Causeway Bay, Hong Kong Island, Hong Kong, 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+
August Air Quality Analysis
Causeway Bay, Hong Kong Island, Hong Kong, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2022
141AQILowest AQI recorded on
22nd Aug 2021
36AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 56 of Moderate air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Causeway Bay, Hong Kong Island, Hong Kong, China
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
6AM2nd Aug
57AQI
Avg. Lowest Time
4PM2nd Aug
42AQI
Night time
Avg. Highest Time
8PM2nd Aug
59AQI
Avg. Lowest Time
12AM3rd Aug
54AQI
In the last 24 hours,
Causeway Bay's AQI reached its highest point of 59 at 8 PM during the Night, while the lowest point, 42, was recorded at 4 PM during the Day between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Causeway Bay, Hong Kong Island, Hong Kong, China
JulAug
04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025365 AMAQI
4th Jul 2025376 AMAQI
4th Jul 2025377 AMAQI
4th Jul 2025498 AMAQI
4th Jul 2025609 AMAQI
4th Jul 20256410 AMAQI
4th Jul 20256411 AMAQI
4th Jul 20256012 PMAQI
4th Jul 2025601 PMAQI
4th Jul 2025582 PMAQI
4th Jul 2025603 PMAQI
4th Jul 2025664 PMAQI
4th Jul 2025625 PMAQI
4th Jul 2025606 PMAQI
4th Jul 2025617 PMAQI
4th Jul 2025578 PMAQI
4th Jul 2025579 PMAQI
4th Jul 20255810 PMAQI
4th Jul 20255411 PMAQI
5th Jul 20255112 AMAQI
5th Jul 2025401 AMAQI
5th Jul 2025362 AMAQI
5th Jul 2025383 AMAQI
5th Jul 2025434 AMAQI
29°C28/30°C
5th Jul 2025445 AMAQI
5th Jul 2025446 AMAQI
5th Jul 2025437 AMAQI
5th Jul 2025448 AMAQI
5th Jul 2025529 AMAQI
5th Jul 20255810 AMAQI
5th Jul 20255811 AMAQI
5th Jul 20256912 PMAQI
5th Jul 2025721 PMAQI
5th Jul 2025762 PMAQI
5th Jul 2025763 PMAQI
5th Jul 2025784 PMAQI
5th Jul 2025775 PMAQI
5th Jul 2025686 PMAQI
5th Jul 2025607 PMAQI
5th Jul 2025488 PMAQI
5th Jul 2025469 PMAQI
5th Jul 20254410 PMAQI
5th Jul 20255111 PMAQI
6th Jul 20254012 AMAQI
6th Jul 2025381 AMAQI
6th Jul 2025402 AMAQI
6th Jul 2025443 AMAQI
6th Jul 2025484 AMAQI
29°C28/31°C
6th Jul 2025485 AMAQI
6th Jul 2025476 AMAQI
6th Jul 2025497 AMAQI
6th Jul 2025438 AMAQI
6th Jul 2025439 AMAQI
6th Jul 20254310 AMAQI
6th Jul 20255211 AMAQI
6th Jul 20256012 PMAQI
6th Jul 2025631 PMAQI
6th Jul 2025632 PMAQI
6th Jul 2025653 PMAQI
6th Jul 2025804 PMAQI
6th Jul 2025815 PMAQI
6th Jul 2025696 PMAQI
6th Jul 2025627 PMAQI
6th Jul 2025548 PMAQI
6th Jul 2025539 PMAQI
6th Jul 20255310 PMAQI
6th Jul 20254311 PMAQI
7th Jul 20254212 AMAQI
7th Jul 2025431 AMAQI
7th Jul 2025422 AMAQI
7th Jul 2025443 AMAQI
7th Jul 2025474 AMAQI
29°C28/31°C
7th Jul 2025465 AMAQI
7th Jul 2025476 AMAQI
7th Jul 2025467 AMAQI
7th Jul 2025648 AMAQI
7th Jul 2025749 AMAQI
7th Jul 20258010 AMAQI
7th Jul 20258311 AMAQI
7th Jul 20258212 PMAQI
7th Jul 2025801 PMAQI
7th Jul 2025732 PMAQI
7th Jul 2025793 PMAQI
7th Jul 2025774 PMAQI
7th Jul 2025795 PMAQI
7th Jul 2025706 PMAQI
7th Jul 2025587 PMAQI
7th Jul 2025468 PMAQI
7th Jul 2025449 PMAQI
7th Jul 20254810 PMAQI
7th Jul 20254411 PMAQI
8th Jul 20254412 AMAQI
8th Jul 2025451 AMAQI
8th Jul 2025432 AMAQI
8th Jul 2025483 AMAQI
8th Jul 2025554 AMAQI
30°C29/31°C
8th Jul 2025545 AMAQI
8th Jul 2025546 AMAQI
8th Jul 2025547 AMAQI
8th Jul 2025498 AMAQI
8th Jul 2025409 AMAQI
8th Jul 20254710 AMAQI
8th Jul 20254211 AMAQI
8th Jul 20254012 PMAQI
8th Jul 2025381 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025503 PMAQI
8th Jul 2025474 PMAQI
8th Jul 2025465 PMAQI
8th Jul 2025506 PMAQI
8th Jul 2025527 PMAQI
8th Jul 2025528 PMAQI
8th Jul 2025549 PMAQI
8th Jul 20255410 PMAQI
8th Jul 20255211 PMAQI
9th Jul 20255212 AMAQI
9th Jul 2025521 AMAQI
9th Jul 2025512 AMAQI
9th Jul 2025503 AMAQI
9th Jul 2025494 AMAQI
29°C29/30°C
9th Jul 2025495 AMAQI
9th Jul 2025486 AMAQI
9th Jul 2025487 AMAQI
9th Jul 2025458 AMAQI
9th Jul 2025529 AMAQI
9th Jul 20255210 AMAQI
9th Jul 20255111 AMAQI
9th Jul 20255212 PMAQI
9th Jul 2025531 PMAQI
9th Jul 2025642 PMAQI
9th Jul 2025643 PMAQI
9th Jul 2025644 PMAQI
9th Jul 2025605 PMAQI
9th Jul 2025566 PMAQI
9th Jul 2025567 PMAQI
9th Jul 2025548 PMAQI
9th Jul 2025569 PMAQI
9th Jul 20255810 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255212 AMAQI
10th Jul 2025501 AMAQI
10th Jul 2025492 AMAQI
10th Jul 2025503 AMAQI
10th Jul 2025524 AMAQI
30°C28/31°C
10th Jul 2025525 AMAQI
10th Jul 2025516 AMAQI
10th Jul 2025527 AMAQI
10th Jul 2025438 AMAQI
10th Jul 2025529 AMAQI
10th Jul 20255910 AMAQI
10th Jul 20255911 AMAQI
10th Jul 20255712 PMAQI
10th Jul 2025591 PMAQI
10th Jul 2025542 PMAQI
10th Jul 2025603 PMAQI
10th Jul 2025644 PMAQI
10th Jul 2025745 PMAQI
10th Jul 2025636 PMAQI
10th Jul 2025587 PMAQI
10th Jul 2025548 PMAQI
10th Jul 2025569 PMAQI
10th Jul 20255710 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20255612 AMAQI
11th Jul 2025521 AMAQI
11th Jul 2025502 AMAQI
11th Jul 2025523 AMAQI
11th Jul 2025514 AMAQI
28°C27/29°C
11th Jul 2025515 AMAQI
11th Jul 2025526 AMAQI
11th Jul 2025527 AMAQI
11th Jul 2025548 AMAQI
11th Jul 2025379 AMAQI
11th Jul 20253710 AMAQI
11th Jul 20256611 AMAQI
11th Jul 20256412 PMAQI
11th Jul 2025641 PMAQI
11th Jul 2025642 PMAQI
11th Jul 2025583 PMAQI
11th Jul 2025624 PMAQI
11th Jul 2025615 PMAQI
11th Jul 2025576 PMAQI
11th Jul 2025587 PMAQI
11th Jul 2025578 PMAQI
11th Jul 2025609 PMAQI
11th Jul 20256210 PMAQI
11th Jul 20256211 PMAQI
12th Jul 20256212 AMAQI
12th Jul 2025531 AMAQI
12th Jul 2025502 AMAQI
12th Jul 2025523 AMAQI
12th Jul 2025524 AMAQI
27°C27/28°C
12th Jul 2025525 AMAQI
12th Jul 2025526 AMAQI
12th Jul 2025527 AMAQI
12th Jul 2025358 AMAQI
12th Jul 2025449 AMAQI
12th Jul 20255510 AMAQI
12th Jul 20255811 AMAQI
12th Jul 20255912 PMAQI
12th Jul 2025621 PMAQI
12th Jul 2025602 PMAQI
12th Jul 2025563 PMAQI
12th Jul 2025524 PMAQI
12th Jul 2025585 PMAQI
12th Jul 2025586 PMAQI
12th Jul 2025557 PMAQI
12th Jul 2025568 PMAQI
12th Jul 2025609 PMAQI
12th Jul 20256210 PMAQI
12th Jul 20256011 PMAQI
13th Jul 20256112 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025522 AMAQI
13th Jul 2025533 AMAQI
13th Jul 2025534 AMAQI
29°C28/30°C
13th Jul 2025535 AMAQI
13th Jul 2025536 AMAQI
13th Jul 2025537 AMAQI
13th Jul 2025518 AMAQI
13th Jul 2025579 AMAQI
13th Jul 20255410 AMAQI
13th Jul 20255511 AMAQI
13th Jul 20255612 PMAQI
13th Jul 2025541 PMAQI
13th Jul 2025562 PMAQI
13th Jul 2025573 PMAQI
13th Jul 2025584 PMAQI
13th Jul 2025585 PMAQI
13th Jul 2025546 PMAQI
13th Jul 2025547 PMAQI
13th Jul 2025548 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255510 PMAQI
13th Jul 20255611 PMAQI
14th Jul 20255612 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025542 AMAQI
14th Jul 2025543 AMAQI
14th Jul 2025544 AMAQI
29°C28/30°C
14th Jul 2025545 AMAQI
14th Jul 2025546 AMAQI
14th Jul 2025547 AMAQI
14th Jul 2025518 AMAQI
14th Jul 2025689 AMAQI
14th Jul 20256010 AMAQI
14th Jul 20256211 AMAQI
14th Jul 20256512 PMAQI
14th Jul 2025601 PMAQI
14th Jul 2025632 PMAQI
14th Jul 2025613 PMAQI
14th Jul 2025584 PMAQI
14th Jul 2025585 PMAQI
14th Jul 2025556 PMAQI
14th Jul 2025527 PMAQI
14th Jul 2025538 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255510 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025531 AMAQI
15th Jul 2025542 AMAQI
15th Jul 2025543 AMAQI
15th Jul 2025554 AMAQI
29°C28/30°C
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025557 AMAQI
15th Jul 2025458 AMAQI
15th Jul 2025529 AMAQI
15th Jul 20256710 AMAQI
15th Jul 20255811 AMAQI
15th Jul 20255312 PMAQI
15th Jul 2025531 PMAQI
15th Jul 2025552 PMAQI
15th Jul 2025593 PMAQI
15th Jul 2025604 PMAQI
15th Jul 2025555 PMAQI
15th Jul 2025546 PMAQI
15th Jul 2025537 PMAQI
15th Jul 2025558 PMAQI
15th Jul 2025589 PMAQI
15th Jul 20255910 PMAQI
15th Jul 20255711 PMAQI
16th Jul 20255612 AMAQI
16th Jul 2025541 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025543 AMAQI
16th Jul 2025544 AMAQI
29°C29/30°C
16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025508 AMAQI
16th Jul 2025509 AMAQI
16th Jul 20255210 AMAQI
16th Jul 20255511 AMAQI
16th Jul 20255612 PMAQI
16th Jul 2025551 PMAQI
16th Jul 2025562 PMAQI
16th Jul 2025543 PMAQI
16th Jul 2025584 PMAQI
16th Jul 2025555 PMAQI
16th Jul 2025566 PMAQI
16th Jul 2025577 PMAQI
16th Jul 2025558 PMAQI
16th Jul 2025549 PMAQI
16th Jul 20255610 PMAQI
16th Jul 20255511 PMAQI
17th Jul 20255412 AMAQI
17th Jul 2025541 AMAQI
17th Jul 2025532 AMAQI
17th Jul 2025543 AMAQI
17th Jul 2025534 AMAQI
29°C29/30°C
17th Jul 2025545 AMAQI
17th Jul 2025536 AMAQI
17th Jul 2025547 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025809 AMAQI
17th Jul 20255810 AMAQI
17th Jul 20255711 AMAQI
17th Jul 20255812 PMAQI
17th Jul 2025591 PMAQI
17th Jul 2025652 PMAQI
17th Jul 2025703 PMAQI
17th Jul 2025684 PMAQI
17th Jul 2025665 PMAQI
17th Jul 2025686 PMAQI
17th Jul 2025617 PMAQI
17th Jul 2025568 PMAQI
17th Jul 2025619 PMAQI
17th Jul 20256410 PMAQI
17th Jul 20256411 PMAQI
18th Jul 20256112 AMAQI
18th Jul 2025551 AMAQI
18th Jul 2025522 AMAQI
18th Jul 2025543 AMAQI
18th Jul 2025554 AMAQI
30°C29/31°C
18th Jul 2025565 AMAQI
18th Jul 2025556 AMAQI
18th Jul 2025557 AMAQI
18th Jul 2025578 AMAQI
18th Jul 2025649 AMAQI
18th Jul 20256910 AMAQI
18th Jul 20257511 AMAQI
18th Jul 20258012 PMAQI
18th Jul 2025871 PMAQI
18th Jul 2025662 PMAQI
18th Jul 2025593 PMAQI
18th Jul 2025584 PMAQI
18th Jul 2025585 PMAQI
18th Jul 2025706 PMAQI
18th Jul 2025707 PMAQI
18th Jul 2025648 PMAQI
18th Jul 2025659 PMAQI
18th Jul 20256310 PMAQI
18th Jul 20256611 PMAQI
19th Jul 20257012 AMAQI
19th Jul 2025541 AMAQI
19th Jul 2025542 AMAQI
19th Jul 2025563 AMAQI
19th Jul 2025574 AMAQI
30°C29/32°C
19th Jul 2025575 AMAQI
19th Jul 2025586 AMAQI
19th Jul 2025587 AMAQI
19th Jul 2025888 AMAQI
19th Jul 2025989 AMAQI
19th Jul 20259410 AMAQI
19th Jul 20258811 AMAQI
19th Jul 20259212 PMAQI
19th Jul 2025871 PMAQI
19th Jul 2025762 PMAQI
19th Jul 2025873 PMAQI
19th Jul 2025824 PMAQI
19th Jul 2025745 PMAQI
19th Jul 2025746 PMAQI
19th Jul 2025627 PMAQI
19th Jul 2025598 PMAQI
19th Jul 2025629 PMAQI
19th Jul 20255610 PMAQI
19th Jul 20255611 PMAQI
20th Jul 20256012 AMAQI
20th Jul 2025571 AMAQI
20th Jul 2025562 AMAQI
20th Jul 2025603 AMAQI
20th Jul 2025634 AMAQI
29°C27/32°C
20th Jul 2025645 AMAQI
20th Jul 2025636 AMAQI
20th Jul 2025647 AMAQI
20th Jul 2025458 AMAQI
20th Jul 2025189 AMAQI
20th Jul 20252110 AMAQI
20th Jul 20252011 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025361 PMAQI
20th Jul 2025282 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025304 PMAQI
20th Jul 2025185 PMAQI
20th Jul 2025226 PMAQI
20th Jul 2025307 PMAQI
20th Jul 2025478 PMAQI
20th Jul 2025479 PMAQI
20th Jul 20254510 PMAQI
20th Jul 20254711 PMAQI
21st Jul 20255212 AMAQI
21st Jul 2025571 AMAQI
21st Jul 2025602 AMAQI
21st Jul 2025563 AMAQI
21st Jul 2025544 AMAQI
28°C27/28°C
21st Jul 2025545 AMAQI
21st Jul 2025546 AMAQI
21st Jul 2025547 AMAQI
21st Jul 2025528 AMAQI
21st Jul 2025539 AMAQI
21st Jul 20255610 AMAQI
21st Jul 20255611 AMAQI
21st Jul 20255512 PMAQI
21st Jul 2025581 PMAQI
21st Jul 2025622 PMAQI
21st Jul 2025593 PMAQI
21st Jul 2025504 PMAQI
21st Jul 2025555 PMAQI
21st Jul 2025536 PMAQI
21st Jul 2025587 PMAQI
21st Jul 2025568 PMAQI
21st Jul 2025559 PMAQI
21st Jul 20255810 PMAQI
21st Jul 20255611 PMAQI
22nd Jul 20255412 AMAQI
22nd Jul 2025541 AMAQI
22nd Jul 2025542 AMAQI
22nd Jul 2025543 AMAQI
22nd Jul 2025544 AMAQI
28°C28/28°C
22nd Jul 2025545 AMAQI
22nd Jul 2025546 AMAQI
22nd Jul 2025547 AMAQI
22nd Jul 2025418 AMAQI
22nd Jul 2025449 AMAQI
22nd Jul 20254810 AMAQI
22nd Jul 20255411 AMAQI
22nd Jul 20255912 PMAQI
22nd Jul 2025571 PMAQI
22nd Jul 2025592 PMAQI
22nd Jul 2025603 PMAQI
22nd Jul 2025634 PMAQI
22nd Jul 2025605 PMAQI
22nd Jul 2025606 PMAQI
22nd Jul 2025607 PMAQI
22nd Jul 2025588 PMAQI
22nd Jul 2025549 PMAQI
22nd Jul 20255410 PMAQI
22nd Jul 20255311 PMAQI
23rd Jul 20255312 AMAQI
23rd Jul 2025541 AMAQI
23rd Jul 2025532 AMAQI
23rd Jul 2025533 AMAQI
23rd Jul 2025524 AMAQI
28°C27/29°C
23rd Jul 2025535 AMAQI
23rd Jul 2025536 AMAQI
23rd Jul 2025537 AMAQI
23rd Jul 2025458 AMAQI
23rd Jul 2025489 AMAQI
23rd Jul 20255210 AMAQI
23rd Jul 20255411 AMAQI
23rd Jul 20255412 PMAQI
23rd Jul 2025561 PMAQI
23rd Jul 2025532 PMAQI
23rd Jul 2025533 PMAQI
23rd Jul 2025524 PMAQI
23rd Jul 2025535 PMAQI
23rd Jul 2025546 PMAQI
23rd Jul 2025537 PMAQI
23rd Jul 2025568 PMAQI
23rd Jul 2025599 PMAQI
23rd Jul 20255910 PMAQI
23rd Jul 20255711 PMAQI
24th Jul 20255912 AMAQI
24th Jul 2025551 AMAQI
24th Jul 2025522 AMAQI
24th Jul 2025523 AMAQI
24th Jul 2025524 AMAQI
28°C27/29°C
24th Jul 2025525 AMAQI
24th Jul 2025526 AMAQI
24th Jul 2025527 AMAQI
24th Jul 2025528 AMAQI
24th Jul 2025639 AMAQI
24th Jul 20256910 AMAQI
24th Jul 20256811 AMAQI
24th Jul 20256812 PMAQI
24th Jul 2025741 PMAQI
24th Jul 2025742 PMAQI
24th Jul 2025753 PMAQI
24th Jul 2025704 PMAQI
24th Jul 2025595 PMAQI
24th Jul 2025736 PMAQI
24th Jul 2025727 PMAQI
24th Jul 2025628 PMAQI
24th Jul 2025629 PMAQI
24th Jul 20256510 PMAQI
24th Jul 20256411 PMAQI
25th Jul 20256412 AMAQI
25th Jul 2025531 AMAQI
25th Jul 2025522 AMAQI
25th Jul 2025543 AMAQI
25th Jul 2025554 AMAQI
29°C27/30°C
25th Jul 2025555 AMAQI
25th Jul 2025556 AMAQI
25th Jul 2025557 AMAQI
25th Jul 2025608 AMAQI
25th Jul 2025689 AMAQI
25th Jul 20256310 AMAQI
25th Jul 20255611 AMAQI
25th Jul 20256612 PMAQI
25th Jul 2025741 PMAQI
25th Jul 2025912 PMAQI
25th Jul 2025883 PMAQI
25th Jul 2025904 PMAQI
25th Jul 2025845 PMAQI
25th Jul 2025886 PMAQI
25th Jul 2025787 PMAQI
25th Jul 2025648 PMAQI
25th Jul 2025639 PMAQI
25th Jul 20256210 PMAQI
25th Jul 20255811 PMAQI
26th Jul 20255612 AMAQI
26th Jul 2025541 AMAQI
26th Jul 2025542 AMAQI
26th Jul 2025563 AMAQI
26th Jul 2025584 AMAQI
29°C28/31°C
26th Jul 2025585 AMAQI
26th Jul 2025586 AMAQI
26th Jul 2025587 AMAQI
26th Jul 2025588 AMAQI
26th Jul 2025669 AMAQI
26th Jul 20256810 AMAQI
26th Jul 20257611 AMAQI
26th Jul 20257212 PMAQI
26th Jul 2025751 PMAQI
26th Jul 2025832 PMAQI
26th Jul 2025793 PMAQI
26th Jul 2025864 PMAQI
26th Jul 2025815 PMAQI
26th Jul 2025886 PMAQI
26th Jul 2025757 PMAQI
26th Jul 2025698 PMAQI
26th Jul 2025689 PMAQI
26th Jul 20257010 PMAQI
26th Jul 20256911 PMAQI
27th Jul 20256212 AMAQI
27th Jul 2025581 AMAQI
27th Jul 2025552 AMAQI
27th Jul 2025583 AMAQI
27th Jul 2025594 AMAQI
29°C28/31°C
27th Jul 2025595 AMAQI
27th Jul 2025586 AMAQI
27th Jul 2025597 AMAQI
27th Jul 2025638 AMAQI
27th Jul 2025649 AMAQI
27th Jul 20256810 AMAQI
27th Jul 20255811 AMAQI
27th Jul 20255612 PMAQI
27th Jul 2025621 PMAQI
27th Jul 2025632 PMAQI
27th Jul 2025753 PMAQI
27th Jul 2025724 PMAQI
27th Jul 2025725 PMAQI
27th Jul 2025556 PMAQI
27th Jul 2025547 PMAQI
27th Jul 2025598 PMAQI
27th Jul 2025589 PMAQI
27th Jul 20256010 PMAQI
27th Jul 20256011 PMAQI
28th Jul 20255812 AMAQI
28th Jul 2025571 AMAQI
28th Jul 2025572 AMAQI
28th Jul 2025583 AMAQI
28th Jul 2025584 AMAQI
29°C28/30°C
28th Jul 2025585 AMAQI
28th Jul 2025586 AMAQI
28th Jul 2025587 AMAQI
28th Jul 2025408 AMAQI
28th Jul 2025409 AMAQI
28th Jul 20255010 AMAQI
28th Jul 20255911 AMAQI
28th Jul 20255912 PMAQI
28th Jul 2025621 PMAQI
28th Jul 2025692 PMAQI
28th Jul 2025883 PMAQI
28th Jul 2025874 PMAQI
28th Jul 2025845 PMAQI
28th Jul 2025766 PMAQI
28th Jul 2025717 PMAQI
28th Jul 2025668 PMAQI
28th Jul 2025689 PMAQI
28th Jul 20256410 PMAQI
28th Jul 20256611 PMAQI
29th Jul 20256412 AMAQI
29th Jul 2025581 AMAQI
29th Jul 2025572 AMAQI
29th Jul 2025573 AMAQI
29th Jul 2025574 AMAQI
29°C28/30°C
29th Jul 2025575 AMAQI
29th Jul 2025586 AMAQI
29th Jul 2025577 AMAQI
29th Jul 2025518 AMAQI
29th Jul 2025559 AMAQI
29th Jul 20254810 AMAQI
29th Jul 20254111 AMAQI
29th Jul 20253812 PMAQI
29th Jul 2025521 PMAQI
29th Jul 2025572 PMAQI
29th Jul 2025653 PMAQI
29th Jul 2025684 PMAQI
29th Jul 2025685 PMAQI
29th Jul 2025666 PMAQI
29th Jul 2025667 PMAQI
29th Jul 2025658 PMAQI
29th Jul 2025649 PMAQI
29th Jul 20256510 PMAQI
29th Jul 20256411 PMAQI
30th Jul 20256112 AMAQI
30th Jul 2025581 AMAQI
30th Jul 2025562 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025564 AMAQI
29°C28/30°C
30th Jul 2025565 AMAQI
30th Jul 2025566 AMAQI
30th Jul 2025567 AMAQI
30th Jul 2025608 AMAQI
30th Jul 2025719 AMAQI
30th Jul 20257910 AMAQI
30th Jul 20257811 AMAQI
30th Jul 20258412 PMAQI
30th Jul 2025801 PMAQI
30th Jul 2025952 PMAQI
30th Jul 2025933 PMAQI
30th Jul 2025844 PMAQI
30th Jul 2025745 PMAQI
30th Jul 2025696 PMAQI
30th Jul 2025677 PMAQI
30th Jul 2025648 PMAQI
30th Jul 2025649 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20256411 PMAQI
31st Jul 20256212 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025564 AMAQI
29°C29/31°C
31st Jul 2025565 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255410 AMAQI
31st Jul 20255611 AMAQI
31st Jul 20255512 PMAQI
31st Jul 2025591 PMAQI
31st Jul 2025562 PMAQI
31st Jul 2025583 PMAQI
31st Jul 2025584 PMAQI
31st Jul 2025595 PMAQI
31st Jul 2025606 PMAQI
31st Jul 2025577 PMAQI
31st Jul 2025588 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20255910 PMAQI
31st Jul 20255811 PMAQI
1st Aug 20255812 AMAQI
1st Aug 2025581 AMAQI
1st Aug 2025582 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025544 AMAQI
29°C28/29°C
1st Aug 2025545 AMAQI
1st Aug 2025556 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025548 AMAQI
1st Aug 2025569 AMAQI
1st Aug 20255110 AMAQI
1st Aug 20255611 AMAQI
1st Aug 20255612 PMAQI
1st Aug 2025531 PMAQI
1st Aug 2025532 PMAQI
1st Aug 2025563 PMAQI
1st Aug 2025544 PMAQI
1st Aug 2025525 PMAQI
1st Aug 2025566 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025549 PMAQI
1st Aug 20255510 PMAQI
1st Aug 20255611 PMAQI
2nd Aug 20255412 AMAQI
2nd Aug 2025561 AMAQI
2nd Aug 2025562 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025564 AMAQI
29°C28/30°C
2nd Aug 2025565 AMAQI
2nd Aug 2025576 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025538 AMAQI
2nd Aug 2025519 AMAQI
2nd Aug 20255210 AMAQI
2nd Aug 20255311 AMAQI
2nd Aug 20254812 PMAQI
2nd Aug 2025491 PMAQI
2nd Aug 2025462 PMAQI
2nd Aug 2025473 PMAQI
2nd Aug 2025424 PMAQI
2nd Aug 2025505 PMAQI
2nd Aug 2025456 PMAQI
2nd Aug 2025527 PMAQI
2nd Aug 2025598 PMAQI
2nd Aug 2025599 PMAQI
2nd Aug 20255710 PMAQI
2nd Aug 20255611 PMAQI
3rd Aug 20255412 AMAQI
3rd Aug 2025571 AMAQI
3rd Aug 2025582 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025564 AMAQI
28°C28/29°C
3rd Aug 2025565 AMAQI
5 AM3rd Aug 2025566 AMAQI
3rd Aug 2025557 AMAQI
3rd Aug 2025528 AMAQI
3rd Aug 2025459 AMAQI
3rd Aug 20255510 AMAQI
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
9 AM - 7 PM
61AQI
11 hours / Day
330 hours / Month
Avg. Lowest Time
5 AM - 8 AM
53AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 7 PM (Avg. 61), while the lowest AQI was between 5 AM to 8 AM (Avg. 53).
Night time
Avg. Highest Time
8 PM - 11 PM
58AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
1 AM - 4 AM
53AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 58), while the lowest AQI was between 1 AM to 4 AM (Avg. 53).
2025 Days Vs Air Quality
Causeway Bay, Hong Kong Island, Hong Kong, China
2025
13%
28
79%
169
8%
17
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
28 DaysModerate
169 DaysPoor
17 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 13%
Health Risk Level:
Extreme
In 2025, 13% of 215 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
Causeway Bay, Hong Kong Island, Hong Kong, 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.
1st January 2025
117AQI
117AQI
2nd January 2025
145AQI
145AQI
3rd January 2025
112AQI
112AQI
4th January 2025
114AQI
114AQI
5th January 2025
110AQI
110AQI
6th January 2025
110AQI
110AQI
7th January 2025
98AQI
98AQI
8th January 2025
108AQI
108AQI
9th January 2025
113AQI
113AQI
10th January 2025
91AQI
91AQI
11th January 2025
102AQI
102AQI
12th January 2025
77AQI
77AQI
13th January 2025
82AQI
82AQI
14th January 2025
76AQI
76AQI
15th January 2025
87AQI
87AQI
16th January 2025
118AQI
118AQI
17th January 2025
95AQI
95AQI
18th January 2025
107AQI
107AQI
19th January 2025
100AQI
100AQI
20th January 2025
98AQI
98AQI
21st January 2025
92AQI
92AQI
22nd January 2025
94AQI
94AQI
23rd January 2025
84AQI
84AQI
24th January 2025
73AQI
73AQI
25th January 2025
67AQI
67AQI
26th January 2025
59AQI
59AQI
27th January 2025
63AQI
63AQI
28th January 2025
62AQI
62AQI
29th January 2025
88AQI
88AQI
30th January 2025
65AQI
65AQI
31st January 2025
68AQI
68AQI
1st February 2025
59AQI
59AQI
2nd February 2025
64AQI
64AQI
3rd February 2025
49AQI
49AQI
4th February 2025
57AQI
57AQI
5th February 2025
79AQI
79AQI
6th February 2025
69AQI
69AQI
7th February 2025
67AQI
67AQI
8th February 2025
70AQI
70AQI
9th February 2025
61AQI
61AQI
10th February 2025
65AQI
65AQI
11th February 2025
64AQI
64AQI
12th February 2025
64AQI
64AQI
13th February 2025
91AQI
91AQI
14th February 2025
90AQI
90AQI
15th February 2025
85AQI
85AQI
16th February 2025
127AQI
127AQI
17th February 2025
95AQI
95AQI
18th February 2025
130AQI
130AQI
19th February 2025
80AQI
80AQI
20th February 2025
93AQI
93AQI
21st February 2025
86AQI
86AQI
22nd February 2025
79AQI
79AQI
23rd February 2025
63AQI
63AQI
24th February 2025
63AQI
63AQI
25th February 2025
91AQI
91AQI
26th February 2025
98AQI
98AQI
27th February 2025
82AQI
82AQI
28th February 2025
80AQI
80AQI
1st March 2025
79AQI
79AQI
2nd March 2025
73AQI
73AQI
3rd March 2025
70AQI
70AQI
4th March 2025
67AQI
67AQI
5th March 2025
56AQI
56AQI
6th March 2025
52AQI
52AQI
7th March 2025
59AQI
59AQI
8th March 2025
68AQI
68AQI
9th March 2025
66AQI
66AQI
10th March 2025
72AQI
72AQI
11th March 2025
72AQI
72AQI
12th March 2025
70AQI
70AQI
13th March 2025
81AQI
81AQI
14th March 2025
70AQI
70AQI
15th March 2025
63AQI
63AQI
16th March 2025
50AQI
50AQI
17th March 2025
76AQI
76AQI
18th March 2025
71AQI
71AQI
19th March 2025
78AQI
78AQI
20th March 2025
81AQI
81AQI
21st March 2025
83AQI
83AQI
22nd March 2025
79AQI
79AQI
23rd March 2025
82AQI
82AQI
24th March 2025
86AQI
86AQI
25th March 2025
80AQI
80AQI
26th March 2025
68AQI
68AQI
27th March 2025
68AQI
68AQI
28th March 2025
74AQI
74AQI
29th March 2025
55AQI
55AQI
30th March 2025
51AQI
51AQI
31st March 2025
51AQI
51AQI
1st April 2025
58AQI
58AQI
2nd April 2025
58AQI
58AQI
3rd April 2025
65AQI
65AQI
4th April 2025
67AQI
67AQI
5th April 2025
70AQI
70AQI
6th April 2025
80AQI
80AQI
7th April 2025
80AQI
80AQI
8th April 2025
88AQI
88AQI
9th April 2025
78AQI
78AQI
10th April 2025
75AQI
75AQI
11th April 2025
69AQI
69AQI
12th April 2025
68AQI
68AQI
13th April 2025
128AQI
128AQI
14th April 2025
134AQI
134AQI
15th April 2025
134AQI
134AQI
16th April 2025
107AQI
107AQI
17th April 2025
93AQI
93AQI
18th April 2025
81AQI
81AQI
19th April 2025
73AQI
73AQI
20th April 2025
68AQI
68AQI
21st April 2025
63AQI
63AQI
22nd April 2025
67AQI
67AQI
23rd April 2025
60AQI
60AQI
24th April 2025
58AQI
58AQI
25th April 2025
65AQI
65AQI
26th April 2025
58AQI
58AQI
27th April 2025
70AQI
70AQI
28th April 2025
83AQI
83AQI
29th April 2025
70AQI
70AQI
30th April 2025
80AQI
80AQI
1st May 2025
76AQI
76AQI
2nd May 2025
85AQI
85AQI
3rd May 2025
90AQI
90AQI
4th May 2025
71AQI
71AQI
5th May 2025
66AQI
66AQI
6th May 2025
60AQI
60AQI
7th May 2025
60AQI
60AQI
8th May 2025
68AQI
68AQI
9th May 2025
60AQI
60AQI
10th May 2025
71AQI
71AQI
11th May 2025
63AQI
63AQI
12th May 2025
66AQI
66AQI
13th May 2025
70AQI
70AQI
14th May 2025
64AQI
64AQI
15th May 2025
59AQI
59AQI
16th May 2025
55AQI
55AQI
17th May 2025
50AQI
50AQI
18th May 2025
51AQI
51AQI
19th May 2025
53AQI
53AQI
20th May 2025
51AQI
51AQI
21st May 2025
54AQI
54AQI
22nd May 2025
48AQI
48AQI
23rd May 2025
52AQI
52AQI
24th May 2025
55AQI
55AQI
25th May 2025
74AQI
74AQI
26th May 2025
71AQI
71AQI
27th May 2025
77AQI
77AQI
28th May 2025
67AQI
67AQI
29th May 2025
65AQI
65AQI
30th May 2025
55AQI
55AQI
31st May 2025
67AQI
67AQI
1st June 2025
69AQI
69AQI
2nd June 2025
62AQI
62AQI
3rd June 2025
69AQI
69AQI
4th June 2025
55AQI
55AQI
5th June 2025
62AQI
62AQI
6th June 2025
60AQI
60AQI
7th June 2025
56AQI
56AQI
8th June 2025
53AQI
53AQI
9th June 2025
55AQI
55AQI
10th June 2025
48AQI
48AQI
11th June 2025
44AQI
44AQI
12th June 2025
47AQI
47AQI
13th June 2025
49AQI
49AQI
14th June 2025
51AQI
51AQI
15th June 2025
48AQI
48AQI
16th June 2025
51AQI
51AQI
17th June 2025
50AQI
50AQI
18th June 2025
50AQI
50AQI
19th June 2025
48AQI
48AQI
20th June 2025
44AQI
44AQI
21st June 2025
38AQI
38AQI
22nd June 2025
33AQI
33AQI
23rd June 2025
38AQI
38AQI
24th June 2025
39AQI
39AQI
25th June 2025
42AQI
42AQI
26th June 2025
41AQI
41AQI
27th June 2025
44AQI
44AQI
28th June 2025
42AQI
42AQI
29th June 2025
42AQI
42AQI
30th June 2025
38AQI
38AQI
1st July 2025
40AQI
40AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
45AQI
45AQI
4th July 2025
51AQI
51AQI
5th July 2025
54AQI
54AQI
6th July 2025
53AQI
53AQI
7th July 2025
58AQI
58AQI
8th July 2025
48AQI
48AQI
9th July 2025
54AQI
54AQI
10th July 2025
56AQI
56AQI
11th July 2025
56AQI
56AQI
12th July 2025
55AQI
55AQI
13th July 2025
55AQI
55AQI
14th July 2025
56AQI
56AQI
15th July 2025
55AQI
55AQI
16th July 2025
55AQI
55AQI
17th July 2025
60AQI
60AQI
18th July 2025
63AQI
63AQI
19th July 2025
68AQI
68AQI
20th July 2025
42AQI
42AQI
21st July 2025
56AQI
56AQI
22nd July 2025
55AQI
55AQI
23rd July 2025
54AQI
54AQI
24th July 2025
62AQI
62AQI
25th July 2025
66AQI
66AQI
26th July 2025
68AQI
68AQI
27th July 2025
61AQI
61AQI
28th July 2025
63AQI
63AQI
29th July 2025
59AQI
59AQI
30th July 2025
67AQI
67AQI
31st July 2025
57AQI
57AQI
1st August 2025
55AQI
55AQI
2nd August 2025
56AQI
56AQI
93AQI
79AQI
69AQI
78AQI
64AQI
49AQI
56AQI
56AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202569AQI
20
11
1
25
2
1
30
26
4
2
29
19
11
5
26
2
28
169
17
Highest AQI recorded in
January93AQI
Lowest AQI recorded in
June49AQI
202470AQI
17
14
1
28
1
22
8
2
27
1
31
28
1
29
2
4
27
2
26
2
31
3
27
16
15
70
255
40
Highest AQI recorded in
December99AQI
Lowest AQI recorded in
July30AQI
202374AQI
2
27
2
22
6
25
6
28
2
27
4
7
22
1
11
19
1
2
29
6
23
1
4
24
3
26
3
25
6
32
297
35
Highest AQI recorded in
December90AQI
Lowest AQI recorded in
July56AQI
202269AQI
2
19
10
7
13
1
6
18
7
1
28
1
9
22
16
14
14
8
1
1
18
9
1
30
3
27
2
24
5
62
221
34
Highest AQI recorded in
August141AQI
Lowest AQI recorded in
July49AQI
202173AQI
21
9
1
2
26
26
5
28
2
9
22
7
22
1
12
18
1
6
25
5
23
2
7
21
3
1
28
1
1
19
10
1
50
279
34
2
Highest AQI recorded in
January98AQI
Lowest AQI recorded in
July59AQI
202068AQI
12
1
1
20
2
16
25
5
24
7
18
11
2
1
25
4
30
1
1
23
6
16
15
72
165
29
Highest AQI recorded in
December99AQI
Lowest AQI recorded in
July44AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
74AQILeast Polluted Year Recorded
2020(Avg.)
68AQICauseway Bay's annual 2025 AQI (69) shows an average percentage change of -2.09% (improved AQI) compared to previous years: 2020 (68), 2021 (73), 2022 (69), 2023 (74), 2024 (70).
