Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Seijo, Kamirenjaku, Tokyo, Japan 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+

February Air Quality Analysis

Seijo, Kamirenjaku, Tokyo, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
15th Feb 2022
61AQI
Lowest AQI recorded on
13th Feb 2022
11AQI

Same Day Analysis (9th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 32 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 8th Feb - 9th Feb 2026

Seijo, Kamirenjaku, Tokyo, Japan

AQI
Day
Night
.

6 AM8th Feb 2026

5 PM

5 AM9th Feb 2026

Day time
Avg. Highest Time
4PM8th Feb

23AQI

Avg. Lowest Time
8AM8th Feb

10AQI

Night time
Avg. Highest Time
4AM9th Feb

52AQI

Avg. Lowest Time
3AM9th Feb

8AQI

In the last 24 hours,

Seijo's AQI reached its highest point of 52 at 4 AM during the Night, while the lowest point, 8, was recorded at 3 AM during the Night between 8th Feb and 9th Feb 2026.

Day & Night AQI Trend : Jan - Feb 2026

Seijo, Kamirenjaku, Tokyo, Japan

JanFeb
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
11th Jan 2026406 AMAQI
11th Jan 2026298 AMAQI
11th Jan 2026489 AMAQI
11th Jan 20263810 AMAQI
11th Jan 20263311 AMAQI
11th Jan 20263612 PMAQI
11th Jan 2026481 PMAQI
11th Jan 2026422 PMAQI
11th Jan 2026443 PMAQI
11th Jan 2026404 PMAQI
11th Jan 2026385 PMAQI
11th Jan 2026316 PMAQI
11th Jan 2026257 PMAQI
11th Jan 2026218 PMAQI
11th Jan 2026219 PMAQI
11th Jan 20261410 PMAQI
11th Jan 2026811 PMAQI
12th Jan 20261012 AMAQI
12th Jan 2026121 AMAQI
12th Jan 2026122 AMAQI
12th Jan 202683 AMAQI
12th Jan 202684 AMAQI
12th Jan 202685 AMAQI

9°C3/12°C

12th Jan 2026126 AMAQI
12th Jan 2026107 AMAQI
12th Jan 2026108 AMAQI
12th Jan 2026109 AMAQI
12th Jan 20261210 AMAQI
12th Jan 20261211 AMAQI
12th Jan 20261812 PMAQI
12th Jan 2026271 PMAQI
12th Jan 2026252 PMAQI
12th Jan 2026233 PMAQI
12th Jan 2026174 PMAQI
12th Jan 2026195 PMAQI
12th Jan 2026166 PMAQI
12th Jan 2026147 PMAQI
12th Jan 2026218 PMAQI
12th Jan 2026259 PMAQI
12th Jan 20262510 PMAQI
12th Jan 20262111 PMAQI
13th Jan 20262712 AMAQI
13th Jan 2026231 AMAQI
13th Jan 2026252 AMAQI
13th Jan 2026293 AMAQI
13th Jan 2026314 AMAQI
13th Jan 2026295 AMAQI

5°C2/7°C

13th Jan 2026296 AMAQI
13th Jan 2026317 AMAQI
13th Jan 2026318 AMAQI
13th Jan 2026319 AMAQI
13th Jan 20263810 AMAQI
13th Jan 20264011 AMAQI
13th Jan 20264012 PMAQI
13th Jan 2026491 PMAQI
13th Jan 2026402 PMAQI
13th Jan 2026233 PMAQI
13th Jan 2026214 PMAQI
13th Jan 2026345 PMAQI
13th Jan 2026386 PMAQI
13th Jan 2026317 PMAQI
13th Jan 2026328 PMAQI
13th Jan 2026349 PMAQI
13th Jan 20263210 PMAQI
13th Jan 20262711 PMAQI
14th Jan 20263612 AMAQI
14th Jan 2026381 AMAQI
14th Jan 2026382 AMAQI
14th Jan 2026343 AMAQI
14th Jan 2026274 AMAQI
14th Jan 2026215 AMAQI

9°C4/14°C

14th Jan 2026176 AMAQI
14th Jan 2026177 AMAQI
14th Jan 2026168 AMAQI
14th Jan 2026169 AMAQI
14th Jan 20262310 AMAQI
14th Jan 20262111 AMAQI
14th Jan 20261912 PMAQI
14th Jan 2026211 PMAQI
14th Jan 2026212 PMAQI
14th Jan 2026193 PMAQI
14th Jan 2026174 PMAQI
14th Jan 2026185 PMAQI
14th Jan 2026216 PMAQI
14th Jan 2026217 PMAQI
14th Jan 2026238 PMAQI
14th Jan 2026279 PMAQI
14th Jan 20262110 PMAQI
14th Jan 20262111 PMAQI
15th Jan 20261912 AMAQI
15th Jan 2026141 AMAQI
15th Jan 2026212 AMAQI
15th Jan 2026193 AMAQI
15th Jan 2026234 AMAQI
15th Jan 2026295 AMAQI

8°C5/10°C

15th Jan 2026276 AMAQI
15th Jan 2026297 AMAQI
15th Jan 2026338 AMAQI
15th Jan 2026389 AMAQI
15th Jan 20264010 AMAQI
15th Jan 20264011 AMAQI
15th Jan 20264212 PMAQI
15th Jan 2026501 PMAQI
15th Jan 2026502 PMAQI
15th Jan 2026403 PMAQI
15th Jan 2026364 PMAQI
15th Jan 2026275 PMAQI
15th Jan 2026346 PMAQI
15th Jan 2026407 PMAQI
15th Jan 2026448 PMAQI
15th Jan 2026469 PMAQI
15th Jan 20265410 PMAQI
15th Jan 20265311 PMAQI
16th Jan 20265212 AMAQI
16th Jan 2026541 AMAQI
16th Jan 2026552 AMAQI
16th Jan 2026553 AMAQI
16th Jan 2026524 AMAQI
16th Jan 2026515 AMAQI

8°C5/11°C

16th Jan 2026526 AMAQI
16th Jan 2026547 AMAQI
16th Jan 2026578 AMAQI
16th Jan 2026629 AMAQI
16th Jan 20266410 AMAQI
16th Jan 20265611 AMAQI
16th Jan 20264212 PMAQI
16th Jan 2026331 PMAQI
16th Jan 2026482 PMAQI
16th Jan 2026463 PMAQI
16th Jan 2026334 PMAQI
16th Jan 2026335 PMAQI
16th Jan 2026326 PMAQI
16th Jan 2026297 PMAQI
16th Jan 2026298 PMAQI
16th Jan 2026319 PMAQI
16th Jan 20264210 PMAQI
16th Jan 20264611 PMAQI
17th Jan 20264412 AMAQI
17th Jan 2026421 AMAQI
17th Jan 2026422 AMAQI
17th Jan 2026403 AMAQI
17th Jan 2026384 AMAQI
17th Jan 2026365 AMAQI

11°C7/15°C

17th Jan 2026406 AMAQI
17th Jan 2026427 AMAQI
17th Jan 2026428 AMAQI
17th Jan 2026469 AMAQI
17th Jan 20264810 AMAQI
17th Jan 20265111 AMAQI
17th Jan 20265412 PMAQI
17th Jan 2026501 PMAQI
17th Jan 2026442 PMAQI
17th Jan 2026463 PMAQI
17th Jan 2026534 PMAQI
17th Jan 2026545 PMAQI
17th Jan 2026576 PMAQI
17th Jan 2026557 PMAQI
17th Jan 2026588 PMAQI
17th Jan 2026629 PMAQI
17th Jan 20265910 PMAQI
17th Jan 20266211 PMAQI
18th Jan 20266412 AMAQI
18th Jan 2026501 AMAQI
18th Jan 2026232 AMAQI
18th Jan 2026173 AMAQI
18th Jan 2026124 AMAQI
18th Jan 202685 AMAQI

10°C7/13°C

18th Jan 202686 AMAQI
18th Jan 202687 AMAQI
18th Jan 2026108 AMAQI
18th Jan 2026169 AMAQI
18th Jan 20261910 AMAQI
18th Jan 20262311 AMAQI
18th Jan 20262512 PMAQI
18th Jan 2026141 PMAQI
18th Jan 2026192 PMAQI
18th Jan 2026233 PMAQI
18th Jan 2026314 PMAQI
18th Jan 2026405 PMAQI
18th Jan 2026446 PMAQI
18th Jan 2026517 PMAQI
18th Jan 2026518 PMAQI
18th Jan 2026409 PMAQI
18th Jan 20262710 PMAQI
18th Jan 20262511 PMAQI
19th Jan 20262512 AMAQI
19th Jan 2026271 AMAQI
19th Jan 2026362 AMAQI
19th Jan 2026363 AMAQI
19th Jan 2026364 AMAQI
19th Jan 2026335 AMAQI

8°C6/10°C

19th Jan 2026336 AMAQI
19th Jan 2026367 AMAQI
19th Jan 2026388 AMAQI
19th Jan 2026409 AMAQI
19th Jan 20264010 AMAQI
19th Jan 20263811 AMAQI
19th Jan 20263112 PMAQI
19th Jan 2026361 PMAQI
19th Jan 2026322 PMAQI
19th Jan 2026293 PMAQI
19th Jan 2026424 PMAQI
19th Jan 2026525 PMAQI
19th Jan 2026526 PMAQI
19th Jan 2026557 PMAQI
19th Jan 2026538 PMAQI
19th Jan 2026589 PMAQI
19th Jan 20266410 PMAQI
19th Jan 20266711 PMAQI
20th Jan 20266712 AMAQI
20th Jan 2026661 AMAQI
20th Jan 2026712 AMAQI
20th Jan 2026733 AMAQI
20th Jan 2026684 AMAQI
20th Jan 2026685 AMAQI

8°C6/10°C

20th Jan 2026666 AMAQI
20th Jan 2026527 AMAQI
20th Jan 2026348 AMAQI
20th Jan 2026239 AMAQI
20th Jan 20262110 AMAQI
20th Jan 20261911 AMAQI
20th Jan 20261612 PMAQI
20th Jan 2026231 PMAQI
20th Jan 2026252 PMAQI
20th Jan 2026293 PMAQI
20th Jan 2026294 PMAQI
20th Jan 2026275 PMAQI
20th Jan 2026276 PMAQI
20th Jan 2026277 PMAQI
20th Jan 2026258 PMAQI
20th Jan 2026239 PMAQI
20th Jan 20262310 PMAQI
20th Jan 20262111 PMAQI
21st Jan 20262312 AMAQI
21st Jan 2026161 AMAQI
21st Jan 2026122 AMAQI
21st Jan 2026123 AMAQI
21st Jan 2026124 AMAQI
21st Jan 2026105 AMAQI

7°C2/12°C

21st Jan 2026106 AMAQI
21st Jan 2026127 AMAQI
21st Jan 2026108 AMAQI
21st Jan 2026129 AMAQI
21st Jan 20261210 AMAQI
21st Jan 2026812 PMAQI
21st Jan 202681 PMAQI
21st Jan 202682 PMAQI
21st Jan 202683 PMAQI
21st Jan 202684 PMAQI
21st Jan 2026105 PMAQI
21st Jan 2026166 PMAQI
21st Jan 2026277 PMAQI
21st Jan 2026278 PMAQI
21st Jan 2026299 PMAQI
21st Jan 20262510 PMAQI
21st Jan 20262311 PMAQI
22nd Jan 20262112 AMAQI
22nd Jan 2026251 AMAQI
22nd Jan 2026252 AMAQI
22nd Jan 2026193 AMAQI
22nd Jan 2026174 AMAQI
22nd Jan 2026145 AMAQI

3°C2/5°C

22nd Jan 2026286 AMAQI
22nd Jan 2026337 AMAQI
22nd Jan 2026258 AMAQI
22nd Jan 2026179 AMAQI
22nd Jan 20261710 AMAQI
22nd Jan 20261211 AMAQI
22nd Jan 20261012 PMAQI
22nd Jan 2026141 PMAQI
22nd Jan 2026102 PMAQI
22nd Jan 2026103 PMAQI
22nd Jan 2026124 PMAQI
22nd Jan 2026245 PMAQI
22nd Jan 2026226 PMAQI
22nd Jan 202687 PMAQI
22nd Jan 2026278 PMAQI
22nd Jan 2026419 PMAQI
22nd Jan 20262610 PMAQI
22nd Jan 20262411 PMAQI
23rd Jan 20261412 AMAQI
23rd Jan 2026261 AMAQI
23rd Jan 2026412 AMAQI
23rd Jan 2026303 AMAQI
23rd Jan 2026304 AMAQI
23rd Jan 2026445 AMAQI

3°C1/6°C

23rd Jan 2026346 AMAQI
23rd Jan 2026297 AMAQI
23rd Jan 2026368 AMAQI
23rd Jan 2026549 AMAQI
23rd Jan 20265610 AMAQI
23rd Jan 20264011 AMAQI
23rd Jan 20264412 PMAQI
23rd Jan 2026301 PMAQI
23rd Jan 2026122 PMAQI
23rd Jan 2026403 PMAQI
23rd Jan 2026244 PMAQI
23rd Jan 2026455 PMAQI
23rd Jan 2026526 PMAQI
23rd Jan 2026627 PMAQI
23rd Jan 2026428 PMAQI
23rd Jan 2026329 PMAQI
23rd Jan 20265010 PMAQI
23rd Jan 20264611 PMAQI
24th Jan 20264012 AMAQI
24th Jan 2026501 AMAQI
24th Jan 2026502 AMAQI
24th Jan 2026483 AMAQI
24th Jan 2026674 AMAQI
24th Jan 2026645 AMAQI

4°C1/7°C

24th Jan 2026306 AMAQI
24th Jan 2026297 AMAQI
24th Jan 2026338 AMAQI
24th Jan 2026499 AMAQI
24th Jan 20265410 AMAQI
24th Jan 20264011 AMAQI
24th Jan 20261212 PMAQI
24th Jan 2026221 PMAQI
24th Jan 2026312 PMAQI
24th Jan 2026563 PMAQI
24th Jan 2026264 PMAQI
24th Jan 2026255 PMAQI
24th Jan 2026246 PMAQI
24th Jan 2026427 PMAQI
24th Jan 2026428 PMAQI
24th Jan 2026349 PMAQI
24th Jan 20265610 PMAQI
24th Jan 20264211 PMAQI
25th Jan 20263712 AMAQI
25th Jan 2026481 AMAQI
25th Jan 2026852 AMAQI
25th Jan 2026543 AMAQI
25th Jan 2026444 AMAQI
25th Jan 2026625 AMAQI

6°C3/10°C

25th Jan 2026316 AMAQI
25th Jan 2026247 AMAQI
25th Jan 2026208 AMAQI
25th Jan 2026459 AMAQI
25th Jan 20265810 AMAQI
25th Jan 20264811 AMAQI
25th Jan 20266012 PMAQI
25th Jan 2026581 PMAQI
25th Jan 2026712 PMAQI
25th Jan 2026723 PMAQI
25th Jan 2026344 PMAQI
25th Jan 2026405 PMAQI
25th Jan 2026216 PMAQI
25th Jan 2026287 PMAQI
25th Jan 2026508 PMAQI
25th Jan 2026409 PMAQI
25th Jan 20263310 PMAQI
25th Jan 20262911 PMAQI
26th Jan 20262912 AMAQI
26th Jan 2026301 AMAQI
26th Jan 2026382 AMAQI
26th Jan 2026293 AMAQI
26th Jan 2026274 AMAQI
26th Jan 2026545 AMAQI

4°C2/7°C

26th Jan 2026206 AMAQI
26th Jan 2026107 AMAQI
26th Jan 2026208 AMAQI
26th Jan 2026279 AMAQI
26th Jan 2026811 AMAQI
26th Jan 20263812 PMAQI
26th Jan 2026361 PMAQI
26th Jan 202682 PMAQI
26th Jan 202683 PMAQI
26th Jan 202684 PMAQI
26th Jan 202685 PMAQI
26th Jan 2026326 PMAQI
26th Jan 2026367 PMAQI
26th Jan 2026328 PMAQI
26th Jan 2026349 PMAQI
26th Jan 20266710 PMAQI
26th Jan 20266311 PMAQI
27th Jan 20264012 AMAQI
27th Jan 2026481 AMAQI
27th Jan 2026422 AMAQI
27th Jan 2026503 AMAQI
27th Jan 2026284 AMAQI
27th Jan 2026365 AMAQI

4°C1/7°C

27th Jan 2026296 AMAQI
27th Jan 2026417 AMAQI
27th Jan 2026348 AMAQI
27th Jan 2026409 AMAQI
27th Jan 20264410 AMAQI
27th Jan 20263211 AMAQI
27th Jan 20262812 PMAQI
27th Jan 2026221 PMAQI
27th Jan 2026382 PMAQI
27th Jan 2026463 PMAQI
27th Jan 2026494 PMAQI
27th Jan 2026445 PMAQI
27th Jan 2026386 PMAQI
27th Jan 2026287 PMAQI
27th Jan 2026368 PMAQI
27th Jan 2026479 PMAQI
27th Jan 20265410 PMAQI
27th Jan 20265611 PMAQI
28th Jan 20263412 AMAQI
28th Jan 2026121 AMAQI
28th Jan 202682 AMAQI
28th Jan 2026103 AMAQI
28th Jan 2026124 AMAQI
28th Jan 2026105 AMAQI

6°C3/8°C

28th Jan 2026146 AMAQI
28th Jan 2026127 AMAQI
28th Jan 2026108 AMAQI
28th Jan 202689 AMAQI
28th Jan 20261210 AMAQI
28th Jan 2026811 AMAQI
28th Jan 2026812 PMAQI
28th Jan 2026121 PMAQI
28th Jan 2026142 PMAQI
28th Jan 2026143 PMAQI
28th Jan 2026124 PMAQI
28th Jan 2026105 PMAQI
28th Jan 2026106 PMAQI
28th Jan 2026107 PMAQI
28th Jan 2026108 PMAQI
28th Jan 2026109 PMAQI
28th Jan 20261410 PMAQI
29th Jan 20261212 AMAQI
29th Jan 2026141 AMAQI
29th Jan 2026172 AMAQI
29th Jan 2026213 AMAQI
29th Jan 2026214 AMAQI
29th Jan 2026195 AMAQI

6°C4/8°C

29th Jan 2026196 AMAQI
29th Jan 2026217 AMAQI
29th Jan 2026218 AMAQI
29th Jan 2026239 AMAQI
29th Jan 20261910 AMAQI
29th Jan 20261711 AMAQI
29th Jan 20261212 PMAQI
29th Jan 2026121 PMAQI
29th Jan 2026142 PMAQI
29th Jan 2026193 PMAQI
29th Jan 2026194 PMAQI
29th Jan 2026235 PMAQI
29th Jan 2026236 PMAQI
29th Jan 2026257 PMAQI
29th Jan 2026238 PMAQI
29th Jan 2026149 PMAQI
29th Jan 20262610 PMAQI
29th Jan 20261411 PMAQI
30th Jan 20262112 AMAQI
30th Jan 2026361 AMAQI
30th Jan 2026572 AMAQI
30th Jan 2026403 AMAQI
30th Jan 2026624 AMAQI
30th Jan 2026905 AMAQI

5°C3/7°C

30th Jan 2026426 AMAQI
30th Jan 2026407 AMAQI
30th Jan 2026568 AMAQI
30th Jan 2026549 AMAQI
30th Jan 20265610 AMAQI
30th Jan 20264111 AMAQI
30th Jan 20261212 PMAQI
30th Jan 2026301 PMAQI
30th Jan 2026222 PMAQI
30th Jan 2026163 PMAQI
30th Jan 2026194 PMAQI
30th Jan 2026235 PMAQI
30th Jan 2026166 PMAQI
30th Jan 2026187 PMAQI
30th Jan 2026148 PMAQI
30th Jan 2026109 PMAQI
30th Jan 2026810 PMAQI
30th Jan 20262511 PMAQI
31st Jan 20261412 AMAQI
31st Jan 2026301 AMAQI
31st Jan 2026422 AMAQI
31st Jan 2026363 AMAQI
31st Jan 2026364 AMAQI
31st Jan 2026445 AMAQI

4°C2/7°C

31st Jan 2026546 AMAQI
31st Jan 2026447 AMAQI
31st Jan 2026428 AMAQI
31st Jan 2026629 AMAQI
31st Jan 20268210 AMAQI
31st Jan 20263211 AMAQI
31st Jan 20263612 PMAQI
31st Jan 202681 PMAQI
31st Jan 2026322 PMAQI
31st Jan 2026273 PMAQI
31st Jan 2026464 PMAQI
31st Jan 2026305 PMAQI
31st Jan 2026286 PMAQI
31st Jan 2026458 PMAQI
31st Jan 2026359 PMAQI
31st Jan 20261910 PMAQI
31st Jan 20261711 PMAQI
1st Feb 20261712 AMAQI
1st Feb 2026201 AMAQI
1st Feb 2026302 AMAQI
1st Feb 2026283 AMAQI
1st Feb 2026414 AMAQI
1st Feb 2026715 AMAQI

4°C2/7°C

1st Feb 2026406 AMAQI
1st Feb 2026537 AMAQI
1st Feb 2026428 AMAQI
1st Feb 2026629 AMAQI
1st Feb 20268010 AMAQI
1st Feb 20264611 AMAQI
1st Feb 20262112 PMAQI
1st Feb 2026281 PMAQI
1st Feb 2026252 PMAQI
1st Feb 2026323 PMAQI
1st Feb 2026234 PMAQI
1st Feb 2026235 PMAQI
1st Feb 2026236 PMAQI
1st Feb 2026287 PMAQI
1st Feb 2026388 PMAQI
1st Feb 2026409 PMAQI
1st Feb 20263410 PMAQI
1st Feb 20263611 PMAQI
2nd Feb 20264212 AMAQI
2nd Feb 2026361 AMAQI
2nd Feb 2026252 AMAQI
2nd Feb 2026203 AMAQI
2nd Feb 2026124 AMAQI
2nd Feb 2026105 AMAQI

6°C3/9°C

2nd Feb 2026386 AMAQI
2nd Feb 2026567 AMAQI
2nd Feb 2026268 AMAQI
2nd Feb 2026569 AMAQI
2nd Feb 20267310 AMAQI
2nd Feb 20266911 AMAQI
2nd Feb 20264312 PMAQI
2nd Feb 2026431 PMAQI
2nd Feb 2026242 PMAQI
2nd Feb 2026223 PMAQI
2nd Feb 2026464 PMAQI
2nd Feb 2026365 PMAQI
2nd Feb 2026386 PMAQI
2nd Feb 2026367 PMAQI
2nd Feb 2026428 PMAQI
2nd Feb 2026329 PMAQI
2nd Feb 20262910 PMAQI
2nd Feb 20264011 PMAQI
3rd Feb 20264012 AMAQI
3rd Feb 2026321 AMAQI
3rd Feb 2026182 AMAQI
3rd Feb 2026303 AMAQI
3rd Feb 2026444 AMAQI
3rd Feb 2026365 AMAQI

7°C4/9°C

3rd Feb 2026326 AMAQI
3rd Feb 2026347 AMAQI
3rd Feb 2026278 AMAQI
3rd Feb 2026309 AMAQI
3rd Feb 20265810 AMAQI
3rd Feb 20263211 AMAQI
3rd Feb 20262412 PMAQI
3rd Feb 2026101 PMAQI
3rd Feb 2026342 PMAQI
3rd Feb 2026163 PMAQI
3rd Feb 2026295 PMAQI
3rd Feb 2026246 PMAQI
3rd Feb 2026277 PMAQI
3rd Feb 2026368 PMAQI
3rd Feb 2026489 PMAQI
3rd Feb 20261010 PMAQI
3rd Feb 20262211 PMAQI
4th Feb 20262212 AMAQI
4th Feb 2026201 AMAQI
4th Feb 2026252 AMAQI
4th Feb 2026403 AMAQI
4th Feb 2026444 AMAQI
4th Feb 2026475 AMAQI

7°C4/10°C

4th Feb 2026386 AMAQI
4th Feb 2026417 AMAQI
4th Feb 2026488 AMAQI
4th Feb 2026489 AMAQI
4th Feb 20265410 AMAQI
4th Feb 20264611 AMAQI
4th Feb 20262012 PMAQI
4th Feb 2026141 PMAQI
4th Feb 2026212 PMAQI
4th Feb 2026343 PMAQI
4th Feb 2026234 PMAQI
4th Feb 2026325 PMAQI
4th Feb 2026366 PMAQI
4th Feb 2026467 PMAQI
4th Feb 2026518 PMAQI
4th Feb 2026549 PMAQI
4th Feb 20266010 PMAQI
4th Feb 20265711 PMAQI
5th Feb 20265812 AMAQI
5th Feb 2026491 AMAQI
5th Feb 2026512 AMAQI
5th Feb 2026483 AMAQI
5th Feb 2026484 AMAQI
5th Feb 2026425 AMAQI

7°C4/10°C

5th Feb 2026386 AMAQI
5th Feb 2026407 AMAQI
5th Feb 2026388 AMAQI
5th Feb 2026389 AMAQI
5th Feb 20264510 AMAQI
5th Feb 20265311 AMAQI
5th Feb 20265512 PMAQI
5th Feb 2026531 PMAQI
5th Feb 2026542 PMAQI
5th Feb 2026543 PMAQI
5th Feb 2026624 PMAQI
5th Feb 2026695 PMAQI
5th Feb 2026766 PMAQI
5th Feb 2026767 PMAQI
5th Feb 2026828 PMAQI
5th Feb 2026829 PMAQI
5th Feb 20268010 PMAQI
5th Feb 20267911 PMAQI
6th Feb 20267812 AMAQI
6th Feb 2026811 AMAQI
6th Feb 2026802 AMAQI
6th Feb 2026643 AMAQI
6th Feb 2026584 AMAQI
6th Feb 2026605 AMAQI

9°C6/11°C

6th Feb 2026606 AMAQI
6th Feb 2026587 AMAQI
6th Feb 2026548 AMAQI
6th Feb 2026569 AMAQI
6th Feb 20265610 AMAQI
6th Feb 20265211 AMAQI
6th Feb 2026571 PMAQI
6th Feb 2026502 PMAQI
6th Feb 2026403 PMAQI
6th Feb 2026404 PMAQI
6th Feb 2026585 PMAQI
6th Feb 2026646 PMAQI
6th Feb 2026507 PMAQI
6th Feb 2026288 PMAQI
6th Feb 2026199 PMAQI
6th Feb 20262110 PMAQI
6th Feb 20261911 PMAQI
7th Feb 20261412 AMAQI
7th Feb 2026121 AMAQI
7th Feb 2026102 AMAQI
7th Feb 2026103 AMAQI
7th Feb 202684 AMAQI
7th Feb 2026105 AMAQI

9°C7/13°C

7th Feb 2026106 AMAQI
7th Feb 202687 AMAQI
7th Feb 202688 AMAQI
7th Feb 202689 AMAQI
7th Feb 2026610 AMAQI
7th Feb 2026811 AMAQI
7th Feb 20261012 PMAQI
7th Feb 202681 PMAQI
7th Feb 202682 PMAQI
7th Feb 2026103 PMAQI
7th Feb 2026144 PMAQI
7th Feb 2026105 PMAQI
7th Feb 2026106 PMAQI
7th Feb 2026187 PMAQI
7th Feb 2026258 PMAQI
7th Feb 2026349 PMAQI
7th Feb 20263810 PMAQI
7th Feb 20262911 PMAQI
8th Feb 20262712 AMAQI
8th Feb 2026291 AMAQI
8th Feb 2026232 AMAQI
8th Feb 2026213 AMAQI
8th Feb 2026194 AMAQI
8th Feb 2026125 AMAQI

3°C1/4°C

8th Feb 2026106 AMAQI
8th Feb 2026108 AMAQI
8th Feb 2026129 AMAQI
8th Feb 20261410 AMAQI
8th Feb 20261211 AMAQI
8th Feb 20261212 PMAQI
8th Feb 2026121 PMAQI
8th Feb 2026122 PMAQI
8th Feb 2026173 PMAQI
8th Feb 2026234 PMAQI
8th Feb 2026215 PMAQI
8th Feb 2026196 PMAQI
8th Feb 2026167 PMAQI
8th Feb 2026128 PMAQI
8th Feb 2026109 PMAQI
8th Feb 20261010 PMAQI
8th Feb 20261011 PMAQI
9th Feb 2026812 AMAQI
9th Feb 2026181 AMAQI
9th Feb 2026242 AMAQI
9th Feb 202683 AMAQI
9th Feb 2026524 AMAQI
9th Feb 2026445 AMAQI

0°C-1/1°C

9th Feb 2026266 AMAQI
6 AM
9th Feb 2026417 AMAQI
9th Feb 2026468 AMAQI
9th Feb 2026569 AMAQI
9th Feb 20267910 AMAQI
9th Feb 20262711 AMAQI
11 AM
9th Feb 20262212 PMAQI
9th Feb 2026361 PMAQI
9th Feb 2026452 PMAQI
9th Feb 2026463 PMAQI
9th Feb 2026414 PMAQI
9th Feb 2026245 PMAQI
5 PM
9th Feb 2026166 PMAQI
9th Feb 2026327 PMAQI
9th Feb 2026368 PMAQI
9th Feb 2026149 PMAQI
9th Feb 20261210 PMAQI
9th Feb 20262711 PMAQI
11 PM
5 AM

2°C-1/6°C

Day time
Avg. Highest Time
10 AM

42AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 PM

28AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 42), while the lowest AQI was between 12 PM to 12 PM (Avg. 28).
Night time
Avg. Highest Time
5 AM

36AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
6 PM

31AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 36), while the lowest AQI was between 6 PM to 6 PM (Avg. 31).

2026 Days Vs Air Quality

Seijo, Kamirenjaku, Tokyo, Japan

2026

95%

38

5%

2

Total number of days with different AQI categories in last 41 days in 2026 (324 days remaining)

Good
38 Days
Moderate
2 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 95%

Health Risk Level:

Very Low

In 2026, 95% of 41 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Seijo, Kamirenjaku, Tokyo, Japan

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
24AQI (US)
2nd January 2026
16AQI (US)
3rd January 2026
13AQI (US)
4th January 2026
23AQI (US)
5th January 2026
37AQI (US)
6th January 2026
10AQI (US)
7th January 2026
25AQI (US)
8th January 2026
33AQI (US)
9th January 2026
16AQI (US)
10th January 2026
33AQI (US)
11th January 2026
31AQI (US)
12th January 2026
16AQI (US)
13th January 2026
32AQI (US)
14th January 2026
23AQI (US)
15th January 2026
35AQI (US)
16th January 2026
46AQI (US)
17th January 2026
49AQI (US)
18th January 2026
27AQI (US)
19th January 2026
41AQI (US)
20th January 2026
38AQI (US)
21st January 2026
15AQI (US)
22nd January 2026
20AQI (US)
23rd January 2026
38AQI (US)
24th January 2026
40AQI (US)
25th January 2026
46AQI (US)
26th January 2026
29AQI (US)
27th January 2026
40AQI (US)
28th January 2026
12AQI (US)
29th January 2026
19AQI (US)
30th January 2026
34AQI (US)
31st January 2026
37AQI (US)
1st February 2026
37AQI (US)
2nd February 2026
37AQI (US)
3rd February 2026
30AQI (US)
4th February 2026
38AQI (US)
5th February 2026
57AQI (US)
6th February 2026
52AQI (US)
7th February 2026
13AQI (US)
8th February 2026
16AQI (US)
9th February 2026
32AQI (US)
10th February 2026
11th February 2026
12th February 2026
13th February 2026
14th February 2026
15th February 2026
16th February 2026
17th February 2026
18th February 2026
19th February 2026
20th February 2026
21st February 2026
22nd February 2026
23rd February 2026
24th February 2026
25th February 2026
26th February 2026
27th February 2026
28th February 2026
1st March 2026
2nd March 2026
3rd March 2026
4th March 2026
5th March 2026
6th March 2026
7th March 2026
8th March 2026
9th March 2026
10th March 2026
11th March 2026
12th March 2026
13th March 2026
14th March 2026
15th March 2026
16th March 2026
17th March 2026
18th March 2026
19th March 2026
20th March 2026
21st March 2026
22nd March 2026
23rd March 2026
24th March 2026
25th March 2026
26th March 2026
27th March 2026
28th March 2026
29th March 2026
30th March 2026
31st March 2026
1st April 2026
2nd April 2026
3rd April 2026
4th April 2026
5th April 2026
6th April 2026
7th April 2026
8th April 2026
9th April 2026
10th April 2026
11th April 2026
12th April 2026
13th April 2026
14th April 2026
15th April 2026
16th April 2026
17th April 2026
18th April 2026
19th April 2026
20th April 2026
21st April 2026
22nd April 2026
23rd April 2026
24th April 2026
25th April 2026
26th April 2026
27th April 2026
28th April 2026
29th April 2026
30th April 2026
1st May 2026
2nd May 2026
3rd May 2026
4th May 2026
5th May 2026
6th May 2026
7th May 2026
8th May 2026
9th May 2026
10th May 2026
11th May 2026
12th May 2026
13th May 2026
14th May 2026
15th May 2026
16th May 2026
17th May 2026
18th May 2026
19th May 2026
20th May 2026
21st May 2026
22nd May 2026
23rd May 2026
24th May 2026
25th May 2026
26th May 2026
27th May 2026
28th May 2026
29th May 2026
30th May 2026
31st May 2026
1st June 2026
2nd June 2026
3rd June 2026
4th June 2026
5th June 2026
6th June 2026
7th June 2026
8th June 2026
9th June 2026
10th June 2026
11th June 2026
12th June 2026
13th June 2026
14th June 2026
15th June 2026
16th June 2026
17th June 2026
18th June 2026
19th June 2026
20th June 2026
21st June 2026
22nd June 2026
23rd June 2026
24th June 2026
25th June 2026
26th June 2026
27th June 2026
28th June 2026
29th June 2026
30th June 2026
1st July 2026
2nd July 2026
3rd July 2026
4th July 2026
5th July 2026
6th July 2026
7th July 2026
8th July 2026
9th July 2026
10th July 2026
11th July 2026
12th July 2026
13th July 2026
14th July 2026
15th July 2026
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

29AQI (US)

35AQI (US)

No. of days

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

202630AQI (US)

31
7
2
38
2

Highest AQI (US) recorded in

February

35AQI (US)

Lowest AQI (US) recorded in

January

29AQI (US)

202534AQI (US)

31
28
29
2
30
31
30
24
7
21
10
29
1
22
9
20
10
20
11
315
50

Highest AQI (US) recorded in

August

46AQI (US)

Lowest AQI (US) recorded in

June

20AQI (US)

202432AQI (US)

31
29
31
28
2
30
1
26
4
26
5
31
28
2
31
30
31
352
14

Highest AQI (US) recorded in

July

40AQI (US)

Lowest AQI (US) recorded in

August

24AQI (US)

202332AQI (US)

31
28
26
5
25
5
28
3
27
3
26
5
31
30
31
29
31
343
21

Highest AQI (US) recorded in

April

43AQI (US)

Lowest AQI (US) recorded in

August

19AQI (US)

202230AQI (US)

31
21
1
31
27
2
30
1
28
2
20
1
1
28
31
29
1
30
1
307
9

Highest AQI (US) recorded in

April

36AQI (US)

Lowest AQI (US) recorded in

August

21AQI (US)

202123AQI (US)

30
1
28
30
1
30
30
1
28
2
31
28
3
30
30
1
30
31
356
9

Highest AQI (US) recorded in

June

34AQI (US)

Lowest AQI (US) recorded in

February

12AQI (US)

202016AQI (US)

13
21
18
30
31
31
19
31
29
1
31
254
1

Highest AQI (US) recorded in

August

24AQI (US)

Lowest AQI (US) recorded in

April

12AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
34AQI (US)
Least Polluted Year Recorded
2020(Avg.)
16AQI (US)

Seijo's annual 2026 AQI (US) (30) shows an average percentage change of 17.8% (worsened AQI (US)) compared to previous years: 2020 (16), 2021 (23), 2022 (30), 2023 (32), 2024 (32), 2025 (34).