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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Mariano Marcos State University, Batac, Ilocos Norte, Philippines Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Mariano Marcos State University, Batac, Ilocos Norte, Philippines

2022
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
14th Aug 2026
68AQI
Lowest AQI recorded on
31st Aug 2022
14AQI

Same Day Analysis (16th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 52 of Moderate air quality on the same day.

Day & Night AQI Trend: 16th Aug - 17th Aug 2026

Mariano Marcos State University, Batac, Ilocos Norte, Philippines

AQI
Day
Night
.

5 AM16th Aug 2026

6 PM

4 AM17th Aug 2026

Day time
Avg. Highest Time
8AM16th Aug

56AQI

Avg. Lowest Time
6PM16th Aug

40AQI

Night time
Avg. Highest Time
9PM16th Aug

64AQI

Avg. Lowest Time
4AM17th Aug

36AQI

In the last 24 hours,

Mariano Marcos State University's AQI reached its highest point of 64 at 9 PM during the Night, while the lowest point, 36, was recorded at 4 AM during the Night between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Mariano Marcos State University, Batac, Ilocos Norte, Philippines

JulAug
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
Day
Night
19th Jul 2026645 AMAQI
19th Jul 2026676 AMAQI
19th Jul 2026747 AMAQI
19th Jul 2026818 AMAQI
19th Jul 2026699 AMAQI
19th Jul 20267110 AMAQI
19th Jul 20266811 AMAQI
19th Jul 20266012 PMAQI
19th Jul 2026491 PMAQI
19th Jul 2026492 PMAQI
19th Jul 2026333 PMAQI
19th Jul 2026294 PMAQI
19th Jul 2026265 PMAQI
19th Jul 2026216 PMAQI
19th Jul 2026247 PMAQI
19th Jul 2026268 PMAQI
19th Jul 2026279 PMAQI
19th Jul 20263210 PMAQI
19th Jul 20262911 PMAQI
20th Jul 20263012 AMAQI
20th Jul 2026361 AMAQI
20th Jul 2026592 AMAQI
20th Jul 2026553 AMAQI
20th Jul 2026544 AMAQI

28°C26/31°C

20th Jul 2026585 AMAQI
20th Jul 2026646 AMAQI
20th Jul 2026667 AMAQI
20th Jul 2026808 AMAQI
20th Jul 2026789 AMAQI
20th Jul 20266210 AMAQI
20th Jul 20267211 AMAQI
20th Jul 20265812 PMAQI
20th Jul 2026561 PMAQI
20th Jul 2026522 PMAQI
20th Jul 2026443 PMAQI
20th Jul 2026444 PMAQI
20th Jul 2026405 PMAQI
20th Jul 2026336 PMAQI
20th Jul 2026297 PMAQI
20th Jul 2026338 PMAQI
20th Jul 2026449 PMAQI
20th Jul 20265010 PMAQI
20th Jul 20265311 PMAQI
21st Jul 20265812 AMAQI
21st Jul 2026601 AMAQI
21st Jul 2026582 AMAQI
21st Jul 2026623 AMAQI
21st Jul 2026604 AMAQI

28°C26/30°C

21st Jul 2026605 AMAQI
21st Jul 2026666 AMAQI
21st Jul 2026737 AMAQI
21st Jul 2026728 AMAQI
21st Jul 2026829 AMAQI
21st Jul 20266210 AMAQI
21st Jul 20266712 PMAQI
21st Jul 2026641 PMAQI
21st Jul 2026682 PMAQI
21st Jul 2026623 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026555 PMAQI
21st Jul 2026936 PMAQI
21st Jul 2026567 PMAQI
21st Jul 2026608 PMAQI
21st Jul 2026689 PMAQI
21st Jul 20267210 PMAQI
21st Jul 20267411 PMAQI
22nd Jul 20268212 AMAQI
22nd Jul 2026761 AMAQI
22nd Jul 2026782 AMAQI
22nd Jul 2026743 AMAQI
22nd Jul 2026764 AMAQI

28°C26/30°C

22nd Jul 2026765 AMAQI
22nd Jul 2026806 AMAQI
22nd Jul 2026857 AMAQI
22nd Jul 2026838 AMAQI
22nd Jul 2026789 AMAQI
22nd Jul 20267010 AMAQI
22nd Jul 20266911 AMAQI
22nd Jul 20266212 PMAQI
22nd Jul 2026621 PMAQI
22nd Jul 2026602 PMAQI
22nd Jul 2026563 PMAQI
22nd Jul 2026514 PMAQI
22nd Jul 2026525 PMAQI
22nd Jul 2026516 PMAQI
22nd Jul 2026527 PMAQI
22nd Jul 2026608 PMAQI
22nd Jul 2026819 PMAQI
22nd Jul 20267010 PMAQI
22nd Jul 20266811 PMAQI
23rd Jul 20265512 AMAQI
23rd Jul 2026571 AMAQI
23rd Jul 2026572 AMAQI
23rd Jul 2026663 AMAQI
23rd Jul 2026804 AMAQI

28°C26/30°C

23rd Jul 2026745 AMAQI
23rd Jul 2026816 AMAQI
23rd Jul 2026847 AMAQI
23rd Jul 2026848 AMAQI
23rd Jul 2026829 AMAQI
23rd Jul 20267310 AMAQI
23rd Jul 20267611 AMAQI
23rd Jul 20267012 PMAQI
23rd Jul 2026711 PMAQI
23rd Jul 2026732 PMAQI
23rd Jul 2026673 PMAQI
23rd Jul 2026714 PMAQI
23rd Jul 2026685 PMAQI
23rd Jul 2026656 PMAQI
23rd Jul 2026647 PMAQI
23rd Jul 2026598 PMAQI
23rd Jul 2026599 PMAQI
23rd Jul 20265510 PMAQI
23rd Jul 20265011 PMAQI
24th Jul 20265112 AMAQI
24th Jul 2026531 AMAQI
24th Jul 2026502 AMAQI
24th Jul 2026513 AMAQI
24th Jul 2026524 AMAQI

28°C25/30°C

24th Jul 2026545 AMAQI
24th Jul 2026656 AMAQI
24th Jul 2026647 AMAQI
24th Jul 2026718 AMAQI
24th Jul 2026689 AMAQI
24th Jul 20266010 AMAQI
24th Jul 20264611 AMAQI
24th Jul 20262912 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026292 PMAQI
24th Jul 2026293 PMAQI
24th Jul 2026284 PMAQI
24th Jul 2026265 PMAQI
24th Jul 2026276 PMAQI
24th Jul 2026287 PMAQI
24th Jul 2026368 PMAQI
24th Jul 2026299 PMAQI
24th Jul 20263010 PMAQI
24th Jul 20263011 PMAQI
25th Jul 20262812 AMAQI
25th Jul 2026301 AMAQI
25th Jul 2026282 AMAQI
25th Jul 2026263 AMAQI
25th Jul 2026304 AMAQI

25°C23/26°C

25th Jul 2026265 AMAQI
25th Jul 2026256 AMAQI
25th Jul 2026317 AMAQI
25th Jul 2026528 AMAQI
25th Jul 2026519 AMAQI
25th Jul 20264810 AMAQI
25th Jul 20265511 AMAQI
25th Jul 20265512 PMAQI
25th Jul 2026531 PMAQI
25th Jul 2026482 PMAQI
25th Jul 2026383 PMAQI
25th Jul 2026224 PMAQI
25th Jul 2026305 PMAQI
25th Jul 2026316 PMAQI
25th Jul 2026367 PMAQI
25th Jul 2026338 PMAQI
25th Jul 2026329 PMAQI
25th Jul 20263610 PMAQI
25th Jul 20265011 PMAQI
26th Jul 20264012 AMAQI
26th Jul 2026401 AMAQI
26th Jul 2026362 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026444 AMAQI

27°C25/29°C

26th Jul 2026405 AMAQI
26th Jul 2026406 AMAQI
26th Jul 2026527 AMAQI
26th Jul 2026568 AMAQI
26th Jul 2026559 AMAQI
26th Jul 20263810 AMAQI
26th Jul 20263311 AMAQI
26th Jul 20263812 PMAQI
26th Jul 2026481 PMAQI
26th Jul 2026522 PMAQI
26th Jul 2026403 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026365 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026368 PMAQI
26th Jul 2026429 PMAQI
26th Jul 20265710 PMAQI
26th Jul 20267011 PMAQI
27th Jul 20266712 AMAQI
27th Jul 2026671 AMAQI
27th Jul 2026622 AMAQI
27th Jul 2026573 AMAQI
27th Jul 2026564 AMAQI

27°C25/29°C

27th Jul 2026585 AMAQI
27th Jul 2026626 AMAQI
27th Jul 2026587 AMAQI
27th Jul 2026628 AMAQI
27th Jul 2026579 AMAQI
27th Jul 20264410 AMAQI
27th Jul 20264011 AMAQI
27th Jul 20264212 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026382 PMAQI
27th Jul 2026363 PMAQI
27th Jul 2026384 PMAQI
27th Jul 2026445 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026317 PMAQI
27th Jul 2026408 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20264010 PMAQI
27th Jul 20263311 PMAQI
28th Jul 20265012 AMAQI
28th Jul 2026521 AMAQI
28th Jul 2026512 AMAQI
28th Jul 2026553 AMAQI
28th Jul 2026574 AMAQI

27°C25/29°C

28th Jul 2026605 AMAQI
28th Jul 2026636 AMAQI
28th Jul 2026707 AMAQI
28th Jul 2026708 AMAQI
28th Jul 2026729 AMAQI
28th Jul 20266210 AMAQI
28th Jul 20266011 AMAQI
28th Jul 20265512 PMAQI
28th Jul 2026561 PMAQI
28th Jul 2026562 PMAQI
28th Jul 2026533 PMAQI
28th Jul 2026544 PMAQI
28th Jul 2026555 PMAQI
28th Jul 2026576 PMAQI
28th Jul 2026757 PMAQI
28th Jul 2026768 PMAQI
28th Jul 2026769 PMAQI
28th Jul 20266910 PMAQI
28th Jul 20266411 PMAQI
29th Jul 20267512 AMAQI
29th Jul 2026801 AMAQI
29th Jul 2026782 AMAQI
29th Jul 2026763 AMAQI
29th Jul 2026704 AMAQI

27°C25/29°C

29th Jul 2026805 AMAQI
29th Jul 2026716 AMAQI
29th Jul 2026757 AMAQI
29th Jul 2026628 AMAQI
29th Jul 2026609 AMAQI
29th Jul 20266910 AMAQI
29th Jul 20267611 AMAQI
29th Jul 20265312 PMAQI
29th Jul 2026571 PMAQI
29th Jul 2026642 PMAQI
29th Jul 2026543 PMAQI
29th Jul 2026644 PMAQI
29th Jul 2026735 PMAQI
29th Jul 2026786 PMAQI
29th Jul 2026717 PMAQI
29th Jul 2026818 PMAQI
29th Jul 2026819 PMAQI
29th Jul 20267210 PMAQI
29th Jul 20268011 PMAQI
30th Jul 20268012 AMAQI
30th Jul 2026821 AMAQI
30th Jul 2026712 AMAQI
30th Jul 2026803 AMAQI
30th Jul 2026724 AMAQI

27°C25/29°C

30th Jul 2026685 AMAQI
30th Jul 2026706 AMAQI
30th Jul 2026687 AMAQI
30th Jul 2026728 AMAQI
30th Jul 2026789 AMAQI
30th Jul 20266910 AMAQI
30th Jul 20266711 AMAQI
30th Jul 20265912 PMAQI
30th Jul 2026591 PMAQI
30th Jul 2026652 PMAQI
30th Jul 2026583 PMAQI
30th Jul 2026624 PMAQI
30th Jul 2026645 PMAQI
30th Jul 2026656 PMAQI
30th Jul 2026767 PMAQI
30th Jul 2026688 PMAQI
30th Jul 2026749 PMAQI
30th Jul 20267210 PMAQI
30th Jul 20266711 PMAQI
31st Jul 20267612 AMAQI
31st Jul 2026711 AMAQI
31st Jul 2026672 AMAQI
31st Jul 2026663 AMAQI
31st Jul 2026744 AMAQI

27°C25/29°C

31st Jul 2026675 AMAQI
31st Jul 2026746 AMAQI
31st Jul 2026797 AMAQI
31st Jul 2026818 AMAQI
31st Jul 2026769 AMAQI
31st Jul 20267810 AMAQI
31st Jul 20268111 AMAQI
31st Jul 20266312 PMAQI
31st Jul 2026681 PMAQI
31st Jul 2026622 PMAQI
31st Jul 2026753 PMAQI
31st Jul 2026664 PMAQI
31st Jul 2026655 PMAQI
31st Jul 2026706 PMAQI
31st Jul 2026807 PMAQI
31st Jul 2026748 PMAQI
31st Jul 2026679 PMAQI
31st Jul 20266710 PMAQI
31st Jul 20267411 PMAQI
1st Aug 20268212 AMAQI
1st Aug 2026801 AMAQI
1st Aug 2026712 AMAQI
1st Aug 2026713 AMAQI
1st Aug 2026704 AMAQI

27°C26/29°C

1st Aug 2026645 AMAQI
1st Aug 2026586 AMAQI
1st Aug 2026607 AMAQI
1st Aug 2026688 AMAQI
1st Aug 2026699 AMAQI
1st Aug 20265710 AMAQI
1st Aug 20264611 AMAQI
1st Aug 20264212 PMAQI
1st Aug 2026421 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026363 PMAQI
1st Aug 2026334 PMAQI
1st Aug 2026335 PMAQI
1st Aug 2026366 PMAQI
1st Aug 2026427 PMAQI
1st Aug 2026558 PMAQI
1st Aug 2026549 PMAQI
1st Aug 20265210 PMAQI
1st Aug 20266011 PMAQI
2nd Aug 20267412 AMAQI
2nd Aug 2026681 AMAQI
2nd Aug 2026602 AMAQI
2nd Aug 2026653 AMAQI
2nd Aug 2026644 AMAQI

27°C25/29°C

2nd Aug 2026685 AMAQI
2nd Aug 2026696 AMAQI
2nd Aug 2026657 AMAQI
2nd Aug 2026748 AMAQI
2nd Aug 2026769 AMAQI
2nd Aug 20266910 AMAQI
2nd Aug 20266311 AMAQI
2nd Aug 20266012 PMAQI
2nd Aug 2026631 PMAQI
2nd Aug 2026662 PMAQI
2nd Aug 2026583 PMAQI
2nd Aug 2026604 PMAQI
2nd Aug 2026565 PMAQI
2nd Aug 2026586 PMAQI
2nd Aug 2026687 PMAQI
2nd Aug 2026768 PMAQI
2nd Aug 2026789 PMAQI
2nd Aug 20268210 PMAQI
2nd Aug 20267311 PMAQI
3rd Aug 20266412 AMAQI
3rd Aug 2026601 AMAQI
3rd Aug 2026572 AMAQI
3rd Aug 2026573 AMAQI
3rd Aug 2026564 AMAQI

27°C25/30°C

3rd Aug 2026535 AMAQI
3rd Aug 2026506 AMAQI
3rd Aug 2026447 AMAQI
3rd Aug 2026408 AMAQI
3rd Aug 2026389 AMAQI
3rd Aug 20264210 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20263012 PMAQI
3rd Aug 2026321 PMAQI
3rd Aug 2026422 PMAQI
3rd Aug 2026423 PMAQI
3rd Aug 2026384 PMAQI
3rd Aug 2026405 PMAQI
3rd Aug 2026446 PMAQI
3rd Aug 2026487 PMAQI
3rd Aug 2026508 PMAQI
3rd Aug 2026609 PMAQI
3rd Aug 20266310 PMAQI
3rd Aug 20265611 PMAQI
4th Aug 20264212 AMAQI
4th Aug 2026261 AMAQI
4th Aug 2026272 AMAQI
4th Aug 2026293 AMAQI
4th Aug 2026334 AMAQI

27°C26/30°C

4th Aug 2026255 AMAQI
4th Aug 2026246 AMAQI
4th Aug 2026277 AMAQI
4th Aug 2026328 AMAQI
4th Aug 2026309 AMAQI
4th Aug 20265010 AMAQI
4th Aug 20264211 AMAQI
4th Aug 20262912 PMAQI
4th Aug 2026291 PMAQI
4th Aug 2026272 PMAQI
4th Aug 2026313 PMAQI
4th Aug 2026304 PMAQI
4th Aug 2026345 PMAQI
4th Aug 2026326 PMAQI
4th Aug 2026327 PMAQI
4th Aug 2026328 PMAQI
4th Aug 2026349 PMAQI
4th Aug 20263010 PMAQI
4th Aug 20263311 PMAQI
5th Aug 20263312 AMAQI
5th Aug 2026291 AMAQI
5th Aug 2026282 AMAQI
5th Aug 2026283 AMAQI
5th Aug 2026254 AMAQI

27°C25/29°C

5th Aug 2026255 AMAQI
5th Aug 2026296 AMAQI
5th Aug 2026297 AMAQI
5th Aug 2026328 AMAQI
5th Aug 2026329 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20263811 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026461 PMAQI
5th Aug 2026332 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026304 PMAQI
5th Aug 2026335 PMAQI
5th Aug 2026306 PMAQI
5th Aug 2026327 PMAQI
5th Aug 2026338 PMAQI
5th Aug 2026559 PMAQI
5th Aug 20265610 PMAQI
5th Aug 20265111 PMAQI
6th Aug 20267812 AMAQI
6th Aug 2026741 AMAQI
6th Aug 2026732 AMAQI
6th Aug 2026643 AMAQI
6th Aug 2026424 AMAQI

27°C25/30°C

6th Aug 2026335 AMAQI
6th Aug 2026316 AMAQI
6th Aug 2026427 AMAQI
6th Aug 2026538 AMAQI
6th Aug 2026519 AMAQI
6th Aug 20263310 AMAQI
6th Aug 20263811 AMAQI
6th Aug 20263812 PMAQI
6th Aug 2026311 PMAQI
6th Aug 2026422 PMAQI
6th Aug 2026483 PMAQI
6th Aug 2026484 PMAQI
6th Aug 2026335 PMAQI
6th Aug 2026266 PMAQI
6th Aug 2026287 PMAQI
6th Aug 2026408 PMAQI
6th Aug 2026509 PMAQI
6th Aug 20263810 PMAQI
6th Aug 20264411 PMAQI
7th Aug 20262812 AMAQI
7th Aug 2026281 AMAQI
7th Aug 2026362 AMAQI
7th Aug 2026383 AMAQI
7th Aug 2026404 AMAQI

27°C25/29°C

7th Aug 2026485 AMAQI
7th Aug 2026486 AMAQI
7th Aug 2026527 AMAQI
7th Aug 2026368 AMAQI
7th Aug 2026369 AMAQI
7th Aug 20264010 AMAQI
7th Aug 20264211 AMAQI
7th Aug 20264012 PMAQI
7th Aug 2026321 PMAQI
7th Aug 2026232 PMAQI
7th Aug 2026263 PMAQI
7th Aug 2026304 PMAQI
7th Aug 2026315 PMAQI
7th Aug 2026306 PMAQI
7th Aug 2026307 PMAQI
7th Aug 2026328 PMAQI
7th Aug 2026429 PMAQI
7th Aug 20265310 PMAQI
7th Aug 20265611 PMAQI
8th Aug 20266212 AMAQI
8th Aug 2026581 AMAQI
8th Aug 2026502 AMAQI
8th Aug 2026403 AMAQI
8th Aug 2026404 AMAQI

27°C25/29°C

8th Aug 2026385 AMAQI
8th Aug 2026446 AMAQI
8th Aug 2026567 AMAQI
8th Aug 2026508 AMAQI
8th Aug 2026389 AMAQI
8th Aug 20264410 AMAQI
8th Aug 20264011 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026251 PMAQI
8th Aug 2026292 PMAQI
8th Aug 2026263 PMAQI
8th Aug 2026274 PMAQI
8th Aug 2026285 PMAQI
8th Aug 2026266 PMAQI
8th Aug 2026407 PMAQI
8th Aug 2026558 PMAQI
8th Aug 2026559 PMAQI
8th Aug 20265710 PMAQI
8th Aug 20265811 PMAQI
9th Aug 20265212 AMAQI
9th Aug 2026311 AMAQI
9th Aug 2026362 AMAQI
9th Aug 2026333 AMAQI
9th Aug 2026274 AMAQI

27°C26/28°C

9th Aug 2026255 AMAQI
9th Aug 2026296 AMAQI
9th Aug 2026487 AMAQI
9th Aug 2026628 AMAQI
9th Aug 2026559 AMAQI
9th Aug 20265110 AMAQI
9th Aug 20265011 AMAQI
9th Aug 20264412 PMAQI
9th Aug 2026581 PMAQI
9th Aug 2026642 PMAQI
9th Aug 2026663 PMAQI
9th Aug 2026594 PMAQI
9th Aug 2026605 PMAQI
9th Aug 2026566 PMAQI
9th Aug 2026547 PMAQI
9th Aug 2026408 PMAQI
9th Aug 2026369 PMAQI
9th Aug 20263210 PMAQI
9th Aug 20263011 PMAQI
10th Aug 20263012 AMAQI
10th Aug 2026331 AMAQI
10th Aug 2026302 AMAQI
10th Aug 2026303 AMAQI
10th Aug 2026284 AMAQI

27°C27/27°C

10th Aug 2026365 AMAQI
10th Aug 2026326 AMAQI
10th Aug 2026307 AMAQI
10th Aug 2026308 AMAQI
10th Aug 2026449 AMAQI
10th Aug 20264710 AMAQI
10th Aug 20265611 AMAQI
10th Aug 20265312 PMAQI
10th Aug 2026521 PMAQI
10th Aug 2026522 PMAQI
10th Aug 2026443 PMAQI
10th Aug 2026494 PMAQI
10th Aug 2026445 PMAQI
10th Aug 2026296 PMAQI
10th Aug 2026387 PMAQI
10th Aug 2026468 PMAQI
10th Aug 2026659 PMAQI
10th Aug 20265910 PMAQI
10th Aug 20264911 PMAQI
11th Aug 20265112 AMAQI
11th Aug 2026491 AMAQI
11th Aug 2026512 AMAQI
11th Aug 2026513 AMAQI
11th Aug 2026504 AMAQI

27°C26/28°C

11th Aug 2026465 AMAQI
11th Aug 2026346 AMAQI
11th Aug 2026287 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026339 AMAQI
11th Aug 20263810 AMAQI
11th Aug 20263011 AMAQI
11th Aug 20262712 PMAQI
11th Aug 2026281 PMAQI
11th Aug 2026232 PMAQI
11th Aug 2026293 PMAQI
11th Aug 2026314 PMAQI
11th Aug 2026315 PMAQI
11th Aug 2026326 PMAQI
11th Aug 2026307 PMAQI
11th Aug 2026368 PMAQI
11th Aug 2026389 PMAQI
11th Aug 20263610 PMAQI
11th Aug 20263811 PMAQI
12th Aug 20264812 AMAQI
12th Aug 2026541 AMAQI
12th Aug 2026592 AMAQI
12th Aug 2026563 AMAQI
12th Aug 2026524 AMAQI

27°C26/29°C

12th Aug 2026515 AMAQI
12th Aug 2026526 AMAQI
12th Aug 2026487 AMAQI
12th Aug 2026488 AMAQI
12th Aug 2026549 AMAQI
12th Aug 20264210 AMAQI
12th Aug 20263311 AMAQI
12th Aug 20264212 PMAQI
12th Aug 2026421 PMAQI
12th Aug 2026492 PMAQI
12th Aug 2026523 PMAQI
12th Aug 2026464 PMAQI
12th Aug 2026505 PMAQI
12th Aug 2026626 PMAQI
12th Aug 2026747 PMAQI
12th Aug 2026558 PMAQI
12th Aug 2026429 PMAQI
12th Aug 20265710 PMAQI
12th Aug 20264611 PMAQI
13th Aug 20264012 AMAQI
13th Aug 2026361 AMAQI
13th Aug 2026402 AMAQI
13th Aug 2026503 AMAQI
13th Aug 2026604 AMAQI

27°C26/29°C

13th Aug 2026525 AMAQI
13th Aug 2026546 AMAQI
13th Aug 2026577 AMAQI
13th Aug 2026708 AMAQI
13th Aug 2026769 AMAQI
13th Aug 20267210 AMAQI
13th Aug 20267511 AMAQI
13th Aug 20266312 PMAQI
13th Aug 2026671 PMAQI
13th Aug 2026562 PMAQI
13th Aug 2026293 PMAQI
13th Aug 2026334 PMAQI
13th Aug 2026405 PMAQI
13th Aug 2026446 PMAQI
13th Aug 2026467 PMAQI
13th Aug 2026578 PMAQI
13th Aug 2026699 PMAQI
13th Aug 20267610 PMAQI
13th Aug 20267811 PMAQI
14th Aug 20268412 AMAQI
14th Aug 2026781 AMAQI
14th Aug 2026762 AMAQI
14th Aug 2026573 AMAQI
14th Aug 2026544 AMAQI

28°C26/30°C

14th Aug 2026465 AMAQI
14th Aug 2026556 AMAQI
14th Aug 2026557 AMAQI
14th Aug 2026608 AMAQI
14th Aug 2026629 AMAQI
14th Aug 20267210 AMAQI
14th Aug 20267111 AMAQI
14th Aug 20265212 PMAQI
14th Aug 2026651 PMAQI
14th Aug 2026622 PMAQI
14th Aug 2026723 PMAQI
14th Aug 2026744 PMAQI
14th Aug 2026765 PMAQI
14th Aug 2026676 PMAQI
14th Aug 2026687 PMAQI
14th Aug 2026748 PMAQI
14th Aug 2026879 PMAQI
14th Aug 20268610 PMAQI
14th Aug 20268111 PMAQI
15th Aug 20268012 AMAQI
15th Aug 2026811 AMAQI
15th Aug 2026782 AMAQI
15th Aug 2026743 AMAQI
15th Aug 2026744 AMAQI

27°C26/30°C

15th Aug 2026845 AMAQI
15th Aug 2026766 AMAQI
15th Aug 2026727 AMAQI
15th Aug 2026748 AMAQI
15th Aug 2026749 AMAQI
15th Aug 20267110 AMAQI
15th Aug 20266411 AMAQI
15th Aug 20265512 PMAQI
15th Aug 2026511 PMAQI
15th Aug 2026532 PMAQI
15th Aug 2026493 PMAQI
15th Aug 2026484 PMAQI
15th Aug 2026425 PMAQI
15th Aug 2026446 PMAQI
15th Aug 2026487 PMAQI
15th Aug 2026488 PMAQI
15th Aug 2026519 PMAQI
15th Aug 20265310 PMAQI
15th Aug 20265611 PMAQI
16th Aug 20265912 AMAQI
16th Aug 2026601 AMAQI
16th Aug 2026572 AMAQI
16th Aug 2026553 AMAQI
16th Aug 2026544 AMAQI

27°C25/28°C

16th Aug 2026555 AMAQI
16th Aug 2026526 AMAQI
16th Aug 2026527 AMAQI
16th Aug 2026568 AMAQI
16th Aug 2026529 AMAQI
16th Aug 20264610 AMAQI
16th Aug 20264011 AMAQI
16th Aug 20264212 PMAQI
16th Aug 2026401 PMAQI
16th Aug 2026402 PMAQI
16th Aug 2026463 PMAQI
16th Aug 2026514 PMAQI
16th Aug 2026525 PMAQI
16th Aug 2026406 PMAQI
16th Aug 2026497 PMAQI
16th Aug 2026628 PMAQI
16th Aug 2026649 PMAQI
16th Aug 20266410 PMAQI
16th Aug 20266011 PMAQI
17th Aug 20266212 AMAQI
17th Aug 2026561 AMAQI
17th Aug 2026552 AMAQI
17th Aug 2026383 AMAQI
17th Aug 2026364 AMAQI

26°C25/27°C

17th Aug 2026385 AMAQI
5 AM
17th Aug 2026406 AMAQI
17th Aug 2026487 AMAQI
17th Aug 2026538 AMAQI
17th Aug 2026609 AMAQI
17th Aug 20266710 AMAQI
17th Aug 20266511 AMAQI
11 AM
17th Aug 20266912 PMAQI
17th Aug 2026681 PMAQI
17th Aug 2026622 PMAQI
17th Aug 2026493 PMAQI
17th Aug 2026404 PMAQI
17th Aug 2026425 PMAQI
17th Aug 2026516 PMAQI
6 PM
17th Aug 2026487 PMAQI
17th Aug 2026608 PMAQI
17th Aug 2026609 PMAQI
17th Aug 20265810 PMAQI
17th Aug 20266911 PMAQI
11 PM
4 AM

24°C24/25°C

Day time
Avg. Highest Time
8 AM - 9 AM

60AQI

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

45AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 9 AM (Avg. 60), while the lowest AQI was between 3 PM to 6 PM (Avg. 45).
Night time
Avg. Highest Time
12 AM - 4 AM

54AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
7 PM

48AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 54), while the lowest AQI was between 7 PM to 7 PM (Avg. 48).

2026 Days Vs Air Quality

Mariano Marcos State University, Batac, Ilocos Norte, Philippines

2026

17%

38

80%

179

4%

8

Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)

Good
38 Days
Moderate
179 Days
Poor
8 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 17%

Health Risk Level:

Extreme

In 2026, 17% of 229 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.

Annual Air Quality Insights

Mariano Marcos State University, Batac, Ilocos Norte, Philippines

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
79AQI (US)
2nd January 2026
54AQI (US)
3rd January 2026
30AQI (US)
4th January 2026
37AQI (US)
5th January 2026
50AQI (US)
6th January 2026
69AQI (US)
7th January 2026
61AQI (US)
8th January 2026
59AQI (US)
9th January 2026
42AQI (US)
10th January 2026
41AQI (US)
11th January 2026
68AQI (US)
12th January 2026
28AQI (US)
13th January 2026
56AQI (US)
14th January 2026
48AQI (US)
15th January 2026
41AQI (US)
16th January 2026
60AQI (US)
17th January 2026
66AQI (US)
18th January 2026
71AQI (US)
19th January 2026
75AQI (US)
20th January 2026
67AQI (US)
21st January 2026
48AQI (US)
22nd January 2026
44AQI (US)
23rd January 2026
60AQI (US)
24th January 2026
59AQI (US)
25th January 2026
61AQI (US)
26th January 2026
72AQI (US)
27th January 2026
53AQI (US)
28th January 2026
64AQI (US)
29th January 2026
82AQI (US)
30th January 2026
78AQI (US)
31st January 2026
76AQI (US)
1st February 2026
74AQI (US)
2nd February 2026
62AQI (US)
3rd February 2026
63AQI (US)
4th February 2026
77AQI (US)
5th February 2026
64AQI (US)
6th February 2026
62AQI (US)
7th February 2026
53AQI (US)
8th February 2026
54AQI (US)
9th February 2026
60AQI (US)
10th February 2026
58AQI (US)
11th February 2026
60AQI (US)
12th February 2026
56AQI (US)
13th February 2026
63AQI (US)
14th February 2026
76AQI (US)
15th February 2026
59AQI (US)
16th February 2026
64AQI (US)
17th February 2026
64AQI (US)
18th February 2026
72AQI (US)
19th February 2026
82AQI (US)
20th February 2026
88AQI (US)
21st February 2026
102AQI (US)
22nd February 2026
95AQI (US)
23rd February 2026
85AQI (US)
24th February 2026
104AQI (US)
25th February 2026
103AQI (US)
26th February 2026
82AQI (US)
27th February 2026
80AQI (US)
28th February 2026
84AQI (US)
1st March 2026
79AQI (US)
2nd March 2026
75AQI (US)
3rd March 2026
75AQI (US)
4th March 2026
81AQI (US)
5th March 2026
70AQI (US)
6th March 2026
90AQI (US)
7th March 2026
81AQI (US)
8th March 2026
78AQI (US)
9th March 2026
72AQI (US)
10th March 2026
82AQI (US)
11th March 2026
92AQI (US)
12th March 2026
85AQI (US)
13th March 2026
67AQI (US)
14th March 2026
87AQI (US)
15th March 2026
86AQI (US)
16th March 2026
77AQI (US)
17th March 2026
87AQI (US)
18th March 2026
92AQI (US)
19th March 2026
74AQI (US)
20th March 2026
80AQI (US)
21st March 2026
76AQI (US)
22nd March 2026
87AQI (US)
23rd March 2026
89AQI (US)
24th March 2026
84AQI (US)
25th March 2026
85AQI (US)
26th March 2026
80AQI (US)
27th March 2026
84AQI (US)
28th March 2026
82AQI (US)
29th March 2026
89AQI (US)
30th March 2026
92AQI (US)
31st March 2026
84AQI (US)
1st April 2026
79AQI (US)
2nd April 2026
79AQI (US)
3rd April 2026
77AQI (US)
4th April 2026
74AQI (US)
5th April 2026
97AQI (US)
6th April 2026
93AQI (US)
7th April 2026
85AQI (US)
8th April 2026
93AQI (US)
9th April 2026
86AQI (US)
10th April 2026
73AQI (US)
11th April 2026
103AQI (US)
12th April 2026
91AQI (US)
13th April 2026
89AQI (US)
14th April 2026
92AQI (US)
15th April 2026
83AQI (US)
16th April 2026
94AQI (US)
17th April 2026
18th April 2026
108AQI (US)
19th April 2026
103AQI (US)
20th April 2026
107AQI (US)
21st April 2026
101AQI (US)
22nd April 2026
23rd April 2026
79AQI (US)
24th April 2026
88AQI (US)
25th April 2026
89AQI (US)
26th April 2026
83AQI (US)
27th April 2026
83AQI (US)
28th April 2026
74AQI (US)
29th April 2026
74AQI (US)
30th April 2026
68AQI (US)
1st May 2026
73AQI (US)
2nd May 2026
70AQI (US)
3rd May 2026
68AQI (US)
4th May 2026
60AQI (US)
5th May 2026
77AQI (US)
6th May 2026
70AQI (US)
7th May 2026
76AQI (US)
8th May 2026
77AQI (US)
9th May 2026
10th May 2026
62AQI (US)
11th May 2026
57AQI (US)
12th May 2026
77AQI (US)
13th May 2026
83AQI (US)
14th May 2026
77AQI (US)
15th May 2026
87AQI (US)
16th May 2026
92AQI (US)
17th May 2026
69AQI (US)
18th May 2026
51AQI (US)
19th May 2026
52AQI (US)
20th May 2026
63AQI (US)
21st May 2026
53AQI (US)
22nd May 2026
56AQI (US)
23rd May 2026
54AQI (US)
24th May 2026
55AQI (US)
25th May 2026
44AQI (US)
26th May 2026
58AQI (US)
27th May 2026
82AQI (US)
28th May 2026
86AQI (US)
29th May 2026
78AQI (US)
30th May 2026
62AQI (US)
31st May 2026
66AQI (US)
1st June 2026
60AQI (US)
2nd June 2026
57AQI (US)
3rd June 2026
53AQI (US)
4th June 2026
52AQI (US)
5th June 2026
54AQI (US)
6th June 2026
61AQI (US)
7th June 2026
52AQI (US)
8th June 2026
63AQI (US)
9th June 2026
55AQI (US)
10th June 2026
44AQI (US)
11th June 2026
68AQI (US)
12th June 2026
77AQI (US)
13th June 2026
77AQI (US)
14th June 2026
66AQI (US)
15th June 2026
69AQI (US)
16th June 2026
83AQI (US)
17th June 2026
79AQI (US)
18th June 2026
65AQI (US)
19th June 2026
59AQI (US)
20th June 2026
57AQI (US)
21st June 2026
63AQI (US)
22nd June 2026
69AQI (US)
23rd June 2026
63AQI (US)
24th June 2026
40AQI (US)
25th June 2026
30AQI (US)
26th June 2026
33AQI (US)
27th June 2026
32AQI (US)
28th June 2026
33AQI (US)
29th June 2026
46AQI (US)
30th June 2026
70AQI (US)
1st July 2026
39AQI (US)
2nd July 2026
57AQI (US)
3rd July 2026
72AQI (US)
4th July 2026
59AQI (US)
5th July 2026
54AQI (US)
6th July 2026
58AQI (US)
7th July 2026
77AQI (US)
8th July 2026
63AQI (US)
9th July 2026
57AQI (US)
10th July 2026
31AQI (US)
11th July 2026
32AQI (US)
12th July 2026
30AQI (US)
13th July 2026
30AQI (US)
14th July 2026
62AQI (US)
15th July 2026
65AQI (US)
16th July 2026
65AQI (US)
17th July 2026
60AQI (US)
18th July 2026
49AQI (US)
19th July 2026
47AQI (US)
20th July 2026
52AQI (US)
21st July 2026
66AQI (US)
22nd July 2026
69AQI (US)
23rd July 2026
68AQI (US)
24th July 2026
43AQI (US)
25th July 2026
37AQI (US)
26th July 2026
42AQI (US)
27th July 2026
48AQI (US)
28th July 2026
61AQI (US)
29th July 2026
71AQI (US)
30th July 2026
69AQI (US)
31st July 2026
72AQI (US)
1st August 2026
55AQI (US)
2nd August 2026
67AQI (US)
3rd August 2026
48AQI (US)
4th August 2026
32AQI (US)
5th August 2026
34AQI (US)
6th August 2026
45AQI (US)
7th August 2026
37AQI (US)
8th August 2026
42AQI (US)
9th August 2026
46AQI (US)
10th August 2026
42AQI (US)
11th August 2026
36AQI (US)
12th August 2026
51AQI (US)
13th August 2026
56AQI (US)
14th August 2026
68AQI (US)
15th August 2026
62AQI (US)
16th August 2026
52AQI (US)
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

58AQI (US)

73AQI (US)

82AQI (US)

87AQI (US)

68AQI (US)

58AQI (US)

55AQI (US)

48AQI (US)

No. of days

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

202667AQI (US)

10
21
25
3
31
23
5
1
29
7
23
11
20
9
7
38
179
8

Highest AQI (US) recorded in

April

87AQI (US)

Lowest AQI (US) recorded in

August

48AQI (US)

202556AQI (US)

31
28
3
28
5
25
18
13
24
6
28
3
22
9
27
3
31
13
17
6
25
146
219

Highest AQI (US) recorded in

January

74AQI (US)

Lowest AQI (US) recorded in

September

40AQI (US)

202440AQI (US)

16
9
3
30
31
31
28
1
29
2
14
16
31
188
53

Highest AQI (US) recorded in

December

70AQI (US)

Lowest AQI (US) recorded in

January

18AQI (US)

202324AQI (US)

11
1
28
12
3
3
1
3
10
3
31
101
5

Highest AQI (US) recorded in

April

40AQI (US)

Lowest AQI (US) recorded in

December

18AQI (US)

202222AQI (US)

6
2
8
11
1
22
12
2
7
69
2

Highest AQI (US) recorded in

November

77AQI (US)

Lowest AQI (US) recorded in

May

12AQI (US)

202122AQI (US)

5
25
1
26
1
25
1
23
22
18
23
29
27
7
230
3

Highest AQI (US) recorded in

April

28AQI (US)

Lowest AQI (US) recorded in

September

18AQI (US)

202028AQI (US)

12
21
15
2
1
3
51
2
1

Highest AQI (US) recorded in

May

36AQI (US)

Lowest AQI (US) recorded in

June

7AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
67AQI (US)
Least Polluted Year Recorded
2021(Avg.)
22AQI (US)

Mariano Marcos State University's annual 2026 AQI (US) (67) shows an average percentage change of 135.7% (worsened AQI (US)) compared to previous years: 2020 (28), 2021 (22), 2022 (22), 2023 (24), 2024 (40), 2025 (56).