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HistoryAQIPM2.5PM10COSO2NO2O3

Duluth, Minnesota, 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

Duluth, Minnesota, United States

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
161AQI
Lowest AQI recorded on
28th Aug 2021
11AQI

Same Day Analysis (20th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 23 of Good air quality, showing improvement over 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 20th Aug - 21st Aug 2025

Duluth, Minnesota, United States

AQI
Day
Night
.

5 AM20th Aug 2025

8 PM

4 AM21st Aug 2025

Day time
Avg. Highest Time
6AM20th Aug

25AQI

Avg. Lowest Time
6PM20th Aug

16AQI

Night time
Avg. Highest Time
5AM20th Aug

26AQI

Avg. Lowest Time
10PM20th Aug

18AQI

In the last 24 hours,

Duluth's AQI reached its highest point of 26 at 5 AM during the Night, while the lowest point, 16, was recorded at 6 PM during the Day between 20th Aug and 21st Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Duluth, Minnesota, United States

JulAug
22nd - 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 - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Jul 2025615 AMAQI
22nd Jul 2025646 AMAQI
22nd Jul 2025617 AMAQI
22nd Jul 2025608 AMAQI
22nd Jul 2025589 AMAQI
22nd Jul 20255910 AMAQI
22nd Jul 20255711 AMAQI
22nd Jul 20255812 PMAQI
22nd Jul 2025581 PMAQI
22nd Jul 2025582 PMAQI
22nd Jul 2025593 PMAQI
22nd Jul 2025604 PMAQI
22nd Jul 2025595 PMAQI
22nd Jul 2025576 PMAQI
22nd Jul 2025577 PMAQI
22nd Jul 2025578 PMAQI
22nd Jul 2025559 PMAQI
22nd Jul 20255410 PMAQI
22nd Jul 20255511 PMAQI
23rd Jul 20255512 AMAQI
23rd Jul 2025551 AMAQI
23rd Jul 2025502 AMAQI
23rd Jul 2025503 AMAQI
23rd Jul 2025494 AMAQI

22°C15/30°C

23rd Jul 2025455 AMAQI
23rd Jul 2025446 AMAQI
23rd Jul 2025467 AMAQI
23rd Jul 2025458 AMAQI
23rd Jul 2025479 AMAQI
23rd Jul 20255010 AMAQI
23rd Jul 20254911 AMAQI
23rd Jul 20254712 PMAQI
23rd Jul 2025371 PMAQI
23rd Jul 2025362 PMAQI
23rd Jul 2025383 PMAQI
23rd Jul 2025404 PMAQI
23rd Jul 2025375 PMAQI
23rd Jul 2025366 PMAQI
23rd Jul 2025467 PMAQI
23rd Jul 2025468 PMAQI
23rd Jul 2025429 PMAQI
23rd Jul 20254410 PMAQI
23rd Jul 20254211 PMAQI
24th Jul 20254212 AMAQI
24th Jul 2025411 AMAQI
24th Jul 2025332 AMAQI
24th Jul 2025463 AMAQI
24th Jul 2025494 AMAQI

23°C20/26°C

24th Jul 2025515 AMAQI
24th Jul 2025506 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025478 AMAQI
24th Jul 2025339 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253111 AMAQI
24th Jul 20253212 PMAQI
24th Jul 2025331 PMAQI
24th Jul 2025342 PMAQI
24th Jul 2025383 PMAQI
24th Jul 2025364 PMAQI
24th Jul 2025395 PMAQI
24th Jul 2025426 PMAQI
24th Jul 2025367 PMAQI
24th Jul 2025338 PMAQI
24th Jul 2025319 PMAQI
24th Jul 20253410 PMAQI
24th Jul 20253511 PMAQI
25th Jul 20253712 AMAQI
25th Jul 2025391 AMAQI
25th Jul 2025442 AMAQI
25th Jul 2025413 AMAQI
25th Jul 2025454 AMAQI

23°C17/28°C

25th Jul 2025425 AMAQI
25th Jul 2025446 AMAQI
25th Jul 2025517 AMAQI
25th Jul 2025488 AMAQI
25th Jul 2025399 AMAQI
25th Jul 20254610 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20255812 PMAQI
25th Jul 2025561 PMAQI
25th Jul 2025642 PMAQI
25th Jul 2025623 PMAQI
25th Jul 2025634 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025576 PMAQI
25th Jul 2025517 PMAQI
25th Jul 2025498 PMAQI
25th Jul 2025569 PMAQI
25th Jul 20255610 PMAQI
25th Jul 20255511 PMAQI
26th Jul 20255612 AMAQI
26th Jul 2025571 AMAQI
26th Jul 2025632 AMAQI
26th Jul 2025663 AMAQI
26th Jul 2025664 AMAQI

21°C13/29°C

26th Jul 2025655 AMAQI
26th Jul 2025686 AMAQI
26th Jul 2025877 AMAQI
26th Jul 2025718 AMAQI
26th Jul 2025819 AMAQI
26th Jul 20257610 AMAQI
26th Jul 20257511 AMAQI
26th Jul 20256512 PMAQI
26th Jul 2025631 PMAQI
26th Jul 2025582 PMAQI
26th Jul 2025593 PMAQI
26th Jul 2025594 PMAQI
26th Jul 2025575 PMAQI
26th Jul 2025556 PMAQI
26th Jul 2025587 PMAQI
26th Jul 2025608 PMAQI
26th Jul 2025569 PMAQI
26th Jul 20255510 PMAQI
26th Jul 20255711 PMAQI
27th Jul 20255712 AMAQI
27th Jul 2025551 AMAQI
27th Jul 2025412 AMAQI
27th Jul 2025413 AMAQI
27th Jul 2025394 AMAQI

24°C16/32°C

27th Jul 2025405 AMAQI
27th Jul 2025396 AMAQI
27th Jul 2025417 AMAQI
27th Jul 2025408 AMAQI
27th Jul 2025409 AMAQI
27th Jul 20253910 AMAQI
27th Jul 20253511 AMAQI
27th Jul 20253712 PMAQI
27th Jul 2025401 PMAQI
27th Jul 2025422 PMAQI
27th Jul 2025413 PMAQI
27th Jul 2025424 PMAQI
27th Jul 2025425 PMAQI
27th Jul 2025426 PMAQI
27th Jul 2025417 PMAQI
27th Jul 2025428 PMAQI
27th Jul 2025419 PMAQI
27th Jul 20254010 PMAQI
27th Jul 20254211 PMAQI
28th Jul 20254212 AMAQI
28th Jul 2025421 AMAQI
28th Jul 2025392 AMAQI
28th Jul 2025373 AMAQI
28th Jul 2025344 AMAQI

26°C17/34°C

28th Jul 2025325 AMAQI
28th Jul 2025346 AMAQI
28th Jul 2025367 AMAQI
28th Jul 2025388 AMAQI
28th Jul 2025389 AMAQI
28th Jul 20253910 AMAQI
28th Jul 20254211 AMAQI
28th Jul 20254312 PMAQI
28th Jul 2025451 PMAQI
28th Jul 2025452 PMAQI
28th Jul 2025433 PMAQI
28th Jul 2025454 PMAQI
28th Jul 2025435 PMAQI
28th Jul 2025446 PMAQI
28th Jul 2025407 PMAQI
28th Jul 2025408 PMAQI
28th Jul 2025439 PMAQI
28th Jul 20254310 PMAQI
28th Jul 20254311 PMAQI
29th Jul 20254512 AMAQI
29th Jul 2025471 AMAQI
29th Jul 2025482 AMAQI
29th Jul 2025483 AMAQI
29th Jul 2025514 AMAQI

25°C18/32°C

29th Jul 2025505 AMAQI
29th Jul 2025486 AMAQI
29th Jul 2025467 AMAQI
29th Jul 2025498 AMAQI
29th Jul 2025549 AMAQI
29th Jul 20256210 AMAQI
29th Jul 20256111 AMAQI
29th Jul 20257012 PMAQI
29th Jul 2025661 PMAQI
29th Jul 2025602 PMAQI
29th Jul 2025563 PMAQI
29th Jul 2025564 PMAQI
29th Jul 2025575 PMAQI
29th Jul 2025576 PMAQI
29th Jul 2025557 PMAQI
29th Jul 2025548 PMAQI
29th Jul 2025549 PMAQI
29th Jul 20255810 PMAQI
29th Jul 20255811 PMAQI
30th Jul 20255512 AMAQI
30th Jul 2025581 AMAQI
30th Jul 2025792 AMAQI
30th Jul 2025843 AMAQI
30th Jul 2025804 AMAQI

23°C19/28°C

30th Jul 2025785 AMAQI
30th Jul 2025846 AMAQI
30th Jul 2025887 AMAQI
30th Jul 2025948 AMAQI
30th Jul 2025899 AMAQI
30th Jul 202510210 AMAQI
30th Jul 202510811 AMAQI
30th Jul 202512812 PMAQI
30th Jul 20251141 PMAQI
30th Jul 20251152 PMAQI
30th Jul 20251123 PMAQI
30th Jul 20251124 PMAQI
30th Jul 20251125 PMAQI
30th Jul 20251126 PMAQI
30th Jul 20251127 PMAQI
30th Jul 20251128 PMAQI
30th Jul 2025979 PMAQI
30th Jul 202510010 PMAQI
30th Jul 202511811 PMAQI
31st Jul 202511312 AMAQI
31st Jul 20251081 AMAQI
31st Jul 20251262 AMAQI
31st Jul 20251183 AMAQI
31st Jul 20251324 AMAQI

20°C16/26°C

31st Jul 20251305 AMAQI
31st Jul 20251506 AMAQI
31st Jul 20251627 AMAQI
31st Jul 20251648 AMAQI
31st Jul 20251629 AMAQI
31st Jul 202516410 AMAQI
31st Jul 202516611 AMAQI
31st Jul 202516812 PMAQI
31st Jul 20251651 PMAQI
31st Jul 20251642 PMAQI
31st Jul 20251663 PMAQI
31st Jul 20251694 PMAQI
31st Jul 20251615 PMAQI
31st Jul 20251656 PMAQI
31st Jul 20251657 PMAQI
31st Jul 20251648 PMAQI
31st Jul 20251629 PMAQI
31st Jul 202516410 PMAQI
31st Jul 202516311 PMAQI
1st Aug 202516212 AMAQI
1st Aug 20251631 AMAQI
1st Aug 20251632 AMAQI
1st Aug 20251643 AMAQI
1st Aug 20251624 AMAQI

18°C12/24°C

1st Aug 20251625 AMAQI
1st Aug 20251616 AMAQI
1st Aug 20251637 AMAQI
1st Aug 20251658 AMAQI
1st Aug 20251639 AMAQI
1st Aug 202516310 AMAQI
1st Aug 202516111 AMAQI
1st Aug 202516012 PMAQI
1st Aug 20251621 PMAQI
1st Aug 20251642 PMAQI
1st Aug 20251633 PMAQI
1st Aug 20251604 PMAQI
1st Aug 20251605 PMAQI
1st Aug 20251596 PMAQI
1st Aug 20251637 PMAQI
1st Aug 20251618 PMAQI
1st Aug 20251589 PMAQI
1st Aug 202516010 PMAQI
1st Aug 202515611 PMAQI
2nd Aug 202515812 AMAQI
2nd Aug 20251581 AMAQI
2nd Aug 20251582 AMAQI
2nd Aug 20251563 AMAQI
2nd Aug 20251574 AMAQI

20°C10/28°C

2nd Aug 20251565 AMAQI
2nd Aug 20251566 AMAQI
2nd Aug 20251567 AMAQI
2nd Aug 20251558 AMAQI
2nd Aug 20251539 AMAQI
2nd Aug 202515010 AMAQI
2nd Aug 202514711 AMAQI
2nd Aug 202515112 PMAQI
2nd Aug 20251471 PMAQI
2nd Aug 20251482 PMAQI
2nd Aug 20251493 PMAQI
2nd Aug 20251454 PMAQI
2nd Aug 20251385 PMAQI
2nd Aug 20251306 PMAQI
2nd Aug 20251477 PMAQI
2nd Aug 20251338 PMAQI
2nd Aug 20251149 PMAQI
2nd Aug 202511310 PMAQI
2nd Aug 202511011 PMAQI
3rd Aug 202511012 AMAQI
3rd Aug 20251101 AMAQI
3rd Aug 20251102 AMAQI
3rd Aug 20251083 AMAQI
3rd Aug 20251114 AMAQI

20°C10/28°C

3rd Aug 2025995 AMAQI
3rd Aug 20251006 AMAQI
3rd Aug 20251017 AMAQI
3rd Aug 2025978 AMAQI
3rd Aug 20251009 AMAQI
3rd Aug 20259610 AMAQI
3rd Aug 20259311 AMAQI
3rd Aug 20259612 PMAQI
3rd Aug 2025961 PMAQI
3rd Aug 2025952 PMAQI
3rd Aug 2025953 PMAQI
3rd Aug 2025934 PMAQI
3rd Aug 2025945 PMAQI
3rd Aug 2025906 PMAQI
3rd Aug 2025967 PMAQI
3rd Aug 2025968 PMAQI
3rd Aug 2025879 PMAQI
3rd Aug 20258810 PMAQI
3rd Aug 20258811 PMAQI
4th Aug 20258612 AMAQI
4th Aug 2025931 AMAQI
4th Aug 2025882 AMAQI
4th Aug 2025883 AMAQI
4th Aug 2025924 AMAQI

20°C11/26°C

4th Aug 2025905 AMAQI
4th Aug 2025866 AMAQI
4th Aug 2025867 AMAQI
4th Aug 2025858 AMAQI
4th Aug 2025869 AMAQI
4th Aug 20258510 AMAQI
4th Aug 20258511 AMAQI
4th Aug 20258512 PMAQI
4th Aug 2025861 PMAQI
4th Aug 2025852 PMAQI
4th Aug 2025873 PMAQI
4th Aug 2025884 PMAQI
4th Aug 2025915 PMAQI
4th Aug 2025916 PMAQI
4th Aug 2025867 PMAQI
4th Aug 2025808 PMAQI
4th Aug 2025839 PMAQI
4th Aug 20259010 PMAQI
4th Aug 20258711 PMAQI
5th Aug 20258512 AMAQI
5th Aug 2025821 AMAQI
5th Aug 2025872 AMAQI
5th Aug 2025863 AMAQI
5th Aug 2025854 AMAQI

19°C14/25°C

5th Aug 2025885 AMAQI
5th Aug 2025866 AMAQI
5th Aug 2025857 AMAQI
5th Aug 2025888 AMAQI
5th Aug 2025889 AMAQI
5th Aug 20258510 AMAQI
5th Aug 20258611 AMAQI
5th Aug 20258612 PMAQI
5th Aug 2025841 PMAQI
5th Aug 2025822 PMAQI
5th Aug 2025833 PMAQI
5th Aug 2025804 PMAQI
5th Aug 2025765 PMAQI
5th Aug 2025746 PMAQI
5th Aug 2025887 PMAQI
5th Aug 2025818 PMAQI
5th Aug 2025739 PMAQI
5th Aug 20257110 PMAQI
5th Aug 20256711 PMAQI
6th Aug 20256812 AMAQI
6th Aug 2025711 AMAQI
6th Aug 2025732 AMAQI
6th Aug 2025683 AMAQI
6th Aug 2025624 AMAQI

19°C16/24°C

6th Aug 2025665 AMAQI
6th Aug 2025626 AMAQI
6th Aug 2025647 AMAQI
6th Aug 2025638 AMAQI
6th Aug 2025649 AMAQI
6th Aug 20256610 AMAQI
6th Aug 20257011 AMAQI
6th Aug 20256912 PMAQI
6th Aug 2025701 PMAQI
6th Aug 2025692 PMAQI
6th Aug 2025683 PMAQI
6th Aug 2025664 PMAQI
6th Aug 2025605 PMAQI
6th Aug 2025576 PMAQI
6th Aug 2025637 PMAQI
6th Aug 2025628 PMAQI
6th Aug 2025609 PMAQI
6th Aug 20255910 PMAQI
6th Aug 20255911 PMAQI
7th Aug 20256212 AMAQI
7th Aug 2025641 AMAQI
7th Aug 2025632 AMAQI
7th Aug 2025643 AMAQI
7th Aug 2025694 AMAQI

19°C16/23°C

7th Aug 2025625 AMAQI
7th Aug 2025636 AMAQI
7th Aug 2025657 AMAQI
7th Aug 2025628 AMAQI
7th Aug 2025609 AMAQI
7th Aug 20255810 AMAQI
7th Aug 20255811 AMAQI
7th Aug 20255712 PMAQI
7th Aug 2025551 PMAQI
7th Aug 2025552 PMAQI
7th Aug 2025573 PMAQI
7th Aug 2025564 PMAQI
7th Aug 2025565 PMAQI
7th Aug 2025576 PMAQI
7th Aug 2025597 PMAQI
7th Aug 2025628 PMAQI
7th Aug 2025599 PMAQI
7th Aug 20255810 PMAQI
7th Aug 20255811 PMAQI
8th Aug 20255912 AMAQI
8th Aug 2025581 AMAQI
8th Aug 2025542 AMAQI
8th Aug 2025563 AMAQI
8th Aug 2025554 AMAQI

24°C19/32°C

8th Aug 2025545 AMAQI
8th Aug 2025556 AMAQI
8th Aug 2025567 AMAQI
8th Aug 2025558 AMAQI
8th Aug 2025549 AMAQI
8th Aug 20255610 AMAQI
8th Aug 20255511 AMAQI
8th Aug 20255612 PMAQI
8th Aug 2025561 PMAQI
8th Aug 2025552 PMAQI
8th Aug 2025563 PMAQI
8th Aug 2025564 PMAQI
8th Aug 2025565 PMAQI
8th Aug 2025586 PMAQI
8th Aug 2025567 PMAQI
8th Aug 2025568 PMAQI
8th Aug 2025579 PMAQI
8th Aug 20255610 PMAQI
8th Aug 20255611 PMAQI
9th Aug 20255712 AMAQI
9th Aug 2025581 AMAQI
9th Aug 2025592 AMAQI
9th Aug 2025583 AMAQI
9th Aug 2025594 AMAQI

24°C19/29°C

9th Aug 2025595 AMAQI
9th Aug 2025596 AMAQI
9th Aug 2025597 AMAQI
9th Aug 2025578 AMAQI
9th Aug 2025529 AMAQI
9th Aug 20255010 AMAQI
9th Aug 20254911 AMAQI
9th Aug 20254712 PMAQI
9th Aug 2025451 PMAQI
9th Aug 2025462 PMAQI
9th Aug 2025493 PMAQI
9th Aug 2025494 PMAQI
9th Aug 2025485 PMAQI
9th Aug 2025486 PMAQI
9th Aug 2025527 PMAQI
9th Aug 2025528 PMAQI
9th Aug 2025469 PMAQI
9th Aug 20254510 PMAQI
9th Aug 20254511 PMAQI
10th Aug 20254512 AMAQI
10th Aug 2025421 AMAQI
10th Aug 2025322 AMAQI
10th Aug 2025353 AMAQI
10th Aug 2025364 AMAQI

26°C23/29°C

10th Aug 2025355 AMAQI
10th Aug 2025356 AMAQI
10th Aug 2025367 AMAQI
10th Aug 2025368 AMAQI
10th Aug 2025359 AMAQI
10th Aug 20253610 AMAQI
10th Aug 20253611 AMAQI
10th Aug 20253812 PMAQI
10th Aug 2025401 PMAQI
10th Aug 2025432 PMAQI
10th Aug 2025433 PMAQI
10th Aug 2025454 PMAQI
10th Aug 2025435 PMAQI
10th Aug 2025376 PMAQI
10th Aug 2025367 PMAQI
10th Aug 2025398 PMAQI
10th Aug 2025479 PMAQI
10th Aug 20255010 PMAQI
10th Aug 20255011 PMAQI
11th Aug 20255212 AMAQI
11th Aug 2025561 AMAQI
11th Aug 2025572 AMAQI
11th Aug 2025563 AMAQI
11th Aug 2025584 AMAQI

24°C17/31°C

11th Aug 2025565 AMAQI
11th Aug 2025546 AMAQI
11th Aug 2025537 AMAQI
11th Aug 2025528 AMAQI
11th Aug 2025559 AMAQI
11th Aug 20255610 AMAQI
11th Aug 20255611 AMAQI
11th Aug 20255712 PMAQI
11th Aug 2025601 PMAQI
11th Aug 2025682 PMAQI
11th Aug 2025783 PMAQI
11th Aug 20251004 PMAQI
11th Aug 20251205 PMAQI
11th Aug 20251336 PMAQI
11th Aug 2025627 PMAQI
11th Aug 2025888 PMAQI
11th Aug 20251069 PMAQI
11th Aug 202511110 PMAQI
11th Aug 202513311 PMAQI
12th Aug 202512712 AMAQI
12th Aug 20251191 AMAQI
12th Aug 20251132 AMAQI
12th Aug 20251043 AMAQI
12th Aug 2025934 AMAQI

24°C17/31°C

12th Aug 2025695 AMAQI
12th Aug 2025626 AMAQI
12th Aug 2025597 AMAQI
12th Aug 2025578 AMAQI
12th Aug 2025569 AMAQI
12th Aug 20255210 AMAQI
12th Aug 20254811 AMAQI
12th Aug 20254912 PMAQI
12th Aug 2025521 PMAQI
12th Aug 2025502 PMAQI
12th Aug 2025483 PMAQI
12th Aug 2025494 PMAQI
12th Aug 2025495 PMAQI
12th Aug 2025596 PMAQI
12th Aug 2025627 PMAQI
12th Aug 2025618 PMAQI
12th Aug 2025569 PMAQI
12th Aug 20255610 PMAQI
12th Aug 20255611 PMAQI
13th Aug 20255812 AMAQI
13th Aug 2025571 AMAQI
13th Aug 2025582 AMAQI
13th Aug 2025603 AMAQI
13th Aug 2025664 AMAQI

22°C17/26°C

13th Aug 2025635 AMAQI
13th Aug 2025636 AMAQI
13th Aug 2025657 AMAQI
13th Aug 2025648 AMAQI
13th Aug 2025709 AMAQI
13th Aug 20256910 AMAQI
13th Aug 20257311 AMAQI
13th Aug 20257712 PMAQI
13th Aug 2025761 PMAQI
13th Aug 2025782 PMAQI
13th Aug 2025733 PMAQI
13th Aug 2025744 PMAQI
13th Aug 2025735 PMAQI
13th Aug 2025776 PMAQI
13th Aug 2025627 PMAQI
13th Aug 2025658 PMAQI
13th Aug 2025679 PMAQI
13th Aug 20256810 PMAQI
13th Aug 20256711 PMAQI
14th Aug 20256812 AMAQI
14th Aug 2025691 AMAQI
14th Aug 2025692 AMAQI
14th Aug 2025703 AMAQI
14th Aug 2025674 AMAQI

19°C13/23°C

14th Aug 2025665 AMAQI
14th Aug 2025736 AMAQI
14th Aug 2025747 AMAQI
14th Aug 2025748 AMAQI
14th Aug 2025719 AMAQI
14th Aug 20256910 AMAQI
14th Aug 20256911 AMAQI
14th Aug 20257112 PMAQI
14th Aug 2025701 PMAQI
14th Aug 2025752 PMAQI
14th Aug 2025683 PMAQI
14th Aug 2025744 PMAQI
14th Aug 2025745 PMAQI
14th Aug 2025726 PMAQI
14th Aug 2025667 PMAQI
14th Aug 2025668 PMAQI
14th Aug 2025629 PMAQI
14th Aug 20256110 PMAQI
14th Aug 20256011 PMAQI
15th Aug 20256012 AMAQI
15th Aug 2025591 AMAQI
15th Aug 2025592 AMAQI
15th Aug 2025593 AMAQI
15th Aug 2025584 AMAQI

20°C15/26°C

15th Aug 2025565 AMAQI
15th Aug 2025596 AMAQI
15th Aug 2025597 AMAQI
15th Aug 2025608 AMAQI
15th Aug 2025599 AMAQI
15th Aug 20256010 AMAQI
15th Aug 20256011 AMAQI
15th Aug 20256112 PMAQI
15th Aug 2025621 PMAQI
15th Aug 2025612 PMAQI
15th Aug 2025623 PMAQI
15th Aug 2025614 PMAQI
15th Aug 2025625 PMAQI
15th Aug 2025626 PMAQI
15th Aug 2025597 PMAQI
15th Aug 2025578 PMAQI
15th Aug 2025569 PMAQI
15th Aug 20255310 PMAQI
15th Aug 20255611 PMAQI
16th Aug 20255412 AMAQI
16th Aug 2025541 AMAQI
16th Aug 2025532 AMAQI
16th Aug 2025493 AMAQI
16th Aug 2025424 AMAQI

24°C19/28°C

16th Aug 2025405 AMAQI
16th Aug 2025386 AMAQI
16th Aug 2025347 AMAQI
16th Aug 2025328 AMAQI
16th Aug 2025319 AMAQI
16th Aug 20253010 AMAQI
16th Aug 20253111 AMAQI
16th Aug 20252912 PMAQI
16th Aug 2025271 PMAQI
16th Aug 2025252 PMAQI
16th Aug 2025263 PMAQI
16th Aug 2025274 PMAQI
16th Aug 2025265 PMAQI
16th Aug 2025276 PMAQI
16th Aug 2025327 PMAQI
16th Aug 2025298 PMAQI
16th Aug 2025269 PMAQI
16th Aug 20252510 PMAQI
16th Aug 20252711 PMAQI
17th Aug 20252712 AMAQI
17th Aug 2025271 AMAQI
17th Aug 2025252 AMAQI
17th Aug 2025263 AMAQI
17th Aug 2025244 AMAQI

18°C15/19°C

17th Aug 2025205 AMAQI
17th Aug 2025196 AMAQI
17th Aug 2025217 AMAQI
17th Aug 2025168 AMAQI
17th Aug 2025169 AMAQI
17th Aug 20251510 AMAQI
17th Aug 20251511 AMAQI
17th Aug 20251512 PMAQI
17th Aug 2025151 PMAQI
17th Aug 2025152 PMAQI
17th Aug 2025143 PMAQI
17th Aug 2025154 PMAQI
17th Aug 2025145 PMAQI
17th Aug 2025136 PMAQI
17th Aug 2025187 PMAQI
17th Aug 2025188 PMAQI
17th Aug 2025169 PMAQI
17th Aug 20251710 PMAQI
17th Aug 20251611 PMAQI
18th Aug 20251512 AMAQI
18th Aug 2025141 AMAQI
18th Aug 2025142 AMAQI
18th Aug 2025133 AMAQI
18th Aug 2025144 AMAQI

17°C15/19°C

18th Aug 2025145 AMAQI
18th Aug 2025166 AMAQI
18th Aug 2025197 AMAQI
18th Aug 2025188 AMAQI
18th Aug 2025209 AMAQI
18th Aug 20252110 AMAQI
18th Aug 20251911 AMAQI
18th Aug 20251812 PMAQI
18th Aug 2025171 PMAQI
18th Aug 2025182 PMAQI
18th Aug 2025183 PMAQI
18th Aug 2025184 PMAQI
18th Aug 2025185 PMAQI
18th Aug 2025196 PMAQI
18th Aug 2025177 PMAQI
18th Aug 2025218 PMAQI
18th Aug 2025249 PMAQI
18th Aug 20252610 PMAQI
18th Aug 20252711 PMAQI
19th Aug 20252912 AMAQI
19th Aug 2025301 AMAQI
19th Aug 2025292 AMAQI
19th Aug 2025273 AMAQI
19th Aug 2025274 AMAQI

17°C15/19°C

19th Aug 2025285 AMAQI
19th Aug 2025296 AMAQI
19th Aug 2025297 AMAQI
19th Aug 2025288 AMAQI
19th Aug 2025289 AMAQI
19th Aug 20252910 AMAQI
19th Aug 20253111 AMAQI
19th Aug 20253512 PMAQI
19th Aug 2025411 PMAQI
19th Aug 2025402 PMAQI
19th Aug 2025433 PMAQI
19th Aug 2025454 PMAQI
19th Aug 2025475 PMAQI
19th Aug 2025406 PMAQI
19th Aug 2025287 PMAQI
19th Aug 2025308 PMAQI
19th Aug 2025339 PMAQI
19th Aug 20253110 PMAQI
19th Aug 20252911 PMAQI
20th Aug 20252912 AMAQI
20th Aug 2025291 AMAQI
20th Aug 2025282 AMAQI
20th Aug 2025263 AMAQI
20th Aug 2025274 AMAQI

21°C16/28°C

20th Aug 2025265 AMAQI
20th Aug 2025256 AMAQI
20th Aug 2025247 AMAQI
20th Aug 2025238 AMAQI
20th Aug 2025259 AMAQI
20th Aug 20252410 AMAQI
20th Aug 20252011 AMAQI
20th Aug 20251812 PMAQI
20th Aug 2025171 PMAQI
20th Aug 2025162 PMAQI
20th Aug 2025163 PMAQI
20th Aug 2025174 PMAQI
20th Aug 2025185 PMAQI
20th Aug 2025166 PMAQI
20th Aug 2025237 PMAQI
20th Aug 2025208 PMAQI
20th Aug 2025189 PMAQI
20th Aug 20251810 PMAQI
20th Aug 20252011 PMAQI
21st Aug 20252312 AMAQI
21st Aug 2025221 AMAQI
21st Aug 2025232 AMAQI
21st Aug 2025223 AMAQI
21st Aug 2025224 AMAQI

20°C15/24°C

21st Aug 2025225 AMAQI
5 AM
21st Aug 2025236 AMAQI
21st Aug 2025237 AMAQI
21st Aug 2025238 AMAQI
12 PM
8 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
12 PM - 8 PM

66AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
5 AM - 11 AM

64AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 8 PM (Avg. 66), while the lowest AQI was between 5 AM to 11 AM (Avg. 64).
Night time
Avg. Highest Time
11 PM

65AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM - 10 PM

64AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 PM to 11 PM (Avg. 65), while the lowest AQI was between 12 AM to 10 PM (Avg. 64).

2025 Days Vs Air Quality

Duluth, Minnesota, United States

2025

84%

194

14%

33

2%

4

0.4%

1

Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)

Good
194 Days
Moderate
33 Days
Poor
4 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2025, 84% of 233 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

Duluth, Minnesota, United States

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
21AQI
2nd January 2025
23AQI
3rd January 2025
19AQI
4th January 2025
21AQI
5th January 2025
21AQI
6th January 2025
24AQI
7th January 2025
25AQI
8th January 2025
23AQI
9th January 2025
44AQI
10th January 2025
29AQI
11th January 2025
22AQI
12th January 2025
23AQI
13th January 2025
26AQI
14th January 2025
23AQI
15th January 2025
27AQI
16th January 2025
25AQI
17th January 2025
23AQI
18th January 2025
24AQI
19th January 2025
25AQI
20th January 2025
24AQI
21st January 2025
24AQI
22nd January 2025
24AQI
23rd January 2025
25AQI
24th January 2025
28AQI
25th January 2025
28AQI
26th January 2025
26AQI
27th January 2025
26AQI
28th January 2025
26AQI
29th January 2025
27AQI
30th January 2025
31AQI
31st January 2025
26AQI
1st February 2025
26AQI
2nd February 2025
30AQI
3rd February 2025
26AQI
4th February 2025
24AQI
5th February 2025
26AQI
6th February 2025
26AQI
7th February 2025
27AQI
8th February 2025
26AQI
9th February 2025
28AQI
10th February 2025
30AQI
11th February 2025
25AQI
12th February 2025
30AQI
13th February 2025
25AQI
14th February 2025
47AQI
15th February 2025
39AQI
16th February 2025
24AQI
17th February 2025
23AQI
18th February 2025
22AQI
19th February 2025
22AQI
20th February 2025
25AQI
21st February 2025
28AQI
22nd February 2025
40AQI
23rd February 2025
61AQI
24th February 2025
30AQI
25th February 2025
25AQI
26th February 2025
26AQI
27th February 2025
27AQI
28th February 2025
27AQI
1st March 2025
28AQI
2nd March 2025
27AQI
3rd March 2025
34AQI
4th March 2025
38AQI
5th March 2025
28AQI
6th March 2025
27AQI
7th March 2025
29AQI
8th March 2025
28AQI
9th March 2025
29AQI
10th March 2025
27AQI
11th March 2025
28AQI
12th March 2025
27AQI
13th March 2025
26AQI
14th March 2025
34AQI
15th March 2025
37AQI
16th March 2025
15AQI
17th March 2025
17AQI
18th March 2025
17AQI
19th March 2025
18AQI
20th March 2025
19AQI
21st March 2025
20AQI
22nd March 2025
29AQI
23rd March 2025
23AQI
24th March 2025
17AQI
25th March 2025
21AQI
26th March 2025
23AQI
27th March 2025
18AQI
28th March 2025
17AQI
29th March 2025
16AQI
30th March 2025
16AQI
31st March 2025
19AQI
1st April 2025
17AQI
2nd April 2025
17AQI
3rd April 2025
16AQI
4th April 2025
24AQI
5th April 2025
19AQI
6th April 2025
22AQI
7th April 2025
15AQI
8th April 2025
19AQI
9th April 2025
23AQI
10th April 2025
37AQI
11th April 2025
40AQI
12th April 2025
48AQI
13th April 2025
51AQI
14th April 2025
25AQI
15th April 2025
16AQI
16th April 2025
17AQI
17th April 2025
23AQI
18th April 2025
36AQI
19th April 2025
18AQI
20th April 2025
19AQI
21st April 2025
15AQI
22nd April 2025
22AQI
23rd April 2025
17AQI
24th April 2025
17AQI
25th April 2025
19AQI
26th April 2025
21AQI
27th April 2025
21AQI
28th April 2025
30AQI
29th April 2025
15AQI
30th April 2025
17AQI
1st May 2025
21AQI
2nd May 2025
18AQI
3rd May 2025
20AQI
4th May 2025
22AQI
5th May 2025
20AQI
6th May 2025
26AQI
7th May 2025
18AQI
8th May 2025
15AQI
9th May 2025
28AQI
10th May 2025
20AQI
11th May 2025
25AQI
12th May 2025
32AQI
13th May 2025
42AQI
14th May 2025
45AQI
15th May 2025
29AQI
16th May 2025
24AQI
17th May 2025
16AQI
18th May 2025
15AQI
19th May 2025
14AQI
20th May 2025
15AQI
21st May 2025
16AQI
22nd May 2025
16AQI
23rd May 2025
14AQI
24th May 2025
18AQI
25th May 2025
21AQI
26th May 2025
19AQI
27th May 2025
23AQI
28th May 2025
25AQI
29th May 2025
34AQI
30th May 2025
38AQI
31st May 2025
43AQI
1st June 2025
42AQI
2nd June 2025
49AQI
3rd June 2025
75AQI
4th June 2025
63AQI
5th June 2025
58AQI
6th June 2025
55AQI
7th June 2025
65AQI
8th June 2025
60AQI
9th June 2025
51AQI
10th June 2025
64AQI
11th June 2025
79AQI
12th June 2025
54AQI
13th June 2025
31AQI
14th June 2025
26AQI
15th June 2025
32AQI
16th June 2025
39AQI
17th June 2025
34AQI
18th June 2025
37AQI
19th June 2025
41AQI
20th June 2025
32AQI
21st June 2025
35AQI
22nd June 2025
35AQI
23rd June 2025
39AQI
24th June 2025
41AQI
25th June 2025
41AQI
26th June 2025
32AQI
27th June 2025
23AQI
28th June 2025
28AQI
29th June 2025
25AQI
30th June 2025
21AQI
1st July 2025
36AQI
2nd July 2025
27AQI
3rd July 2025
41AQI
4th July 2025
44AQI
5th July 2025
31AQI
6th July 2025
51AQI
7th July 2025
34AQI
8th July 2025
34AQI
9th July 2025
34AQI
10th July 2025
33AQI
11th July 2025
36AQI
12th July 2025
94AQI
13th July 2025
116AQI
14th July 2025
106AQI
15th July 2025
84AQI
16th July 2025
49AQI
17th July 2025
36AQI
18th July 2025
43AQI
19th July 2025
32AQI
20th July 2025
53AQI
21st July 2025
58AQI
22nd July 2025
58AQI
23rd July 2025
45AQI
24th July 2025
38AQI
25th July 2025
50AQI
26th July 2025
63AQI
27th July 2025
42AQI
28th July 2025
40AQI
29th July 2025
54AQI
30th July 2025
96AQI
31st July 2025
150AQI
1st August 2025
161AQI
2nd August 2025
144AQI
3rd August 2025
98AQI
4th August 2025
87AQI
5th August 2025
82AQI
6th August 2025
65AQI
7th August 2025
60AQI
8th August 2025
56AQI
9th August 2025
52AQI
10th August 2025
39AQI
11th August 2025
75AQI
12th August 2025
70AQI
13th August 2025
67AQI
14th August 2025
68AQI
15th August 2025
59AQI
16th August 2025
35AQI
17th August 2025
19AQI
18th August 2025
18AQI
19th August 2025
32AQI
20th August 2025
23AQI
21st August 2025
22nd August 2025
23rd August 2025
24th August 2025
25th August 2025
26th August 2025
27th August 2025
28th August 2025
29th August 2025
30th August 2025
31st August 2025
1st September 2025
2nd September 2025
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

25AQI

29AQI

24AQI

23AQI

24AQI

44AQI

55AQI

66AQI

No. of days

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

202535AQI

31
27
1
31
29
1
31
20
10
19
9
3
6
12
1
1
194
33
4
1

Highest AQI recorded in

August

66AQI

Lowest AQI recorded in

April

23AQI

202428AQI

27
4
28
1
30
1
30
29
2
29
23
8
25
6
29
1
31
30
30
1
341
24

Highest AQI recorded in

July

39AQI

Lowest AQI recorded in

November

21AQI

202335AQI

25
6
28
31
30
29
2
10
17
3
20
9
2
21
10
20
10
30
1
28
1
29
2
301
58
5

Highest AQI recorded in

June

64AQI

Lowest AQI recorded in

October

21AQI

202224AQI

31
22
31
30
31
30
22
2
29
31
27
3
29
2
315
5

Highest AQI recorded in

December

30AQI

Lowest AQI recorded in

August

14AQI

202126AQI

25
5
24
4
31
30
31
30
24
6
1
27
3
1
30
31
30
31
344
18
2

Highest AQI recorded in

July

42AQI

Lowest AQI recorded in

October

15AQI

202026AQI

13
21
18
30
29
2
31
28
2
31
29
1
31
261
5

Highest AQI recorded in

June

29AQI

Lowest AQI recorded in

September

22AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
35AQI
Least Polluted Year Recorded
2022(Avg.)
24AQI

Duluth's annual 2025 AQI (35) shows an average percentage change of 27.9% (worsened AQI) compared to previous years: 2020 (26), 2021 (26), 2022 (24), 2023 (35), 2024 (28).