Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Vientiane, Viangchan, 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+

August Air Quality Analysis

Vientiane, Viangchan, Laos

2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
7th Aug 2023
97AQI
Lowest AQI recorded on
27th Aug 2024
35AQI

Same Day Analysis (2nd August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 57 of Moderate air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025

Vientiane, Viangchan, Laos

AQI
Day
Night
.

5 AM2nd Aug 2025

6 PM

4 AM3rd Aug 2025

Day time
Avg. Highest Time
6AM2nd Aug

57AQI

Avg. Lowest Time
5PM2nd Aug

49AQI

Night time
Avg. Highest Time
10PM2nd Aug

59AQI

Avg. Lowest Time
4AM3rd Aug

57AQI

In the last 24 hours,

Vientiane's AQI reached its highest point of 59 at 10 PM during the Night, while the lowest point, 49, was recorded at 5 PM during the Day between 2nd Aug and 3rd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Vientiane, Viangchan, Laos

JulAug
04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025555 AMAQI
4th Jul 2025546 AMAQI
4th Jul 2025547 AMAQI
4th Jul 2025498 AMAQI
4th Jul 2025489 AMAQI
4th Jul 20254810 AMAQI
4th Jul 20255111 AMAQI
4th Jul 20254712 PMAQI
4th Jul 2025441 PMAQI
4th Jul 2025452 PMAQI
4th Jul 2025473 PMAQI
4th Jul 2025494 PMAQI
4th Jul 2025515 PMAQI
4th Jul 2025476 PMAQI
4th Jul 2025517 PMAQI
4th Jul 2025528 PMAQI
4th Jul 2025539 PMAQI
4th Jul 20255410 PMAQI
4th Jul 20255411 PMAQI
5th Jul 20255512 AMAQI
5th Jul 2025561 AMAQI
5th Jul 2025552 AMAQI
5th Jul 2025553 AMAQI
5th Jul 2025554 AMAQI

25°C23/28°C

5th Jul 2025555 AMAQI
5th Jul 2025556 AMAQI
5th Jul 2025537 AMAQI
5th Jul 2025508 AMAQI
5th Jul 2025529 AMAQI
5th Jul 20254410 AMAQI
5th Jul 20254811 AMAQI
5th Jul 20255012 PMAQI
5th Jul 2025501 PMAQI
5th Jul 2025492 PMAQI
5th Jul 2025513 PMAQI
5th Jul 2025484 PMAQI
5th Jul 2025425 PMAQI
5th Jul 2025496 PMAQI
5th Jul 2025497 PMAQI
5th Jul 2025468 PMAQI
5th Jul 2025479 PMAQI
5th Jul 20254610 PMAQI
5th Jul 20254011 PMAQI
6th Jul 20253212 AMAQI
6th Jul 2025391 AMAQI
6th Jul 2025532 AMAQI
6th Jul 2025553 AMAQI
6th Jul 2025554 AMAQI

26°C23/31°C

6th Jul 2025555 AMAQI
6th Jul 2025556 AMAQI
6th Jul 2025497 AMAQI
6th Jul 2025428 AMAQI
6th Jul 2025429 AMAQI
6th Jul 20253510 AMAQI
6th Jul 20254511 AMAQI
6th Jul 20254712 PMAQI
6th Jul 2025451 PMAQI
6th Jul 2025402 PMAQI
6th Jul 2025463 PMAQI
6th Jul 2025444 PMAQI
6th Jul 2025475 PMAQI
6th Jul 2025506 PMAQI
6th Jul 2025527 PMAQI
6th Jul 2025538 PMAQI
6th Jul 2025549 PMAQI
6th Jul 20255410 PMAQI
6th Jul 20254611 PMAQI
7th Jul 20255012 AMAQI
7th Jul 2025541 AMAQI
7th Jul 2025532 AMAQI
7th Jul 2025533 AMAQI
7th Jul 2025544 AMAQI

25°C23/26°C

7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025508 AMAQI
7th Jul 2025469 AMAQI
7th Jul 20254410 AMAQI
7th Jul 20255211 AMAQI
7th Jul 20254212 PMAQI
7th Jul 2025431 PMAQI
7th Jul 2025422 PMAQI
7th Jul 2025463 PMAQI
7th Jul 2025424 PMAQI
7th Jul 2025475 PMAQI
7th Jul 2025486 PMAQI
7th Jul 2025467 PMAQI
7th Jul 2025488 PMAQI
7th Jul 2025479 PMAQI
7th Jul 20254610 PMAQI
7th Jul 20254911 PMAQI
8th Jul 20255312 AMAQI
8th Jul 2025541 AMAQI
8th Jul 2025532 AMAQI
8th Jul 2025543 AMAQI
8th Jul 2025544 AMAQI

26°C23/30°C

8th Jul 2025545 AMAQI
8th Jul 2025546 AMAQI
8th Jul 2025417 AMAQI
8th Jul 2025458 AMAQI
8th Jul 2025539 AMAQI
8th Jul 20254510 AMAQI
8th Jul 20254911 AMAQI
8th Jul 20254512 PMAQI
8th Jul 2025511 PMAQI
8th Jul 2025532 PMAQI
8th Jul 2025513 PMAQI
8th Jul 2025534 PMAQI
8th Jul 2025535 PMAQI
8th Jul 2025506 PMAQI
8th Jul 2025547 PMAQI
8th Jul 2025538 PMAQI
8th Jul 2025549 PMAQI
8th Jul 20255210 PMAQI
8th Jul 20255411 PMAQI
9th Jul 20255412 AMAQI
9th Jul 2025541 AMAQI
9th Jul 2025542 AMAQI
9th Jul 2025543 AMAQI
9th Jul 2025544 AMAQI

26°C24/29°C

9th Jul 2025545 AMAQI
9th Jul 2025546 AMAQI
9th Jul 2025517 AMAQI
9th Jul 2025518 AMAQI
9th Jul 2025529 AMAQI
9th Jul 20255210 AMAQI
9th Jul 20255011 AMAQI
9th Jul 20254612 PMAQI
9th Jul 2025461 PMAQI
9th Jul 2025502 PMAQI
9th Jul 2025553 PMAQI
9th Jul 2025584 PMAQI
9th Jul 2025525 PMAQI
9th Jul 2025546 PMAQI
9th Jul 2025537 PMAQI
9th Jul 2025548 PMAQI
9th Jul 2025529 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255511 PMAQI
10th Jul 20255512 AMAQI
10th Jul 2025561 AMAQI
10th Jul 2025552 AMAQI
10th Jul 2025553 AMAQI
10th Jul 2025554 AMAQI

27°C24/32°C

10th Jul 2025555 AMAQI
10th Jul 2025556 AMAQI
10th Jul 2025527 AMAQI
10th Jul 2025508 AMAQI
10th Jul 2025539 AMAQI
10th Jul 20255110 AMAQI
10th Jul 20255211 AMAQI
10th Jul 20255612 PMAQI
10th Jul 2025591 PMAQI
10th Jul 2025632 PMAQI
10th Jul 2025583 PMAQI
10th Jul 2025644 PMAQI
10th Jul 2025605 PMAQI
10th Jul 2025556 PMAQI
10th Jul 2025547 PMAQI
10th Jul 2025558 PMAQI
10th Jul 2025569 PMAQI
10th Jul 20255610 PMAQI
10th Jul 20255111 PMAQI
11th Jul 20254612 AMAQI
11th Jul 2025541 AMAQI
11th Jul 2025542 AMAQI
11th Jul 2025553 AMAQI
11th Jul 2025554 AMAQI

27°C25/30°C

11th Jul 2025565 AMAQI
11th Jul 2025566 AMAQI
11th Jul 2025447 AMAQI
11th Jul 2025448 AMAQI
11th Jul 2025459 AMAQI
11th Jul 20254510 AMAQI
11th Jul 20255211 AMAQI
11th Jul 20254812 PMAQI
11th Jul 2025521 PMAQI
11th Jul 2025522 PMAQI
11th Jul 2025493 PMAQI
11th Jul 2025454 PMAQI
11th Jul 2025525 PMAQI
11th Jul 2025516 PMAQI
11th Jul 2025537 PMAQI
11th Jul 2025548 PMAQI
11th Jul 2025549 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255411 PMAQI
12th Jul 20255512 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025553 AMAQI
12th Jul 2025554 AMAQI

24°C23/26°C

12th Jul 2025555 AMAQI
12th Jul 2025566 AMAQI
12th Jul 2025487 AMAQI
12th Jul 2025488 AMAQI
12th Jul 2025439 AMAQI
12th Jul 20254310 AMAQI
12th Jul 20254611 AMAQI
12th Jul 20255512 PMAQI
12th Jul 2025571 PMAQI
12th Jul 2025562 PMAQI
12th Jul 2025523 PMAQI
12th Jul 2025464 PMAQI
12th Jul 2025515 PMAQI
12th Jul 2025546 PMAQI
12th Jul 2025537 PMAQI
12th Jul 2025538 PMAQI
12th Jul 2025539 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025553 AMAQI
13th Jul 2025554 AMAQI

25°C23/28°C

13th Jul 2025555 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025497 AMAQI
13th Jul 2025428 AMAQI
13th Jul 2025409 AMAQI
13th Jul 20254210 AMAQI
13th Jul 20255211 AMAQI
13th Jul 20255412 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025482 PMAQI
13th Jul 2025483 PMAQI
13th Jul 2025434 PMAQI
13th Jul 2025455 PMAQI
13th Jul 2025466 PMAQI
13th Jul 2025497 PMAQI
13th Jul 2025488 PMAQI
13th Jul 2025509 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255611 PMAQI
14th Jul 20255412 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025554 AMAQI

27°C24/32°C

14th Jul 2025555 AMAQI
14th Jul 2025556 AMAQI
14th Jul 2025537 AMAQI
14th Jul 2025488 AMAQI
14th Jul 2025439 AMAQI
14th Jul 20254910 AMAQI
14th Jul 20255211 AMAQI
14th Jul 20254712 PMAQI
14th Jul 2025511 PMAQI
14th Jul 2025512 PMAQI
14th Jul 2025513 PMAQI
14th Jul 2025484 PMAQI
14th Jul 2025515 PMAQI
14th Jul 2025516 PMAQI
14th Jul 2025547 PMAQI
14th Jul 2025548 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255412 AMAQI
15th Jul 2025561 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
15th Jul 2025564 AMAQI

27°C25/31°C

15th Jul 2025565 AMAQI
15th Jul 2025576 AMAQI
15th Jul 2025597 AMAQI
15th Jul 2025568 AMAQI
15th Jul 2025549 AMAQI
15th Jul 20255410 AMAQI
15th Jul 20255311 AMAQI
15th Jul 20255212 PMAQI
15th Jul 2025501 PMAQI
15th Jul 2025532 PMAQI
15th Jul 2025523 PMAQI
15th Jul 2025534 PMAQI
15th Jul 2025545 PMAQI
15th Jul 2025516 PMAQI
15th Jul 2025477 PMAQI
15th Jul 2025508 PMAQI
15th Jul 2025519 PMAQI
15th Jul 20254610 PMAQI
15th Jul 20254411 PMAQI
16th Jul 20254812 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025552 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025564 AMAQI

27°C25/30°C

16th Jul 2025565 AMAQI
16th Jul 2025566 AMAQI
16th Jul 2025367 AMAQI
16th Jul 2025338 AMAQI
16th Jul 2025379 AMAQI
16th Jul 20254710 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254212 PMAQI
16th Jul 2025381 PMAQI
16th Jul 2025352 PMAQI
16th Jul 2025363 PMAQI
16th Jul 2025414 PMAQI
16th Jul 2025415 PMAQI
16th Jul 2025386 PMAQI
16th Jul 2025407 PMAQI
16th Jul 2025468 PMAQI
16th Jul 2025479 PMAQI
16th Jul 20254810 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255212 AMAQI
17th Jul 2025541 AMAQI
17th Jul 2025552 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025544 AMAQI

25°C24/28°C

17th Jul 2025545 AMAQI
17th Jul 2025546 AMAQI
17th Jul 2025497 AMAQI
17th Jul 2025458 AMAQI
17th Jul 2025489 AMAQI
17th Jul 20254510 AMAQI
17th Jul 20254711 AMAQI
17th Jul 20254812 PMAQI
17th Jul 2025451 PMAQI
17th Jul 2025442 PMAQI
17th Jul 2025433 PMAQI
17th Jul 2025404 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025427 PMAQI
17th Jul 2025448 PMAQI
17th Jul 2025469 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254711 PMAQI
18th Jul 20254612 AMAQI
18th Jul 2025531 AMAQI
18th Jul 2025542 AMAQI
18th Jul 2025543 AMAQI
18th Jul 2025544 AMAQI

26°C24/30°C

18th Jul 2025545 AMAQI
18th Jul 2025546 AMAQI
18th Jul 2025367 AMAQI
18th Jul 2025358 AMAQI
18th Jul 2025369 AMAQI
18th Jul 20253210 AMAQI
18th Jul 20253811 AMAQI
18th Jul 20253912 PMAQI
18th Jul 2025381 PMAQI
18th Jul 2025372 PMAQI
18th Jul 2025393 PMAQI
18th Jul 2025374 PMAQI
18th Jul 2025395 PMAQI
18th Jul 2025406 PMAQI
18th Jul 2025447 PMAQI
18th Jul 2025448 PMAQI
18th Jul 2025449 PMAQI
18th Jul 20254210 PMAQI
18th Jul 20254111 PMAQI
19th Jul 20254212 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025492 AMAQI
19th Jul 2025523 AMAQI
19th Jul 2025524 AMAQI

27°C23/32°C

19th Jul 2025535 AMAQI
19th Jul 2025536 AMAQI
19th Jul 2025417 AMAQI
19th Jul 2025398 AMAQI
19th Jul 2025369 AMAQI
19th Jul 20253810 AMAQI
19th Jul 20254011 AMAQI
19th Jul 20253912 PMAQI
19th Jul 2025391 PMAQI
19th Jul 2025382 PMAQI
19th Jul 2025383 PMAQI
19th Jul 2025374 PMAQI
19th Jul 2025395 PMAQI
19th Jul 2025386 PMAQI
19th Jul 2025407 PMAQI
19th Jul 2025408 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025481 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
20th Jul 2025534 AMAQI

27°C24/32°C

20th Jul 2025525 AMAQI
20th Jul 2025526 AMAQI
20th Jul 2025447 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025379 AMAQI
20th Jul 20253510 AMAQI
20th Jul 20254111 AMAQI
20th Jul 20254212 PMAQI
20th Jul 2025371 PMAQI
20th Jul 2025352 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025404 PMAQI
20th Jul 2025345 PMAQI
20th Jul 2025396 PMAQI
20th Jul 2025397 PMAQI
20th Jul 2025368 PMAQI
20th Jul 2025439 PMAQI
20th Jul 20254310 PMAQI
20th Jul 20254211 PMAQI
21st Jul 20254112 AMAQI
21st Jul 2025471 AMAQI
21st Jul 2025472 AMAQI
21st Jul 2025513 AMAQI
21st Jul 2025514 AMAQI

27°C24/31°C

21st Jul 2025505 AMAQI
21st Jul 2025516 AMAQI
21st Jul 2025417 AMAQI
21st Jul 2025398 AMAQI
21st Jul 2025389 AMAQI
21st Jul 20254010 AMAQI
21st Jul 20253911 AMAQI
21st Jul 20253812 PMAQI
21st Jul 2025371 PMAQI
21st Jul 2025372 PMAQI
21st Jul 2025373 PMAQI
21st Jul 2025394 PMAQI
21st Jul 2025445 PMAQI
21st Jul 2025476 PMAQI
21st Jul 2025527 PMAQI
21st Jul 2025498 PMAQI
21st Jul 2025499 PMAQI
21st Jul 20254310 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20254012 AMAQI
22nd Jul 2025471 AMAQI
22nd Jul 2025512 AMAQI
22nd Jul 2025503 AMAQI
22nd Jul 2025514 AMAQI

26°C24/29°C

22nd Jul 2025505 AMAQI
22nd Jul 2025506 AMAQI
22nd Jul 2025347 AMAQI
22nd Jul 2025308 AMAQI
22nd Jul 2025289 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20252911 AMAQI
22nd Jul 20253312 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025292 PMAQI
22nd Jul 2025313 PMAQI
22nd Jul 2025314 PMAQI
22nd Jul 2025325 PMAQI
22nd Jul 2025386 PMAQI
22nd Jul 2025417 PMAQI
22nd Jul 2025418 PMAQI
22nd Jul 2025439 PMAQI
22nd Jul 20254510 PMAQI
22nd Jul 20254411 PMAQI
23rd Jul 20254412 AMAQI
23rd Jul 2025461 AMAQI
23rd Jul 2025492 AMAQI
23rd Jul 2025473 AMAQI
23rd Jul 2025474 AMAQI

24°C23/24°C

23rd Jul 2025475 AMAQI
23rd Jul 2025476 AMAQI
23rd Jul 2025297 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025269 AMAQI
23rd Jul 20252210 AMAQI
23rd Jul 20253111 AMAQI
23rd Jul 20252912 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025302 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025264 PMAQI
23rd Jul 2025275 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025397 PMAQI
23rd Jul 2025408 PMAQI
23rd Jul 2025429 PMAQI
23rd Jul 20254310 PMAQI
23rd Jul 20254411 PMAQI
24th Jul 20254512 AMAQI
24th Jul 2025461 AMAQI
24th Jul 2025482 AMAQI
24th Jul 2025463 AMAQI
24th Jul 2025464 AMAQI

24°C23/26°C

24th Jul 2025455 AMAQI
24th Jul 2025466 AMAQI
24th Jul 2025357 AMAQI
24th Jul 2025438 AMAQI
24th Jul 2025329 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253312 PMAQI
24th Jul 2025391 PMAQI
24th Jul 2025422 PMAQI
24th Jul 2025403 PMAQI
24th Jul 2025354 PMAQI
24th Jul 2025385 PMAQI
24th Jul 2025376 PMAQI
24th Jul 2025467 PMAQI
24th Jul 2025468 PMAQI
24th Jul 2025469 PMAQI
24th Jul 20254710 PMAQI
24th Jul 20254911 PMAQI
25th Jul 20254912 AMAQI
25th Jul 2025511 AMAQI
25th Jul 2025482 AMAQI
25th Jul 2025483 AMAQI
25th Jul 2025484 AMAQI

25°C24/27°C

25th Jul 2025475 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025577 AMAQI
25th Jul 2025558 AMAQI
25th Jul 2025499 AMAQI
25th Jul 20254010 AMAQI
25th Jul 20254111 AMAQI
25th Jul 20254312 PMAQI
25th Jul 2025431 PMAQI
25th Jul 2025412 PMAQI
25th Jul 2025443 PMAQI
25th Jul 2025434 PMAQI
25th Jul 2025455 PMAQI
25th Jul 2025446 PMAQI
25th Jul 2025467 PMAQI
25th Jul 2025478 PMAQI
25th Jul 2025499 PMAQI
25th Jul 20255010 PMAQI
25th Jul 20254911 PMAQI
26th Jul 20255012 AMAQI
26th Jul 2025501 AMAQI
26th Jul 2025512 AMAQI
26th Jul 2025513 AMAQI
26th Jul 2025514 AMAQI

25°C23/27°C

26th Jul 2025515 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025527 AMAQI
26th Jul 2025528 AMAQI
26th Jul 2025539 AMAQI
26th Jul 20255110 AMAQI
26th Jul 20255111 AMAQI
26th Jul 20255212 PMAQI
26th Jul 2025531 PMAQI
26th Jul 2025532 PMAQI
26th Jul 2025483 PMAQI
26th Jul 2025484 PMAQI
26th Jul 2025445 PMAQI
26th Jul 2025436 PMAQI
26th Jul 2025487 PMAQI
26th Jul 2025488 PMAQI
26th Jul 2025499 PMAQI
26th Jul 20255110 PMAQI
26th Jul 20255011 PMAQI
27th Jul 20255112 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025522 AMAQI
27th Jul 2025533 AMAQI
27th Jul 2025534 AMAQI

25°C24/27°C

27th Jul 2025535 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025477 AMAQI
27th Jul 2025358 AMAQI
27th Jul 2025369 AMAQI
27th Jul 20254010 AMAQI
27th Jul 20253711 AMAQI
27th Jul 20253512 PMAQI
27th Jul 2025341 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025363 PMAQI
27th Jul 2025394 PMAQI
27th Jul 2025405 PMAQI
27th Jul 2025416 PMAQI
27th Jul 2025477 PMAQI
27th Jul 2025488 PMAQI
27th Jul 2025509 PMAQI
27th Jul 20254810 PMAQI
27th Jul 20254911 PMAQI
28th Jul 20254912 AMAQI
28th Jul 2025501 AMAQI
28th Jul 2025522 AMAQI
28th Jul 2025513 AMAQI
28th Jul 2025524 AMAQI

24°C23/27°C

28th Jul 2025515 AMAQI
28th Jul 2025516 AMAQI
28th Jul 2025427 AMAQI
28th Jul 2025438 AMAQI
28th Jul 2025439 AMAQI
28th Jul 20253710 AMAQI
28th Jul 20253611 AMAQI
28th Jul 20253612 PMAQI
28th Jul 2025361 PMAQI
28th Jul 2025362 PMAQI
28th Jul 2025383 PMAQI
28th Jul 2025394 PMAQI
28th Jul 2025405 PMAQI
28th Jul 2025426 PMAQI
28th Jul 2025487 PMAQI
28th Jul 2025508 PMAQI
28th Jul 2025519 PMAQI
28th Jul 20255010 PMAQI
28th Jul 20254811 PMAQI
29th Jul 20255012 AMAQI
29th Jul 2025511 AMAQI
29th Jul 2025512 AMAQI
29th Jul 2025503 AMAQI
29th Jul 2025484 AMAQI

25°C24/28°C

29th Jul 2025495 AMAQI
29th Jul 2025496 AMAQI
29th Jul 2025447 AMAQI
29th Jul 2025438 AMAQI
29th Jul 2025379 AMAQI
29th Jul 20253210 AMAQI
29th Jul 20253711 AMAQI
29th Jul 20253712 PMAQI
29th Jul 2025411 PMAQI
29th Jul 2025392 PMAQI
29th Jul 2025343 PMAQI
29th Jul 2025354 PMAQI
29th Jul 2025355 PMAQI
29th Jul 2025376 PMAQI
29th Jul 2025457 PMAQI
29th Jul 2025488 PMAQI
29th Jul 2025509 PMAQI
29th Jul 20254810 PMAQI
29th Jul 20254811 PMAQI
30th Jul 20254912 AMAQI
30th Jul 2025491 AMAQI
30th Jul 2025522 AMAQI
30th Jul 2025513 AMAQI
30th Jul 2025514 AMAQI

27°C24/31°C

30th Jul 2025515 AMAQI
30th Jul 2025506 AMAQI
30th Jul 2025437 AMAQI
30th Jul 2025458 AMAQI
30th Jul 2025459 AMAQI
30th Jul 20254210 AMAQI
30th Jul 20254311 AMAQI
30th Jul 20254112 PMAQI
30th Jul 2025421 PMAQI
30th Jul 2025402 PMAQI
30th Jul 2025423 PMAQI
30th Jul 2025454 PMAQI
30th Jul 2025455 PMAQI
30th Jul 2025466 PMAQI
30th Jul 2025527 PMAQI
30th Jul 2025528 PMAQI
30th Jul 2025529 PMAQI
30th Jul 20255210 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

25°C24/26°C

31st Jul 2025525 AMAQI
31st Jul 2025526 AMAQI
31st Jul 2025527 AMAQI
31st Jul 2025528 AMAQI
31st Jul 2025549 AMAQI
31st Jul 20255410 AMAQI
31st Jul 20255411 AMAQI
31st Jul 20255212 PMAQI
31st Jul 2025521 PMAQI
31st Jul 2025532 PMAQI
31st Jul 2025523 PMAQI
31st Jul 2025524 PMAQI
31st Jul 2025535 PMAQI
31st Jul 2025536 PMAQI
31st Jul 2025577 PMAQI
31st Jul 2025578 PMAQI
31st Jul 2025609 PMAQI
31st Jul 20255910 PMAQI
31st Jul 20255911 PMAQI
1st Aug 20255912 AMAQI
1st Aug 2025591 AMAQI
1st Aug 2025552 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025544 AMAQI

27°C24/30°C

1st Aug 2025555 AMAQI
1st Aug 2025556 AMAQI
1st Aug 2025617 AMAQI
1st Aug 2025608 AMAQI
1st Aug 2025589 AMAQI
1st Aug 20255810 AMAQI
1st Aug 20256011 AMAQI
1st Aug 20256012 PMAQI
1st Aug 2025551 PMAQI
1st Aug 2025552 PMAQI
1st Aug 2025573 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025555 PMAQI
1st Aug 2025576 PMAQI
1st Aug 2025607 PMAQI
1st Aug 2025628 PMAQI
1st Aug 2025609 PMAQI
1st Aug 20255910 PMAQI
1st Aug 20256011 PMAQI
2nd Aug 20255912 AMAQI
2nd Aug 2025571 AMAQI
2nd Aug 2025572 AMAQI
2nd Aug 2025573 AMAQI
2nd Aug 2025564 AMAQI

27°C25/32°C

2nd Aug 2025565 AMAQI
2nd Aug 2025576 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025579 AMAQI
2nd Aug 20255410 AMAQI
2nd Aug 20255411 AMAQI
2nd Aug 20255212 PMAQI
2nd Aug 2025521 PMAQI
2nd Aug 2025542 PMAQI
2nd Aug 2025543 PMAQI
2nd Aug 2025544 PMAQI
2nd Aug 2025495 PMAQI
2nd Aug 2025566 PMAQI
2nd Aug 2025587 PMAQI
2nd Aug 2025588 PMAQI
2nd Aug 2025589 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20255911 PMAQI
3rd Aug 20255812 AMAQI
3rd Aug 2025591 AMAQI
3rd Aug 2025572 AMAQI
3rd Aug 2025573 AMAQI
3rd Aug 2025574 AMAQI

28°C24/33°C

3rd Aug 2025575 AMAQI
5 AM
3rd Aug 2025576 AMAQI
3rd Aug 2025597 AMAQI
3rd Aug 2025638 AMAQI
3rd Aug 2025729 AMAQI
3rd Aug 20257110 AMAQI
3rd Aug 20256511 AMAQI
11 AM
3rd Aug 20255612 PMAQI
3rd Aug 2025551 PMAQI
3rd Aug 2025522 PMAQI
3rd Aug 2025533 PMAQI
3rd Aug 2025574 PMAQI
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 - 10 AM

45AQI

4 hours / Day
120 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 10 AM (Avg. 45).
Night time
Avg. Highest Time
1 AM - 4 AM

53AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM

49AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 53), while the lowest AQI was between 12 AM to 12 AM (Avg. 49).

2025 Days Vs Air Quality

Vientiane, Viangchan, Laos

2025

28%

59

49%

104

21%

44

3%

7

Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)

Good
59 Days
Moderate
104 Days
Poor
44 Days
Unhealthy
7 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 28%

Health Risk Level:

Very high

In 2025, 28% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.

Annual Air Quality Insights

Vientiane, Viangchan, 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.

1st January 2025
88AQI
2nd January 2025
87AQI
3rd January 2025
90AQI
4th January 2025
107AQI
5th January 2025
111AQI
6th January 2025
122AQI
7th January 2025
130AQI
8th January 2025
122AQI
9th January 2025
120AQI
10th January 2025
90AQI
11th January 2025
90AQI
12th January 2025
99AQI
13th January 2025
109AQI
14th January 2025
120AQI
15th January 2025
103AQI
16th January 2025
92AQI
17th January 2025
107AQI
18th January 2025
117AQI
19th January 2025
117AQI
20th January 2025
124AQI
21st January 2025
124AQI
22nd January 2025
133AQI
23rd January 2025
137AQI
24th January 2025
141AQI
25th January 2025
140AQI
26th January 2025
104AQI
27th January 2025
84AQI
28th January 2025
87AQI
29th January 2025
98AQI
30th January 2025
104AQI
31st January 2025
118AQI
1st February 2025
123AQI
2nd February 2025
129AQI
3rd February 2025
113AQI
4th February 2025
88AQI
5th February 2025
92AQI
6th February 2025
107AQI
7th February 2025
96AQI
8th February 2025
76AQI
9th February 2025
78AQI
10th February 2025
83AQI
11th February 2025
90AQI
12th February 2025
110AQI
13th February 2025
97AQI
14th February 2025
99AQI
15th February 2025
101AQI
16th February 2025
121AQI
17th February 2025
99AQI
18th February 2025
95AQI
19th February 2025
88AQI
20th February 2025
98AQI
21st February 2025
87AQI
22nd February 2025
86AQI
23rd February 2025
70AQI
24th February 2025
65AQI
25th February 2025
61AQI
26th February 2025
56AQI
27th February 2025
69AQI
28th February 2025
83AQI
1st March 2025
82AQI
2nd March 2025
85AQI
3rd March 2025
100AQI
4th March 2025
118AQI
5th March 2025
114AQI
6th March 2025
113AQI
7th March 2025
78AQI
8th March 2025
77AQI
9th March 2025
83AQI
10th March 2025
71AQI
11th March 2025
87AQI
12th March 2025
99AQI
13th March 2025
79AQI
14th March 2025
85AQI
15th March 2025
104AQI
16th March 2025
86AQI
17th March 2025
82AQI
18th March 2025
82AQI
19th March 2025
101AQI
20th March 2025
103AQI
21st March 2025
126AQI
22nd March 2025
137AQI
23rd March 2025
152AQI
24th March 2025
158AQI
25th March 2025
161AQI
26th March 2025
159AQI
27th March 2025
152AQI
28th March 2025
154AQI
29th March 2025
151AQI
30th March 2025
128AQI
31st March 2025
115AQI
1st April 2025
107AQI
2nd April 2025
120AQI
3rd April 2025
131AQI
4th April 2025
132AQI
5th April 2025
128AQI
6th April 2025
105AQI
7th April 2025
100AQI
8th April 2025
95AQI
9th April 2025
92AQI
10th April 2025
83AQI
11th April 2025
86AQI
12th April 2025
74AQI
13th April 2025
65AQI
14th April 2025
75AQI
15th April 2025
69AQI
16th April 2025
72AQI
17th April 2025
65AQI
18th April 2025
64AQI
19th April 2025
65AQI
20th April 2025
66AQI
21st April 2025
69AQI
22nd April 2025
76AQI
23rd April 2025
81AQI
24th April 2025
86AQI
25th April 2025
90AQI
26th April 2025
88AQI
27th April 2025
77AQI
28th April 2025
78AQI
29th April 2025
73AQI
30th April 2025
77AQI
1st May 2025
76AQI
2nd May 2025
78AQI
3rd May 2025
73AQI
4th May 2025
84AQI
5th May 2025
89AQI
6th May 2025
80AQI
7th May 2025
88AQI
8th May 2025
73AQI
9th May 2025
65AQI
10th May 2025
71AQI
11th May 2025
53AQI
12th May 2025
45AQI
13th May 2025
65AQI
14th May 2025
65AQI
15th May 2025
49AQI
16th May 2025
46AQI
17th May 2025
54AQI
18th May 2025
48AQI
19th May 2025
52AQI
20th May 2025
50AQI
21st May 2025
58AQI
22nd May 2025
53AQI
23rd May 2025
56AQI
24th May 2025
47AQI
25th May 2025
44AQI
26th May 2025
41AQI
27th May 2025
41AQI
28th May 2025
47AQI
29th May 2025
44AQI
30th May 2025
44AQI
31st May 2025
42AQI
1st June 2025
43AQI
2nd June 2025
42AQI
3rd June 2025
44AQI
4th June 2025
57AQI
5th June 2025
59AQI
6th June 2025
62AQI
7th June 2025
66AQI
8th June 2025
62AQI
9th June 2025
58AQI
10th June 2025
58AQI
11th June 2025
49AQI
12th June 2025
45AQI
13th June 2025
49AQI
14th June 2025
51AQI
15th June 2025
38AQI
16th June 2025
39AQI
17th June 2025
44AQI
18th June 2025
48AQI
19th June 2025
44AQI
20th June 2025
44AQI
21st June 2025
46AQI
22nd June 2025
45AQI
23rd June 2025
44AQI
24th June 2025
45AQI
25th June 2025
47AQI
26th June 2025
49AQI
27th June 2025
47AQI
28th June 2025
44AQI
29th June 2025
45AQI
30th June 2025
46AQI
1st July 2025
48AQI
2nd July 2025
43AQI
3rd July 2025
46AQI
4th July 2025
47AQI
5th July 2025
50AQI
6th July 2025
44AQI
7th July 2025
47AQI
8th July 2025
51AQI
9th July 2025
52AQI
10th July 2025
54AQI
11th July 2025
50AQI
12th July 2025
52AQI
13th July 2025
50AQI
14th July 2025
52AQI
15th July 2025
53AQI
16th July 2025
46AQI
17th July 2025
47AQI
18th July 2025
42AQI
19th July 2025
42AQI
20th July 2025
40AQI
21st July 2025
43AQI
22nd July 2025
39AQI
23rd July 2025
39AQI
24th July 2025
42AQI
25th July 2025
47AQI
26th July 2025
50AQI
27th July 2025
46AQI
28th July 2025
46AQI
29th July 2025
45AQI
30th July 2025
48AQI
31st July 2025
54AQI
1st August 2025
58AQI
2nd August 2025
57AQI

110AQI

91AQI

110AQI

86AQI

59AQI

49AQI

47AQI

58AQI

No. of days

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

202579AQI

10
21
21
7
14
10
7
24
6
13
18
22
8
24
7
2
59
104
44
7

Highest AQI recorded in

March

110AQI

Lowest AQI recorded in

July

47AQI

202476AQI

16
15
2
21
6
1
9
3
22
8
7
24
7
23
14
17
24
7
4
5
17
1
27
3
2
26
3
64
190
54
6

Highest AQI recorded in

February

135AQI

Lowest AQI recorded in

September

39AQI

2023108AQI

5
18
7
1
9
16
3
3
20
8
1
9
14
5
1
12
19
7
23
14
16
1
31
15
15
4
18
9
9
20
8
22
1
40
138
110
58
17
1

Highest AQI recorded in

March

186AQI

Lowest AQI recorded in

September

52AQI

2022124AQI

3
1
8
21
1
1
4
17
9
1
12
41
11

Highest AQI recorded in

October

133AQI

Lowest AQI recorded in

November

113AQI

202055AQI

1
1

Highest AQI recorded in

October

55AQI

Lowest AQI recorded in

October

55AQI

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2022(Avg.)
124AQI
Least Polluted Year Recorded
2020(Avg.)
55AQI

Vientiane's annual 2025 AQI (79) shows an average percentage change of -4.3% (improved AQI) compared to previous years: 2020 (55), 2022 (124), 2023 (108), 2024 (76).