Hanoi Environmental Protection Department, 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 Environmental Protection Department, Hanoi, Ha Noi, Vietnam
2021
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Oct 2024
176AQILowest AQI recorded on
15th Oct 2021
19AQISame Day Analysis (10th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 121 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Oct - 11th Oct 2025
Hanoi Environmental Protection Department, Hanoi, Ha Noi, Vietnam
AQI
Day
Night
.
5 AM10th Oct 2025
5 PM
4 AM11th Oct 2025
Day time
Avg. Highest Time
10AM10th Oct
163AQI
Avg. Lowest Time
3PM10th Oct
97AQI
Night time
Avg. Highest Time
12AM11th Oct
140AQI
Avg. Lowest Time
3AM11th Oct
91AQI
In the last 24 hours,
Hanoi Environmental Protection Department's AQI reached its highest point of 163 at 10 AM during the Day, while the lowest point, 91, was recorded at 3 AM during the Night between 10th Oct and 11th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hanoi Environmental Protection Department, Hanoi, Ha Noi, Vietnam
SepOct
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
11th Sep 2025525 AMAQI
11th Sep 2025536 AMAQI
11th Sep 2025297 AMAQI
11th Sep 2025288 AMAQI
11th Sep 2025329 AMAQI
11th Sep 20253910 AMAQI
11th Sep 20253811 AMAQI
11th Sep 20253712 PMAQI
11th Sep 2025331 PMAQI
11th Sep 2025392 PMAQI
11th Sep 2025303 PMAQI
11th Sep 2025344 PMAQI
11th Sep 2025355 PMAQI
11th Sep 2025476 PMAQI
11th Sep 2025587 PMAQI
11th Sep 2025508 PMAQI
11th Sep 2025509 PMAQI
11th Sep 20254810 PMAQI
11th Sep 20254611 PMAQI
12th Sep 20255012 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025502 AMAQI
12th Sep 2025503 AMAQI
12th Sep 2025504 AMAQI
28°C25/33°C
12th Sep 2025515 AMAQI
12th Sep 2025526 AMAQI
12th Sep 2025287 AMAQI
12th Sep 2025388 AMAQI
12th Sep 2025249 AMAQI
12th Sep 20253310 AMAQI
12th Sep 20253311 AMAQI
12th Sep 20253612 PMAQI
12th Sep 2025301 PMAQI
12th Sep 2025332 PMAQI
12th Sep 2025243 PMAQI
12th Sep 2025304 PMAQI
12th Sep 2025375 PMAQI
12th Sep 2025426 PMAQI
12th Sep 2025417 PMAQI
12th Sep 2025428 PMAQI
12th Sep 2025359 PMAQI
12th Sep 20254410 PMAQI
12th Sep 20254711 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 2025267 AMAQI
13th Sep 2025268 AMAQI
13th Sep 2025409 AMAQI
13th Sep 20253410 AMAQI
13th Sep 20253511 AMAQI
13th Sep 20253012 PMAQI
13th Sep 2025261 PMAQI
13th Sep 2025352 PMAQI
13th Sep 2025183 PMAQI
13th Sep 2025264 PMAQI
13th Sep 2025265 PMAQI
13th Sep 2025396 PMAQI
13th Sep 2025407 PMAQI
13th Sep 2025438 PMAQI
13th Sep 2025469 PMAQI
13th Sep 20253910 PMAQI
13th Sep 20254011 PMAQI
14th Sep 20254812 AMAQI
14th Sep 2025481 AMAQI
14th Sep 2025442 AMAQI
14th Sep 2025423 AMAQI
14th Sep 2025444 AMAQI
28°C25/33°C
14th Sep 2025445 AMAQI
14th Sep 2025446 AMAQI
14th Sep 2025317 AMAQI
14th Sep 2025308 AMAQI
14th Sep 2025309 AMAQI
14th Sep 20253410 AMAQI
14th Sep 20253411 AMAQI
14th Sep 20252612 PMAQI
14th Sep 2025381 PMAQI
14th Sep 2025342 PMAQI
14th Sep 2025333 PMAQI
14th Sep 2025384 PMAQI
14th Sep 2025245 PMAQI
14th Sep 2025346 PMAQI
14th Sep 2025447 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025479 PMAQI
14th Sep 20255210 PMAQI
14th Sep 20255111 PMAQI
15th Sep 20255312 AMAQI
15th Sep 2025471 AMAQI
15th Sep 2025452 AMAQI
15th Sep 2025423 AMAQI
15th Sep 2025434 AMAQI
28°C25/33°C
15th Sep 2025435 AMAQI
15th Sep 2025436 AMAQI
15th Sep 2025317 AMAQI
15th Sep 2025388 AMAQI
15th Sep 2025429 AMAQI
15th Sep 20254110 AMAQI
15th Sep 20253511 AMAQI
15th Sep 20254212 PMAQI
15th Sep 2025371 PMAQI
15th Sep 2025542 PMAQI
15th Sep 2025483 PMAQI
15th Sep 2025484 PMAQI
15th Sep 2025535 PMAQI
15th Sep 2025536 PMAQI
15th Sep 2025457 PMAQI
15th Sep 2025448 PMAQI
15th Sep 2025429 PMAQI
15th Sep 20255210 PMAQI
15th Sep 20254311 PMAQI
16th Sep 20254612 AMAQI
16th Sep 2025461 AMAQI
16th Sep 2025452 AMAQI
16th Sep 2025423 AMAQI
16th Sep 2025434 AMAQI
28°C25/31°C
16th Sep 2025455 AMAQI
16th Sep 2025446 AMAQI
16th Sep 2025497 AMAQI
16th Sep 2025578 AMAQI
16th Sep 2025579 AMAQI
16th Sep 20255110 AMAQI
16th Sep 20255411 AMAQI
16th Sep 20254812 PMAQI
16th Sep 2025461 PMAQI
16th Sep 2025402 PMAQI
16th Sep 2025453 PMAQI
16th Sep 2025484 PMAQI
16th Sep 2025525 PMAQI
16th Sep 2025526 PMAQI
16th Sep 2025507 PMAQI
16th Sep 2025578 PMAQI
16th Sep 2025509 PMAQI
16th Sep 20256010 PMAQI
16th Sep 20255411 PMAQI
17th Sep 20255612 AMAQI
17th Sep 2025461 AMAQI
17th Sep 2025482 AMAQI
17th Sep 2025483 AMAQI
17th Sep 2025484 AMAQI
28°C24/33°C
17th Sep 2025495 AMAQI
17th Sep 2025486 AMAQI
17th Sep 2025587 AMAQI
17th Sep 2025668 AMAQI
17th Sep 2025569 AMAQI
17th Sep 20256410 AMAQI
17th Sep 20255011 AMAQI
17th Sep 20253812 PMAQI
17th Sep 2025351 PMAQI
17th Sep 2025442 PMAQI
17th Sep 2025433 PMAQI
17th Sep 2025394 PMAQI
17th Sep 2025445 PMAQI
17th Sep 2025436 PMAQI
17th Sep 2025467 PMAQI
17th Sep 2025558 PMAQI
17th Sep 2025579 PMAQI
17th Sep 20255810 PMAQI
17th Sep 20255811 PMAQI
18th Sep 20255812 AMAQI
18th Sep 2025531 AMAQI
18th Sep 2025522 AMAQI
18th Sep 2025523 AMAQI
18th Sep 2025524 AMAQI
27°C25/31°C
18th Sep 2025525 AMAQI
18th Sep 2025526 AMAQI
18th Sep 2025687 AMAQI
18th Sep 2025708 AMAQI
18th Sep 2025679 AMAQI
18th Sep 20256610 AMAQI
18th Sep 20256111 AMAQI
18th Sep 20256012 PMAQI
18th Sep 2025601 PMAQI
18th Sep 2025542 PMAQI
18th Sep 2025513 PMAQI
18th Sep 2025504 PMAQI
18th Sep 2025545 PMAQI
18th Sep 2025586 PMAQI
18th Sep 2025587 PMAQI
18th Sep 2025598 PMAQI
18th Sep 2025629 PMAQI
18th Sep 20256310 PMAQI
18th Sep 20256411 PMAQI
19th Sep 20256212 AMAQI
19th Sep 2025541 AMAQI
19th Sep 2025552 AMAQI
19th Sep 2025553 AMAQI
19th Sep 2025554 AMAQI
27°C25/30°C
19th Sep 2025565 AMAQI
19th Sep 2025556 AMAQI
19th Sep 2025707 AMAQI
19th Sep 2025748 AMAQI
19th Sep 2025729 AMAQI
19th Sep 20257010 AMAQI
19th Sep 20257011 AMAQI
19th Sep 20257412 PMAQI
19th Sep 2025591 PMAQI
19th Sep 2025552 PMAQI
19th Sep 2025443 PMAQI
19th Sep 2025424 PMAQI
19th Sep 2025395 PMAQI
19th Sep 2025606 PMAQI
19th Sep 2025657 PMAQI
19th Sep 2025668 PMAQI
19th Sep 2025639 PMAQI
19th Sep 20255910 PMAQI
19th Sep 20255611 PMAQI
20th Sep 20255912 AMAQI
20th Sep 2025561 AMAQI
20th Sep 2025562 AMAQI
20th Sep 2025573 AMAQI
20th Sep 2025574 AMAQI
28°C25/33°C
20th Sep 2025585 AMAQI
20th Sep 2025586 AMAQI
20th Sep 2025647 AMAQI
20th Sep 2025708 AMAQI
20th Sep 2025749 AMAQI
20th Sep 20258210 AMAQI
20th Sep 20257511 AMAQI
20th Sep 20258212 PMAQI
20th Sep 2025741 PMAQI
20th Sep 2025652 PMAQI
20th Sep 2025683 PMAQI
20th Sep 2025764 PMAQI
20th Sep 2025735 PMAQI
20th Sep 2025706 PMAQI
20th Sep 2025667 PMAQI
20th Sep 2025688 PMAQI
20th Sep 2025739 PMAQI
20th Sep 20257410 PMAQI
20th Sep 20257411 PMAQI
21st Sep 20256612 AMAQI
21st Sep 2025601 AMAQI
21st Sep 2025582 AMAQI
21st Sep 2025613 AMAQI
21st Sep 2025614 AMAQI
29°C25/35°C
21st Sep 2025625 AMAQI
21st Sep 2025626 AMAQI
21st Sep 2025777 AMAQI
21st Sep 2025878 AMAQI
21st Sep 2025899 AMAQI
21st Sep 20259210 AMAQI
21st Sep 20258511 AMAQI
21st Sep 20258212 PMAQI
21st Sep 2025761 PMAQI
21st Sep 2025832 PMAQI
21st Sep 2025713 PMAQI
21st Sep 2025764 PMAQI
21st Sep 2025785 PMAQI
21st Sep 2025736 PMAQI
21st Sep 2025697 PMAQI
21st Sep 2025718 PMAQI
21st Sep 2025749 PMAQI
21st Sep 20257410 PMAQI
21st Sep 20257311 PMAQI
22nd Sep 20256612 AMAQI
22nd Sep 2025601 AMAQI
22nd Sep 2025622 AMAQI
22nd Sep 2025633 AMAQI
22nd Sep 2025644 AMAQI
29°C26/35°C
22nd Sep 2025645 AMAQI
22nd Sep 2025676 AMAQI
22nd Sep 2025637 AMAQI
22nd Sep 2025638 AMAQI
22nd Sep 2025609 AMAQI
22nd Sep 20255410 AMAQI
22nd Sep 20255011 AMAQI
22nd Sep 20255212 PMAQI
22nd Sep 2025581 PMAQI
22nd Sep 2025662 PMAQI
22nd Sep 2025743 PMAQI
22nd Sep 2025544 PMAQI
22nd Sep 2025665 PMAQI
22nd Sep 2025806 PMAQI
22nd Sep 2025687 PMAQI
22nd Sep 2025658 PMAQI
22nd Sep 2025639 PMAQI
22nd Sep 20256410 PMAQI
22nd Sep 20256611 PMAQI
23rd Sep 20256312 AMAQI
23rd Sep 2025621 AMAQI
23rd Sep 2025612 AMAQI
23rd Sep 2025623 AMAQI
23rd Sep 2025604 AMAQI
28°C26/32°C
23rd Sep 2025625 AMAQI
23rd Sep 2025636 AMAQI
23rd Sep 2025677 AMAQI
23rd Sep 2025728 AMAQI
23rd Sep 2025789 AMAQI
23rd Sep 20257510 AMAQI
23rd Sep 20256511 AMAQI
23rd Sep 20256312 PMAQI
23rd Sep 2025721 PMAQI
23rd Sep 2025662 PMAQI
23rd Sep 2025623 PMAQI
23rd Sep 2025614 PMAQI
23rd Sep 2025705 PMAQI
23rd Sep 2025666 PMAQI
23rd Sep 2025647 PMAQI
23rd Sep 2025688 PMAQI
23rd Sep 2025769 PMAQI
23rd Sep 20256810 PMAQI
23rd Sep 20256711 PMAQI
24th Sep 20257212 AMAQI
24th Sep 2025611 AMAQI
24th Sep 2025622 AMAQI
24th Sep 2025623 AMAQI
24th Sep 2025624 AMAQI
28°C24/32°C
24th Sep 2025635 AMAQI
24th Sep 2025636 AMAQI
24th Sep 2025627 AMAQI
24th Sep 2025668 AMAQI
24th Sep 2025659 AMAQI
24th Sep 20256010 AMAQI
24th Sep 20257111 AMAQI
24th Sep 20256012 PMAQI
24th Sep 2025571 PMAQI
24th Sep 2025562 PMAQI
24th Sep 2025543 PMAQI
24th Sep 2025554 PMAQI
24th Sep 2025625 PMAQI
24th Sep 2025646 PMAQI
24th Sep 2025597 PMAQI
24th Sep 2025618 PMAQI
24th Sep 2025629 PMAQI
24th Sep 20256710 PMAQI
24th Sep 20256711 PMAQI
25th Sep 20257112 AMAQI
25th Sep 2025621 AMAQI
25th Sep 2025622 AMAQI
25th Sep 2025613 AMAQI
25th Sep 2025614 AMAQI
29°C24/34°C
25th Sep 2025625 AMAQI
25th Sep 2025636 AMAQI
25th Sep 2025627 AMAQI
25th Sep 2025598 AMAQI
25th Sep 2025569 AMAQI
25th Sep 20256510 AMAQI
25th Sep 20256711 AMAQI
25th Sep 20256812 PMAQI
25th Sep 2025691 PMAQI
25th Sep 2025612 PMAQI
25th Sep 2025523 PMAQI
25th Sep 2025524 PMAQI
25th Sep 2025515 PMAQI
25th Sep 2025496 PMAQI
25th Sep 2025567 PMAQI
25th Sep 2025538 PMAQI
25th Sep 2025389 PMAQI
25th Sep 20253210 PMAQI
25th Sep 20253611 PMAQI
26th Sep 20253812 AMAQI
26th Sep 2025371 AMAQI
26th Sep 2025412 AMAQI
26th Sep 2025443 AMAQI
26th Sep 2025484 AMAQI
25°C24/24°C
26th Sep 2025555 AMAQI
26th Sep 2025506 AMAQI
26th Sep 2025517 AMAQI
26th Sep 2025528 AMAQI
26th Sep 2025459 AMAQI
26th Sep 20255310 AMAQI
26th Sep 20256511 AMAQI
26th Sep 20256312 PMAQI
26th Sep 2025621 PMAQI
26th Sep 2025682 PMAQI
26th Sep 2025643 PMAQI
26th Sep 2025644 PMAQI
26th Sep 2025645 PMAQI
26th Sep 2025696 PMAQI
26th Sep 2025707 PMAQI
26th Sep 2025688 PMAQI
26th Sep 2025739 PMAQI
26th Sep 20257810 PMAQI
26th Sep 20258811 PMAQI
27th Sep 20258412 AMAQI
27th Sep 2025741 AMAQI
27th Sep 2025702 AMAQI
27th Sep 2025623 AMAQI
27th Sep 2025614 AMAQI
25°C23/28°C
27th Sep 2025625 AMAQI
27th Sep 2025606 AMAQI
27th Sep 2025567 AMAQI
27th Sep 2025568 AMAQI
27th Sep 2025549 AMAQI
27th Sep 20255610 AMAQI
27th Sep 20256111 AMAQI
27th Sep 20256212 PMAQI
27th Sep 2025601 PMAQI
27th Sep 2025572 PMAQI
27th Sep 2025583 PMAQI
27th Sep 2025514 PMAQI
27th Sep 2025565 PMAQI
27th Sep 2025606 PMAQI
27th Sep 2025637 PMAQI
27th Sep 2025648 PMAQI
27th Sep 2025679 PMAQI
27th Sep 20256910 PMAQI
27th Sep 20257511 PMAQI
28th Sep 20257512 AMAQI
28th Sep 2025691 AMAQI
28th Sep 2025662 AMAQI
28th Sep 2025623 AMAQI
28th Sep 2025614 AMAQI
27°C24/30°C
28th Sep 2025625 AMAQI
28th Sep 2025646 AMAQI
28th Sep 2025657 AMAQI
28th Sep 2025628 AMAQI
28th Sep 2025579 AMAQI
28th Sep 20256010 AMAQI
28th Sep 20256411 AMAQI
28th Sep 20255812 PMAQI
28th Sep 2025581 PMAQI
28th Sep 2025612 PMAQI
28th Sep 2025603 PMAQI
28th Sep 2025614 PMAQI
28th Sep 2025645 PMAQI
28th Sep 2025556 PMAQI
28th Sep 2025487 PMAQI
28th Sep 2025428 PMAQI
28th Sep 2025439 PMAQI
28th Sep 20255310 PMAQI
28th Sep 20255611 PMAQI
29th Sep 20254912 AMAQI
29th Sep 2025421 AMAQI
29th Sep 2025492 AMAQI
29th Sep 2025583 AMAQI
29th Sep 2025574 AMAQI
25°C23/30°C
29th Sep 2025635 AMAQI
29th Sep 2025516 AMAQI
29th Sep 2025487 AMAQI
29th Sep 2025498 AMAQI
29th Sep 2025379 AMAQI
29th Sep 20253510 AMAQI
29th Sep 20254311 AMAQI
29th Sep 20255112 PMAQI
29th Sep 2025531 PMAQI
29th Sep 2025492 PMAQI
29th Sep 2025403 PMAQI
29th Sep 2025374 PMAQI
29th Sep 2025505 PMAQI
29th Sep 2025556 PMAQI
29th Sep 2025527 PMAQI
29th Sep 2025458 PMAQI
29th Sep 2025439 PMAQI
29th Sep 20253810 PMAQI
29th Sep 20253911 PMAQI
30th Sep 20254212 AMAQI
30th Sep 2025391 AMAQI
30th Sep 2025462 AMAQI
30th Sep 2025353 AMAQI
30th Sep 2025364 AMAQI
25°C24/25°C
30th Sep 2025365 AMAQI
30th Sep 2025386 AMAQI
30th Sep 2025427 AMAQI
30th Sep 2025388 AMAQI
30th Sep 2025299 AMAQI
30th Sep 20254110 AMAQI
30th Sep 20255111 AMAQI
30th Sep 20254812 PMAQI
30th Sep 2025521 PMAQI
30th Sep 2025312 PMAQI
30th Sep 2025293 PMAQI
30th Sep 2025464 PMAQI
30th Sep 2025625 PMAQI
30th Sep 2025376 PMAQI
30th Sep 2025417 PMAQI
30th Sep 2025398 PMAQI
30th Sep 2025409 PMAQI
30th Sep 20254010 PMAQI
30th Sep 20254711 PMAQI
1st Oct 20254912 AMAQI
1st Oct 2025531 AMAQI
1st Oct 2025642 AMAQI
1st Oct 2025783 AMAQI
1st Oct 2025784 AMAQI
26°C25/30°C
1st Oct 2025805 AMAQI
1st Oct 2025726 AMAQI
1st Oct 2025717 AMAQI
1st Oct 2025728 AMAQI
1st Oct 2025749 AMAQI
1st Oct 20256710 AMAQI
1st Oct 20255911 AMAQI
1st Oct 20256412 PMAQI
1st Oct 2025631 PMAQI
1st Oct 2025672 PMAQI
1st Oct 2025663 PMAQI
1st Oct 2025644 PMAQI
1st Oct 2025695 PMAQI
1st Oct 2025636 PMAQI
1st Oct 2025617 PMAQI
1st Oct 2025598 PMAQI
1st Oct 2025669 PMAQI
1st Oct 20257010 PMAQI
1st Oct 20257611 PMAQI
2nd Oct 20257612 AMAQI
2nd Oct 2025781 AMAQI
2nd Oct 2025732 AMAQI
2nd Oct 2025713 AMAQI
2nd Oct 2025824 AMAQI
27°C24/30°C
2nd Oct 20251135 AMAQI
2nd Oct 2025786 AMAQI
2nd Oct 2025787 AMAQI
2nd Oct 2025818 AMAQI
2nd Oct 20251019 AMAQI
2nd Oct 202510810 AMAQI
2nd Oct 202510211 AMAQI
2nd Oct 20257212 PMAQI
2nd Oct 2025681 PMAQI
2nd Oct 2025622 PMAQI
2nd Oct 2025633 PMAQI
2nd Oct 2025594 PMAQI
2nd Oct 2025595 PMAQI
2nd Oct 2025626 PMAQI
2nd Oct 2025657 PMAQI
2nd Oct 2025618 PMAQI
2nd Oct 2025719 PMAQI
2nd Oct 20258210 PMAQI
2nd Oct 20257611 PMAQI
3rd Oct 20258412 AMAQI
3rd Oct 2025721 AMAQI
3rd Oct 2025642 AMAQI
3rd Oct 2025663 AMAQI
3rd Oct 2025724 AMAQI
27°C24/32°C
3rd Oct 2025855 AMAQI
3rd Oct 2025816 AMAQI
3rd Oct 2025717 AMAQI
3rd Oct 2025648 AMAQI
3rd Oct 2025689 AMAQI
3rd Oct 20257110 AMAQI
3rd Oct 20256911 AMAQI
3rd Oct 20256612 PMAQI
3rd Oct 2025651 PMAQI
3rd Oct 2025622 PMAQI
3rd Oct 2025573 PMAQI
3rd Oct 2025574 PMAQI
3rd Oct 2025595 PMAQI
3rd Oct 2025536 PMAQI
3rd Oct 2025677 PMAQI
3rd Oct 2025718 PMAQI
3rd Oct 2025749 PMAQI
3rd Oct 20258610 PMAQI
3rd Oct 20259011 PMAQI
4th Oct 20258212 AMAQI
4th Oct 2025831 AMAQI
4th Oct 2025802 AMAQI
4th Oct 2025903 AMAQI
4th Oct 2025884 AMAQI
28°C24/33°C
4th Oct 2025865 AMAQI
4th Oct 2025906 AMAQI
4th Oct 2025927 AMAQI
4th Oct 2025948 AMAQI
4th Oct 2025979 AMAQI
4th Oct 202511410 AMAQI
4th Oct 202511011 AMAQI
4th Oct 20259912 PMAQI
4th Oct 2025981 PMAQI
4th Oct 2025932 PMAQI
4th Oct 20251003 PMAQI
4th Oct 2025904 PMAQI
4th Oct 2025935 PMAQI
4th Oct 20251066 PMAQI
4th Oct 20251057 PMAQI
4th Oct 20251068 PMAQI
4th Oct 20251109 PMAQI
4th Oct 202512210 PMAQI
4th Oct 202511411 PMAQI
5th Oct 202510212 AMAQI
5th Oct 2025911 AMAQI
5th Oct 2025932 AMAQI
5th Oct 20251043 AMAQI
5th Oct 20251124 AMAQI
28°C24/32°C
5th Oct 20251395 AMAQI
5th Oct 20251416 AMAQI
5th Oct 20251497 AMAQI
5th Oct 20251468 AMAQI
5th Oct 20251469 AMAQI
5th Oct 202513310 AMAQI
5th Oct 202513111 AMAQI
5th Oct 202513512 PMAQI
5th Oct 20251291 PMAQI
5th Oct 20251062 PMAQI
5th Oct 20251153 PMAQI
5th Oct 20251154 PMAQI
5th Oct 20251035 PMAQI
5th Oct 2025926 PMAQI
5th Oct 2025897 PMAQI
5th Oct 20251168 PMAQI
5th Oct 20251379 PMAQI
5th Oct 202513910 PMAQI
5th Oct 202513311 PMAQI
6th Oct 202515312 AMAQI
6th Oct 20251521 AMAQI
6th Oct 20251632 AMAQI
6th Oct 20251613 AMAQI
6th Oct 20251584 AMAQI
29°C25/34°C
6th Oct 20251545 AMAQI
6th Oct 20251506 AMAQI
6th Oct 20251467 AMAQI
6th Oct 20251438 AMAQI
6th Oct 20251289 AMAQI
6th Oct 202514110 AMAQI
6th Oct 202511411 AMAQI
6th Oct 202511212 PMAQI
6th Oct 20251071 PMAQI
6th Oct 20251032 PMAQI
6th Oct 2025703 PMAQI
6th Oct 2025674 PMAQI
6th Oct 2025675 PMAQI
6th Oct 2025616 PMAQI
6th Oct 2025627 PMAQI
6th Oct 2025568 PMAQI
6th Oct 2025529 PMAQI
6th Oct 20256210 PMAQI
6th Oct 20256511 PMAQI
7th Oct 20256812 AMAQI
25°C24/27°C
7th Oct 2025706 PMAQI
7th Oct 2025537 PMAQI
7th Oct 2025588 PMAQI
7th Oct 2025589 PMAQI
7th Oct 20255610 PMAQI
7th Oct 20256611 PMAQI
8th Oct 20257012 AMAQI
8th Oct 2025601 AMAQI
8th Oct 2025572 AMAQI
8th Oct 2025573 AMAQI
8th Oct 2025584 AMAQI
25°C24/28°C
8th Oct 2025585 AMAQI
8th Oct 2025386 AMAQI
8th Oct 2025517 AMAQI
8th Oct 2025618 AMAQI
8th Oct 2025759 AMAQI
8th Oct 20257310 AMAQI
8th Oct 20257811 AMAQI
8th Oct 20257912 PMAQI
8th Oct 2025761 PMAQI
8th Oct 2025662 PMAQI
8th Oct 2025843 PMAQI
8th Oct 20251014 PMAQI
8th Oct 20251025 PMAQI
8th Oct 20251026 PMAQI
8th Oct 2025687 PMAQI
8th Oct 2025798 PMAQI
8th Oct 2025809 PMAQI
8th Oct 20258610 PMAQI
8th Oct 20258611 PMAQI
9th Oct 20259312 AMAQI
9th Oct 20251181 AMAQI
9th Oct 20251112 AMAQI
9th Oct 20251463 AMAQI
9th Oct 20251404 AMAQI
27°C24/32°C
9th Oct 20251385 AMAQI
9th Oct 20251226 AMAQI
9th Oct 20251147 AMAQI
9th Oct 20251248 AMAQI
9th Oct 20251549 AMAQI
9th Oct 202514610 AMAQI
9th Oct 202514211 AMAQI
9th Oct 202511112 PMAQI
9th Oct 20251091 PMAQI
9th Oct 2025992 PMAQI
9th Oct 20251063 PMAQI
9th Oct 20251134 PMAQI
9th Oct 20251055 PMAQI
9th Oct 20251036 PMAQI
9th Oct 2025987 PMAQI
9th Oct 20251128 PMAQI
9th Oct 20251229 PMAQI
9th Oct 202513710 PMAQI
9th Oct 202512011 PMAQI
10th Oct 202511312 AMAQI
10th Oct 20251081 AMAQI
10th Oct 20251162 AMAQI
10th Oct 20251193 AMAQI
10th Oct 20251264 AMAQI
27°C24/32°C
10th Oct 20251305 AMAQI
10th Oct 20251246 AMAQI
10th Oct 20251457 AMAQI
10th Oct 20251458 AMAQI
10th Oct 20251619 AMAQI
10th Oct 202516310 AMAQI
10th Oct 202516211 AMAQI
10th Oct 202514712 PMAQI
10th Oct 20251271 PMAQI
10th Oct 20251042 PMAQI
10th Oct 2025973 PMAQI
10th Oct 20251094 PMAQI
10th Oct 20251005 PMAQI
10th Oct 20251136 PMAQI
10th Oct 20251097 PMAQI
10th Oct 20251188 PMAQI
10th Oct 20251269 PMAQI
10th Oct 202513210 PMAQI
10th Oct 202512711 PMAQI
11th Oct 202514012 AMAQI
11th Oct 20251391 AMAQI
11th Oct 20251012 AMAQI
11th Oct 2025913 AMAQI
11th Oct 20251024 AMAQI
28°C24/33°C
11th Oct 20251025 AMAQI
5 AM11th Oct 20251046 AMAQI
11th Oct 20251057 AMAQI
11th Oct 20251148 AMAQI
11th Oct 20251109 AMAQI
11th Oct 202516010 AMAQI
11th Oct 202516011 AMAQI
11 AM11th Oct 202514612 PMAQI
11th Oct 20251241 PMAQI
11th Oct 20251332 PMAQI
11th Oct 2025893 PMAQI
11th Oct 2025854 PMAQI
11th Oct 2025955 PMAQI
5 PM11th Oct 20251066 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
10 AM - 11 AM
75AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
3 PM - 4 PM
62AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 11 AM (Avg. 75), while the lowest AQI was between 3 PM to 4 PM (Avg. 62).
Night time
Avg. Highest Time
12 AM
71AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 PM
63AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 71), while the lowest AQI was between 7 PM to 7 PM (Avg. 63).
2025 Days Vs Air Quality
Hanoi Environmental Protection Department, Hanoi, Ha Noi, Vietnam
2025
12%
35
65%
183
19%
54
4%
11
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Good
35 DaysModerate
183 DaysPoor
54 DaysUnhealthy
11 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 12%
Health Risk Level:
Extreme
In 2025, 12% of 284 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 Environmental Protection Department, 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
132AQI
132AQI
2nd January 2025
162AQI
162AQI
3rd January 2025
129AQI
129AQI
4th January 2025
101AQI
101AQI
5th January 2025
99AQI
99AQI
6th January 2025
103AQI
103AQI
7th January 2025
130AQI
130AQI
8th January 2025
143AQI
143AQI
9th January 2025
152AQI
152AQI
10th January 2025
105AQI
105AQI
11th January 2025
113AQI
113AQI
12th January 2025
123AQI
123AQI
13th January 2025
148AQI
148AQI
14th January 2025
150AQI
150AQI
15th January 2025
151AQI
151AQI
16th January 2025
151AQI
151AQI
17th January 2025
159AQI
159AQI
18th January 2025
164AQI
164AQI
19th January 2025
163AQI
163AQI
20th January 2025
176AQI
176AQI
21st January 2025
160AQI
160AQI
22nd January 2025
158AQI
158AQI
23rd January 2025
141AQI
141AQI
24th January 2025
134AQI
134AQI
25th January 2025
109AQI
109AQI
26th January 2025
87AQI
87AQI
27th January 2025
96AQI
96AQI
28th January 2025
86AQI
86AQI
29th January 2025
124AQI
124AQI
30th January 2025
115AQI
115AQI
31st January 2025
101AQI
101AQI
1st February 2025
90AQI
90AQI
2nd February 2025
75AQI
75AQI
3rd February 2025
61AQI
61AQI
4th February 2025
73AQI
73AQI
5th February 2025
98AQI
98AQI
6th February 2025
110AQI
110AQI
7th February 2025
54AQI
54AQI
8th February 2025
66AQI
66AQI
9th February 2025
87AQI
87AQI
10th February 2025
136AQI
136AQI
11th February 2025
145AQI
145AQI
12th February 2025
164AQI
164AQI
13th February 2025
141AQI
141AQI
14th February 2025
137AQI
137AQI
15th February 2025
148AQI
148AQI
16th February 2025
82AQI
82AQI
17th February 2025
112AQI
112AQI
18th February 2025
71AQI
71AQI
19th February 2025
91AQI
91AQI
20th February 2025
132AQI
132AQI
21st February 2025
111AQI
111AQI
22nd February 2025
128AQI
128AQI
23rd February 2025
71AQI
71AQI
24th February 2025
78AQI
78AQI
25th February 2025
86AQI
86AQI
26th February 2025
80AQI
80AQI
27th February 2025
139AQI
139AQI
28th February 2025
104AQI
104AQI
1st March 2025
114AQI
114AQI
2nd March 2025
87AQI
87AQI
3rd March 2025
89AQI
89AQI
4th March 2025
90AQI
90AQI
5th March 2025
90AQI
90AQI
6th March 2025
71AQI
71AQI
7th March 2025
77AQI
77AQI
8th March 2025
96AQI
96AQI
9th March 2025
129AQI
129AQI
10th March 2025
141AQI
141AQI
11th March 2025
119AQI
119AQI
12th March 2025
101AQI
101AQI
13th March 2025
85AQI
85AQI
14th March 2025
96AQI
96AQI
15th March 2025
83AQI
83AQI
16th March 2025
68AQI
68AQI
17th March 2025
84AQI
84AQI
18th March 2025
84AQI
84AQI
19th March 2025
82AQI
82AQI
20th March 2025
91AQI
91AQI
21st March 2025
123AQI
123AQI
22nd March 2025
112AQI
112AQI
23rd March 2025
117AQI
117AQI
24th March 2025
127AQI
127AQI
25th March 2025
127AQI
127AQI
26th March 2025
100AQI
100AQI
27th March 2025
100AQI
100AQI
28th March 2025
98AQI
98AQI
29th March 2025
76AQI
76AQI
30th March 2025
57AQI
57AQI
31st March 2025
65AQI
65AQI
1st April 2025
82AQI
82AQI
2nd April 2025
109AQI
109AQI
3rd April 2025
95AQI
95AQI
4th April 2025
138AQI
138AQI
5th April 2025
104AQI
104AQI
6th April 2025
121AQI
121AQI
7th April 2025
108AQI
108AQI
8th April 2025
110AQI
110AQI
9th April 2025
98AQI
98AQI
10th April 2025
94AQI
94AQI
11th April 2025
92AQI
92AQI
12th April 2025
100AQI
100AQI
13th April 2025
89AQI
89AQI
14th April 2025
101AQI
101AQI
15th April 2025
103AQI
103AQI
16th April 2025
114AQI
114AQI
17th April 2025
103AQI
103AQI
18th April 2025
107AQI
107AQI
19th April 2025
98AQI
98AQI
20th April 2025
88AQI
88AQI
21st April 2025
83AQI
83AQI
22nd April 2025
90AQI
90AQI
23rd April 2025
92AQI
92AQI
24th April 2025
85AQI
85AQI
25th April 2025
74AQI
74AQI
26th April 2025
79AQI
79AQI
27th April 2025
58AQI
58AQI
28th April 2025
54AQI
54AQI
29th April 2025
73AQI
73AQI
30th April 2025
65AQI
65AQI
1st May 2025
55AQI
55AQI
2nd May 2025
76AQI
76AQI
3rd May 2025
74AQI
74AQI
4th May 2025
75AQI
75AQI
5th May 2025
82AQI
82AQI
6th May 2025
72AQI
72AQI
7th May 2025
72AQI
72AQI
8th May 2025
80AQI
80AQI
9th May 2025
79AQI
79AQI
10th May 2025
79AQI
79AQI
11th May 2025
57AQI
57AQI
12th May 2025
74AQI
74AQI
13th May 2025
72AQI
72AQI
14th May 2025
67AQI
67AQI
15th May 2025
63AQI
63AQI
16th May 2025
62AQI
62AQI
17th May 2025
53AQI
53AQI
18th May 2025
56AQI
56AQI
19th May 2025
53AQI
53AQI
20th May 2025
58AQI
58AQI
21st May 2025
60AQI
60AQI
22nd May 2025
59AQI
59AQI
23rd May 2025
57AQI
57AQI
24th May 2025
57AQI
57AQI
25th May 2025
55AQI
55AQI
26th May 2025
60AQI
60AQI
27th May 2025
88AQI
88AQI
28th May 2025
87AQI
87AQI
29th May 2025
68AQI
68AQI
30th May 2025
63AQI
63AQI
31st May 2025
63AQI
63AQI
1st June 2025
52AQI
52AQI
2nd June 2025
53AQI
53AQI
3rd June 2025
53AQI
53AQI
4th June 2025
59AQI
59AQI
5th June 2025
70AQI
70AQI
6th June 2025
60AQI
60AQI
7th June 2025
61AQI
61AQI
8th June 2025
61AQI
61AQI
9th June 2025
61AQI
61AQI
10th June 2025
55AQI
55AQI
11th June 2025
63AQI
63AQI
12th June 2025
61AQI
61AQI
13th June 2025
52AQI
52AQI
14th June 2025
59AQI
59AQI
15th June 2025
64AQI
64AQI
16th June 2025
61AQI
61AQI
17th June 2025
58AQI
58AQI
18th June 2025
56AQI
56AQI
19th June 2025
62AQI
62AQI
20th June 2025
69AQI
69AQI
21st June 2025
63AQI
63AQI
22nd June 2025
64AQI
64AQI
23rd June 2025
64AQI
64AQI
24th June 2025
64AQI
64AQI
25th June 2025
58AQI
58AQI
26th June 2025
62AQI
62AQI
27th June 2025
60AQI
60AQI
28th June 2025
56AQI
56AQI
29th June 2025
58AQI
58AQI
30th June 2025
56AQI
56AQI
1st July 2025
50AQI
50AQI
2nd July 2025
52AQI
52AQI
3rd July 2025
56AQI
56AQI
4th July 2025
65AQI
65AQI
5th July 2025
63AQI
63AQI
6th July 2025
59AQI
59AQI
7th July 2025
66AQI
66AQI
8th July 2025
60AQI
60AQI
9th July 2025
67AQI
67AQI
10th July 2025
58AQI
58AQI
11th July 2025
55AQI
55AQI
12th July 2025
55AQI
55AQI
13th July 2025
57AQI
57AQI
14th July 2025
71AQI
71AQI
15th July 2025
82AQI
82AQI
16th July 2025
65AQI
65AQI
17th July 2025
63AQI
63AQI
18th July 2025
61AQI
61AQI
19th July 2025
73AQI
73AQI
20th July 2025
64AQI
64AQI
21st July 2025
63AQI
63AQI
22nd July 2025
54AQI
54AQI
23rd July 2025
56AQI
56AQI
24th July 2025
52AQI
52AQI
25th July 2025
60AQI
60AQI
26th July 2025
64AQI
64AQI
27th July 2025
61AQI
61AQI
28th July 2025
66AQI
66AQI
29th July 2025
74AQI
74AQI
30th July 2025
67AQI
67AQI
31st July 2025
60AQI
60AQI
1st August 2025
53AQI
53AQI
2nd August 2025
54AQI
54AQI
3rd August 2025
56AQI
56AQI
4th August 2025
57AQI
57AQI
5th August 2025
55AQI
55AQI
6th August 2025
54AQI
54AQI
7th August 2025
57AQI
57AQI
8th August 2025
57AQI
57AQI
9th August 2025
55AQI
55AQI
10th August 2025
57AQI
57AQI
11th August 2025
55AQI
55AQI
12th August 2025
50AQI
50AQI
13th August 2025
52AQI
52AQI
14th August 2025
54AQI
54AQI
15th August 2025
45AQI
45AQI
16th August 2025
43AQI
43AQI
17th August 2025
39AQI
39AQI
18th August 2025
38AQI
38AQI
19th August 2025
42AQI
42AQI
20th August 2025
45AQI
45AQI
21st August 2025
48AQI
48AQI
22nd August 2025
49AQI
49AQI
23rd August 2025
47AQI
47AQI
24th August 2025
44AQI
44AQI
25th August 2025
36AQI
36AQI
26th August 2025
34AQI
34AQI
27th August 2025
40AQI
40AQI
28th August 2025
45AQI
45AQI
29th August 2025
45AQI
45AQI
30th August 2025
40AQI
40AQI
31st August 2025
40AQI
40AQI
1st September 2025
42AQI
42AQI
2nd September 2025
42AQI
42AQI
3rd September 2025
40AQI
40AQI
4th September 2025
48AQI
48AQI
5th September 2025
40AQI
40AQI
6th September 2025
39AQI
39AQI
7th September 2025
51AQI
51AQI
8th September 2025
56AQI
56AQI
9th September 2025
46AQI
46AQI
10th September 2025
51AQI
51AQI
11th September 2025
44AQI
44AQI
12th September 2025
41AQI
41AQI
13th September 2025
39AQI
39AQI
14th September 2025
40AQI
40AQI
15th September 2025
45AQI
45AQI
16th September 2025
49AQI
49AQI
17th September 2025
50AQI
50AQI
18th September 2025
58AQI
58AQI
19th September 2025
59AQI
59AQI
20th September 2025
67AQI
67AQI
21st September 2025
72AQI
72AQI
22nd September 2025
64AQI
64AQI
23rd September 2025
66AQI
66AQI
24th September 2025
62AQI
62AQI
25th September 2025
55AQI
55AQI
26th September 2025
56AQI
56AQI
27th September 2025
66AQI
66AQI
28th September 2025
62AQI
62AQI
29th September 2025
49AQI
49AQI
30th September 2025
40AQI
40AQI
1st October 2025
64AQI
64AQI
2nd October 2025
76AQI
76AQI
3rd October 2025
73AQI
73AQI
4th October 2025
97AQI
97AQI
5th October 2025
116AQI
116AQI
6th October 2025
122AQI
122AQI
7th October 2025
61AQI
61AQI
8th October 2025
73AQI
73AQI
9th October 2025
115AQI
115AQI
10th October 2025
121AQI
121AQI
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
131AQI
103AQI
96AQI
94AQI
67AQI
60AQI
62AQI
48AQI
51AQI
92AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202579AQI
4
17
10
15
12
1
21
10
19
11
31
30
1
30
18
13
16
14
6
4
35
183
54
11
Highest AQI recorded in
January131AQI
Lowest AQI recorded in
August48AQI
202472AQI
5
8
2
1
2
10
30
3
28
27
2
4
15
7
3
9
15
3
4
2
26
2
18
11
2
47
149
31
11
1
Highest AQI recorded in
January122AQI
Lowest AQI recorded in
August33AQI
202379AQI
1
9
3
9
14
5
2
16
5
2
16
8
6
14
11
15
2
3
4
9
9
6
3
49
83
22
15
3
Highest AQI recorded in
January120AQI
Lowest AQI recorded in
November5AQI
202254AQI
2
11
2
10
6
1
7
21
4
1
3
2
1
24
41
5
1
Highest AQI recorded in
December88AQI
Lowest AQI recorded in
July5AQI
202177AQI
2
5
10
12
1
1
10
12
6
21
2
1
10
1
12
10
19
9
1
14
15
1
11
14
3
2
4
11
8
2
5
15
10
75
120
48
16
1
Highest AQI recorded in
January133AQI
Lowest AQI recorded in
July52AQI
202070AQI
1
7
3
1
1
11
20
10
17
1
16
14
1
25
4
3
12
11
4
49
91
17
5
Highest AQI recorded in
December100AQI
Lowest AQI recorded in
June0AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
79AQILeast Polluted Year Recorded
2022(Avg.)
54AQIHanoi Environmental Protection Department's annual 2025 AQI (79) shows an average percentage change of 14.7% (worsened AQI) compared to previous years: 2020 (70), 2021 (77), 2022 (54), 2023 (79), 2024 (72).
