Upper Peirce, 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
Upper Peirce, 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
157AQILowest AQI recorded on
27th Oct 2022
20AQISame Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 70 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: 17th Oct - 18th Oct 2025
Upper Peirce, Central Water Catchment, Central Region, Singapore
AQI
Day
Night
.
6 AM17th Oct 2025
6 PM
5 AM18th Oct 2025
Day time
Avg. Highest Time
12PM17th Oct
87AQI
Avg. Lowest Time
5PM17th Oct
61AQI
Night time
Avg. Highest Time
10PM17th Oct
96AQI
Avg. Lowest Time
5AM18th Oct
60AQI
In the last 24 hours,
Upper Peirce's AQI reached its highest point of 96 at 10 PM during the Night, while the lowest point, 60, was recorded at 5 AM during the Night between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Upper Peirce, Central Water Catchment, Central Region, Singapore
SepOct
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
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
4th Oct 2025567 AMAQI
4th Oct 2025548 AMAQI
4th Oct 2025509 AMAQI
4th Oct 20255110 AMAQI
4th Oct 20255411 AMAQI
4th Oct 20255612 PMAQI
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
4th Oct 2025618 PMAQI
4th Oct 2025599 PMAQI
4th Oct 20256110 PMAQI
4th Oct 20256511 PMAQI
5th Oct 20257212 AMAQI
5th Oct 2025811 AMAQI
5th Oct 2025762 AMAQI
5th Oct 2025713 AMAQI
5th Oct 2025754 AMAQI
5th Oct 2025635 AMAQI
28°C26/29°C
5th Oct 2025676 AMAQI
5th Oct 2025737 AMAQI
5th Oct 2025738 AMAQI
5th Oct 2025749 AMAQI
5th Oct 20257410 AMAQI
5th Oct 20257511 AMAQI
5th Oct 20256912 PMAQI
5th Oct 2025721 PMAQI
5th Oct 2025702 PMAQI
5th Oct 2025663 PMAQI
5th Oct 2025634 PMAQI
5th Oct 2025645 PMAQI
5th Oct 2025676 PMAQI
5th Oct 2025667 PMAQI
5th Oct 2025688 PMAQI
5th Oct 2025679 PMAQI
5th Oct 20257310 PMAQI
5th Oct 20257611 PMAQI
6th Oct 20256312 AMAQI
6th Oct 2025631 AMAQI
6th Oct 2025692 AMAQI
6th Oct 2025723 AMAQI
6th Oct 2025684 AMAQI
6th Oct 2025735 AMAQI
29°C27/30°C
6th Oct 2025746 AMAQI
6th Oct 2025807 AMAQI
6th Oct 2025808 AMAQI
6th Oct 2025799 AMAQI
6th Oct 20258010 AMAQI
6th Oct 20259511 AMAQI
6th Oct 20259112 PMAQI
6th Oct 2025841 PMAQI
6th Oct 2025862 PMAQI
6th Oct 2025843 PMAQI
6th Oct 2025694 PMAQI
6th Oct 2025665 PMAQI
6th Oct 2025616 PMAQI
6th Oct 2025667 PMAQI
6th Oct 2025708 PMAQI
6th Oct 2025739 PMAQI
6th Oct 20256710 PMAQI
6th Oct 20256711 PMAQI
7th Oct 20257012 AMAQI
7th Oct 2025731 AMAQI
28°C27/29°C
7th Oct 2025567 PMAQI
7th Oct 2025768 PMAQI
7th Oct 2025819 PMAQI
7th Oct 20258710 PMAQI
7th Oct 20258611 PMAQI
8th Oct 20259012 AMAQI
8th Oct 2025911 AMAQI
8th Oct 2025782 AMAQI
8th Oct 2025733 AMAQI
8th Oct 2025724 AMAQI
8th Oct 2025765 AMAQI
28°C27/29°C
8th Oct 2025756 AMAQI
8th Oct 2025757 AMAQI
8th Oct 2025698 AMAQI
8th Oct 2025709 AMAQI
8th Oct 20256410 AMAQI
8th Oct 20256211 AMAQI
8th Oct 20256212 PMAQI
8th Oct 2025641 PMAQI
8th Oct 2025652 PMAQI
8th Oct 2025583 PMAQI
8th Oct 2025564 PMAQI
8th Oct 2025535 PMAQI
8th Oct 2025546 PMAQI
8th Oct 2025657 PMAQI
8th Oct 2025708 PMAQI
8th Oct 2025689 PMAQI
8th Oct 20256610 PMAQI
8th Oct 20256511 PMAQI
9th Oct 20256812 AMAQI
9th Oct 2025651 AMAQI
9th Oct 2025642 AMAQI
9th Oct 2025653 AMAQI
9th Oct 2025664 AMAQI
9th Oct 2025655 AMAQI
28°C27/29°C
9th Oct 2025656 AMAQI
9th Oct 2025657 AMAQI
9th Oct 2025618 AMAQI
9th Oct 2025679 AMAQI
9th Oct 20256910 AMAQI
9th Oct 20257111 AMAQI
9th Oct 20257312 PMAQI
9th Oct 2025771 PMAQI
9th Oct 2025802 PMAQI
9th Oct 2025563 PMAQI
9th Oct 2025464 PMAQI
9th Oct 2025545 PMAQI
9th Oct 2025576 PMAQI
9th Oct 2025567 PMAQI
9th Oct 2025568 PMAQI
9th Oct 2025619 PMAQI
9th Oct 20256210 PMAQI
9th Oct 20256311 PMAQI
10th Oct 20256312 AMAQI
10th Oct 2025731 AMAQI
10th Oct 2025572 AMAQI
10th Oct 2025513 AMAQI
10th Oct 2025504 AMAQI
10th Oct 2025575 AMAQI
28°C27/29°C
10th Oct 2025576 AMAQI
10th Oct 2025587 AMAQI
10th Oct 2025608 AMAQI
10th Oct 2025659 AMAQI
10th Oct 20256110 AMAQI
10th Oct 20256611 AMAQI
10th Oct 20256812 PMAQI
10th Oct 2025631 PMAQI
10th Oct 2025572 PMAQI
10th Oct 2025573 PMAQI
10th Oct 2025574 PMAQI
10th Oct 2025565 PMAQI
10th Oct 2025546 PMAQI
10th Oct 2025547 PMAQI
10th Oct 2025588 PMAQI
10th Oct 2025599 PMAQI
10th Oct 20256010 PMAQI
10th Oct 20256411 PMAQI
11th Oct 20256812 AMAQI
11th Oct 2025651 AMAQI
11th Oct 2025662 AMAQI
11th Oct 2025723 AMAQI
11th Oct 2025694 AMAQI
11th Oct 2025685 AMAQI
28°C27/29°C
11th Oct 2025656 AMAQI
11th Oct 2025707 AMAQI
11th Oct 2025688 AMAQI
11th Oct 2025689 AMAQI
11th Oct 20256710 AMAQI
11th Oct 20257011 AMAQI
11th Oct 20257012 PMAQI
11th Oct 2025671 PMAQI
11th Oct 2025662 PMAQI
11th Oct 2025623 PMAQI
11th Oct 2025684 PMAQI
11th Oct 2025655 PMAQI
11th Oct 2025716 PMAQI
11th Oct 2025697 PMAQI
11th Oct 2025698 PMAQI
11th Oct 2025729 PMAQI
11th Oct 20257210 PMAQI
11th Oct 20258411 PMAQI
12th Oct 20258412 AMAQI
12th Oct 2025811 AMAQI
12th Oct 2025772 AMAQI
12th Oct 2025833 AMAQI
12th Oct 2025864 AMAQI
12th Oct 2025865 AMAQI
28°C27/29°C
12th Oct 2025806 AMAQI
12th Oct 2025837 AMAQI
12th Oct 2025818 AMAQI
12th Oct 2025829 AMAQI
12th Oct 20258310 AMAQI
12th Oct 20258411 AMAQI
12th Oct 20258812 PMAQI
12th Oct 2025801 PMAQI
12th Oct 2025492 PMAQI
12th Oct 2025473 PMAQI
12th Oct 2025544 PMAQI
12th Oct 2025545 PMAQI
12th Oct 2025546 PMAQI
12th Oct 2025587 PMAQI
12th Oct 2025808 PMAQI
12th Oct 2025729 PMAQI
12th Oct 20257410 PMAQI
12th Oct 20256911 PMAQI
13th Oct 20256712 AMAQI
13th Oct 2025661 AMAQI
13th Oct 2025632 AMAQI
13th Oct 2025663 AMAQI
13th Oct 2025644 AMAQI
13th Oct 2025625 AMAQI
28°C28/29°C
13th Oct 2025626 AMAQI
13th Oct 2025607 AMAQI
13th Oct 2025628 AMAQI
13th Oct 2025639 AMAQI
13th Oct 20256710 AMAQI
13th Oct 20256911 AMAQI
13th Oct 20257112 PMAQI
13th Oct 2025771 PMAQI
13th Oct 2025802 PMAQI
13th Oct 2025793 PMAQI
13th Oct 2025774 PMAQI
13th Oct 2025675 PMAQI
13th Oct 2025696 PMAQI
13th Oct 2025697 PMAQI
13th Oct 2025838 PMAQI
13th Oct 2025919 PMAQI
13th Oct 20259210 PMAQI
13th Oct 20258311 PMAQI
14th Oct 20258012 AMAQI
14th Oct 2025761 AMAQI
14th Oct 2025762 AMAQI
14th Oct 2025743 AMAQI
14th Oct 2025744 AMAQI
14th Oct 2025675 AMAQI
28°C27/30°C
14th Oct 2025666 AMAQI
14th Oct 2025677 AMAQI
14th Oct 2025668 AMAQI
14th Oct 2025689 AMAQI
14th Oct 20257110 AMAQI
14th Oct 20257711 AMAQI
14th Oct 20257812 PMAQI
14th Oct 2025791 PMAQI
14th Oct 2025792 PMAQI
14th Oct 2025653 PMAQI
14th Oct 2025564 PMAQI
14th Oct 2025545 PMAQI
14th Oct 2025606 PMAQI
14th Oct 2025597 PMAQI
14th Oct 2025588 PMAQI
14th Oct 2025589 PMAQI
14th Oct 20256310 PMAQI
14th Oct 20256611 PMAQI
15th Oct 20257312 AMAQI
15th Oct 2025761 AMAQI
15th Oct 2025722 AMAQI
15th Oct 2025803 AMAQI
15th Oct 2025804 AMAQI
15th Oct 2025835 AMAQI
29°C27/30°C
15th Oct 2025776 AMAQI
15th Oct 2025747 AMAQI
15th Oct 2025638 AMAQI
15th Oct 2025649 AMAQI
15th Oct 20256010 AMAQI
15th Oct 20256311 AMAQI
15th Oct 20256512 PMAQI
15th Oct 2025611 PMAQI
15th Oct 2025532 PMAQI
15th Oct 2025513 PMAQI
15th Oct 2025464 PMAQI
15th Oct 2025495 PMAQI
15th Oct 2025446 PMAQI
15th Oct 2025547 PMAQI
15th Oct 2025578 PMAQI
15th Oct 2025609 PMAQI
15th Oct 20256110 PMAQI
15th Oct 20256211 PMAQI
16th Oct 20256212 AMAQI
16th Oct 2025581 AMAQI
16th Oct 2025592 AMAQI
16th Oct 2025613 AMAQI
16th Oct 2025624 AMAQI
16th Oct 2025625 AMAQI
28°C27/30°C
16th Oct 2025646 AMAQI
16th Oct 2025647 AMAQI
16th Oct 2025688 AMAQI
16th Oct 2025719 AMAQI
16th Oct 20257010 AMAQI
16th Oct 20257111 AMAQI
16th Oct 20257212 PMAQI
16th Oct 2025631 PMAQI
16th Oct 2025622 PMAQI
16th Oct 2025623 PMAQI
16th Oct 2025504 PMAQI
16th Oct 2025635 PMAQI
16th Oct 2025686 PMAQI
16th Oct 2025697 PMAQI
16th Oct 2025628 PMAQI
16th Oct 2025569 PMAQI
16th Oct 20255410 PMAQI
16th Oct 20255211 PMAQI
17th Oct 20257012 AMAQI
17th Oct 2025791 AMAQI
17th Oct 2025722 AMAQI
17th Oct 2025693 AMAQI
17th Oct 2025694 AMAQI
17th Oct 2025705 AMAQI
28°C27/30°C
17th Oct 2025686 AMAQI
17th Oct 2025697 AMAQI
17th Oct 2025728 AMAQI
17th Oct 2025779 AMAQI
17th Oct 20257310 AMAQI
17th Oct 20257511 AMAQI
17th Oct 20258712 PMAQI
17th Oct 2025831 PMAQI
17th Oct 2025712 PMAQI
17th Oct 2025683 PMAQI
17th Oct 2025644 PMAQI
17th Oct 2025615 PMAQI
17th Oct 2025696 PMAQI
17th Oct 2025747 PMAQI
17th Oct 2025738 PMAQI
17th Oct 2025789 PMAQI
17th Oct 20259610 PMAQI
17th Oct 20259211 PMAQI
18th Oct 20259112 AMAQI
18th Oct 2025831 AMAQI
18th Oct 2025772 AMAQI
18th Oct 2025733 AMAQI
18th Oct 2025684 AMAQI
18th Oct 2025605 AMAQI
28°C27/29°C
18th Oct 2025916 AMAQI
6 AM18th Oct 2025807 AMAQI
18th Oct 2025698 AMAQI
18th Oct 2025629 AMAQI
18th Oct 20255510 AMAQI
18th Oct 20255811 AMAQI
18th Oct 20255612 PMAQI
12 PM18th Oct 2025591 PMAQI
18th Oct 2025622 PMAQI
18th Oct 2025573 PMAQI
18th Oct 2025564 PMAQI
18th Oct 2025585 PMAQI
18th Oct 2025626 PMAQI
6 PM18th Oct 2025607 PMAQI
18th Oct 2025608 PMAQI
18th Oct 2025629 PMAQI
18th Oct 20256210 PMAQI
18th Oct 20255911 PMAQI
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
9 AM - 12 PM
63AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
3 PM - 5 PM
56AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 12 PM (Avg. 63), while the lowest AQI was between 3 PM to 5 PM (Avg. 56).
Night time
Avg. Highest Time
9 PM - 10 PM
66AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM - 7 PM
61AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 10 PM (Avg. 66), while the lowest AQI was between 2 AM to 7 PM (Avg. 61).
2025 Days Vs Air Quality
Upper Peirce, Central Water Catchment, Central Region, Singapore
2025
33%
96
67%
194
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Good
96 DaysModerate
194 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 33%
Health Risk Level:
High
In 2025, 33% of 291 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
Upper Peirce, 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
48AQI
2nd January 2025
56AQI
56AQI
3rd January 2025
54AQI
54AQI
4th January 2025
49AQI
49AQI
5th January 2025
49AQI
49AQI
6th January 2025
49AQI
49AQI
7th January 2025
56AQI
56AQI
8th January 2025
55AQI
55AQI
9th January 2025
60AQI
60AQI
10th January 2025
51AQI
51AQI
11th January 2025
40AQI
40AQI
12th January 2025
41AQI
41AQI
13th January 2025
39AQI
39AQI
14th January 2025
44AQI
44AQI
15th January 2025
72AQI
72AQI
16th January 2025
47AQI
47AQI
17th January 2025
46AQI
46AQI
18th January 2025
46AQI
46AQI
19th January 2025
48AQI
48AQI
20th January 2025
49AQI
49AQI
21st January 2025
50AQI
50AQI
22nd January 2025
58AQI
58AQI
23rd January 2025
50AQI
50AQI
24th January 2025
57AQI
57AQI
25th January 2025
50AQI
50AQI
26th January 2025
51AQI
51AQI
27th January 2025
44AQI
44AQI
28th January 2025
57AQI
57AQI
29th January 2025
53AQI
53AQI
30th January 2025
55AQI
55AQI
31st January 2025
54AQI
54AQI
1st February 2025
56AQI
56AQI
2nd February 2025
59AQI
59AQI
3rd February 2025
69AQI
69AQI
4th February 2025
50AQI
50AQI
5th February 2025
50AQI
50AQI
6th February 2025
59AQI
59AQI
7th February 2025
53AQI
53AQI
8th February 2025
54AQI
54AQI
9th February 2025
51AQI
51AQI
10th February 2025
50AQI
50AQI
11th February 2025
45AQI
45AQI
12th February 2025
55AQI
55AQI
13th February 2025
55AQI
55AQI
14th February 2025
48AQI
48AQI
15th February 2025
55AQI
55AQI
16th February 2025
49AQI
49AQI
17th February 2025
51AQI
51AQI
18th February 2025
41AQI
41AQI
19th February 2025
50AQI
50AQI
20th February 2025
51AQI
51AQI
21st February 2025
50AQI
50AQI
22nd February 2025
47AQI
47AQI
23rd February 2025
43AQI
43AQI
24th February 2025
40AQI
40AQI
25th February 2025
45AQI
45AQI
26th February 2025
49AQI
49AQI
27th February 2025
46AQI
46AQI
28th February 2025
50AQI
50AQI
1st March 2025
51AQI
51AQI
2nd March 2025
46AQI
46AQI
3rd March 2025
53AQI
53AQI
4th March 2025
52AQI
52AQI
5th March 2025
62AQI
62AQI
6th March 2025
41AQI
41AQI
7th March 2025
52AQI
52AQI
8th March 2025
47AQI
47AQI
9th March 2025
47AQI
47AQI
10th March 2025
41AQI
41AQI
11th March 2025
42AQI
42AQI
12th March 2025
39AQI
39AQI
13th March 2025
46AQI
46AQI
14th March 2025
38AQI
38AQI
15th March 2025
44AQI
44AQI
16th March 2025
39AQI
39AQI
17th March 2025
39AQI
39AQI
18th March 2025
46AQI
46AQI
19th March 2025
46AQI
46AQI
20th March 2025
41AQI
41AQI
21st March 2025
59AQI
59AQI
22nd March 2025
48AQI
48AQI
23rd March 2025
43AQI
43AQI
24th March 2025
54AQI
54AQI
25th March 2025
71AQI
71AQI
26th March 2025
79AQI
79AQI
27th March 2025
74AQI
74AQI
28th March 2025
61AQI
61AQI
29th March 2025
72AQI
72AQI
30th March 2025
61AQI
61AQI
31st March 2025
63AQI
63AQI
1st April 2025
61AQI
61AQI
2nd April 2025
48AQI
48AQI
3rd April 2025
43AQI
43AQI
4th April 2025
51AQI
51AQI
5th April 2025
45AQI
45AQI
6th April 2025
43AQI
43AQI
7th April 2025
37AQI
37AQI
8th April 2025
47AQI
47AQI
9th April 2025
38AQI
38AQI
10th April 2025
54AQI
54AQI
11th April 2025
39AQI
39AQI
12th April 2025
43AQI
43AQI
13th April 2025
38AQI
38AQI
14th April 2025
43AQI
43AQI
15th April 2025
42AQI
42AQI
16th April 2025
55AQI
55AQI
17th April 2025
46AQI
46AQI
18th April 2025
56AQI
56AQI
19th April 2025
43AQI
43AQI
20th April 2025
46AQI
46AQI
21st April 2025
46AQI
46AQI
22nd April 2025
53AQI
53AQI
23rd April 2025
54AQI
54AQI
24th April 2025
63AQI
63AQI
25th April 2025
62AQI
62AQI
26th April 2025
54AQI
54AQI
27th April 2025
54AQI
54AQI
28th April 2025
53AQI
53AQI
29th April 2025
56AQI
56AQI
30th April 2025
44AQI
44AQI
1st May 2025
53AQI
53AQI
2nd May 2025
58AQI
58AQI
3rd May 2025
51AQI
51AQI
4th May 2025
47AQI
47AQI
5th May 2025
53AQI
53AQI
6th May 2025
52AQI
52AQI
7th May 2025
57AQI
57AQI
8th May 2025
57AQI
57AQI
9th May 2025
54AQI
54AQI
10th May 2025
62AQI
62AQI
11th May 2025
48AQI
48AQI
12th May 2025
55AQI
55AQI
13th May 2025
56AQI
56AQI
14th May 2025
56AQI
56AQI
15th May 2025
57AQI
57AQI
16th May 2025
55AQI
55AQI
17th May 2025
54AQI
54AQI
18th May 2025
45AQI
45AQI
19th May 2025
51AQI
51AQI
20th May 2025
52AQI
52AQI
21st May 2025
53AQI
53AQI
22nd May 2025
56AQI
56AQI
23rd May 2025
48AQI
48AQI
24th May 2025
51AQI
51AQI
25th May 2025
51AQI
51AQI
26th May 2025
49AQI
49AQI
27th May 2025
53AQI
53AQI
28th May 2025
52AQI
52AQI
29th May 2025
52AQI
52AQI
30th May 2025
55AQI
55AQI
31st May 2025
54AQI
54AQI
1st June 2025
51AQI
51AQI
2nd June 2025
52AQI
52AQI
3rd June 2025
55AQI
55AQI
4th June 2025
59AQI
59AQI
5th June 2025
58AQI
58AQI
6th June 2025
46AQI
46AQI
7th June 2025
47AQI
47AQI
8th June 2025
43AQI
43AQI
9th June 2025
53AQI
53AQI
10th June 2025
42AQI
42AQI
11th June 2025
47AQI
47AQI
12th June 2025
54AQI
54AQI
13th June 2025
47AQI
47AQI
14th June 2025
45AQI
45AQI
15th June 2025
40AQI
40AQI
16th June 2025
42AQI
42AQI
17th June 2025
48AQI
48AQI
18th June 2025
46AQI
46AQI
19th June 2025
47AQI
47AQI
20th June 2025
52AQI
52AQI
21st June 2025
58AQI
58AQI
22nd June 2025
70AQI
70AQI
23rd June 2025
63AQI
63AQI
24th June 2025
58AQI
58AQI
25th June 2025
56AQI
56AQI
26th June 2025
56AQI
56AQI
27th June 2025
61AQI
61AQI
28th June 2025
59AQI
59AQI
29th June 2025
54AQI
54AQI
30th June 2025
56AQI
56AQI
1st July 2025
54AQI
54AQI
2nd July 2025
54AQI
54AQI
3rd July 2025
58AQI
58AQI
4th July 2025
55AQI
55AQI
5th July 2025
56AQI
56AQI
6th July 2025
54AQI
54AQI
7th July 2025
51AQI
51AQI
8th July 2025
54AQI
54AQI
9th July 2025
53AQI
53AQI
10th July 2025
53AQI
53AQI
11th July 2025
55AQI
55AQI
12th July 2025
54AQI
54AQI
13th July 2025
54AQI
54AQI
14th July 2025
55AQI
55AQI
15th July 2025
54AQI
54AQI
16th July 2025
56AQI
56AQI
17th July 2025
55AQI
55AQI
18th July 2025
57AQI
57AQI
19th July 2025
59AQI
59AQI
20th July 2025
59AQI
59AQI
21st July 2025
60AQI
60AQI
22nd July 2025
61AQI
61AQI
23rd July 2025
68AQI
68AQI
24th July 2025
64AQI
64AQI
25th July 2025
62AQI
62AQI
26th July 2025
58AQI
58AQI
27th July 2025
56AQI
56AQI
28th July 2025
58AQI
58AQI
29th July 2025
61AQI
61AQI
30th July 2025
65AQI
65AQI
31st July 2025
59AQI
59AQI
1st August 2025
57AQI
57AQI
2nd August 2025
56AQI
56AQI
3rd August 2025
55AQI
55AQI
4th August 2025
56AQI
56AQI
5th August 2025
53AQI
53AQI
6th August 2025
55AQI
55AQI
7th August 2025
61AQI
61AQI
8th August 2025
63AQI
63AQI
9th August 2025
60AQI
60AQI
10th August 2025
61AQI
61AQI
11th August 2025
59AQI
59AQI
12th August 2025
61AQI
61AQI
13th August 2025
57AQI
57AQI
14th August 2025
57AQI
57AQI
15th August 2025
55AQI
55AQI
16th August 2025
59AQI
59AQI
17th August 2025
57AQI
57AQI
18th August 2025
57AQI
57AQI
19th August 2025
57AQI
57AQI
20th August 2025
59AQI
59AQI
21st August 2025
59AQI
59AQI
22nd August 2025
63AQI
63AQI
23rd August 2025
62AQI
62AQI
24th August 2025
60AQI
60AQI
25th August 2025
56AQI
56AQI
26th August 2025
59AQI
59AQI
27th August 2025
66AQI
66AQI
28th August 2025
61AQI
61AQI
29th August 2025
66AQI
66AQI
30th August 2025
59AQI
59AQI
31st August 2025
59AQI
59AQI
1st September 2025
54AQI
54AQI
2nd September 2025
52AQI
52AQI
3rd September 2025
53AQI
53AQI
4th September 2025
47AQI
47AQI
5th September 2025
46AQI
46AQI
6th September 2025
51AQI
51AQI
7th September 2025
49AQI
49AQI
8th September 2025
54AQI
54AQI
9th September 2025
51AQI
51AQI
10th September 2025
54AQI
54AQI
11th September 2025
52AQI
52AQI
12th September 2025
48AQI
48AQI
13th September 2025
45AQI
45AQI
14th September 2025
54AQI
54AQI
15th September 2025
50AQI
50AQI
16th September 2025
57AQI
57AQI
17th September 2025
46AQI
46AQI
18th September 2025
53AQI
53AQI
19th September 2025
54AQI
54AQI
20th September 2025
56AQI
56AQI
21st September 2025
49AQI
49AQI
22nd September 2025
49AQI
49AQI
23rd September 2025
55AQI
55AQI
24th September 2025
59AQI
59AQI
25th September 2025
61AQI
61AQI
26th September 2025
85AQI
85AQI
27th September 2025
70AQI
70AQI
28th September 2025
68AQI
68AQI
29th September 2025
43AQI
43AQI
30th September 2025
45AQI
45AQI
1st October 2025
43AQI
43AQI
2nd October 2025
57AQI
57AQI
3rd October 2025
58AQI
58AQI
4th October 2025
59AQI
59AQI
5th October 2025
71AQI
71AQI
6th October 2025
69AQI
69AQI
7th October 2025
78AQI
78AQI
8th October 2025
72AQI
72AQI
9th October 2025
64AQI
64AQI
10th October 2025
59AQI
59AQI
11th October 2025
69AQI
69AQI
12th October 2025
75AQI
75AQI
13th October 2025
70AQI
70AQI
14th October 2025
69AQI
69AQI
15th October 2025
64AQI
64AQI
16th October 2025
63AQI
63AQI
17th October 2025
70AQI
70AQI
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
65AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202554AQI
17
14
16
12
17
14
17
13
5
26
12
18
31
31
11
19
1
16
96
194
Highest AQI recorded in
October65AQI
Lowest AQI recorded in
April49AQI
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
July61AQI
Lowest AQI recorded in
January40AQI
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
October80AQI
Lowest AQI recorded in
February29AQI
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
April59AQI
Lowest AQI recorded in
August32AQI
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
October59AQI
Lowest AQI recorded in
January37AQI
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
March53AQI
Lowest AQI recorded in
July35AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
54AQILeast Polluted Year Recorded
2020(Avg.)
44AQIUpper Peirce's annual 2025 AQI (54) shows an average percentage change of 14.07% (worsened AQI) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (47), 2024 (51).
