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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Colombo US Embassy, Colombo, Western, Sri Lanka 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

Colombo US Embassy, Colombo, Western, Sri Lanka

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Aug 2025
73AQI
Lowest AQI recorded on
31st Aug 2024
21AQI

Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 49 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 15th Aug - 16th Aug 2026

Colombo US Embassy, Colombo, Western, Sri Lanka

AQI
Day
Night
.

6 AM15th Aug 2026

6 PM

5 AM16th Aug 2026

Day time
Avg. Highest Time
10AM15th Aug

56AQI

Avg. Lowest Time
5PM15th Aug

27AQI

Night time
Avg. Highest Time
8PM15th Aug

52AQI

Avg. Lowest Time
11PM15th Aug

36AQI

In the last 24 hours,

Colombo US Embassy's AQI reached its highest point of 56 at 10 AM during the Day, while the lowest point, 27, was recorded at 5 PM during the Day between 15th Aug and 16th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Colombo US Embassy, Colombo, Western, Sri Lanka

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
Day
Night
18th Jul 2026366 AMAQI
18th Jul 2026357 AMAQI
18th Jul 2026348 AMAQI
18th Jul 2026609 AMAQI
18th Jul 20265310 AMAQI
18th Jul 20265311 AMAQI
18th Jul 20264912 PMAQI
18th Jul 2026511 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026563 PMAQI
18th Jul 2026544 PMAQI
18th Jul 2026545 PMAQI
18th Jul 2026766 PMAQI
18th Jul 2026557 PMAQI
18th Jul 2026568 PMAQI
18th Jul 2026609 PMAQI
18th Jul 20266710 PMAQI
18th Jul 20265511 PMAQI
19th Jul 20265612 AMAQI
19th Jul 2026641 AMAQI
19th Jul 2026512 AMAQI
19th Jul 2026503 AMAQI
19th Jul 2026574 AMAQI
19th Jul 2026575 AMAQI

27°C26/28°C

19th Jul 2026546 AMAQI
19th Jul 2026557 AMAQI
19th Jul 2026628 AMAQI
19th Jul 2026529 AMAQI
19th Jul 20264810 AMAQI
19th Jul 20265411 AMAQI
19th Jul 20266012 PMAQI
19th Jul 2026671 PMAQI
19th Jul 2026502 PMAQI
19th Jul 2026543 PMAQI
19th Jul 2026534 PMAQI
19th Jul 2026545 PMAQI
19th Jul 2026506 PMAQI
19th Jul 2026497 PMAQI
19th Jul 2026498 PMAQI
19th Jul 2026489 PMAQI
19th Jul 20264910 PMAQI
19th Jul 20265311 PMAQI
20th Jul 20265012 AMAQI
20th Jul 2026621 AMAQI
20th Jul 2026472 AMAQI
20th Jul 2026443 AMAQI
20th Jul 2026554 AMAQI
20th Jul 2026515 AMAQI

27°C26/29°C

20th Jul 2026426 AMAQI
20th Jul 2026387 AMAQI
20th Jul 2026408 AMAQI
20th Jul 2026469 AMAQI
20th Jul 20264010 AMAQI
20th Jul 20263211 AMAQI
20th Jul 20263612 PMAQI
20th Jul 2026481 PMAQI
20th Jul 2026462 PMAQI
20th Jul 2026443 PMAQI
20th Jul 2026464 PMAQI
20th Jul 2026485 PMAQI
20th Jul 2026476 PMAQI
20th Jul 2026607 PMAQI
20th Jul 2026468 PMAQI
20th Jul 2026319 PMAQI
20th Jul 20263310 PMAQI
20th Jul 20263111 PMAQI
21st Jul 20263612 AMAQI
21st Jul 2026421 AMAQI
21st Jul 2026442 AMAQI
21st Jul 2026543 AMAQI
21st Jul 2026604 AMAQI
21st Jul 2026585 AMAQI

27°C26/28°C

21st Jul 2026606 AMAQI
21st Jul 2026517 AMAQI
21st Jul 2026528 AMAQI
21st Jul 20265610 AMAQI
21st Jul 20265411 AMAQI
21st Jul 20265312 PMAQI
21st Jul 2026521 PMAQI
21st Jul 2026552 PMAQI
21st Jul 2026513 PMAQI
21st Jul 2026664 PMAQI
21st Jul 2026405 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026427 PMAQI
21st Jul 2026518 PMAQI
21st Jul 2026259 PMAQI
21st Jul 20261610 PMAQI
21st Jul 20263211 PMAQI
22nd Jul 20265012 AMAQI
22nd Jul 2026661 AMAQI
22nd Jul 2026712 AMAQI
22nd Jul 2026713 AMAQI
22nd Jul 2026634 AMAQI
22nd Jul 2026605 AMAQI

27°C26/29°C

22nd Jul 2026566 AMAQI
22nd Jul 2026557 AMAQI
22nd Jul 2026528 AMAQI
22nd Jul 2026469 AMAQI
22nd Jul 20264210 AMAQI
22nd Jul 20265711 AMAQI
22nd Jul 20262712 PMAQI
22nd Jul 202681 PMAQI
22nd Jul 202682 PMAQI
22nd Jul 2026323 PMAQI
22nd Jul 2026104 PMAQI
22nd Jul 2026105 PMAQI
22nd Jul 2026126 PMAQI
22nd Jul 202687 PMAQI
22nd Jul 2026128 PMAQI
22nd Jul 2026129 PMAQI
22nd Jul 20261210 PMAQI
22nd Jul 20261211 PMAQI
23rd Jul 20261212 AMAQI
23rd Jul 2026331 AMAQI
23rd Jul 2026542 AMAQI
23rd Jul 2026683 AMAQI
23rd Jul 2026664 AMAQI
23rd Jul 2026725 AMAQI

28°C26/29°C

23rd Jul 2026706 AMAQI
23rd Jul 2026667 AMAQI
23rd Jul 2026728 AMAQI
23rd Jul 2026609 AMAQI
23rd Jul 20264610 AMAQI
23rd Jul 20265111 AMAQI
23rd Jul 20265212 PMAQI
23rd Jul 2026541 PMAQI
23rd Jul 2026462 PMAQI
23rd Jul 2026403 PMAQI
23rd Jul 2026424 PMAQI
23rd Jul 2026405 PMAQI
23rd Jul 2026426 PMAQI
23rd Jul 2026497 PMAQI
23rd Jul 2026128 PMAQI
23rd Jul 2026219 PMAQI
23rd Jul 20263210 PMAQI
23rd Jul 20263211 PMAQI
24th Jul 20264512 AMAQI
24th Jul 2026671 AMAQI
24th Jul 2026762 AMAQI
24th Jul 2026653 AMAQI
24th Jul 2026594 AMAQI
24th Jul 2026585 AMAQI

27°C26/29°C

24th Jul 2026576 AMAQI
24th Jul 2026607 AMAQI
24th Jul 2026578 AMAQI
24th Jul 2026589 AMAQI
24th Jul 20264210 AMAQI
24th Jul 20264611 AMAQI
24th Jul 20262912 PMAQI
24th Jul 2026381 PMAQI
24th Jul 2026422 PMAQI
24th Jul 2026323 PMAQI
24th Jul 2026404 PMAQI
24th Jul 2026505 PMAQI
24th Jul 2026296 PMAQI
24th Jul 2026747 PMAQI
24th Jul 2026648 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20262111 PMAQI
25th Jul 2026812 AMAQI
25th Jul 2026161 AMAQI
25th Jul 2026402 AMAQI
25th Jul 2026533 AMAQI
25th Jul 2026524 AMAQI
25th Jul 2026445 AMAQI

28°C26/29°C

25th Jul 2026446 AMAQI
25th Jul 2026387 AMAQI
25th Jul 2026458 AMAQI
25th Jul 2026369 AMAQI
25th Jul 20262110 AMAQI
25th Jul 20261011 AMAQI
25th Jul 20264812 PMAQI
25th Jul 2026531 PMAQI
25th Jul 2026582 PMAQI
25th Jul 2026673 PMAQI
25th Jul 2026144 PMAQI
25th Jul 2026455 PMAQI
25th Jul 2026426 PMAQI
25th Jul 2026807 PMAQI
25th Jul 2026148 PMAQI
25th Jul 2026129 PMAQI
25th Jul 20264910 PMAQI
25th Jul 20265211 PMAQI
26th Jul 20268412 AMAQI
26th Jul 2026821 AMAQI
26th Jul 2026832 AMAQI
26th Jul 2026803 AMAQI
26th Jul 2026794 AMAQI
26th Jul 2026745 AMAQI

28°C26/29°C

26th Jul 2026676 AMAQI
26th Jul 2026637 AMAQI
26th Jul 2026688 AMAQI
26th Jul 2026719 AMAQI
26th Jul 20263810 AMAQI
26th Jul 20264811 AMAQI
26th Jul 20263112 PMAQI
26th Jul 2026491 PMAQI
26th Jul 2026582 PMAQI
26th Jul 2026463 PMAQI
26th Jul 2026384 PMAQI
26th Jul 2026405 PMAQI
26th Jul 2026406 PMAQI
26th Jul 2026407 PMAQI
26th Jul 2026348 PMAQI
26th Jul 2026109 PMAQI
26th Jul 20263510 PMAQI
26th Jul 20261211 PMAQI
27th Jul 20261012 AMAQI
27th Jul 2026381 AMAQI
27th Jul 2026672 AMAQI
27th Jul 2026123 AMAQI
27th Jul 2026404 AMAQI
27th Jul 2026365 AMAQI

28°C26/29°C

27th Jul 2026606 AMAQI
27th Jul 2026607 AMAQI
27th Jul 2026538 AMAQI
27th Jul 2026509 AMAQI
27th Jul 20264910 AMAQI
27th Jul 20265211 AMAQI
27th Jul 20265312 PMAQI
27th Jul 2026551 PMAQI
27th Jul 2026512 PMAQI
27th Jul 2026523 PMAQI
27th Jul 2026574 PMAQI
27th Jul 2026605 PMAQI
27th Jul 2026606 PMAQI
27th Jul 2026647 PMAQI
27th Jul 2026668 PMAQI
27th Jul 2026629 PMAQI
27th Jul 20266210 PMAQI
27th Jul 20266311 PMAQI
28th Jul 20266212 AMAQI
28th Jul 2026601 AMAQI
28th Jul 2026622 AMAQI
28th Jul 2026623 AMAQI
28th Jul 2026644 AMAQI
28th Jul 2026645 AMAQI

27°C26/29°C

28th Jul 2026716 AMAQI
28th Jul 2026787 AMAQI
28th Jul 2026848 AMAQI
28th Jul 2026819 AMAQI
28th Jul 20266610 AMAQI
28th Jul 20265411 AMAQI
28th Jul 20264612 PMAQI
28th Jul 2026441 PMAQI
28th Jul 2026532 PMAQI
28th Jul 2026363 PMAQI
28th Jul 2026384 PMAQI
28th Jul 2026385 PMAQI
28th Jul 2026346 PMAQI
28th Jul 2026317 PMAQI
28th Jul 2026338 PMAQI
28th Jul 2026369 PMAQI
28th Jul 20263610 PMAQI
28th Jul 20263511 PMAQI
29th Jul 20263112 AMAQI
29th Jul 2026401 AMAQI
29th Jul 2026342 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026384 AMAQI
29th Jul 2026365 AMAQI

27°C26/29°C

29th Jul 2026476 AMAQI
29th Jul 2026567 AMAQI
29th Jul 2026538 AMAQI
29th Jul 2026619 AMAQI
29th Jul 20263810 AMAQI
29th Jul 20264811 AMAQI
29th Jul 20264812 PMAQI
29th Jul 2026441 PMAQI
29th Jul 2026462 PMAQI
29th Jul 2026273 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026276 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026368 PMAQI
29th Jul 2026389 PMAQI
29th Jul 20262310 PMAQI
29th Jul 20262511 PMAQI
30th Jul 20262312 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026213 AMAQI
30th Jul 2026224 AMAQI
30th Jul 2026255 AMAQI

27°C26/29°C

30th Jul 2026236 AMAQI
30th Jul 2026257 AMAQI
30th Jul 2026298 AMAQI
30th Jul 2026299 AMAQI
30th Jul 20262710 AMAQI
30th Jul 20262711 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026252 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026235 PMAQI
30th Jul 2026276 PMAQI
30th Jul 2026297 PMAQI
30th Jul 2026298 PMAQI
30th Jul 2026279 PMAQI
30th Jul 20262910 PMAQI
30th Jul 20263411 PMAQI
31st Jul 20262712 AMAQI
31st Jul 2026221 AMAQI
31st Jul 2026232 AMAQI
31st Jul 2026233 AMAQI
31st Jul 2026304 AMAQI
31st Jul 2026325 AMAQI

27°C26/29°C

31st Jul 2026316 AMAQI
31st Jul 2026227 AMAQI
31st Jul 2026338 AMAQI
31st Jul 2026369 AMAQI
31st Jul 20263810 AMAQI
31st Jul 20263611 AMAQI
31st Jul 20263612 PMAQI
31st Jul 2026381 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026343 PMAQI
31st Jul 2026414 PMAQI
31st Jul 2026305 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026367 PMAQI
31st Jul 2026318 PMAQI
31st Jul 2026359 PMAQI
31st Jul 20264210 PMAQI
31st Jul 20263711 PMAQI
1st Aug 20264412 AMAQI
1st Aug 2026361 AMAQI
1st Aug 2026622 AMAQI
1st Aug 2026703 AMAQI
1st Aug 2026544 AMAQI
1st Aug 2026535 AMAQI

27°C26/29°C

1st Aug 2026416 AMAQI
1st Aug 2026467 AMAQI
1st Aug 2026428 AMAQI
1st Aug 2026429 AMAQI
1st Aug 20264410 AMAQI
1st Aug 20263111 AMAQI
1st Aug 20263612 PMAQI
1st Aug 2026471 PMAQI
1st Aug 2026562 PMAQI
1st Aug 2026523 PMAQI
1st Aug 2026584 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026366 PMAQI
1st Aug 2026587 PMAQI
1st Aug 2026358 PMAQI
1st Aug 2026109 PMAQI
1st Aug 20261810 PMAQI
1st Aug 20262311 PMAQI
2nd Aug 20264412 AMAQI
2nd Aug 2026641 AMAQI
2nd Aug 2026582 AMAQI
2nd Aug 2026663 AMAQI
2nd Aug 2026624 AMAQI
2nd Aug 2026595 AMAQI

26°C25/27°C

2nd Aug 2026596 AMAQI
2nd Aug 2026527 AMAQI
2nd Aug 2026508 AMAQI
2nd Aug 2026519 AMAQI
2nd Aug 20265210 AMAQI
2nd Aug 20264011 AMAQI
2nd Aug 20265812 PMAQI
2nd Aug 2026511 PMAQI
2nd Aug 2026422 PMAQI
2nd Aug 2026403 PMAQI
2nd Aug 2026424 PMAQI
2nd Aug 2026525 PMAQI
2nd Aug 2026516 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026428 PMAQI
2nd Aug 2026489 PMAQI
2nd Aug 20264410 PMAQI
2nd Aug 20263311 PMAQI
3rd Aug 20264212 AMAQI
3rd Aug 2026461 AMAQI
3rd Aug 2026422 AMAQI
3rd Aug 2026383 AMAQI
3rd Aug 2026364 AMAQI
3rd Aug 2026465 AMAQI

27°C26/28°C

3rd Aug 2026576 AMAQI
3rd Aug 2026577 AMAQI
3rd Aug 2026558 AMAQI
3rd Aug 2026499 AMAQI
3rd Aug 20264010 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20264612 PMAQI
3rd Aug 2026401 PMAQI
3rd Aug 2026312 PMAQI
3rd Aug 2026423 PMAQI
3rd Aug 2026424 PMAQI
3rd Aug 2026485 PMAQI
3rd Aug 2026406 PMAQI
3rd Aug 2026507 PMAQI
3rd Aug 2026548 PMAQI
3rd Aug 2026539 PMAQI
3rd Aug 20265010 PMAQI
3rd Aug 20264411 PMAQI
4th Aug 20264412 AMAQI
4th Aug 2026491 AMAQI
4th Aug 2026522 AMAQI
4th Aug 2026523 AMAQI
4th Aug 2026484 AMAQI
4th Aug 2026505 AMAQI

26°C25/26°C

4th Aug 2026446 AMAQI
4th Aug 2026447 AMAQI
4th Aug 2026468 AMAQI
4th Aug 2026469 AMAQI
4th Aug 20264410 AMAQI
4th Aug 20264611 AMAQI
4th Aug 20265512 PMAQI
4th Aug 2026591 PMAQI
4th Aug 2026502 PMAQI
4th Aug 2026423 PMAQI
4th Aug 2026444 PMAQI
4th Aug 2026505 PMAQI
4th Aug 2026486 PMAQI
4th Aug 2026447 PMAQI
4th Aug 2026488 PMAQI
4th Aug 2026489 PMAQI
4th Aug 20264810 PMAQI
4th Aug 20264811 PMAQI
5th Aug 20264412 AMAQI
5th Aug 2026401 AMAQI
5th Aug 2026402 AMAQI
5th Aug 2026273 AMAQI
5th Aug 2026294 AMAQI
5th Aug 2026515 AMAQI

26°C26/27°C

5th Aug 2026526 AMAQI
5th Aug 2026537 AMAQI
5th Aug 2026498 AMAQI
5th Aug 2026489 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20264412 PMAQI
5th Aug 2026441 PMAQI
5th Aug 2026442 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026524 PMAQI
5th Aug 2026555 PMAQI
5th Aug 2026606 PMAQI
5th Aug 2026547 PMAQI
5th Aug 2026508 PMAQI
5th Aug 2026489 PMAQI
5th Aug 20264810 PMAQI
5th Aug 20265811 PMAQI
6th Aug 20266412 AMAQI
6th Aug 2026491 AMAQI
6th Aug 2026382 AMAQI
6th Aug 2026493 AMAQI
6th Aug 2026464 AMAQI
6th Aug 2026455 AMAQI

27°C26/28°C

6th Aug 2026606 AMAQI
6th Aug 2026607 AMAQI
6th Aug 20261008 AMAQI
6th Aug 2026689 AMAQI
6th Aug 20266510 AMAQI
6th Aug 20265711 AMAQI
6th Aug 20266412 PMAQI
6th Aug 2026601 PMAQI
6th Aug 2026622 PMAQI
6th Aug 2026573 PMAQI
6th Aug 2026604 PMAQI
6th Aug 2026535 PMAQI
6th Aug 2026546 PMAQI
6th Aug 2026547 PMAQI
6th Aug 2026538 PMAQI
6th Aug 2026529 PMAQI
6th Aug 20265110 PMAQI
6th Aug 20264811 PMAQI
7th Aug 20265212 AMAQI
7th Aug 2026511 AMAQI
7th Aug 2026512 AMAQI
7th Aug 2026503 AMAQI
7th Aug 2026544 AMAQI
7th Aug 2026585 AMAQI

27°C26/28°C

7th Aug 2026566 AMAQI
7th Aug 2026607 AMAQI
7th Aug 2026588 AMAQI
7th Aug 2026569 AMAQI
7th Aug 20265410 AMAQI
7th Aug 20265411 AMAQI
7th Aug 20266012 PMAQI
7th Aug 2026641 PMAQI
7th Aug 2026622 PMAQI
7th Aug 2026573 PMAQI
7th Aug 2026554 PMAQI
7th Aug 2026575 PMAQI
7th Aug 2026666 PMAQI
7th Aug 2026647 PMAQI
7th Aug 2026648 PMAQI
7th Aug 2026549 PMAQI
7th Aug 20266810 PMAQI
7th Aug 20266711 PMAQI
8th Aug 20269412 AMAQI
8th Aug 2026741 AMAQI
8th Aug 2026902 AMAQI
8th Aug 2026763 AMAQI
8th Aug 2026824 AMAQI
8th Aug 2026805 AMAQI

27°C26/28°C

8th Aug 2026726 AMAQI
8th Aug 2026737 AMAQI
8th Aug 2026648 AMAQI
8th Aug 2026729 AMAQI
8th Aug 20265510 AMAQI
8th Aug 20267611 AMAQI
8th Aug 20267612 PMAQI
8th Aug 2026841 PMAQI
8th Aug 2026882 PMAQI
8th Aug 2026833 PMAQI
8th Aug 2026844 PMAQI
8th Aug 2026765 PMAQI
8th Aug 2026836 PMAQI
8th Aug 2026467 PMAQI
8th Aug 2026458 PMAQI
8th Aug 2026669 PMAQI
8th Aug 20265510 PMAQI
8th Aug 20265711 PMAQI
9th Aug 20266612 AMAQI
9th Aug 2026661 AMAQI
9th Aug 2026622 AMAQI
9th Aug 2026643 AMAQI
9th Aug 2026684 AMAQI
9th Aug 2026625 AMAQI

26°C26/27°C

9th Aug 2026636 AMAQI
9th Aug 2026697 AMAQI
9th Aug 2026568 AMAQI
9th Aug 2026519 AMAQI
9th Aug 20264410 AMAQI
9th Aug 20264211 AMAQI
9th Aug 20264912 PMAQI
9th Aug 2026521 PMAQI
9th Aug 2026582 PMAQI
9th Aug 2026583 PMAQI
9th Aug 2026484 PMAQI
9th Aug 2026465 PMAQI
9th Aug 2026586 PMAQI
9th Aug 2026467 PMAQI
9th Aug 2026498 PMAQI
9th Aug 2026469 PMAQI
9th Aug 20263810 PMAQI
9th Aug 20263811 PMAQI
10th Aug 20262512 AMAQI
10th Aug 2026251 AMAQI
10th Aug 2026252 AMAQI
10th Aug 2026253 AMAQI
10th Aug 2026254 AMAQI
10th Aug 2026235 AMAQI

26°C26/28°C

10th Aug 2026236 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026458 AMAQI
10th Aug 2026409 AMAQI
10th Aug 20265110 AMAQI
10th Aug 20265111 AMAQI
10th Aug 20264812 PMAQI
10th Aug 2026641 PMAQI
10th Aug 2026672 PMAQI
10th Aug 2026653 PMAQI
10th Aug 2026624 PMAQI
10th Aug 2026625 PMAQI
10th Aug 2026646 PMAQI
10th Aug 2026637 PMAQI
10th Aug 2026588 PMAQI
10th Aug 2026549 PMAQI
10th Aug 20265610 PMAQI
10th Aug 20266311 PMAQI
11th Aug 20266212 AMAQI
11th Aug 2026691 AMAQI
11th Aug 2026632 AMAQI
11th Aug 2026583 AMAQI
11th Aug 2026624 AMAQI
11th Aug 2026705 AMAQI

27°C25/28°C

11th Aug 2026666 AMAQI
11th Aug 2026687 AMAQI
11th Aug 2026588 AMAQI
11th Aug 2026559 AMAQI
11th Aug 20265510 AMAQI
11th Aug 20265211 AMAQI
11th Aug 20265212 PMAQI
11th Aug 2026511 PMAQI
11th Aug 2026502 PMAQI
11th Aug 2026493 PMAQI
11th Aug 2026524 PMAQI
11th Aug 2026515 PMAQI
11th Aug 2026546 PMAQI
11th Aug 2026547 PMAQI
11th Aug 2026478 PMAQI
11th Aug 2026519 PMAQI
11th Aug 20264210 PMAQI
11th Aug 20262911 PMAQI
12th Aug 20263112 AMAQI
12th Aug 2026401 AMAQI
12th Aug 2026462 AMAQI
12th Aug 2026403 AMAQI
12th Aug 2026594 AMAQI
12th Aug 2026565 AMAQI

27°C26/28°C

12th Aug 2026526 AMAQI
12th Aug 2026517 AMAQI
12th Aug 2026368 AMAQI
12th Aug 2026409 AMAQI
12th Aug 20264010 AMAQI
12th Aug 20264811 AMAQI
12th Aug 20265412 PMAQI
12th Aug 2026621 PMAQI
12th Aug 2026722 PMAQI
12th Aug 2026543 PMAQI
12th Aug 2026544 PMAQI
12th Aug 2026565 PMAQI
12th Aug 2026576 PMAQI
12th Aug 2026387 PMAQI
12th Aug 2026358 PMAQI
12th Aug 2026589 PMAQI
12th Aug 20265010 PMAQI
12th Aug 20263811 PMAQI
13th Aug 20263112 AMAQI
13th Aug 2026311 AMAQI
13th Aug 2026312 AMAQI
13th Aug 2026423 AMAQI
13th Aug 2026464 AMAQI
13th Aug 2026445 AMAQI

27°C26/28°C

13th Aug 2026466 AMAQI
13th Aug 2026387 AMAQI
13th Aug 2026108 AMAQI
13th Aug 202689 AMAQI
13th Aug 2026810 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262312 PMAQI
13th Aug 2026861 PMAQI
13th Aug 2026402 PMAQI
13th Aug 2026573 PMAQI
13th Aug 2026584 PMAQI
13th Aug 2026535 PMAQI
13th Aug 2026556 PMAQI
13th Aug 2026547 PMAQI
13th Aug 2026538 PMAQI
13th Aug 2026549 PMAQI
13th Aug 20265410 PMAQI
13th Aug 20265211 PMAQI
14th Aug 20265512 AMAQI
14th Aug 2026381 AMAQI
14th Aug 2026382 AMAQI
14th Aug 2026483 AMAQI
14th Aug 2026484 AMAQI
14th Aug 2026465 AMAQI

27°C25/28°C

14th Aug 2026446 AMAQI
14th Aug 2026447 AMAQI
14th Aug 2026478 AMAQI
14th Aug 2026469 AMAQI
14th Aug 20265210 AMAQI
14th Aug 20264411 AMAQI
14th Aug 20264512 PMAQI
14th Aug 2026511 PMAQI
14th Aug 2026482 PMAQI
14th Aug 2026403 PMAQI
14th Aug 2026254 PMAQI
14th Aug 2026425 PMAQI
14th Aug 2026386 PMAQI
14th Aug 2026427 PMAQI
14th Aug 2026478 PMAQI
14th Aug 2026529 PMAQI
14th Aug 20266710 PMAQI
14th Aug 20266411 PMAQI
15th Aug 20265712 AMAQI
15th Aug 2026581 AMAQI
15th Aug 2026672 AMAQI
15th Aug 2026623 AMAQI
15th Aug 2026604 AMAQI
15th Aug 2026565 AMAQI

27°C26/28°C

15th Aug 2026506 AMAQI
15th Aug 2026507 AMAQI
15th Aug 2026558 AMAQI
15th Aug 2026499 AMAQI
15th Aug 20265610 AMAQI
15th Aug 20265411 AMAQI
15th Aug 20264412 PMAQI
15th Aug 2026421 PMAQI
15th Aug 2026462 PMAQI
15th Aug 2026383 PMAQI
15th Aug 2026344 PMAQI
15th Aug 2026275 PMAQI
15th Aug 2026386 PMAQI
15th Aug 2026457 PMAQI
15th Aug 2026528 PMAQI
15th Aug 2026429 PMAQI
15th Aug 20264810 PMAQI
15th Aug 20263611 PMAQI
16th Aug 20264012 AMAQI
16th Aug 2026401 AMAQI
16th Aug 2026442 AMAQI
16th Aug 2026423 AMAQI
16th Aug 2026384 AMAQI
16th Aug 2026385 AMAQI

27°C26/28°C

16th Aug 2026336 AMAQI
6 AM
16th Aug 2026457 AMAQI
16th Aug 2026808 AMAQI
16th Aug 2026529 AMAQI
16th Aug 20264710 AMAQI
16th Aug 20264011 AMAQI
16th Aug 20265212 PMAQI
12 PM
16th Aug 2026641 PMAQI
16th Aug 2026552 PMAQI
16th Aug 2026553 PMAQI
16th Aug 2026564 PMAQI
16th Aug 2026565 PMAQI
16th Aug 2026606 PMAQI
6 PM
16th Aug 2026567 PMAQI
16th Aug 2026338 PMAQI
16th Aug 2026569 PMAQI
16th Aug 20263110 PMAQI
16th Aug 2026811 PMAQI
12 AM
5 AM

27°C26/28°C

Day time
Avg. Highest Time
8 AM

53AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
10 AM - 11 AM

45AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 8 AM (Avg. 53), while the lowest AQI was between 10 AM to 11 AM (Avg. 45).
Night time
Avg. Highest Time
2 AM - 5 AM

50AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
11 PM

40AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 50), while the lowest AQI was between 11 PM to 11 PM (Avg. 40).

2026 Days Vs Air Quality

Colombo US Embassy, Colombo, Western, Sri Lanka

2026

45%

100

40%

90

15%

34

Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)

Good
100 Days
Moderate
90 Days
Poor
34 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 45%

Health Risk Level:

Significant

In 2026, 45% of 228 days were within WHO’s safe air quality limits, and 55% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights

Colombo US Embassy, Colombo, Western, Sri Lanka

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
75AQI (US)
2nd January 2026
64AQI (US)
3rd January 2026
73AQI (US)
4th January 2026
76AQI (US)
5th January 2026
75AQI (US)
6th January 2026
87AQI (US)
7th January 2026
105AQI (US)
8th January 2026
77AQI (US)
9th January 2026
59AQI (US)
10th January 2026
77AQI (US)
11th January 2026
77AQI (US)
12th January 2026
75AQI (US)
13th January 2026
61AQI (US)
14th January 2026
73AQI (US)
15th January 2026
80AQI (US)
16th January 2026
111AQI (US)
17th January 2026
132AQI (US)
18th January 2026
130AQI (US)
19th January 2026
106AQI (US)
20th January 2026
101AQI (US)
21st January 2026
94AQI (US)
22nd January 2026
87AQI (US)
23rd January 2026
89AQI (US)
24th January 2026
105AQI (US)
25th January 2026
79AQI (US)
26th January 2026
72AQI (US)
27th January 2026
86AQI (US)
28th January 2026
122AQI (US)
29th January 2026
111AQI (US)
30th January 2026
103AQI (US)
31st January 2026
81AQI (US)
1st February 2026
57AQI (US)
2nd February 2026
77AQI (US)
3rd February 2026
107AQI (US)
4th February 2026
100AQI (US)
5th February 2026
102AQI (US)
6th February 2026
88AQI (US)
7th February 2026
86AQI (US)
8th February 2026
124AQI (US)
9th February 2026
121AQI (US)
10th February 2026
111AQI (US)
11th February 2026
90AQI (US)
12th February 2026
107AQI (US)
13th February 2026
124AQI (US)
14th February 2026
102AQI (US)
15th February 2026
113AQI (US)
16th February 2026
117AQI (US)
17th February 2026
108AQI (US)
18th February 2026
97AQI (US)
19th February 2026
83AQI (US)
20th February 2026
78AQI (US)
21st February 2026
79AQI (US)
22nd February 2026
47AQI (US)
23rd February 2026
62AQI (US)
24th February 2026
61AQI (US)
25th February 2026
72AQI (US)
26th February 2026
87AQI (US)
27th February 2026
108AQI (US)
28th February 2026
115AQI (US)
1st March 2026
122AQI (US)
2nd March 2026
134AQI (US)
3rd March 2026
135AQI (US)
4th March 2026
135AQI (US)
5th March 2026
117AQI (US)
6th March 2026
101AQI (US)
7th March 2026
109AQI (US)
8th March 2026
121AQI (US)
9th March 2026
116AQI (US)
10th March 2026
126AQI (US)
11th March 2026
108AQI (US)
12th March 2026
85AQI (US)
13th March 2026
61AQI (US)
14th March 2026
82AQI (US)
15th March 2026
73AQI (US)
16th March 2026
66AQI (US)
17th March 2026
61AQI (US)
18th March 2026
59AQI (US)
19th March 2026
62AQI (US)
20th March 2026
58AQI (US)
21st March 2026
55AQI (US)
22nd March 2026
64AQI (US)
23rd March 2026
69AQI (US)
24th March 2026
67AQI (US)
25th March 2026
68AQI (US)
26th March 2026
84AQI (US)
27th March 2026
72AQI (US)
28th March 2026
81AQI (US)
29th March 2026
83AQI (US)
30th March 2026
81AQI (US)
31st March 2026
81AQI (US)
1st April 2026
72AQI (US)
2nd April 2026
70AQI (US)
3rd April 2026
67AQI (US)
4th April 2026
42AQI (US)
5th April 2026
42AQI (US)
6th April 2026
41AQI (US)
7th April 2026
44AQI (US)
8th April 2026
44AQI (US)
9th April 2026
43AQI (US)
10th April 2026
64AQI (US)
11th April 2026
66AQI (US)
12th April 2026
60AQI (US)
13th April 2026
57AQI (US)
14th April 2026
62AQI (US)
15th April 2026
40AQI (US)
16th April 2026
50AQI (US)
17th April 2026
18th April 2026
35AQI (US)
19th April 2026
25AQI (US)
20th April 2026
40AQI (US)
21st April 2026
30AQI (US)
22nd April 2026
23rd April 2026
41AQI (US)
24th April 2026
34AQI (US)
25th April 2026
37AQI (US)
26th April 2026
35AQI (US)
27th April 2026
46AQI (US)
28th April 2026
38AQI (US)
29th April 2026
32AQI (US)
30th April 2026
21AQI (US)
1st May 2026
43AQI (US)
2nd May 2026
49AQI (US)
3rd May 2026
56AQI (US)
4th May 2026
48AQI (US)
5th May 2026
36AQI (US)
6th May 2026
65AQI (US)
7th May 2026
60AQI (US)
8th May 2026
63AQI (US)
9th May 2026
10th May 2026
31AQI (US)
11th May 2026
60AQI (US)
12th May 2026
76AQI (US)
13th May 2026
78AQI (US)
14th May 2026
66AQI (US)
15th May 2026
41AQI (US)
16th May 2026
85AQI (US)
17th May 2026
79AQI (US)
18th May 2026
63AQI (US)
19th May 2026
45AQI (US)
20th May 2026
40AQI (US)
21st May 2026
51AQI (US)
22nd May 2026
51AQI (US)
23rd May 2026
45AQI (US)
24th May 2026
47AQI (US)
25th May 2026
56AQI (US)
26th May 2026
68AQI (US)
27th May 2026
44AQI (US)
28th May 2026
47AQI (US)
29th May 2026
48AQI (US)
30th May 2026
42AQI (US)
31st May 2026
49AQI (US)
1st June 2026
36AQI (US)
2nd June 2026
36AQI (US)
3rd June 2026
40AQI (US)
4th June 2026
28AQI (US)
5th June 2026
28AQI (US)
6th June 2026
24AQI (US)
7th June 2026
33AQI (US)
8th June 2026
25AQI (US)
9th June 2026
10AQI (US)
10th June 2026
25AQI (US)
11th June 2026
17AQI (US)
12th June 2026
26AQI (US)
13th June 2026
22AQI (US)
14th June 2026
31AQI (US)
15th June 2026
34AQI (US)
16th June 2026
20AQI (US)
17th June 2026
31AQI (US)
18th June 2026
51AQI (US)
19th June 2026
44AQI (US)
20th June 2026
49AQI (US)
21st June 2026
34AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
31AQI (US)
24th June 2026
22AQI (US)
25th June 2026
20AQI (US)
26th June 2026
34AQI (US)
27th June 2026
38AQI (US)
28th June 2026
30AQI (US)
29th June 2026
31AQI (US)
30th June 2026
30AQI (US)
1st July 2026
29AQI (US)
2nd July 2026
26AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
27AQI (US)
5th July 2026
35AQI (US)
6th July 2026
37AQI (US)
7th July 2026
22AQI (US)
8th July 2026
40AQI (US)
9th July 2026
27AQI (US)
10th July 2026
33AQI (US)
11th July 2026
27AQI (US)
12th July 2026
34AQI (US)
13th July 2026
31AQI (US)
14th July 2026
55AQI (US)
15th July 2026
54AQI (US)
16th July 2026
36AQI (US)
17th July 2026
26AQI (US)
18th July 2026
43AQI (US)
19th July 2026
54AQI (US)
20th July 2026
44AQI (US)
21st July 2026
47AQI (US)
22nd July 2026
36AQI (US)
23rd July 2026
47AQI (US)
24th July 2026
48AQI (US)
25th July 2026
39AQI (US)
26th July 2026
53AQI (US)
27th July 2026
51AQI (US)
28th July 2026
53AQI (US)
29th July 2026
38AQI (US)
30th July 2026
26AQI (US)
31st July 2026
33AQI (US)
1st August 2026
43AQI (US)
2nd August 2026
50AQI (US)
3rd August 2026
45AQI (US)
4th August 2026
48AQI (US)
5th August 2026
46AQI (US)
6th August 2026
57AQI (US)
7th August 2026
58AQI (US)
8th August 2026
73AQI (US)
9th August 2026
54AQI (US)
10th August 2026
46AQI (US)
11th August 2026
55AQI (US)
12th August 2026
49AQI (US)
13th August 2026
42AQI (US)
14th August 2026
46AQI (US)
15th August 2026
49AQI (US)
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

88AQI (US)

94AQI (US)

88AQI (US)

46AQI (US)

54AQI (US)

30AQI (US)

38AQI (US)

51AQI (US)

No. of days

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

202662AQI (US)

21
10
1
14
13
20
11
20
8
15
15
29
1
25
6
10
5
100
90
34

Highest AQI (US) recorded in

February

94AQI (US)

Lowest AQI (US) recorded in

June

30AQI (US)

202572AQI (US)

25
6
17
10
1
25
6
30
2
29
3
27
4
27
31
5
25
2
29
7
20
3
24
7
23
309
32
1

Highest AQI (US) recorded in

February

101AQI (US)

Lowest AQI (US) recorded in

July

55AQI (US)

202462AQI (US)

1
19
10
10
8
16
11
11
19
21
10
22
8
1
30
26
5
12
6
27
4
4
25
1
31
125
183
30

Highest AQI (US) recorded in

March

96AQI (US)

Lowest AQI (US) recorded in

August

36AQI (US)

202366AQI (US)

17
14
1
20
7
1
18
12
1
26
3
12
19
14
16
8
17
12
19
25
5
10
21
4
15
5
26
93
219
36

Highest AQI (US) recorded in

January

100AQI (US)

Lowest AQI (US) recorded in

September

43AQI (US)

202273AQI (US)

6
6
1
9
5
18
13
10
10
3
21
9
11
13
1
18
11
16
13
2
17
11
2
11
15
2
77
121
52
4

Highest AQI (US) recorded in

December

106AQI (US)

Lowest AQI (US) recorded in

June

47AQI (US)

202154AQI (US)

3
19
6
1
19
9
2
16
12
9
7
26
5
22
8
29
2
25
5
21
3
21
9
13
4
1
171
98
27
1

Highest AQI (US) recorded in

February

96AQI (US)

Lowest AQI (US) recorded in

August

35AQI (US)

202052AQI (US)

12
1
9
11
1
13
5
24
6
26
4
30
1
25
4
21
9
1
6
23
1
1
26
4
155
101
8

Highest AQI (US) recorded in

March

80AQI (US)

Lowest AQI (US) recorded in

August

35AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2022(Avg.)
73AQI (US)
Least Polluted Year Recorded
2020(Avg.)
52AQI (US)

Colombo US Embassy's annual 2026 AQI (US) (62) shows an average percentage change of -0.1% (improved AQI (US)) compared to previous years: 2020 (52), 2021 (54), 2022 (73), 2023 (66), 2024 (62), 2025 (72).