Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Hanoi, Ha Noi, Vietnam 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

Hanoi, Ha Noi, Vietnam

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Oct 2024
159AQI
Lowest AQI recorded on
10th Oct 2022
16AQI

Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 93 of Moderate air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 4th Oct - 5th Oct 2025

Hanoi, Ha Noi, Vietnam

AQI
Day
Night
.

5 AM4th Oct 2025

5 PM

4 AM5th Oct 2025

Day time
Avg. Highest Time
10AM4th Oct

107AQI

Avg. Lowest Time
5AM4th Oct

82AQI

Night time
Avg. Highest Time
4AM5th Oct

113AQI

Avg. Lowest Time
7PM4th Oct

94AQI

In the last 24 hours,

Hanoi's AQI reached its highest point of 113 at 4 AM during the Night, while the lowest point, 82, was recorded at 5 AM during the Day between 4th Oct and 5th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Hanoi, Ha Noi, Vietnam

SepOct
05th - 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 - 05th05th
Day
Night
5th Sep 2025435 AMAQI
5th Sep 2025456 AMAQI
5th Sep 2025417 AMAQI
5th Sep 2025388 AMAQI
5th Sep 2025359 AMAQI
5th Sep 20253910 AMAQI
5th Sep 20253211 AMAQI
5th Sep 20253512 PMAQI
5th Sep 2025341 PMAQI
5th Sep 2025382 PMAQI
5th Sep 2025323 PMAQI
5th Sep 2025294 PMAQI
5th Sep 2025295 PMAQI
5th Sep 2025376 PMAQI
5th Sep 2025487 PMAQI
5th Sep 2025498 PMAQI
5th Sep 2025509 PMAQI
5th Sep 20254710 PMAQI
5th Sep 20254711 PMAQI
6th Sep 20254612 AMAQI
6th Sep 2025461 AMAQI
6th Sep 2025452 AMAQI
6th Sep 2025433 AMAQI
6th Sep 2025444 AMAQI

29°C25/33°C

6th Sep 2025435 AMAQI
6th Sep 2025436 AMAQI
6th Sep 2025267 AMAQI
6th Sep 2025358 AMAQI
6th Sep 2025309 AMAQI
6th Sep 20254310 AMAQI
6th Sep 20254211 AMAQI
6th Sep 20253412 PMAQI
6th Sep 2025401 PMAQI
6th Sep 2025392 PMAQI
6th Sep 2025313 PMAQI
6th Sep 2025314 PMAQI
6th Sep 2025275 PMAQI
6th Sep 2025366 PMAQI
6th Sep 2025397 PMAQI
6th Sep 2025498 PMAQI
6th Sep 2025469 PMAQI
6th Sep 20254310 PMAQI
6th Sep 20254211 PMAQI
7th Sep 20254312 AMAQI
7th Sep 2025451 AMAQI
7th Sep 2025432 AMAQI
7th Sep 2025433 AMAQI
7th Sep 2025444 AMAQI

29°C26/35°C

7th Sep 2025455 AMAQI
7th Sep 2025446 AMAQI
7th Sep 2025357 AMAQI
7th Sep 2025498 AMAQI
7th Sep 2025569 AMAQI
7th Sep 20255910 AMAQI
7th Sep 20255211 AMAQI
7th Sep 20255812 PMAQI
7th Sep 2025581 PMAQI
7th Sep 2025562 PMAQI
7th Sep 2025523 PMAQI
7th Sep 2025484 PMAQI
7th Sep 2025525 PMAQI
7th Sep 2025496 PMAQI
7th Sep 2025527 PMAQI
7th Sep 2025568 PMAQI
7th Sep 2025599 PMAQI
7th Sep 20256010 PMAQI
7th Sep 20256111 PMAQI
8th Sep 20255612 AMAQI
8th Sep 2025581 AMAQI
8th Sep 2025522 AMAQI
8th Sep 2025493 AMAQI
8th Sep 2025474 AMAQI

30°C26/35°C

8th Sep 2025455 AMAQI
8th Sep 2025486 AMAQI
8th Sep 2025607 AMAQI
8th Sep 2025638 AMAQI
8th Sep 2025629 AMAQI
8th Sep 20256810 AMAQI
8th Sep 20256211 AMAQI
8th Sep 20256412 PMAQI
8th Sep 2025571 PMAQI
8th Sep 2025522 PMAQI
8th Sep 2025543 PMAQI
8th Sep 2025554 PMAQI
8th Sep 2025535 PMAQI
8th Sep 2025506 PMAQI
8th Sep 2025537 PMAQI
8th Sep 2025588 PMAQI
8th Sep 2025609 PMAQI
8th Sep 20255810 PMAQI
8th Sep 20256411 PMAQI
9th Sep 20255912 AMAQI
9th Sep 2025531 AMAQI
9th Sep 2025532 AMAQI
9th Sep 2025543 AMAQI
9th Sep 2025534 AMAQI

30°C26/36°C

9th Sep 2025545 AMAQI
9th Sep 2025546 AMAQI
9th Sep 2025477 AMAQI
9th Sep 2025498 AMAQI
9th Sep 2025539 AMAQI
9th Sep 20254810 AMAQI
9th Sep 20253511 AMAQI
9th Sep 20254112 PMAQI
9th Sep 2025311 PMAQI
9th Sep 2025292 PMAQI
9th Sep 2025283 PMAQI
9th Sep 2025294 PMAQI
9th Sep 2025385 PMAQI
9th Sep 2025416 PMAQI
9th Sep 2025457 PMAQI
9th Sep 2025468 PMAQI
9th Sep 2025489 PMAQI
9th Sep 20255010 PMAQI
9th Sep 20255311 PMAQI
10th Sep 20255312 AMAQI
10th Sep 2025541 AMAQI
10th Sep 2025522 AMAQI
10th Sep 2025523 AMAQI
10th Sep 2025524 AMAQI

28°C26/32°C

10th Sep 2025525 AMAQI
10th Sep 2025526 AMAQI
10th Sep 2025487 AMAQI
10th Sep 2025428 AMAQI
10th Sep 2025499 AMAQI
10th Sep 20254910 AMAQI
10th Sep 20254311 AMAQI
10th Sep 20255012 PMAQI
10th Sep 2025461 PMAQI
10th Sep 2025532 PMAQI
10th Sep 2025523 PMAQI
10th Sep 2025504 PMAQI
10th Sep 2025525 PMAQI
10th Sep 2025556 PMAQI
10th Sep 2025507 PMAQI
10th Sep 2025568 PMAQI
10th Sep 2025579 PMAQI
10th Sep 20254910 PMAQI
10th Sep 20254711 PMAQI
11th Sep 20255212 AMAQI
11th Sep 2025501 AMAQI
11th Sep 2025512 AMAQI
11th Sep 2025503 AMAQI
11th Sep 2025524 AMAQI

28°C25/31°C

11th Sep 2025525 AMAQI
11th Sep 2025526 AMAQI
11th Sep 2025317 AMAQI
11th Sep 2025308 AMAQI
11th Sep 2025339 AMAQI
11th Sep 20253810 AMAQI
11th Sep 20253711 AMAQI
11th Sep 20254312 PMAQI
11th Sep 2025321 PMAQI
11th Sep 2025392 PMAQI
11th Sep 2025313 PMAQI
11th Sep 2025404 PMAQI
11th Sep 2025365 PMAQI
11th Sep 2025466 PMAQI
11th Sep 2025567 PMAQI
11th Sep 2025498 PMAQI
11th Sep 2025509 PMAQI
11th Sep 20254910 PMAQI
11th Sep 20254611 PMAQI
12th Sep 20255012 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025492 AMAQI
12th Sep 2025493 AMAQI
12th Sep 2025504 AMAQI

28°C25/33°C

12th Sep 2025515 AMAQI
12th Sep 2025526 AMAQI
12th Sep 2025337 AMAQI
12th Sep 2025348 AMAQI
12th Sep 2025279 AMAQI
12th Sep 20253610 AMAQI
12th Sep 20252911 AMAQI
12th Sep 20253412 PMAQI
12th Sep 2025321 PMAQI
12th Sep 2025312 PMAQI
12th Sep 2025273 PMAQI
12th Sep 2025294 PMAQI
12th Sep 2025375 PMAQI
12th Sep 2025436 PMAQI
12th Sep 2025427 PMAQI
12th Sep 2025448 PMAQI
12th Sep 2025399 PMAQI
12th Sep 20254610 PMAQI
12th Sep 20254911 PMAQI
13th Sep 20255212 AMAQI
13th Sep 2025501 AMAQI
13th Sep 2025492 AMAQI
13th Sep 2025493 AMAQI
13th Sep 2025494 AMAQI

28°C25/32°C

13th Sep 2025485 AMAQI
13th Sep 2025486 AMAQI
13th Sep 2025277 AMAQI
13th Sep 2025308 AMAQI
13th Sep 2025349 AMAQI
13th Sep 20253910 AMAQI
13th Sep 20253611 AMAQI
13th Sep 20253012 PMAQI
13th Sep 2025291 PMAQI
13th Sep 2025342 PMAQI
13th Sep 2025213 PMAQI
13th Sep 2025294 PMAQI
13th Sep 2025235 PMAQI
13th Sep 2025386 PMAQI
13th Sep 2025417 PMAQI
13th Sep 2025448 PMAQI
13th Sep 2025449 PMAQI
13th Sep 20253810 PMAQI
13th Sep 20254111 PMAQI
14th Sep 20254812 AMAQI
14th Sep 2025471 AMAQI
14th Sep 2025452 AMAQI
14th Sep 2025433 AMAQI
14th Sep 2025434 AMAQI

28°C25/33°C

14th Sep 2025445 AMAQI
14th Sep 2025446 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025298 AMAQI
14th Sep 2025319 AMAQI
14th Sep 20253510 AMAQI
14th Sep 20253011 AMAQI
14th Sep 20253112 PMAQI
14th Sep 2025391 PMAQI
14th Sep 2025332 PMAQI
14th Sep 2025363 PMAQI
14th Sep 2025364 PMAQI
14th Sep 2025315 PMAQI
14th Sep 2025356 PMAQI
14th Sep 2025447 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025499 PMAQI
14th Sep 20255110 PMAQI
14th Sep 20255111 PMAQI
15th Sep 20255312 AMAQI
15th Sep 2025481 AMAQI
15th Sep 2025452 AMAQI
15th Sep 2025413 AMAQI
15th Sep 2025434 AMAQI

28°C25/33°C

15th Sep 2025435 AMAQI
15th Sep 2025436 AMAQI
15th Sep 2025347 AMAQI
15th Sep 2025358 AMAQI
15th Sep 2025419 AMAQI
15th Sep 20254110 AMAQI
15th Sep 20254011 AMAQI
15th Sep 20254112 PMAQI
15th Sep 2025351 PMAQI
15th Sep 2025472 PMAQI
15th Sep 2025423 PMAQI
15th Sep 2025404 PMAQI
15th Sep 2025485 PMAQI
15th Sep 2025496 PMAQI
15th Sep 2025447 PMAQI
15th Sep 2025428 PMAQI
15th Sep 2025439 PMAQI
15th Sep 20254910 PMAQI
15th Sep 20254411 PMAQI
16th Sep 20254712 AMAQI
16th Sep 2025461 AMAQI
16th Sep 2025462 AMAQI
16th Sep 2025423 AMAQI
16th Sep 2025434 AMAQI

28°C25/31°C

16th Sep 2025445 AMAQI
16th Sep 2025446 AMAQI
16th Sep 2025517 AMAQI
16th Sep 2025578 AMAQI
16th Sep 2025569 AMAQI
16th Sep 20254810 AMAQI
16th Sep 20255211 AMAQI
16th Sep 20254612 PMAQI
16th Sep 2025441 PMAQI
16th Sep 2025412 PMAQI
16th Sep 2025423 PMAQI
16th Sep 2025474 PMAQI
16th Sep 2025465 PMAQI
16th Sep 2025496 PMAQI
16th Sep 2025477 PMAQI
16th Sep 2025538 PMAQI
16th Sep 2025499 PMAQI
16th Sep 20255910 PMAQI
16th Sep 20255411 PMAQI
17th Sep 20255712 AMAQI
17th Sep 2025471 AMAQI
17th Sep 2025472 AMAQI
17th Sep 2025463 AMAQI
17th Sep 2025474 AMAQI

28°C24/33°C

17th Sep 2025495 AMAQI
17th Sep 2025486 AMAQI
17th Sep 2025577 AMAQI
17th Sep 2025648 AMAQI
17th Sep 2025549 AMAQI
17th Sep 20255810 AMAQI
17th Sep 20255111 AMAQI
17th Sep 20253812 PMAQI
17th Sep 2025371 PMAQI
17th Sep 2025452 PMAQI
17th Sep 2025433 PMAQI
17th Sep 2025424 PMAQI
17th Sep 2025405 PMAQI
17th Sep 2025426 PMAQI
17th Sep 2025447 PMAQI
17th Sep 2025508 PMAQI
17th Sep 2025539 PMAQI
17th Sep 20255410 PMAQI
17th Sep 20255411 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025501 AMAQI
18th Sep 2025482 AMAQI
18th Sep 2025483 AMAQI
18th Sep 2025484 AMAQI

27°C25/31°C

18th Sep 2025505 AMAQI
18th Sep 2025526 AMAQI
18th Sep 2025637 AMAQI
18th Sep 2025638 AMAQI
18th Sep 2025649 AMAQI
18th Sep 20256410 AMAQI
18th Sep 20255511 AMAQI
18th Sep 20255312 PMAQI
18th Sep 2025521 PMAQI
18th Sep 2025512 PMAQI
18th Sep 2025463 PMAQI
18th Sep 2025444 PMAQI
18th Sep 2025415 PMAQI
18th Sep 2025456 PMAQI
18th Sep 2025507 PMAQI
18th Sep 2025538 PMAQI
18th Sep 2025559 PMAQI
18th Sep 20255810 PMAQI
18th Sep 20255811 PMAQI
19th Sep 20255712 AMAQI
19th Sep 2025511 AMAQI
19th Sep 2025512 AMAQI
19th Sep 2025523 AMAQI
19th Sep 2025524 AMAQI

27°C25/30°C

19th Sep 2025535 AMAQI
19th Sep 2025546 AMAQI
19th Sep 2025667 AMAQI
19th Sep 2025688 AMAQI
19th Sep 2025679 AMAQI
19th Sep 20256310 AMAQI
19th Sep 20256111 AMAQI
19th Sep 20256112 PMAQI
19th Sep 2025531 PMAQI
19th Sep 2025512 PMAQI
19th Sep 2025453 PMAQI
19th Sep 2025434 PMAQI
19th Sep 2025425 PMAQI
19th Sep 2025486 PMAQI
19th Sep 2025527 PMAQI
19th Sep 2025538 PMAQI
19th Sep 2025549 PMAQI
19th Sep 20255410 PMAQI
19th Sep 20255311 PMAQI
20th Sep 20255412 AMAQI
20th Sep 2025531 AMAQI
20th Sep 2025532 AMAQI
20th Sep 2025543 AMAQI
20th Sep 2025534 AMAQI

28°C25/33°C

20th Sep 2025555 AMAQI
20th Sep 2025566 AMAQI
20th Sep 2025677 AMAQI
20th Sep 2025738 AMAQI
20th Sep 2025749 AMAQI
20th Sep 20258010 AMAQI
20th Sep 20256811 AMAQI
20th Sep 20256912 PMAQI
20th Sep 2025631 PMAQI
20th Sep 2025612 PMAQI
20th Sep 2025603 PMAQI
20th Sep 2025614 PMAQI
20th Sep 2025585 PMAQI
20th Sep 2025586 PMAQI
20th Sep 2025597 PMAQI
20th Sep 2025638 PMAQI
20th Sep 2025689 PMAQI
20th Sep 20257110 PMAQI
20th Sep 20256711 PMAQI
21st Sep 20256512 AMAQI
21st Sep 2025581 AMAQI
21st Sep 2025552 AMAQI
21st Sep 2025603 AMAQI
21st Sep 2025604 AMAQI

29°C25/35°C

21st Sep 2025605 AMAQI
21st Sep 2025606 AMAQI
21st Sep 2025747 AMAQI
21st Sep 2025808 AMAQI
21st Sep 2025819 AMAQI
21st Sep 20258310 AMAQI
21st Sep 20257311 AMAQI
21st Sep 20257312 PMAQI
21st Sep 2025711 PMAQI
21st Sep 2025752 PMAQI
21st Sep 2025703 PMAQI
21st Sep 2025674 PMAQI
21st Sep 2025655 PMAQI
21st Sep 2025656 PMAQI
21st Sep 2025667 PMAQI
21st Sep 2025648 PMAQI
21st Sep 2025679 PMAQI
21st Sep 20256510 PMAQI
21st Sep 20256411 PMAQI
22nd Sep 20256112 AMAQI
22nd Sep 2025581 AMAQI
22nd Sep 2025582 AMAQI
22nd Sep 2025613 AMAQI
22nd Sep 2025604 AMAQI

29°C26/35°C

22nd Sep 2025605 AMAQI
22nd Sep 2025656 AMAQI
22nd Sep 2025597 AMAQI
22nd Sep 2025598 AMAQI
22nd Sep 2025549 AMAQI
22nd Sep 20255310 AMAQI
22nd Sep 20255111 AMAQI
22nd Sep 20255012 PMAQI
22nd Sep 2025521 PMAQI
22nd Sep 2025562 PMAQI
22nd Sep 2025613 PMAQI
22nd Sep 2025554 PMAQI
22nd Sep 2025545 PMAQI
22nd Sep 2025576 PMAQI
22nd Sep 2025597 PMAQI
22nd Sep 2025578 PMAQI
22nd Sep 2025589 PMAQI
22nd Sep 20255910 PMAQI
22nd Sep 20256111 PMAQI
23rd Sep 20255912 AMAQI
23rd Sep 2025581 AMAQI
23rd Sep 2025572 AMAQI
23rd Sep 2025573 AMAQI
23rd Sep 2025574 AMAQI

28°C26/32°C

23rd Sep 2025585 AMAQI
23rd Sep 2025606 AMAQI
23rd Sep 2025677 AMAQI
23rd Sep 2025678 AMAQI
23rd Sep 2025689 AMAQI
23rd Sep 20256710 AMAQI
23rd Sep 20256111 AMAQI
23rd Sep 20255612 PMAQI
23rd Sep 2025601 PMAQI
23rd Sep 2025562 PMAQI
23rd Sep 2025543 PMAQI
23rd Sep 2025564 PMAQI
23rd Sep 2025575 PMAQI
23rd Sep 2025596 PMAQI
23rd Sep 2025687 PMAQI
23rd Sep 2025668 PMAQI
23rd Sep 2025679 PMAQI
23rd Sep 20256410 PMAQI
23rd Sep 20256611 PMAQI
24th Sep 20256512 AMAQI
24th Sep 2025571 AMAQI
24th Sep 2025582 AMAQI
24th Sep 2025583 AMAQI
24th Sep 2025574 AMAQI

28°C24/32°C

24th Sep 2025585 AMAQI
24th Sep 2025616 AMAQI
24th Sep 2025607 AMAQI
24th Sep 2025628 AMAQI
24th Sep 2025599 AMAQI
24th Sep 20255910 AMAQI
24th Sep 20255911 AMAQI
24th Sep 20255612 PMAQI
24th Sep 2025531 PMAQI
24th Sep 2025522 PMAQI
24th Sep 2025463 PMAQI
24th Sep 2025454 PMAQI
24th Sep 2025525 PMAQI
24th Sep 2025546 PMAQI
24th Sep 2025537 PMAQI
24th Sep 2025558 PMAQI
24th Sep 2025589 PMAQI
24th Sep 20256210 PMAQI
24th Sep 20255911 PMAQI
25th Sep 20256212 AMAQI
25th Sep 2025581 AMAQI
25th Sep 2025572 AMAQI
25th Sep 2025573 AMAQI
25th Sep 2025574 AMAQI

29°C24/34°C

25th Sep 2025585 AMAQI
25th Sep 2025606 AMAQI
25th Sep 2025577 AMAQI
25th Sep 2025568 AMAQI
25th Sep 2025509 AMAQI
25th Sep 20255510 AMAQI
25th Sep 20255211 AMAQI
25th Sep 20255512 PMAQI
25th Sep 2025551 PMAQI
25th Sep 2025542 PMAQI
25th Sep 2025503 PMAQI
25th Sep 2025464 PMAQI
25th Sep 2025435 PMAQI
25th Sep 2025406 PMAQI
25th Sep 2025427 PMAQI
25th Sep 2025408 PMAQI
25th Sep 2025369 PMAQI
25th Sep 20253510 PMAQI
25th Sep 20253911 PMAQI
26th Sep 20253912 AMAQI
26th Sep 2025411 AMAQI
26th Sep 2025412 AMAQI
26th Sep 2025443 AMAQI
26th Sep 2025464 AMAQI

25°C24/24°C

26th Sep 2025495 AMAQI
26th Sep 2025526 AMAQI
26th Sep 2025537 AMAQI
26th Sep 2025548 AMAQI
26th Sep 2025559 AMAQI
26th Sep 20255710 AMAQI
26th Sep 20256111 AMAQI
26th Sep 20256112 PMAQI
26th Sep 2025611 PMAQI
26th Sep 2025602 PMAQI
26th Sep 2025593 PMAQI
26th Sep 2025594 PMAQI
26th Sep 2025595 PMAQI
26th Sep 2025606 PMAQI
26th Sep 2025607 PMAQI
26th Sep 2025598 PMAQI
26th Sep 2025579 PMAQI
26th Sep 20255810 PMAQI
26th Sep 20256011 PMAQI
27th Sep 20255612 AMAQI
27th Sep 2025531 AMAQI
27th Sep 2025482 AMAQI
27th Sep 2025413 AMAQI
27th Sep 2025424 AMAQI

25°C23/28°C

27th Sep 2025425 AMAQI
27th Sep 2025446 AMAQI
27th Sep 2025437 AMAQI
27th Sep 2025398 AMAQI
27th Sep 2025429 AMAQI
27th Sep 20254610 AMAQI
27th Sep 20254411 AMAQI
27th Sep 20254512 PMAQI
27th Sep 2025401 PMAQI
27th Sep 2025352 PMAQI
27th Sep 2025323 PMAQI
27th Sep 2025264 PMAQI
27th Sep 2025275 PMAQI
27th Sep 2025296 PMAQI
27th Sep 2025347 PMAQI
27th Sep 2025388 PMAQI
27th Sep 2025449 PMAQI
27th Sep 20254510 PMAQI
27th Sep 20255511 PMAQI
28th Sep 20255812 AMAQI
28th Sep 2025561 AMAQI
28th Sep 2025572 AMAQI
28th Sep 2025573 AMAQI
28th Sep 2025534 AMAQI

27°C24/30°C

28th Sep 2025535 AMAQI
28th Sep 2025536 AMAQI
28th Sep 2025537 AMAQI
28th Sep 2025518 AMAQI
28th Sep 2025509 AMAQI
28th Sep 20255010 AMAQI
28th Sep 20255011 AMAQI
28th Sep 20254912 PMAQI
28th Sep 2025471 PMAQI
28th Sep 2025462 PMAQI
28th Sep 2025403 PMAQI
28th Sep 2025374 PMAQI
28th Sep 2025435 PMAQI
28th Sep 2025376 PMAQI
28th Sep 2025327 PMAQI
28th Sep 2025318 PMAQI
28th Sep 2025309 PMAQI
28th Sep 20253510 PMAQI
28th Sep 20253811 PMAQI
29th Sep 20254212 AMAQI
29th Sep 2025531 AMAQI
29th Sep 2025532 AMAQI
29th Sep 2025553 AMAQI
29th Sep 2025544 AMAQI

25°C23/30°C

29th Sep 2025545 AMAQI
29th Sep 2025536 AMAQI
29th Sep 2025527 AMAQI
29th Sep 2025528 AMAQI
29th Sep 2025479 AMAQI
29th Sep 20254010 AMAQI
29th Sep 20253811 AMAQI
29th Sep 20253912 PMAQI
29th Sep 2025401 PMAQI
29th Sep 2025372 PMAQI
29th Sep 2025383 PMAQI
29th Sep 2025444 PMAQI
29th Sep 2025445 PMAQI
29th Sep 2025466 PMAQI
29th Sep 2025447 PMAQI
29th Sep 2025448 PMAQI
29th Sep 2025459 PMAQI
29th Sep 20254210 PMAQI
29th Sep 20254311 PMAQI
30th Sep 20254412 AMAQI
30th Sep 2025441 AMAQI
30th Sep 2025452 AMAQI
30th Sep 2025413 AMAQI
30th Sep 2025384 AMAQI

25°C24/25°C

30th Sep 2025395 AMAQI
30th Sep 2025396 AMAQI
30th Sep 2025397 AMAQI
30th Sep 2025398 AMAQI
30th Sep 2025359 AMAQI
30th Sep 20254310 AMAQI
30th Sep 20254811 AMAQI
30th Sep 20255212 PMAQI
30th Sep 2025501 PMAQI
30th Sep 2025382 PMAQI
30th Sep 2025353 PMAQI
30th Sep 2025524 PMAQI
30th Sep 2025645 PMAQI
30th Sep 2025426 PMAQI
30th Sep 2025447 PMAQI
30th Sep 2025448 PMAQI
30th Sep 2025489 PMAQI
30th Sep 20254910 PMAQI
30th Sep 20255511 PMAQI
1st Oct 20255912 AMAQI
1st Oct 2025621 AMAQI
1st Oct 2025722 AMAQI
1st Oct 2025823 AMAQI
1st Oct 2025844 AMAQI

26°C25/30°C

1st Oct 2025845 AMAQI
1st Oct 2025796 AMAQI
1st Oct 2025777 AMAQI
1st Oct 2025778 AMAQI
1st Oct 2025759 AMAQI
1st Oct 20257210 AMAQI
1st Oct 20256211 AMAQI
1st Oct 20255912 PMAQI
1st Oct 2025581 PMAQI
1st Oct 2025592 PMAQI
1st Oct 2025593 PMAQI
1st Oct 2025604 PMAQI
1st Oct 2025635 PMAQI
1st Oct 2025626 PMAQI
1st Oct 2025647 PMAQI
1st Oct 2025658 PMAQI
1st Oct 2025759 PMAQI
1st Oct 20258310 PMAQI
1st Oct 20258311 PMAQI
2nd Oct 20258012 AMAQI
2nd Oct 2025811 AMAQI
2nd Oct 2025752 AMAQI
2nd Oct 2025873 AMAQI
2nd Oct 20251064 AMAQI

27°C24/30°C

2nd Oct 20251075 AMAQI
2nd Oct 2025916 AMAQI
2nd Oct 2025997 AMAQI
2nd Oct 2025978 AMAQI
2nd Oct 20251019 AMAQI
2nd Oct 20259410 AMAQI
2nd Oct 20258111 AMAQI
2nd Oct 20256812 PMAQI
2nd Oct 2025641 PMAQI
2nd Oct 2025622 PMAQI
2nd Oct 2025613 PMAQI
2nd Oct 2025594 PMAQI
2nd Oct 2025585 PMAQI
2nd Oct 2025596 PMAQI
2nd Oct 2025607 PMAQI
2nd Oct 2025618 PMAQI
2nd Oct 2025659 PMAQI
2nd Oct 20257610 PMAQI
2nd Oct 20257011 PMAQI
3rd Oct 20257112 AMAQI
3rd Oct 2025701 AMAQI
3rd Oct 2025692 AMAQI
3rd Oct 2025693 AMAQI
3rd Oct 2025724 AMAQI

27°C24/32°C

3rd Oct 2025755 AMAQI
3rd Oct 2025726 AMAQI
3rd Oct 2025687 AMAQI
3rd Oct 2025748 AMAQI
3rd Oct 2025709 AMAQI
3rd Oct 20257310 AMAQI
3rd Oct 20256711 AMAQI
3rd Oct 20256312 PMAQI
3rd Oct 2025631 PMAQI
3rd Oct 2025622 PMAQI
3rd Oct 2025603 PMAQI
3rd Oct 2025594 PMAQI
3rd Oct 2025605 PMAQI
3rd Oct 2025546 PMAQI
3rd Oct 2025717 PMAQI
3rd Oct 2025758 PMAQI
3rd Oct 2025809 PMAQI
3rd Oct 20258810 PMAQI
3rd Oct 20259511 PMAQI
4th Oct 20259312 AMAQI
4th Oct 2025961 AMAQI
4th Oct 2025892 AMAQI
4th Oct 2025843 AMAQI
4th Oct 2025824 AMAQI

28°C24/33°C

4th Oct 2025825 AMAQI
4th Oct 2025846 AMAQI
4th Oct 2025957 AMAQI
4th Oct 20251008 AMAQI
4th Oct 20251019 AMAQI
4th Oct 202510710 AMAQI
4th Oct 202510411 AMAQI
4th Oct 20259212 PMAQI
4th Oct 20251031 PMAQI
4th Oct 20251012 PMAQI
4th Oct 2025953 PMAQI
4th Oct 2025954 PMAQI
4th Oct 2025915 PMAQI
4th Oct 2025956 PMAQI
4th Oct 2025947 PMAQI
4th Oct 2025978 PMAQI
4th Oct 20251019 PMAQI
4th Oct 202510610 PMAQI
4th Oct 202511211 PMAQI
5th Oct 202510512 AMAQI
5th Oct 2025961 AMAQI
5th Oct 20251012 AMAQI
5th Oct 20251053 AMAQI
5th Oct 20251134 AMAQI

28°C24/32°C

5th Oct 20251245 AMAQI
5 AM
5th Oct 20251396 AMAQI
5th Oct 20251487 AMAQI
5th Oct 20251418 AMAQI
5th Oct 20251409 AMAQI
5th Oct 202513710 AMAQI
5th Oct 202513511 AMAQI
11 AM
5th Oct 202513312 PMAQI
5th Oct 20251231 PMAQI
5th Oct 20251052 PMAQI
5th Oct 2025963 PMAQI
5th Oct 2025924 PMAQI
5th Oct 2025905 PMAQI
5 PM
5th Oct 2025926 PMAQI
5th Oct 2025997 PMAQI
5th Oct 20251078 PMAQI
5th Oct 20251239 PMAQI
5th Oct 202513410 PMAQI
5th Oct 202514211 PMAQI
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 10 AM

58AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
3 PM - 5 PM

49AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 10 AM (Avg. 58), while the lowest AQI was between 3 PM to 5 PM (Avg. 49).
Night time
Avg. Highest Time
10 PM - 11 PM

60AQI

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

51AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 60), while the lowest AQI was between 6 PM to 6 PM (Avg. 51).

2025 Days Vs Air Quality

Hanoi, Ha Noi, Vietnam

2025

16%

43

62%

171

20%

55

3%

8

Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)

Good
43 Days
Moderate
171 Days
Poor
55 Days
Unhealthy
8 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 16%

Health Risk Level:

Extreme

In 2025, 16% of 278 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

Hanoi, Ha Noi, Vietnam

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
142AQI
2nd January 2025
179AQI
3rd January 2025
142AQI
4th January 2025
119AQI
5th January 2025
122AQI
6th January 2025
127AQI
7th January 2025
138AQI
8th January 2025
137AQI
9th January 2025
145AQI
10th January 2025
102AQI
11th January 2025
111AQI
12th January 2025
121AQI
13th January 2025
143AQI
14th January 2025
148AQI
15th January 2025
150AQI
16th January 2025
146AQI
17th January 2025
154AQI
18th January 2025
165AQI
19th January 2025
161AQI
20th January 2025
178AQI
21st January 2025
161AQI
22nd January 2025
159AQI
23rd January 2025
139AQI
24th January 2025
134AQI
25th January 2025
108AQI
26th January 2025
74AQI
27th January 2025
94AQI
28th January 2025
86AQI
29th January 2025
121AQI
30th January 2025
110AQI
31st January 2025
94AQI
1st February 2025
85AQI
2nd February 2025
73AQI
3rd February 2025
59AQI
4th February 2025
72AQI
5th February 2025
100AQI
6th February 2025
106AQI
7th February 2025
54AQI
8th February 2025
68AQI
9th February 2025
89AQI
10th February 2025
136AQI
11th February 2025
147AQI
12th February 2025
163AQI
13th February 2025
141AQI
14th February 2025
139AQI
15th February 2025
145AQI
16th February 2025
83AQI
17th February 2025
113AQI
18th February 2025
73AQI
19th February 2025
96AQI
20th February 2025
132AQI
21st February 2025
113AQI
22nd February 2025
132AQI
23rd February 2025
71AQI
24th February 2025
79AQI
25th February 2025
92AQI
26th February 2025
83AQI
27th February 2025
138AQI
28th February 2025
105AQI
1st March 2025
111AQI
2nd March 2025
87AQI
3rd March 2025
90AQI
4th March 2025
90AQI
5th March 2025
94AQI
6th March 2025
69AQI
7th March 2025
75AQI
8th March 2025
96AQI
9th March 2025
130AQI
10th March 2025
140AQI
11th March 2025
123AQI
12th March 2025
99AQI
13th March 2025
86AQI
14th March 2025
91AQI
15th March 2025
83AQI
16th March 2025
64AQI
17th March 2025
84AQI
18th March 2025
82AQI
19th March 2025
81AQI
20th March 2025
92AQI
21st March 2025
121AQI
22nd March 2025
118AQI
23rd March 2025
123AQI
24th March 2025
131AQI
25th March 2025
128AQI
26th March 2025
104AQI
27th March 2025
103AQI
28th March 2025
103AQI
29th March 2025
79AQI
30th March 2025
61AQI
31st March 2025
69AQI
1st April 2025
90AQI
2nd April 2025
119AQI
3rd April 2025
103AQI
4th April 2025
131AQI
5th April 2025
107AQI
6th April 2025
122AQI
7th April 2025
112AQI
8th April 2025
112AQI
9th April 2025
94AQI
10th April 2025
94AQI
11th April 2025
95AQI
12th April 2025
101AQI
13th April 2025
88AQI
14th April 2025
96AQI
15th April 2025
102AQI
16th April 2025
105AQI
17th April 2025
97AQI
18th April 2025
101AQI
19th April 2025
94AQI
20th April 2025
82AQI
21st April 2025
82AQI
22nd April 2025
90AQI
23rd April 2025
92AQI
24th April 2025
83AQI
25th April 2025
75AQI
26th April 2025
77AQI
27th April 2025
65AQI
28th April 2025
61AQI
29th April 2025
76AQI
30th April 2025
71AQI
1st May 2025
60AQI
2nd May 2025
79AQI
3rd May 2025
77AQI
4th May 2025
76AQI
5th May 2025
80AQI
6th May 2025
73AQI
7th May 2025
74AQI
8th May 2025
76AQI
9th May 2025
78AQI
10th May 2025
80AQI
11th May 2025
53AQI
12th May 2025
70AQI
13th May 2025
67AQI
14th May 2025
64AQI
15th May 2025
60AQI
16th May 2025
59AQI
17th May 2025
53AQI
18th May 2025
56AQI
19th May 2025
55AQI
20th May 2025
57AQI
21st May 2025
56AQI
22nd May 2025
56AQI
23rd May 2025
53AQI
24th May 2025
53AQI
25th May 2025
54AQI
26th May 2025
60AQI
27th May 2025
82AQI
28th May 2025
80AQI
29th May 2025
61AQI
30th May 2025
61AQI
31st May 2025
59AQI
1st June 2025
50AQI
2nd June 2025
52AQI
3rd June 2025
52AQI
4th June 2025
58AQI
5th June 2025
69AQI
6th June 2025
58AQI
7th June 2025
57AQI
8th June 2025
57AQI
9th June 2025
62AQI
10th June 2025
58AQI
11th June 2025
61AQI
12th June 2025
59AQI
13th June 2025
53AQI
14th June 2025
60AQI
15th June 2025
70AQI
16th June 2025
63AQI
17th June 2025
61AQI
18th June 2025
56AQI
19th June 2025
63AQI
20th June 2025
67AQI
21st June 2025
60AQI
22nd June 2025
57AQI
23rd June 2025
60AQI
24th June 2025
63AQI
25th June 2025
58AQI
26th June 2025
58AQI
27th June 2025
58AQI
28th June 2025
54AQI
29th June 2025
55AQI
30th June 2025
54AQI
1st July 2025
48AQI
2nd July 2025
48AQI
3rd July 2025
53AQI
4th July 2025
61AQI
5th July 2025
61AQI
6th July 2025
58AQI
7th July 2025
63AQI
8th July 2025
61AQI
9th July 2025
65AQI
10th July 2025
57AQI
11th July 2025
56AQI
12th July 2025
54AQI
13th July 2025
56AQI
14th July 2025
68AQI
15th July 2025
76AQI
16th July 2025
60AQI
17th July 2025
59AQI
18th July 2025
60AQI
19th July 2025
70AQI
20th July 2025
60AQI
21st July 2025
58AQI
22nd July 2025
45AQI
23rd July 2025
49AQI
24th July 2025
47AQI
25th July 2025
56AQI
26th July 2025
58AQI
27th July 2025
57AQI
28th July 2025
63AQI
29th July 2025
70AQI
30th July 2025
66AQI
31st July 2025
60AQI
1st August 2025
53AQI
2nd August 2025
54AQI
3rd August 2025
56AQI
4th August 2025
57AQI
5th August 2025
56AQI
6th August 2025
53AQI
7th August 2025
55AQI
8th August 2025
55AQI
9th August 2025
53AQI
10th August 2025
54AQI
11th August 2025
54AQI
12th August 2025
51AQI
13th August 2025
52AQI
14th August 2025
54AQI
15th August 2025
45AQI
16th August 2025
42AQI
17th August 2025
40AQI
18th August 2025
39AQI
19th August 2025
42AQI
20th August 2025
45AQI
21st August 2025
47AQI
22nd August 2025
47AQI
23rd August 2025
46AQI
24th August 2025
45AQI
25th August 2025
37AQI
26th August 2025
35AQI
27th August 2025
40AQI
28th August 2025
45AQI
29th August 2025
46AQI
30th August 2025
41AQI
31st August 2025
40AQI
1st September 2025
42AQI
2nd September 2025
42AQI
3rd September 2025
41AQI
4th September 2025
47AQI
5th September 2025
41AQI
6th September 2025
41AQI
7th September 2025
50AQI
8th September 2025
56AQI
9th September 2025
48AQI
10th September 2025
51AQI
11th September 2025
45AQI
12th September 2025
42AQI
13th September 2025
40AQI
14th September 2025
41AQI
15th September 2025
44AQI
16th September 2025
48AQI
17th September 2025
49AQI
18th September 2025
52AQI
19th September 2025
54AQI
20th September 2025
61AQI
21st September 2025
66AQI
22nd September 2025
58AQI
23rd September 2025
61AQI
24th September 2025
57AQI
25th September 2025
50AQI
26th September 2025
52AQI
27th September 2025
43AQI
28th September 2025
47AQI
29th September 2025
44AQI
30th September 2025
44AQI
1st October 2025
69AQI
2nd October 2025
78AQI
3rd October 2025
71AQI
4th October 2025
93AQI
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

133AQI

103AQI

97AQI

94AQI

65AQI

59AQI

59AQI

48AQI

49AQI

78AQI

No. of days

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

202578AQI

4
20
7
15
12
1
19
12
19
11
31
1
29
5
26
17
14
20
10
4
43
171
55
8

Highest AQI recorded in

January

133AQI

Lowest AQI recorded in

August

48AQI

202478AQI

1
21
9
4
15
9
1
21
9
1
19
11
1
27
3
30
8
23
30
1
9
13
5
3
7
11
11
2
1
27
2
16
14
1
61
224
73
8

Highest AQI recorded in

December

102AQI

Lowest AQI recorded in

August

37AQI

202378AQI

13
17
1
13
15
1
18
12
2
20
8
8
23
10
20
15
16
8
21
2
5
23
2
2
24
5
4
16
9
1
22
8
56
229
78
1

Highest AQI recorded in

January

108AQI

Lowest AQI recorded in

July

53AQI

202257AQI

6
15
7
3
14
7
1
12
19
18
12
27
4
23
7
22
2
3
13
16
25
6
5
20
5
4
12
15
172
120
28
3

Highest AQI recorded in

December

91AQI

Lowest AQI recorded in

August

22AQI

202171AQI

1
8
10
11
1
1
15
12
3
23
5
9
19
2
15
15
1
13
16
1
21
10
21
9
1
15
15
15
14
2
8
13
8
1
15
12
4
122
172
54
16
1

Highest AQI recorded in

January

136AQI

Lowest AQI recorded in

July

41AQI

202074AQI

6
7
6
13
2
8
10
7
15
8
23
8
20
11
16
14
16
15
30
2
14
14
1
84
127
52
3

Highest AQI recorded in

April

119AQI

Lowest AQI recorded in

August

49AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
78AQI
Least Polluted Year Recorded
2022(Avg.)
57AQI

Hanoi's annual 2025 AQI (78) shows an average percentage change of 10.9% (worsened AQI) compared to previous years: 2020 (74), 2021 (71), 2022 (57), 2023 (78), 2024 (78).