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Central Water Catchment, Central Region, Singapore 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

Central Water Catchment, Central Region, Singapore

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
7th Oct 2023
157AQI
Lowest AQI recorded on
27th Oct 2022
20AQI

Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 59 of Moderate air quality, showing improvement over 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025

Central Water Catchment, Central Region, Singapore

AQI
Day
Night
.

6 AM3rd Oct 2025

7 PM

5 AM4th Oct 2025

Day time
Avg. Highest Time
9AM3rd Oct

65AQI

Avg. Lowest Time
3PM3rd Oct

46AQI

Night time
Avg. Highest Time
1AM4th Oct

72AQI

Avg. Lowest Time
7PM3rd Oct

48AQI

In the last 24 hours,

Central Water Catchment's AQI reached its highest point of 72 at 1 AM during the Night, while the lowest point, 46, was recorded at 3 PM during the Day between 3rd Oct and 4th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Central Water Catchment, Central Region, Singapore

SepOct
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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
4th Sep 2025546 AMAQI
4th Sep 2025547 AMAQI
4th Sep 2025568 AMAQI
4th Sep 2025589 AMAQI
4th Sep 20254410 AMAQI
4th Sep 20254411 AMAQI
4th Sep 20254112 PMAQI
4th Sep 2025351 PMAQI
4th Sep 2025462 PMAQI
4th Sep 2025403 PMAQI
4th Sep 2025334 PMAQI
4th Sep 2025265 PMAQI
4th Sep 2025266 PMAQI
4th Sep 2025437 PMAQI
4th Sep 2025538 PMAQI
4th Sep 2025519 PMAQI
4th Sep 20255310 PMAQI
4th Sep 20254811 PMAQI
5th Sep 20254712 AMAQI
5th Sep 2025541 AMAQI
5th Sep 2025532 AMAQI
5th Sep 2025543 AMAQI
5th Sep 2025534 AMAQI
5th Sep 2025525 AMAQI

28°C27/29°C

5th Sep 2025526 AMAQI
5th Sep 2025527 AMAQI
5th Sep 2025508 AMAQI
5th Sep 2025529 AMAQI
5th Sep 20255310 AMAQI
5th Sep 20255011 AMAQI
5th Sep 20253212 PMAQI
5th Sep 2025341 PMAQI
5th Sep 2025342 PMAQI
5th Sep 2025433 PMAQI
5th Sep 2025434 PMAQI
5th Sep 2025335 PMAQI
5th Sep 2025376 PMAQI
5th Sep 2025427 PMAQI
5th Sep 2025468 PMAQI
5th Sep 2025529 PMAQI
5th Sep 20255010 PMAQI
5th Sep 20254911 PMAQI
6th Sep 20254712 AMAQI
6th Sep 2025461 AMAQI
6th Sep 2025492 AMAQI
6th Sep 2025513 AMAQI
6th Sep 2025484 AMAQI
6th Sep 2025505 AMAQI

28°C27/29°C

6th Sep 2025506 AMAQI
6th Sep 2025507 AMAQI
6th Sep 2025328 AMAQI
6th Sep 2025569 AMAQI
6th Sep 20255210 AMAQI
6th Sep 20256011 AMAQI
6th Sep 20255212 PMAQI
6th Sep 2025521 PMAQI
6th Sep 2025482 PMAQI
6th Sep 2025523 PMAQI
6th Sep 2025504 PMAQI
6th Sep 2025415 PMAQI
6th Sep 2025446 PMAQI
6th Sep 2025497 PMAQI
6th Sep 2025568 PMAQI
6th Sep 2025599 PMAQI
6th Sep 20255510 PMAQI
6th Sep 20255411 PMAQI
7th Sep 20255012 AMAQI
7th Sep 2025511 AMAQI
7th Sep 2025492 AMAQI
7th Sep 2025523 AMAQI
7th Sep 2025504 AMAQI
7th Sep 2025505 AMAQI

28°C27/29°C

7th Sep 2025526 AMAQI
7th Sep 2025497 AMAQI
7th Sep 2025408 AMAQI
7th Sep 2025369 AMAQI
7th Sep 20253710 AMAQI
7th Sep 20254211 AMAQI
7th Sep 20253612 PMAQI
7th Sep 2025441 PMAQI
7th Sep 2025472 PMAQI
7th Sep 2025523 PMAQI
7th Sep 2025524 PMAQI
7th Sep 2025515 PMAQI
7th Sep 2025536 PMAQI
7th Sep 2025547 PMAQI
7th Sep 2025548 PMAQI
7th Sep 2025549 PMAQI
7th Sep 20255410 PMAQI
7th Sep 20255611 PMAQI
8th Sep 20255612 AMAQI
8th Sep 2025511 AMAQI
8th Sep 2025512 AMAQI
8th Sep 2025483 AMAQI
8th Sep 2025484 AMAQI
8th Sep 2025465 AMAQI

27°C26/28°C

8th Sep 2025486 AMAQI
8th Sep 2025477 AMAQI
8th Sep 2025568 AMAQI
8th Sep 2025679 AMAQI
8th Sep 20257010 AMAQI
8th Sep 20256611 AMAQI
8th Sep 20256512 PMAQI
8th Sep 2025591 PMAQI
8th Sep 2025542 PMAQI
8th Sep 2025573 PMAQI
8th Sep 2025554 PMAQI
8th Sep 2025525 PMAQI
8th Sep 2025546 PMAQI
8th Sep 2025527 PMAQI
8th Sep 2025528 PMAQI
8th Sep 2025529 PMAQI
8th Sep 20255310 PMAQI
8th Sep 20255311 PMAQI
9th Sep 20255312 AMAQI
9th Sep 2025501 AMAQI
9th Sep 2025502 AMAQI
9th Sep 2025523 AMAQI
9th Sep 2025544 AMAQI
9th Sep 2025535 AMAQI

28°C27/30°C

9th Sep 2025546 AMAQI
9th Sep 2025547 AMAQI
9th Sep 2025608 AMAQI
9th Sep 2025529 AMAQI
9th Sep 20255010 AMAQI
9th Sep 20256011 AMAQI
9th Sep 20255312 PMAQI
9th Sep 2025481 PMAQI
9th Sep 2025572 PMAQI
9th Sep 2025513 PMAQI
9th Sep 2025484 PMAQI
9th Sep 2025395 PMAQI
9th Sep 2025376 PMAQI
9th Sep 2025447 PMAQI
9th Sep 2025508 PMAQI
9th Sep 2025579 PMAQI
9th Sep 20255410 PMAQI
9th Sep 20254711 PMAQI
10th Sep 20255212 AMAQI
10th Sep 2025491 AMAQI
10th Sep 2025502 AMAQI
10th Sep 2025503 AMAQI
10th Sep 2025524 AMAQI
10th Sep 2025525 AMAQI

28°C27/29°C

10th Sep 2025526 AMAQI
10th Sep 2025527 AMAQI
10th Sep 2025698 AMAQI
10th Sep 2025629 AMAQI
10th Sep 20256010 AMAQI
10th Sep 20255011 AMAQI
10th Sep 20256112 PMAQI
10th Sep 2025481 PMAQI
10th Sep 2025342 PMAQI
10th Sep 2025603 PMAQI
10th Sep 2025504 PMAQI
10th Sep 2025565 PMAQI
10th Sep 2025546 PMAQI
10th Sep 2025567 PMAQI
10th Sep 2025528 PMAQI
10th Sep 2025629 PMAQI
10th Sep 20255910 PMAQI
10th Sep 20255611 PMAQI
11th Sep 20255212 AMAQI
11th Sep 2025531 AMAQI
11th Sep 2025502 AMAQI
11th Sep 2025533 AMAQI
11th Sep 2025544 AMAQI
11th Sep 2025555 AMAQI

28°C26/28°C

11th Sep 2025546 AMAQI
11th Sep 2025527 AMAQI
11th Sep 2025728 AMAQI
11th Sep 2025649 AMAQI
11th Sep 20256610 AMAQI
11th Sep 20254211 AMAQI
11th Sep 20254412 PMAQI
11th Sep 2025421 PMAQI
11th Sep 2025612 PMAQI
11th Sep 2025503 PMAQI
11th Sep 2025434 PMAQI
11th Sep 2025475 PMAQI
11th Sep 2025436 PMAQI
11th Sep 2025507 PMAQI
11th Sep 2025538 PMAQI
11th Sep 2025569 PMAQI
11th Sep 20255210 PMAQI
11th Sep 20255211 PMAQI
12th Sep 20255412 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025462 AMAQI
12th Sep 2025533 AMAQI
12th Sep 2025544 AMAQI
12th Sep 2025545 AMAQI

28°C26/29°C

12th Sep 2025556 AMAQI
12th Sep 2025537 AMAQI
12th Sep 2025408 AMAQI
12th Sep 2025529 AMAQI
12th Sep 20254210 AMAQI
12th Sep 20254511 AMAQI
12th Sep 20254212 PMAQI
12th Sep 2025421 PMAQI
12th Sep 2025402 PMAQI
12th Sep 2025383 PMAQI
12th Sep 2025404 PMAQI
12th Sep 2025475 PMAQI
12th Sep 2025456 PMAQI
12th Sep 2025487 PMAQI
12th Sep 2025478 PMAQI
12th Sep 2025439 PMAQI
12th Sep 20254910 PMAQI
12th Sep 20254811 PMAQI
13th Sep 20255212 AMAQI
13th Sep 2025511 AMAQI
13th Sep 2025482 AMAQI
13th Sep 2025503 AMAQI
13th Sep 2025524 AMAQI
13th Sep 2025515 AMAQI

26°C26/27°C

13th Sep 2025516 AMAQI
13th Sep 2025507 AMAQI
13th Sep 2025538 AMAQI
13th Sep 2025409 AMAQI
13th Sep 20254410 AMAQI
13th Sep 20253811 AMAQI
13th Sep 20253212 PMAQI
13th Sep 2025291 PMAQI
13th Sep 2025482 PMAQI
13th Sep 2025393 PMAQI
13th Sep 2025484 PMAQI
13th Sep 2025415 PMAQI
13th Sep 2025286 PMAQI
13th Sep 2025447 PMAQI
13th Sep 2025448 PMAQI
13th Sep 2025429 PMAQI
13th Sep 20254810 PMAQI
13th Sep 20255011 PMAQI
14th Sep 20254712 AMAQI
14th Sep 2025511 AMAQI
14th Sep 2025512 AMAQI
14th Sep 2025483 AMAQI
14th Sep 2025484 AMAQI
14th Sep 2025485 AMAQI

26°C25/27°C

14th Sep 2025476 AMAQI
14th Sep 2025487 AMAQI
14th Sep 2025598 AMAQI
14th Sep 2025619 AMAQI
14th Sep 20257210 AMAQI
14th Sep 20256211 AMAQI
14th Sep 20255212 PMAQI
14th Sep 2025651 PMAQI
14th Sep 2025542 PMAQI
14th Sep 2025533 PMAQI
14th Sep 2025564 PMAQI
14th Sep 2025575 PMAQI
14th Sep 2025536 PMAQI
14th Sep 2025547 PMAQI
14th Sep 2025568 PMAQI
14th Sep 2025509 PMAQI
14th Sep 20256010 PMAQI
14th Sep 20255811 PMAQI
15th Sep 20255112 AMAQI
15th Sep 2025481 AMAQI
15th Sep 2025482 AMAQI
15th Sep 2025513 AMAQI
15th Sep 2025524 AMAQI
15th Sep 2025525 AMAQI

28°C26/30°C

15th Sep 2025526 AMAQI
15th Sep 2025497 AMAQI
15th Sep 2025408 AMAQI
15th Sep 2025499 AMAQI
15th Sep 20254610 AMAQI
15th Sep 20253611 AMAQI
15th Sep 20253012 PMAQI
15th Sep 2025291 PMAQI
15th Sep 2025362 PMAQI
15th Sep 2025503 PMAQI
15th Sep 2025564 PMAQI
15th Sep 2025565 PMAQI
15th Sep 2025656 PMAQI
15th Sep 2025587 PMAQI
15th Sep 2025578 PMAQI
15th Sep 2025559 PMAQI
15th Sep 20255310 PMAQI
15th Sep 20255511 PMAQI
16th Sep 20255612 AMAQI
16th Sep 2025521 AMAQI
16th Sep 2025502 AMAQI
16th Sep 2025503 AMAQI
16th Sep 2025494 AMAQI
16th Sep 2025495 AMAQI

28°C27/29°C

16th Sep 2025486 AMAQI
16th Sep 2025487 AMAQI
16th Sep 2025718 AMAQI
16th Sep 2025769 AMAQI
16th Sep 20258010 AMAQI
16th Sep 20257411 AMAQI
16th Sep 20257112 PMAQI
16th Sep 2025691 PMAQI
16th Sep 2025662 PMAQI
16th Sep 2025623 PMAQI
16th Sep 2025614 PMAQI
16th Sep 2025605 PMAQI
16th Sep 2025566 PMAQI
16th Sep 2025547 PMAQI
16th Sep 2025498 PMAQI
16th Sep 2025529 PMAQI
16th Sep 20254910 PMAQI
16th Sep 20255211 PMAQI
17th Sep 20255412 AMAQI
17th Sep 2025511 AMAQI
17th Sep 2025512 AMAQI
17th Sep 2025543 AMAQI
17th Sep 2025564 AMAQI
17th Sep 2025565 AMAQI

28°C27/29°C

17th Sep 2025566 AMAQI
17th Sep 2025567 AMAQI
17th Sep 2025348 AMAQI
17th Sep 2025279 AMAQI
17th Sep 20252610 AMAQI
17th Sep 20253011 AMAQI
17th Sep 20253812 PMAQI
17th Sep 2025381 PMAQI
17th Sep 2025362 PMAQI
17th Sep 2025413 PMAQI
17th Sep 2025424 PMAQI
17th Sep 2025525 PMAQI
17th Sep 2025406 PMAQI
17th Sep 2025397 PMAQI
17th Sep 2025468 PMAQI
17th Sep 2025509 PMAQI
17th Sep 20255210 PMAQI
17th Sep 20255411 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025541 AMAQI
18th Sep 2025542 AMAQI
18th Sep 2025533 AMAQI
18th Sep 2025524 AMAQI
18th Sep 2025515 AMAQI

27°C25/27°C

18th Sep 2025526 AMAQI
18th Sep 2025527 AMAQI
18th Sep 2025518 AMAQI
18th Sep 2025479 AMAQI
18th Sep 20254810 AMAQI
18th Sep 20255011 AMAQI
18th Sep 20254712 PMAQI
18th Sep 2025461 PMAQI
18th Sep 2025482 PMAQI
18th Sep 2025553 PMAQI
18th Sep 2025564 PMAQI
18th Sep 2025575 PMAQI
18th Sep 2025486 PMAQI
18th Sep 2025537 PMAQI
18th Sep 2025568 PMAQI
18th Sep 2025619 PMAQI
18th Sep 20256310 PMAQI
18th Sep 20256411 PMAQI
19th Sep 20255912 AMAQI
19th Sep 2025551 AMAQI
19th Sep 2025522 AMAQI
19th Sep 2025523 AMAQI
19th Sep 2025534 AMAQI
19th Sep 2025525 AMAQI

28°C27/29°C

19th Sep 2025526 AMAQI
19th Sep 2025537 AMAQI
19th Sep 2025498 AMAQI
19th Sep 2025519 AMAQI
19th Sep 20255010 AMAQI
19th Sep 20255111 AMAQI
19th Sep 20255412 PMAQI
19th Sep 2025501 PMAQI
19th Sep 2025522 PMAQI
19th Sep 2025523 PMAQI
19th Sep 2025524 PMAQI
19th Sep 2025545 PMAQI
19th Sep 2025586 PMAQI
19th Sep 2025617 PMAQI
19th Sep 2025598 PMAQI
19th Sep 2025599 PMAQI
19th Sep 20255710 PMAQI
19th Sep 20255611 PMAQI
20th Sep 20255812 AMAQI
20th Sep 2025541 AMAQI
20th Sep 2025542 AMAQI
20th Sep 2025543 AMAQI
20th Sep 2025544 AMAQI
20th Sep 2025545 AMAQI

28°C27/29°C

20th Sep 2025546 AMAQI
20th Sep 2025547 AMAQI
20th Sep 2025618 AMAQI
20th Sep 2025719 AMAQI
20th Sep 20256410 AMAQI
20th Sep 20256211 AMAQI
20th Sep 20255212 PMAQI
20th Sep 2025501 PMAQI
20th Sep 2025422 PMAQI
20th Sep 2025423 PMAQI
20th Sep 2025564 PMAQI
20th Sep 2025615 PMAQI
20th Sep 2025586 PMAQI
20th Sep 2025547 PMAQI
20th Sep 2025558 PMAQI
20th Sep 2025619 PMAQI
20th Sep 20256110 PMAQI
20th Sep 20255511 PMAQI
21st Sep 20255612 AMAQI
21st Sep 2025541 AMAQI
21st Sep 2025562 AMAQI
21st Sep 2025543 AMAQI
21st Sep 2025554 AMAQI
21st Sep 2025555 AMAQI

28°C26/29°C

21st Sep 2025556 AMAQI
21st Sep 2025557 AMAQI
21st Sep 2025428 AMAQI
21st Sep 2025359 AMAQI
21st Sep 20254710 AMAQI
21st Sep 20253411 AMAQI
21st Sep 20254012 PMAQI
21st Sep 2025371 PMAQI
21st Sep 2025472 PMAQI
21st Sep 2025463 PMAQI
21st Sep 2025494 PMAQI
21st Sep 2025355 PMAQI
21st Sep 2025446 PMAQI
21st Sep 2025497 PMAQI
21st Sep 2025548 PMAQI
21st Sep 2025569 PMAQI
21st Sep 20255710 PMAQI
21st Sep 20255411 PMAQI
22nd Sep 20255312 AMAQI
22nd Sep 2025551 AMAQI
22nd Sep 2025552 AMAQI
22nd Sep 2025533 AMAQI
22nd Sep 2025544 AMAQI
22nd Sep 2025545 AMAQI

28°C27/29°C

22nd Sep 2025546 AMAQI
22nd Sep 2025537 AMAQI
22nd Sep 2025368 AMAQI
22nd Sep 2025369 AMAQI
22nd Sep 20254310 AMAQI
22nd Sep 20254711 AMAQI
22nd Sep 20253612 PMAQI
22nd Sep 2025381 PMAQI
22nd Sep 2025322 PMAQI
22nd Sep 2025353 PMAQI
22nd Sep 2025384 PMAQI
22nd Sep 2025475 PMAQI
22nd Sep 2025436 PMAQI
22nd Sep 2025537 PMAQI
22nd Sep 2025558 PMAQI
22nd Sep 2025569 PMAQI
22nd Sep 20255810 PMAQI
22nd Sep 20255911 PMAQI
23rd Sep 20255612 AMAQI
23rd Sep 2025541 AMAQI
23rd Sep 2025542 AMAQI
23rd Sep 2025533 AMAQI
23rd Sep 2025524 AMAQI
23rd Sep 2025535 AMAQI

29°C28/30°C

23rd Sep 2025526 AMAQI
23rd Sep 2025527 AMAQI
23rd Sep 2025548 AMAQI
23rd Sep 2025649 AMAQI
23rd Sep 20257010 AMAQI
23rd Sep 20257411 AMAQI
23rd Sep 20256112 PMAQI
23rd Sep 2025481 PMAQI
23rd Sep 2025492 PMAQI
23rd Sep 2025523 PMAQI
23rd Sep 2025424 PMAQI
23rd Sep 2025525 PMAQI
23rd Sep 2025446 PMAQI
23rd Sep 2025507 PMAQI
23rd Sep 2025578 PMAQI
23rd Sep 2025589 PMAQI
23rd Sep 20256010 PMAQI
23rd Sep 20255611 PMAQI
24th Sep 20255912 AMAQI
24th Sep 2025561 AMAQI
24th Sep 2025542 AMAQI
24th Sep 2025543 AMAQI
24th Sep 2025554 AMAQI
24th Sep 2025555 AMAQI

29°C27/30°C

24th Sep 2025556 AMAQI
24th Sep 2025557 AMAQI
24th Sep 2025568 AMAQI
24th Sep 2025589 AMAQI
24th Sep 20256210 AMAQI
24th Sep 20256211 AMAQI
24th Sep 20256412 PMAQI
24th Sep 2025601 PMAQI
24th Sep 2025582 PMAQI
24th Sep 2025593 PMAQI
24th Sep 2025634 PMAQI
24th Sep 2025655 PMAQI
24th Sep 2025646 PMAQI
24th Sep 2025607 PMAQI
24th Sep 2025608 PMAQI
24th Sep 2025629 PMAQI
24th Sep 20256010 PMAQI
24th Sep 20256111 PMAQI
25th Sep 20256012 AMAQI
25th Sep 2025551 AMAQI
25th Sep 2025542 AMAQI
25th Sep 2025553 AMAQI
25th Sep 2025574 AMAQI
25th Sep 2025565 AMAQI

29°C28/30°C

25th Sep 2025566 AMAQI
25th Sep 2025577 AMAQI
25th Sep 2025488 AMAQI
25th Sep 2025499 AMAQI
25th Sep 20255910 AMAQI
25th Sep 20256011 AMAQI
25th Sep 20255612 PMAQI
25th Sep 2025541 PMAQI
25th Sep 2025542 PMAQI
25th Sep 2025543 PMAQI
25th Sep 2025544 PMAQI
25th Sep 2025545 PMAQI
25th Sep 2025586 PMAQI
25th Sep 2025717 PMAQI
25th Sep 2025798 PMAQI
25th Sep 2025799 PMAQI
25th Sep 20257810 PMAQI
25th Sep 20257311 PMAQI
26th Sep 20257812 AMAQI
26th Sep 2025801 AMAQI
26th Sep 2025822 AMAQI
26th Sep 2025753 AMAQI
26th Sep 2025774 AMAQI
26th Sep 2025875 AMAQI

29°C27/30°C

26th Sep 2025866 AMAQI
26th Sep 2025917 AMAQI
26th Sep 2025938 AMAQI
26th Sep 2025929 AMAQI
26th Sep 20258810 AMAQI
26th Sep 20258711 AMAQI
26th Sep 20258612 PMAQI
26th Sep 2025871 PMAQI
26th Sep 2025872 PMAQI
26th Sep 2025853 PMAQI
26th Sep 2025844 PMAQI
26th Sep 2025835 PMAQI
26th Sep 2025906 PMAQI
26th Sep 20251017 PMAQI
26th Sep 20251138 PMAQI
26th Sep 20251079 PMAQI
26th Sep 20258210 PMAQI
26th Sep 20257611 PMAQI
27th Sep 20258012 AMAQI
27th Sep 2025741 AMAQI
27th Sep 2025702 AMAQI
27th Sep 2025663 AMAQI
27th Sep 2025654 AMAQI
27th Sep 2025705 AMAQI

29°C28/30°C

27th Sep 2025656 AMAQI
27th Sep 2025597 AMAQI
27th Sep 2025608 AMAQI
27th Sep 2025589 AMAQI
27th Sep 20256010 AMAQI
27th Sep 20256111 AMAQI
27th Sep 20256112 PMAQI
27th Sep 2025691 PMAQI
27th Sep 2025712 PMAQI
27th Sep 2025723 PMAQI
27th Sep 2025714 PMAQI
27th Sep 2025695 PMAQI
27th Sep 2025686 PMAQI
27th Sep 2025687 PMAQI
27th Sep 2025718 PMAQI
27th Sep 2025879 PMAQI
27th Sep 20257810 PMAQI
27th Sep 20256611 PMAQI
28th Sep 20256612 AMAQI
28th Sep 2025661 AMAQI
28th Sep 2025632 AMAQI
28th Sep 2025643 AMAQI
28th Sep 2025674 AMAQI
28th Sep 2025665 AMAQI

29°C28/30°C

28th Sep 2025636 AMAQI
28th Sep 2025637 AMAQI
28th Sep 2025688 AMAQI
28th Sep 2025719 AMAQI
28th Sep 20257310 AMAQI
28th Sep 20257411 AMAQI
28th Sep 20257212 PMAQI
28th Sep 2025671 PMAQI
28th Sep 2025662 PMAQI
28th Sep 2025693 PMAQI
28th Sep 2025694 PMAQI
28th Sep 2025635 PMAQI
28th Sep 2025656 PMAQI
28th Sep 2025777 PMAQI
28th Sep 2025808 PMAQI
28th Sep 2025779 PMAQI
28th Sep 20257310 PMAQI
28th Sep 20257011 PMAQI
29th Sep 20256612 AMAQI
29th Sep 2025641 AMAQI
29th Sep 2025592 AMAQI
29th Sep 2025533 AMAQI
29th Sep 2025504 AMAQI
29th Sep 2025405 AMAQI

28°C27/29°C

29th Sep 2025356 AMAQI
29th Sep 2025317 AMAQI
29th Sep 2025298 AMAQI
29th Sep 2025339 AMAQI
29th Sep 20253010 AMAQI
29th Sep 20253011 AMAQI
29th Sep 20253212 PMAQI
29th Sep 2025431 PMAQI
29th Sep 2025382 PMAQI
29th Sep 2025303 PMAQI
29th Sep 2025334 PMAQI
29th Sep 2025325 PMAQI
29th Sep 2025296 PMAQI
29th Sep 2025267 PMAQI
29th Sep 2025258 PMAQI
29th Sep 2025309 PMAQI
29th Sep 20253410 PMAQI
29th Sep 20253311 PMAQI
30th Sep 20253312 AMAQI
30th Sep 2025311 AMAQI
30th Sep 2025292 AMAQI
30th Sep 2025273 AMAQI
30th Sep 2025274 AMAQI
30th Sep 2025285 AMAQI

28°C27/29°C

30th Sep 2025266 AMAQI
30th Sep 2025287 AMAQI
30th Sep 2025348 AMAQI
30th Sep 2025329 AMAQI
30th Sep 20254810 AMAQI
30th Sep 20255111 AMAQI
30th Sep 20255412 PMAQI
30th Sep 2025521 PMAQI
30th Sep 2025572 PMAQI
30th Sep 2025613 PMAQI
30th Sep 2025604 PMAQI
30th Sep 2025605 PMAQI
30th Sep 2025676 PMAQI
30th Sep 2025657 PMAQI
30th Sep 2025658 PMAQI
30th Sep 2025659 PMAQI
30th Sep 20256210 PMAQI
30th Sep 20256111 PMAQI
1st Oct 20255712 AMAQI
1st Oct 2025531 AMAQI
1st Oct 2025522 AMAQI
1st Oct 2025473 AMAQI
1st Oct 2025354 AMAQI
1st Oct 2025355 AMAQI

28°C26/29°C

1st Oct 2025466 AMAQI
1st Oct 2025557 AMAQI
1st Oct 2025578 AMAQI
1st Oct 2025679 AMAQI
1st Oct 20256810 AMAQI
1st Oct 20255111 AMAQI
1st Oct 20254212 PMAQI
1st Oct 2025281 PMAQI
1st Oct 2025282 PMAQI
1st Oct 2025283 PMAQI
1st Oct 2025274 PMAQI
1st Oct 2025285 PMAQI
1st Oct 2025286 PMAQI
1st Oct 2025427 PMAQI
1st Oct 2025338 PMAQI
1st Oct 2025259 PMAQI
1st Oct 20252610 PMAQI
1st Oct 20252611 PMAQI
2nd Oct 20254012 AMAQI
2nd Oct 2025491 AMAQI
2nd Oct 2025502 AMAQI
2nd Oct 2025593 AMAQI
2nd Oct 2025594 AMAQI
2nd Oct 2025665 AMAQI

28°C27/29°C

2nd Oct 2025656 AMAQI
2nd Oct 2025657 AMAQI
2nd Oct 2025658 AMAQI
2nd Oct 2025689 AMAQI
2nd Oct 20256410 AMAQI
2nd Oct 20256311 AMAQI
2nd Oct 20256112 PMAQI
2nd Oct 2025481 PMAQI
2nd Oct 2025442 PMAQI
2nd Oct 2025423 PMAQI
2nd Oct 2025464 PMAQI
2nd Oct 2025565 PMAQI
2nd Oct 2025646 PMAQI
2nd Oct 2025747 PMAQI
2nd Oct 2025768 PMAQI
2nd Oct 2025789 PMAQI
2nd Oct 20258110 PMAQI
2nd Oct 20257211 PMAQI
3rd Oct 20255512 AMAQI
3rd Oct 2025541 AMAQI
3rd Oct 2025582 AMAQI
3rd Oct 2025583 AMAQI
3rd Oct 2025574 AMAQI
3rd Oct 2025625 AMAQI

27°C26/29°C

3rd Oct 2025586 AMAQI
3rd Oct 2025637 AMAQI
3rd Oct 2025628 AMAQI
3rd Oct 2025659 AMAQI
3rd Oct 20255810 AMAQI
3rd Oct 20255611 AMAQI
3rd Oct 20255612 PMAQI
3rd Oct 2025481 PMAQI
3rd Oct 2025522 PMAQI
3rd Oct 2025463 PMAQI
3rd Oct 2025554 PMAQI
3rd Oct 2025595 PMAQI
3rd Oct 2025606 PMAQI
3rd Oct 2025487 PMAQI
3rd Oct 2025608 PMAQI
3rd Oct 2025579 PMAQI
3rd Oct 20256410 PMAQI
3rd Oct 20256411 PMAQI
4th Oct 20256912 AMAQI
4th Oct 2025721 AMAQI
4th Oct 2025722 AMAQI
4th Oct 2025693 AMAQI
4th Oct 2025654 AMAQI
4th Oct 2025675 AMAQI

28°C27/29°C

4th Oct 2025576 AMAQI
6 AM
4th Oct 2025567 AMAQI
4th Oct 2025548 AMAQI
4th Oct 2025509 AMAQI
4th Oct 20255110 AMAQI
4th Oct 20255411 AMAQI
4th Oct 20255612 PMAQI
12 PM
4th Oct 2025531 PMAQI
4th Oct 2025522 PMAQI
4th Oct 2025513 PMAQI
4th Oct 2025494 PMAQI
4th Oct 2025475 PMAQI
4th Oct 2025506 PMAQI
4th Oct 2025587 PMAQI
7 PM
4th Oct 2025618 PMAQI
4th Oct 2025599 PMAQI
4th Oct 20256010 PMAQI
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
9 AM - 10 AM

56AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
1 PM - 6 PM

51AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 10 AM (Avg. 56), while the lowest AQI was between 1 PM to 6 PM (Avg. 51).
Night time
Avg. Highest Time
8 PM - 10 PM

58AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
12 AM - 5 AM

54AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 10 PM (Avg. 58), while the lowest AQI was between 12 AM to 5 AM (Avg. 54).

2025 Days Vs Air Quality

Central Water Catchment, Central Region, Singapore

2025

35%

96

65%

180

Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)

Good
96 Days
Moderate
180 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 35%

Health Risk Level:

High

In 2025, 35% of 277 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

Central Water Catchment, Central Region, Singapore

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
48AQI
2nd January 2025
56AQI
3rd January 2025
54AQI
4th January 2025
49AQI
5th January 2025
49AQI
6th January 2025
49AQI
7th January 2025
56AQI
8th January 2025
55AQI
9th January 2025
60AQI
10th January 2025
51AQI
11th January 2025
40AQI
12th January 2025
41AQI
13th January 2025
39AQI
14th January 2025
44AQI
15th January 2025
72AQI
16th January 2025
47AQI
17th January 2025
46AQI
18th January 2025
46AQI
19th January 2025
48AQI
20th January 2025
49AQI
21st January 2025
50AQI
22nd January 2025
58AQI
23rd January 2025
50AQI
24th January 2025
57AQI
25th January 2025
50AQI
26th January 2025
51AQI
27th January 2025
44AQI
28th January 2025
57AQI
29th January 2025
53AQI
30th January 2025
55AQI
31st January 2025
54AQI
1st February 2025
56AQI
2nd February 2025
59AQI
3rd February 2025
69AQI
4th February 2025
50AQI
5th February 2025
50AQI
6th February 2025
59AQI
7th February 2025
53AQI
8th February 2025
54AQI
9th February 2025
51AQI
10th February 2025
50AQI
11th February 2025
45AQI
12th February 2025
55AQI
13th February 2025
55AQI
14th February 2025
48AQI
15th February 2025
55AQI
16th February 2025
49AQI
17th February 2025
51AQI
18th February 2025
41AQI
19th February 2025
50AQI
20th February 2025
51AQI
21st February 2025
50AQI
22nd February 2025
47AQI
23rd February 2025
43AQI
24th February 2025
40AQI
25th February 2025
45AQI
26th February 2025
49AQI
27th February 2025
46AQI
28th February 2025
50AQI
1st March 2025
51AQI
2nd March 2025
46AQI
3rd March 2025
53AQI
4th March 2025
52AQI
5th March 2025
62AQI
6th March 2025
41AQI
7th March 2025
52AQI
8th March 2025
47AQI
9th March 2025
47AQI
10th March 2025
41AQI
11th March 2025
42AQI
12th March 2025
39AQI
13th March 2025
46AQI
14th March 2025
38AQI
15th March 2025
44AQI
16th March 2025
39AQI
17th March 2025
39AQI
18th March 2025
46AQI
19th March 2025
46AQI
20th March 2025
41AQI
21st March 2025
59AQI
22nd March 2025
48AQI
23rd March 2025
43AQI
24th March 2025
54AQI
25th March 2025
71AQI
26th March 2025
79AQI
27th March 2025
74AQI
28th March 2025
61AQI
29th March 2025
72AQI
30th March 2025
61AQI
31st March 2025
63AQI
1st April 2025
61AQI
2nd April 2025
48AQI
3rd April 2025
43AQI
4th April 2025
51AQI
5th April 2025
45AQI
6th April 2025
43AQI
7th April 2025
37AQI
8th April 2025
47AQI
9th April 2025
38AQI
10th April 2025
54AQI
11th April 2025
39AQI
12th April 2025
43AQI
13th April 2025
38AQI
14th April 2025
43AQI
15th April 2025
42AQI
16th April 2025
55AQI
17th April 2025
46AQI
18th April 2025
56AQI
19th April 2025
43AQI
20th April 2025
46AQI
21st April 2025
46AQI
22nd April 2025
53AQI
23rd April 2025
54AQI
24th April 2025
63AQI
25th April 2025
62AQI
26th April 2025
54AQI
27th April 2025
54AQI
28th April 2025
53AQI
29th April 2025
56AQI
30th April 2025
44AQI
1st May 2025
53AQI
2nd May 2025
58AQI
3rd May 2025
51AQI
4th May 2025
47AQI
5th May 2025
53AQI
6th May 2025
52AQI
7th May 2025
57AQI
8th May 2025
57AQI
9th May 2025
54AQI
10th May 2025
62AQI
11th May 2025
48AQI
12th May 2025
55AQI
13th May 2025
56AQI
14th May 2025
56AQI
15th May 2025
57AQI
16th May 2025
55AQI
17th May 2025
54AQI
18th May 2025
45AQI
19th May 2025
51AQI
20th May 2025
52AQI
21st May 2025
53AQI
22nd May 2025
56AQI
23rd May 2025
48AQI
24th May 2025
51AQI
25th May 2025
51AQI
26th May 2025
49AQI
27th May 2025
53AQI
28th May 2025
52AQI
29th May 2025
52AQI
30th May 2025
55AQI
31st May 2025
54AQI
1st June 2025
51AQI
2nd June 2025
52AQI
3rd June 2025
55AQI
4th June 2025
59AQI
5th June 2025
58AQI
6th June 2025
46AQI
7th June 2025
47AQI
8th June 2025
43AQI
9th June 2025
53AQI
10th June 2025
42AQI
11th June 2025
47AQI
12th June 2025
54AQI
13th June 2025
47AQI
14th June 2025
45AQI
15th June 2025
40AQI
16th June 2025
42AQI
17th June 2025
48AQI
18th June 2025
46AQI
19th June 2025
47AQI
20th June 2025
52AQI
21st June 2025
58AQI
22nd June 2025
70AQI
23rd June 2025
63AQI
24th June 2025
58AQI
25th June 2025
56AQI
26th June 2025
56AQI
27th June 2025
61AQI
28th June 2025
59AQI
29th June 2025
54AQI
30th June 2025
56AQI
1st July 2025
54AQI
2nd July 2025
54AQI
3rd July 2025
58AQI
4th July 2025
55AQI
5th July 2025
56AQI
6th July 2025
54AQI
7th July 2025
51AQI
8th July 2025
54AQI
9th July 2025
53AQI
10th July 2025
53AQI
11th July 2025
55AQI
12th July 2025
54AQI
13th July 2025
54AQI
14th July 2025
55AQI
15th July 2025
54AQI
16th July 2025
56AQI
17th July 2025
55AQI
18th July 2025
57AQI
19th July 2025
59AQI
20th July 2025
59AQI
21st July 2025
60AQI
22nd July 2025
61AQI
23rd July 2025
68AQI
24th July 2025
64AQI
25th July 2025
62AQI
26th July 2025
58AQI
27th July 2025
56AQI
28th July 2025
58AQI
29th July 2025
61AQI
30th July 2025
65AQI
31st July 2025
59AQI
1st August 2025
57AQI
2nd August 2025
56AQI
3rd August 2025
55AQI
4th August 2025
56AQI
5th August 2025
53AQI
6th August 2025
55AQI
7th August 2025
61AQI
8th August 2025
63AQI
9th August 2025
60AQI
10th August 2025
61AQI
11th August 2025
59AQI
12th August 2025
61AQI
13th August 2025
57AQI
14th August 2025
57AQI
15th August 2025
55AQI
16th August 2025
59AQI
17th August 2025
57AQI
18th August 2025
57AQI
19th August 2025
57AQI
20th August 2025
59AQI
21st August 2025
59AQI
22nd August 2025
63AQI
23rd August 2025
62AQI
24th August 2025
60AQI
25th August 2025
56AQI
26th August 2025
59AQI
27th August 2025
66AQI
28th August 2025
61AQI
29th August 2025
66AQI
30th August 2025
59AQI
31st August 2025
59AQI
1st September 2025
54AQI
2nd September 2025
52AQI
3rd September 2025
53AQI
4th September 2025
47AQI
5th September 2025
46AQI
6th September 2025
51AQI
7th September 2025
49AQI
8th September 2025
54AQI
9th September 2025
51AQI
10th September 2025
54AQI
11th September 2025
52AQI
12th September 2025
48AQI
13th September 2025
45AQI
14th September 2025
54AQI
15th September 2025
50AQI
16th September 2025
57AQI
17th September 2025
46AQI
18th September 2025
53AQI
19th September 2025
54AQI
20th September 2025
56AQI
21st September 2025
49AQI
22nd September 2025
49AQI
23rd September 2025
55AQI
24th September 2025
59AQI
25th September 2025
61AQI
26th September 2025
85AQI
27th September 2025
70AQI
28th September 2025
68AQI
29th September 2025
43AQI
30th September 2025
45AQI
1st October 2025
43AQI
2nd October 2025
57AQI
3rd October 2025
59AQI
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

51AQI

51AQI

52AQI

49AQI

53AQI

52AQI

57AQI

59AQI

54AQI

53AQI

No. of days

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

202553AQI

17
14
16
12
17
14
17
13
5
26
12
18
31
31
11
19
1
2
96
180

Highest AQI recorded in

August

59AQI

Lowest AQI recorded in

April

49AQI

202451AQI

29
2
17
12
13
18
19
11
18
13
13
17
7
24
17
14
10
20
8
23
16
14
17
14
184
182

Highest AQI recorded in

July

61AQI

Lowest AQI recorded in

January

40AQI

202347AQI

28
3
28
30
1
19
11
28
3
26
4
20
11
5
26
5
23
2
28
2
1
14
15
31
234
125
4
1

Highest AQI recorded in

October

80AQI

Lowest AQI recorded in

February

29AQI

202244AQI

17
13
17
4
15
16
8
22
12
19
23
7
20
4
1
17
11
24
7
29
1
31
214
104

Highest AQI recorded in

April

59AQI

Lowest AQI recorded in

August

32AQI

202150AQI

25
6
15
13
17
14
10
20
22
9
12
18
11
20
22
9
13
17
7
24
12
18
18
13
184
181

Highest AQI recorded in

October

59AQI

Lowest AQI recorded in

January

37AQI

202044AQI

5
8
12
9
12
6
29
1
27
4
22
9
23
7
19
12
24
6
29
2
202
64

Highest AQI recorded in

March

53AQI

Lowest AQI recorded in

July

35AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
53AQI
Least Polluted Year Recorded
2020(Avg.)
44AQI

Central Water Catchment's annual 2025 AQI (53) shows an average percentage change of 12.5% (worsened AQI) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (47), 2024 (51).