Lang Son, Lang Son, 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+
August Air Quality Analysis
Lang Son, Lang Son, Vietnam
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Aug 2024
84AQILowest AQI recorded on
4th Aug 2023
7AQISame Day Analysis (15th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 48 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 16th Aug - 17th Aug 2025
Lang Son, Lang Son, Vietnam
AQI
Day
Night
.
5 AM16th Aug 2025
6 PM
4 AM17th Aug 2025
Day time
Avg. Highest Time
5AM16th Aug
54AQI
Avg. Lowest Time
2PM16th Aug
29AQI
Night time
Avg. Highest Time
11PM16th Aug
54AQI
Avg. Lowest Time
9PM16th Aug
46AQI
In the last 24 hours,
Lang Son's AQI reached its highest point of 54 at 5 AM during the Day, while the lowest point, 29, was recorded at 2 PM during the Day between 16th Aug and 17th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Lang Son, Lang Son, Vietnam
JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th
Day
Night
18th Jul 2025525 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025657 AMAQI
18th Jul 2025788 AMAQI
18th Jul 2025639 AMAQI
18th Jul 20253410 AMAQI
18th Jul 20254711 AMAQI
18th Jul 20254712 PMAQI
18th Jul 2025481 PMAQI
18th Jul 2025452 PMAQI
18th Jul 2025443 PMAQI
18th Jul 2025474 PMAQI
18th Jul 2025495 PMAQI
18th Jul 2025546 PMAQI
18th Jul 2025557 PMAQI
18th Jul 2025558 PMAQI
18th Jul 2025559 PMAQI
18th Jul 20255610 PMAQI
18th Jul 20255611 PMAQI
19th Jul 20255512 AMAQI
19th Jul 2025541 AMAQI
19th Jul 2025542 AMAQI
19th Jul 2025543 AMAQI
19th Jul 2025544 AMAQI
28°C25/32°C
19th Jul 2025545 AMAQI
19th Jul 2025546 AMAQI
19th Jul 2025667 AMAQI
19th Jul 2025698 AMAQI
19th Jul 2025739 AMAQI
19th Jul 20256610 AMAQI
19th Jul 20256111 AMAQI
19th Jul 20256112 PMAQI
19th Jul 2025601 PMAQI
19th Jul 2025582 PMAQI
19th Jul 2025563 PMAQI
19th Jul 2025534 PMAQI
19th Jul 2025525 PMAQI
19th Jul 2025536 PMAQI
19th Jul 2025577 PMAQI
19th Jul 2025568 PMAQI
19th Jul 2025559 PMAQI
19th Jul 20255410 PMAQI
19th Jul 20255411 PMAQI
20th Jul 20255412 AMAQI
20th Jul 2025561 AMAQI
20th Jul 2025552 AMAQI
20th Jul 2025563 AMAQI
20th Jul 2025564 AMAQI
28°C24/34°C
20th Jul 2025565 AMAQI
20th Jul 2025566 AMAQI
20th Jul 2025407 AMAQI
20th Jul 2025258 AMAQI
20th Jul 2025299 AMAQI
20th Jul 20253210 AMAQI
20th Jul 20254311 AMAQI
20th Jul 20254312 PMAQI
20th Jul 2025431 PMAQI
20th Jul 2025422 PMAQI
20th Jul 2025423 PMAQI
20th Jul 2025434 PMAQI
20th Jul 2025425 PMAQI
20th Jul 2025456 PMAQI
20th Jul 2025547 PMAQI
20th Jul 2025548 PMAQI
20th Jul 2025549 PMAQI
20th Jul 20255410 PMAQI
20th Jul 20255411 PMAQI
21st Jul 20255412 AMAQI
21st Jul 2025551 AMAQI
21st Jul 2025552 AMAQI
21st Jul 2025543 AMAQI
21st Jul 2025554 AMAQI
25°C23/27°C
21st Jul 2025555 AMAQI
21st Jul 2025556 AMAQI
21st Jul 2025357 AMAQI
21st Jul 2025268 AMAQI
21st Jul 2025269 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20253911 AMAQI
21st Jul 20254012 PMAQI
21st Jul 2025381 PMAQI
21st Jul 2025422 PMAQI
21st Jul 2025363 PMAQI
21st Jul 2025354 PMAQI
21st Jul 2025335 PMAQI
21st Jul 2025396 PMAQI
21st Jul 2025527 PMAQI
21st Jul 2025528 PMAQI
21st Jul 2025529 PMAQI
21st Jul 20255210 PMAQI
21st Jul 20255211 PMAQI
22nd Jul 20255412 AMAQI
22nd Jul 2025541 AMAQI
22nd Jul 2025542 AMAQI
22nd Jul 2025543 AMAQI
22nd Jul 2025534 AMAQI
24°C23/24°C
22nd Jul 2025545 AMAQI
22nd Jul 2025546 AMAQI
22nd Jul 2025507 AMAQI
22nd Jul 2025238 AMAQI
22nd Jul 2025319 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252611 AMAQI
22nd Jul 20253012 PMAQI
22nd Jul 2025301 PMAQI
22nd Jul 2025312 PMAQI
22nd Jul 2025313 PMAQI
22nd Jul 2025324 PMAQI
22nd Jul 2025305 PMAQI
22nd Jul 2025376 PMAQI
22nd Jul 2025507 PMAQI
22nd Jul 2025528 PMAQI
22nd Jul 2025529 PMAQI
22nd Jul 20255210 PMAQI
22nd Jul 20255211 PMAQI
23rd Jul 20255312 AMAQI
23rd Jul 2025531 AMAQI
23rd Jul 2025532 AMAQI
23rd Jul 2025523 AMAQI
23rd Jul 2025524 AMAQI
24°C23/24°C
23rd Jul 2025525 AMAQI
23rd Jul 2025526 AMAQI
23rd Jul 2025267 AMAQI
23rd Jul 2025188 AMAQI
23rd Jul 2025169 AMAQI
23rd Jul 20252810 AMAQI
23rd Jul 20253111 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025321 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025324 PMAQI
23rd Jul 2025295 PMAQI
23rd Jul 2025316 PMAQI
23rd Jul 2025487 PMAQI
23rd Jul 2025478 PMAQI
23rd Jul 2025479 PMAQI
23rd Jul 20254810 PMAQI
23rd Jul 20254811 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025511 AMAQI
24th Jul 2025522 AMAQI
24th Jul 2025503 AMAQI
24th Jul 2025504 AMAQI
25°C23/27°C
24th Jul 2025495 AMAQI
24th Jul 2025506 AMAQI
24th Jul 2025287 AMAQI
24th Jul 2025308 AMAQI
24th Jul 2025239 AMAQI
24th Jul 20252610 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253012 PMAQI
24th Jul 2025301 PMAQI
24th Jul 2025312 PMAQI
24th Jul 2025303 PMAQI
24th Jul 2025304 PMAQI
24th Jul 2025325 PMAQI
24th Jul 2025346 PMAQI
24th Jul 2025487 PMAQI
24th Jul 2025488 PMAQI
24th Jul 2025489 PMAQI
24th Jul 20254810 PMAQI
24th Jul 20254811 PMAQI
25th Jul 20254812 AMAQI
25th Jul 2025501 AMAQI
25th Jul 2025492 AMAQI
25th Jul 2025483 AMAQI
25th Jul 2025474 AMAQI
25°C23/28°C
25th Jul 2025485 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025307 AMAQI
25th Jul 2025248 AMAQI
25th Jul 2025269 AMAQI
25th Jul 20252310 AMAQI
25th Jul 20253611 AMAQI
25th Jul 20253512 PMAQI
25th Jul 2025351 PMAQI
25th Jul 2025342 PMAQI
25th Jul 2025333 PMAQI
25th Jul 2025364 PMAQI
25th Jul 2025335 PMAQI
25th Jul 2025366 PMAQI
25th Jul 2025467 PMAQI
25th Jul 2025468 PMAQI
25th Jul 2025479 PMAQI
25th Jul 20254510 PMAQI
25th Jul 20254611 PMAQI
26th Jul 20254612 AMAQI
26th Jul 2025471 AMAQI
26th Jul 2025482 AMAQI
26th Jul 2025463 AMAQI
26th Jul 2025464 AMAQI
25°C23/28°C
26th Jul 2025465 AMAQI
26th Jul 2025466 AMAQI
26th Jul 2025317 AMAQI
26th Jul 2025288 AMAQI
26th Jul 2025329 AMAQI
26th Jul 20252910 AMAQI
26th Jul 20253811 AMAQI
26th Jul 20253812 PMAQI
26th Jul 2025371 PMAQI
26th Jul 2025352 PMAQI
26th Jul 2025323 PMAQI
26th Jul 2025334 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025386 PMAQI
26th Jul 2025487 PMAQI
26th Jul 2025468 PMAQI
26th Jul 2025479 PMAQI
26th Jul 20254610 PMAQI
26th Jul 20254511 PMAQI
27th Jul 20254812 AMAQI
27th Jul 2025491 AMAQI
27th Jul 2025492 AMAQI
27th Jul 2025483 AMAQI
27th Jul 2025484 AMAQI
27°C23/33°C
27th Jul 2025485 AMAQI
27th Jul 2025476 AMAQI
27th Jul 2025387 AMAQI
27th Jul 2025318 AMAQI
27th Jul 2025309 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20254211 AMAQI
27th Jul 20253912 PMAQI
27th Jul 2025381 PMAQI
27th Jul 2025362 PMAQI
27th Jul 2025453 PMAQI
27th Jul 2025434 PMAQI
27th Jul 2025435 PMAQI
27th Jul 2025496 PMAQI
27th Jul 2025507 PMAQI
27th Jul 2025518 PMAQI
27th Jul 2025509 PMAQI
27th Jul 20255010 PMAQI
27th Jul 20254911 PMAQI
28th Jul 20255112 AMAQI
28th Jul 2025511 AMAQI
28th Jul 2025512 AMAQI
28th Jul 2025513 AMAQI
28th Jul 2025524 AMAQI
27°C24/33°C
28th Jul 2025525 AMAQI
28th Jul 2025516 AMAQI
28th Jul 2025497 AMAQI
28th Jul 2025518 AMAQI
28th Jul 2025529 AMAQI
28th Jul 20255010 AMAQI
28th Jul 20255311 AMAQI
28th Jul 20255212 PMAQI
28th Jul 2025471 PMAQI
28th Jul 2025472 PMAQI
28th Jul 2025463 PMAQI
28th Jul 2025464 PMAQI
28th Jul 2025465 PMAQI
28th Jul 2025496 PMAQI
28th Jul 2025527 PMAQI
28th Jul 2025528 PMAQI
28th Jul 2025539 PMAQI
28th Jul 20255410 PMAQI
28th Jul 20255211 PMAQI
29th Jul 20255112 AMAQI
29th Jul 2025511 AMAQI
29th Jul 2025522 AMAQI
29th Jul 2025523 AMAQI
29th Jul 2025524 AMAQI
28°C24/33°C
29th Jul 2025525 AMAQI
29th Jul 2025526 AMAQI
29th Jul 2025497 AMAQI
29th Jul 2025518 AMAQI
29th Jul 2025539 AMAQI
29th Jul 20255210 AMAQI
29th Jul 20255311 AMAQI
29th Jul 20255412 PMAQI
29th Jul 2025531 PMAQI
29th Jul 2025532 PMAQI
29th Jul 2025513 PMAQI
29th Jul 2025534 PMAQI
29th Jul 2025585 PMAQI
29th Jul 2025606 PMAQI
29th Jul 2025547 PMAQI
29th Jul 2025548 PMAQI
29th Jul 2025539 PMAQI
29th Jul 20255310 PMAQI
29th Jul 20255211 PMAQI
30th Jul 20255212 AMAQI
30th Jul 2025521 AMAQI
30th Jul 2025522 AMAQI
30th Jul 2025523 AMAQI
30th Jul 2025524 AMAQI
28°C25/33°C
30th Jul 2025525 AMAQI
30th Jul 2025526 AMAQI
30th Jul 2025507 AMAQI
30th Jul 2025508 AMAQI
30th Jul 2025519 AMAQI
30th Jul 20255210 AMAQI
30th Jul 20255511 AMAQI
30th Jul 20255312 PMAQI
30th Jul 2025511 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025473 PMAQI
30th Jul 2025544 PMAQI
30th Jul 2025545 PMAQI
30th Jul 2025566 PMAQI
30th Jul 2025537 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025549 PMAQI
30th Jul 20255310 PMAQI
30th Jul 20255211 PMAQI
31st Jul 20255212 AMAQI
31st Jul 2025521 AMAQI
31st Jul 2025522 AMAQI
31st Jul 2025523 AMAQI
31st Jul 2025524 AMAQI
28°C26/31°C
31st Jul 2025525 AMAQI
31st Jul 2025526 AMAQI
31st Jul 2025527 AMAQI
31st Jul 2025528 AMAQI
31st Jul 2025429 AMAQI
31st Jul 20254410 AMAQI
31st Jul 20254711 AMAQI
31st Jul 20254712 PMAQI
31st Jul 2025491 PMAQI
31st Jul 2025502 PMAQI
31st Jul 2025483 PMAQI
31st Jul 2025484 PMAQI
31st Jul 2025485 PMAQI
31st Jul 2025516 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025568 PMAQI
31st Jul 2025589 PMAQI
31st Jul 20255810 PMAQI
31st Jul 20255711 PMAQI
1st Aug 20255712 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025563 AMAQI
1st Aug 2025554 AMAQI
28°C25/31°C
1st Aug 2025555 AMAQI
1st Aug 2025556 AMAQI
1st Aug 2025537 AMAQI
1st Aug 2025568 AMAQI
1st Aug 2025569 AMAQI
1st Aug 20255510 AMAQI
1st Aug 20254911 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025451 PMAQI
1st Aug 2025502 PMAQI
1st Aug 2025463 PMAQI
1st Aug 2025504 PMAQI
1st Aug 2025525 PMAQI
1st Aug 2025526 PMAQI
1st Aug 2025507 PMAQI
1st Aug 2025508 PMAQI
1st Aug 2025539 PMAQI
1st Aug 20255510 PMAQI
1st Aug 20255311 PMAQI
2nd Aug 20255612 AMAQI
2nd Aug 2025551 AMAQI
2nd Aug 2025562 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025564 AMAQI
26°C24/29°C
2nd Aug 2025565 AMAQI
2nd Aug 2025566 AMAQI
2nd Aug 2025437 AMAQI
2nd Aug 2025458 AMAQI
2nd Aug 2025479 AMAQI
2nd Aug 20255010 AMAQI
2nd Aug 20254211 AMAQI
2nd Aug 20254912 PMAQI
2nd Aug 2025481 PMAQI
2nd Aug 2025482 PMAQI
2nd Aug 2025433 PMAQI
2nd Aug 2025464 PMAQI
2nd Aug 2025525 PMAQI
2nd Aug 2025556 PMAQI
2nd Aug 2025567 PMAQI
2nd Aug 2025578 PMAQI
2nd Aug 2025589 PMAQI
2nd Aug 20255610 PMAQI
2nd Aug 20255711 PMAQI
3rd Aug 20255812 AMAQI
3rd Aug 2025571 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025543 AMAQI
3rd Aug 2025554 AMAQI
28°C24/32°C
3rd Aug 2025555 AMAQI
3rd Aug 2025556 AMAQI
3rd Aug 2025587 AMAQI
3rd Aug 2025588 AMAQI
3rd Aug 2025599 AMAQI
3rd Aug 20256210 AMAQI
3rd Aug 20256211 AMAQI
3rd Aug 20255812 PMAQI
3rd Aug 2025581 PMAQI
3rd Aug 2025532 PMAQI
3rd Aug 2025483 PMAQI
3rd Aug 2025564 PMAQI
3rd Aug 2025525 PMAQI
3rd Aug 2025546 PMAQI
3rd Aug 2025567 PMAQI
3rd Aug 2025608 PMAQI
3rd Aug 2025589 PMAQI
3rd Aug 20255910 PMAQI
3rd Aug 20255711 PMAQI
4th Aug 20255612 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025562 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025564 AMAQI
28°C26/32°C
4th Aug 2025565 AMAQI
4th Aug 2025576 AMAQI
4th Aug 2025567 AMAQI
4th Aug 2025578 AMAQI
4th Aug 2025579 AMAQI
4th Aug 20256110 AMAQI
4th Aug 20255811 AMAQI
4th Aug 20256012 PMAQI
4th Aug 2025611 PMAQI
4th Aug 2025622 PMAQI
4th Aug 2025563 PMAQI
4th Aug 2025584 PMAQI
4th Aug 2025565 PMAQI
4th Aug 2025556 PMAQI
4th Aug 2025577 PMAQI
4th Aug 2025588 PMAQI
4th Aug 2025599 PMAQI
4th Aug 20255810 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255612 AMAQI
5th Aug 2025571 AMAQI
5th Aug 2025572 AMAQI
5th Aug 2025563 AMAQI
5th Aug 2025584 AMAQI
28°C26/32°C
5th Aug 2025585 AMAQI
5th Aug 2025566 AMAQI
5th Aug 2025537 AMAQI
5th Aug 2025518 AMAQI
5th Aug 2025529 AMAQI
5th Aug 20255410 AMAQI
5th Aug 20255411 AMAQI
5th Aug 20255712 PMAQI
5th Aug 2025471 PMAQI
5th Aug 2025552 PMAQI
5th Aug 2025603 PMAQI
5th Aug 2025574 PMAQI
5th Aug 2025565 PMAQI
5th Aug 2025576 PMAQI
5th Aug 2025567 PMAQI
5th Aug 2025578 PMAQI
5th Aug 2025559 PMAQI
5th Aug 20255510 PMAQI
5th Aug 20255611 PMAQI
6th Aug 20255712 AMAQI
6th Aug 2025561 AMAQI
6th Aug 2025562 AMAQI
6th Aug 2025563 AMAQI
6th Aug 2025564 AMAQI
26°C22/29°C
6th Aug 2025565 AMAQI
6th Aug 2025566 AMAQI
6th Aug 2025517 AMAQI
6th Aug 2025548 AMAQI
6th Aug 2025539 AMAQI
6th Aug 20255710 AMAQI
6th Aug 20255211 AMAQI
6th Aug 20255212 PMAQI
6th Aug 2025521 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025343 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025345 PMAQI
6th Aug 2025456 PMAQI
6th Aug 2025497 PMAQI
6th Aug 2025468 PMAQI
6th Aug 2025489 PMAQI
6th Aug 20255210 PMAQI
6th Aug 20255211 PMAQI
7th Aug 20255612 AMAQI
7th Aug 2025561 AMAQI
7th Aug 2025552 AMAQI
7th Aug 2025553 AMAQI
7th Aug 2025554 AMAQI
25°C23/29°C
7th Aug 2025555 AMAQI
7th Aug 2025556 AMAQI
7th Aug 2025367 AMAQI
7th Aug 2025398 AMAQI
7th Aug 2025489 AMAQI
7th Aug 20253710 AMAQI
7th Aug 20253311 AMAQI
7th Aug 20253812 PMAQI
7th Aug 2025361 PMAQI
7th Aug 2025342 PMAQI
7th Aug 2025363 PMAQI
7th Aug 2025434 PMAQI
7th Aug 2025445 PMAQI
7th Aug 2025466 PMAQI
7th Aug 2025537 PMAQI
7th Aug 2025528 PMAQI
7th Aug 2025509 PMAQI
7th Aug 20255210 PMAQI
7th Aug 20255111 PMAQI
8th Aug 20255412 AMAQI
8th Aug 2025541 AMAQI
8th Aug 2025542 AMAQI
8th Aug 2025533 AMAQI
8th Aug 2025534 AMAQI
26°C24/30°C
8th Aug 2025535 AMAQI
8th Aug 2025536 AMAQI
8th Aug 2025517 AMAQI
8th Aug 2025518 AMAQI
8th Aug 2025529 AMAQI
8th Aug 20254910 AMAQI
8th Aug 20255411 AMAQI
8th Aug 20254912 PMAQI
8th Aug 2025451 PMAQI
8th Aug 2025422 PMAQI
8th Aug 2025373 PMAQI
8th Aug 2025364 PMAQI
8th Aug 2025355 PMAQI
8th Aug 2025386 PMAQI
8th Aug 2025497 PMAQI
8th Aug 2025538 PMAQI
8th Aug 2025539 PMAQI
8th Aug 20255310 PMAQI
8th Aug 20255211 PMAQI
9th Aug 20255212 AMAQI
9th Aug 2025531 AMAQI
9th Aug 2025542 AMAQI
9th Aug 2025533 AMAQI
9th Aug 2025534 AMAQI
27°C24/32°C
9th Aug 2025535 AMAQI
9th Aug 2025536 AMAQI
9th Aug 2025457 AMAQI
9th Aug 2025388 AMAQI
9th Aug 2025419 AMAQI
9th Aug 20253810 AMAQI
9th Aug 20254611 AMAQI
9th Aug 20254412 PMAQI
9th Aug 2025431 PMAQI
9th Aug 2025422 PMAQI
9th Aug 2025443 PMAQI
9th Aug 2025454 PMAQI
9th Aug 2025445 PMAQI
9th Aug 2025516 PMAQI
9th Aug 2025537 PMAQI
9th Aug 2025528 PMAQI
9th Aug 2025539 PMAQI
9th Aug 20255310 PMAQI
9th Aug 20255311 PMAQI
10th Aug 20255212 AMAQI
10th Aug 2025521 AMAQI
10th Aug 2025522 AMAQI
10th Aug 2025523 AMAQI
10th Aug 2025524 AMAQI
28°C24/32°C
10th Aug 2025525 AMAQI
10th Aug 2025526 AMAQI
10th Aug 2025387 AMAQI
10th Aug 2025348 AMAQI
10th Aug 2025369 AMAQI
10th Aug 20253010 AMAQI
10th Aug 20254011 AMAQI
10th Aug 20254112 PMAQI
10th Aug 2025371 PMAQI
10th Aug 2025362 PMAQI
10th Aug 2025363 PMAQI
10th Aug 2025374 PMAQI
10th Aug 2025355 PMAQI
10th Aug 2025366 PMAQI
10th Aug 2025527 PMAQI
10th Aug 2025528 PMAQI
10th Aug 2025539 PMAQI
10th Aug 20255110 PMAQI
10th Aug 20255211 PMAQI
11th Aug 20255212 AMAQI
11th Aug 2025531 AMAQI
11th Aug 2025522 AMAQI
11th Aug 2025523 AMAQI
11th Aug 2025514 AMAQI
27°C24/32°C
11th Aug 2025515 AMAQI
11th Aug 2025526 AMAQI
11th Aug 2025357 AMAQI
11th Aug 2025328 AMAQI
11th Aug 2025349 AMAQI
11th Aug 20252510 AMAQI
11th Aug 20253611 AMAQI
11th Aug 20253712 PMAQI
11th Aug 2025411 PMAQI
11th Aug 2025402 PMAQI
11th Aug 2025373 PMAQI
11th Aug 2025384 PMAQI
11th Aug 2025425 PMAQI
11th Aug 2025466 PMAQI
11th Aug 2025527 PMAQI
11th Aug 2025498 PMAQI
11th Aug 2025559 PMAQI
11th Aug 20255510 PMAQI
11th Aug 20255511 PMAQI
12th Aug 20255012 AMAQI
12th Aug 2025521 AMAQI
12th Aug 2025522 AMAQI
12th Aug 2025493 AMAQI
12th Aug 2025504 AMAQI
27°C24/33°C
12th Aug 2025505 AMAQI
12th Aug 2025506 AMAQI
12th Aug 2025527 AMAQI
12th Aug 2025518 AMAQI
12th Aug 2025529 AMAQI
12th Aug 20255410 AMAQI
12th Aug 20254811 AMAQI
12th Aug 20255012 PMAQI
12th Aug 2025441 PMAQI
12th Aug 2025502 PMAQI
12th Aug 2025453 PMAQI
12th Aug 2025494 PMAQI
12th Aug 2025475 PMAQI
12th Aug 2025466 PMAQI
12th Aug 2025507 PMAQI
12th Aug 2025548 PMAQI
12th Aug 2025559 PMAQI
12th Aug 20255310 PMAQI
12th Aug 20255211 PMAQI
13th Aug 20255112 AMAQI
13th Aug 2025521 AMAQI
13th Aug 2025502 AMAQI
13th Aug 2025523 AMAQI
13th Aug 2025504 AMAQI
28°C24/32°C
13th Aug 2025525 AMAQI
13th Aug 2025526 AMAQI
13th Aug 2025567 AMAQI
13th Aug 2025518 AMAQI
13th Aug 2025569 AMAQI
13th Aug 20255610 AMAQI
13th Aug 20255111 AMAQI
13th Aug 20255512 PMAQI
13th Aug 2025491 PMAQI
13th Aug 2025452 PMAQI
13th Aug 2025483 PMAQI
13th Aug 2025484 PMAQI
13th Aug 2025525 PMAQI
13th Aug 2025466 PMAQI
13th Aug 2025557 PMAQI
13th Aug 2025558 PMAQI
13th Aug 2025579 PMAQI
13th Aug 20255710 PMAQI
13th Aug 20255711 PMAQI
14th Aug 20255312 AMAQI
14th Aug 2025521 AMAQI
14th Aug 2025522 AMAQI
14th Aug 2025523 AMAQI
14th Aug 2025524 AMAQI
28°C24/32°C
14th Aug 2025525 AMAQI
14th Aug 2025536 AMAQI
14th Aug 2025587 AMAQI
14th Aug 2025628 AMAQI
14th Aug 2025609 AMAQI
14th Aug 20255810 AMAQI
14th Aug 20256011 AMAQI
14th Aug 20256012 PMAQI
14th Aug 2025601 PMAQI
14th Aug 2025582 PMAQI
14th Aug 2025593 PMAQI
14th Aug 2025554 PMAQI
14th Aug 2025625 PMAQI
14th Aug 2025576 PMAQI
14th Aug 2025557 PMAQI
14th Aug 2025568 PMAQI
14th Aug 2025559 PMAQI
14th Aug 20255310 PMAQI
14th Aug 20255311 PMAQI
15th Aug 20255412 AMAQI
15th Aug 2025511 AMAQI
15th Aug 2025542 AMAQI
15th Aug 2025553 AMAQI
15th Aug 2025544 AMAQI
28°C25/32°C
15th Aug 2025545 AMAQI
15th Aug 2025536 AMAQI
15th Aug 2025387 AMAQI
15th Aug 2025428 AMAQI
15th Aug 2025489 AMAQI
15th Aug 20254610 AMAQI
15th Aug 20254011 AMAQI
15th Aug 20253912 PMAQI
15th Aug 2025411 PMAQI
15th Aug 2025302 PMAQI
15th Aug 2025373 PMAQI
15th Aug 2025384 PMAQI
15th Aug 2025445 PMAQI
15th Aug 2025516 PMAQI
15th Aug 2025537 PMAQI
15th Aug 2025558 PMAQI
15th Aug 2025559 PMAQI
15th Aug 20255310 PMAQI
15th Aug 20255311 PMAQI
16th Aug 20255412 AMAQI
16th Aug 2025541 AMAQI
16th Aug 2025562 AMAQI
16th Aug 2025543 AMAQI
16th Aug 2025544 AMAQI
23°C22/24°C
16th Aug 2025545 AMAQI
16th Aug 2025526 AMAQI
16th Aug 2025377 AMAQI
16th Aug 2025408 AMAQI
16th Aug 2025389 AMAQI
16th Aug 20253310 AMAQI
16th Aug 20253211 AMAQI
16th Aug 20253112 PMAQI
16th Aug 2025311 PMAQI
16th Aug 2025292 PMAQI
16th Aug 2025343 PMAQI
16th Aug 2025384 PMAQI
16th Aug 2025375 PMAQI
16th Aug 2025416 PMAQI
16th Aug 2025487 PMAQI
16th Aug 2025468 PMAQI
16th Aug 2025469 PMAQI
16th Aug 20254910 PMAQI
16th Aug 20255411 PMAQI
17th Aug 20255112 AMAQI
17th Aug 2025521 AMAQI
17th Aug 2025502 AMAQI
17th Aug 2025493 AMAQI
17th Aug 2025474 AMAQI
25°C22/29°C
17th Aug 2025485 AMAQI
5 AM17th Aug 2025466 AMAQI
17th Aug 2025427 AMAQI
17th Aug 2025358 AMAQI
17th Aug 2025399 AMAQI
17th Aug 20253810 AMAQI
11 AM
6 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 6 AM
53AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 AM - 5 PM
44AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 AM (Avg. 53), while the lowest AQI was between 7 AM to 5 PM (Avg. 44).
Night time
Avg. Highest Time
12 AM - 11 PM
53AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM - 11 PM
53AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 53), while the lowest AQI was between 12 AM to 11 PM (Avg. 53).
2025 Days Vs Air Quality
Lang Son, Lang Son, Vietnam
2025
40%
91
51%
116
9%
20
Total number of days with different AQI categories in last 229 days in 2025 (136 days remaining)
Good
91 DaysModerate
116 DaysPoor
20 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 40%
Health Risk Level:
Significant
In 2025, 40% of 229 days were within WHO’s safe air quality limits, and 60% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Lang Son, Lang Son, 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.
1st January 2025
129AQI
129AQI
2nd January 2025
123AQI
123AQI
3rd January 2025
108AQI
108AQI
4th January 2025
107AQI
107AQI
5th January 2025
109AQI
109AQI
6th January 2025
126AQI
126AQI
7th January 2025
128AQI
128AQI
8th January 2025
116AQI
116AQI
9th January 2025
105AQI
105AQI
10th January 2025
84AQI
84AQI
11th January 2025
84AQI
84AQI
12th January 2025
82AQI
82AQI
13th January 2025
86AQI
86AQI
14th January 2025
99AQI
99AQI
15th January 2025
103AQI
103AQI
16th January 2025
109AQI
109AQI
17th January 2025
110AQI
110AQI
18th January 2025
108AQI
108AQI
19th January 2025
99AQI
99AQI
20th January 2025
113AQI
113AQI
21st January 2025
109AQI
109AQI
22nd January 2025
106AQI
106AQI
23rd January 2025
102AQI
102AQI
24th January 2025
88AQI
88AQI
25th January 2025
77AQI
77AQI
26th January 2025
51AQI
51AQI
27th January 2025
67AQI
67AQI
28th January 2025
77AQI
77AQI
29th January 2025
107AQI
107AQI
30th January 2025
79AQI
79AQI
31st January 2025
83AQI
83AQI
1st February 2025
82AQI
82AQI
2nd February 2025
77AQI
77AQI
3rd February 2025
49AQI
49AQI
4th February 2025
65AQI
65AQI
5th February 2025
91AQI
91AQI
6th February 2025
63AQI
63AQI
7th February 2025
62AQI
62AQI
8th February 2025
69AQI
69AQI
9th February 2025
77AQI
77AQI
10th February 2025
89AQI
89AQI
11th February 2025
100AQI
100AQI
12th February 2025
96AQI
96AQI
13th February 2025
81AQI
81AQI
14th February 2025
108AQI
108AQI
15th February 2025
84AQI
84AQI
16th February 2025
97AQI
97AQI
17th February 2025
87AQI
87AQI
18th February 2025
71AQI
71AQI
19th February 2025
78AQI
78AQI
20th February 2025
69AQI
69AQI
21st February 2025
65AQI
65AQI
22nd February 2025
74AQI
74AQI
23rd February 2025
48AQI
48AQI
24th February 2025
60AQI
60AQI
25th February 2025
69AQI
69AQI
26th February 2025
53AQI
53AQI
27th February 2025
71AQI
71AQI
28th February 2025
66AQI
66AQI
1st March 2025
69AQI
69AQI
2nd March 2025
76AQI
76AQI
3rd March 2025
74AQI
74AQI
4th March 2025
74AQI
74AQI
5th March 2025
74AQI
74AQI
6th March 2025
54AQI
54AQI
7th March 2025
67AQI
67AQI
8th March 2025
71AQI
71AQI
9th March 2025
76AQI
76AQI
10th March 2025
77AQI
77AQI
11th March 2025
73AQI
73AQI
12th March 2025
65AQI
65AQI
13th March 2025
65AQI
65AQI
14th March 2025
71AQI
71AQI
15th March 2025
56AQI
56AQI
16th March 2025
52AQI
52AQI
17th March 2025
72AQI
72AQI
18th March 2025
62AQI
62AQI
19th March 2025
69AQI
69AQI
20th March 2025
75AQI
75AQI
21st March 2025
92AQI
92AQI
22nd March 2025
121AQI
121AQI
23rd March 2025
70AQI
70AQI
24th March 2025
72AQI
72AQI
25th March 2025
75AQI
75AQI
26th March 2025
70AQI
70AQI
27th March 2025
70AQI
70AQI
28th March 2025
67AQI
67AQI
29th March 2025
52AQI
52AQI
30th March 2025
42AQI
42AQI
31st March 2025
45AQI
45AQI
1st April 2025
49AQI
49AQI
2nd April 2025
60AQI
60AQI
3rd April 2025
61AQI
61AQI
4th April 2025
56AQI
56AQI
5th April 2025
53AQI
53AQI
6th April 2025
60AQI
60AQI
7th April 2025
60AQI
60AQI
8th April 2025
53AQI
53AQI
9th April 2025
44AQI
44AQI
10th April 2025
47AQI
47AQI
11th April 2025
48AQI
48AQI
12th April 2025
47AQI
47AQI
13th April 2025
77AQI
77AQI
14th April 2025
72AQI
72AQI
15th April 2025
67AQI
67AQI
16th April 2025
64AQI
64AQI
17th April 2025
54AQI
54AQI
18th April 2025
50AQI
50AQI
19th April 2025
41AQI
41AQI
20th April 2025
33AQI
33AQI
21st April 2025
38AQI
38AQI
22nd April 2025
34AQI
34AQI
23rd April 2025
35AQI
35AQI
24th April 2025
34AQI
34AQI
25th April 2025
28AQI
28AQI
26th April 2025
40AQI
40AQI
27th April 2025
31AQI
31AQI
28th April 2025
34AQI
34AQI
29th April 2025
48AQI
48AQI
30th April 2025
34AQI
34AQI
1st May 2025
35AQI
35AQI
2nd May 2025
51AQI
51AQI
3rd May 2025
49AQI
49AQI
4th May 2025
54AQI
54AQI
5th May 2025
50AQI
50AQI
6th May 2025
55AQI
55AQI
7th May 2025
52AQI
52AQI
8th May 2025
54AQI
54AQI
9th May 2025
60AQI
60AQI
10th May 2025
55AQI
55AQI
11th May 2025
44AQI
44AQI
12th May 2025
56AQI
56AQI
13th May 2025
59AQI
59AQI
14th May 2025
56AQI
56AQI
15th May 2025
48AQI
48AQI
16th May 2025
55AQI
55AQI
17th May 2025
56AQI
56AQI
18th May 2025
55AQI
55AQI
19th May 2025
54AQI
54AQI
20th May 2025
53AQI
53AQI
21st May 2025
55AQI
55AQI
22nd May 2025
51AQI
51AQI
23rd May 2025
47AQI
47AQI
24th May 2025
41AQI
41AQI
25th May 2025
52AQI
52AQI
26th May 2025
53AQI
53AQI
27th May 2025
60AQI
60AQI
28th May 2025
53AQI
53AQI
29th May 2025
41AQI
41AQI
30th May 2025
43AQI
43AQI
31st May 2025
47AQI
47AQI
1st June 2025
46AQI
46AQI
2nd June 2025
44AQI
44AQI
3rd June 2025
38AQI
38AQI
4th June 2025
48AQI
48AQI
5th June 2025
52AQI
52AQI
6th June 2025
48AQI
48AQI
7th June 2025
45AQI
45AQI
8th June 2025
45AQI
45AQI
9th June 2025
40AQI
40AQI
10th June 2025
44AQI
44AQI
11th June 2025
47AQI
47AQI
12th June 2025
43AQI
43AQI
13th June 2025
39AQI
39AQI
14th June 2025
40AQI
40AQI
15th June 2025
37AQI
37AQI
16th June 2025
31AQI
31AQI
17th June 2025
39AQI
39AQI
18th June 2025
46AQI
46AQI
19th June 2025
44AQI
44AQI
20th June 2025
46AQI
46AQI
21st June 2025
42AQI
42AQI
22nd June 2025
39AQI
39AQI
23rd June 2025
37AQI
37AQI
24th June 2025
40AQI
40AQI
25th June 2025
41AQI
41AQI
26th June 2025
42AQI
42AQI
27th June 2025
41AQI
41AQI
28th June 2025
42AQI
42AQI
29th June 2025
43AQI
43AQI
30th June 2025
43AQI
43AQI
1st July 2025
40AQI
40AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
40AQI
40AQI
4th July 2025
47AQI
47AQI
5th July 2025
47AQI
47AQI
6th July 2025
46AQI
46AQI
7th July 2025
48AQI
48AQI
8th July 2025
52AQI
52AQI
9th July 2025
52AQI
52AQI
10th July 2025
48AQI
48AQI
11th July 2025
47AQI
47AQI
12th July 2025
47AQI
47AQI
13th July 2025
48AQI
48AQI
14th July 2025
49AQI
49AQI
15th July 2025
49AQI
49AQI
16th July 2025
49AQI
49AQI
17th July 2025
49AQI
49AQI
18th July 2025
53AQI
53AQI
19th July 2025
57AQI
57AQI
20th July 2025
49AQI
49AQI
21st July 2025
47AQI
47AQI
22nd July 2025
45AQI
45AQI
23rd July 2025
43AQI
43AQI
24th July 2025
42AQI
42AQI
25th July 2025
42AQI
42AQI
26th July 2025
42AQI
42AQI
27th July 2025
45AQI
45AQI
28th July 2025
51AQI
51AQI
29th July 2025
53AQI
53AQI
30th July 2025
52AQI
52AQI
31st July 2025
52AQI
52AQI
1st August 2025
54AQI
54AQI
2nd August 2025
53AQI
53AQI
3rd August 2025
56AQI
56AQI
4th August 2025
57AQI
57AQI
5th August 2025
56AQI
56AQI
6th August 2025
51AQI
51AQI
7th August 2025
48AQI
48AQI
8th August 2025
50AQI
50AQI
9th August 2025
49AQI
49AQI
10th August 2025
46AQI
46AQI
11th August 2025
47AQI
47AQI
12th August 2025
50AQI
50AQI
13th August 2025
52AQI
52AQI
14th August 2025
55AQI
55AQI
15th August 2025
48AQI
48AQI
99AQI
75AQI
69AQI
48AQI
51AQI
42AQI
47AQI
51AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202561AQI
13
18
2
25
1
2
28
1
18
12
10
21
29
1
23
8
7
8
91
116
20
Highest AQI recorded in
January99AQI
Lowest AQI recorded in
June42AQI
202446AQI
11
11
20
8
23
7
23
3
31
30
31
23
8
8
20
1
8
22
1
4
26
20
11
212
125
13
Highest AQI recorded in
December88AQI
Lowest AQI recorded in
April12AQI
202325AQI
31
20
31
27
3
31
30
31
30
1
29
1
30
1
15
12
2
20
9
2
325
27
4
Highest AQI recorded in
November56AQI
Lowest AQI recorded in
January15AQI
202227AQI
1
16
2
3
23
7
9
9
28
3
30
19
5
1
28
23
8
17
10
31
226
44
3
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
January1AQI
Most & Least Polluted Years Over the Last 4 Years
Most Polluted Year Recorded
2025(Avg.)
61AQILeast Polluted Year Recorded
2023(Avg.)
25AQILang Son's annual 2025 AQI (61) shows an average percentage change of 101.3% (worsened AQI) compared to previous years: 2022 (27), 2023 (25), 2024 (46).
