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Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, 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+

July Air Quality Analysis

Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, Western, Sri Lanka

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
13th Jul 2024
69AQI
Lowest AQI recorded on
7th Jul 2026
15AQI

Same Day Analysis (15th July):
On this day, AQI across the 3 years varied significantly: 2026 ranks 2nd highest AQI at 55 of Moderate air quality, showing improvement over 2024 on the same day.

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

Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, Western, Sri Lanka

AQI
Day
Night
.

5 AM15th Jul 2026

6 PM

4 AM16th Jul 2026

Day time
Avg. Highest Time
7AM15th Jul

70AQI

Avg. Lowest Time
6PM15th Jul

44AQI

Night time
Avg. Highest Time
2AM16th Jul

74AQI

Avg. Lowest Time
8PM15th Jul

48AQI

In the last 24 hours,

Overseas School of Colombo Sensor 1's AQI reached its highest point of 74 at 2 AM during the Night, while the lowest point, 44, was recorded at 6 PM during the Day between 15th Jul and 16th Jul 2026.

Day & Night AQI Trend : Jun - Jul 2026

Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, Western, Sri Lanka

JunJul
17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
17th Jun 202685 AMAQI
17th Jun 2026106 AMAQI
17th Jun 2026347 AMAQI
17th Jun 2026588 AMAQI
17th Jun 2026649 AMAQI
17th Jun 20266410 AMAQI
17th Jun 20266611 AMAQI
17th Jun 20265812 PMAQI
17th Jun 2026331 PMAQI
17th Jun 2026212 PMAQI
17th Jun 2026383 PMAQI
17th Jun 202684 PMAQI
17th Jun 2026105 PMAQI
17th Jun 202686 PMAQI
17th Jun 2026127 PMAQI
17th Jun 202688 PMAQI
17th Jun 2026129 PMAQI
17th Jun 2026810 PMAQI
17th Jun 20261011 PMAQI
18th Jun 20261412 AMAQI
18th Jun 2026121 AMAQI
18th Jun 2026122 AMAQI
18th Jun 202683 AMAQI
18th Jun 202664 AMAQI

27°C26/28°C

18th Jun 202665 AMAQI
18th Jun 202646 AMAQI
18th Jun 2026167 AMAQI
18th Jun 2026148 AMAQI
18th Jun 202689 AMAQI
18th Jun 2026610 AMAQI
18th Jun 2026811 AMAQI
18th Jun 2026812 PMAQI
18th Jun 2026121 PMAQI
18th Jun 2026122 PMAQI
18th Jun 2026123 PMAQI
18th Jun 202684 PMAQI
18th Jun 202685 PMAQI
18th Jun 202666 PMAQI
18th Jun 2026147 PMAQI
18th Jun 2026128 PMAQI
18th Jun 2026239 PMAQI
18th Jun 20264410 PMAQI
18th Jun 20264911 PMAQI
19th Jun 20262712 AMAQI
19th Jun 2026171 AMAQI
19th Jun 202682 AMAQI
19th Jun 2026103 AMAQI
19th Jun 202684 AMAQI

26°C25/28°C

19th Jun 202645 AMAQI
19th Jun 2026126 AMAQI
19th Jun 202687 AMAQI
19th Jun 2026328 AMAQI
19th Jun 2026629 AMAQI
19th Jun 20266210 AMAQI
19th Jun 20264211 AMAQI
19th Jun 20264212 PMAQI
19th Jun 2026311 PMAQI
19th Jun 2026232 PMAQI
19th Jun 2026463 PMAQI
19th Jun 2026384 PMAQI
19th Jun 2026255 PMAQI
19th Jun 2026366 PMAQI
19th Jun 2026407 PMAQI
19th Jun 2026368 PMAQI
19th Jun 2026469 PMAQI
19th Jun 20265110 PMAQI
19th Jun 20265611 PMAQI
20th Jun 20266212 AMAQI
20th Jun 2026561 AMAQI
20th Jun 2026712 AMAQI
20th Jun 2026663 AMAQI
20th Jun 2026654 AMAQI

27°C25/29°C

20th Jun 2026605 AMAQI
20th Jun 2026596 AMAQI
20th Jun 2026547 AMAQI
20th Jun 2026588 AMAQI
20th Jun 2026709 AMAQI
20th Jun 20265810 AMAQI
20th Jun 20262511 AMAQI
20th Jun 20261612 PMAQI
20th Jun 2026291 PMAQI
20th Jun 2026162 PMAQI
20th Jun 2026273 PMAQI
20th Jun 2026144 PMAQI
20th Jun 2026235 PMAQI
20th Jun 2026166 PMAQI
20th Jun 202687 PMAQI
20th Jun 2026278 PMAQI
20th Jun 2026609 PMAQI
20th Jun 20266610 PMAQI
20th Jun 20268311 PMAQI
21st Jun 20267412 AMAQI
21st Jun 2026641 AMAQI
21st Jun 2026572 AMAQI
21st Jun 2026493 AMAQI
21st Jun 2026424 AMAQI

27°C25/29°C

21st Jun 2026385 AMAQI
21st Jun 2026406 AMAQI
21st Jun 2026507 AMAQI
21st Jun 2026498 AMAQI
21st Jun 2026509 AMAQI
21st Jun 20262310 AMAQI
21st Jun 20261211 AMAQI
21st Jun 20261212 PMAQI
21st Jun 2026361 PMAQI
21st Jun 2026212 PMAQI
21st Jun 2026213 PMAQI
21st Jun 2026234 PMAQI
21st Jun 2026195 PMAQI
21st Jun 2026146 PMAQI
21st Jun 2026167 PMAQI
21st Jun 2026108 PMAQI
21st Jun 202669 PMAQI
21st Jun 2026410 PMAQI
21st Jun 20262211 PMAQI
22nd Jun 20261812 AMAQI
22nd Jun 2026211 AMAQI
22nd Jun 2026142 AMAQI
22nd Jun 2026103 AMAQI
22nd Jun 2026174 AMAQI

27°C25/28°C

22nd Jun 2026235 AMAQI
22nd Jun 202686 AMAQI
22nd Jun 2026107 AMAQI
22nd Jun 2026238 AMAQI
22nd Jun 2026149 AMAQI
22nd Jun 20261810 AMAQI
22nd Jun 20264811 AMAQI
22nd Jun 20265412 PMAQI
22nd Jun 2026101 PMAQI
22nd Jun 202682 PMAQI
22nd Jun 2026213 PMAQI
22nd Jun 2026214 PMAQI
22nd Jun 2026255 PMAQI
22nd Jun 2026106 PMAQI
22nd Jun 202687 PMAQI
22nd Jun 2026108 PMAQI
22nd Jun 202689 PMAQI
22nd Jun 20261010 PMAQI
22nd Jun 20261211 PMAQI
23rd Jun 20263112 AMAQI
23rd Jun 2026381 AMAQI
23rd Jun 2026122 AMAQI
23rd Jun 2026103 AMAQI
23rd Jun 2026544 AMAQI

26°C25/26°C

23rd Jun 2026315 AMAQI
23rd Jun 2026126 AMAQI
23rd Jun 2026427 AMAQI
23rd Jun 2026388 AMAQI
23rd Jun 2026349 AMAQI
23rd Jun 20263110 AMAQI
23rd Jun 20261711 AMAQI
23rd Jun 20261612 PMAQI
23rd Jun 2026181 PMAQI
23rd Jun 2026142 PMAQI
23rd Jun 2026163 PMAQI
23rd Jun 2026274 PMAQI
23rd Jun 2026195 PMAQI
23rd Jun 2026316 PMAQI
23rd Jun 2026317 PMAQI
23rd Jun 2026258 PMAQI
23rd Jun 2026199 PMAQI
23rd Jun 20261710 PMAQI
23rd Jun 20261611 PMAQI
24th Jun 20261012 AMAQI
24th Jun 202681 AMAQI
24th Jun 2026102 AMAQI
24th Jun 2026123 AMAQI
24th Jun 202684 AMAQI

27°C25/29°C

24th Jun 2026105 AMAQI
24th Jun 2026206 AMAQI
24th Jun 2026367 AMAQI
24th Jun 2026718 AMAQI
24th Jun 2026469 AMAQI
24th Jun 20261710 AMAQI
24th Jun 20261811 AMAQI
24th Jun 20261412 PMAQI
24th Jun 2026161 PMAQI
24th Jun 2026212 PMAQI
24th Jun 2026163 PMAQI
24th Jun 2026174 PMAQI
24th Jun 2026125 PMAQI
24th Jun 2026256 PMAQI
24th Jun 2026277 PMAQI
24th Jun 2026308 PMAQI
24th Jun 2026429 PMAQI
24th Jun 20262110 PMAQI
24th Jun 20261711 PMAQI
25th Jun 20261712 AMAQI
25th Jun 2026171 AMAQI
25th Jun 2026142 AMAQI
25th Jun 2026183 AMAQI
25th Jun 2026324 AMAQI

28°C26/30°C

25th Jun 2026225 AMAQI
25th Jun 2026366 AMAQI
25th Jun 2026277 AMAQI
25th Jun 2026428 AMAQI
25th Jun 2026419 AMAQI
25th Jun 20261910 AMAQI
25th Jun 20261411 AMAQI
25th Jun 20263212 PMAQI
25th Jun 2026211 PMAQI
25th Jun 2026172 PMAQI
25th Jun 2026193 PMAQI
25th Jun 2026234 PMAQI
25th Jun 2026185 PMAQI
25th Jun 2026276 PMAQI
25th Jun 2026167 PMAQI
25th Jun 2026168 PMAQI
25th Jun 202689 PMAQI
25th Jun 2026410 PMAQI
25th Jun 2026411 PMAQI
26th Jun 20261812 AMAQI
26th Jun 2026271 AMAQI
26th Jun 2026252 AMAQI
26th Jun 2026143 AMAQI
26th Jun 2026124 AMAQI

28°C27/30°C

26th Jun 2026125 AMAQI
26th Jun 2026146 AMAQI
26th Jun 2026257 AMAQI
26th Jun 2026258 AMAQI
26th Jun 2026389 AMAQI
26th Jun 20263610 AMAQI
26th Jun 20263111 AMAQI
26th Jun 20262312 PMAQI
26th Jun 2026401 PMAQI
26th Jun 2026382 PMAQI
26th Jun 2026563 PMAQI
26th Jun 2026574 PMAQI
26th Jun 2026585 PMAQI
26th Jun 2026536 PMAQI
26th Jun 2026317 PMAQI
26th Jun 2026388 PMAQI
26th Jun 2026449 PMAQI
26th Jun 20265310 PMAQI
26th Jun 20264611 PMAQI
27th Jun 20263012 AMAQI
27th Jun 2026251 AMAQI
27th Jun 2026362 AMAQI
27th Jun 2026443 AMAQI
27th Jun 2026424 AMAQI

27°C26/29°C

27th Jun 2026445 AMAQI
27th Jun 2026366 AMAQI
27th Jun 2026387 AMAQI
27th Jun 2026478 AMAQI
27th Jun 2026369 AMAQI
27th Jun 20263610 AMAQI
27th Jun 20263311 AMAQI
27th Jun 20264412 PMAQI
27th Jun 2026571 PMAQI
27th Jun 2026472 PMAQI
27th Jun 2026233 PMAQI
27th Jun 2026404 PMAQI
27th Jun 2026425 PMAQI
27th Jun 2026456 PMAQI
27th Jun 2026487 PMAQI
27th Jun 202688 PMAQI
27th Jun 2026109 PMAQI
27th Jun 2026610 PMAQI
27th Jun 20262511 PMAQI
28th Jun 20264612 AMAQI
28th Jun 2026421 AMAQI
28th Jun 2026232 AMAQI
28th Jun 202683 AMAQI
28th Jun 202644 AMAQI

27°C26/29°C

28th Jun 202685 AMAQI
28th Jun 202666 AMAQI
28th Jun 202687 AMAQI
28th Jun 202668 AMAQI
28th Jun 202649 AMAQI
28th Jun 2026610 AMAQI
28th Jun 2026611 AMAQI
28th Jun 20262912 PMAQI
28th Jun 2026421 PMAQI
28th Jun 2026822 PMAQI
28th Jun 2026743 PMAQI
28th Jun 2026164 PMAQI
28th Jun 2026285 PMAQI
28th Jun 2026546 PMAQI
28th Jun 2026847 PMAQI
28th Jun 202668 PMAQI
28th Jun 202669 PMAQI
28th Jun 20261810 PMAQI
28th Jun 20264411 PMAQI
29th Jun 20265512 AMAQI
29th Jun 2026531 AMAQI
29th Jun 2026462 AMAQI
29th Jun 2026273 AMAQI
29th Jun 202684 AMAQI

27°C26/28°C

29th Jun 202665 AMAQI
29th Jun 202686 AMAQI
29th Jun 2026127 AMAQI
29th Jun 202688 AMAQI
29th Jun 202669 AMAQI
29th Jun 20262010 AMAQI
29th Jun 20262711 AMAQI
29th Jun 20264212 PMAQI
29th Jun 2026441 PMAQI
29th Jun 2026642 PMAQI
29th Jun 2026363 PMAQI
29th Jun 2026344 PMAQI
29th Jun 2026385 PMAQI
29th Jun 2026466 PMAQI
29th Jun 2026627 PMAQI
29th Jun 2026388 PMAQI
29th Jun 202689 PMAQI
29th Jun 2026610 PMAQI
29th Jun 2026611 PMAQI
30th Jun 2026612 AMAQI
30th Jun 202681 AMAQI
30th Jun 202662 AMAQI
30th Jun 202663 AMAQI
30th Jun 2026164 AMAQI

27°C26/28°C

30th Jun 2026275 AMAQI
30th Jun 2026306 AMAQI
30th Jun 2026347 AMAQI
30th Jun 2026408 AMAQI
30th Jun 2026389 AMAQI
30th Jun 20264610 AMAQI
30th Jun 20265811 AMAQI
30th Jun 20265512 PMAQI
30th Jun 2026541 PMAQI
30th Jun 2026492 PMAQI
30th Jun 2026423 PMAQI
30th Jun 2026234 PMAQI
30th Jun 2026255 PMAQI
30th Jun 2026246 PMAQI
30th Jun 2026237 PMAQI
30th Jun 2026268 PMAQI
30th Jun 2026279 PMAQI
30th Jun 20261710 PMAQI
30th Jun 20262411 PMAQI
1st Jul 20262812 AMAQI
1st Jul 2026261 AMAQI
1st Jul 2026282 AMAQI
1st Jul 2026293 AMAQI
1st Jul 2026314 AMAQI

27°C26/29°C

1st Jul 2026455 AMAQI
1st Jul 2026446 AMAQI
1st Jul 2026467 AMAQI
1st Jul 202688 AMAQI
1st Jul 202669 AMAQI
1st Jul 20262310 AMAQI
1st Jul 20262311 AMAQI
1st Jul 2026412 PMAQI
1st Jul 2026101 PMAQI
1st Jul 2026182 PMAQI
1st Jul 2026513 PMAQI
1st Jul 2026384 PMAQI
1st Jul 2026345 PMAQI
1st Jul 2026296 PMAQI
1st Jul 2026347 PMAQI
1st Jul 2026298 PMAQI
1st Jul 2026259 PMAQI
1st Jul 20262310 PMAQI
1st Jul 20262311 PMAQI
2nd Jul 20262112 AMAQI
2nd Jul 2026191 AMAQI
2nd Jul 2026232 AMAQI
2nd Jul 2026213 AMAQI
2nd Jul 2026214 AMAQI

27°C26/29°C

2nd Jul 2026175 AMAQI
2nd Jul 2026196 AMAQI
2nd Jul 2026217 AMAQI
2nd Jul 2026318 AMAQI
2nd Jul 2026339 AMAQI
2nd Jul 20262310 AMAQI
2nd Jul 20263611 AMAQI
2nd Jul 20264012 PMAQI
2nd Jul 2026421 PMAQI
2nd Jul 2026232 PMAQI
2nd Jul 2026333 PMAQI
2nd Jul 2026344 PMAQI
2nd Jul 2026255 PMAQI
2nd Jul 2026306 PMAQI
2nd Jul 2026367 PMAQI
2nd Jul 2026348 PMAQI
2nd Jul 2026259 PMAQI
2nd Jul 20262710 PMAQI
2nd Jul 20262511 PMAQI
3rd Jul 20262112 AMAQI
3rd Jul 2026211 AMAQI
3rd Jul 2026212 AMAQI
3rd Jul 2026233 AMAQI
3rd Jul 2026194 AMAQI

27°C26/29°C

3rd Jul 2026215 AMAQI
3rd Jul 2026216 AMAQI
3rd Jul 2026277 AMAQI
3rd Jul 2026278 AMAQI
3rd Jul 2026239 AMAQI
3rd Jul 20262510 AMAQI
3rd Jul 20264011 AMAQI
3rd Jul 20262912 PMAQI
3rd Jul 2026441 PMAQI
3rd Jul 2026432 PMAQI
3rd Jul 2026403 PMAQI
3rd Jul 2026144 PMAQI
3rd Jul 2026145 PMAQI
3rd Jul 2026196 PMAQI
3rd Jul 2026177 PMAQI
3rd Jul 2026128 PMAQI
3rd Jul 2026109 PMAQI
3rd Jul 20261210 PMAQI
3rd Jul 20261411 PMAQI
4th Jul 20261212 AMAQI
4th Jul 2026121 AMAQI
4th Jul 2026142 AMAQI
4th Jul 2026103 AMAQI
4th Jul 2026144 AMAQI

27°C26/29°C

4th Jul 2026145 AMAQI
4th Jul 2026176 AMAQI
4th Jul 2026197 AMAQI
4th Jul 2026188 AMAQI
4th Jul 2026259 AMAQI
4th Jul 20261410 AMAQI
4th Jul 20262711 AMAQI
4th Jul 20262912 PMAQI
4th Jul 2026341 PMAQI
4th Jul 2026362 PMAQI
4th Jul 2026383 PMAQI
4th Jul 2026314 PMAQI
4th Jul 2026235 PMAQI
4th Jul 2026256 PMAQI
4th Jul 2026387 PMAQI
4th Jul 2026408 PMAQI
4th Jul 2026319 PMAQI
4th Jul 20264410 PMAQI
4th Jul 20265011 PMAQI
5th Jul 20264012 AMAQI
5th Jul 2026491 AMAQI
5th Jul 2026402 AMAQI
5th Jul 2026343 AMAQI
5th Jul 2026464 AMAQI

27°C26/28°C

5th Jul 2026175 AMAQI
5th Jul 2026126 AMAQI
5th Jul 2026107 AMAQI
5th Jul 2026128 AMAQI
5th Jul 2026239 AMAQI
5th Jul 20261710 AMAQI
5th Jul 20261211 AMAQI
5th Jul 20261412 PMAQI
5th Jul 2026231 PMAQI
5th Jul 2026202 PMAQI
5th Jul 2026143 PMAQI
5th Jul 2026284 PMAQI
5th Jul 2026255 PMAQI
5th Jul 2026186 PMAQI
5th Jul 202687 PMAQI
5th Jul 202668 PMAQI
5th Jul 202669 PMAQI
5th Jul 2026810 PMAQI
5th Jul 2026411 PMAQI
6th Jul 2026612 AMAQI
6th Jul 202661 AMAQI
6th Jul 202662 AMAQI
6th Jul 2026233 AMAQI
6th Jul 2026464 AMAQI

27°C25/29°C

6th Jul 2026585 AMAQI
6th Jul 2026686 AMAQI
6th Jul 2026727 AMAQI
6th Jul 2026758 AMAQI
6th Jul 2026629 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20264011 AMAQI
6th Jul 20262312 PMAQI
6th Jul 2026231 PMAQI
6th Jul 2026232 PMAQI
6th Jul 2026213 PMAQI
6th Jul 2026234 PMAQI
6th Jul 2026305 PMAQI
6th Jul 2026336 PMAQI
6th Jul 2026107 PMAQI
6th Jul 2026148 PMAQI
6th Jul 2026219 PMAQI
6th Jul 20261610 PMAQI
6th Jul 20263411 PMAQI
7th Jul 20263212 AMAQI
7th Jul 202681 AMAQI
7th Jul 202682 AMAQI
7th Jul 202663 AMAQI
7th Jul 202644 AMAQI

27°C26/30°C

7th Jul 202665 AMAQI
7th Jul 202666 AMAQI
7th Jul 2026147 AMAQI
7th Jul 2026298 AMAQI
7th Jul 2026169 AMAQI
7th Jul 2026410 AMAQI
7th Jul 2026811 AMAQI
7th Jul 2026412 PMAQI
7th Jul 2026201 PMAQI
7th Jul 2026102 PMAQI
7th Jul 202683 PMAQI
7th Jul 202684 PMAQI
7th Jul 202685 PMAQI
7th Jul 2026186 PMAQI
7th Jul 2026367 PMAQI
7th Jul 2026428 PMAQI
7th Jul 2026259 PMAQI
7th Jul 20262710 PMAQI
7th Jul 2026811 PMAQI
8th Jul 2026412 AMAQI
8th Jul 202641 AMAQI
8th Jul 202662 AMAQI
8th Jul 202643 AMAQI
8th Jul 202644 AMAQI

27°C26/29°C

8th Jul 2026425 AMAQI
8th Jul 2026246 AMAQI
8th Jul 2026167 AMAQI
8th Jul 2026468 AMAQI
8th Jul 2026409 AMAQI
8th Jul 20264010 AMAQI
8th Jul 20268211 AMAQI
8th Jul 20264912 PMAQI
8th Jul 2026971 PMAQI
8th Jul 2026802 PMAQI
8th Jul 2026563 PMAQI
8th Jul 2026684 PMAQI
8th Jul 2026885 PMAQI
8th Jul 2026446 PMAQI
8th Jul 2026447 PMAQI
8th Jul 2026388 PMAQI
8th Jul 2026279 PMAQI
8th Jul 20261910 PMAQI
8th Jul 20261411 PMAQI
9th Jul 20261212 AMAQI
9th Jul 2026121 AMAQI
9th Jul 2026122 AMAQI
9th Jul 2026103 AMAQI
9th Jul 2026104 AMAQI

28°C26/30°C

9th Jul 2026125 AMAQI
9th Jul 2026126 AMAQI
9th Jul 2026167 AMAQI
9th Jul 2026258 AMAQI
9th Jul 2026259 AMAQI
9th Jul 20262910 AMAQI
9th Jul 20262511 AMAQI
9th Jul 20263012 PMAQI
9th Jul 2026461 PMAQI
9th Jul 2026382 PMAQI
9th Jul 2026383 PMAQI
9th Jul 2026384 PMAQI
9th Jul 2026405 PMAQI
9th Jul 2026426 PMAQI
9th Jul 2026687 PMAQI
9th Jul 2026368 PMAQI
9th Jul 202649 PMAQI
9th Jul 20261810 PMAQI
9th Jul 20261811 PMAQI
10th Jul 2026412 AMAQI
10th Jul 2026341 AMAQI
10th Jul 2026242 AMAQI
10th Jul 2026433 AMAQI
10th Jul 2026424 AMAQI

27°C26/29°C

10th Jul 2026415 AMAQI
10th Jul 2026396 AMAQI
10th Jul 2026507 AMAQI
10th Jul 2026548 AMAQI
10th Jul 2026459 AMAQI
10th Jul 20263810 AMAQI
10th Jul 20261811 AMAQI
10th Jul 20264812 PMAQI
10th Jul 2026381 PMAQI
10th Jul 2026442 PMAQI
10th Jul 2026363 PMAQI
10th Jul 2026244 PMAQI
10th Jul 2026265 PMAQI
10th Jul 202646 PMAQI
10th Jul 2026237 PMAQI
10th Jul 202688 PMAQI
10th Jul 202649 PMAQI
10th Jul 20264010 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20263912 AMAQI
11th Jul 2026291 AMAQI
11th Jul 2026412 AMAQI
11th Jul 2026383 AMAQI
11th Jul 2026404 AMAQI

27°C26/29°C

11th Jul 2026445 AMAQI
11th Jul 2026426 AMAQI
11th Jul 2026377 AMAQI
11th Jul 2026448 AMAQI
11th Jul 2026259 AMAQI
11th Jul 2026810 AMAQI
11th Jul 20263811 AMAQI
11th Jul 20262512 PMAQI
11th Jul 202681 PMAQI
11th Jul 2026202 PMAQI
11th Jul 2026253 PMAQI
11th Jul 2026104 PMAQI
11th Jul 2026315 PMAQI
11th Jul 2026126 PMAQI
11th Jul 2026107 PMAQI
11th Jul 202668 PMAQI
11th Jul 2026229 PMAQI
11th Jul 20263410 PMAQI
11th Jul 20261411 PMAQI
12th Jul 20264212 AMAQI
12th Jul 2026421 AMAQI
12th Jul 2026442 AMAQI
12th Jul 2026323 AMAQI
12th Jul 2026384 AMAQI

27°C26/29°C

12th Jul 2026445 AMAQI
12th Jul 2026546 AMAQI
12th Jul 2026477 AMAQI
12th Jul 2026348 AMAQI
12th Jul 2026389 AMAQI
12th Jul 20265910 AMAQI
12th Jul 20265211 AMAQI
12th Jul 20265412 PMAQI
12th Jul 2026461 PMAQI
12th Jul 2026542 PMAQI
12th Jul 2026253 PMAQI
12th Jul 2026214 PMAQI
12th Jul 2026165 PMAQI
12th Jul 202666 PMAQI
12th Jul 202667 PMAQI
12th Jul 202688 PMAQI
12th Jul 202649 PMAQI
12th Jul 2026610 PMAQI
12th Jul 2026611 PMAQI
13th Jul 20261612 AMAQI
13th Jul 202681 AMAQI
13th Jul 202662 AMAQI
13th Jul 2026223 AMAQI
13th Jul 2026244 AMAQI

27°C26/29°C

13th Jul 2026235 AMAQI
13th Jul 2026216 AMAQI
13th Jul 2026217 AMAQI
13th Jul 2026218 AMAQI
13th Jul 2026529 AMAQI
13th Jul 20261210 AMAQI
13th Jul 20261811 AMAQI
13th Jul 20261812 PMAQI
13th Jul 2026251 PMAQI
13th Jul 2026262 PMAQI
13th Jul 2026603 PMAQI
13th Jul 2026534 PMAQI
13th Jul 2026385 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026347 PMAQI
13th Jul 2026528 PMAQI
13th Jul 2026559 PMAQI
13th Jul 20264810 PMAQI
13th Jul 20265311 PMAQI
14th Jul 20265012 AMAQI
14th Jul 2026501 AMAQI
14th Jul 2026512 AMAQI
14th Jul 2026503 AMAQI
14th Jul 2026504 AMAQI

27°C26/29°C

14th Jul 2026485 AMAQI
14th Jul 2026506 AMAQI
14th Jul 2026527 AMAQI
14th Jul 2026558 AMAQI
14th Jul 2026679 AMAQI
14th Jul 20265210 AMAQI
14th Jul 20265211 AMAQI
14th Jul 20264812 PMAQI
14th Jul 2026311 PMAQI
14th Jul 2026542 PMAQI
14th Jul 2026573 PMAQI
14th Jul 2026644 PMAQI
14th Jul 2026665 PMAQI
14th Jul 2026646 PMAQI
14th Jul 2026627 PMAQI
14th Jul 2026678 PMAQI
14th Jul 2026689 PMAQI
14th Jul 20266210 PMAQI
14th Jul 20265411 PMAQI
15th Jul 20265312 AMAQI
15th Jul 2026511 AMAQI
15th Jul 2026482 AMAQI
15th Jul 2026543 AMAQI
15th Jul 2026564 AMAQI

27°C26/29°C

15th Jul 2026565 AMAQI
15th Jul 2026606 AMAQI
15th Jul 2026707 AMAQI
15th Jul 2026528 AMAQI
15th Jul 2026509 AMAQI
15th Jul 20264410 AMAQI
15th Jul 20264611 AMAQI
15th Jul 20265212 PMAQI
15th Jul 2026601 PMAQI
15th Jul 2026572 PMAQI
15th Jul 2026583 PMAQI
15th Jul 2026564 PMAQI
15th Jul 2026555 PMAQI
15th Jul 2026446 PMAQI
15th Jul 2026547 PMAQI
15th Jul 2026488 PMAQI
15th Jul 2026689 PMAQI
15th Jul 20266410 PMAQI
15th Jul 20266411 PMAQI
16th Jul 20265712 AMAQI
16th Jul 2026681 AMAQI
16th Jul 2026742 AMAQI
16th Jul 2026623 AMAQI
16th Jul 2026644 AMAQI

27°C26/29°C

16th Jul 2026345 AMAQI
5 AM
16th Jul 2026526 AMAQI
16th Jul 2026627 AMAQI
16th Jul 2026658 AMAQI
16th Jul 2026519 AMAQI
16th Jul 20262710 AMAQI
16th Jul 2026811 AMAQI
11 AM
16th Jul 20261212 PMAQI
16th Jul 2026221 PMAQI
16th Jul 2026332 PMAQI
16th Jul 2026293 PMAQI
16th Jul 202684 PMAQI
16th Jul 2026255 PMAQI
16th Jul 2026166 PMAQI
6 PM
16th Jul 202687 PMAQI
16th Jul 2026128 PMAQI
16th Jul 2026129 PMAQI
16th Jul 20261710 PMAQI
16th Jul 20261411 PMAQI
11 PM
4 AM

27°C25/29°C

Day time
Avg. Highest Time
8 AM - 9 AM

37AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
5 AM

27AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 9 AM (Avg. 37), while the lowest AQI was between 5 AM to 5 AM (Avg. 27).
Night time
Avg. Highest Time
4 AM - 7 PM

30AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
9 PM

24AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 7 PM (Avg. 30), while the lowest AQI was between 9 PM to 9 PM (Avg. 24).

2026 Days Vs Air Quality

Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, Western, Sri Lanka

2026

44%

84

40%

77

17%

32

Total number of days with different AQI categories in last 197 days in 2026 (168 days remaining)

Good
84 Days
Moderate
77 Days
Poor
32 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 44%

Health Risk Level:

Significant

In 2026, 44% of 197 days were within WHO’s safe air quality limits, and 56% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights

Overseas School of Colombo Sensor 1, Sri Jayewardenepura Kotte, 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
76AQI (US)
2nd January 2026
63AQI (US)
3rd January 2026
72AQI (US)
4th January 2026
77AQI (US)
5th January 2026
75AQI (US)
6th January 2026
87AQI (US)
7th January 2026
105AQI (US)
8th January 2026
76AQI (US)
9th January 2026
58AQI (US)
10th January 2026
78AQI (US)
11th January 2026
78AQI (US)
12th January 2026
73AQI (US)
13th January 2026
61AQI (US)
14th January 2026
73AQI (US)
15th January 2026
80AQI (US)
16th January 2026
112AQI (US)
17th January 2026
131AQI (US)
18th January 2026
130AQI (US)
19th January 2026
108AQI (US)
20th January 2026
99AQI (US)
21st January 2026
94AQI (US)
22nd January 2026
86AQI (US)
23rd January 2026
81AQI (US)
24th January 2026
105AQI (US)
25th January 2026
79AQI (US)
26th January 2026
73AQI (US)
27th January 2026
86AQI (US)
28th January 2026
121AQI (US)
29th January 2026
114AQI (US)
30th January 2026
104AQI (US)
31st January 2026
83AQI (US)
1st February 2026
58AQI (US)
2nd February 2026
77AQI (US)
3rd February 2026
107AQI (US)
4th February 2026
100AQI (US)
5th February 2026
101AQI (US)
6th February 2026
87AQI (US)
7th February 2026
86AQI (US)
8th February 2026
121AQI (US)
9th February 2026
123AQI (US)
10th February 2026
110AQI (US)
11th February 2026
91AQI (US)
12th February 2026
108AQI (US)
13th February 2026
125AQI (US)
14th February 2026
102AQI (US)
15th February 2026
115AQI (US)
16th February 2026
119AQI (US)
17th February 2026
109AQI (US)
18th February 2026
98AQI (US)
19th February 2026
83AQI (US)
20th February 2026
78AQI (US)
21st February 2026
80AQI (US)
22nd February 2026
49AQI (US)
23rd February 2026
63AQI (US)
24th February 2026
61AQI (US)
25th February 2026
73AQI (US)
26th February 2026
86AQI (US)
27th February 2026
108AQI (US)
28th February 2026
116AQI (US)
1st March 2026
122AQI (US)
2nd March 2026
133AQI (US)
3rd March 2026
134AQI (US)
4th March 2026
133AQI (US)
5th March 2026
116AQI (US)
6th March 2026
100AQI (US)
7th March 2026
109AQI (US)
8th March 2026
120AQI (US)
9th March 2026
106AQI (US)
10th March 2026
127AQI (US)
11th March 2026
106AQI (US)
12th March 2026
83AQI (US)
13th March 2026
63AQI (US)
14th March 2026
79AQI (US)
15th March 2026
65AQI (US)
16th March 2026
61AQI (US)
17th March 2026
56AQI (US)
18th March 2026
50AQI (US)
19th March 2026
56AQI (US)
20th March 2026
51AQI (US)
21st March 2026
51AQI (US)
22nd March 2026
55AQI (US)
23rd March 2026
60AQI (US)
24th March 2026
59AQI (US)
25th March 2026
60AQI (US)
26th March 2026
70AQI (US)
27th March 2026
64AQI (US)
28th March 2026
69AQI (US)
29th March 2026
70AQI (US)
30th March 2026
68AQI (US)
31st March 2026
73AQI (US)
1st April 2026
63AQI (US)
2nd April 2026
69AQI (US)
3rd April 2026
56AQI (US)
4th April 2026
34AQI (US)
5th April 2026
38AQI (US)
6th April 2026
37AQI (US)
7th April 2026
39AQI (US)
8th April 2026
39AQI (US)
9th April 2026
39AQI (US)
10th April 2026
60AQI (US)
11th April 2026
56AQI (US)
12th April 2026
52AQI (US)
13th April 2026
52AQI (US)
14th April 2026
50AQI (US)
15th April 2026
26AQI (US)
16th April 2026
48AQI (US)
17th April 2026
18th April 2026
37AQI (US)
19th April 2026
26AQI (US)
20th April 2026
35AQI (US)
21st April 2026
24AQI (US)
22nd April 2026
23rd April 2026
29AQI (US)
24th April 2026
37AQI (US)
25th April 2026
20AQI (US)
26th April 2026
15AQI (US)
27th April 2026
35AQI (US)
28th April 2026
28AQI (US)
29th April 2026
31AQI (US)
30th April 2026
18AQI (US)
1st May 2026
45AQI (US)
2nd May 2026
46AQI (US)
3rd May 2026
56AQI (US)
4th May 2026
44AQI (US)
5th May 2026
22AQI (US)
6th May 2026
58AQI (US)
7th May 2026
50AQI (US)
8th May 2026
54AQI (US)
9th May 2026
10th May 2026
29AQI (US)
11th May 2026
48AQI (US)
12th May 2026
64AQI (US)
13th May 2026
60AQI (US)
14th May 2026
54AQI (US)
15th May 2026
38AQI (US)
16th May 2026
86AQI (US)
17th May 2026
80AQI (US)
18th May 2026
63AQI (US)
19th May 2026
45AQI (US)
20th May 2026
41AQI (US)
21st May 2026
50AQI (US)
22nd May 2026
51AQI (US)
23rd May 2026
45AQI (US)
24th May 2026
46AQI (US)
25th May 2026
55AQI (US)
26th May 2026
69AQI (US)
27th May 2026
44AQI (US)
28th May 2026
47AQI (US)
29th May 2026
47AQI (US)
30th May 2026
42AQI (US)
31st May 2026
50AQI (US)
1st June 2026
35AQI (US)
2nd June 2026
37AQI (US)
3rd June 2026
39AQI (US)
4th June 2026
28AQI (US)
5th June 2026
26AQI (US)
6th June 2026
24AQI (US)
7th June 2026
35AQI (US)
8th June 2026
20AQI (US)
9th June 2026
11AQI (US)
10th June 2026
26AQI (US)
11th June 2026
17AQI (US)
12th June 2026
25AQI (US)
13th June 2026
22AQI (US)
14th June 2026
32AQI (US)
15th June 2026
15AQI (US)
16th June 2026
8AQI (US)
17th June 2026
26AQI (US)
18th June 2026
13AQI (US)
19th June 2026
32AQI (US)
20th June 2026
45AQI (US)
21st June 2026
30AQI (US)
22nd June 2026
18AQI (US)
23rd June 2026
25AQI (US)
24th June 2026
22AQI (US)
25th June 2026
21AQI (US)
26th June 2026
34AQI (US)
27th June 2026
35AQI (US)
28th June 2026
27AQI (US)
29th June 2026
29AQI (US)
30th June 2026
29AQI (US)
1st July 2026
27AQI (US)
2nd July 2026
27AQI (US)
3rd July 2026
23AQI (US)
4th July 2026
26AQI (US)
5th July 2026
20AQI (US)
6th July 2026
32AQI (US)
7th July 2026
15AQI (US)
8th July 2026
39AQI (US)
9th July 2026
26AQI (US)
10th July 2026
31AQI (US)
11th July 2026
27AQI (US)
12th July 2026
32AQI (US)
13th July 2026
31AQI (US)
14th July 2026
55AQI (US)
15th July 2026
55AQI (US)
16th July 2026
17th July 2026
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
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)

83AQI (US)

39AQI (US)

51AQI (US)

26AQI (US)

31AQI (US)

No. of days

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

202661AQI (US)

22
9
1
14
13
1
20
10
21
7
18
12
30
13
2
84
77
32

Highest AQI (US) recorded in

February

94AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202571AQI (US)

24
7
19
8
1
23
8
30
3
28
6
24
12
19
31
4
26
6
25
5
22
3
24
7
36
295
33
1

Highest AQI (US) recorded in

February

97AQI (US)

Lowest AQI (US) recorded in

July

52AQI (US)

202464AQI (US)

12
4
1
1
4
8
4
26
31
14
14
3
6
7
2
28
31
31
161
4

Highest AQI (US) recorded in

January

90AQI (US)

Lowest AQI (US) recorded in

April

33AQI (US)

202335AQI (US)

17
14
22
5
1
17
12
2
27
3
31
11
1
2
3
27
1
129
63
4

Highest AQI (US) recorded in

December

70AQI (US)

Lowest AQI (US) recorded in

June

2AQI (US)

202250AQI (US)

2
1
1
17
8
5
16
11
3
35
20
9

Highest AQI (US) recorded in

October

56AQI (US)

Lowest AQI (US) recorded in

November

48AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2025(Avg.)
71AQI (US)
Least Polluted Year Recorded
2023(Avg.)
35AQI (US)

Overseas School of Colombo Sensor 1's annual 2026 AQI (US) (61) shows an average percentage change of 19.3% (worsened AQI (US)) compared to previous years: 2022 (50), 2023 (35), 2024 (64), 2025 (71).