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HistoryAQIPM2.5PM10COSO2NO2O3

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan 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

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
19th Sep 2022
80AQI
Lowest AQI recorded on
5th Sep 2024
14AQI

Same Day Analysis (2nd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 2nd Sep - 3rd Sep 2025

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan

AQI
Day
Night
.

5 AM2nd Sep 2025

6 PM

4 AM3rd Sep 2025

Day time
Avg. Highest Time
9AM2nd Sep

54AQI

Avg. Lowest Time
5PM2nd Sep

42AQI

Night time
Avg. Highest Time
7PM2nd Sep

50AQI

Avg. Lowest Time
10PM2nd Sep

41AQI

In the last 24 hours,

Northtaipower Hsiehhe's AQI reached its highest point of 54 at 9 AM during the Day, while the lowest point, 41, was recorded at 10 PM during the Night between 2nd Sep and 3rd Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan

AugSep
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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Aug 2025445 AMAQI
4th Aug 2025436 AMAQI
4th Aug 2025447 AMAQI
4th Aug 2025288 AMAQI
4th Aug 2025309 AMAQI
4th Aug 20252810 AMAQI
4th Aug 20253011 AMAQI
4th Aug 20252812 PMAQI
4th Aug 2025301 PMAQI
4th Aug 2025372 PMAQI
4th Aug 2025363 PMAQI
4th Aug 2025404 PMAQI
4th Aug 2025485 PMAQI
4th Aug 2025416 PMAQI
4th Aug 2025407 PMAQI
4th Aug 2025428 PMAQI
4th Aug 2025429 PMAQI
4th Aug 20254410 PMAQI
4th Aug 20253911 PMAQI
5th Aug 20254412 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025442 AMAQI
5th Aug 2025433 AMAQI
5th Aug 2025414 AMAQI

27°C26/30°C

5th Aug 2025415 AMAQI
5th Aug 2025426 AMAQI
5th Aug 2025427 AMAQI
5th Aug 2025398 AMAQI
5th Aug 2025439 AMAQI
5th Aug 20254110 AMAQI
5th Aug 20254611 AMAQI
5th Aug 20254612 PMAQI
5th Aug 2025491 PMAQI
5th Aug 2025472 PMAQI
5th Aug 2025503 PMAQI
5th Aug 2025424 PMAQI
5th Aug 2025305 PMAQI
5th Aug 2025326 PMAQI
5th Aug 2025467 PMAQI
5th Aug 2025468 PMAQI
5th Aug 2025439 PMAQI
5th Aug 20253710 PMAQI
5th Aug 20253911 PMAQI
6th Aug 20254412 AMAQI
6th Aug 2025441 AMAQI
6th Aug 2025432 AMAQI
6th Aug 2025443 AMAQI
6th Aug 2025434 AMAQI

27°C26/28°C

6th Aug 2025465 AMAQI
6th Aug 2025446 AMAQI
6th Aug 2025437 AMAQI
6th Aug 2025408 AMAQI
6th Aug 2025479 AMAQI
6th Aug 20253810 AMAQI
6th Aug 20255211 AMAQI
6th Aug 20254512 PMAQI
6th Aug 2025521 PMAQI
6th Aug 2025432 PMAQI
6th Aug 2025453 PMAQI
6th Aug 2025414 PMAQI
6th Aug 2025475 PMAQI
6th Aug 2025456 PMAQI
6th Aug 2025417 PMAQI
6th Aug 2025428 PMAQI
6th Aug 2025449 PMAQI
6th Aug 20254710 PMAQI
6th Aug 20254411 PMAQI
7th Aug 20254212 AMAQI
7th Aug 2025471 AMAQI
7th Aug 2025442 AMAQI
7th Aug 2025443 AMAQI
7th Aug 2025474 AMAQI

28°C27/31°C

7th Aug 2025475 AMAQI
7th Aug 2025476 AMAQI
7th Aug 2025447 AMAQI
7th Aug 2025498 AMAQI
7th Aug 2025549 AMAQI
7th Aug 20254610 AMAQI
7th Aug 20253811 AMAQI
7th Aug 20254112 PMAQI
7th Aug 2025521 PMAQI
7th Aug 2025622 PMAQI
7th Aug 2025643 PMAQI
7th Aug 2025584 PMAQI
7th Aug 2025565 PMAQI
7th Aug 2025586 PMAQI
7th Aug 2025567 PMAQI
7th Aug 2025548 PMAQI
7th Aug 2025539 PMAQI
7th Aug 20255310 PMAQI
7th Aug 20255411 PMAQI
8th Aug 20255312 AMAQI
8th Aug 2025481 AMAQI
8th Aug 2025462 AMAQI
8th Aug 2025473 AMAQI
8th Aug 2025484 AMAQI

28°C26/31°C

8th Aug 2025485 AMAQI
8th Aug 2025486 AMAQI
8th Aug 2025487 AMAQI
8th Aug 2025618 AMAQI
8th Aug 2025649 AMAQI
8th Aug 20256410 AMAQI
8th Aug 20255411 AMAQI
8th Aug 20255412 PMAQI
8th Aug 2025481 PMAQI
8th Aug 2025532 PMAQI
8th Aug 2025603 PMAQI
8th Aug 2025704 PMAQI
8th Aug 2025685 PMAQI
8th Aug 2025696 PMAQI
8th Aug 2025647 PMAQI
8th Aug 2025578 PMAQI
8th Aug 2025559 PMAQI
8th Aug 20255410 PMAQI
8th Aug 20255611 PMAQI
9th Aug 20255712 AMAQI
9th Aug 2025511 AMAQI
9th Aug 2025492 AMAQI
9th Aug 2025503 AMAQI
9th Aug 2025524 AMAQI

29°C27/32°C

9th Aug 2025525 AMAQI
9th Aug 2025526 AMAQI
9th Aug 2025527 AMAQI
9th Aug 2025618 AMAQI
9th Aug 2025669 AMAQI
9th Aug 20257610 AMAQI
9th Aug 20256811 AMAQI
9th Aug 20257612 PMAQI
9th Aug 2025691 PMAQI
9th Aug 2025562 PMAQI
9th Aug 2025553 PMAQI
9th Aug 2025534 PMAQI
9th Aug 2025495 PMAQI
9th Aug 2025516 PMAQI
9th Aug 2025507 PMAQI
9th Aug 2025508 PMAQI
9th Aug 2025529 PMAQI
9th Aug 20255410 PMAQI
9th Aug 20255211 PMAQI
10th Aug 20255212 AMAQI
10th Aug 2025521 AMAQI
10th Aug 2025522 AMAQI
10th Aug 2025533 AMAQI
10th Aug 2025554 AMAQI

29°C28/32°C

10th Aug 2025555 AMAQI
10th Aug 2025556 AMAQI
10th Aug 2025557 AMAQI
10th Aug 2025508 AMAQI
10th Aug 2025449 AMAQI
10th Aug 20253810 AMAQI
10th Aug 20253811 AMAQI
10th Aug 20254012 PMAQI
10th Aug 2025401 PMAQI
10th Aug 2025382 PMAQI
10th Aug 2025463 PMAQI
10th Aug 2025434 PMAQI
10th Aug 2025365 PMAQI
10th Aug 2025296 PMAQI
10th Aug 2025407 PMAQI
10th Aug 2025508 PMAQI
10th Aug 2025509 PMAQI
10th Aug 20255210 PMAQI
10th Aug 20255111 PMAQI
11th Aug 20255112 AMAQI
11th Aug 2025531 AMAQI
11th Aug 2025542 AMAQI
11th Aug 2025523 AMAQI
11th Aug 2025524 AMAQI

29°C27/31°C

11th Aug 2025525 AMAQI
11th Aug 2025526 AMAQI
11th Aug 2025527 AMAQI
11th Aug 2025408 AMAQI
11th Aug 2025429 AMAQI
11th Aug 20254110 AMAQI
11th Aug 20253611 AMAQI
11th Aug 20253812 PMAQI
11th Aug 2025381 PMAQI
11th Aug 2025312 PMAQI
11th Aug 2025403 PMAQI
11th Aug 2025384 PMAQI
11th Aug 2025425 PMAQI
11th Aug 2025336 PMAQI
11th Aug 2025387 PMAQI
11th Aug 2025418 PMAQI
11th Aug 2025439 PMAQI
11th Aug 20254310 PMAQI
11th Aug 20254211 PMAQI
12th Aug 20254712 AMAQI
12th Aug 2025481 AMAQI
12th Aug 2025492 AMAQI
12th Aug 2025483 AMAQI
12th Aug 2025464 AMAQI

28°C27/31°C

12th Aug 2025465 AMAQI
12th Aug 2025476 AMAQI
12th Aug 2025467 AMAQI
12th Aug 2025398 AMAQI
12th Aug 2025539 AMAQI
12th Aug 20254610 AMAQI
12th Aug 20254211 AMAQI
12th Aug 20254112 PMAQI
12th Aug 2025341 PMAQI
12th Aug 2025392 PMAQI
12th Aug 2025403 PMAQI
12th Aug 2025344 PMAQI
12th Aug 2025455 PMAQI
12th Aug 2025466 PMAQI
12th Aug 2025387 PMAQI
12th Aug 2025448 PMAQI
12th Aug 2025429 PMAQI
12th Aug 20254010 PMAQI
12th Aug 20253811 PMAQI
13th Aug 20254412 AMAQI
13th Aug 2025501 AMAQI
13th Aug 2025472 AMAQI
13th Aug 2025473 AMAQI
13th Aug 2025484 AMAQI

28°C27/31°C

13th Aug 2025455 AMAQI
13th Aug 2025486 AMAQI
13th Aug 2025487 AMAQI
13th Aug 2025268 AMAQI
13th Aug 2025349 AMAQI
13th Aug 20253410 AMAQI
13th Aug 20253711 AMAQI
13th Aug 20255012 PMAQI
13th Aug 2025461 PMAQI
13th Aug 2025482 PMAQI
13th Aug 2025523 PMAQI
13th Aug 2025424 PMAQI
13th Aug 2025455 PMAQI
13th Aug 2025376 PMAQI
13th Aug 2025397 PMAQI
13th Aug 2025398 PMAQI
13th Aug 2025349 PMAQI
13th Aug 20253510 PMAQI
13th Aug 20253211 PMAQI
14th Aug 20254412 AMAQI
14th Aug 2025501 AMAQI
14th Aug 2025482 AMAQI
14th Aug 2025483 AMAQI
14th Aug 2025464 AMAQI

27°C27/28°C

14th Aug 2025465 AMAQI
14th Aug 2025466 AMAQI
14th Aug 2025457 AMAQI
14th Aug 2025328 AMAQI
14th Aug 2025209 AMAQI
14th Aug 20252710 AMAQI
14th Aug 20253211 AMAQI
14th Aug 20252412 PMAQI
14th Aug 2025281 PMAQI
14th Aug 2025172 PMAQI
14th Aug 2025203 PMAQI
14th Aug 2025204 PMAQI
14th Aug 2025285 PMAQI
14th Aug 2025246 PMAQI
14th Aug 2025337 PMAQI
14th Aug 2025368 PMAQI
14th Aug 2025349 PMAQI
14th Aug 20253410 PMAQI
14th Aug 20253411 PMAQI
15th Aug 20254012 AMAQI
15th Aug 2025451 AMAQI
15th Aug 2025442 AMAQI
15th Aug 2025463 AMAQI
15th Aug 2025414 AMAQI

27°C25/29°C

15th Aug 2025445 AMAQI
15th Aug 2025426 AMAQI
15th Aug 2025427 AMAQI
15th Aug 2025208 AMAQI
15th Aug 2025299 AMAQI
15th Aug 20252810 AMAQI
15th Aug 20252411 AMAQI
15th Aug 20252712 PMAQI
15th Aug 2025281 PMAQI
15th Aug 2025242 PMAQI
15th Aug 2025243 PMAQI
15th Aug 2025244 PMAQI
15th Aug 2025205 PMAQI
15th Aug 2025236 PMAQI
15th Aug 2025347 PMAQI
15th Aug 2025328 PMAQI
15th Aug 2025319 PMAQI
15th Aug 20252910 PMAQI
15th Aug 20252811 PMAQI
16th Aug 20253412 AMAQI
16th Aug 2025451 AMAQI
16th Aug 2025442 AMAQI
16th Aug 2025433 AMAQI
16th Aug 2025394 AMAQI

28°C26/29°C

16th Aug 2025385 AMAQI
16th Aug 2025396 AMAQI
16th Aug 2025407 AMAQI
16th Aug 2025208 AMAQI
16th Aug 2025249 AMAQI
16th Aug 20251910 AMAQI
16th Aug 20251811 AMAQI
16th Aug 20251912 PMAQI
16th Aug 2025241 PMAQI
16th Aug 2025252 PMAQI
16th Aug 2025163 PMAQI
16th Aug 2025224 PMAQI
16th Aug 2025245 PMAQI
16th Aug 2025266 PMAQI
16th Aug 2025297 PMAQI
16th Aug 2025338 PMAQI
16th Aug 2025309 PMAQI
16th Aug 20253310 PMAQI
16th Aug 20253011 PMAQI
17th Aug 20253812 AMAQI
17th Aug 2025421 AMAQI
17th Aug 2025412 AMAQI
17th Aug 2025373 AMAQI
17th Aug 2025414 AMAQI

28°C26/29°C

17th Aug 2025385 AMAQI
17th Aug 2025376 AMAQI
17th Aug 2025387 AMAQI
17th Aug 2025348 AMAQI
17th Aug 2025309 AMAQI
17th Aug 20252510 AMAQI
17th Aug 20253211 AMAQI
17th Aug 20252812 PMAQI
17th Aug 2025281 PMAQI
17th Aug 2025222 PMAQI
17th Aug 2025283 PMAQI
17th Aug 2025284 PMAQI
17th Aug 2025245 PMAQI
17th Aug 2025256 PMAQI
17th Aug 2025317 PMAQI
17th Aug 2025348 PMAQI
17th Aug 2025319 PMAQI
17th Aug 20253010 PMAQI
17th Aug 20252811 PMAQI
18th Aug 20253512 AMAQI
18th Aug 2025381 AMAQI
18th Aug 2025392 AMAQI
18th Aug 2025373 AMAQI
18th Aug 2025374 AMAQI

28°C26/30°C

18th Aug 2025425 AMAQI
18th Aug 2025396 AMAQI
18th Aug 2025397 AMAQI
18th Aug 2025388 AMAQI
18th Aug 2025369 AMAQI
18th Aug 20255310 AMAQI
18th Aug 20255211 AMAQI
18th Aug 20255112 PMAQI
18th Aug 2025361 PMAQI
18th Aug 2025402 PMAQI
18th Aug 2025433 PMAQI
18th Aug 2025354 PMAQI
18th Aug 2025355 PMAQI
18th Aug 2025346 PMAQI
18th Aug 2025307 PMAQI
18th Aug 2025368 PMAQI
18th Aug 2025309 PMAQI
18th Aug 20253110 PMAQI
18th Aug 20253911 PMAQI
19th Aug 20253912 AMAQI
19th Aug 2025391 AMAQI
19th Aug 2025402 AMAQI
19th Aug 2025403 AMAQI
19th Aug 2025404 AMAQI

28°C26/30°C

19th Aug 2025405 AMAQI
19th Aug 2025426 AMAQI
19th Aug 2025417 AMAQI
19th Aug 2025348 AMAQI
19th Aug 2025399 AMAQI
19th Aug 20254410 AMAQI
19th Aug 20254211 AMAQI
19th Aug 20254212 PMAQI
19th Aug 2025401 PMAQI
19th Aug 2025422 PMAQI
19th Aug 2025423 PMAQI
19th Aug 2025404 PMAQI
19th Aug 2025375 PMAQI
19th Aug 2025366 PMAQI
19th Aug 2025427 PMAQI
19th Aug 2025488 PMAQI
19th Aug 2025469 PMAQI
19th Aug 20254510 PMAQI
19th Aug 20254011 PMAQI
20th Aug 20254112 AMAQI
20th Aug 2025451 AMAQI
20th Aug 2025452 AMAQI
20th Aug 2025463 AMAQI
20th Aug 2025434 AMAQI

28°C26/31°C

20th Aug 2025445 AMAQI
20th Aug 2025436 AMAQI
20th Aug 2025447 AMAQI
20th Aug 2025348 AMAQI
20th Aug 2025359 AMAQI
20th Aug 20253710 AMAQI
20th Aug 20253211 AMAQI
20th Aug 20252712 PMAQI
20th Aug 2025311 PMAQI
20th Aug 2025302 PMAQI
20th Aug 2025273 PMAQI
20th Aug 2025324 PMAQI
20th Aug 2025265 PMAQI
20th Aug 2025286 PMAQI
20th Aug 2025357 PMAQI
20th Aug 2025348 PMAQI
20th Aug 2025399 PMAQI
20th Aug 20253610 PMAQI
20th Aug 20253811 PMAQI
21st Aug 20254212 AMAQI
21st Aug 2025431 AMAQI
21st Aug 2025442 AMAQI
21st Aug 2025423 AMAQI
21st Aug 2025424 AMAQI

28°C26/31°C

21st Aug 2025425 AMAQI
21st Aug 2025416 AMAQI
21st Aug 2025437 AMAQI
21st Aug 2025138 AMAQI
21st Aug 2025239 AMAQI
21st Aug 20252710 AMAQI
21st Aug 20252611 AMAQI
21st Aug 20253212 PMAQI
21st Aug 2025331 PMAQI
21st Aug 2025322 PMAQI
21st Aug 2025263 PMAQI
21st Aug 2025304 PMAQI
21st Aug 2025295 PMAQI
21st Aug 2025356 PMAQI
21st Aug 2025347 PMAQI
21st Aug 2025388 PMAQI
21st Aug 2025409 PMAQI
21st Aug 20253910 PMAQI
21st Aug 20253811 PMAQI
22nd Aug 20254612 AMAQI
22nd Aug 2025441 AMAQI
22nd Aug 2025422 AMAQI
22nd Aug 2025423 AMAQI
22nd Aug 2025394 AMAQI

29°C27/32°C

22nd Aug 2025415 AMAQI
22nd Aug 2025406 AMAQI
22nd Aug 2025397 AMAQI
22nd Aug 2025308 AMAQI
22nd Aug 2025289 AMAQI
22nd Aug 20255110 AMAQI
22nd Aug 20253911 AMAQI
22nd Aug 20253212 PMAQI
22nd Aug 2025411 PMAQI
22nd Aug 2025402 PMAQI
22nd Aug 2025333 PMAQI
22nd Aug 2025284 PMAQI
22nd Aug 2025335 PMAQI
22nd Aug 2025406 PMAQI
22nd Aug 2025387 PMAQI
22nd Aug 2025508 PMAQI
22nd Aug 2025389 PMAQI
22nd Aug 20253810 PMAQI
22nd Aug 20253911 PMAQI
23rd Aug 20254112 AMAQI
23rd Aug 2025421 AMAQI
23rd Aug 2025442 AMAQI
23rd Aug 2025443 AMAQI
23rd Aug 2025444 AMAQI

29°C27/32°C

23rd Aug 2025445 AMAQI
23rd Aug 2025426 AMAQI
23rd Aug 2025437 AMAQI
23rd Aug 2025388 AMAQI
23rd Aug 2025419 AMAQI
23rd Aug 20253310 AMAQI
23rd Aug 20253911 AMAQI
23rd Aug 20254312 PMAQI
23rd Aug 2025321 PMAQI
23rd Aug 2025322 PMAQI
23rd Aug 2025283 PMAQI
23rd Aug 2025364 PMAQI
23rd Aug 2025425 PMAQI
23rd Aug 2025366 PMAQI
23rd Aug 2025387 PMAQI
23rd Aug 2025468 PMAQI
23rd Aug 2025439 PMAQI
23rd Aug 20254210 PMAQI
23rd Aug 20254311 PMAQI
24th Aug 20254212 AMAQI
24th Aug 2025441 AMAQI
24th Aug 2025452 AMAQI
24th Aug 2025463 AMAQI
24th Aug 2025454 AMAQI

29°C27/32°C

24th Aug 2025445 AMAQI
24th Aug 2025466 AMAQI
24th Aug 2025447 AMAQI
24th Aug 2025478 AMAQI
24th Aug 2025309 AMAQI
24th Aug 20253110 AMAQI
24th Aug 20253211 AMAQI
24th Aug 20253812 PMAQI
24th Aug 2025391 PMAQI
24th Aug 2025272 PMAQI
24th Aug 2025323 PMAQI
24th Aug 2025284 PMAQI
24th Aug 2025205 PMAQI
24th Aug 2025286 PMAQI
24th Aug 2025347 PMAQI
24th Aug 2025418 PMAQI
24th Aug 2025369 PMAQI
24th Aug 20253810 PMAQI
24th Aug 20253311 PMAQI
25th Aug 20253912 AMAQI
25th Aug 2025451 AMAQI
25th Aug 2025452 AMAQI
25th Aug 2025433 AMAQI
25th Aug 2025474 AMAQI

29°C27/31°C

25th Aug 2025465 AMAQI
25th Aug 2025446 AMAQI
25th Aug 2025437 AMAQI
25th Aug 2025228 AMAQI
25th Aug 2025209 AMAQI
25th Aug 20251910 AMAQI
25th Aug 20252511 AMAQI
25th Aug 20253112 PMAQI
25th Aug 2025381 PMAQI
25th Aug 2025282 PMAQI
25th Aug 2025193 PMAQI
25th Aug 2025354 PMAQI
25th Aug 2025265 PMAQI
25th Aug 2025236 PMAQI
25th Aug 2025287 PMAQI
25th Aug 2025308 PMAQI
25th Aug 2025329 PMAQI
25th Aug 20253210 PMAQI
25th Aug 20252811 PMAQI
26th Aug 20254012 AMAQI
26th Aug 2025461 AMAQI
26th Aug 2025462 AMAQI
26th Aug 2025433 AMAQI
26th Aug 2025404 AMAQI

28°C27/31°C

26th Aug 2025405 AMAQI
26th Aug 2025426 AMAQI
26th Aug 2025447 AMAQI
26th Aug 2025338 AMAQI
26th Aug 2025229 AMAQI
26th Aug 20252510 AMAQI
26th Aug 20252311 AMAQI
26th Aug 20253012 PMAQI
26th Aug 2025261 PMAQI
26th Aug 2025242 PMAQI
26th Aug 2025313 PMAQI
26th Aug 2025224 PMAQI
26th Aug 2025335 PMAQI
26th Aug 2025286 PMAQI
26th Aug 2025247 PMAQI
26th Aug 2025318 PMAQI
26th Aug 2025429 PMAQI
26th Aug 20252910 PMAQI
26th Aug 20253211 PMAQI
27th Aug 20254212 AMAQI
27th Aug 2025461 AMAQI
27th Aug 2025442 AMAQI
27th Aug 2025423 AMAQI
27th Aug 2025434 AMAQI

28°C26/30°C

27th Aug 2025405 AMAQI
27th Aug 2025406 AMAQI
27th Aug 2025397 AMAQI
27th Aug 2025318 AMAQI
27th Aug 2025369 AMAQI
27th Aug 20252810 AMAQI
27th Aug 20252911 AMAQI
27th Aug 20252812 PMAQI
27th Aug 2025261 PMAQI
27th Aug 2025342 PMAQI
27th Aug 2025273 PMAQI
27th Aug 2025284 PMAQI
27th Aug 2025155 PMAQI
27th Aug 2025246 PMAQI
27th Aug 2025347 PMAQI
27th Aug 2025348 PMAQI
27th Aug 2025349 PMAQI
27th Aug 20253210 PMAQI
27th Aug 20253211 PMAQI
28th Aug 20253612 AMAQI
28th Aug 2025431 AMAQI
28th Aug 2025442 AMAQI
28th Aug 2025423 AMAQI
28th Aug 2025404 AMAQI

28°C27/30°C

28th Aug 2025405 AMAQI
28th Aug 2025416 AMAQI
28th Aug 2025387 AMAQI
28th Aug 2025308 AMAQI
28th Aug 2025279 AMAQI
28th Aug 20252610 AMAQI
28th Aug 20252411 AMAQI
28th Aug 20253012 PMAQI
28th Aug 2025241 PMAQI
28th Aug 2025252 PMAQI
28th Aug 2025263 PMAQI
28th Aug 2025214 PMAQI
28th Aug 2025185 PMAQI
28th Aug 2025236 PMAQI
28th Aug 2025247 PMAQI
28th Aug 2025308 PMAQI
28th Aug 2025309 PMAQI
28th Aug 20253010 PMAQI
28th Aug 20253411 PMAQI
29th Aug 20253812 AMAQI
29th Aug 2025411 AMAQI
29th Aug 2025442 AMAQI
29th Aug 2025403 AMAQI
29th Aug 2025394 AMAQI

28°C27/30°C

29th Aug 2025385 AMAQI
29th Aug 2025426 AMAQI
29th Aug 2025397 AMAQI
29th Aug 2025218 AMAQI
29th Aug 2025219 AMAQI
29th Aug 20251910 AMAQI
29th Aug 20252011 AMAQI
29th Aug 20252112 PMAQI
29th Aug 2025201 PMAQI
29th Aug 2025292 PMAQI
29th Aug 2025183 PMAQI
29th Aug 2025214 PMAQI
29th Aug 2025195 PMAQI
29th Aug 2025206 PMAQI
29th Aug 2025287 PMAQI
29th Aug 2025428 PMAQI
29th Aug 2025379 PMAQI
29th Aug 20253310 PMAQI
29th Aug 20253211 PMAQI
30th Aug 20253912 AMAQI
30th Aug 2025421 AMAQI
30th Aug 2025422 AMAQI
30th Aug 2025383 AMAQI
30th Aug 2025384 AMAQI

28°C27/30°C

30th Aug 2025375 AMAQI
30th Aug 2025386 AMAQI
30th Aug 2025367 AMAQI
30th Aug 2025248 AMAQI
30th Aug 2025269 AMAQI
30th Aug 20253410 AMAQI
30th Aug 20252511 AMAQI
30th Aug 20252612 PMAQI
30th Aug 2025321 PMAQI
30th Aug 2025342 PMAQI
30th Aug 2025333 PMAQI
30th Aug 2025284 PMAQI
30th Aug 2025305 PMAQI
30th Aug 2025316 PMAQI
30th Aug 2025307 PMAQI
30th Aug 2025388 PMAQI
30th Aug 2025349 PMAQI
30th Aug 20253610 PMAQI
30th Aug 20253311 PMAQI
31st Aug 20253812 AMAQI
31st Aug 2025431 AMAQI
31st Aug 2025402 AMAQI
31st Aug 2025383 AMAQI
31st Aug 2025374 AMAQI

28°C26/31°C

31st Aug 2025365 AMAQI
31st Aug 2025386 AMAQI
31st Aug 2025387 AMAQI
31st Aug 2025388 AMAQI
31st Aug 2025439 AMAQI
31st Aug 20255010 AMAQI
31st Aug 20254811 AMAQI
31st Aug 20254412 PMAQI
31st Aug 2025501 PMAQI
31st Aug 2025452 PMAQI
31st Aug 2025373 PMAQI
31st Aug 2025404 PMAQI
31st Aug 2025425 PMAQI
31st Aug 2025396 PMAQI
31st Aug 2025427 PMAQI
31st Aug 2025448 PMAQI
31st Aug 2025449 PMAQI
31st Aug 20253810 PMAQI
31st Aug 20253911 PMAQI
1st Sep 20253912 AMAQI
1st Sep 2025431 AMAQI
1st Sep 2025422 AMAQI
1st Sep 2025403 AMAQI
1st Sep 2025404 AMAQI

28°C26/31°C

1st Sep 2025435 AMAQI
1st Sep 2025456 AMAQI
1st Sep 2025447 AMAQI
1st Sep 2025418 AMAQI
1st Sep 2025429 AMAQI
1st Sep 20255010 AMAQI
1st Sep 20254611 AMAQI
1st Sep 20254812 PMAQI
1st Sep 2025531 PMAQI
1st Sep 2025522 PMAQI
1st Sep 2025443 PMAQI
1st Sep 2025484 PMAQI
1st Sep 2025565 PMAQI
1st Sep 2025566 PMAQI
1st Sep 2025487 PMAQI
1st Sep 2025518 PMAQI
1st Sep 2025529 PMAQI
1st Sep 20254910 PMAQI
1st Sep 20255111 PMAQI
2nd Sep 20254912 AMAQI
2nd Sep 2025431 AMAQI
2nd Sep 2025442 AMAQI
2nd Sep 2025443 AMAQI
2nd Sep 2025464 AMAQI

28°C27/30°C

2nd Sep 2025465 AMAQI
2nd Sep 2025476 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025448 AMAQI
2nd Sep 2025549 AMAQI
2nd Sep 20255210 AMAQI
2nd Sep 20254811 AMAQI
2nd Sep 20255412 PMAQI
2nd Sep 2025511 PMAQI
2nd Sep 2025422 PMAQI
2nd Sep 2025433 PMAQI
2nd Sep 2025464 PMAQI
2nd Sep 2025425 PMAQI
2nd Sep 2025456 PMAQI
2nd Sep 2025507 PMAQI
2nd Sep 2025478 PMAQI
2nd Sep 2025509 PMAQI
2nd Sep 20254110 PMAQI
2nd Sep 20254911 PMAQI
3rd Sep 20255012 AMAQI
3rd Sep 2025471 AMAQI
3rd Sep 2025482 AMAQI
3rd Sep 2025503 AMAQI
3rd Sep 2025494 AMAQI

28°C26/31°C

3rd Sep 2025495 AMAQI
5 AM
3rd Sep 2025506 AMAQI
3rd Sep 2025497 AMAQI
3rd Sep 2025478 AMAQI
3rd Sep 2025509 AMAQI
3rd Sep 20254910 AMAQI
3rd Sep 20255811 AMAQI
11 AM
3rd Sep 20255912 PMAQI
3rd Sep 2025571 PMAQI
3rd Sep 2025542 PMAQI
3rd Sep 2025563 PMAQI
3rd Sep 2025584 PMAQI
3rd Sep 2025525 PMAQI
3rd Sep 2025576 PMAQI
6 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 7 AM

44AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
8 AM - 6 PM

37AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 44), while the lowest AQI was between 8 AM to 6 PM (Avg. 37).
Night time
Avg. Highest Time
1 AM - 4 AM

45AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM

38AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 45), while the lowest AQI was between 7 PM to 7 PM (Avg. 38).

2025 Days Vs Air Quality

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan

2025

51%

125

49%

120

Total number of days with different AQI categories in last 246 days in 2025 (119 days remaining)

Good
125 Days
Moderate
120 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 51%

Health Risk Level:

Considerable

In 2025, 51% of 246 days were within WHO’s safe air quality limits, and 49% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.

Annual Air Quality Insights

Northtaipower Hsiehhe, Keelung, Keelung, Taiwan

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
81AQI
2nd January 2025
56AQI
3rd January 2025
68AQI
4th January 2025
55AQI
5th January 2025
58AQI
6th January 2025
78AQI
7th January 2025
67AQI
8th January 2025
56AQI
9th January 2025
71AQI
10th January 2025
57AQI
11th January 2025
50AQI
12th January 2025
58AQI
13th January 2025
62AQI
14th January 2025
62AQI
15th January 2025
84AQI
16th January 2025
57AQI
17th January 2025
59AQI
18th January 2025
54AQI
19th January 2025
60AQI
20th January 2025
73AQI
21st January 2025
84AQI
22nd January 2025
73AQI
23rd January 2025
70AQI
24th January 2025
61AQI
25th January 2025
71AQI
26th January 2025
56AQI
27th January 2025
66AQI
28th January 2025
60AQI
29th January 2025
62AQI
30th January 2025
58AQI
31st January 2025
55AQI
1st February 2025
53AQI
2nd February 2025
46AQI
3rd February 2025
53AQI
4th February 2025
72AQI
5th February 2025
56AQI
6th February 2025
58AQI
7th February 2025
50AQI
8th February 2025
58AQI
9th February 2025
54AQI
10th February 2025
51AQI
11th February 2025
40AQI
12th February 2025
69AQI
13th February 2025
51AQI
14th February 2025
52AQI
15th February 2025
52AQI
16th February 2025
66AQI
17th February 2025
99AQI
18th February 2025
54AQI
19th February 2025
65AQI
20th February 2025
54AQI
21st February 2025
43AQI
22nd February 2025
50AQI
23rd February 2025
38AQI
24th February 2025
68AQI
25th February 2025
52AQI
26th February 2025
72AQI
27th February 2025
95AQI
28th February 2025
75AQI
1st March 2025
67AQI
2nd March 2025
64AQI
3rd March 2025
71AQI
4th March 2025
51AQI
5th March 2025
41AQI
6th March 2025
41AQI
7th March 2025
56AQI
8th March 2025
52AQI
9th March 2025
50AQI
10th March 2025
52AQI
11th March 2025
64AQI
12th March 2025
59AQI
13th March 2025
58AQI
14th March 2025
50AQI
15th March 2025
39AQI
16th March 2025
61AQI
17th March 2025
64AQI
18th March 2025
60AQI
19th March 2025
69AQI
20th March 2025
60AQI
21st March 2025
59AQI
22nd March 2025
60AQI
23rd March 2025
62AQI
24th March 2025
64AQI
25th March 2025
72AQI
26th March 2025
72AQI
27th March 2025
75AQI
28th March 2025
67AQI
29th March 2025
52AQI
30th March 2025
38AQI
31st March 2025
33AQI
1st April 2025
41AQI
2nd April 2025
49AQI
3rd April 2025
50AQI
4th April 2025
62AQI
5th April 2025
67AQI
6th April 2025
63AQI
7th April 2025
69AQI
8th April 2025
67AQI
9th April 2025
65AQI
10th April 2025
52AQI
11th April 2025
55AQI
12th April 2025
51AQI
13th April 2025
80AQI
14th April 2025
65AQI
15th April 2025
74AQI
16th April 2025
76AQI
17th April 2025
79AQI
18th April 2025
60AQI
19th April 2025
67AQI
20th April 2025
58AQI
21st April 2025
67AQI
22nd April 2025
56AQI
23rd April 2025
49AQI
24th April 2025
49AQI
25th April 2025
45AQI
26th April 2025
42AQI
27th April 2025
44AQI
28th April 2025
50AQI
29th April 2025
46AQI
30th April 2025
52AQI
1st May 2025
63AQI
2nd May 2025
66AQI
3rd May 2025
72AQI
4th May 2025
67AQI
5th May 2025
62AQI
6th May 2025
63AQI
7th May 2025
57AQI
8th May 2025
54AQI
9th May 2025
56AQI
10th May 2025
47AQI
11th May 2025
46AQI
12th May 2025
57AQI
13th May 2025
47AQI
14th May 2025
52AQI
15th May 2025
45AQI
16th May 2025
49AQI
17th May 2025
52AQI
18th May 2025
45AQI
19th May 2025
42AQI
20th May 2025
49AQI
21st May 2025
48AQI
22nd May 2025
52AQI
23rd May 2025
49AQI
24th May 2025
43AQI
25th May 2025
65AQI
26th May 2025
50AQI
27th May 2025
44AQI
28th May 2025
41AQI
29th May 2025
32AQI
30th May 2025
54AQI
31st May 2025
54AQI
1st June 2025
60AQI
2nd June 2025
53AQI
3rd June 2025
39AQI
4th June 2025
43AQI
5th June 2025
42AQI
6th June 2025
40AQI
7th June 2025
45AQI
8th June 2025
50AQI
9th June 2025
45AQI
10th June 2025
34AQI
11th June 2025
35AQI
12th June 2025
27AQI
13th June 2025
34AQI
14th June 2025
34AQI
15th June 2025
41AQI
16th June 2025
42AQI
17th June 2025
35AQI
18th June 2025
38AQI
19th June 2025
33AQI
20th June 2025
32AQI
21st June 2025
37AQI
22nd June 2025
28AQI
23rd June 2025
37AQI
24th June 2025
42AQI
25th June 2025
44AQI
26th June 2025
38AQI
27th June 2025
34AQI
28th June 2025
31AQI
29th June 2025
29AQI
30th June 2025
28AQI
1st July 2025
30AQI
2nd July 2025
37AQI
3rd July 2025
44AQI
4th July 2025
34AQI
5th July 2025
34AQI
6th July 2025
30AQI
7th July 2025
31AQI
8th July 2025
44AQI
9th July 2025
41AQI
10th July 2025
44AQI
11th July 2025
38AQI
12th July 2025
46AQI
13th July 2025
49AQI
14th July 2025
53AQI
15th July 2025
52AQI
16th July 2025
53AQI
17th July 2025
53AQI
18th July 2025
41AQI
19th July 2025
38AQI
20th July 2025
33AQI
21st July 2025
31AQI
22nd July 2025
29AQI
23rd July 2025
31AQI
24th July 2025
34AQI
25th July 2025
31AQI
26th July 2025
36AQI
27th July 2025
41AQI
28th July 2025
36AQI
29th July 2025
34AQI
30th July 2025
39AQI
31st July 2025
41AQI
1st August 2025
41AQI
2nd August 2025
40AQI
3rd August 2025
38AQI
4th August 2025
40AQI
5th August 2025
42AQI
6th August 2025
44AQI
7th August 2025
50AQI
8th August 2025
55AQI
9th August 2025
55AQI
10th August 2025
47AQI
11th August 2025
44AQI
12th August 2025
44AQI
13th August 2025
42AQI
14th August 2025
35AQI
15th August 2025
33AQI
16th August 2025
31AQI
17th August 2025
32AQI
18th August 2025
38AQI
19th August 2025
41AQI
20th August 2025
37AQI
21st August 2025
36AQI
22nd August 2025
39AQI
23rd August 2025
40AQI
24th August 2025
37AQI
25th August 2025
33AQI
26th August 2025
34AQI
27th August 2025
34AQI
28th August 2025
32AQI
29th August 2025
31AQI
30th August 2025
34AQI
31st August 2025
41AQI
1st September 2025
47AQI
2nd September 2025
46AQI
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

64AQI

59AQI

58AQI

58AQI

52AQI

38AQI

39AQI

39AQI

47AQI

No. of days

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

202551AQI

1
30
6
22
7
24
10
20
15
16
28
2
27
4
29
2
2
125
120

Highest AQI recorded in

January

64AQI

Lowest AQI recorded in

June

38AQI

202445AQI

8
23
14
14
1
7
24
10
20
22
9
29
31
21
9
28
2
30
1
25
5
14
17
239
124
1

Highest AQI recorded in

March

61AQI

Lowest AQI recorded in

September

29AQI

202353AQI

8
23
7
21
4
27
3
26
1
8
23
15
10
27
4
25
6
25
5
22
7
19
10
14
17
177
179
1

Highest AQI recorded in

April

67AQI

Lowest AQI recorded in

July

42AQI

202249AQI

15
15
14
7
11
19
1
3
14
27
4
23
7
13
8
1
17
11
18
13
23
7
13
18
178
123
1

Highest AQI recorded in

March

58AQI

Lowest AQI recorded in

May

37AQI

202146AQI

7
22
2
24
2
4
23
18
10
23
8
30
26
5
24
7
28
2
29
2
14
16
19
12
224
131
2

Highest AQI recorded in

February

67AQI

Lowest AQI recorded in

June

32AQI

202054AQI

4
3
28
22
9
11
19
10
21
7
23
13
18
66
122

Highest AQI recorded in

June

62AQI

Lowest AQI recorded in

August

47AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
54AQI
Least Polluted Year Recorded
2024(Avg.)
45AQI

Northtaipower Hsiehhe's annual 2025 AQI (51) shows an average percentage change of 3.07% (worsened AQI) compared to previous years: 2020 (54), 2021 (46), 2022 (49), 2023 (53), 2024 (45).