Vientiane, Vientiane Prefecture, Laos Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
September Air Quality Analysis
Vientiane, Vientiane Prefecture, Laos
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Sep 2025
54AQILowest AQI recorded on
20th Sep 2025
37AQISame Day Analysis (21st September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 42 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Vientiane, Vientiane Prefecture, Laos
AQI
Day
Night
.
5 AM21st Sep 2025
6 PM
4 AM22nd Sep 2025
Day time
Avg. Highest Time
5AM21st Sep
42AQI
Avg. Lowest Time
4PM21st Sep
22AQI
Night time
Avg. Highest Time
9PM21st Sep
54AQI
Avg. Lowest Time
7PM21st Sep
38AQI
In the last 24 hours,
Vientiane's AQI reached its highest point of 54 at 9 PM during the Night, while the lowest point, 22, was recorded at 4 PM during the Day between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Vientiane, Vientiane Prefecture, Laos
AugSep
23rd - 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 - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd
Day
Night
23rd Aug 2025565 AMAQI
23rd Aug 2025566 AMAQI
23rd Aug 2025477 AMAQI
23rd Aug 2025538 AMAQI
23rd Aug 2025519 AMAQI
23rd Aug 20255710 AMAQI
23rd Aug 20255511 AMAQI
23rd Aug 20255512 PMAQI
23rd Aug 2025501 PMAQI
23rd Aug 2025442 PMAQI
23rd Aug 2025453 PMAQI
23rd Aug 2025424 PMAQI
23rd Aug 2025535 PMAQI
23rd Aug 2025516 PMAQI
23rd Aug 2025527 PMAQI
23rd Aug 2025558 PMAQI
23rd Aug 2025529 PMAQI
23rd Aug 20255510 PMAQI
23rd Aug 20255411 PMAQI
24th Aug 20255212 AMAQI
24th Aug 2025561 AMAQI
24th Aug 2025562 AMAQI
24th Aug 2025553 AMAQI
24th Aug 2025554 AMAQI
27°C23/31°C
24th Aug 2025565 AMAQI
24th Aug 2025556 AMAQI
24th Aug 2025507 AMAQI
24th Aug 2025498 AMAQI
24th Aug 2025499 AMAQI
24th Aug 20254710 AMAQI
24th Aug 20253911 AMAQI
24th Aug 20253812 PMAQI
24th Aug 2025421 PMAQI
24th Aug 2025482 PMAQI
24th Aug 2025353 PMAQI
24th Aug 2025394 PMAQI
24th Aug 2025475 PMAQI
24th Aug 2025466 PMAQI
24th Aug 2025527 PMAQI
24th Aug 2025568 PMAQI
24th Aug 2025579 PMAQI
24th Aug 20256010 PMAQI
24th Aug 20255511 PMAQI
25th Aug 20255512 AMAQI
25th Aug 2025551 AMAQI
25th Aug 2025542 AMAQI
25th Aug 2025543 AMAQI
25th Aug 2025534 AMAQI
27°C23/32°C
25th Aug 2025525 AMAQI
25th Aug 2025536 AMAQI
25th Aug 2025547 AMAQI
25th Aug 2025558 AMAQI
25th Aug 2025559 AMAQI
25th Aug 20255710 AMAQI
25th Aug 20254811 AMAQI
25th Aug 20255512 PMAQI
25th Aug 2025471 PMAQI
25th Aug 2025502 PMAQI
25th Aug 2025433 PMAQI
25th Aug 2025434 PMAQI
25th Aug 2025445 PMAQI
25th Aug 2025566 PMAQI
25th Aug 2025547 PMAQI
25th Aug 2025548 PMAQI
25th Aug 2025559 PMAQI
25th Aug 20255610 PMAQI
25th Aug 20255411 PMAQI
26th Aug 20255012 AMAQI
26th Aug 2025551 AMAQI
26th Aug 2025532 AMAQI
26th Aug 2025543 AMAQI
26th Aug 2025544 AMAQI
27°C23/33°C
26th Aug 2025545 AMAQI
26th Aug 2025536 AMAQI
26th Aug 2025477 AMAQI
26th Aug 2025538 AMAQI
26th Aug 2025549 AMAQI
26th Aug 20255310 AMAQI
26th Aug 20254611 AMAQI
26th Aug 20254912 PMAQI
26th Aug 2025401 PMAQI
26th Aug 2025312 PMAQI
26th Aug 2025473 PMAQI
26th Aug 2025424 PMAQI
26th Aug 2025425 PMAQI
26th Aug 2025486 PMAQI
26th Aug 2025527 PMAQI
26th Aug 2025528 PMAQI
26th Aug 2025419 PMAQI
26th Aug 20254510 PMAQI
26th Aug 20254911 PMAQI
27th Aug 20254812 AMAQI
27th Aug 2025521 AMAQI
27th Aug 2025542 AMAQI
27th Aug 2025543 AMAQI
27th Aug 2025534 AMAQI
23°C22/24°C
27th Aug 2025545 AMAQI
27th Aug 2025546 AMAQI
27th Aug 2025387 AMAQI
27th Aug 2025458 AMAQI
27th Aug 2025529 AMAQI
27th Aug 20255410 AMAQI
27th Aug 20254911 AMAQI
27th Aug 20254412 PMAQI
27th Aug 2025441 PMAQI
27th Aug 2025492 PMAQI
27th Aug 2025393 PMAQI
27th Aug 2025474 PMAQI
27th Aug 2025435 PMAQI
27th Aug 2025496 PMAQI
27th Aug 2025507 PMAQI
27th Aug 2025538 PMAQI
27th Aug 2025509 PMAQI
27th Aug 20254510 PMAQI
27th Aug 20255311 PMAQI
28th Aug 20255412 AMAQI
28th Aug 2025531 AMAQI
28th Aug 2025522 AMAQI
28th Aug 2025523 AMAQI
28th Aug 2025524 AMAQI
24°C22/29°C
28th Aug 2025525 AMAQI
28th Aug 2025536 AMAQI
28th Aug 2025477 AMAQI
28th Aug 2025518 AMAQI
28th Aug 2025439 AMAQI
28th Aug 20254110 AMAQI
28th Aug 20255111 AMAQI
28th Aug 20254312 PMAQI
28th Aug 2025421 PMAQI
28th Aug 2025452 PMAQI
28th Aug 2025463 PMAQI
28th Aug 2025424 PMAQI
28th Aug 2025435 PMAQI
28th Aug 2025496 PMAQI
28th Aug 2025517 PMAQI
28th Aug 2025528 PMAQI
28th Aug 2025539 PMAQI
28th Aug 20255310 PMAQI
28th Aug 20255411 PMAQI
29th Aug 20255512 AMAQI
29th Aug 2025521 AMAQI
29th Aug 2025532 AMAQI
29th Aug 2025533 AMAQI
29th Aug 2025534 AMAQI
24°C22/26°C
29th Aug 2025525 AMAQI
29th Aug 2025536 AMAQI
29th Aug 2025507 AMAQI
29th Aug 2025548 AMAQI
29th Aug 2025589 AMAQI
29th Aug 20255010 AMAQI
29th Aug 20254911 AMAQI
29th Aug 20254912 PMAQI
29th Aug 2025511 PMAQI
29th Aug 2025482 PMAQI
29th Aug 2025493 PMAQI
29th Aug 2025464 PMAQI
29th Aug 2025475 PMAQI
29th Aug 2025516 PMAQI
29th Aug 2025557 PMAQI
29th Aug 2025568 PMAQI
29th Aug 2025559 PMAQI
29th Aug 20255410 PMAQI
29th Aug 20255511 PMAQI
30th Aug 20255512 AMAQI
30th Aug 2025551 AMAQI
30th Aug 2025552 AMAQI
30th Aug 2025543 AMAQI
30th Aug 2025544 AMAQI
26°C22/32°C
30th Aug 2025555 AMAQI
30th Aug 2025536 AMAQI
30th Aug 2025487 AMAQI
30th Aug 2025478 AMAQI
30th Aug 2025499 AMAQI
30th Aug 20255410 AMAQI
30th Aug 20254911 AMAQI
30th Aug 20254412 PMAQI
30th Aug 2025451 PMAQI
30th Aug 2025432 PMAQI
30th Aug 2025453 PMAQI
30th Aug 2025424 PMAQI
30th Aug 2025445 PMAQI
30th Aug 2025516 PMAQI
30th Aug 2025537 PMAQI
30th Aug 2025558 PMAQI
30th Aug 2025569 PMAQI
30th Aug 20255510 PMAQI
30th Aug 20255211 PMAQI
31st Aug 20255412 AMAQI
31st Aug 2025561 AMAQI
31st Aug 2025542 AMAQI
31st Aug 2025533 AMAQI
31st Aug 2025534 AMAQI
25°C23/27°C
31st Aug 2025545 AMAQI
31st Aug 2025536 AMAQI
31st Aug 2025437 AMAQI
31st Aug 2025378 AMAQI
31st Aug 2025479 AMAQI
31st Aug 20254110 AMAQI
31st Aug 20254211 AMAQI
31st Aug 20254412 PMAQI
31st Aug 2025361 PMAQI
31st Aug 2025412 PMAQI
31st Aug 2025363 PMAQI
31st Aug 2025364 PMAQI
31st Aug 2025385 PMAQI
31st Aug 2025466 PMAQI
31st Aug 2025507 PMAQI
31st Aug 2025518 PMAQI
31st Aug 2025529 PMAQI
31st Aug 20254810 PMAQI
31st Aug 20254811 PMAQI
1st Sep 20254212 AMAQI
1st Sep 2025501 AMAQI
1st Sep 2025532 AMAQI
1st Sep 2025523 AMAQI
1st Sep 2025524 AMAQI
25°C23/27°C
1st Sep 2025535 AMAQI
1st Sep 2025536 AMAQI
1st Sep 2025407 AMAQI
1st Sep 2025448 AMAQI
1st Sep 2025499 AMAQI
1st Sep 20254510 AMAQI
1st Sep 20254511 AMAQI
1st Sep 20254612 PMAQI
1st Sep 2025381 PMAQI
1st Sep 2025412 PMAQI
1st Sep 2025323 PMAQI
1st Sep 2025354 PMAQI
1st Sep 2025365 PMAQI
1st Sep 2025496 PMAQI
1st Sep 2025527 PMAQI
1st Sep 2025548 PMAQI
1st Sep 2025539 PMAQI
1st Sep 20255410 PMAQI
1st Sep 20255311 PMAQI
2nd Sep 20254712 AMAQI
2nd Sep 2025511 AMAQI
2nd Sep 2025512 AMAQI
2nd Sep 2025503 AMAQI
2nd Sep 2025504 AMAQI
26°C22/30°C
2nd Sep 2025495 AMAQI
2nd Sep 2025526 AMAQI
2nd Sep 2025457 AMAQI
2nd Sep 2025478 AMAQI
2nd Sep 2025449 AMAQI
2nd Sep 20254810 AMAQI
2nd Sep 20255411 AMAQI
2nd Sep 20254212 PMAQI
2nd Sep 2025421 PMAQI
2nd Sep 2025482 PMAQI
2nd Sep 2025463 PMAQI
2nd Sep 2025504 PMAQI
2nd Sep 2025415 PMAQI
2nd Sep 2025466 PMAQI
2nd Sep 2025537 PMAQI
2nd Sep 2025528 PMAQI
2nd Sep 2025519 PMAQI
2nd Sep 20255110 PMAQI
2nd Sep 20255411 PMAQI
3rd Sep 20254912 AMAQI
3rd Sep 2025521 AMAQI
3rd Sep 2025522 AMAQI
3rd Sep 2025523 AMAQI
3rd Sep 2025514 AMAQI
26°C23/30°C
3rd Sep 2025515 AMAQI
3rd Sep 2025526 AMAQI
3rd Sep 2025527 AMAQI
3rd Sep 2025578 AMAQI
3rd Sep 2025559 AMAQI
3rd Sep 20255810 AMAQI
3rd Sep 20255311 AMAQI
3rd Sep 20255212 PMAQI
3rd Sep 2025591 PMAQI
3rd Sep 2025532 PMAQI
3rd Sep 2025563 PMAQI
3rd Sep 2025554 PMAQI
3rd Sep 2025525 PMAQI
3rd Sep 2025506 PMAQI
3rd Sep 2025567 PMAQI
3rd Sep 2025598 PMAQI
3rd Sep 2025639 PMAQI
3rd Sep 20255610 PMAQI
3rd Sep 20255511 PMAQI
4th Sep 20255012 AMAQI
4th Sep 2025521 AMAQI
4th Sep 2025532 AMAQI
4th Sep 2025523 AMAQI
4th Sep 2025524 AMAQI
27°C23/32°C
4th Sep 2025535 AMAQI
4th Sep 2025526 AMAQI
4th Sep 2025557 AMAQI
4th Sep 2025618 AMAQI
4th Sep 2025639 AMAQI
4th Sep 20256010 AMAQI
4th Sep 20255011 AMAQI
4th Sep 20255712 PMAQI
4th Sep 2025531 PMAQI
4th Sep 2025452 PMAQI
4th Sep 2025383 PMAQI
4th Sep 2025164 PMAQI
4th Sep 2025155 PMAQI
4th Sep 2025176 PMAQI
4th Sep 2025227 PMAQI
4th Sep 2025378 PMAQI
4th Sep 2025539 PMAQI
4th Sep 20255610 PMAQI
4th Sep 20255311 PMAQI
5th Sep 20255412 AMAQI
5th Sep 2025531 AMAQI
5th Sep 2025522 AMAQI
5th Sep 2025533 AMAQI
5th Sep 2025534 AMAQI
27°C23/32°C
5th Sep 2025535 AMAQI
5th Sep 2025536 AMAQI
5th Sep 2025537 AMAQI
5th Sep 2025468 AMAQI
5th Sep 2025489 AMAQI
5th Sep 20255210 AMAQI
5th Sep 20254011 AMAQI
5th Sep 20255412 PMAQI
5th Sep 2025551 PMAQI
5th Sep 2025412 PMAQI
5th Sep 2025433 PMAQI
5th Sep 2025394 PMAQI
5th Sep 2025355 PMAQI
5th Sep 2025466 PMAQI
5th Sep 2025497 PMAQI
5th Sep 2025558 PMAQI
5th Sep 2025559 PMAQI
5th Sep 20255810 PMAQI
5th Sep 20255511 PMAQI
6th Sep 20255312 AMAQI
6th Sep 2025491 AMAQI
6th Sep 2025492 AMAQI
6th Sep 2025493 AMAQI
6th Sep 2025494 AMAQI
28°C24/33°C
6th Sep 2025495 AMAQI
6th Sep 2025466 AMAQI
6th Sep 2025397 AMAQI
6th Sep 2025288 AMAQI
6th Sep 2025529 AMAQI
6th Sep 20255810 AMAQI
6th Sep 20255311 AMAQI
6th Sep 20254612 PMAQI
6th Sep 2025371 PMAQI
6th Sep 2025442 PMAQI
6th Sep 2025523 PMAQI
6th Sep 2025524 PMAQI
6th Sep 2025455 PMAQI
6th Sep 2025456 PMAQI
6th Sep 2025527 PMAQI
6th Sep 2025588 PMAQI
6th Sep 2025579 PMAQI
6th Sep 20254910 PMAQI
6th Sep 20255411 PMAQI
7th Sep 20254612 AMAQI
7th Sep 2025491 AMAQI
7th Sep 2025512 AMAQI
7th Sep 2025503 AMAQI
7th Sep 2025494 AMAQI
27°C24/30°C
7th Sep 2025505 AMAQI
7th Sep 2025496 AMAQI
7th Sep 2025547 AMAQI
7th Sep 2025648 AMAQI
7th Sep 2025559 AMAQI
7th Sep 20255410 AMAQI
7th Sep 20256311 AMAQI
7th Sep 20255512 PMAQI
7th Sep 2025561 PMAQI
7th Sep 2025562 PMAQI
7th Sep 2025533 PMAQI
7th Sep 2025524 PMAQI
7th Sep 2025605 PMAQI
7th Sep 2025526 PMAQI
7th Sep 2025567 PMAQI
7th Sep 2025578 PMAQI
7th Sep 2025589 PMAQI
7th Sep 20255210 PMAQI
7th Sep 20255211 PMAQI
8th Sep 20255312 AMAQI
8th Sep 2025521 AMAQI
8th Sep 2025512 AMAQI
8th Sep 2025513 AMAQI
8th Sep 2025484 AMAQI
27°C23/32°C
8th Sep 2025515 AMAQI
8th Sep 2025506 AMAQI
8th Sep 2025447 AMAQI
8th Sep 2025638 AMAQI
8th Sep 2025619 AMAQI
8th Sep 20255110 AMAQI
8th Sep 20255411 AMAQI
8th Sep 20254512 PMAQI
8th Sep 2025461 PMAQI
8th Sep 2025442 PMAQI
8th Sep 2025413 PMAQI
8th Sep 2025414 PMAQI
8th Sep 2025445 PMAQI
8th Sep 2025506 PMAQI
8th Sep 2025547 PMAQI
8th Sep 2025568 PMAQI
8th Sep 2025589 PMAQI
8th Sep 20255210 PMAQI
8th Sep 20255011 PMAQI
9th Sep 20254912 AMAQI
9th Sep 2025511 AMAQI
9th Sep 2025522 AMAQI
9th Sep 2025523 AMAQI
9th Sep 2025514 AMAQI
27°C23/31°C
9th Sep 2025525 AMAQI
9th Sep 2025516 AMAQI
9th Sep 2025327 AMAQI
9th Sep 2025368 AMAQI
9th Sep 2025489 AMAQI
9th Sep 20253410 AMAQI
9th Sep 20253711 AMAQI
9th Sep 20254612 PMAQI
9th Sep 2025421 PMAQI
9th Sep 2025352 PMAQI
9th Sep 2025333 PMAQI
9th Sep 2025324 PMAQI
9th Sep 2025335 PMAQI
9th Sep 2025436 PMAQI
9th Sep 2025477 PMAQI
9th Sep 2025528 PMAQI
9th Sep 2025529 PMAQI
9th Sep 20254810 PMAQI
9th Sep 20254911 PMAQI
10th Sep 20255012 AMAQI
10th Sep 2025511 AMAQI
10th Sep 2025512 AMAQI
10th Sep 2025503 AMAQI
10th Sep 2025504 AMAQI
25°C23/29°C
10th Sep 2025505 AMAQI
10th Sep 2025506 AMAQI
10th Sep 2025377 AMAQI
10th Sep 2025428 AMAQI
10th Sep 2025459 AMAQI
10th Sep 20254210 AMAQI
10th Sep 20254811 AMAQI
10th Sep 20253712 PMAQI
10th Sep 2025441 PMAQI
10th Sep 2025432 PMAQI
10th Sep 2025343 PMAQI
10th Sep 2025424 PMAQI
10th Sep 2025425 PMAQI
10th Sep 2025486 PMAQI
10th Sep 2025457 PMAQI
10th Sep 2025508 PMAQI
10th Sep 2025489 PMAQI
10th Sep 20254610 PMAQI
10th Sep 20255111 PMAQI
11th Sep 20255212 AMAQI
11th Sep 2025511 AMAQI
11th Sep 2025512 AMAQI
11th Sep 2025493 AMAQI
11th Sep 2025504 AMAQI
25°C23/29°C
11th Sep 2025485 AMAQI
11th Sep 2025486 AMAQI
11th Sep 2025457 AMAQI
11th Sep 2025458 AMAQI
11th Sep 2025449 AMAQI
11th Sep 20254210 AMAQI
11th Sep 20254811 AMAQI
11th Sep 20253812 PMAQI
11th Sep 2025371 PMAQI
11th Sep 2025432 PMAQI
11th Sep 2025343 PMAQI
11th Sep 2025464 PMAQI
11th Sep 2025455 PMAQI
11th Sep 2025486 PMAQI
11th Sep 2025497 PMAQI
11th Sep 2025488 PMAQI
11th Sep 2025519 PMAQI
11th Sep 20255310 PMAQI
11th Sep 20255511 PMAQI
12th Sep 20255312 AMAQI
12th Sep 2025531 AMAQI
12th Sep 2025502 AMAQI
12th Sep 2025503 AMAQI
12th Sep 2025514 AMAQI
26°C23/31°C
12th Sep 2025505 AMAQI
12th Sep 2025516 AMAQI
12th Sep 2025467 AMAQI
12th Sep 2025488 AMAQI
12th Sep 2025519 AMAQI
12th Sep 20255010 AMAQI
12th Sep 20254411 AMAQI
12th Sep 20254912 PMAQI
12th Sep 2025441 PMAQI
12th Sep 2025422 PMAQI
12th Sep 2025423 PMAQI
12th Sep 2025404 PMAQI
12th Sep 2025445 PMAQI
12th Sep 2025476 PMAQI
12th Sep 2025487 PMAQI
12th Sep 2025558 PMAQI
12th Sep 2025549 PMAQI
12th Sep 20255210 PMAQI
12th Sep 20255211 PMAQI
13th Sep 20254912 AMAQI
13th Sep 2025531 AMAQI
13th Sep 2025512 AMAQI
13th Sep 2025513 AMAQI
13th Sep 2025514 AMAQI
27°C23/32°C
13th Sep 2025515 AMAQI
13th Sep 2025516 AMAQI
13th Sep 2025517 AMAQI
13th Sep 2025498 AMAQI
13th Sep 2025469 AMAQI
13th Sep 20255210 AMAQI
13th Sep 20255511 AMAQI
13th Sep 20254812 PMAQI
13th Sep 2025351 PMAQI
13th Sep 2025612 PMAQI
13th Sep 2025463 PMAQI
13th Sep 2025454 PMAQI
13th Sep 2025415 PMAQI
13th Sep 2025486 PMAQI
13th Sep 2025487 PMAQI
13th Sep 2025528 PMAQI
13th Sep 2025529 PMAQI
13th Sep 20255010 PMAQI
13th Sep 20254911 PMAQI
14th Sep 20255212 AMAQI
14th Sep 2025501 AMAQI
14th Sep 2025482 AMAQI
14th Sep 2025493 AMAQI
14th Sep 2025504 AMAQI
27°C23/32°C
14th Sep 2025485 AMAQI
14th Sep 2025486 AMAQI
14th Sep 2025537 AMAQI
14th Sep 2025528 AMAQI
14th Sep 2025519 AMAQI
14th Sep 20255310 AMAQI
14th Sep 20254211 AMAQI
14th Sep 20254812 PMAQI
14th Sep 2025471 PMAQI
14th Sep 2025462 PMAQI
14th Sep 2025443 PMAQI
14th Sep 2025374 PMAQI
14th Sep 2025405 PMAQI
14th Sep 2025366 PMAQI
14th Sep 2025527 PMAQI
14th Sep 2025488 PMAQI
14th Sep 2025529 PMAQI
14th Sep 20255410 PMAQI
14th Sep 20255111 PMAQI
15th Sep 20255112 AMAQI
15th Sep 2025481 AMAQI
15th Sep 2025502 AMAQI
15th Sep 2025503 AMAQI
15th Sep 2025524 AMAQI
27°C23/32°C
15th Sep 2025515 AMAQI
15th Sep 2025516 AMAQI
15th Sep 2025537 AMAQI
15th Sep 2025588 AMAQI
15th Sep 2025599 AMAQI
15th Sep 20254810 AMAQI
15th Sep 20254511 AMAQI
15th Sep 20254312 PMAQI
15th Sep 2025441 PMAQI
15th Sep 2025442 PMAQI
15th Sep 2025333 PMAQI
15th Sep 2025434 PMAQI
15th Sep 2025405 PMAQI
15th Sep 2025426 PMAQI
15th Sep 2025547 PMAQI
15th Sep 2025568 PMAQI
15th Sep 2025549 PMAQI
15th Sep 20255610 PMAQI
15th Sep 20255011 PMAQI
16th Sep 20255412 AMAQI
16th Sep 2025531 AMAQI
16th Sep 2025522 AMAQI
16th Sep 2025523 AMAQI
16th Sep 2025524 AMAQI
27°C23/32°C
16th Sep 2025525 AMAQI
16th Sep 2025526 AMAQI
16th Sep 2025427 AMAQI
16th Sep 2025388 AMAQI
16th Sep 2025319 AMAQI
16th Sep 20254110 AMAQI
16th Sep 20253611 AMAQI
16th Sep 20253112 PMAQI
16th Sep 2025301 PMAQI
16th Sep 2025352 PMAQI
16th Sep 2025313 PMAQI
16th Sep 2025384 PMAQI
16th Sep 2025355 PMAQI
16th Sep 2025436 PMAQI
16th Sep 2025447 PMAQI
16th Sep 2025538 PMAQI
16th Sep 2025559 PMAQI
16th Sep 20255510 PMAQI
16th Sep 20255911 PMAQI
17th Sep 20255612 AMAQI
17th Sep 2025561 AMAQI
17th Sep 2025522 AMAQI
17th Sep 2025503 AMAQI
17th Sep 2025504 AMAQI
25°C22/31°C
17th Sep 2025505 AMAQI
17th Sep 2025496 AMAQI
17th Sep 2025447 AMAQI
17th Sep 2025418 AMAQI
17th Sep 2025359 AMAQI
17th Sep 20254410 AMAQI
17th Sep 20255511 AMAQI
17th Sep 20254812 PMAQI
17th Sep 2025431 PMAQI
17th Sep 2025402 PMAQI
17th Sep 2025413 PMAQI
17th Sep 2025414 PMAQI
17th Sep 2025385 PMAQI
17th Sep 2025476 PMAQI
17th Sep 2025467 PMAQI
17th Sep 2025498 PMAQI
17th Sep 2025509 PMAQI
17th Sep 20255210 PMAQI
17th Sep 20254911 PMAQI
18th Sep 20254812 AMAQI
18th Sep 2025531 AMAQI
18th Sep 2025532 AMAQI
18th Sep 2025523 AMAQI
18th Sep 2025524 AMAQI
27°C23/32°C
18th Sep 2025525 AMAQI
18th Sep 2025526 AMAQI
18th Sep 2025427 AMAQI
18th Sep 2025418 AMAQI
18th Sep 2025419 AMAQI
18th Sep 20253410 AMAQI
18th Sep 20253911 AMAQI
18th Sep 20253512 PMAQI
18th Sep 2025341 PMAQI
18th Sep 2025322 PMAQI
18th Sep 2025363 PMAQI
18th Sep 2025384 PMAQI
18th Sep 2025395 PMAQI
18th Sep 2025336 PMAQI
18th Sep 2025407 PMAQI
18th Sep 2025518 PMAQI
18th Sep 2025519 PMAQI
18th Sep 20254810 PMAQI
18th Sep 20255111 PMAQI
19th Sep 20255312 AMAQI
19th Sep 2025511 AMAQI
19th Sep 2025522 AMAQI
19th Sep 2025513 AMAQI
19th Sep 2025524 AMAQI
26°C23/32°C
19th Sep 2025515 AMAQI
19th Sep 2025516 AMAQI
19th Sep 2025337 AMAQI
19th Sep 2025278 AMAQI
19th Sep 2025259 AMAQI
19th Sep 20252010 AMAQI
19th Sep 20252311 AMAQI
19th Sep 20251912 PMAQI
19th Sep 2025201 PMAQI
19th Sep 2025192 PMAQI
19th Sep 2025193 PMAQI
19th Sep 2025204 PMAQI
19th Sep 2025245 PMAQI
19th Sep 2025266 PMAQI
19th Sep 2025367 PMAQI
19th Sep 2025428 PMAQI
19th Sep 2025449 PMAQI
19th Sep 20253710 PMAQI
19th Sep 20253811 PMAQI
20th Sep 20253712 AMAQI
20th Sep 2025441 AMAQI
20th Sep 2025472 AMAQI
20th Sep 2025473 AMAQI
20th Sep 2025484 AMAQI
26°C23/31°C
20th Sep 2025485 AMAQI
20th Sep 2025486 AMAQI
20th Sep 2025297 AMAQI
20th Sep 2025248 AMAQI
20th Sep 2025229 AMAQI
20th Sep 20252310 AMAQI
20th Sep 20252611 AMAQI
20th Sep 20252412 PMAQI
20th Sep 2025251 PMAQI
20th Sep 2025242 PMAQI
20th Sep 2025223 PMAQI
20th Sep 2025214 PMAQI
20th Sep 2025235 PMAQI
20th Sep 2025266 PMAQI
20th Sep 2025377 PMAQI
20th Sep 2025458 PMAQI
20th Sep 2025509 PMAQI
20th Sep 20254910 PMAQI
20th Sep 20254311 PMAQI
21st Sep 20254312 AMAQI
21st Sep 2025471 AMAQI
21st Sep 2025422 AMAQI
21st Sep 2025423 AMAQI
21st Sep 2025424 AMAQI
25°C23/29°C
21st Sep 2025425 AMAQI
21st Sep 2025426 AMAQI
21st Sep 2025317 AMAQI
21st Sep 2025278 AMAQI
21st Sep 2025349 AMAQI
21st Sep 20253010 AMAQI
21st Sep 20253311 AMAQI
21st Sep 20252812 PMAQI
21st Sep 2025281 PMAQI
21st Sep 2025222 PMAQI
21st Sep 2025223 PMAQI
21st Sep 2025224 PMAQI
21st Sep 2025255 PMAQI
21st Sep 2025276 PMAQI
21st Sep 2025387 PMAQI
21st Sep 2025468 PMAQI
21st Sep 2025549 PMAQI
21st Sep 20255210 PMAQI
21st Sep 20254811 PMAQI
22nd Sep 20254412 AMAQI
22nd Sep 2025411 AMAQI
22nd Sep 2025402 AMAQI
22nd Sep 2025393 AMAQI
22nd Sep 2025394 AMAQI
26°C24/30°C
22nd Sep 2025385 AMAQI
5 AM22nd Sep 2025396 AMAQI
22nd Sep 2025397 AMAQI
22nd Sep 2025458 AMAQI
22nd Sep 2025449 AMAQI
22nd Sep 20255010 AMAQI
22nd Sep 20254211 AMAQI
11 AM22nd Sep 20253212 PMAQI
22nd Sep 2025241 PMAQI
22nd Sep 2025202 PMAQI
22nd Sep 2025203 PMAQI
22nd Sep 2025214 PMAQI
22nd Sep 2025235 PMAQI
22nd Sep 2025236 PMAQI
6 PM22nd Sep 2025327 PMAQI
22nd Sep 2025338 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 6 AM
51AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
3 PM - 5 PM
39AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 AM (Avg. 51), while the lowest AQI was between 3 PM to 5 PM (Avg. 39).
Night time
Avg. Highest Time
9 PM - 11 PM
52AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM
48AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 52), while the lowest AQI was between 7 PM to 7 PM (Avg. 48).
2025 Days Vs Air Quality
Vientiane, Vientiane Prefecture, Laos
2025
40%
71
54%
96
5%
9
2%
3
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Good
71 DaysModerate
96 DaysPoor
9 DaysUnhealthy
3 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 40%
Health Risk Level:
Significant
In 2025, 40% of 265 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
Vientiane, Vientiane Prefecture, Laos
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
2nd January 2025
3rd January 2025
4th January 2025
5th January 2025
6th January 2025
7th January 2025
8th January 2025
9th January 2025
10th January 2025
11th January 2025
12th January 2025
13th January 2025
14th January 2025
15th January 2025
16th January 2025
17th January 2025
18th January 2025
19th January 2025
20th January 2025
21st January 2025
22nd January 2025
23rd January 2025
24th January 2025
25th January 2025
26th January 2025
27th January 2025
28th January 2025
29th January 2025
30th January 2025
31st January 2025
1st February 2025
2nd February 2025
3rd February 2025
4th February 2025
5th February 2025
6th February 2025
7th February 2025
8th February 2025
9th February 2025
10th February 2025
11th February 2025
12th February 2025
13th February 2025
14th February 2025
15th February 2025
16th February 2025
17th February 2025
18th February 2025
19th February 2025
20th February 2025
21st February 2025
22nd February 2025
23rd February 2025
24th February 2025
25th February 2025
26th February 2025
27th February 2025
28th February 2025
1st March 2025
2nd March 2025
3rd March 2025
4th March 2025
5th March 2025
6th March 2025
7th March 2025
8th March 2025
9th March 2025
10th March 2025
11th March 2025
12th March 2025
13th March 2025
14th March 2025
15th March 2025
16th March 2025
17th March 2025
18th March 2025
19th March 2025
20th March 2025
21st March 2025
22nd March 2025
23rd March 2025
24th March 2025
25th March 2025
26th March 2025
27th March 2025
153AQI
153AQI
28th March 2025
156AQI
156AQI
29th March 2025
155AQI
155AQI
30th March 2025
135AQI
135AQI
31st March 2025
124AQI
124AQI
1st April 2025
118AQI
118AQI
2nd April 2025
127AQI
127AQI
3rd April 2025
134AQI
134AQI
4th April 2025
136AQI
136AQI
5th April 2025
135AQI
135AQI
6th April 2025
106AQI
106AQI
7th April 2025
101AQI
101AQI
8th April 2025
99AQI
99AQI
9th April 2025
92AQI
92AQI
10th April 2025
82AQI
82AQI
11th April 2025
87AQI
87AQI
12th April 2025
76AQI
76AQI
13th April 2025
66AQI
66AQI
14th April 2025
76AQI
76AQI
15th April 2025
69AQI
69AQI
16th April 2025
72AQI
72AQI
17th April 2025
64AQI
64AQI
18th April 2025
64AQI
64AQI
19th April 2025
65AQI
65AQI
20th April 2025
65AQI
65AQI
21st April 2025
67AQI
67AQI
22nd April 2025
77AQI
77AQI
23rd April 2025
80AQI
80AQI
24th April 2025
86AQI
86AQI
25th April 2025
89AQI
89AQI
26th April 2025
89AQI
89AQI
27th April 2025
77AQI
77AQI
28th April 2025
79AQI
79AQI
29th April 2025
73AQI
73AQI
30th April 2025
77AQI
77AQI
1st May 2025
79AQI
79AQI
2nd May 2025
78AQI
78AQI
3rd May 2025
73AQI
73AQI
4th May 2025
84AQI
84AQI
5th May 2025
90AQI
90AQI
6th May 2025
79AQI
79AQI
7th May 2025
87AQI
87AQI
8th May 2025
73AQI
73AQI
9th May 2025
65AQI
65AQI
10th May 2025
67AQI
67AQI
11th May 2025
52AQI
52AQI
12th May 2025
49AQI
49AQI
13th May 2025
65AQI
65AQI
14th May 2025
64AQI
64AQI
15th May 2025
52AQI
52AQI
16th May 2025
49AQI
49AQI
17th May 2025
56AQI
56AQI
18th May 2025
53AQI
53AQI
19th May 2025
54AQI
54AQI
20th May 2025
52AQI
52AQI
21st May 2025
56AQI
56AQI
22nd May 2025
55AQI
55AQI
23rd May 2025
54AQI
54AQI
24th May 2025
47AQI
47AQI
25th May 2025
46AQI
46AQI
26th May 2025
41AQI
41AQI
27th May 2025
41AQI
41AQI
28th May 2025
48AQI
48AQI
29th May 2025
45AQI
45AQI
30th May 2025
44AQI
44AQI
31st May 2025
44AQI
44AQI
1st June 2025
46AQI
46AQI
2nd June 2025
44AQI
44AQI
3rd June 2025
48AQI
48AQI
4th June 2025
59AQI
59AQI
5th June 2025
59AQI
59AQI
6th June 2025
63AQI
63AQI
7th June 2025
66AQI
66AQI
8th June 2025
62AQI
62AQI
9th June 2025
61AQI
61AQI
10th June 2025
60AQI
60AQI
11th June 2025
51AQI
51AQI
12th June 2025
49AQI
49AQI
13th June 2025
54AQI
54AQI
14th June 2025
52AQI
52AQI
15th June 2025
41AQI
41AQI
16th June 2025
43AQI
43AQI
17th June 2025
48AQI
48AQI
18th June 2025
51AQI
51AQI
19th June 2025
51AQI
51AQI
20th June 2025
49AQI
49AQI
21st June 2025
50AQI
50AQI
22nd June 2025
52AQI
52AQI
23rd June 2025
48AQI
48AQI
24th June 2025
45AQI
45AQI
25th June 2025
45AQI
45AQI
26th June 2025
47AQI
47AQI
27th June 2025
49AQI
49AQI
28th June 2025
43AQI
43AQI
29th June 2025
43AQI
43AQI
30th June 2025
44AQI
44AQI
1st July 2025
46AQI
46AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
45AQI
45AQI
4th July 2025
49AQI
49AQI
5th July 2025
50AQI
50AQI
6th July 2025
45AQI
45AQI
7th July 2025
46AQI
46AQI
8th July 2025
53AQI
53AQI
9th July 2025
53AQI
53AQI
10th July 2025
56AQI
56AQI
11th July 2025
50AQI
50AQI
12th July 2025
54AQI
54AQI
13th July 2025
49AQI
49AQI
14th July 2025
53AQI
53AQI
15th July 2025
52AQI
52AQI
16th July 2025
43AQI
43AQI
17th July 2025
47AQI
47AQI
18th July 2025
42AQI
42AQI
19th July 2025
38AQI
38AQI
20th July 2025
39AQI
39AQI
21st July 2025
42AQI
42AQI
22nd July 2025
37AQI
37AQI
23rd July 2025
37AQI
37AQI
24th July 2025
42AQI
42AQI
25th July 2025
47AQI
47AQI
26th July 2025
51AQI
51AQI
27th July 2025
46AQI
46AQI
28th July 2025
46AQI
46AQI
29th July 2025
45AQI
45AQI
30th July 2025
48AQI
48AQI
31st July 2025
54AQI
54AQI
1st August 2025
58AQI
58AQI
2nd August 2025
56AQI
56AQI
3rd August 2025
58AQI
58AQI
4th August 2025
57AQI
57AQI
5th August 2025
57AQI
57AQI
6th August 2025
55AQI
55AQI
7th August 2025
53AQI
53AQI
8th August 2025
55AQI
55AQI
9th August 2025
51AQI
51AQI
10th August 2025
49AQI
49AQI
11th August 2025
48AQI
48AQI
12th August 2025
51AQI
51AQI
13th August 2025
52AQI
52AQI
14th August 2025
55AQI
55AQI
15th August 2025
51AQI
51AQI
16th August 2025
48AQI
48AQI
17th August 2025
47AQI
47AQI
18th August 2025
50AQI
50AQI
19th August 2025
51AQI
51AQI
20th August 2025
53AQI
53AQI
21st August 2025
58AQI
58AQI
22nd August 2025
56AQI
56AQI
23rd August 2025
53AQI
53AQI
24th August 2025
51AQI
51AQI
25th August 2025
53AQI
53AQI
26th August 2025
49AQI
49AQI
27th August 2025
50AQI
50AQI
28th August 2025
51AQI
51AQI
29th August 2025
54AQI
54AQI
30th August 2025
53AQI
53AQI
31st August 2025
49AQI
49AQI
1st September 2025
49AQI
49AQI
2nd September 2025
50AQI
50AQI
3rd September 2025
54AQI
54AQI
4th September 2025
48AQI
48AQI
5th September 2025
51AQI
51AQI
6th September 2025
51AQI
51AQI
7th September 2025
54AQI
54AQI
8th September 2025
53AQI
53AQI
9th September 2025
48AQI
48AQI
10th September 2025
48AQI
48AQI
11th September 2025
49AQI
49AQI
12th September 2025
52AQI
52AQI
13th September 2025
51AQI
51AQI
14th September 2025
50AQI
50AQI
15th September 2025
51AQI
51AQI
16th September 2025
48AQI
48AQI
17th September 2025
50AQI
50AQI
18th September 2025
47AQI
47AQI
19th September 2025
42AQI
42AQI
20th September 2025
37AQI
37AQI
21st September 2025
42AQI
42AQI
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
145AQI
88AQI
59AQI
51AQI
47AQI
53AQI
49AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202560AQI
2
3
23
7
10
21
17
13
23
8
8
23
13
8
71
96
9
3
Highest AQI recorded in
March145AQI
Lowest AQI recorded in
July47AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
60AQILeast Polluted Year Recorded
2025(Avg.)
60AQIVientiane's annual 2025 AQI (60) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
