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+
September Air Quality Analysis
Hong Kong Island, Hong Kong, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Sep 2022
127AQILowest AQI recorded on
5th Sep 2021
27AQISame Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 40 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Hong Kong Island, Hong Kong, China
AQI
Day
Night
.
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM17th Sep
57AQI
Avg. Lowest Time
9AM17th Sep
30AQI
In the last 24 hours,
Hong Kong Island's AQI reached its highest point of 57 at 12 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hong Kong Island, Hong Kong, China
AugSep
19th - 20th20th - 21st21st - 22nd22nd - 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
Day
Night
19th Aug 2025406 AMAQI
19th Aug 2025397 AMAQI
19th Aug 2025268 AMAQI
19th Aug 2025299 AMAQI
19th Aug 20253410 AMAQI
19th Aug 20253011 AMAQI
19th Aug 20253312 PMAQI
19th Aug 2025361 PMAQI
19th Aug 2025382 PMAQI
19th Aug 2025393 PMAQI
19th Aug 2025484 PMAQI
19th Aug 2025425 PMAQI
19th Aug 2025376 PMAQI
19th Aug 2025407 PMAQI
19th Aug 2025438 PMAQI
19th Aug 2025389 PMAQI
19th Aug 20254510 PMAQI
19th Aug 20254111 PMAQI
20th Aug 20254212 AMAQI
20th Aug 2025421 AMAQI
20th Aug 2025432 AMAQI
20th Aug 2025433 AMAQI
20th Aug 2025414 AMAQI
20th Aug 2025405 AMAQI
27°C27/28°C
20th Aug 2025406 AMAQI
20th Aug 2025427 AMAQI
20th Aug 2025368 AMAQI
20th Aug 2025349 AMAQI
20th Aug 20254610 AMAQI
20th Aug 20253611 AMAQI
20th Aug 20253612 PMAQI
20th Aug 2025351 PMAQI
20th Aug 2025302 PMAQI
20th Aug 2025353 PMAQI
20th Aug 2025314 PMAQI
20th Aug 2025365 PMAQI
20th Aug 2025346 PMAQI
20th Aug 2025377 PMAQI
20th Aug 2025428 PMAQI
20th Aug 2025439 PMAQI
20th Aug 20254010 PMAQI
20th Aug 20253811 PMAQI
21st Aug 20254212 AMAQI
21st Aug 2025421 AMAQI
21st Aug 2025442 AMAQI
21st Aug 2025423 AMAQI
21st Aug 2025404 AMAQI
21st Aug 2025395 AMAQI
28°C27/29°C
21st Aug 2025406 AMAQI
21st Aug 2025407 AMAQI
21st Aug 2025328 AMAQI
21st Aug 2025349 AMAQI
21st Aug 20253410 AMAQI
21st Aug 20254111 AMAQI
21st Aug 20254212 PMAQI
21st Aug 2025391 PMAQI
21st Aug 2025372 PMAQI
21st Aug 2025403 PMAQI
21st Aug 2025354 PMAQI
21st Aug 2025365 PMAQI
21st Aug 2025346 PMAQI
21st Aug 2025397 PMAQI
21st Aug 2025418 PMAQI
21st Aug 2025419 PMAQI
21st Aug 20253910 PMAQI
21st Aug 20253911 PMAQI
22nd Aug 20254212 AMAQI
22nd Aug 2025441 AMAQI
22nd Aug 2025422 AMAQI
22nd Aug 2025423 AMAQI
22nd Aug 2025414 AMAQI
22nd Aug 2025425 AMAQI
28°C27/29°C
22nd Aug 2025416 AMAQI
22nd Aug 2025417 AMAQI
22nd Aug 2025428 AMAQI
22nd Aug 2025379 AMAQI
22nd Aug 20253710 AMAQI
22nd Aug 20254011 AMAQI
22nd Aug 20253912 PMAQI
22nd Aug 2025361 PMAQI
22nd Aug 2025312 PMAQI
22nd Aug 2025353 PMAQI
22nd Aug 2025374 PMAQI
22nd Aug 2025485 PMAQI
22nd Aug 2025426 PMAQI
22nd Aug 2025417 PMAQI
22nd Aug 2025478 PMAQI
22nd Aug 2025479 PMAQI
22nd Aug 20254410 PMAQI
22nd Aug 20254511 PMAQI
23rd Aug 20254412 AMAQI
23rd Aug 2025431 AMAQI
23rd Aug 2025432 AMAQI
23rd Aug 2025423 AMAQI
23rd Aug 2025424 AMAQI
23rd Aug 2025425 AMAQI
29°C28/30°C
23rd Aug 2025426 AMAQI
23rd Aug 2025427 AMAQI
23rd Aug 2025538 AMAQI
23rd Aug 2025439 AMAQI
23rd Aug 20255210 AMAQI
23rd Aug 20256011 AMAQI
23rd Aug 20256012 PMAQI
23rd Aug 2025601 PMAQI
23rd Aug 2025522 PMAQI
23rd Aug 2025443 PMAQI
23rd Aug 2025444 PMAQI
23rd Aug 2025415 PMAQI
23rd Aug 2025376 PMAQI
23rd Aug 2025447 PMAQI
23rd Aug 2025478 PMAQI
23rd Aug 2025489 PMAQI
23rd Aug 20254810 PMAQI
23rd Aug 20254611 PMAQI
24th Aug 20254312 AMAQI
24th Aug 2025421 AMAQI
24th Aug 2025442 AMAQI
24th Aug 2025463 AMAQI
24th Aug 2025474 AMAQI
24th Aug 2025485 AMAQI
29°C28/30°C
24th Aug 2025486 AMAQI
24th Aug 2025487 AMAQI
24th Aug 2025378 AMAQI
24th Aug 2025369 AMAQI
24th Aug 20253810 AMAQI
24th Aug 20254411 AMAQI
24th Aug 20254212 PMAQI
24th Aug 2025411 PMAQI
24th Aug 2025312 PMAQI
24th Aug 2025373 PMAQI
24th Aug 2025354 PMAQI
24th Aug 2025365 PMAQI
24th Aug 2025376 PMAQI
24th Aug 2025427 PMAQI
24th Aug 2025488 PMAQI
24th Aug 2025479 PMAQI
24th Aug 20254610 PMAQI
24th Aug 20254511 PMAQI
25th Aug 20254512 AMAQI
25th Aug 2025451 AMAQI
25th Aug 2025452 AMAQI
25th Aug 2025453 AMAQI
25th Aug 2025434 AMAQI
25th Aug 2025445 AMAQI
28°C27/29°C
25th Aug 2025446 AMAQI
25th Aug 2025437 AMAQI
25th Aug 2025378 AMAQI
25th Aug 2025329 AMAQI
25th Aug 20253510 AMAQI
25th Aug 20253611 AMAQI
25th Aug 20253012 PMAQI
25th Aug 2025401 PMAQI
25th Aug 2025342 PMAQI
25th Aug 2025373 PMAQI
25th Aug 2025414 PMAQI
25th Aug 2025375 PMAQI
25th Aug 2025456 PMAQI
25th Aug 2025407 PMAQI
25th Aug 2025448 PMAQI
25th Aug 2025429 PMAQI
25th Aug 20253810 PMAQI
25th Aug 20253911 PMAQI
26th Aug 20254112 AMAQI
26th Aug 2025461 AMAQI
26th Aug 2025452 AMAQI
26th Aug 2025433 AMAQI
26th Aug 2025424 AMAQI
26th Aug 2025435 AMAQI
28°C28/29°C
26th Aug 2025456 AMAQI
26th Aug 2025457 AMAQI
26th Aug 2025348 AMAQI
26th Aug 2025409 AMAQI
26th Aug 20254210 AMAQI
26th Aug 20254211 AMAQI
26th Aug 20254412 PMAQI
26th Aug 2025391 PMAQI
26th Aug 2025442 PMAQI
26th Aug 2025403 PMAQI
26th Aug 2025414 PMAQI
26th Aug 2025425 PMAQI
26th Aug 2025406 PMAQI
26th Aug 2025527 PMAQI
26th Aug 2025498 PMAQI
26th Aug 2025529 PMAQI
26th Aug 20254810 PMAQI
26th Aug 20254711 PMAQI
27th Aug 20255112 AMAQI
27th Aug 2025451 AMAQI
27th Aug 2025442 AMAQI
27th Aug 2025443 AMAQI
27th Aug 2025434 AMAQI
27th Aug 2025435 AMAQI
28°C28/29°C
27th Aug 2025426 AMAQI
27th Aug 2025427 AMAQI
27th Aug 2025408 AMAQI
27th Aug 2025439 AMAQI
27th Aug 20255110 AMAQI
27th Aug 20254411 AMAQI
27th Aug 20254912 PMAQI
27th Aug 2025341 PMAQI
27th Aug 2025502 PMAQI
27th Aug 2025483 PMAQI
27th Aug 2025524 PMAQI
27th Aug 2025505 PMAQI
27th Aug 2025456 PMAQI
27th Aug 2025427 PMAQI
27th Aug 2025478 PMAQI
27th Aug 2025489 PMAQI
27th Aug 20254710 PMAQI
27th Aug 20254911 PMAQI
28th Aug 20254712 AMAQI
28th Aug 2025441 AMAQI
28th Aug 2025452 AMAQI
28th Aug 2025453 AMAQI
28th Aug 2025454 AMAQI
28th Aug 2025465 AMAQI
28°C27/29°C
28th Aug 2025476 AMAQI
28th Aug 2025457 AMAQI
28th Aug 2025508 AMAQI
28th Aug 2025539 AMAQI
28th Aug 20255610 AMAQI
28th Aug 20255211 AMAQI
28th Aug 20255212 PMAQI
28th Aug 2025511 PMAQI
28th Aug 2025552 PMAQI
28th Aug 2025563 PMAQI
28th Aug 2025544 PMAQI
28th Aug 2025555 PMAQI
28th Aug 2025556 PMAQI
28th Aug 2025537 PMAQI
28th Aug 2025518 PMAQI
28th Aug 2025499 PMAQI
28th Aug 20255010 PMAQI
28th Aug 20255111 PMAQI
29th Aug 20254412 AMAQI
29th Aug 2025491 AMAQI
29th Aug 2025482 AMAQI
29th Aug 2025503 AMAQI
29th Aug 2025504 AMAQI
29th Aug 2025505 AMAQI
28°C27/29°C
29th Aug 2025516 AMAQI
29th Aug 2025507 AMAQI
29th Aug 2025338 AMAQI
29th Aug 2025389 AMAQI
29th Aug 20254310 AMAQI
29th Aug 20254711 AMAQI
29th Aug 20254612 PMAQI
29th Aug 2025471 PMAQI
29th Aug 2025532 PMAQI
29th Aug 2025453 PMAQI
29th Aug 2025484 PMAQI
29th Aug 2025485 PMAQI
29th Aug 2025446 PMAQI
29th Aug 2025497 PMAQI
29th Aug 2025518 PMAQI
29th Aug 2025539 PMAQI
29th Aug 20255110 PMAQI
29th Aug 20255111 PMAQI
30th Aug 20254812 AMAQI
30th Aug 2025501 AMAQI
30th Aug 2025512 AMAQI
30th Aug 2025513 AMAQI
30th Aug 2025494 AMAQI
30th Aug 2025495 AMAQI
28°C28/30°C
30th Aug 2025476 AMAQI
30th Aug 2025497 AMAQI
30th Aug 2025478 AMAQI
30th Aug 2025489 AMAQI
30th Aug 20254810 AMAQI
30th Aug 20254611 AMAQI
30th Aug 20255012 PMAQI
30th Aug 2025381 PMAQI
30th Aug 2025412 PMAQI
30th Aug 2025393 PMAQI
30th Aug 2025384 PMAQI
30th Aug 2025395 PMAQI
30th Aug 2025396 PMAQI
30th Aug 2025497 PMAQI
30th Aug 2025478 PMAQI
30th Aug 2025489 PMAQI
30th Aug 20254310 PMAQI
30th Aug 20254311 PMAQI
31st Aug 20254212 AMAQI
31st Aug 2025501 AMAQI
31st Aug 2025522 AMAQI
31st Aug 2025483 AMAQI
31st Aug 2025464 AMAQI
31st Aug 2025505 AMAQI
28°C27/29°C
31st Aug 2025486 AMAQI
31st Aug 2025487 AMAQI
31st Aug 2025348 AMAQI
31st Aug 2025369 AMAQI
31st Aug 20253810 AMAQI
31st Aug 20253711 AMAQI
31st Aug 20254312 PMAQI
31st Aug 2025301 PMAQI
31st Aug 2025382 PMAQI
31st Aug 2025423 PMAQI
31st Aug 2025464 PMAQI
31st Aug 2025415 PMAQI
31st Aug 2025486 PMAQI
31st Aug 2025527 PMAQI
31st Aug 2025438 PMAQI
31st Aug 2025469 PMAQI
31st Aug 20254510 PMAQI
31st Aug 20254711 PMAQI
1st Sep 20254012 AMAQI
1st Sep 2025461 AMAQI
1st Sep 2025482 AMAQI
1st Sep 2025483 AMAQI
1st Sep 2025484 AMAQI
1st Sep 2025495 AMAQI
28°C28/29°C
1st Sep 2025496 AMAQI
1st Sep 2025497 AMAQI
1st Sep 2025318 AMAQI
1st Sep 2025349 AMAQI
1st Sep 20253510 AMAQI
1st Sep 20254111 AMAQI
1st Sep 20253612 PMAQI
1st Sep 2025411 PMAQI
1st Sep 2025302 PMAQI
1st Sep 2025393 PMAQI
1st Sep 2025344 PMAQI
1st Sep 2025415 PMAQI
1st Sep 2025396 PMAQI
1st Sep 2025427 PMAQI
1st Sep 2025468 PMAQI
1st Sep 2025439 PMAQI
1st Sep 20254810 PMAQI
1st Sep 20254911 PMAQI
2nd Sep 20254812 AMAQI
2nd Sep 2025491 AMAQI
2nd Sep 2025452 AMAQI
2nd Sep 2025473 AMAQI
2nd Sep 2025454 AMAQI
2nd Sep 2025455 AMAQI
28°C27/29°C
2nd Sep 2025466 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025338 AMAQI
2nd Sep 2025329 AMAQI
2nd Sep 20253510 AMAQI
2nd Sep 20253611 AMAQI
2nd Sep 20252812 PMAQI
2nd Sep 2025381 PMAQI
2nd Sep 2025392 PMAQI
2nd Sep 2025323 PMAQI
2nd Sep 2025374 PMAQI
2nd Sep 2025365 PMAQI
2nd Sep 2025326 PMAQI
2nd Sep 2025437 PMAQI
2nd Sep 2025478 PMAQI
2nd Sep 2025479 PMAQI
2nd Sep 20254610 PMAQI
2nd Sep 20255011 PMAQI
3rd Sep 20254812 AMAQI
3rd Sep 2025481 AMAQI
3rd Sep 2025502 AMAQI
3rd Sep 2025473 AMAQI
3rd Sep 2025464 AMAQI
3rd Sep 2025455 AMAQI
28°C28/29°C
3rd Sep 2025466 AMAQI
3rd Sep 2025447 AMAQI
3rd Sep 2025358 AMAQI
3rd Sep 2025359 AMAQI
3rd Sep 20253610 AMAQI
3rd Sep 20254711 AMAQI
3rd Sep 20254312 PMAQI
3rd Sep 2025401 PMAQI
3rd Sep 2025422 PMAQI
3rd Sep 2025333 PMAQI
3rd Sep 2025354 PMAQI
3rd Sep 2025325 PMAQI
3rd Sep 2025376 PMAQI
3rd Sep 2025397 PMAQI
3rd Sep 2025438 PMAQI
3rd Sep 2025479 PMAQI
3rd Sep 20254910 PMAQI
3rd Sep 20254211 PMAQI
4th Sep 20254412 AMAQI
4th Sep 2025491 AMAQI
4th Sep 2025482 AMAQI
4th Sep 2025473 AMAQI
4th Sep 2025454 AMAQI
4th Sep 2025455 AMAQI
29°C27/30°C
4th Sep 2025456 AMAQI
4th Sep 2025447 AMAQI
4th Sep 2025488 AMAQI
4th Sep 2025459 AMAQI
4th Sep 20254310 AMAQI
4th Sep 20254111 AMAQI
4th Sep 20253412 PMAQI
4th Sep 2025381 PMAQI
4th Sep 2025372 PMAQI
4th Sep 2025343 PMAQI
4th Sep 2025394 PMAQI
4th Sep 2025355 PMAQI
4th Sep 2025356 PMAQI
4th Sep 2025377 PMAQI
4th Sep 2025348 PMAQI
4th Sep 2025369 PMAQI
4th Sep 20253610 PMAQI
4th Sep 20253011 PMAQI
5th Sep 20253712 AMAQI
5th Sep 2025471 AMAQI
5th Sep 2025462 AMAQI
5th Sep 2025443 AMAQI
5th Sep 2025444 AMAQI
5th Sep 2025455 AMAQI
29°C28/30°C
5th Sep 2025446 AMAQI
5th Sep 2025437 AMAQI
5th Sep 2025348 AMAQI
5th Sep 2025389 AMAQI
5th Sep 20252910 AMAQI
5th Sep 20252611 AMAQI
5th Sep 20253412 PMAQI
5th Sep 2025331 PMAQI
5th Sep 2025352 PMAQI
5th Sep 2025323 PMAQI
5th Sep 2025304 PMAQI
5th Sep 2025335 PMAQI
5th Sep 2025346 PMAQI
5th Sep 2025387 PMAQI
5th Sep 2025428 PMAQI
5th Sep 2025449 PMAQI
5th Sep 20254910 PMAQI
5th Sep 20253711 PMAQI
6th Sep 20253612 AMAQI
6th Sep 2025391 AMAQI
6th Sep 2025422 AMAQI
6th Sep 2025383 AMAQI
6th Sep 2025414 AMAQI
6th Sep 2025395 AMAQI
29°C28/30°C
6th Sep 2025376 AMAQI
6th Sep 2025377 AMAQI
6th Sep 2025348 AMAQI
6th Sep 2025429 AMAQI
6th Sep 20254010 AMAQI
6th Sep 20254611 AMAQI
6th Sep 20255112 PMAQI
6th Sep 2025501 PMAQI
6th Sep 2025372 PMAQI
6th Sep 2025433 PMAQI
6th Sep 2025504 PMAQI
6th Sep 2025545 PMAQI
6th Sep 2025546 PMAQI
6th Sep 2025527 PMAQI
6th Sep 2025538 PMAQI
6th Sep 2025559 PMAQI
6th Sep 20255110 PMAQI
6th Sep 20254811 PMAQI
7th Sep 20255012 AMAQI
7th Sep 2025391 AMAQI
7th Sep 2025382 AMAQI
7th Sep 2025453 AMAQI
7th Sep 2025404 AMAQI
7th Sep 2025415 AMAQI
29°C29/30°C
7th Sep 2025426 AMAQI
7th Sep 2025417 AMAQI
7th Sep 2025398 AMAQI
7th Sep 2025519 AMAQI
7th Sep 20253510 AMAQI
7th Sep 20253611 AMAQI
7th Sep 20254112 PMAQI
7th Sep 2025461 PMAQI
7th Sep 2025402 PMAQI
7th Sep 2025453 PMAQI
7th Sep 2025414 PMAQI
7th Sep 2025415 PMAQI
7th Sep 2025476 PMAQI
7th Sep 2025467 PMAQI
7th Sep 2025468 PMAQI
7th Sep 2025399 PMAQI
7th Sep 20254210 PMAQI
7th Sep 20253511 PMAQI
8th Sep 20253912 AMAQI
8th Sep 2025411 AMAQI
8th Sep 2025412 AMAQI
8th Sep 2025403 AMAQI
8th Sep 2025404 AMAQI
8th Sep 2025405 AMAQI
28°C26/29°C
8th Sep 2025426 AMAQI
8th Sep 2025397 AMAQI
8th Sep 2025228 AMAQI
8th Sep 2025249 AMAQI
8th Sep 20252610 AMAQI
8th Sep 20252711 AMAQI
8th Sep 20252512 PMAQI
8th Sep 2025231 PMAQI
8th Sep 2025252 PMAQI
8th Sep 2025223 PMAQI
8th Sep 2025244 PMAQI
8th Sep 2025235 PMAQI
8th Sep 2025256 PMAQI
8th Sep 2025357 PMAQI
8th Sep 2025448 PMAQI
8th Sep 2025449 PMAQI
8th Sep 20255010 PMAQI
8th Sep 20254111 PMAQI
9th Sep 20253712 AMAQI
9th Sep 2025431 AMAQI
9th Sep 2025422 AMAQI
9th Sep 2025393 AMAQI
9th Sep 2025424 AMAQI
9th Sep 2025385 AMAQI
28°C27/28°C
9th Sep 2025386 AMAQI
9th Sep 2025407 AMAQI
9th Sep 2025328 AMAQI
9th Sep 2025319 AMAQI
9th Sep 20253410 AMAQI
9th Sep 20253411 AMAQI
9th Sep 20253512 PMAQI
9th Sep 2025341 PMAQI
9th Sep 2025332 PMAQI
9th Sep 2025303 PMAQI
9th Sep 2025394 PMAQI
9th Sep 2025375 PMAQI
9th Sep 2025366 PMAQI
9th Sep 2025427 PMAQI
9th Sep 2025468 PMAQI
9th Sep 2025409 PMAQI
9th Sep 20254110 PMAQI
9th Sep 20253911 PMAQI
10th Sep 20254012 AMAQI
10th Sep 2025421 AMAQI
10th Sep 2025422 AMAQI
10th Sep 2025423 AMAQI
10th Sep 2025384 AMAQI
10th Sep 2025405 AMAQI
28°C28/28°C
10th Sep 2025386 AMAQI
10th Sep 2025387 AMAQI
10th Sep 2025298 AMAQI
10th Sep 2025349 AMAQI
10th Sep 20253810 AMAQI
10th Sep 20253811 AMAQI
10th Sep 20253412 PMAQI
10th Sep 2025341 PMAQI
10th Sep 2025342 PMAQI
10th Sep 2025313 PMAQI
10th Sep 2025294 PMAQI
10th Sep 2025345 PMAQI
10th Sep 2025276 PMAQI
10th Sep 2025377 PMAQI
10th Sep 2025398 PMAQI
10th Sep 2025399 PMAQI
10th Sep 20253910 PMAQI
10th Sep 20253611 PMAQI
11th Sep 20254112 AMAQI
11th Sep 2025401 AMAQI
11th Sep 2025422 AMAQI
11th Sep 2025403 AMAQI
11th Sep 2025384 AMAQI
11th Sep 2025375 AMAQI
28°C28/29°C
11th Sep 2025386 AMAQI
11th Sep 2025387 AMAQI
11th Sep 2025338 AMAQI
11th Sep 2025339 AMAQI
11th Sep 20253510 AMAQI
11th Sep 20253511 AMAQI
11th Sep 20253812 PMAQI
11th Sep 2025351 PMAQI
11th Sep 2025372 PMAQI
11th Sep 2025333 PMAQI
11th Sep 2025314 PMAQI
11th Sep 2025335 PMAQI
11th Sep 2025366 PMAQI
11th Sep 2025377 PMAQI
11th Sep 2025408 PMAQI
11th Sep 2025389 PMAQI
11th Sep 20253710 PMAQI
11th Sep 20253611 PMAQI
12th Sep 20253612 AMAQI
12th Sep 2025411 AMAQI
12th Sep 2025412 AMAQI
12th Sep 2025403 AMAQI
12th Sep 2025404 AMAQI
12th Sep 2025405 AMAQI
28°C28/29°C
12th Sep 2025396 AMAQI
12th Sep 2025387 AMAQI
12th Sep 2025348 AMAQI
12th Sep 2025379 AMAQI
12th Sep 20254210 AMAQI
12th Sep 20254211 AMAQI
12th Sep 20254112 PMAQI
12th Sep 2025441 PMAQI
12th Sep 2025362 PMAQI
12th Sep 2025383 PMAQI
12th Sep 2025414 PMAQI
12th Sep 2025415 PMAQI
12th Sep 2025406 PMAQI
12th Sep 2025397 PMAQI
12th Sep 2025428 PMAQI
12th Sep 2025409 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253611 PMAQI
13th Sep 20253912 AMAQI
13th Sep 2025431 AMAQI
13th Sep 2025402 AMAQI
13th Sep 2025393 AMAQI
13th Sep 2025404 AMAQI
13th Sep 2025395 AMAQI
29°C28/30°C
13th Sep 2025406 AMAQI
13th Sep 2025397 AMAQI
13th Sep 2025298 AMAQI
13th Sep 2025329 AMAQI
13th Sep 20253110 AMAQI
13th Sep 20253411 AMAQI
13th Sep 20253612 PMAQI
13th Sep 2025371 PMAQI
13th Sep 2025382 PMAQI
13th Sep 2025353 PMAQI
13th Sep 2025314 PMAQI
13th Sep 2025305 PMAQI
13th Sep 2025396 PMAQI
13th Sep 2025457 PMAQI
13th Sep 2025428 PMAQI
13th Sep 2025409 PMAQI
13th Sep 20254310 PMAQI
13th Sep 20253711 PMAQI
14th Sep 20253912 AMAQI
14th Sep 2025401 AMAQI
14th Sep 2025412 AMAQI
14th Sep 2025383 AMAQI
14th Sep 2025374 AMAQI
14th Sep 2025375 AMAQI
29°C28/30°C
14th Sep 2025366 AMAQI
14th Sep 2025387 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025329 AMAQI
14th Sep 20253610 AMAQI
14th Sep 20253711 AMAQI
14th Sep 20253112 PMAQI
14th Sep 2025361 PMAQI
14th Sep 2025352 PMAQI
14th Sep 2025263 PMAQI
14th Sep 2025284 PMAQI
14th Sep 2025375 PMAQI
14th Sep 2025306 PMAQI
14th Sep 2025337 PMAQI
14th Sep 2025398 PMAQI
14th Sep 2025429 PMAQI
14th Sep 20253510 PMAQI
14th Sep 20253911 PMAQI
15th Sep 20253512 AMAQI
15th Sep 2025401 AMAQI
15th Sep 2025412 AMAQI
15th Sep 2025383 AMAQI
15th Sep 2025384 AMAQI
15th Sep 2025385 AMAQI
29°C28/29°C
15th Sep 2025396 AMAQI
15th Sep 2025397 AMAQI
15th Sep 2025318 AMAQI
15th Sep 2025349 AMAQI
15th Sep 20254510 AMAQI
15th Sep 20254311 AMAQI
15th Sep 20252512 PMAQI
15th Sep 2025311 PMAQI
15th Sep 2025352 PMAQI
15th Sep 2025423 PMAQI
15th Sep 2025374 PMAQI
15th Sep 2025375 PMAQI
15th Sep 2025276 PMAQI
15th Sep 2025347 PMAQI
15th Sep 2025358 PMAQI
15th Sep 2025399 PMAQI
15th Sep 20253710 PMAQI
15th Sep 20253611 PMAQI
16th Sep 20253412 AMAQI
16th Sep 2025401 AMAQI
16th Sep 2025382 AMAQI
16th Sep 2025393 AMAQI
16th Sep 2025384 AMAQI
16th Sep 2025385 AMAQI
29°C28/30°C
16th Sep 2025396 AMAQI
16th Sep 2025397 AMAQI
16th Sep 2025278 AMAQI
16th Sep 2025339 AMAQI
16th Sep 20253110 AMAQI
16th Sep 20254111 AMAQI
16th Sep 20254512 PMAQI
16th Sep 2025361 PMAQI
16th Sep 2025462 PMAQI
16th Sep 2025433 PMAQI
16th Sep 2025424 PMAQI
16th Sep 2025425 PMAQI
16th Sep 2025376 PMAQI
16th Sep 2025427 PMAQI
16th Sep 2025468 PMAQI
16th Sep 2025439 PMAQI
16th Sep 20255010 PMAQI
16th Sep 20255211 PMAQI
17th Sep 20254412 AMAQI
17th Sep 2025381 AMAQI
17th Sep 2025382 AMAQI
17th Sep 2025393 AMAQI
17th Sep 2025394 AMAQI
17th Sep 2025395 AMAQI
29°C28/30°C
17th Sep 2025386 AMAQI
17th Sep 2025397 AMAQI
17th Sep 2025348 AMAQI
17th Sep 2025309 AMAQI
17th Sep 20254710 AMAQI
17th Sep 20255111 AMAQI
17th Sep 20255712 PMAQI
17th Sep 2025481 PMAQI
17th Sep 2025522 PMAQI
17th Sep 2025513 PMAQI
17th Sep 2025514 PMAQI
17th Sep 2025405 PMAQI
17th Sep 2025386 PMAQI
17th Sep 2025427 PMAQI
17th Sep 2025478 PMAQI
17th Sep 2025489 PMAQI
17th Sep 20254310 PMAQI
17th Sep 20253811 PMAQI
18th Sep 20253712 AMAQI
18th Sep 2025391 AMAQI
--°C/°C
6 AM
12 PM
6 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 7 AM
42AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM
35AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 42), while the lowest AQI was between 8 AM to 8 AM (Avg. 35).
Night time
Avg. Highest Time
1 AM - 10 PM
43AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM
42AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 10 PM (Avg. 43), while the lowest AQI was between 12 AM to 12 AM (Avg. 42).
2025 Days Vs Air Quality
Hong Kong Island, Hong Kong, China
2025
36%
93
58%
151
6%
15
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Good
93 DaysModerate
151 DaysPoor
15 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 36%
Health Risk Level:
High
In 2025, 36% of 260 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
111AQI
111AQI
2nd January 2025
137AQI
137AQI
3rd January 2025
104AQI
104AQI
4th January 2025
106AQI
106AQI
5th January 2025
101AQI
101AQI
6th January 2025
103AQI
103AQI
7th January 2025
92AQI
92AQI
8th January 2025
102AQI
102AQI
9th January 2025
107AQI
107AQI
10th January 2025
85AQI
85AQI
11th January 2025
94AQI
94AQI
12th January 2025
70AQI
70AQI
13th January 2025
75AQI
75AQI
14th January 2025
70AQI
70AQI
15th January 2025
82AQI
82AQI
16th January 2025
111AQI
111AQI
17th January 2025
89AQI
89AQI
18th January 2025
100AQI
100AQI
19th January 2025
93AQI
93AQI
20th January 2025
92AQI
92AQI
21st January 2025
87AQI
87AQI
22nd January 2025
87AQI
87AQI
23rd January 2025
79AQI
79AQI
24th January 2025
70AQI
70AQI
25th January 2025
62AQI
62AQI
26th January 2025
55AQI
55AQI
27th January 2025
58AQI
58AQI
28th January 2025
59AQI
59AQI
29th January 2025
85AQI
85AQI
30th January 2025
63AQI
63AQI
31st January 2025
64AQI
64AQI
1st February 2025
53AQI
53AQI
2nd February 2025
59AQI
59AQI
3rd February 2025
42AQI
42AQI
4th February 2025
50AQI
50AQI
5th February 2025
76AQI
76AQI
6th February 2025
65AQI
65AQI
7th February 2025
63AQI
63AQI
8th February 2025
66AQI
66AQI
9th February 2025
59AQI
59AQI
10th February 2025
61AQI
61AQI
11th February 2025
60AQI
60AQI
12th February 2025
57AQI
57AQI
13th February 2025
85AQI
85AQI
14th February 2025
82AQI
82AQI
15th February 2025
82AQI
82AQI
16th February 2025
116AQI
116AQI
17th February 2025
89AQI
89AQI
18th February 2025
123AQI
123AQI
19th February 2025
75AQI
75AQI
20th February 2025
86AQI
86AQI
21st February 2025
81AQI
81AQI
22nd February 2025
72AQI
72AQI
23rd February 2025
56AQI
56AQI
24th February 2025
59AQI
59AQI
25th February 2025
83AQI
83AQI
26th February 2025
92AQI
92AQI
27th February 2025
78AQI
78AQI
28th February 2025
75AQI
75AQI
1st March 2025
74AQI
74AQI
2nd March 2025
67AQI
67AQI
3rd March 2025
63AQI
63AQI
4th March 2025
60AQI
60AQI
5th March 2025
51AQI
51AQI
6th March 2025
47AQI
47AQI
7th March 2025
55AQI
55AQI
8th March 2025
63AQI
63AQI
9th March 2025
64AQI
64AQI
10th March 2025
69AQI
69AQI
11th March 2025
69AQI
69AQI
12th March 2025
64AQI
64AQI
13th March 2025
72AQI
72AQI
14th March 2025
66AQI
66AQI
15th March 2025
58AQI
58AQI
16th March 2025
46AQI
46AQI
17th March 2025
73AQI
73AQI
18th March 2025
67AQI
67AQI
19th March 2025
74AQI
74AQI
20th March 2025
76AQI
76AQI
21st March 2025
79AQI
79AQI
22nd March 2025
75AQI
75AQI
23rd March 2025
77AQI
77AQI
24th March 2025
81AQI
81AQI
25th March 2025
76AQI
76AQI
26th March 2025
63AQI
63AQI
27th March 2025
63AQI
63AQI
28th March 2025
68AQI
68AQI
29th March 2025
50AQI
50AQI
30th March 2025
44AQI
44AQI
31st March 2025
44AQI
44AQI
1st April 2025
53AQI
53AQI
2nd April 2025
54AQI
54AQI
3rd April 2025
61AQI
61AQI
4th April 2025
63AQI
63AQI
5th April 2025
64AQI
64AQI
6th April 2025
74AQI
74AQI
7th April 2025
75AQI
75AQI
8th April 2025
83AQI
83AQI
9th April 2025
72AQI
72AQI
10th April 2025
71AQI
71AQI
11th April 2025
66AQI
66AQI
12th April 2025
62AQI
62AQI
13th April 2025
126AQI
126AQI
14th April 2025
132AQI
132AQI
15th April 2025
132AQI
132AQI
16th April 2025
104AQI
104AQI
17th April 2025
89AQI
89AQI
18th April 2025
76AQI
76AQI
19th April 2025
65AQI
65AQI
20th April 2025
61AQI
61AQI
21st April 2025
58AQI
58AQI
22nd April 2025
61AQI
61AQI
23rd April 2025
56AQI
56AQI
24th April 2025
52AQI
52AQI
25th April 2025
59AQI
59AQI
26th April 2025
54AQI
54AQI
27th April 2025
64AQI
64AQI
28th April 2025
73AQI
73AQI
29th April 2025
66AQI
66AQI
30th April 2025
75AQI
75AQI
1st May 2025
69AQI
69AQI
2nd May 2025
79AQI
79AQI
3rd May 2025
84AQI
84AQI
4th May 2025
67AQI
67AQI
5th May 2025
63AQI
63AQI
6th May 2025
57AQI
57AQI
7th May 2025
56AQI
56AQI
8th May 2025
64AQI
64AQI
9th May 2025
53AQI
53AQI
10th May 2025
64AQI
64AQI
11th May 2025
58AQI
58AQI
12th May 2025
62AQI
62AQI
13th May 2025
65AQI
65AQI
14th May 2025
59AQI
59AQI
15th May 2025
52AQI
52AQI
16th May 2025
46AQI
46AQI
17th May 2025
43AQI
43AQI
18th May 2025
44AQI
44AQI
19th May 2025
48AQI
48AQI
20th May 2025
42AQI
42AQI
21st May 2025
49AQI
49AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
47AQI
47AQI
24th May 2025
52AQI
52AQI
25th May 2025
69AQI
69AQI
26th May 2025
66AQI
66AQI
27th May 2025
72AQI
72AQI
28th May 2025
61AQI
61AQI
29th May 2025
61AQI
61AQI
30th May 2025
49AQI
49AQI
31st May 2025
63AQI
63AQI
1st June 2025
64AQI
64AQI
2nd June 2025
56AQI
56AQI
3rd June 2025
62AQI
62AQI
4th June 2025
47AQI
47AQI
5th June 2025
57AQI
57AQI
6th June 2025
56AQI
56AQI
7th June 2025
50AQI
50AQI
8th June 2025
45AQI
45AQI
9th June 2025
48AQI
48AQI
10th June 2025
40AQI
40AQI
11th June 2025
36AQI
36AQI
12th June 2025
38AQI
38AQI
13th June 2025
39AQI
39AQI
14th June 2025
45AQI
45AQI
15th June 2025
43AQI
43AQI
16th June 2025
45AQI
45AQI
17th June 2025
44AQI
44AQI
18th June 2025
43AQI
43AQI
19th June 2025
40AQI
40AQI
20th June 2025
37AQI
37AQI
21st June 2025
33AQI
33AQI
22nd June 2025
30AQI
30AQI
23rd June 2025
31AQI
31AQI
24th June 2025
31AQI
31AQI
25th June 2025
34AQI
34AQI
26th June 2025
32AQI
32AQI
27th June 2025
34AQI
34AQI
28th June 2025
33AQI
33AQI
29th June 2025
33AQI
33AQI
30th June 2025
32AQI
32AQI
1st July 2025
32AQI
32AQI
2nd July 2025
35AQI
35AQI
3rd July 2025
39AQI
39AQI
4th July 2025
47AQI
47AQI
5th July 2025
47AQI
47AQI
6th July 2025
48AQI
48AQI
7th July 2025
54AQI
54AQI
8th July 2025
42AQI
42AQI
9th July 2025
48AQI
48AQI
10th July 2025
50AQI
50AQI
11th July 2025
51AQI
51AQI
12th July 2025
51AQI
51AQI
13th July 2025
53AQI
53AQI
14th July 2025
52AQI
52AQI
15th July 2025
52AQI
52AQI
16th July 2025
51AQI
51AQI
17th July 2025
56AQI
56AQI
18th July 2025
58AQI
58AQI
19th July 2025
63AQI
63AQI
20th July 2025
40AQI
40AQI
21st July 2025
47AQI
47AQI
22nd July 2025
48AQI
48AQI
23rd July 2025
44AQI
44AQI
24th July 2025
55AQI
55AQI
25th July 2025
62AQI
62AQI
26th July 2025
63AQI
63AQI
27th July 2025
54AQI
54AQI
28th July 2025
60AQI
60AQI
29th July 2025
54AQI
54AQI
30th July 2025
61AQI
61AQI
31st July 2025
53AQI
53AQI
1st August 2025
55AQI
55AQI
2nd August 2025
53AQI
53AQI
3rd August 2025
54AQI
54AQI
4th August 2025
54AQI
54AQI
5th August 2025
49AQI
49AQI
6th August 2025
45AQI
45AQI
7th August 2025
52AQI
52AQI
8th August 2025
58AQI
58AQI
9th August 2025
56AQI
56AQI
10th August 2025
46AQI
46AQI
11th August 2025
48AQI
48AQI
12th August 2025
49AQI
49AQI
13th August 2025
52AQI
52AQI
14th August 2025
44AQI
44AQI
15th August 2025
38AQI
38AQI
16th August 2025
42AQI
42AQI
17th August 2025
38AQI
38AQI
18th August 2025
35AQI
35AQI
19th August 2025
39AQI
39AQI
20th August 2025
39AQI
39AQI
21st August 2025
39AQI
39AQI
22nd August 2025
41AQI
41AQI
23rd August 2025
46AQI
46AQI
24th August 2025
43AQI
43AQI
25th August 2025
40AQI
40AQI
26th August 2025
44AQI
44AQI
27th August 2025
46AQI
46AQI
28th August 2025
50AQI
50AQI
29th August 2025
48AQI
48AQI
30th August 2025
46AQI
46AQI
31st August 2025
45AQI
45AQI
1st September 2025
43AQI
43AQI
2nd September 2025
42AQI
42AQI
3rd September 2025
43AQI
43AQI
4th September 2025
40AQI
40AQI
5th September 2025
38AQI
38AQI
6th September 2025
45AQI
45AQI
7th September 2025
42AQI
42AQI
8th September 2025
35AQI
35AQI
9th September 2025
38AQI
38AQI
10th September 2025
37AQI
37AQI
11th September 2025
37AQI
37AQI
12th September 2025
39AQI
39AQI
13th September 2025
38AQI
38AQI
14th September 2025
36AQI
36AQI
15th September 2025
37AQI
37AQI
16th September 2025
40AQI
40AQI
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
87AQI
73AQI
64AQI
73AQI
58AQI
42AQI
51AQI
46AQI
39AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202560AQI
22
9
2
24
2
5
26
26
4
9
22
25
5
13
18
23
8
16
93
151
15
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
September39AQI
202460AQI
2
20
9
3
26
2
26
3
11
19
12
19
28
1
29
2
23
8
19
11
2
29
7
23
20
11
138
204
23
Highest AQI recorded in
December93AQI
Lowest AQI recorded in
July31AQI
202360AQI
2
28
1
3
23
2
4
24
3
2
28
6
23
2
25
5
26
5
26
5
23
7
7
24
4
25
4
24
3
132
221
11
Highest AQI recorded in
December77AQI
Lowest AQI recorded in
July40AQI
202259AQI
5
21
5
9
11
1
9
17
5
6
24
18
13
30
24
1
1
4
18
6
6
25
10
20
9
20
2
130
170
20
Highest AQI recorded in
August123AQI
Lowest AQI recorded in
June35AQI
202160AQI
23
7
1
2
26
3
26
2
4
25
1
22
9
23
6
1
25
6
24
7
17
13
11
20
3
27
2
22
7
136
210
18
1
Highest AQI recorded in
January89AQI
Lowest AQI recorded in
July42AQI
202054AQI
2
11
6
15
11
7
30
31
23
8
13
15
2
1
30
3
27
25
6
120
138
8
Highest AQI recorded in
December85AQI
Lowest AQI recorded in
July27AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2024(Avg.)
60AQILeast Polluted Year Recorded
2020(Avg.)
54AQIHong Kong Island's annual 2025 AQI (60) shows an average percentage change of 3.1% (worsened AQI) compared to previous years: 2020 (54), 2021 (60), 2022 (59), 2023 (60), 2024 (60).
