HistoryAQIPM2.5PM10COSO2NO2O3

Kuala Belait, Belait, Brunei 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

Kuala Belait, Belait, Brunei

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Sep 2025
49AQI
Lowest AQI recorded on
1st Sep 2021
0AQI

Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 35 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

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

Kuala Belait, Belait, Brunei

AQI
Day
Night
.

6 AM20th Sep 2025

6 PM

5 AM21st Sep 2025

Day time
Avg. Highest Time
9AM20th Sep

38AQI

Avg. Lowest Time
5PM20th Sep

30AQI

Night time
Avg. Highest Time
11PM20th Sep

52AQI

Avg. Lowest Time
7PM20th Sep

36AQI

In the last 24 hours,

Kuala Belait's AQI reached its highest point of 52 at 11 PM during the Night, while the lowest point, 30, was recorded at 5 PM during the Day between 20th Sep and 21st Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Kuala Belait, Belait, Brunei

AugSep
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 Aug 2025376 AMAQI
22nd Aug 2025387 AMAQI
22nd Aug 2025478 AMAQI
22nd Aug 2025349 AMAQI
22nd Aug 20253810 AMAQI
22nd Aug 20254411 AMAQI
22nd Aug 20253012 PMAQI
22nd Aug 2025401 PMAQI
22nd Aug 2025332 PMAQI
22nd Aug 2025313 PMAQI
22nd Aug 2025344 PMAQI
22nd Aug 2025385 PMAQI
22nd Aug 2025456 PMAQI
22nd Aug 2025437 PMAQI
22nd Aug 2025458 PMAQI
22nd Aug 2025469 PMAQI
22nd Aug 20254310 PMAQI
22nd Aug 20254311 PMAQI
23rd Aug 20254012 AMAQI
23rd Aug 2025421 AMAQI
23rd Aug 2025442 AMAQI
23rd Aug 2025413 AMAQI
23rd Aug 2025404 AMAQI
23rd Aug 2025415 AMAQI

25°C23/29°C

23rd Aug 2025406 AMAQI
23rd Aug 2025427 AMAQI
23rd Aug 2025378 AMAQI
23rd Aug 2025359 AMAQI
23rd Aug 20253610 AMAQI
23rd Aug 20253511 AMAQI
23rd Aug 20253812 PMAQI
23rd Aug 2025361 PMAQI
23rd Aug 2025342 PMAQI
23rd Aug 2025303 PMAQI
23rd Aug 2025364 PMAQI
23rd Aug 2025405 PMAQI
23rd Aug 2025376 PMAQI
23rd Aug 2025517 PMAQI
23rd Aug 2025478 PMAQI
23rd Aug 2025529 PMAQI
23rd Aug 20255610 PMAQI
23rd Aug 20255111 PMAQI
24th Aug 20254912 AMAQI
24th Aug 2025421 AMAQI
24th Aug 2025422 AMAQI
24th Aug 2025413 AMAQI
24th Aug 2025414 AMAQI
24th Aug 2025445 AMAQI

27°C24/30°C

24th Aug 2025426 AMAQI
24th Aug 2025417 AMAQI
24th Aug 2025408 AMAQI
24th Aug 2025379 AMAQI
24th Aug 20253210 AMAQI
24th Aug 20253811 AMAQI
24th Aug 20253712 PMAQI
24th Aug 2025421 PMAQI
24th Aug 2025522 PMAQI
24th Aug 2025443 PMAQI
24th Aug 2025404 PMAQI
24th Aug 2025445 PMAQI
24th Aug 2025476 PMAQI
24th Aug 2025547 PMAQI
24th Aug 2025548 PMAQI
24th Aug 2025549 PMAQI
24th Aug 20255410 PMAQI
24th Aug 20255011 PMAQI
25th Aug 20254712 AMAQI
25th Aug 2025431 AMAQI
25th Aug 2025442 AMAQI
25th Aug 2025443 AMAQI
25th Aug 2025434 AMAQI
25th Aug 2025435 AMAQI

27°C24/30°C

25th Aug 2025436 AMAQI
25th Aug 2025467 AMAQI
25th Aug 2025368 AMAQI
25th Aug 2025439 AMAQI
25th Aug 20254210 AMAQI
25th Aug 20254711 AMAQI
25th Aug 20254212 PMAQI
25th Aug 2025461 PMAQI
25th Aug 2025452 PMAQI
25th Aug 2025383 PMAQI
25th Aug 2025434 PMAQI
25th Aug 2025485 PMAQI
25th Aug 2025536 PMAQI
25th Aug 2025487 PMAQI
25th Aug 2025468 PMAQI
25th Aug 2025489 PMAQI
25th Aug 20255310 PMAQI
25th Aug 20254411 PMAQI
26th Aug 20254812 AMAQI
26th Aug 2025441 AMAQI
26th Aug 2025432 AMAQI
26th Aug 2025463 AMAQI
26th Aug 2025444 AMAQI
26th Aug 2025465 AMAQI

27°C25/30°C

26th Aug 2025446 AMAQI
26th Aug 2025467 AMAQI
26th Aug 2025388 AMAQI
26th Aug 2025439 AMAQI
26th Aug 20253910 AMAQI
26th Aug 20253311 AMAQI
26th Aug 20253912 PMAQI
26th Aug 2025381 PMAQI
26th Aug 2025332 PMAQI
26th Aug 2025303 PMAQI
26th Aug 2025334 PMAQI
26th Aug 2025295 PMAQI
26th Aug 2025396 PMAQI
26th Aug 2025497 PMAQI
26th Aug 2025488 PMAQI
26th Aug 2025469 PMAQI
26th Aug 20254910 PMAQI
26th Aug 20254411 PMAQI
27th Aug 20254512 AMAQI
27th Aug 2025471 AMAQI
27th Aug 2025482 AMAQI
27th Aug 2025463 AMAQI
27th Aug 2025434 AMAQI
27th Aug 2025435 AMAQI

27°C25/30°C

27th Aug 2025436 AMAQI
27th Aug 2025447 AMAQI
27th Aug 2025488 AMAQI
27th Aug 2025429 AMAQI
27th Aug 20253810 AMAQI
27th Aug 20254011 AMAQI
27th Aug 20254212 PMAQI
27th Aug 2025401 PMAQI
27th Aug 2025482 PMAQI
27th Aug 2025503 PMAQI
27th Aug 2025494 PMAQI
27th Aug 2025525 PMAQI
27th Aug 2025566 PMAQI
27th Aug 2025557 PMAQI
27th Aug 2025558 PMAQI
27th Aug 2025539 PMAQI
27th Aug 20255010 PMAQI
27th Aug 20255111 PMAQI
28th Aug 20254612 AMAQI
28th Aug 2025471 AMAQI
28th Aug 2025472 AMAQI
28th Aug 2025463 AMAQI
28th Aug 2025464 AMAQI
28th Aug 2025465 AMAQI

27°C25/30°C

28th Aug 2025476 AMAQI
28th Aug 2025457 AMAQI
28th Aug 2025478 AMAQI
28th Aug 2025519 AMAQI
28th Aug 20255510 AMAQI
28th Aug 20254911 AMAQI
28th Aug 20254812 PMAQI
28th Aug 2025451 PMAQI
28th Aug 2025502 PMAQI
28th Aug 2025543 PMAQI
28th Aug 2025584 PMAQI
28th Aug 2025555 PMAQI
28th Aug 2025526 PMAQI
28th Aug 2025497 PMAQI
28th Aug 2025478 PMAQI
28th Aug 2025519 PMAQI
28th Aug 20254610 PMAQI
28th Aug 20254311 PMAQI
29th Aug 20254512 AMAQI
29th Aug 2025471 AMAQI
29th Aug 2025492 AMAQI
29th Aug 2025483 AMAQI
29th Aug 2025494 AMAQI
29th Aug 2025505 AMAQI

27°C25/31°C

29th Aug 2025496 AMAQI
29th Aug 2025507 AMAQI
29th Aug 2025348 AMAQI
29th Aug 2025469 AMAQI
29th Aug 20255210 AMAQI
29th Aug 20255311 AMAQI
29th Aug 20255712 PMAQI
29th Aug 2025481 PMAQI
29th Aug 2025542 PMAQI
29th Aug 2025523 PMAQI
29th Aug 2025514 PMAQI
29th Aug 2025495 PMAQI
29th Aug 2025446 PMAQI
29th Aug 2025487 PMAQI
29th Aug 2025508 PMAQI
29th Aug 2025529 PMAQI
29th Aug 20255010 PMAQI
29th Aug 20255211 PMAQI
30th Aug 20254912 AMAQI
30th Aug 2025481 AMAQI
30th Aug 2025482 AMAQI
30th Aug 2025503 AMAQI
30th Aug 2025494 AMAQI
30th Aug 2025525 AMAQI

27°C25/30°C

30th Aug 2025496 AMAQI
30th Aug 2025507 AMAQI
30th Aug 2025468 AMAQI
30th Aug 2025519 AMAQI
30th Aug 20254810 AMAQI
30th Aug 20254911 AMAQI
30th Aug 20255212 PMAQI
30th Aug 2025421 PMAQI
30th Aug 2025512 PMAQI
30th Aug 2025503 PMAQI
30th Aug 2025484 PMAQI
30th Aug 2025485 PMAQI
30th Aug 2025546 PMAQI
30th Aug 2025517 PMAQI
30th Aug 2025538 PMAQI
30th Aug 2025569 PMAQI
30th Aug 20255710 PMAQI
30th Aug 20255411 PMAQI
31st Aug 20255212 AMAQI
31st Aug 2025511 AMAQI
31st Aug 2025522 AMAQI
31st Aug 2025513 AMAQI
31st Aug 2025504 AMAQI
31st Aug 2025525 AMAQI

27°C25/31°C

31st Aug 2025506 AMAQI
31st Aug 2025517 AMAQI
31st Aug 2025368 AMAQI
31st Aug 2025469 AMAQI
31st Aug 20254710 AMAQI
31st Aug 20254811 AMAQI
31st Aug 20255012 PMAQI
31st Aug 2025541 PMAQI
31st Aug 2025522 PMAQI
31st Aug 2025523 PMAQI
31st Aug 2025514 PMAQI
31st Aug 2025585 PMAQI
31st Aug 2025606 PMAQI
31st Aug 2025647 PMAQI
31st Aug 2025568 PMAQI
31st Aug 2025499 PMAQI
31st Aug 20255210 PMAQI
31st Aug 20255011 PMAQI
1st Sep 20254912 AMAQI
1st Sep 2025521 AMAQI
1st Sep 2025512 AMAQI
1st Sep 2025523 AMAQI
1st Sep 2025514 AMAQI
1st Sep 2025515 AMAQI

27°C25/30°C

1st Sep 2025516 AMAQI
1st Sep 2025527 AMAQI
1st Sep 2025348 AMAQI
1st Sep 2025349 AMAQI
1st Sep 20254410 AMAQI
1st Sep 20254611 AMAQI
1st Sep 20254512 PMAQI
1st Sep 2025401 PMAQI
1st Sep 2025462 PMAQI
1st Sep 2025433 PMAQI
1st Sep 2025524 PMAQI
1st Sep 2025505 PMAQI
1st Sep 2025496 PMAQI
1st Sep 2025527 PMAQI
1st Sep 2025538 PMAQI
1st Sep 2025539 PMAQI
1st Sep 20255610 PMAQI
1st Sep 20255011 PMAQI
2nd Sep 20255212 AMAQI
2nd Sep 2025491 AMAQI
2nd Sep 2025502 AMAQI
2nd Sep 2025483 AMAQI
2nd Sep 2025484 AMAQI
2nd Sep 2025485 AMAQI

27°C25/30°C

2nd Sep 2025466 AMAQI
2nd Sep 2025507 AMAQI
2nd Sep 2025338 AMAQI
2nd Sep 2025429 AMAQI
2nd Sep 20253610 AMAQI
2nd Sep 20253411 AMAQI
2nd Sep 20253212 PMAQI
2nd Sep 2025401 PMAQI
2nd Sep 2025362 PMAQI
2nd Sep 2025383 PMAQI
2nd Sep 2025374 PMAQI
2nd Sep 2025355 PMAQI
2nd Sep 2025366 PMAQI
2nd Sep 2025367 PMAQI
2nd Sep 2025458 PMAQI
2nd Sep 2025499 PMAQI
2nd Sep 20255410 PMAQI
2nd Sep 20255211 PMAQI
3rd Sep 20254712 AMAQI
3rd Sep 2025481 AMAQI
3rd Sep 2025502 AMAQI
3rd Sep 2025463 AMAQI
3rd Sep 2025434 AMAQI
3rd Sep 2025445 AMAQI

27°C25/30°C

3rd Sep 2025456 AMAQI
3rd Sep 2025457 AMAQI
3rd Sep 2025328 AMAQI
3rd Sep 2025409 AMAQI
3rd Sep 20254210 AMAQI
3rd Sep 20254411 AMAQI
3rd Sep 20254112 PMAQI
3rd Sep 2025421 PMAQI
3rd Sep 2025322 PMAQI
3rd Sep 2025323 PMAQI
3rd Sep 2025284 PMAQI
3rd Sep 2025355 PMAQI
3rd Sep 2025306 PMAQI
3rd Sep 2025417 PMAQI
3rd Sep 2025448 PMAQI
3rd Sep 2025459 PMAQI
3rd Sep 20253610 PMAQI
3rd Sep 20253511 PMAQI
4th Sep 20254412 AMAQI
4th Sep 2025481 AMAQI
4th Sep 2025472 AMAQI
4th Sep 2025453 AMAQI
4th Sep 2025444 AMAQI
4th Sep 2025445 AMAQI

28°C25/31°C

4th Sep 2025446 AMAQI
4th Sep 2025447 AMAQI
4th Sep 2025248 AMAQI
4th Sep 2025289 AMAQI
4th Sep 20253210 AMAQI
4th Sep 20253811 AMAQI
4th Sep 20253312 PMAQI
4th Sep 2025311 PMAQI
4th Sep 2025322 PMAQI
4th Sep 2025303 PMAQI
4th Sep 2025484 PMAQI
4th Sep 2025545 PMAQI
4th Sep 2025506 PMAQI
4th Sep 2025527 PMAQI
4th Sep 2025528 PMAQI
4th Sep 2025419 PMAQI
4th Sep 20253910 PMAQI
4th Sep 20254011 PMAQI
5th Sep 20254412 AMAQI
5th Sep 2025451 AMAQI
5th Sep 2025462 AMAQI
5th Sep 2025443 AMAQI
5th Sep 2025384 AMAQI
5th Sep 2025415 AMAQI

27°C25/30°C

5th Sep 2025416 AMAQI
5th Sep 2025397 AMAQI
5th Sep 2025188 AMAQI
5th Sep 2025189 AMAQI
5th Sep 20253110 AMAQI
5th Sep 20252811 AMAQI
5th Sep 20253412 PMAQI
5th Sep 2025351 PMAQI
5th Sep 2025362 PMAQI
5th Sep 2025303 PMAQI
5th Sep 2025324 PMAQI
5th Sep 2025305 PMAQI
5th Sep 2025306 PMAQI
5th Sep 2025377 PMAQI
5th Sep 2025378 PMAQI
5th Sep 2025409 PMAQI
5th Sep 20253010 PMAQI
5th Sep 20252711 PMAQI
6th Sep 20252812 AMAQI
6th Sep 2025311 AMAQI
6th Sep 2025282 AMAQI
6th Sep 2025303 AMAQI
6th Sep 2025324 AMAQI
6th Sep 2025345 AMAQI

25°C23/29°C

6th Sep 2025326 AMAQI
6th Sep 2025327 AMAQI
6th Sep 2025178 AMAQI
6th Sep 2025209 AMAQI
6th Sep 20252810 AMAQI
6th Sep 20253411 AMAQI
6th Sep 20253612 PMAQI
6th Sep 2025381 PMAQI
6th Sep 2025402 PMAQI
6th Sep 2025383 PMAQI
6th Sep 2025364 PMAQI
6th Sep 2025345 PMAQI
6th Sep 2025286 PMAQI
6th Sep 2025337 PMAQI
6th Sep 2025298 PMAQI
6th Sep 2025309 PMAQI
6th Sep 20253310 PMAQI
6th Sep 20253011 PMAQI
7th Sep 20253212 AMAQI
7th Sep 2025311 AMAQI
7th Sep 2025342 AMAQI
7th Sep 2025333 AMAQI
7th Sep 2025334 AMAQI
7th Sep 2025325 AMAQI

27°C24/30°C

7th Sep 2025346 AMAQI
7th Sep 2025337 AMAQI
7th Sep 2025278 AMAQI
7th Sep 2025219 AMAQI
7th Sep 20252910 AMAQI
7th Sep 20252811 AMAQI
7th Sep 20252212 PMAQI
7th Sep 2025341 PMAQI
7th Sep 2025282 PMAQI
7th Sep 2025303 PMAQI
7th Sep 2025304 PMAQI
7th Sep 2025295 PMAQI
7th Sep 2025306 PMAQI
7th Sep 2025307 PMAQI
7th Sep 2025338 PMAQI
7th Sep 2025309 PMAQI
7th Sep 20253210 PMAQI
7th Sep 20253211 PMAQI
8th Sep 20252912 AMAQI
8th Sep 2025321 AMAQI
8th Sep 2025302 AMAQI
8th Sep 2025313 AMAQI
8th Sep 2025304 AMAQI
8th Sep 2025325 AMAQI

26°C24/29°C

8th Sep 2025326 AMAQI
8th Sep 2025327 AMAQI
8th Sep 2025208 AMAQI
8th Sep 2025329 AMAQI
8th Sep 20252710 AMAQI
8th Sep 20252811 AMAQI
8th Sep 20252412 PMAQI
8th Sep 2025261 PMAQI
8th Sep 2025262 PMAQI
8th Sep 2025243 PMAQI
8th Sep 2025244 PMAQI
8th Sep 2025275 PMAQI
8th Sep 2025306 PMAQI
8th Sep 2025327 PMAQI
8th Sep 2025328 PMAQI
8th Sep 2025329 PMAQI
8th Sep 20253010 PMAQI
8th Sep 20253011 PMAQI
9th Sep 20252912 AMAQI
9th Sep 2025341 AMAQI
9th Sep 2025322 AMAQI
9th Sep 2025323 AMAQI
9th Sep 2025324 AMAQI
9th Sep 2025335 AMAQI

27°C24/30°C

9th Sep 2025316 AMAQI
9th Sep 2025327 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025329 AMAQI
9th Sep 20252710 AMAQI
9th Sep 20252211 AMAQI
9th Sep 20252412 PMAQI
9th Sep 2025271 PMAQI
9th Sep 2025262 PMAQI
9th Sep 2025253 PMAQI
9th Sep 2025294 PMAQI
9th Sep 2025305 PMAQI
9th Sep 2025316 PMAQI
9th Sep 2025347 PMAQI
9th Sep 2025428 PMAQI
9th Sep 2025339 PMAQI
9th Sep 20253110 PMAQI
9th Sep 20253311 PMAQI
10th Sep 20253212 AMAQI
10th Sep 2025331 AMAQI
10th Sep 2025372 AMAQI
10th Sep 2025323 AMAQI
10th Sep 2025334 AMAQI
10th Sep 2025315 AMAQI

27°C24/30°C

10th Sep 2025336 AMAQI
10th Sep 2025327 AMAQI
10th Sep 2025168 AMAQI
10th Sep 2025229 AMAQI
10th Sep 20253710 AMAQI
10th Sep 20253211 AMAQI
10th Sep 20253012 PMAQI
10th Sep 2025261 PMAQI
10th Sep 2025272 PMAQI
10th Sep 2025303 PMAQI
10th Sep 2025284 PMAQI
10th Sep 2025315 PMAQI
10th Sep 2025276 PMAQI
10th Sep 2025327 PMAQI
10th Sep 2025328 PMAQI
10th Sep 2025309 PMAQI
10th Sep 20253010 PMAQI
10th Sep 20252711 PMAQI
11th Sep 20253112 AMAQI
11th Sep 2025321 AMAQI
11th Sep 2025302 AMAQI
11th Sep 2025313 AMAQI
11th Sep 2025324 AMAQI
11th Sep 2025325 AMAQI

26°C24/29°C

11th Sep 2025326 AMAQI
11th Sep 2025327 AMAQI
11th Sep 2025228 AMAQI
11th Sep 2025249 AMAQI
11th Sep 20252710 AMAQI
11th Sep 20252711 AMAQI
11th Sep 20252212 PMAQI
11th Sep 2025281 PMAQI
11th Sep 2025272 PMAQI
11th Sep 2025253 PMAQI
11th Sep 2025274 PMAQI
11th Sep 2025245 PMAQI
11th Sep 2025286 PMAQI
11th Sep 2025327 PMAQI
11th Sep 2025318 PMAQI
11th Sep 2025319 PMAQI
11th Sep 20252810 PMAQI
11th Sep 20252611 PMAQI
12th Sep 20253112 AMAQI
12th Sep 2025361 AMAQI
12th Sep 2025342 AMAQI
12th Sep 2025333 AMAQI
12th Sep 2025324 AMAQI
12th Sep 2025325 AMAQI

26°C24/28°C

12th Sep 2025316 AMAQI
12th Sep 2025327 AMAQI
12th Sep 2025248 AMAQI
12th Sep 2025229 AMAQI
12th Sep 20252410 AMAQI
12th Sep 20252711 AMAQI
12th Sep 20252612 PMAQI
12th Sep 2025281 PMAQI
12th Sep 2025222 PMAQI
12th Sep 2025273 PMAQI
12th Sep 2025304 PMAQI
12th Sep 2025265 PMAQI
12th Sep 2025366 PMAQI
12th Sep 2025357 PMAQI
12th Sep 2025348 PMAQI
12th Sep 2025329 PMAQI
12th Sep 20253610 PMAQI
12th Sep 20253211 PMAQI
13th Sep 20253212 AMAQI
13th Sep 2025331 AMAQI
13th Sep 2025352 AMAQI
13th Sep 2025333 AMAQI
13th Sep 2025324 AMAQI
13th Sep 2025325 AMAQI

26°C24/28°C

13th Sep 2025336 AMAQI
13th Sep 2025327 AMAQI
13th Sep 2025168 AMAQI
13th Sep 2025139 AMAQI
13th Sep 20252410 AMAQI
13th Sep 20252311 AMAQI
13th Sep 20252412 PMAQI
13th Sep 2025211 PMAQI
13th Sep 2025242 PMAQI
13th Sep 2025283 PMAQI
13th Sep 2025244 PMAQI
13th Sep 2025215 PMAQI
13th Sep 2025246 PMAQI
13th Sep 2025297 PMAQI
13th Sep 2025318 PMAQI
13th Sep 2025299 PMAQI
13th Sep 20252610 PMAQI
13th Sep 20253011 PMAQI
14th Sep 20252912 AMAQI
14th Sep 2025341 AMAQI
14th Sep 2025322 AMAQI
14th Sep 2025323 AMAQI
14th Sep 2025324 AMAQI
14th Sep 2025315 AMAQI

26°C25/28°C

14th Sep 2025306 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025248 AMAQI
14th Sep 2025179 AMAQI
14th Sep 20252010 AMAQI
14th Sep 20252211 AMAQI
14th Sep 20252112 PMAQI
14th Sep 2025221 PMAQI
14th Sep 2025222 PMAQI
14th Sep 2025203 PMAQI
14th Sep 2025264 PMAQI
14th Sep 2025265 PMAQI
14th Sep 2025256 PMAQI
14th Sep 2025297 PMAQI
14th Sep 2025288 PMAQI
14th Sep 2025349 PMAQI
14th Sep 20253010 PMAQI
14th Sep 20253211 PMAQI
15th Sep 20253212 AMAQI
15th Sep 2025301 AMAQI
15th Sep 2025322 AMAQI
15th Sep 2025303 AMAQI
15th Sep 2025284 AMAQI
15th Sep 2025295 AMAQI

26°C24/28°C

15th Sep 2025296 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025158 AMAQI
15th Sep 2025249 AMAQI
15th Sep 20253010 AMAQI
15th Sep 20253511 AMAQI
15th Sep 20252512 PMAQI
15th Sep 2025231 PMAQI
15th Sep 2025272 PMAQI
15th Sep 2025283 PMAQI
15th Sep 2025284 PMAQI
15th Sep 2025205 PMAQI
15th Sep 2025266 PMAQI
15th Sep 2025287 PMAQI
15th Sep 2025298 PMAQI
15th Sep 2025329 PMAQI
15th Sep 20253310 PMAQI
15th Sep 20253411 PMAQI
16th Sep 20253612 AMAQI
16th Sep 2025301 AMAQI
16th Sep 2025322 AMAQI
16th Sep 2025313 AMAQI
16th Sep 2025304 AMAQI
16th Sep 2025315 AMAQI

25°C24/27°C

16th Sep 2025326 AMAQI
16th Sep 2025307 AMAQI
16th Sep 2025268 AMAQI
16th Sep 2025329 AMAQI
16th Sep 20253310 AMAQI
16th Sep 20252511 AMAQI
16th Sep 20252412 PMAQI
16th Sep 2025291 PMAQI
16th Sep 2025272 PMAQI
16th Sep 2025253 PMAQI
16th Sep 2025304 PMAQI
16th Sep 2025265 PMAQI
16th Sep 2025246 PMAQI
16th Sep 2025307 PMAQI
16th Sep 2025318 PMAQI
16th Sep 2025329 PMAQI
16th Sep 20252810 PMAQI
16th Sep 20253211 PMAQI
17th Sep 20253112 AMAQI
17th Sep 2025321 AMAQI
17th Sep 2025332 AMAQI
17th Sep 2025323 AMAQI
17th Sep 2025314 AMAQI
17th Sep 2025315 AMAQI

26°C24/29°C

17th Sep 2025326 AMAQI
17th Sep 2025317 AMAQI
17th Sep 2025278 AMAQI
17th Sep 2025269 AMAQI
17th Sep 20253010 AMAQI
17th Sep 20252811 AMAQI
17th Sep 20252612 PMAQI
17th Sep 2025321 PMAQI
17th Sep 2025322 PMAQI
17th Sep 2025303 PMAQI
17th Sep 2025304 PMAQI
17th Sep 2025305 PMAQI
17th Sep 2025386 PMAQI
17th Sep 2025337 PMAQI
17th Sep 2025338 PMAQI
17th Sep 2025349 PMAQI
17th Sep 20254410 PMAQI
17th Sep 20254711 PMAQI
18th Sep 20254212 AMAQI
18th Sep 2025341 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025333 AMAQI
18th Sep 2025324 AMAQI
18th Sep 2025335 AMAQI

25°C23/29°C

18th Sep 2025326 AMAQI
18th Sep 2025327 AMAQI
18th Sep 2025388 AMAQI
18th Sep 2025419 AMAQI
18th Sep 20253710 AMAQI
18th Sep 20253211 AMAQI
18th Sep 20253012 PMAQI
18th Sep 2025301 PMAQI
18th Sep 2025322 PMAQI
18th Sep 2025303 PMAQI
18th Sep 2025314 PMAQI
18th Sep 2025325 PMAQI
18th Sep 2025326 PMAQI
18th Sep 2025347 PMAQI
18th Sep 2025378 PMAQI
18th Sep 2025379 PMAQI
18th Sep 20254610 PMAQI
18th Sep 20254911 PMAQI
19th Sep 20254412 AMAQI
19th Sep 2025361 AMAQI
19th Sep 2025332 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025354 AMAQI
19th Sep 2025345 AMAQI

27°C24/30°C

19th Sep 2025366 AMAQI
19th Sep 2025367 AMAQI
19th Sep 2025438 AMAQI
19th Sep 2025469 AMAQI
19th Sep 20253710 AMAQI
19th Sep 20253211 AMAQI
19th Sep 20253012 PMAQI
19th Sep 2025321 PMAQI
19th Sep 2025352 PMAQI
19th Sep 2025333 PMAQI
19th Sep 2025304 PMAQI
19th Sep 2025335 PMAQI
19th Sep 2025266 PMAQI
19th Sep 2025327 PMAQI
19th Sep 2025348 PMAQI
19th Sep 2025339 PMAQI
19th Sep 20253810 PMAQI
19th Sep 20254111 PMAQI
20th Sep 20253912 AMAQI
20th Sep 2025381 AMAQI
20th Sep 2025372 AMAQI
20th Sep 2025363 AMAQI
20th Sep 2025384 AMAQI
20th Sep 2025375 AMAQI

28°C26/30°C

20th Sep 2025376 AMAQI
20th Sep 2025377 AMAQI
20th Sep 2025348 AMAQI
20th Sep 2025389 AMAQI
20th Sep 20253510 AMAQI
20th Sep 20253611 AMAQI
20th Sep 20253412 PMAQI
20th Sep 2025351 PMAQI
20th Sep 2025352 PMAQI
20th Sep 2025373 PMAQI
20th Sep 2025364 PMAQI
20th Sep 2025305 PMAQI
20th Sep 2025326 PMAQI
20th Sep 2025367 PMAQI
20th Sep 2025388 PMAQI
20th Sep 2025389 PMAQI
20th Sep 20254910 PMAQI
20th Sep 20255211 PMAQI
21st Sep 20255012 AMAQI
21st Sep 2025381 AMAQI
21st Sep 2025382 AMAQI
21st Sep 2025383 AMAQI
21st Sep 2025384 AMAQI
21st Sep 2025385 AMAQI

27°C24/30°C

21st Sep 2025396 AMAQI
6 AM
21st Sep 2025397 AMAQI
21st Sep 2025268 AMAQI
21st Sep 2025289 AMAQI
21st Sep 20253110 AMAQI
21st Sep 20253211 AMAQI
21st Sep 20253112 PMAQI
12 PM
21st Sep 2025321 PMAQI
21st Sep 2025322 PMAQI
21st Sep 2025323 PMAQI
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 AM

39AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM

31AQI

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. 39), while the lowest AQI was between 8 AM to 8 AM (Avg. 31).
Night time
Avg. Highest Time
12 AM - 11 PM

40AQI

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

40AQI

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. 40), while the lowest AQI was between 12 AM to 11 PM (Avg. 40).

2025 Days Vs Air Quality

Kuala Belait, Belait, Brunei

2025

52%

136

48%

126

Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)

Good
136 Days
Moderate
126 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 52%

Health Risk Level:

Considerable

In 2025, 52% of 264 days were within WHO’s safe air quality limits, and 48% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.

Annual Air Quality Insights

Kuala Belait, Belait, Brunei

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
56AQI
2nd January 2025
56AQI
3rd January 2025
56AQI
4th January 2025
58AQI
5th January 2025
57AQI
6th January 2025
57AQI
7th January 2025
57AQI
8th January 2025
56AQI
9th January 2025
58AQI
10th January 2025
56AQI
11th January 2025
56AQI
12th January 2025
55AQI
13th January 2025
55AQI
14th January 2025
56AQI
15th January 2025
55AQI
16th January 2025
55AQI
17th January 2025
55AQI
18th January 2025
56AQI
19th January 2025
56AQI
20th January 2025
56AQI
21st January 2025
56AQI
22nd January 2025
56AQI
23rd January 2025
56AQI
24th January 2025
56AQI
25th January 2025
55AQI
26th January 2025
55AQI
27th January 2025
54AQI
28th January 2025
54AQI
29th January 2025
54AQI
30th January 2025
54AQI
31st January 2025
54AQI
1st February 2025
53AQI
2nd February 2025
54AQI
3rd February 2025
54AQI
4th February 2025
53AQI
5th February 2025
53AQI
6th February 2025
55AQI
7th February 2025
54AQI
8th February 2025
54AQI
9th February 2025
54AQI
10th February 2025
54AQI
11th February 2025
54AQI
12th February 2025
54AQI
13th February 2025
55AQI
14th February 2025
55AQI
15th February 2025
56AQI
16th February 2025
56AQI
17th February 2025
59AQI
18th February 2025
59AQI
19th February 2025
60AQI
20th February 2025
60AQI
21st February 2025
59AQI
22nd February 2025
61AQI
23rd February 2025
61AQI
24th February 2025
60AQI
25th February 2025
59AQI
26th February 2025
59AQI
27th February 2025
57AQI
28th February 2025
58AQI
1st March 2025
58AQI
2nd March 2025
57AQI
3rd March 2025
59AQI
4th March 2025
57AQI
5th March 2025
56AQI
6th March 2025
56AQI
7th March 2025
55AQI
8th March 2025
55AQI
9th March 2025
53AQI
10th March 2025
52AQI
11th March 2025
52AQI
12th March 2025
51AQI
13th March 2025
52AQI
14th March 2025
52AQI
15th March 2025
50AQI
16th March 2025
50AQI
17th March 2025
49AQI
18th March 2025
48AQI
19th March 2025
47AQI
20th March 2025
47AQI
21st March 2025
47AQI
22nd March 2025
49AQI
23rd March 2025
50AQI
24th March 2025
50AQI
25th March 2025
50AQI
26th March 2025
50AQI
27th March 2025
51AQI
28th March 2025
50AQI
29th March 2025
50AQI
30th March 2025
50AQI
31st March 2025
50AQI
1st April 2025
48AQI
2nd April 2025
48AQI
3rd April 2025
48AQI
4th April 2025
48AQI
5th April 2025
47AQI
6th April 2025
48AQI
7th April 2025
47AQI
8th April 2025
49AQI
9th April 2025
49AQI
10th April 2025
48AQI
11th April 2025
50AQI
12th April 2025
49AQI
13th April 2025
52AQI
14th April 2025
54AQI
15th April 2025
55AQI
16th April 2025
55AQI
17th April 2025
55AQI
18th April 2025
56AQI
19th April 2025
55AQI
20th April 2025
56AQI
21st April 2025
55AQI
22nd April 2025
55AQI
23rd April 2025
55AQI
24th April 2025
55AQI
25th April 2025
54AQI
26th April 2025
54AQI
27th April 2025
54AQI
28th April 2025
54AQI
29th April 2025
53AQI
30th April 2025
54AQI
1st May 2025
54AQI
2nd May 2025
53AQI
3rd May 2025
52AQI
4th May 2025
52AQI
5th May 2025
52AQI
6th May 2025
53AQI
7th May 2025
53AQI
8th May 2025
54AQI
9th May 2025
53AQI
10th May 2025
52AQI
11th May 2025
52AQI
12th May 2025
52AQI
13th May 2025
53AQI
14th May 2025
53AQI
15th May 2025
53AQI
16th May 2025
53AQI
17th May 2025
52AQI
18th May 2025
52AQI
19th May 2025
49AQI
20th May 2025
46AQI
21st May 2025
49AQI
22nd May 2025
45AQI
23rd May 2025
45AQI
24th May 2025
44AQI
25th May 2025
46AQI
26th May 2025
46AQI
27th May 2025
46AQI
28th May 2025
47AQI
29th May 2025
48AQI
30th May 2025
47AQI
31st May 2025
50AQI
1st June 2025
50AQI
2nd June 2025
49AQI
3rd June 2025
50AQI
4th June 2025
48AQI
5th June 2025
49AQI
6th June 2025
48AQI
7th June 2025
47AQI
8th June 2025
44AQI
9th June 2025
44AQI
10th June 2025
42AQI
11th June 2025
42AQI
12th June 2025
42AQI
13th June 2025
42AQI
14th June 2025
42AQI
15th June 2025
41AQI
16th June 2025
41AQI
17th June 2025
42AQI
18th June 2025
44AQI
19th June 2025
47AQI
20th June 2025
49AQI
21st June 2025
49AQI
22nd June 2025
49AQI
23rd June 2025
49AQI
24th June 2025
49AQI
25th June 2025
50AQI
26th June 2025
51AQI
27th June 2025
50AQI
28th June 2025
51AQI
29th June 2025
51AQI
30th June 2025
50AQI
1st July 2025
50AQI
2nd July 2025
48AQI
3rd July 2025
48AQI
4th July 2025
48AQI
5th July 2025
49AQI
6th July 2025
48AQI
7th July 2025
49AQI
8th July 2025
49AQI
9th July 2025
49AQI
10th July 2025
50AQI
11th July 2025
50AQI
12th July 2025
49AQI
13th July 2025
50AQI
14th July 2025
50AQI
15th July 2025
50AQI
16th July 2025
50AQI
17th July 2025
51AQI
18th July 2025
50AQI
19th July 2025
51AQI
20th July 2025
50AQI
21st July 2025
48AQI
22nd July 2025
47AQI
23rd July 2025
47AQI
24th July 2025
49AQI
25th July 2025
50AQI
26th July 2025
51AQI
27th July 2025
51AQI
28th July 2025
51AQI
29th July 2025
53AQI
30th July 2025
52AQI
31st July 2025
52AQI
1st August 2025
53AQI
2nd August 2025
53AQI
3rd August 2025
54AQI
4th August 2025
51AQI
5th August 2025
48AQI
6th August 2025
47AQI
7th August 2025
46AQI
8th August 2025
45AQI
9th August 2025
44AQI
10th August 2025
41AQI
11th August 2025
39AQI
12th August 2025
36AQI
13th August 2025
37AQI
14th August 2025
36AQI
15th August 2025
34AQI
16th August 2025
36AQI
17th August 2025
37AQI
18th August 2025
37AQI
19th August 2025
41AQI
20th August 2025
36AQI
21st August 2025
37AQI
22nd August 2025
40AQI
23rd August 2025
42AQI
24th August 2025
45AQI
25th August 2025
45AQI
26th August 2025
42AQI
27th August 2025
47AQI
28th August 2025
48AQI
29th August 2025
49AQI
30th August 2025
50AQI
31st August 2025
52AQI
1st September 2025
49AQI
2nd September 2025
43AQI
3rd September 2025
41AQI
4th September 2025
43AQI
5th September 2025
36AQI
6th September 2025
32AQI
7th September 2025
31AQI
8th September 2025
29AQI
9th September 2025
31AQI
10th September 2025
30AQI
11th September 2025
29AQI
12th September 2025
31AQI
13th September 2025
28AQI
14th September 2025
28AQI
15th September 2025
29AQI
16th September 2025
30AQI
17th September 2025
33AQI
18th September 2025
35AQI
19th September 2025
35AQI
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

56AQI

56AQI

52AQI

52AQI

50AQI

47AQI

50AQI

43AQI

34AQI

No. of days

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

202549AQI

31
28
16
15
12
18
13
18
27
3
23
8
26
5
19
136
126

Highest AQI recorded in

February

56AQI

Lowest AQI recorded in

September

34AQI

202416AQI

31
29
29
28
31
11
18
31
31
27
31
30
6
25
315
43

Highest AQI recorded in

December

52AQI

Lowest AQI recorded in

February

0AQI

20233AQI

25
26
31
30
31
30
29
31
29
31
28
27
3
348
3

Highest AQI recorded in

December

32AQI

Lowest AQI recorded in

November

0AQI

20220AQI

28
20
25
22
27
15
20
2
20
18
22
28
247

Highest AQI recorded in

January

0AQI

Lowest AQI recorded in

December

0AQI

20215AQI

28
23
31
29
31
30
28
22
23
28
29
26
328

Highest AQI recorded in

February

17AQI

Lowest AQI recorded in

December

0AQI

202013AQI

13
19
18
28
27
31
30
31
30
30
257

Highest AQI recorded in

March

20AQI

Lowest AQI recorded in

July

11AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
49AQI
Least Polluted Year Recorded
2022(Avg.)
0AQI

Kuala Belait's annual 2025 AQI (49) shows an average percentage change of 624.4% (worsened AQI) compared to previous years: 2020 (13), 2021 (5), 2022 (0), 2023 (3), 2024 (16).