Ha Noi Hong Ha, 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
Ha Noi Hong Ha, Hanoi, Ha Noi, Vietnam
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Oct 2024
130AQILowest AQI recorded on
6th Oct 2022
1AQISame Day Analysis (4th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 94 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Oct - 6th Oct 2025
Ha Noi Hong Ha, Hanoi, Ha Noi, Vietnam
AQI
Day
Night
.
5 AM5th Oct 2025
5 PM
4 AM6th Oct 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
1AM6th Oct
166AQI
Avg. Lowest Time
5PM5th Oct
75AQI
In the last 24 hours,
Ha Noi Hong Ha's AQI reached its highest point of 166 at 1 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ha Noi Hong Ha, Hanoi, Ha Noi, Vietnam
SepOct
06th - 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 - 06th06th
Day
Night
6th Sep 2025445 AMAQI
6th Sep 2025466 AMAQI
6th Sep 2025357 AMAQI
6th Sep 2025328 AMAQI
6th Sep 2025269 AMAQI
6th Sep 20254810 AMAQI
6th Sep 20254611 AMAQI
6th Sep 20253512 PMAQI
6th Sep 2025431 PMAQI
6th Sep 2025372 PMAQI
6th Sep 2025343 PMAQI
6th Sep 2025334 PMAQI
6th Sep 2025265 PMAQI
6th Sep 2025386 PMAQI
6th Sep 2025407 PMAQI
6th Sep 2025488 PMAQI
6th Sep 2025489 PMAQI
6th Sep 20254610 PMAQI
6th Sep 20254211 PMAQI
7th Sep 20254412 AMAQI
7th Sep 2025461 AMAQI
7th Sep 2025432 AMAQI
7th Sep 2025443 AMAQI
7th Sep 2025464 AMAQI
29°C26/35°C
7th Sep 2025465 AMAQI
7th Sep 2025446 AMAQI
7th Sep 2025417 AMAQI
7th Sep 2025498 AMAQI
7th Sep 2025519 AMAQI
7th Sep 20256010 AMAQI
7th Sep 20255411 AMAQI
7th Sep 20256212 PMAQI
7th Sep 2025581 PMAQI
7th Sep 2025582 PMAQI
7th Sep 2025523 PMAQI
7th Sep 2025464 PMAQI
7th Sep 2025565 PMAQI
7th Sep 2025496 PMAQI
7th Sep 2025547 PMAQI
7th Sep 2025588 PMAQI
7th Sep 2025609 PMAQI
7th Sep 20255910 PMAQI
7th Sep 20256011 PMAQI
8th Sep 20255512 AMAQI
8th Sep 2025571 AMAQI
8th Sep 2025502 AMAQI
8th Sep 2025483 AMAQI
8th Sep 2025474 AMAQI
30°C26/35°C
8th Sep 2025455 AMAQI
8th Sep 2025476 AMAQI
8th Sep 2025587 AMAQI
8th Sep 2025628 AMAQI
8th Sep 2025619 AMAQI
8th Sep 20256610 AMAQI
8th Sep 20256511 AMAQI
8th Sep 20256012 PMAQI
8th Sep 2025581 PMAQI
8th Sep 2025542 PMAQI
8th Sep 2025543 PMAQI
8th Sep 2025544 PMAQI
8th Sep 2025535 PMAQI
8th Sep 2025506 PMAQI
8th Sep 2025537 PMAQI
8th Sep 2025588 PMAQI
8th Sep 2025609 PMAQI
8th Sep 20255510 PMAQI
8th Sep 20256411 PMAQI
9th Sep 20255912 AMAQI
9th Sep 2025531 AMAQI
9th Sep 2025532 AMAQI
9th Sep 2025543 AMAQI
9th Sep 2025524 AMAQI
30°C26/36°C
9th Sep 2025545 AMAQI
9th Sep 2025546 AMAQI
9th Sep 2025477 AMAQI
9th Sep 2025508 AMAQI
9th Sep 2025549 AMAQI
9th Sep 20255210 AMAQI
9th Sep 20253611 AMAQI
9th Sep 20254112 PMAQI
9th Sep 2025311 PMAQI
9th Sep 2025252 PMAQI
9th Sep 2025243 PMAQI
9th Sep 2025274 PMAQI
9th Sep 2025385 PMAQI
9th Sep 2025436 PMAQI
9th Sep 2025467 PMAQI
9th Sep 2025488 PMAQI
9th Sep 2025509 PMAQI
9th Sep 20255210 PMAQI
9th Sep 20255411 PMAQI
10th Sep 20255112 AMAQI
10th Sep 2025531 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 2025468 AMAQI
10th Sep 2025489 AMAQI
10th Sep 20254810 AMAQI
10th Sep 20254211 AMAQI
10th Sep 20255312 PMAQI
10th Sep 2025421 PMAQI
10th Sep 2025522 PMAQI
10th Sep 2025513 PMAQI
10th Sep 2025524 PMAQI
10th Sep 2025515 PMAQI
10th Sep 2025546 PMAQI
10th Sep 2025487 PMAQI
10th Sep 2025558 PMAQI
10th Sep 2025579 PMAQI
10th Sep 20254910 PMAQI
10th Sep 20254911 PMAQI
11th Sep 20255212 AMAQI
11th Sep 2025511 AMAQI
11th Sep 2025512 AMAQI
11th Sep 2025513 AMAQI
11th Sep 2025524 AMAQI
28°C25/31°C
11th Sep 2025525 AMAQI
11th Sep 2025526 AMAQI
11th Sep 2025357 AMAQI
11th Sep 2025338 AMAQI
11th Sep 2025429 AMAQI
11th Sep 20254010 AMAQI
11th Sep 20253511 AMAQI
11th Sep 20255012 PMAQI
11th Sep 2025381 PMAQI
11th Sep 2025392 PMAQI
11th Sep 2025393 PMAQI
11th Sep 2025504 PMAQI
11th Sep 2025435 PMAQI
11th Sep 2025456 PMAQI
11th Sep 2025587 PMAQI
11th Sep 2025488 PMAQI
11th Sep 2025499 PMAQI
11th Sep 20255010 PMAQI
11th Sep 20254611 PMAQI
12th Sep 20255012 AMAQI
12th Sep 2025501 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 2025387 AMAQI
12th Sep 2025368 AMAQI
12th Sep 2025289 AMAQI
12th Sep 20254210 AMAQI
12th Sep 20252811 AMAQI
12th Sep 20253512 PMAQI
12th Sep 2025331 PMAQI
12th Sep 2025352 PMAQI
12th Sep 2025373 PMAQI
12th Sep 2025324 PMAQI
12th Sep 2025425 PMAQI
12th Sep 2025486 PMAQI
12th Sep 2025487 PMAQI
12th Sep 2025498 PMAQI
12th Sep 2025419 PMAQI
12th Sep 20254610 PMAQI
12th Sep 20255011 PMAQI
13th Sep 20255112 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 2025476 AMAQI
13th Sep 2025327 AMAQI
13th Sep 2025328 AMAQI
13th Sep 2025349 AMAQI
13th Sep 20254710 AMAQI
13th Sep 20254011 AMAQI
13th Sep 20253612 PMAQI
13th Sep 2025321 PMAQI
13th Sep 2025322 PMAQI
13th Sep 2025223 PMAQI
13th Sep 2025304 PMAQI
13th Sep 2025335 PMAQI
13th Sep 2025356 PMAQI
13th Sep 2025417 PMAQI
13th Sep 2025448 PMAQI
13th Sep 2025429 PMAQI
13th Sep 20254110 PMAQI
13th Sep 20254411 PMAQI
14th Sep 20254812 AMAQI
14th Sep 2025461 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 2025357 AMAQI
14th Sep 2025268 AMAQI
14th Sep 2025279 AMAQI
14th Sep 20253610 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20253312 PMAQI
14th Sep 2025341 PMAQI
14th Sep 2025332 PMAQI
14th Sep 2025413 PMAQI
14th Sep 2025354 PMAQI
14th Sep 2025335 PMAQI
14th Sep 2025366 PMAQI
14th Sep 2025447 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025479 PMAQI
14th Sep 20255210 PMAQI
14th Sep 20255011 PMAQI
15th Sep 20255412 AMAQI
15th Sep 2025481 AMAQI
15th Sep 2025462 AMAQI
15th Sep 2025423 AMAQI
15th Sep 2025434 AMAQI
28°C25/33°C
15th Sep 2025445 AMAQI
15th Sep 2025436 AMAQI
15th Sep 2025427 AMAQI
15th Sep 2025368 AMAQI
15th Sep 2025409 AMAQI
15th Sep 20254210 AMAQI
15th Sep 20254011 AMAQI
15th Sep 20253912 PMAQI
15th Sep 2025371 PMAQI
15th Sep 2025412 PMAQI
15th Sep 2025373 PMAQI
15th Sep 2025314 PMAQI
15th Sep 2025485 PMAQI
15th Sep 2025486 PMAQI
15th Sep 2025447 PMAQI
15th Sep 2025438 PMAQI
15th Sep 2025469 PMAQI
15th Sep 20255110 PMAQI
15th Sep 20254711 PMAQI
16th Sep 20254912 AMAQI
16th Sep 2025481 AMAQI
16th Sep 2025462 AMAQI
16th Sep 2025433 AMAQI
16th Sep 2025434 AMAQI
28°C25/31°C
16th Sep 2025455 AMAQI
16th Sep 2025446 AMAQI
16th Sep 2025547 AMAQI
16th Sep 2025598 AMAQI
16th Sep 2025539 AMAQI
16th Sep 20254810 AMAQI
16th Sep 20255411 AMAQI
16th Sep 20254612 PMAQI
16th Sep 2025461 PMAQI
16th Sep 2025442 PMAQI
16th Sep 2025413 PMAQI
16th Sep 2025414 PMAQI
16th Sep 2025445 PMAQI
16th Sep 2025486 PMAQI
16th Sep 2025487 PMAQI
16th Sep 2025528 PMAQI
16th Sep 2025469 PMAQI
16th Sep 20256110 PMAQI
16th Sep 20255411 PMAQI
17th Sep 20256112 AMAQI
17th Sep 2025471 AMAQI
17th Sep 2025482 AMAQI
17th Sep 2025483 AMAQI
17th Sep 2025484 AMAQI
28°C24/33°C
17th Sep 2025505 AMAQI
17th Sep 2025506 AMAQI
17th Sep 2025577 AMAQI
17th Sep 2025688 AMAQI
17th Sep 2025569 AMAQI
17th Sep 20255910 AMAQI
17th Sep 20255211 AMAQI
17th Sep 20254412 PMAQI
17th Sep 2025341 PMAQI
17th Sep 2025482 PMAQI
17th Sep 2025423 PMAQI
17th Sep 2025454 PMAQI
17th Sep 2025325 PMAQI
17th Sep 2025426 PMAQI
17th Sep 2025457 PMAQI
17th Sep 2025538 PMAQI
17th Sep 2025569 PMAQI
17th Sep 20255810 PMAQI
17th Sep 20255611 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025511 AMAQI
18th Sep 2025462 AMAQI
18th Sep 2025463 AMAQI
18th Sep 2025484 AMAQI
27°C25/31°C
18th Sep 2025505 AMAQI
18th Sep 2025526 AMAQI
18th Sep 2025567 AMAQI
18th Sep 2025558 AMAQI
18th Sep 2025569 AMAQI
18th Sep 20255610 AMAQI
18th Sep 20255511 AMAQI
18th Sep 20255312 PMAQI
18th Sep 2025541 PMAQI
18th Sep 2025562 PMAQI
18th Sep 2025423 PMAQI
18th Sep 2025404 PMAQI
18th Sep 2025385 PMAQI
18th Sep 2025406 PMAQI
18th Sep 2025397 PMAQI
18th Sep 2025528 PMAQI
18th Sep 2025559 PMAQI
18th Sep 20256010 PMAQI
18th Sep 20255811 PMAQI
19th Sep 20255612 AMAQI
19th Sep 2025521 AMAQI
19th Sep 2025512 AMAQI
19th Sep 2025503 AMAQI
19th Sep 2025494 AMAQI
27°C25/30°C
19th Sep 2025525 AMAQI
19th Sep 2025536 AMAQI
19th Sep 2025637 AMAQI
19th Sep 2025688 AMAQI
19th Sep 2025689 AMAQI
19th Sep 20256210 AMAQI
19th Sep 20256011 AMAQI
19th Sep 20255812 PMAQI
19th Sep 2025511 PMAQI
19th Sep 2025482 PMAQI
19th Sep 2025383 PMAQI
19th Sep 2025384 PMAQI
19th Sep 2025325 PMAQI
19th Sep 2025386 PMAQI
19th Sep 2025437 PMAQI
19th Sep 2025438 PMAQI
19th Sep 2025469 PMAQI
19th Sep 20255010 PMAQI
19th Sep 20254511 PMAQI
20th Sep 20254712 AMAQI
20th Sep 2025511 AMAQI
20th Sep 2025522 AMAQI
20th Sep 2025523 AMAQI
20th Sep 2025524 AMAQI
28°C25/33°C
20th Sep 2025525 AMAQI
20th Sep 2025566 AMAQI
20th Sep 2025637 AMAQI
20th Sep 2025688 AMAQI
20th Sep 2025769 AMAQI
20th Sep 20257410 AMAQI
20th Sep 20256111 AMAQI
20th Sep 20256212 PMAQI
20th Sep 2025591 PMAQI
20th Sep 2025622 PMAQI
20th Sep 2025583 PMAQI
20th Sep 2025584 PMAQI
20th Sep 2025565 PMAQI
20th Sep 2025566 PMAQI
20th Sep 2025547 PMAQI
20th Sep 2025578 PMAQI
20th Sep 2025689 PMAQI
20th Sep 20256910 PMAQI
20th Sep 20256411 PMAQI
21st Sep 20256412 AMAQI
21st Sep 2025581 AMAQI
21st Sep 2025532 AMAQI
21st Sep 2025613 AMAQI
21st Sep 2025604 AMAQI
29°C25/35°C
21st Sep 2025615 AMAQI
21st Sep 2025616 AMAQI
21st Sep 2025787 AMAQI
21st Sep 2025808 AMAQI
21st Sep 2025859 AMAQI
21st Sep 20259010 AMAQI
21st Sep 20257511 AMAQI
21st Sep 20257612 PMAQI
21st Sep 2025741 PMAQI
21st Sep 2025802 PMAQI
21st Sep 2025793 PMAQI
21st Sep 2025694 PMAQI
21st Sep 2025625 PMAQI
21st Sep 2025626 PMAQI
21st Sep 2025667 PMAQI
21st Sep 2025638 PMAQI
21st Sep 2025669 PMAQI
21st Sep 20256610 PMAQI
21st Sep 20256411 PMAQI
22nd Sep 20256112 AMAQI
22nd Sep 2025581 AMAQI
22nd Sep 2025562 AMAQI
22nd Sep 2025613 AMAQI
22nd Sep 2025594 AMAQI
29°C26/35°C
22nd Sep 2025615 AMAQI
22nd Sep 2025686 AMAQI
22nd Sep 2025607 AMAQI
22nd Sep 2025578 AMAQI
22nd Sep 2025549 AMAQI
22nd Sep 20255310 AMAQI
22nd Sep 20255611 AMAQI
22nd Sep 20255212 PMAQI
22nd Sep 2025481 PMAQI
22nd Sep 2025512 PMAQI
22nd Sep 2025583 PMAQI
22nd Sep 2025524 PMAQI
22nd Sep 2025485 PMAQI
22nd Sep 2025496 PMAQI
22nd Sep 2025557 PMAQI
22nd Sep 2025538 PMAQI
22nd Sep 2025549 PMAQI
22nd Sep 20255510 PMAQI
22nd Sep 20255811 PMAQI
23rd Sep 20255812 AMAQI
23rd Sep 2025571 AMAQI
23rd Sep 2025552 AMAQI
23rd Sep 2025553 AMAQI
23rd Sep 2025564 AMAQI
28°C26/32°C
23rd Sep 2025575 AMAQI
23rd Sep 2025626 AMAQI
23rd Sep 2025717 AMAQI
23rd Sep 2025708 AMAQI
23rd Sep 2025689 AMAQI
23rd Sep 20256410 AMAQI
23rd Sep 20256311 AMAQI
23rd Sep 20255412 PMAQI
23rd Sep 2025571 PMAQI
23rd Sep 2025512 PMAQI
23rd Sep 2025493 PMAQI
23rd Sep 2025544 PMAQI
23rd Sep 2025545 PMAQI
23rd Sep 2025566 PMAQI
23rd Sep 2025587 PMAQI
23rd Sep 2025608 PMAQI
23rd Sep 2025619 PMAQI
23rd Sep 20256010 PMAQI
23rd Sep 20256611 PMAQI
24th Sep 20256412 AMAQI
24th Sep 2025551 AMAQI
24th Sep 2025562 AMAQI
24th Sep 2025563 AMAQI
24th Sep 2025564 AMAQI
28°C24/32°C
24th Sep 2025575 AMAQI
24th Sep 2025626 AMAQI
24th Sep 2025577 AMAQI
24th Sep 2025588 AMAQI
24th Sep 2025549 AMAQI
24th Sep 20255410 AMAQI
24th Sep 20255611 AMAQI
24th Sep 20255412 PMAQI
24th Sep 2025541 PMAQI
24th Sep 2025502 PMAQI
24th Sep 2025453 PMAQI
24th Sep 2025394 PMAQI
24th Sep 2025345 PMAQI
24th Sep 2025346 PMAQI
24th Sep 2025447 PMAQI
24th Sep 2025508 PMAQI
24th Sep 2025549 PMAQI
24th Sep 20255710 PMAQI
24th Sep 20255411 PMAQI
25th Sep 20255612 AMAQI
25th Sep 2025551 AMAQI
25th Sep 2025552 AMAQI
25th Sep 2025543 AMAQI
25th Sep 2025544 AMAQI
29°C24/34°C
25th Sep 2025565 AMAQI
25th Sep 2025616 AMAQI
25th Sep 2025567 AMAQI
25th Sep 2025538 AMAQI
25th Sep 2025549 AMAQI
25th Sep 20255310 AMAQI
25th Sep 20254211 AMAQI
25th Sep 20255012 PMAQI
25th Sep 2025521 PMAQI
25th Sep 2025542 PMAQI
25th Sep 2025523 PMAQI
25th Sep 2025454 PMAQI
25th Sep 2025395 PMAQI
25th Sep 2025346 PMAQI
25th Sep 2025397 PMAQI
25th Sep 2025368 PMAQI
25th Sep 2025339 PMAQI
25th Sep 20254010 PMAQI
25th Sep 20254311 PMAQI
26th Sep 20254612 AMAQI
26th Sep 2025511 AMAQI
26th Sep 2025452 AMAQI
26th Sep 2025453 AMAQI
26th Sep 2025474 AMAQI
25°C24/24°C
26th Sep 2025485 AMAQI
26th Sep 2025536 AMAQI
26th Sep 2025537 AMAQI
26th Sep 2025548 AMAQI
26th Sep 2025579 AMAQI
26th Sep 20255810 AMAQI
26th Sep 20255911 AMAQI
26th Sep 20255912 PMAQI
26th Sep 2025641 PMAQI
26th Sep 2025662 PMAQI
26th Sep 2025643 PMAQI
26th Sep 2025644 PMAQI
26th Sep 2025645 PMAQI
26th Sep 2025626 PMAQI
26th Sep 2025627 PMAQI
26th Sep 2025628 PMAQI
26th Sep 2025609 PMAQI
26th Sep 20256210 PMAQI
26th Sep 20256011 PMAQI
27th Sep 20255512 AMAQI
27th Sep 2025481 AMAQI
27th Sep 2025492 AMAQI
27th Sep 2025423 AMAQI
27th Sep 2025424 AMAQI
25°C23/28°C
27th Sep 2025385 AMAQI
27th Sep 2025476 AMAQI
27th Sep 2025487 AMAQI
27th Sep 2025408 AMAQI
27th Sep 2025449 AMAQI
27th Sep 20254510 AMAQI
27th Sep 20253511 AMAQI
27th Sep 20253512 PMAQI
27th Sep 2025271 PMAQI
27th Sep 2025182 PMAQI
27th Sep 2025163 PMAQI
27th Sep 2025174 PMAQI
27th Sep 2025185 PMAQI
27th Sep 2025146 PMAQI
27th Sep 2025187 PMAQI
27th Sep 2025388 PMAQI
27th Sep 2025529 PMAQI
27th Sep 20255510 PMAQI
27th Sep 20256311 PMAQI
28th Sep 20256612 AMAQI
28th Sep 2025671 AMAQI
28th Sep 2025692 AMAQI
28th Sep 2025663 AMAQI
28th Sep 2025584 AMAQI
27°C24/30°C
28th Sep 2025545 AMAQI
28th Sep 2025536 AMAQI
28th Sep 2025547 AMAQI
28th Sep 2025548 AMAQI
28th Sep 2025559 AMAQI
28th Sep 20255510 AMAQI
28th Sep 20255411 AMAQI
28th Sep 20255312 PMAQI
28th Sep 2025481 PMAQI
28th Sep 2025412 PMAQI
28th Sep 2025303 PMAQI
28th Sep 2025204 PMAQI
28th Sep 2025315 PMAQI
28th Sep 2025326 PMAQI
28th Sep 2025277 PMAQI
28th Sep 2025298 PMAQI
28th Sep 2025219 PMAQI
28th Sep 20251410 PMAQI
28th Sep 20252211 PMAQI
29th Sep 20253212 AMAQI
29th Sep 2025551 AMAQI
29th Sep 2025552 AMAQI
29th Sep 2025563 AMAQI
29th Sep 2025554 AMAQI
25°C24/30°C
29th Sep 2025565 AMAQI
29th Sep 2025556 AMAQI
29th Sep 2025597 AMAQI
29th Sep 2025628 AMAQI
29th Sep 2025529 AMAQI
29th Sep 20254410 AMAQI
29th Sep 20254411 AMAQI
29th Sep 20254612 PMAQI
29th Sep 2025481 PMAQI
29th Sep 2025422 PMAQI
29th Sep 2025433 PMAQI
29th Sep 2025504 PMAQI
29th Sep 2025525 PMAQI
29th Sep 2025546 PMAQI
29th Sep 2025537 PMAQI
29th Sep 2025528 PMAQI
29th Sep 2025469 PMAQI
29th Sep 20255010 PMAQI
29th Sep 20255111 PMAQI
30th Sep 20254512 AMAQI
30th Sep 2025511 AMAQI
30th Sep 2025502 AMAQI
30th Sep 2025423 AMAQI
30th Sep 2025384 AMAQI
25°C24/25°C
30th Sep 2025385 AMAQI
30th Sep 2025376 AMAQI
30th Sep 2025397 AMAQI
30th Sep 2025438 AMAQI
30th Sep 2025369 AMAQI
30th Sep 20255510 AMAQI
30th Sep 20255911 AMAQI
30th Sep 20255812 PMAQI
30th Sep 2025531 PMAQI
30th Sep 2025422 PMAQI
30th Sep 2025393 PMAQI
30th Sep 2025584 PMAQI
30th Sep 2025655 PMAQI
30th Sep 2025476 PMAQI
30th Sep 2025407 PMAQI
30th Sep 2025448 PMAQI
30th Sep 2025499 PMAQI
30th Sep 20255410 PMAQI
30th Sep 20256011 PMAQI
1st Oct 20256412 AMAQI
1st Oct 2025681 AMAQI
1st Oct 2025772 AMAQI
1st Oct 2025813 AMAQI
1st Oct 2025874 AMAQI
26°C25/30°C
1st Oct 2025885 AMAQI
1st Oct 2025806 AMAQI
1st Oct 2025787 AMAQI
1st Oct 2025768 AMAQI
1st Oct 2025829 AMAQI
1st Oct 20256910 AMAQI
1st Oct 20256211 AMAQI
1st Oct 20256012 PMAQI
1st Oct 2025591 PMAQI
1st Oct 2025592 PMAQI
1st Oct 2025593 PMAQI
1st Oct 2025584 PMAQI
1st Oct 2025585 PMAQI
1st Oct 2025596 PMAQI
1st Oct 2025647 PMAQI
1st Oct 2025648 PMAQI
1st Oct 2025739 PMAQI
1st Oct 20258110 PMAQI
1st Oct 20257411 PMAQI
2nd Oct 20257212 AMAQI
2nd Oct 2025691 AMAQI
2nd Oct 2025672 AMAQI
2nd Oct 2025823 AMAQI
2nd Oct 20251054 AMAQI
27°C24/30°C
2nd Oct 2025935 AMAQI
2nd Oct 2025946 AMAQI
2nd Oct 20251097 AMAQI
2nd Oct 20251048 AMAQI
2nd Oct 20251049 AMAQI
2nd Oct 20258610 AMAQI
2nd Oct 20257211 AMAQI
2nd Oct 20256012 PMAQI
2nd Oct 2025581 PMAQI
2nd Oct 2025602 PMAQI
2nd Oct 2025573 PMAQI
2nd Oct 2025564 PMAQI
2nd Oct 2025555 PMAQI
2nd Oct 2025566 PMAQI
2nd Oct 2025577 PMAQI
2nd Oct 2025578 PMAQI
2nd Oct 2025619 PMAQI
2nd Oct 20257010 PMAQI
2nd Oct 20256311 PMAQI
3rd Oct 20256312 AMAQI
3rd Oct 2025621 AMAQI
3rd Oct 2025642 AMAQI
3rd Oct 2025663 AMAQI
3rd Oct 2025634 AMAQI
27°C24/32°C
3rd Oct 2025665 AMAQI
3rd Oct 2025666 AMAQI
3rd Oct 2025647 AMAQI
3rd Oct 2025708 AMAQI
3rd Oct 2025699 AMAQI
3rd Oct 20257810 AMAQI
3rd Oct 20256511 AMAQI
3rd Oct 20256012 PMAQI
3rd Oct 2025581 PMAQI
3rd Oct 2025592 PMAQI
3rd Oct 2025603 PMAQI
3rd Oct 2025574 PMAQI
3rd Oct 2025565 PMAQI
3rd Oct 2025536 PMAQI
3rd Oct 2025727 PMAQI
3rd Oct 2025738 PMAQI
3rd Oct 2025769 PMAQI
3rd Oct 20258410 PMAQI
3rd Oct 20259911 PMAQI
4th Oct 20259412 AMAQI
4th Oct 20251011 AMAQI
4th Oct 2025882 AMAQI
4th Oct 2025833 AMAQI
4th Oct 2025784 AMAQI
28°C24/33°C
4th Oct 2025765 AMAQI
4th Oct 2025796 AMAQI
4th Oct 2025917 AMAQI
4th Oct 20251008 AMAQI
4th Oct 20251029 AMAQI
4th Oct 202511010 AMAQI
4th Oct 202510311 AMAQI
4th Oct 202510212 PMAQI
4th Oct 20251021 PMAQI
4th Oct 20251032 PMAQI
4th Oct 2025973 PMAQI
4th Oct 20251054 PMAQI
4th Oct 2025965 PMAQI
4th Oct 2025946 PMAQI
4th Oct 2025887 PMAQI
4th Oct 2025958 PMAQI
4th Oct 2025959 PMAQI
4th Oct 202510410 PMAQI
4th Oct 202510611 PMAQI
5th Oct 202510412 AMAQI
5th Oct 2025981 AMAQI
5th Oct 20251062 AMAQI
5th Oct 2025993 AMAQI
5th Oct 20251074 AMAQI
28°C24/32°C
5th Oct 20251285 AMAQI
5th Oct 20251376 AMAQI
5th Oct 20251507 AMAQI
5th Oct 20251368 AMAQI
5th Oct 20251419 AMAQI
5th Oct 202513710 AMAQI
5th Oct 202512111 AMAQI
5th Oct 202512212 PMAQI
5th Oct 20251181 PMAQI
5th Oct 2025962 PMAQI
5th Oct 2025883 PMAQI
5th Oct 2025754 PMAQI
5th Oct 2025755 PMAQI
5th Oct 2025826 PMAQI
5th Oct 2025967 PMAQI
5th Oct 20251058 PMAQI
5th Oct 20251329 PMAQI
5th Oct 202514810 PMAQI
5th Oct 202515111 PMAQI
6th Oct 202516012 AMAQI
6th Oct 20251661 AMAQI
--°C/°C
5 AM
11 AM
5 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
10 AM
61AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 PM - 5 PM
48AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 61), while the lowest AQI was between 3 PM to 5 PM (Avg. 48).
Night time
Avg. Highest Time
12 AM - 1 AM
61AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 PM
49AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 61), while the lowest AQI was between 6 PM to 6 PM (Avg. 49).
2025 Days Vs Air Quality
Ha Noi Hong Ha, Hanoi, Ha Noi, Vietnam
2025
15%
42
63%
175
19%
53
3%
7
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Good
42 DaysModerate
175 DaysPoor
53 DaysUnhealthy
7 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 15%
Health Risk Level:
Extreme
In 2025, 15% 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
Ha Noi Hong Ha, 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
134AQI
134AQI
2nd January 2025
153AQI
153AQI
3rd January 2025
123AQI
123AQI
4th January 2025
108AQI
108AQI
5th January 2025
113AQI
113AQI
6th January 2025
113AQI
113AQI
7th January 2025
120AQI
120AQI
8th January 2025
118AQI
118AQI
9th January 2025
119AQI
119AQI
10th January 2025
90AQI
90AQI
11th January 2025
97AQI
97AQI
12th January 2025
112AQI
112AQI
13th January 2025
139AQI
139AQI
14th January 2025
140AQI
140AQI
15th January 2025
150AQI
150AQI
16th January 2025
143AQI
143AQI
17th January 2025
150AQI
150AQI
18th January 2025
162AQI
162AQI
19th January 2025
157AQI
157AQI
20th January 2025
175AQI
175AQI
21st January 2025
161AQI
161AQI
22nd January 2025
161AQI
161AQI
23rd January 2025
132AQI
132AQI
24th January 2025
137AQI
137AQI
25th January 2025
101AQI
101AQI
26th January 2025
70AQI
70AQI
27th January 2025
89AQI
89AQI
28th January 2025
77AQI
77AQI
29th January 2025
118AQI
118AQI
30th January 2025
104AQI
104AQI
31st January 2025
87AQI
87AQI
1st February 2025
76AQI
76AQI
2nd February 2025
66AQI
66AQI
3rd February 2025
52AQI
52AQI
4th February 2025
67AQI
67AQI
5th February 2025
95AQI
95AQI
6th February 2025
100AQI
100AQI
7th February 2025
54AQI
54AQI
8th February 2025
65AQI
65AQI
9th February 2025
83AQI
83AQI
10th February 2025
135AQI
135AQI
11th February 2025
146AQI
146AQI
12th February 2025
160AQI
160AQI
13th February 2025
136AQI
136AQI
14th February 2025
134AQI
134AQI
15th February 2025
138AQI
138AQI
16th February 2025
76AQI
76AQI
17th February 2025
104AQI
104AQI
18th February 2025
65AQI
65AQI
19th February 2025
86AQI
86AQI
20th February 2025
129AQI
129AQI
21st February 2025
106AQI
106AQI
22nd February 2025
129AQI
129AQI
23rd February 2025
65AQI
65AQI
24th February 2025
74AQI
74AQI
25th February 2025
92AQI
92AQI
26th February 2025
80AQI
80AQI
27th February 2025
138AQI
138AQI
28th February 2025
102AQI
102AQI
1st March 2025
106AQI
106AQI
2nd March 2025
82AQI
82AQI
3rd March 2025
85AQI
85AQI
4th March 2025
84AQI
84AQI
5th March 2025
91AQI
91AQI
6th March 2025
60AQI
60AQI
7th March 2025
69AQI
69AQI
8th March 2025
88AQI
88AQI
9th March 2025
127AQI
127AQI
10th March 2025
137AQI
137AQI
11th March 2025
121AQI
121AQI
12th March 2025
89AQI
89AQI
13th March 2025
80AQI
80AQI
14th March 2025
82AQI
82AQI
15th March 2025
77AQI
77AQI
16th March 2025
58AQI
58AQI
17th March 2025
78AQI
78AQI
18th March 2025
72AQI
72AQI
19th March 2025
75AQI
75AQI
20th March 2025
83AQI
83AQI
21st March 2025
121AQI
121AQI
22nd March 2025
118AQI
118AQI
23rd March 2025
127AQI
127AQI
24th March 2025
136AQI
136AQI
25th March 2025
137AQI
137AQI
26th March 2025
118AQI
118AQI
27th March 2025
110AQI
110AQI
28th March 2025
107AQI
107AQI
29th March 2025
83AQI
83AQI
30th March 2025
65AQI
65AQI
31st March 2025
71AQI
71AQI
1st April 2025
93AQI
93AQI
2nd April 2025
126AQI
126AQI
3rd April 2025
108AQI
108AQI
4th April 2025
103AQI
103AQI
5th April 2025
115AQI
115AQI
6th April 2025
136AQI
136AQI
7th April 2025
124AQI
124AQI
8th April 2025
122AQI
122AQI
9th April 2025
101AQI
101AQI
10th April 2025
98AQI
98AQI
11th April 2025
99AQI
99AQI
12th April 2025
107AQI
107AQI
13th April 2025
91AQI
91AQI
14th April 2025
97AQI
97AQI
15th April 2025
105AQI
105AQI
16th April 2025
107AQI
107AQI
17th April 2025
96AQI
96AQI
18th April 2025
100AQI
100AQI
19th April 2025
95AQI
95AQI
20th April 2025
84AQI
84AQI
21st April 2025
83AQI
83AQI
22nd April 2025
95AQI
95AQI
23rd April 2025
96AQI
96AQI
24th April 2025
89AQI
89AQI
25th April 2025
81AQI
81AQI
26th April 2025
83AQI
83AQI
27th April 2025
74AQI
74AQI
28th April 2025
70AQI
70AQI
29th April 2025
80AQI
80AQI
30th April 2025
78AQI
78AQI
1st May 2025
65AQI
65AQI
2nd May 2025
83AQI
83AQI
3rd May 2025
79AQI
79AQI
4th May 2025
77AQI
77AQI
5th May 2025
78AQI
78AQI
6th May 2025
74AQI
74AQI
7th May 2025
75AQI
75AQI
8th May 2025
78AQI
78AQI
9th May 2025
80AQI
80AQI
10th May 2025
81AQI
81AQI
11th May 2025
56AQI
56AQI
12th May 2025
69AQI
69AQI
13th May 2025
67AQI
67AQI
14th May 2025
63AQI
63AQI
15th May 2025
60AQI
60AQI
16th May 2025
60AQI
60AQI
17th May 2025
56AQI
56AQI
18th May 2025
55AQI
55AQI
19th May 2025
57AQI
57AQI
20th May 2025
58AQI
58AQI
21st May 2025
57AQI
57AQI
22nd May 2025
57AQI
57AQI
23rd May 2025
55AQI
55AQI
24th May 2025
54AQI
54AQI
25th May 2025
55AQI
55AQI
26th May 2025
58AQI
58AQI
27th May 2025
79AQI
79AQI
28th May 2025
74AQI
74AQI
29th May 2025
58AQI
58AQI
30th May 2025
56AQI
56AQI
31st May 2025
57AQI
57AQI
1st June 2025
51AQI
51AQI
2nd June 2025
53AQI
53AQI
3rd June 2025
54AQI
54AQI
4th June 2025
60AQI
60AQI
5th June 2025
71AQI
71AQI
6th June 2025
61AQI
61AQI
7th June 2025
60AQI
60AQI
8th June 2025
59AQI
59AQI
9th June 2025
64AQI
64AQI
10th June 2025
61AQI
61AQI
11th June 2025
64AQI
64AQI
12th June 2025
63AQI
63AQI
13th June 2025
59AQI
59AQI
14th June 2025
65AQI
65AQI
15th June 2025
82AQI
82AQI
16th June 2025
66AQI
66AQI
17th June 2025
65AQI
65AQI
18th June 2025
60AQI
60AQI
19th June 2025
67AQI
67AQI
20th June 2025
70AQI
70AQI
21st June 2025
62AQI
62AQI
22nd June 2025
55AQI
55AQI
23rd June 2025
60AQI
60AQI
24th June 2025
64AQI
64AQI
25th June 2025
57AQI
57AQI
26th June 2025
57AQI
57AQI
27th June 2025
59AQI
59AQI
28th June 2025
55AQI
55AQI
29th June 2025
56AQI
56AQI
30th June 2025
54AQI
54AQI
1st July 2025
47AQI
47AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
54AQI
54AQI
4th July 2025
61AQI
61AQI
5th July 2025
60AQI
60AQI
6th July 2025
57AQI
57AQI
7th July 2025
64AQI
64AQI
8th July 2025
62AQI
62AQI
9th July 2025
69AQI
69AQI
10th July 2025
58AQI
58AQI
11th July 2025
56AQI
56AQI
12th July 2025
53AQI
53AQI
13th July 2025
56AQI
56AQI
14th July 2025
70AQI
70AQI
15th July 2025
80AQI
80AQI
16th July 2025
59AQI
59AQI
17th July 2025
57AQI
57AQI
18th July 2025
59AQI
59AQI
19th July 2025
70AQI
70AQI
20th July 2025
59AQI
59AQI
21st July 2025
56AQI
56AQI
22nd July 2025
39AQI
39AQI
23rd July 2025
42AQI
42AQI
24th July 2025
41AQI
41AQI
25th July 2025
56AQI
56AQI
26th July 2025
58AQI
58AQI
27th July 2025
56AQI
56AQI
28th July 2025
64AQI
64AQI
29th July 2025
75AQI
75AQI
30th July 2025
68AQI
68AQI
31st July 2025
61AQI
61AQI
1st August 2025
54AQI
54AQI
2nd August 2025
54AQI
54AQI
3rd August 2025
56AQI
56AQI
4th August 2025
57AQI
57AQI
5th August 2025
56AQI
56AQI
6th August 2025
53AQI
53AQI
7th August 2025
56AQI
56AQI
8th August 2025
55AQI
55AQI
9th August 2025
53AQI
53AQI
10th August 2025
50AQI
50AQI
11th August 2025
54AQI
54AQI
12th August 2025
51AQI
51AQI
13th August 2025
54AQI
54AQI
14th August 2025
54AQI
54AQI
15th August 2025
46AQI
46AQI
16th August 2025
43AQI
43AQI
17th August 2025
42AQI
42AQI
18th August 2025
41AQI
41AQI
19th August 2025
43AQI
43AQI
20th August 2025
44AQI
44AQI
21st August 2025
46AQI
46AQI
22nd August 2025
47AQI
47AQI
23rd August 2025
47AQI
47AQI
24th August 2025
47AQI
47AQI
25th August 2025
39AQI
39AQI
26th August 2025
38AQI
38AQI
27th August 2025
40AQI
40AQI
28th August 2025
45AQI
45AQI
29th August 2025
45AQI
45AQI
30th August 2025
42AQI
42AQI
31st August 2025
41AQI
41AQI
1st September 2025
42AQI
42AQI
2nd September 2025
43AQI
43AQI
3rd September 2025
43AQI
43AQI
4th September 2025
48AQI
48AQI
5th September 2025
42AQI
42AQI
6th September 2025
41AQI
41AQI
7th September 2025
50AQI
50AQI
8th September 2025
56AQI
56AQI
9th September 2025
52AQI
52AQI
10th September 2025
50AQI
50AQI
11th September 2025
48AQI
48AQI
12th September 2025
45AQI
45AQI
13th September 2025
42AQI
42AQI
14th September 2025
42AQI
42AQI
15th September 2025
45AQI
45AQI
16th September 2025
48AQI
48AQI
17th September 2025
52AQI
52AQI
18th September 2025
51AQI
51AQI
19th September 2025
51AQI
51AQI
20th September 2025
57AQI
57AQI
21st September 2025
67AQI
67AQI
22nd September 2025
57AQI
57AQI
23rd September 2025
60AQI
60AQI
24th September 2025
54AQI
54AQI
25th September 2025
48AQI
48AQI
26th September 2025
55AQI
55AQI
27th September 2025
42AQI
42AQI
28th September 2025
47AQI
47AQI
29th September 2025
44AQI
44AQI
30th September 2025
48AQI
48AQI
1st October 2025
69AQI
69AQI
2nd October 2025
72AQI
72AQI
3rd October 2025
67AQI
67AQI
4th October 2025
94AQI
94AQI
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
124AQI
98AQI
95AQI
98AQI
66AQI
61AQI
58AQI
48AQI
49AQI
76AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202577AQI
6
19
6
16
11
1
19
12
19
11
31
30
5
26
18
13
19
11
4
42
175
53
7
Highest AQI recorded in
January124AQI
Lowest AQI recorded in
August48AQI
202448AQI
17
13
2
15
30
8
23
30
1
14
1
20
10
1
8
20
2
2
14
13
2
129
98
17
2
Highest AQI recorded in
December98AQI
Lowest AQI recorded in
March10AQI
202310AQI
29
15
30
20
30
26
15
25
15
3
1
18
13
226
14
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
June2AQI
202218AQI
10
6
3
6
15
5
8
3
24
24
12
1
21
25
21
22
174
24
8
Highest AQI recorded in
March73AQI
Lowest AQI recorded in
July1AQI
Most & Least Polluted Years Over the Last 4 Years
Most Polluted Year Recorded
2025(Avg.)
77AQILeast Polluted Year Recorded
2023(Avg.)
10AQIHa Noi Hong Ha's annual 2025 AQI (77) shows an average percentage change of 360.3% (worsened AQI) compared to previous years: 2022 (18), 2023 (10), 2024 (48).
