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HistoryAQIPM2.5PM10COSO2NO2O3

Hkust, Xiangtan, Hunan, China Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

October Air Quality Analysis

Hkust, Xiangtan, Hunan, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
28th Oct 2024
194AQI
Lowest AQI recorded on
6th Oct 2022
28AQI

Same Day Analysis (5th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 124 of Poor air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 5th Oct - 6th Oct 2025

Hkust, Xiangtan, Hunan, China

AQI
Day
Night
.

6 AM5th Oct 2025

6 PM

5 AM6th Oct 2025

Day time
Avg. Highest Time
2PM5th Oct

153AQI

Avg. Lowest Time
6PM5th Oct

100AQI

Night time
Avg. Highest Time
2AM6th Oct

146AQI

Avg. Lowest Time
8PM5th Oct

88AQI

In the last 24 hours,

Hkust's AQI reached its highest point of 153 at 2 PM during the Day, while the lowest point, 88, was recorded at 8 PM during the Night between 5th Oct and 6th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Hkust, Xiangtan, Hunan, China

SepOct
06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th
Day
Night
6th Sep 2025636 AMAQI
6th Sep 2025647 AMAQI
6th Sep 2025698 AMAQI
6th Sep 2025749 AMAQI
6th Sep 20258210 AMAQI
6th Sep 20257611 AMAQI
6th Sep 20258012 PMAQI
6th Sep 2025741 PMAQI
6th Sep 2025742 PMAQI
6th Sep 2025663 PMAQI
6th Sep 2025704 PMAQI
6th Sep 2025665 PMAQI
6th Sep 2025716 PMAQI
6th Sep 2025737 PMAQI
6th Sep 2025738 PMAQI
6th Sep 2025709 PMAQI
6th Sep 20257110 PMAQI
6th Sep 20257211 PMAQI
7th Sep 20257012 AMAQI
7th Sep 2025651 AMAQI
7th Sep 2025642 AMAQI
7th Sep 2025663 AMAQI
7th Sep 2025664 AMAQI
7th Sep 2025675 AMAQI

28°C25/32°C

7th Sep 2025686 AMAQI
7th Sep 2025687 AMAQI
7th Sep 2025728 AMAQI
7th Sep 2025729 AMAQI
7th Sep 20257210 AMAQI
7th Sep 20257111 AMAQI
7th Sep 20258312 PMAQI
7th Sep 2025791 PMAQI
7th Sep 2025802 PMAQI
7th Sep 2025783 PMAQI
7th Sep 2025774 PMAQI
7th Sep 2025815 PMAQI
7th Sep 2025736 PMAQI
7th Sep 2025677 PMAQI
7th Sep 2025708 PMAQI
7th Sep 2025729 PMAQI
7th Sep 20257010 PMAQI
7th Sep 20256811 PMAQI
8th Sep 20256812 AMAQI
8th Sep 2025651 AMAQI
8th Sep 2025662 AMAQI
8th Sep 2025663 AMAQI
8th Sep 2025684 AMAQI
8th Sep 2025675 AMAQI

28°C23/34°C

8th Sep 2025686 AMAQI
8th Sep 2025677 AMAQI
8th Sep 2025728 AMAQI
8th Sep 2025749 AMAQI
8th Sep 20257310 AMAQI
8th Sep 20257211 AMAQI
8th Sep 20257312 PMAQI
8th Sep 2025661 PMAQI
8th Sep 2025602 PMAQI
8th Sep 2025613 PMAQI
8th Sep 2025584 PMAQI
8th Sep 2025545 PMAQI
8th Sep 2025556 PMAQI
8th Sep 2025617 PMAQI
8th Sep 2025638 PMAQI
8th Sep 2025619 PMAQI
8th Sep 20256010 PMAQI
8th Sep 20256211 PMAQI
9th Sep 20256012 AMAQI
9th Sep 2025651 AMAQI
9th Sep 2025662 AMAQI
9th Sep 2025663 AMAQI
9th Sep 2025664 AMAQI
9th Sep 2025665 AMAQI

29°C25/35°C

9th Sep 2025666 AMAQI
9th Sep 2025667 AMAQI
9th Sep 2025558 AMAQI
9th Sep 2025489 AMAQI
9th Sep 20255210 AMAQI
9th Sep 20254611 AMAQI
9th Sep 20254912 PMAQI
9th Sep 2025461 PMAQI
9th Sep 2025522 PMAQI
9th Sep 2025503 PMAQI
9th Sep 2025554 PMAQI
9th Sep 2025555 PMAQI
9th Sep 2025536 PMAQI
9th Sep 2025597 PMAQI
9th Sep 2025598 PMAQI
9th Sep 2025619 PMAQI
9th Sep 20256310 PMAQI
9th Sep 20255611 PMAQI
10th Sep 20256212 AMAQI
10th Sep 2025691 AMAQI
10th Sep 2025652 AMAQI
10th Sep 2025613 AMAQI
10th Sep 2025604 AMAQI
10th Sep 2025605 AMAQI

25°C23/28°C

10th Sep 2025606 AMAQI
10th Sep 2025607 AMAQI
10th Sep 2025478 AMAQI
10th Sep 2025509 AMAQI
10th Sep 20255810 AMAQI
10th Sep 20254811 AMAQI
10th Sep 20255812 PMAQI
10th Sep 2025531 PMAQI
10th Sep 2025532 PMAQI
10th Sep 2025513 PMAQI
10th Sep 2025524 PMAQI
10th Sep 2025545 PMAQI
10th Sep 2025516 PMAQI
10th Sep 2025567 PMAQI
10th Sep 2025578 PMAQI
10th Sep 2025589 PMAQI
10th Sep 20256010 PMAQI
10th Sep 20255911 PMAQI
11th Sep 20256012 AMAQI
11th Sep 2025611 AMAQI
11th Sep 2025602 AMAQI
11th Sep 2025603 AMAQI
11th Sep 2025584 AMAQI
11th Sep 2025605 AMAQI

26°C23/33°C

11th Sep 2025596 AMAQI
11th Sep 2025597 AMAQI
11th Sep 2025628 AMAQI
11th Sep 2025559 AMAQI
11th Sep 20255710 AMAQI
11th Sep 20255611 AMAQI
11th Sep 20255712 PMAQI
11th Sep 2025541 PMAQI
11th Sep 2025542 PMAQI
11th Sep 2025463 PMAQI
11th Sep 2025544 PMAQI
11th Sep 2025505 PMAQI
11th Sep 2025516 PMAQI
11th Sep 2025587 PMAQI
11th Sep 2025588 PMAQI
11th Sep 2025599 PMAQI
11th Sep 20255610 PMAQI
11th Sep 20255711 PMAQI
12th Sep 20255712 AMAQI
12th Sep 2025601 AMAQI
12th Sep 2025592 AMAQI
12th Sep 2025583 AMAQI
12th Sep 2025584 AMAQI
12th Sep 2025595 AMAQI

28°C24/34°C

12th Sep 2025576 AMAQI
12th Sep 2025587 AMAQI
12th Sep 2025568 AMAQI
12th Sep 2025559 AMAQI
12th Sep 20255210 AMAQI
12th Sep 20254711 AMAQI
12th Sep 20254812 PMAQI
12th Sep 2025461 PMAQI
12th Sep 2025502 PMAQI
12th Sep 2025443 PMAQI
12th Sep 2025514 PMAQI
12th Sep 2025495 PMAQI
12th Sep 2025546 PMAQI
12th Sep 2025567 PMAQI
12th Sep 2025588 PMAQI
12th Sep 2025609 PMAQI
12th Sep 20255710 PMAQI
12th Sep 20255611 PMAQI
13th Sep 20255812 AMAQI
13th Sep 2025581 AMAQI
13th Sep 2025592 AMAQI
13th Sep 2025583 AMAQI
13th Sep 2025564 AMAQI
13th Sep 2025575 AMAQI

30°C25/36°C

13th Sep 2025566 AMAQI
13th Sep 2025577 AMAQI
13th Sep 2025588 AMAQI
13th Sep 2025589 AMAQI
13th Sep 20255910 AMAQI
13th Sep 20256211 AMAQI
13th Sep 20256612 PMAQI
13th Sep 2025621 PMAQI
13th Sep 2025602 PMAQI
13th Sep 2025593 PMAQI
13th Sep 2025544 PMAQI
13th Sep 2025565 PMAQI
13th Sep 2025566 PMAQI
13th Sep 2025597 PMAQI
13th Sep 2025638 PMAQI
13th Sep 2025649 PMAQI
13th Sep 20256610 PMAQI
13th Sep 20256211 PMAQI
14th Sep 20256012 AMAQI
14th Sep 2025571 AMAQI
14th Sep 2025582 AMAQI
14th Sep 2025583 AMAQI
14th Sep 2025584 AMAQI
14th Sep 2025585 AMAQI

27°C22/33°C

14th Sep 2025596 AMAQI
14th Sep 2025587 AMAQI
14th Sep 2025728 AMAQI
14th Sep 2025769 AMAQI
14th Sep 20257810 AMAQI
14th Sep 20256711 AMAQI
14th Sep 20256712 PMAQI
14th Sep 2025631 PMAQI
14th Sep 2025672 PMAQI
14th Sep 2025603 PMAQI
14th Sep 2025594 PMAQI
14th Sep 2025575 PMAQI
14th Sep 2025586 PMAQI
14th Sep 2025607 PMAQI
14th Sep 2025598 PMAQI
14th Sep 2025619 PMAQI
14th Sep 20256410 PMAQI
14th Sep 20256311 PMAQI
15th Sep 20256012 AMAQI
15th Sep 2025571 AMAQI
15th Sep 2025572 AMAQI
15th Sep 2025603 AMAQI
15th Sep 2025594 AMAQI
15th Sep 2025605 AMAQI

28°C23/35°C

15th Sep 2025596 AMAQI
15th Sep 2025597 AMAQI
15th Sep 2025768 AMAQI
15th Sep 2025719 AMAQI
15th Sep 20257610 AMAQI
15th Sep 20257011 AMAQI
15th Sep 20256612 PMAQI
15th Sep 2025681 PMAQI
15th Sep 2025592 PMAQI
15th Sep 2025583 PMAQI
15th Sep 2025554 PMAQI
15th Sep 2025615 PMAQI
15th Sep 2025606 PMAQI
15th Sep 2025697 PMAQI
15th Sep 2025638 PMAQI
15th Sep 2025709 PMAQI
15th Sep 20256710 PMAQI
15th Sep 20256811 PMAQI
16th Sep 20256612 AMAQI
16th Sep 2025581 AMAQI
16th Sep 2025592 AMAQI
16th Sep 2025603 AMAQI
16th Sep 2025614 AMAQI
16th Sep 2025605 AMAQI

30°C25/36°C

16th Sep 2025616 AMAQI
16th Sep 2025627 AMAQI
16th Sep 2025678 AMAQI
16th Sep 2025709 AMAQI
16th Sep 20257010 AMAQI
16th Sep 20256411 AMAQI
16th Sep 20256212 PMAQI
16th Sep 2025581 PMAQI
16th Sep 2025562 PMAQI
16th Sep 2025573 PMAQI
16th Sep 2025524 PMAQI
16th Sep 2025545 PMAQI
16th Sep 2025656 PMAQI
16th Sep 2025617 PMAQI
16th Sep 2025658 PMAQI
16th Sep 2025659 PMAQI
16th Sep 20256410 PMAQI
16th Sep 20256211 PMAQI
17th Sep 20256412 AMAQI
17th Sep 2025601 AMAQI
17th Sep 2025612 AMAQI
17th Sep 2025623 AMAQI
17th Sep 2025614 AMAQI
17th Sep 2025625 AMAQI

31°C25/37°C

17th Sep 2025626 AMAQI
17th Sep 2025627 AMAQI
17th Sep 2025628 AMAQI
17th Sep 2025629 AMAQI
17th Sep 20256510 AMAQI
17th Sep 20256411 AMAQI
17th Sep 20256712 PMAQI
17th Sep 2025591 PMAQI
17th Sep 2025602 PMAQI
17th Sep 2025583 PMAQI
17th Sep 2025544 PMAQI
17th Sep 2025545 PMAQI
17th Sep 2025476 PMAQI
17th Sep 2025587 PMAQI
17th Sep 2025608 PMAQI
17th Sep 2025649 PMAQI
17th Sep 20257210 PMAQI
17th Sep 20257511 PMAQI
18th Sep 20257512 AMAQI
18th Sep 2025611 AMAQI
18th Sep 2025612 AMAQI
18th Sep 2025623 AMAQI
18th Sep 2025624 AMAQI
18th Sep 2025635 AMAQI

31°C24/38°C

18th Sep 2025626 AMAQI
18th Sep 2025627 AMAQI
18th Sep 2025468 AMAQI
18th Sep 2025449 AMAQI
18th Sep 20254410 AMAQI
18th Sep 20254111 AMAQI
18th Sep 20254812 PMAQI
18th Sep 2025571 PMAQI
18th Sep 2025322 PMAQI
18th Sep 2025603 PMAQI
18th Sep 2025504 PMAQI
18th Sep 2025625 PMAQI
18th Sep 2025706 PMAQI
18th Sep 2025777 PMAQI
18th Sep 2025698 PMAQI
18th Sep 2025699 PMAQI
18th Sep 20256110 PMAQI
18th Sep 20256011 PMAQI
19th Sep 20255812 AMAQI
19th Sep 2025631 AMAQI
19th Sep 2025632 AMAQI
19th Sep 2025623 AMAQI
19th Sep 2025614 AMAQI
19th Sep 2025605 AMAQI

22°C20/23°C

19th Sep 2025606 AMAQI
19th Sep 2025617 AMAQI
19th Sep 2025368 AMAQI
19th Sep 2025259 AMAQI
19th Sep 20255410 AMAQI
19th Sep 20253011 AMAQI
19th Sep 20254612 PMAQI
19th Sep 2025471 PMAQI
19th Sep 2025572 PMAQI
19th Sep 2025613 PMAQI
19th Sep 2025634 PMAQI
19th Sep 2025585 PMAQI
19th Sep 2025596 PMAQI
19th Sep 2025567 PMAQI
19th Sep 2025538 PMAQI
19th Sep 2025479 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20255211 PMAQI
20th Sep 20255612 AMAQI
20th Sep 2025601 AMAQI
20th Sep 2025612 AMAQI
20th Sep 2025603 AMAQI
20th Sep 2025594 AMAQI
20th Sep 2025585 AMAQI

19°C18/21°C

20th Sep 2025606 AMAQI
20th Sep 2025607 AMAQI
20th Sep 2025508 AMAQI
20th Sep 2025519 AMAQI
20th Sep 20254910 AMAQI
20th Sep 20255211 AMAQI
20th Sep 20254912 PMAQI
20th Sep 2025501 PMAQI
20th Sep 2025572 PMAQI
20th Sep 2025573 PMAQI
20th Sep 2025584 PMAQI
20th Sep 2025625 PMAQI
20th Sep 2025666 PMAQI
20th Sep 2025607 PMAQI
20th Sep 2025628 PMAQI
20th Sep 2025639 PMAQI
20th Sep 20256610 PMAQI
20th Sep 20256411 PMAQI
21st Sep 20256612 AMAQI
21st Sep 2025601 AMAQI
21st Sep 2025602 AMAQI
21st Sep 2025593 AMAQI
21st Sep 2025584 AMAQI
21st Sep 2025585 AMAQI

18°C17/20°C

21st Sep 2025586 AMAQI
21st Sep 2025587 AMAQI
21st Sep 2025678 AMAQI
21st Sep 2025729 AMAQI
21st Sep 20257510 AMAQI
21st Sep 20257611 AMAQI
21st Sep 20256812 PMAQI
21st Sep 2025691 PMAQI
21st Sep 2025702 PMAQI
21st Sep 2025663 PMAQI
21st Sep 2025584 PMAQI
21st Sep 2025585 PMAQI
21st Sep 2025716 PMAQI
21st Sep 2025677 PMAQI
21st Sep 2025678 PMAQI
21st Sep 2025659 PMAQI
21st Sep 20255910 PMAQI
21st Sep 20256111 PMAQI
22nd Sep 20256212 AMAQI
22nd Sep 2025601 AMAQI
22nd Sep 2025592 AMAQI
22nd Sep 2025613 AMAQI
22nd Sep 2025624 AMAQI
22nd Sep 2025625 AMAQI

19°C19/20°C

22nd Sep 2025626 AMAQI
22nd Sep 2025627 AMAQI
22nd Sep 2025548 AMAQI
22nd Sep 2025529 AMAQI
22nd Sep 20253610 AMAQI
22nd Sep 20254611 AMAQI
22nd Sep 20253312 PMAQI
22nd Sep 2025561 PMAQI
22nd Sep 2025522 PMAQI
22nd Sep 2025563 PMAQI
22nd Sep 2025614 PMAQI
22nd Sep 2025625 PMAQI
22nd Sep 2025686 PMAQI
22nd Sep 2025667 PMAQI
22nd Sep 2025648 PMAQI
22nd Sep 2025689 PMAQI
22nd Sep 20256610 PMAQI
22nd Sep 20256811 PMAQI
23rd Sep 20256612 AMAQI
23rd Sep 2025611 AMAQI
23rd Sep 2025612 AMAQI
23rd Sep 2025603 AMAQI
23rd Sep 2025584 AMAQI
23rd Sep 2025585 AMAQI

21°C19/24°C

23rd Sep 2025596 AMAQI
23rd Sep 2025597 AMAQI
23rd Sep 2025688 AMAQI
23rd Sep 2025729 AMAQI
23rd Sep 20257310 AMAQI
23rd Sep 20257211 AMAQI
23rd Sep 20256812 PMAQI
23rd Sep 2025601 PMAQI
23rd Sep 2025602 PMAQI
23rd Sep 2025853 PMAQI
23rd Sep 2025834 PMAQI
23rd Sep 2025845 PMAQI
23rd Sep 2025856 PMAQI
23rd Sep 2025807 PMAQI
23rd Sep 2025658 PMAQI
23rd Sep 2025629 PMAQI
23rd Sep 20256210 PMAQI
23rd Sep 20256511 PMAQI
24th Sep 20256112 AMAQI
24th Sep 2025591 AMAQI
24th Sep 2025592 AMAQI
24th Sep 2025613 AMAQI
24th Sep 2025624 AMAQI
24th Sep 2025625 AMAQI

20°C18/24°C

24th Sep 2025616 AMAQI
24th Sep 2025627 AMAQI
24th Sep 2025308 AMAQI
24th Sep 2025289 AMAQI
24th Sep 20251910 AMAQI
24th Sep 20252111 AMAQI
24th Sep 20253512 PMAQI
24th Sep 2025321 PMAQI
24th Sep 2025282 PMAQI
24th Sep 2025273 PMAQI
24th Sep 2025434 PMAQI
24th Sep 2025545 PMAQI
24th Sep 2025576 PMAQI
24th Sep 2025547 PMAQI
24th Sep 2025568 PMAQI
24th Sep 2025569 PMAQI
24th Sep 20255810 PMAQI
24th Sep 20255911 PMAQI
25th Sep 20256512 AMAQI
25th Sep 2025601 AMAQI
25th Sep 2025602 AMAQI
25th Sep 2025593 AMAQI
25th Sep 2025564 AMAQI
25th Sep 2025565 AMAQI

19°C18/20°C

25th Sep 2025566 AMAQI
25th Sep 2025577 AMAQI
25th Sep 2025428 AMAQI
25th Sep 2025269 AMAQI
25th Sep 20253710 AMAQI
25th Sep 20255511 AMAQI
25th Sep 20254212 PMAQI
25th Sep 2025531 PMAQI
25th Sep 2025572 PMAQI
25th Sep 2025573 PMAQI
25th Sep 2025644 PMAQI
25th Sep 2025535 PMAQI
25th Sep 2025336 PMAQI
25th Sep 2025437 PMAQI
25th Sep 2025448 PMAQI
25th Sep 2025509 PMAQI
25th Sep 20255310 PMAQI
25th Sep 20254411 PMAQI
26th Sep 20253312 AMAQI
26th Sep 2025231 AMAQI
26th Sep 202592 AMAQI
26th Sep 2025123 AMAQI
26th Sep 2025184 AMAQI
26th Sep 2025225 AMAQI

20°C19/22°C

26th Sep 2025176 AMAQI
26th Sep 2025207 AMAQI
26th Sep 2025258 AMAQI
26th Sep 2025349 AMAQI
26th Sep 20254610 AMAQI
26th Sep 20253711 AMAQI
26th Sep 20252412 PMAQI
26th Sep 2025251 PMAQI
26th Sep 2025292 PMAQI
26th Sep 2025343 PMAQI
26th Sep 2025434 PMAQI
26th Sep 2025515 PMAQI
26th Sep 2025776 PMAQI
26th Sep 2025937 PMAQI
26th Sep 2025978 PMAQI
26th Sep 2025989 PMAQI
26th Sep 20258010 PMAQI
26th Sep 20257811 PMAQI
27th Sep 20256912 AMAQI
27th Sep 2025701 AMAQI
27th Sep 2025722 AMAQI
27th Sep 2025713 AMAQI
27th Sep 2025674 AMAQI
27th Sep 2025585 AMAQI

20°C18/23°C

27th Sep 2025646 AMAQI
27th Sep 2025737 AMAQI
27th Sep 2025698 AMAQI
27th Sep 2025649 AMAQI
27th Sep 20255410 AMAQI
27th Sep 20254911 AMAQI
27th Sep 20253712 PMAQI
27th Sep 2025501 PMAQI
27th Sep 2025562 PMAQI
27th Sep 2025533 PMAQI
27th Sep 2025584 PMAQI
27th Sep 2025555 PMAQI
27th Sep 2025596 PMAQI
27th Sep 2025707 PMAQI
27th Sep 2025778 PMAQI
27th Sep 2025819 PMAQI
27th Sep 20259110 PMAQI
27th Sep 202511511 PMAQI
28th Sep 202511512 AMAQI
28th Sep 20251021 AMAQI
28th Sep 2025742 AMAQI
28th Sep 2025783 AMAQI
28th Sep 2025694 AMAQI
28th Sep 2025685 AMAQI

24°C21/29°C

28th Sep 2025736 AMAQI
28th Sep 2025837 AMAQI
28th Sep 2025728 AMAQI
28th Sep 2025619 AMAQI
28th Sep 20255910 AMAQI
28th Sep 20256711 AMAQI
28th Sep 20256712 PMAQI
28th Sep 2025661 PMAQI
28th Sep 2025642 PMAQI
28th Sep 2025603 PMAQI
28th Sep 2025594 PMAQI
28th Sep 2025585 PMAQI
28th Sep 2025616 PMAQI
28th Sep 2025707 PMAQI
28th Sep 2025748 PMAQI
28th Sep 2025709 PMAQI
28th Sep 20258010 PMAQI
28th Sep 20259711 PMAQI
29th Sep 202510612 AMAQI
29th Sep 20251281 AMAQI
29th Sep 20251362 AMAQI
29th Sep 20251403 AMAQI
29th Sep 20251514 AMAQI
29th Sep 20251515 AMAQI

27°C22/33°C

29th Sep 20251516 AMAQI
29th Sep 20251507 AMAQI
29th Sep 20251478 AMAQI
29th Sep 20251419 AMAQI
29th Sep 202510910 AMAQI
29th Sep 20259311 AMAQI
29th Sep 20258112 PMAQI
29th Sep 2025661 PMAQI
29th Sep 2025512 PMAQI
29th Sep 2025713 PMAQI
29th Sep 2025804 PMAQI
29th Sep 2025805 PMAQI
29th Sep 2025696 PMAQI
29th Sep 2025717 PMAQI
29th Sep 2025758 PMAQI
29th Sep 2025699 PMAQI
29th Sep 20258510 PMAQI
29th Sep 20257811 PMAQI
30th Sep 20257712 AMAQI
30th Sep 2025741 AMAQI
30th Sep 2025892 AMAQI
30th Sep 2025793 AMAQI
30th Sep 2025684 AMAQI
30th Sep 2025805 AMAQI

25°C22/28°C

30th Sep 2025686 AMAQI
30th Sep 2025757 AMAQI
30th Sep 2025768 AMAQI
30th Sep 2025549 AMAQI
30th Sep 20257010 AMAQI
30th Sep 20258911 AMAQI
30th Sep 20256812 PMAQI
30th Sep 2025531 PMAQI
30th Sep 2025532 PMAQI
30th Sep 2025623 PMAQI
30th Sep 2025734 PMAQI
30th Sep 2025735 PMAQI
30th Sep 2025646 PMAQI
30th Sep 2025637 PMAQI
30th Sep 2025588 PMAQI
30th Sep 2025549 PMAQI
30th Sep 20254910 PMAQI
30th Sep 20255311 PMAQI
1st Oct 20255512 AMAQI
1st Oct 2025541 AMAQI
1st Oct 2025582 AMAQI
1st Oct 2025643 AMAQI
1st Oct 2025624 AMAQI
1st Oct 2025565 AMAQI

25°C21/30°C

1st Oct 2025546 AMAQI
1st Oct 2025567 AMAQI
1st Oct 2025748 AMAQI
1st Oct 20251279 AMAQI
1st Oct 202510810 AMAQI
1st Oct 202511111 AMAQI
1st Oct 202512312 PMAQI
1st Oct 20251541 PMAQI
1st Oct 20251552 PMAQI
1st Oct 20251563 PMAQI
1st Oct 20251564 PMAQI
1st Oct 20251545 PMAQI
1st Oct 20251546 PMAQI
1st Oct 20251277 PMAQI
1st Oct 20251088 PMAQI
1st Oct 20251139 PMAQI
1st Oct 202510710 PMAQI
1st Oct 202511911 PMAQI
2nd Oct 202512412 AMAQI
2nd Oct 20251391 AMAQI
2nd Oct 20251192 AMAQI
2nd Oct 20251223 AMAQI
2nd Oct 20251344 AMAQI
2nd Oct 20251315 AMAQI

26°C22/31°C

2nd Oct 20251326 AMAQI
2nd Oct 20251277 AMAQI
2nd Oct 20251308 AMAQI
2nd Oct 20251179 AMAQI
2nd Oct 202510110 AMAQI
2nd Oct 20259211 AMAQI
2nd Oct 20259212 PMAQI
2nd Oct 2025911 PMAQI
2nd Oct 2025862 PMAQI
2nd Oct 2025863 PMAQI
2nd Oct 2025764 PMAQI
2nd Oct 2025735 PMAQI
2nd Oct 2025876 PMAQI
2nd Oct 20251007 PMAQI
2nd Oct 20251048 PMAQI
2nd Oct 20251059 PMAQI
2nd Oct 202510010 PMAQI
2nd Oct 20259311 PMAQI
3rd Oct 20259812 AMAQI
3rd Oct 2025941 AMAQI
3rd Oct 2025882 AMAQI
3rd Oct 2025953 AMAQI
3rd Oct 2025974 AMAQI
3rd Oct 2025995 AMAQI

29°C25/35°C

3rd Oct 20251096 AMAQI
3rd Oct 2025977 AMAQI
3rd Oct 2025938 AMAQI
3rd Oct 2025789 AMAQI
3rd Oct 20257210 AMAQI
3rd Oct 20257911 AMAQI
3rd Oct 20256812 PMAQI
3rd Oct 2025701 PMAQI
3rd Oct 2025712 PMAQI
3rd Oct 2025573 PMAQI
3rd Oct 2025814 PMAQI
3rd Oct 2025965 PMAQI
3rd Oct 20251026 PMAQI
3rd Oct 2025857 PMAQI
3rd Oct 20251028 PMAQI
3rd Oct 20251069 PMAQI
3rd Oct 202510110 PMAQI
3rd Oct 20259911 PMAQI
4th Oct 202510512 AMAQI
4th Oct 20251111 AMAQI
4th Oct 20251312 AMAQI
4th Oct 20251313 AMAQI
4th Oct 20251164 AMAQI
4th Oct 20251165 AMAQI

25°C20/32°C

4th Oct 20251176 AMAQI
4th Oct 2025987 AMAQI
4th Oct 2025758 AMAQI
4th Oct 2025689 AMAQI
4th Oct 20257210 AMAQI
4th Oct 20256711 AMAQI
4th Oct 20257212 PMAQI
4th Oct 2025741 PMAQI
4th Oct 2025762 PMAQI
4th Oct 2025823 PMAQI
4th Oct 2025944 PMAQI
4th Oct 20251035 PMAQI
4th Oct 20251136 PMAQI
4th Oct 20251277 PMAQI
4th Oct 20251238 PMAQI
4th Oct 20251049 PMAQI
4th Oct 202512010 PMAQI
4th Oct 202511711 PMAQI
5th Oct 202512112 AMAQI
5th Oct 20251221 AMAQI
5th Oct 20251272 AMAQI
5th Oct 20251263 AMAQI
5th Oct 20251134 AMAQI
5th Oct 20251085 AMAQI

26°C20/33°C

5th Oct 20251286 AMAQI
5th Oct 20251077 AMAQI
5th Oct 20251298 AMAQI
5th Oct 20251269 AMAQI
5th Oct 202514110 AMAQI
5th Oct 202513511 AMAQI
5th Oct 202512912 PMAQI
5th Oct 20251391 PMAQI
5th Oct 20251532 PMAQI
5th Oct 20251523 PMAQI
5th Oct 20251454 PMAQI
5th Oct 20251045 PMAQI
5th Oct 20251006 PMAQI
5th Oct 2025917 PMAQI
5th Oct 2025888 PMAQI
5th Oct 2025959 PMAQI
5th Oct 202510910 PMAQI
5th Oct 202512911 PMAQI
6th Oct 202512912 AMAQI
6th Oct 20251291 AMAQI
6th Oct 20251462 AMAQI
6th Oct 20251463 AMAQI
6th Oct 20251454 AMAQI
6th Oct 20251135 AMAQI

28°C22/35°C

6th Oct 20251176 AMAQI
6 AM
6th Oct 20251237 AMAQI
6th Oct 20251068 AMAQI
6th Oct 2025859 AMAQI
6th Oct 202510510 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 8 AM

71AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
11 AM - 2 PM

65AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 71), while the lowest AQI was between 11 AM to 2 PM (Avg. 65).
Night time
Avg. Highest Time
12 AM - 11 PM

73AQI

11 hours / Day
330 hours / Month
Avg. Lowest Time
12 AM - 11 PM

73AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 73), while the lowest AQI was between 12 AM to 11 PM (Avg. 73).

2025 Days Vs Air Quality

Hkust, Xiangtan, Hunan, China

2025

11%

31

54%

150

27%

74

7%

20

0.7%

2

0.3%

1

Total number of days with different AQI categories in last 279 days in 2025 (86 days remaining)

Good
31 Days
Moderate
150 Days
Poor
74 Days
Unhealthy
20 Days
Severe
2 Days
Hazardous
1 Days

Under WHO’s Safe Air Quality Limits: 11%

Health Risk Level:

Extreme

In 2025, 11% of 279 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.

Annual Air Quality Insights

Hkust, Xiangtan, Hunan, China

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
174AQI
2nd January 2025
177AQI
3rd January 2025
191AQI
4th January 2025
216AQI
5th January 2025
154AQI
6th January 2025
161AQI
7th January 2025
161AQI
8th January 2025
151AQI
9th January 2025
126AQI
10th January 2025
121AQI
11th January 2025
128AQI
12th January 2025
132AQI
13th January 2025
132AQI
14th January 2025
136AQI
15th January 2025
129AQI
16th January 2025
119AQI
17th January 2025
127AQI
18th January 2025
143AQI
19th January 2025
156AQI
20th January 2025
164AQI
21st January 2025
163AQI
22nd January 2025
162AQI
23rd January 2025
242AQI
24th January 2025
183AQI
25th January 2025
105AQI
26th January 2025
97AQI
27th January 2025
109AQI
28th January 2025
116AQI
29th January 2025
170AQI
30th January 2025
136AQI
31st January 2025
126AQI
1st February 2025
117AQI
2nd February 2025
122AQI
3rd February 2025
133AQI
4th February 2025
119AQI
5th February 2025
139AQI
6th February 2025
118AQI
7th February 2025
122AQI
8th February 2025
74AQI
9th February 2025
87AQI
10th February 2025
98AQI
11th February 2025
124AQI
12th February 2025
138AQI
13th February 2025
155AQI
14th February 2025
154AQI
15th February 2025
159AQI
16th February 2025
147AQI
17th February 2025
125AQI
18th February 2025
109AQI
19th February 2025
108AQI
20th February 2025
113AQI
21st February 2025
152AQI
22nd February 2025
82AQI
23rd February 2025
147AQI
24th February 2025
129AQI
25th February 2025
159AQI
26th February 2025
151AQI
27th February 2025
135AQI
28th February 2025
125AQI
1st March 2025
92AQI
2nd March 2025
90AQI
3rd March 2025
54AQI
4th March 2025
89AQI
5th March 2025
87AQI
6th March 2025
118AQI
7th March 2025
90AQI
8th March 2025
110AQI
9th March 2025
118AQI
10th March 2025
107AQI
11th March 2025
102AQI
12th March 2025
133AQI
13th March 2025
127AQI
14th March 2025
80AQI
15th March 2025
93AQI
16th March 2025
82AQI
17th March 2025
82AQI
18th March 2025
81AQI
19th March 2025
82AQI
20th March 2025
88AQI
21st March 2025
102AQI
22nd March 2025
106AQI
23rd March 2025
134AQI
24th March 2025
110AQI
25th March 2025
137AQI
26th March 2025
136AQI
27th March 2025
144AQI
28th March 2025
93AQI
29th March 2025
105AQI
30th March 2025
68AQI
31st March 2025
99AQI
1st April 2025
97AQI
2nd April 2025
106AQI
3rd April 2025
101AQI
4th April 2025
130AQI
5th April 2025
139AQI
6th April 2025
137AQI
7th April 2025
140AQI
8th April 2025
139AQI
9th April 2025
139AQI
10th April 2025
132AQI
11th April 2025
116AQI
12th April 2025
461AQI
13th April 2025
148AQI
14th April 2025
164AQI
15th April 2025
119AQI
16th April 2025
125AQI
17th April 2025
121AQI
18th April 2025
118AQI
19th April 2025
80AQI
20th April 2025
110AQI
21st April 2025
69AQI
22nd April 2025
91AQI
23rd April 2025
88AQI
24th April 2025
70AQI
25th April 2025
71AQI
26th April 2025
72AQI
27th April 2025
73AQI
28th April 2025
92AQI
29th April 2025
106AQI
30th April 2025
88AQI
1st May 2025
99AQI
2nd May 2025
90AQI
3rd May 2025
105AQI
4th May 2025
101AQI
5th May 2025
87AQI
6th May 2025
100AQI
7th May 2025
104AQI
8th May 2025
77AQI
9th May 2025
79AQI
10th May 2025
85AQI
11th May 2025
80AQI
12th May 2025
89AQI
13th May 2025
84AQI
14th May 2025
95AQI
15th May 2025
98AQI
16th May 2025
78AQI
17th May 2025
79AQI
18th May 2025
90AQI
19th May 2025
74AQI
20th May 2025
58AQI
21st May 2025
59AQI
22nd May 2025
58AQI
23rd May 2025
74AQI
24th May 2025
94AQI
25th May 2025
98AQI
26th May 2025
98AQI
27th May 2025
113AQI
28th May 2025
72AQI
29th May 2025
65AQI
30th May 2025
59AQI
31st May 2025
53AQI
1st June 2025
44AQI
2nd June 2025
64AQI
3rd June 2025
72AQI
4th June 2025
90AQI
5th June 2025
81AQI
6th June 2025
79AQI
7th June 2025
66AQI
8th June 2025
72AQI
9th June 2025
67AQI
10th June 2025
76AQI
11th June 2025
61AQI
12th June 2025
56AQI
13th June 2025
66AQI
14th June 2025
53AQI
15th June 2025
60AQI
16th June 2025
56AQI
17th June 2025
46AQI
18th June 2025
44AQI
19th June 2025
41AQI
20th June 2025
43AQI
21st June 2025
49AQI
22nd June 2025
53AQI
23rd June 2025
44AQI
24th June 2025
46AQI
25th June 2025
54AQI
26th June 2025
61AQI
27th June 2025
50AQI
28th June 2025
46AQI
29th June 2025
47AQI
30th June 2025
45AQI
1st July 2025
41AQI
2nd July 2025
34AQI
3rd July 2025
46AQI
4th July 2025
51AQI
5th July 2025
62AQI
6th July 2025
64AQI
7th July 2025
69AQI
8th July 2025
74AQI
9th July 2025
70AQI
10th July 2025
56AQI
11th July 2025
62AQI
12th July 2025
61AQI
13th July 2025
61AQI
14th July 2025
61AQI
15th July 2025
59AQI
16th July 2025
57AQI
17th July 2025
59AQI
18th July 2025
62AQI
19th July 2025
62AQI
20th July 2025
52AQI
21st July 2025
44AQI
22nd July 2025
42AQI
23rd July 2025
41AQI
24th July 2025
48AQI
25th July 2025
45AQI
26th July 2025
57AQI
27th July 2025
52AQI
28th July 2025
55AQI
29th July 2025
54AQI
30th July 2025
50AQI
31st July 2025
57AQI
1st August 2025
63AQI
2nd August 2025
69AQI
3rd August 2025
63AQI
4th August 2025
61AQI
5th August 2025
61AQI
6th August 2025
50AQI
7th August 2025
49AQI
8th August 2025
45AQI
9th August 2025
52AQI
10th August 2025
54AQI
11th August 2025
62AQI
12th August 2025
64AQI
13th August 2025
63AQI
14th August 2025
57AQI
15th August 2025
44AQI
16th August 2025
54AQI
17th August 2025
56AQI
18th August 2025
54AQI
19th August 2025
46AQI
20th August 2025
48AQI
21st August 2025
50AQI
22nd August 2025
50AQI
23rd August 2025
56AQI
24th August 2025
54AQI
25th August 2025
54AQI
26th August 2025
58AQI
27th August 2025
61AQI
28th August 2025
60AQI
29th August 2025
60AQI
30th August 2025
61AQI
31st August 2025
61AQI
1st September 2025
61AQI
2nd September 2025
61AQI
3rd September 2025
62AQI
4th September 2025
64AQI
5th September 2025
68AQI
6th September 2025
70AQI
7th September 2025
71AQI
8th September 2025
65AQI
9th September 2025
58AQI
10th September 2025
57AQI
11th September 2025
57AQI
12th September 2025
55AQI
13th September 2025
59AQI
14th September 2025
62AQI
15th September 2025
63AQI
16th September 2025
62AQI
17th September 2025
61AQI
18th September 2025
60AQI
19th September 2025
54AQI
20th September 2025
59AQI
21st September 2025
64AQI
22nd September 2025
59AQI
23rd September 2025
67AQI
24th September 2025
50AQI
25th September 2025
51AQI
26th September 2025
45AQI
27th September 2025
67AQI
28th September 2025
73AQI
29th September 2025
103AQI
30th September 2025
67AQI
1st October 2025
102AQI
2nd October 2025
107AQI
3rd October 2025
91AQI
4th October 2025
104AQI
5th October 2025
124AQI
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

149AQI

126AQI

101AQI

121AQI

84AQI

58AQI

55AQI

56AQI

63AQI

106AQI

No. of days

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

202590AQI

1
15
13
2
4
18
6
16
15
11
17
1
1
27
4
12
18
9
22
8
23
2
27
1
1
4
31
150
74
20
2
1

Highest AQI recorded in

January

149AQI

Lowest AQI recorded in

July

55AQI

2024105AQI

1
4
9
16
1
1
7
15
5
1
11
14
6
7
18
5
17
14
12
18
22
9
6
25
1
17
10
2
11
12
8
1
9
11
9
14
17
44
135
117
68
2

Highest AQI recorded in

December

147AQI

Lowest AQI recorded in

July

45AQI

2023100AQI

4
13
10
4
1
3
12
12
1
8
17
5
2
20
8
2
20
9
4
26
7
24
3
28
6
23
1
13
16
1
4
18
4
8
15
4
4
27
181
108
36
8

Highest AQI recorded in

January

153AQI

Lowest AQI recorded in

July

62AQI

2022105AQI

3
10
15
3
4
12
5
2
14
11
4
1
9
7
2
15
14
16
14
11
10
1
1
13
15
1
3
9
12
7
1
10
17
2
2
19
10
37
103
118
44
3

Highest AQI recorded in

January

148AQI

Lowest AQI recorded in

July

49AQI

2021106AQI

3
8
18
2
4
13
11
10
19
2
1
8
17
4
2
20
8
1
8
15
7
4
27
5
15
1
2
26
2
2
15
9
5
10
11
9
4
8
15
4
24
157
103
65
6

Highest AQI recorded in

January

155AQI

Lowest AQI recorded in

July

65AQI

202097AQI

3
6
4
2
8
11
12
6
10
20
5
22
4
6
22
3
3
13
14
4
5
13
9
1
6
15
8
2
5
22
2
34
116
75
39
2

Highest AQI recorded in

December

163AQI

Lowest AQI recorded in

June

58AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
106AQI
Least Polluted Year Recorded
2025(Avg.)
90AQI

Hkust's annual 2025 AQI (90) shows an average percentage change of -11.7% (improved AQI) compared to previous years: 2020 (97), 2021 (106), 2022 (105), 2023 (100), 2024 (105).