5th January 2026
18AQI (US)
18AQI (US)
6th January 2026
26AQI (US)
26AQI (US)
7th January 2026
22AQI (US)
22AQI (US)
8th January 2026
30AQI (US)
30AQI (US)
9th January 2026
41AQI (US)
41AQI (US)
10th January 2026
51AQI (US)
51AQI (US)
11th January 2026
42AQI (US)
42AQI (US)
12th January 2026
46AQI (US)
46AQI (US)
13th January 2026
47AQI (US)
47AQI (US)
14th January 2026
55AQI (US)
55AQI (US)
15th January 2026
47AQI (US)
47AQI (US)
16th January 2026
39AQI (US)
39AQI (US)
17th January 2026
42AQI (US)
42AQI (US)
18th January 2026
53AQI (US)
53AQI (US)
19th January 2026
42AQI (US)
42AQI (US)
20th January 2026
50AQI (US)
50AQI (US)
21st January 2026
55AQI (US)
55AQI (US)
22nd January 2026
38AQI (US)
38AQI (US)
23rd January 2026
36AQI (US)
36AQI (US)
24th January 2026
34AQI (US)
34AQI (US)
25th January 2026
30AQI (US)
30AQI (US)
26th January 2026
31AQI (US)
31AQI (US)
27th January 2026
30AQI (US)
30AQI (US)
28th January 2026
40AQI (US)
40AQI (US)
29th January 2026
34AQI (US)
34AQI (US)
30th January 2026
46AQI (US)
46AQI (US)
31st January 2026
32AQI (US)
32AQI (US)
1st February 2026
32AQI (US)
32AQI (US)
2nd February 2026
37AQI (US)
37AQI (US)
3rd February 2026
32AQI (US)
32AQI (US)
4th February 2026
32AQI (US)
32AQI (US)
5th February 2026
37AQI (US)
37AQI (US)
6th February 2026
35AQI (US)
35AQI (US)
7th February 2026
32AQI (US)
32AQI (US)
8th February 2026
38AQI (US)
38AQI (US)
9th February 2026
33AQI (US)
33AQI (US)
10th February 2026
34AQI (US)
34AQI (US)
11th February 2026
28AQI (US)
28AQI (US)
12th February 2026
27AQI (US)
27AQI (US)
13th February 2026
28AQI (US)
28AQI (US)
14th February 2026
30AQI (US)
30AQI (US)
15th February 2026
42AQI (US)
42AQI (US)
16th February 2026
34AQI (US)
34AQI (US)
17th February 2026
38AQI (US)
38AQI (US)
18th February 2026
38AQI (US)
38AQI (US)
19th February 2026
31AQI (US)
31AQI (US)
20th February 2026
34AQI (US)
34AQI (US)
21st February 2026
36AQI (US)
36AQI (US)
22nd February 2026
35AQI (US)
35AQI (US)
23rd February 2026
36AQI (US)
36AQI (US)
24th February 2026
36AQI (US)
36AQI (US)
25th February 2026
33AQI (US)
33AQI (US)
26th February 2026
24AQI (US)
24AQI (US)
27th February 2026
18AQI (US)
18AQI (US)
28th February 2026
26AQI (US)
26AQI (US)
1st March 2026
37AQI (US)
37AQI (US)
2nd March 2026
48AQI (US)
48AQI (US)
3rd March 2026
44AQI (US)
44AQI (US)
4th March 2026
36AQI (US)
36AQI (US)
5th March 2026
26AQI (US)
26AQI (US)
6th March 2026
19AQI (US)
19AQI (US)
7th March 2026
24AQI (US)
24AQI (US)
8th March 2026
29AQI (US)
29AQI (US)
9th March 2026
19AQI (US)
19AQI (US)
10th March 2026
22AQI (US)
22AQI (US)
11th March 2026
26AQI (US)
26AQI (US)
12th March 2026
22AQI (US)
22AQI (US)
13th March 2026
32AQI (US)
32AQI (US)
14th March 2026
26AQI (US)
26AQI (US)
15th March 2026
20AQI (US)
20AQI (US)
16th March 2026
24AQI (US)
24AQI (US)
17th March 2026
26AQI (US)
26AQI (US)
18th March 2026
26AQI (US)
26AQI (US)
19th March 2026
27AQI (US)
27AQI (US)
20th March 2026
29AQI (US)
29AQI (US)
21st March 2026
26AQI (US)
26AQI (US)
22nd March 2026
27AQI (US)
27AQI (US)
23rd March 2026
25AQI (US)
25AQI (US)
24th March 2026
26AQI (US)
26AQI (US)
25th March 2026
24AQI (US)
24AQI (US)
26th March 2026
24AQI (US)
24AQI (US)
27th March 2026
21AQI (US)
21AQI (US)
28th March 2026
23AQI (US)
23AQI (US)
29th March 2026
19AQI (US)
19AQI (US)
30th March 2026
19AQI (US)
19AQI (US)
31st March 2026
18AQI (US)
18AQI (US)
1st April 2026
26AQI (US)
26AQI (US)
2nd April 2026
19AQI (US)
19AQI (US)
3rd April 2026
22AQI (US)
22AQI (US)
4th April 2026
25AQI (US)
25AQI (US)
5th April 2026
24AQI (US)
24AQI (US)
6th April 2026
25AQI (US)
25AQI (US)
7th April 2026
22AQI (US)
22AQI (US)
8th April 2026
26AQI (US)
26AQI (US)
9th April 2026
25AQI (US)
25AQI (US)
10th April 2026
30AQI (US)
30AQI (US)
11th April 2026
33AQI (US)
33AQI (US)
12th April 2026
20AQI (US)
20AQI (US)
13th April 2026
26AQI (US)
26AQI (US)
14th April 2026
24AQI (US)
24AQI (US)
15th April 2026
24AQI (US)
24AQI (US)
16th April 2026
24AQI (US)
24AQI (US)
17th April 2026
18th April 2026
24AQI (US)
24AQI (US)
19th April 2026
17AQI (US)
17AQI (US)
20th April 2026
22AQI (US)
22AQI (US)
21st April 2026
27AQI (US)
27AQI (US)
22nd April 2026
23rd April 2026
20AQI (US)
20AQI (US)
24th April 2026
20AQI (US)
20AQI (US)
25th April 2026
16AQI (US)
16AQI (US)
26th April 2026
19AQI (US)
19AQI (US)
27th April 2026
18AQI (US)
18AQI (US)
28th April 2026
20AQI (US)
20AQI (US)
29th April 2026
24AQI (US)
24AQI (US)
30th April 2026
22AQI (US)
22AQI (US)
1st May 2026
19AQI (US)
19AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
19AQI (US)
19AQI (US)
4th May 2026
25AQI (US)
25AQI (US)
5th May 2026
29AQI (US)
29AQI (US)
6th May 2026
17AQI (US)
17AQI (US)
7th May 2026
19AQI (US)
19AQI (US)
8th May 2026
22AQI (US)
22AQI (US)
9th May 2026
10th May 2026
26AQI (US)
26AQI (US)
11th May 2026
20AQI (US)
20AQI (US)
12th May 2026
24AQI (US)
24AQI (US)
13th May 2026
22AQI (US)
22AQI (US)
14th May 2026
18AQI (US)
18AQI (US)
15th May 2026
37AQI (US)
37AQI (US)
16th May 2026
48AQI (US)
48AQI (US)
17th May 2026
56AQI (US)
56AQI (US)
18th May 2026
54AQI (US)
54AQI (US)
19th May 2026
54AQI (US)
54AQI (US)
20th May 2026
50AQI (US)
50AQI (US)
21st May 2026
41AQI (US)
41AQI (US)
22nd May 2026
48AQI (US)
48AQI (US)
23rd May 2026
48AQI (US)
48AQI (US)
24th May 2026
42AQI (US)
42AQI (US)
25th May 2026
42AQI (US)
42AQI (US)
26th May 2026
22AQI (US)
22AQI (US)
27th May 2026
33AQI (US)
33AQI (US)
28th May 2026
24AQI (US)
24AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
26AQI (US)
26AQI (US)
31st May 2026
26AQI (US)
26AQI (US)
1st June 2026
30AQI (US)
30AQI (US)
2nd June 2026
20AQI (US)
20AQI (US)
3rd June 2026
20AQI (US)
20AQI (US)
4th June 2026
20AQI (US)
20AQI (US)
5th June 2026
16AQI (US)
16AQI (US)
6th June 2026
14AQI (US)
14AQI (US)
7th June 2026
18AQI (US)
18AQI (US)
8th June 2026
24AQI (US)
24AQI (US)
9th June 2026
20AQI (US)
20AQI (US)
10th June 2026
18AQI (US)
18AQI (US)
11th June 2026
20AQI (US)
20AQI (US)
12th June 2026
25AQI (US)
25AQI (US)
13th June 2026
25AQI (US)
25AQI (US)
14th June 2026
20AQI (US)
20AQI (US)
15th June 2026
26AQI (US)
26AQI (US)
16th June 2026
23AQI (US)
23AQI (US)
17th June 2026
14AQI (US)
14AQI (US)
18th June 2026
16AQI (US)
16AQI (US)
19th June 2026
18AQI (US)
18AQI (US)
20th June 2026
19AQI (US)
19AQI (US)
21st June 2026
21AQI (US)
21AQI (US)
22nd June 2026
15AQI (US)
15AQI (US)
23rd June 2026
19AQI (US)
19AQI (US)
24th June 2026
18AQI (US)
18AQI (US)
25th June 2026
17AQI (US)
17AQI (US)
26th June 2026
26AQI (US)
26AQI (US)
27th June 2026
20AQI (US)
20AQI (US)
28th June 2026
18AQI (US)
18AQI (US)
29th June 2026
28AQI (US)
28AQI (US)
30th June 2026
32AQI (US)
32AQI (US)
1st July 2026
32AQI (US)
32AQI (US)
2nd July 2026
28AQI (US)
28AQI (US)
3rd July 2026
19AQI (US)
19AQI (US)
4th July 2026
22AQI (US)
22AQI (US)
5th July 2026
18AQI (US)
18AQI (US)
6th July 2026
20AQI (US)
20AQI (US)
7th July 2026
12AQI (US)
12AQI (US)
8th July 2026
19AQI (US)
19AQI (US)
9th July 2026
20AQI (US)
20AQI (US)
10th July 2026
18AQI (US)
18AQI (US)
11th July 2026
30AQI (US)
30AQI (US)
12th July 2026
14AQI (US)
14AQI (US)
13th July 2026
17AQI (US)
17AQI (US)
14th July 2026
20AQI (US)
20AQI (US)
15th July 2026
14AQI (US)
14AQI (US)
16th July 2026
15AQI (US)
15AQI (US)
17th July 2026
57AQI (US)
57AQI (US)
18th July 2026
52AQI (US)
52AQI (US)
19th July 2026
51AQI (US)
51AQI (US)
20th July 2026
55AQI (US)
55AQI (US)
21st July 2026
49AQI (US)
49AQI (US)
22nd July 2026
59AQI (US)
59AQI (US)
23rd July 2026
44AQI (US)
44AQI (US)
24th July 2026
52AQI (US)
52AQI (US)
25th July 2026
42AQI (US)
42AQI (US)
26th July 2026
45AQI (US)
45AQI (US)
27th July 2026
39AQI (US)
39AQI (US)
28th July 2026
48AQI (US)
48AQI (US)
29th July 2026
48AQI (US)
48AQI (US)
30th July 2026
49AQI (US)
49AQI (US)
31st July 2026
43AQI (US)
43AQI (US)
1st August 2026
44AQI (US)
44AQI (US)
2nd August 2026
48AQI (US)
48AQI (US)
3rd August 2026
53AQI (US)
53AQI (US)
4th August 2026
56AQI (US)
56AQI (US)
5th August 2026
52AQI (US)
52AQI (US)
6th August 2026
60AQI (US)
60AQI (US)
7th August 2026
66AQI (US)
66AQI (US)
8th August 2026
52AQI (US)
52AQI (US)
9th August 2026
52AQI (US)
52AQI (US)
10th August 2026
56AQI (US)
56AQI (US)
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
38AQI (US)
33AQI (US)
26AQI (US)
23AQI (US)
32AQI (US)
21AQI (US)
34AQI (US)
54AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202631AQI (US)
26
5
28
31
28
27
3
30
25
6
2
8
197
22
Highest AQI (US) recorded in
August54AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202534AQI (US)
22
9
28
31
30
31
30
31
31
29
1
26
5
17
13
20
11
326
39
Highest AQI (US) recorded in
November48AQI (US)
Lowest AQI (US) recorded in
August27AQI (US)
202434AQI (US)
16
1
2
12
29
31
31
27
1
28
3
24
6
19
12
218
24
Highest AQI (US) recorded in
April55AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
202344AQI (US)
3
30
1
33
1
Highest AQI (US) recorded in
November47AQI (US)
Lowest AQI (US) recorded in
December44AQI (US)
202137AQI (US)
2
9
2
17
2
28
4
Highest AQI (US) recorded in
August43AQI (US)
Lowest AQI (US) recorded in
July13AQI (US)
202078AQI (US)
1
1
Highest AQI (US) recorded in
October78AQI (US)
Lowest AQI (US) recorded in
October78AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
78AQI (US)Least Polluted Year Recorded
2026(Avg.)
31AQI (US)Eureka's annual 2026 AQI (US) (31) shows an average percentage change of -24.7% (improved AQI (US)) compared to previous years: 2020 (78), 2021 (37), 2023 (44), 2024 (34), 2025 (34).
