Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Oiwacho, Toyohashi, Aichi, 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

Oiwacho, Toyohashi, Aichi, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Feb 2026
57AQI
Lowest AQI recorded on
13th Feb 2022
10AQI

Same Day Analysis (13th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 56 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 12th Feb - 13th Feb 2026

Oiwacho, Toyohashi, Aichi, Japan

AQI
Day
Night
.

6 AM12th Feb 2026

5 PM

5 AM13th Feb 2026

Day time
Avg. Highest Time
9AM12th Feb

57AQI

Avg. Lowest Time
3PM12th Feb

38AQI

Night time
Avg. Highest Time
2AM13th Feb

60AQI

Avg. Lowest Time
6PM12th Feb

49AQI

In the last 24 hours,

Oiwacho's AQI reached its highest point of 60 at 2 AM during the Night, while the lowest point, 38, was recorded at 3 PM during the Day between 12th Feb and 13th Feb 2026.

Day & Night AQI Trend : Jan - Feb 2026

Oiwacho, Toyohashi, Aichi, Japan

JanFeb
15th - 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 - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
15th Jan 2026216 AMAQI
15th Jan 2026217 AMAQI
15th Jan 2026198 AMAQI
15th Jan 2026199 AMAQI
15th Jan 20262110 AMAQI
15th Jan 20262111 AMAQI
15th Jan 20262112 PMAQI
15th Jan 2026311 PMAQI
15th Jan 2026312 PMAQI
15th Jan 2026333 PMAQI
15th Jan 2026424 PMAQI
15th Jan 2026495 PMAQI
15th Jan 2026516 PMAQI
15th Jan 2026637 PMAQI
15th Jan 2026628 PMAQI
15th Jan 2026709 PMAQI
15th Jan 20267010 PMAQI
15th Jan 20266811 PMAQI
16th Jan 20266712 AMAQI
16th Jan 2026631 AMAQI
16th Jan 2026662 AMAQI
16th Jan 2026623 AMAQI
16th Jan 2026654 AMAQI
16th Jan 2026575 AMAQI

7°C3/10°C

16th Jan 2026576 AMAQI
16th Jan 2026557 AMAQI
16th Jan 2026578 AMAQI
16th Jan 2026519 AMAQI
16th Jan 20265410 AMAQI
16th Jan 20265411 AMAQI
16th Jan 20265312 PMAQI
16th Jan 2026601 PMAQI
16th Jan 2026622 PMAQI
16th Jan 2026553 PMAQI
16th Jan 2026534 PMAQI
16th Jan 2026575 PMAQI
16th Jan 2026586 PMAQI
16th Jan 2026587 PMAQI
16th Jan 2026628 PMAQI
16th Jan 2026599 PMAQI
16th Jan 20265510 PMAQI
16th Jan 20265611 PMAQI
17th Jan 20265712 AMAQI
17th Jan 2026571 AMAQI
17th Jan 2026542 AMAQI
17th Jan 2026543 AMAQI
17th Jan 2026544 AMAQI
17th Jan 2026475 AMAQI

10°C7/14°C

17th Jan 2026486 AMAQI
17th Jan 2026547 AMAQI
17th Jan 2026518 AMAQI
17th Jan 2026529 AMAQI
17th Jan 20264910 AMAQI
17th Jan 20265111 AMAQI
17th Jan 20265412 PMAQI
17th Jan 2026561 PMAQI
17th Jan 2026562 PMAQI
17th Jan 2026583 PMAQI
17th Jan 2026574 PMAQI
17th Jan 2026545 PMAQI
17th Jan 2026556 PMAQI
17th Jan 2026537 PMAQI
17th Jan 2026548 PMAQI
17th Jan 2026549 PMAQI
17th Jan 20265610 PMAQI
17th Jan 20265711 PMAQI
18th Jan 20265712 AMAQI
18th Jan 2026551 AMAQI
18th Jan 2026442 AMAQI
18th Jan 2026423 AMAQI
18th Jan 2026524 AMAQI
18th Jan 2026565 AMAQI

10°C6/14°C

18th Jan 2026596 AMAQI
18th Jan 2026647 AMAQI
18th Jan 2026608 AMAQI
18th Jan 2026559 AMAQI
18th Jan 20265210 AMAQI
18th Jan 20264611 AMAQI
18th Jan 20264412 PMAQI
18th Jan 2026441 PMAQI
18th Jan 2026462 PMAQI
18th Jan 2026423 PMAQI
18th Jan 2026464 PMAQI
18th Jan 2026445 PMAQI
18th Jan 2026496 PMAQI
18th Jan 2026547 PMAQI
18th Jan 2026528 PMAQI
18th Jan 2026569 PMAQI
18th Jan 20266210 PMAQI
18th Jan 20267011 PMAQI
19th Jan 20267612 AMAQI
19th Jan 2026781 AMAQI
19th Jan 2026732 AMAQI
19th Jan 2026683 AMAQI
19th Jan 2026644 AMAQI
19th Jan 2026635 AMAQI

9°C5/13°C

19th Jan 2026566 AMAQI
19th Jan 2026477 AMAQI
19th Jan 2026408 AMAQI
19th Jan 2026449 AMAQI
19th Jan 20264610 AMAQI
19th Jan 20264611 AMAQI
19th Jan 20264812 PMAQI
19th Jan 2026511 PMAQI
19th Jan 2026502 PMAQI
19th Jan 2026443 PMAQI
19th Jan 2026484 PMAQI
19th Jan 2026515 PMAQI
19th Jan 2026546 PMAQI
19th Jan 2026517 PMAQI
19th Jan 2026528 PMAQI
19th Jan 2026649 PMAQI
19th Jan 20267210 PMAQI
19th Jan 20266811 PMAQI
20th Jan 20266612 AMAQI
20th Jan 2026641 AMAQI
20th Jan 2026602 AMAQI
20th Jan 2026723 AMAQI
20th Jan 2026784 AMAQI
20th Jan 2026665 AMAQI

10°C5/14°C

20th Jan 2026466 AMAQI
20th Jan 2026337 AMAQI
20th Jan 2026238 AMAQI
20th Jan 2026219 AMAQI
20th Jan 20261710 AMAQI
20th Jan 20261711 AMAQI
20th Jan 20261212 PMAQI
20th Jan 202681 PMAQI
20th Jan 202682 PMAQI
20th Jan 202683 PMAQI
20th Jan 2026104 PMAQI
20th Jan 202685 PMAQI
20th Jan 202686 PMAQI
20th Jan 2026147 PMAQI
20th Jan 2026148 PMAQI
20th Jan 2026149 PMAQI
20th Jan 20261710 PMAQI
20th Jan 20261711 PMAQI
21st Jan 20261212 AMAQI
21st Jan 2026121 AMAQI
21st Jan 2026172 AMAQI
21st Jan 2026143 AMAQI
21st Jan 2026174 AMAQI
21st Jan 2026145 AMAQI

8°C1/12°C

21st Jan 2026106 AMAQI
21st Jan 2026107 AMAQI
21st Jan 2026128 AMAQI
21st Jan 2026129 AMAQI
21st Jan 20261210 AMAQI
21st Jan 20261012 PMAQI
21st Jan 202681 PMAQI
21st Jan 202682 PMAQI
21st Jan 202683 PMAQI
21st Jan 2026104 PMAQI
21st Jan 2026165 PMAQI
21st Jan 2026166 PMAQI
21st Jan 2026127 PMAQI
21st Jan 2026148 PMAQI
21st Jan 2026149 PMAQI
21st Jan 20261410 PMAQI
21st Jan 20261911 PMAQI
22nd Jan 20261612 AMAQI
22nd Jan 2026121 AMAQI
22nd Jan 2026122 AMAQI
22nd Jan 2026163 AMAQI
22nd Jan 2026194 AMAQI
22nd Jan 2026195 AMAQI

3°C0/6°C

22nd Jan 2026316 AMAQI
22nd Jan 2026277 AMAQI
22nd Jan 2026278 AMAQI
22nd Jan 202689 AMAQI
22nd Jan 2026810 AMAQI
22nd Jan 20261011 AMAQI
22nd Jan 20261412 PMAQI
22nd Jan 2026191 PMAQI
22nd Jan 2026302 PMAQI
22nd Jan 2026603 PMAQI
22nd Jan 2026244 PMAQI
22nd Jan 2026305 PMAQI
22nd Jan 2026206 PMAQI
22nd Jan 2026147 PMAQI
22nd Jan 2026268 PMAQI
22nd Jan 2026409 PMAQI
22nd Jan 20262610 PMAQI
22nd Jan 20262611 PMAQI
23rd Jan 20261012 AMAQI
23rd Jan 2026121 AMAQI
23rd Jan 2026392 AMAQI
23rd Jan 2026263 AMAQI
23rd Jan 2026274 AMAQI
23rd Jan 2026515 AMAQI

3°C1/4°C

23rd Jan 2026366 AMAQI
23rd Jan 2026247 AMAQI
23rd Jan 2026268 AMAQI
23rd Jan 2026569 AMAQI
23rd Jan 20265610 AMAQI
23rd Jan 20263411 AMAQI
23rd Jan 20263712 PMAQI
23rd Jan 2026351 PMAQI
23rd Jan 2026362 PMAQI
23rd Jan 2026403 PMAQI
23rd Jan 2026284 PMAQI
23rd Jan 2026445 PMAQI
23rd Jan 2026546 PMAQI
23rd Jan 2026607 PMAQI
23rd Jan 2026448 PMAQI
23rd Jan 2026319 PMAQI
23rd Jan 20265010 PMAQI
23rd Jan 20263611 PMAQI
24th Jan 20263812 AMAQI
24th Jan 2026441 AMAQI
24th Jan 2026322 AMAQI
24th Jan 2026473 AMAQI
24th Jan 2026644 AMAQI
24th Jan 2026605 AMAQI

3°C0/6°C

24th Jan 2026366 AMAQI
24th Jan 2026367 AMAQI
24th Jan 2026368 AMAQI
24th Jan 2026569 AMAQI
24th Jan 20265210 AMAQI
24th Jan 20265211 AMAQI
24th Jan 20265112 PMAQI
24th Jan 2026511 PMAQI
24th Jan 2026622 PMAQI
24th Jan 2026643 PMAQI
24th Jan 2026524 PMAQI
24th Jan 2026475 PMAQI
24th Jan 2026586 PMAQI
24th Jan 2026687 PMAQI
24th Jan 2026628 PMAQI
24th Jan 2026509 PMAQI
24th Jan 20263610 PMAQI
24th Jan 20264211 PMAQI
25th Jan 20264812 AMAQI
25th Jan 2026401 AMAQI
25th Jan 2026292 AMAQI
25th Jan 2026273 AMAQI
25th Jan 2026194 AMAQI
25th Jan 2026145 AMAQI

5°C3/8°C

25th Jan 2026126 AMAQI
25th Jan 2026147 AMAQI
25th Jan 2026258 AMAQI
25th Jan 2026259 AMAQI
25th Jan 20262110 AMAQI
25th Jan 20262711 AMAQI
25th Jan 20262512 PMAQI
25th Jan 2026161 PMAQI
25th Jan 2026122 PMAQI
25th Jan 2026123 PMAQI
25th Jan 2026124 PMAQI
25th Jan 2026105 PMAQI
25th Jan 202686 PMAQI
25th Jan 202687 PMAQI
25th Jan 202688 PMAQI
25th Jan 202689 PMAQI
25th Jan 2026610 PMAQI
25th Jan 2026611 PMAQI
26th Jan 20261212 AMAQI
26th Jan 2026101 AMAQI
26th Jan 2026102 AMAQI
26th Jan 202683 AMAQI
26th Jan 202684 AMAQI
26th Jan 202685 AMAQI

3°C1/6°C

26th Jan 202666 AMAQI
26th Jan 202687 AMAQI
26th Jan 202688 AMAQI
26th Jan 202689 AMAQI
26th Jan 2026811 AMAQI
26th Jan 2026812 PMAQI
26th Jan 202681 PMAQI
26th Jan 202682 PMAQI
26th Jan 202683 PMAQI
26th Jan 2026104 PMAQI
26th Jan 2026145 PMAQI
26th Jan 2026126 PMAQI
26th Jan 2026127 PMAQI
26th Jan 2026298 PMAQI
26th Jan 2026259 PMAQI
26th Jan 20262310 PMAQI
26th Jan 20263511 PMAQI
27th Jan 20263812 AMAQI
27th Jan 2026501 AMAQI
27th Jan 2026422 AMAQI
27th Jan 2026493 AMAQI
27th Jan 2026244 AMAQI
27th Jan 2026345 AMAQI

3°C0/6°C

27th Jan 2026246 AMAQI
27th Jan 2026397 AMAQI
27th Jan 2026368 AMAQI
27th Jan 2026309 AMAQI
27th Jan 20264410 AMAQI
27th Jan 20263411 AMAQI
27th Jan 20263012 PMAQI
27th Jan 2026301 PMAQI
27th Jan 2026402 PMAQI
27th Jan 2026403 PMAQI
27th Jan 2026364 PMAQI
27th Jan 2026315 PMAQI
27th Jan 2026346 PMAQI
27th Jan 2026347 PMAQI
27th Jan 2026468 PMAQI
27th Jan 2026449 PMAQI
27th Jan 20264010 PMAQI
27th Jan 20263511 PMAQI
28th Jan 20264012 AMAQI
28th Jan 2026381 AMAQI
28th Jan 2026292 AMAQI
28th Jan 2026373 AMAQI
28th Jan 2026304 AMAQI
28th Jan 2026385 AMAQI

5°C2/10°C

28th Jan 2026336 AMAQI
28th Jan 2026327 AMAQI
28th Jan 2026308 AMAQI
28th Jan 2026429 AMAQI
28th Jan 20264810 AMAQI
28th Jan 20263011 AMAQI
28th Jan 20263412 PMAQI
28th Jan 202681 PMAQI
28th Jan 2026372 PMAQI
28th Jan 2026263 PMAQI
28th Jan 2026164 PMAQI
28th Jan 2026265 PMAQI
28th Jan 2026216 PMAQI
28th Jan 2026227 PMAQI
28th Jan 2026228 PMAQI
28th Jan 2026349 PMAQI
28th Jan 20262010 PMAQI
29th Jan 20262112 AMAQI
29th Jan 2026221 AMAQI
29th Jan 2026352 AMAQI
29th Jan 2026343 AMAQI
29th Jan 2026324 AMAQI
29th Jan 2026175 AMAQI

5°C3/8°C

29th Jan 2026256 AMAQI
29th Jan 2026347 AMAQI
29th Jan 2026248 AMAQI
29th Jan 2026289 AMAQI
29th Jan 20263010 AMAQI
29th Jan 20263011 AMAQI
29th Jan 20262812 PMAQI
29th Jan 2026281 PMAQI
29th Jan 2026262 PMAQI
29th Jan 2026103 PMAQI
29th Jan 2026104 PMAQI
29th Jan 2026205 PMAQI
29th Jan 2026266 PMAQI
29th Jan 2026267 PMAQI
29th Jan 2026298 PMAQI
29th Jan 2026289 PMAQI
29th Jan 20263010 PMAQI
29th Jan 20261011 PMAQI
30th Jan 20261212 AMAQI
30th Jan 2026451 AMAQI
30th Jan 2026542 AMAQI
30th Jan 2026383 AMAQI
30th Jan 2026664 AMAQI
30th Jan 2026805 AMAQI

4°C2/7°C

30th Jan 2026446 AMAQI
30th Jan 2026347 AMAQI
30th Jan 2026548 AMAQI
30th Jan 2026569 AMAQI
30th Jan 20265810 AMAQI
30th Jan 20265411 AMAQI
30th Jan 20261712 PMAQI
30th Jan 2026341 PMAQI
30th Jan 2026302 PMAQI
30th Jan 2026223 PMAQI
30th Jan 2026244 PMAQI
30th Jan 2026265 PMAQI
30th Jan 2026186 PMAQI
30th Jan 2026147 PMAQI
30th Jan 2026218 PMAQI
30th Jan 2026199 PMAQI
30th Jan 20261810 PMAQI
30th Jan 20262611 PMAQI
31st Jan 20262012 AMAQI
31st Jan 2026281 AMAQI
31st Jan 2026302 AMAQI
31st Jan 2026343 AMAQI
31st Jan 2026404 AMAQI
31st Jan 2026415 AMAQI

3°C1/6°C

31st Jan 2026526 AMAQI
31st Jan 2026387 AMAQI
31st Jan 2026328 AMAQI
31st Jan 2026639 AMAQI
31st Jan 20267910 AMAQI
31st Jan 20262011 AMAQI
31st Jan 20262212 PMAQI
31st Jan 202681 PMAQI
31st Jan 2026342 PMAQI
31st Jan 2026273 PMAQI
31st Jan 2026444 PMAQI
31st Jan 2026255 PMAQI
31st Jan 2026226 PMAQI
31st Jan 2026468 PMAQI
31st Jan 2026279 PMAQI
31st Jan 2026810 PMAQI
31st Jan 2026811 PMAQI
1st Feb 20261012 AMAQI
1st Feb 2026121 AMAQI
1st Feb 2026302 AMAQI
1st Feb 2026323 AMAQI
1st Feb 2026344 AMAQI
1st Feb 2026705 AMAQI

3°C1/7°C

1st Feb 2026396 AMAQI
1st Feb 2026497 AMAQI
1st Feb 2026308 AMAQI
1st Feb 2026629 AMAQI
1st Feb 20268010 AMAQI
1st Feb 20263311 AMAQI
1st Feb 2026812 PMAQI
1st Feb 2026301 PMAQI
1st Feb 2026322 PMAQI
1st Feb 2026363 PMAQI
1st Feb 2026214 PMAQI
1st Feb 2026255 PMAQI
1st Feb 2026296 PMAQI
1st Feb 2026287 PMAQI
1st Feb 2026368 PMAQI
1st Feb 2026299 PMAQI
1st Feb 20262410 PMAQI
1st Feb 20263911 PMAQI
2nd Feb 20264012 AMAQI
2nd Feb 2026261 AMAQI
2nd Feb 2026322 AMAQI
2nd Feb 2026403 AMAQI
2nd Feb 2026674 AMAQI
2nd Feb 2026715 AMAQI

5°C1/9°C

2nd Feb 2026446 AMAQI
2nd Feb 2026387 AMAQI
2nd Feb 2026288 AMAQI
2nd Feb 2026589 AMAQI
2nd Feb 20267810 AMAQI
2nd Feb 20265811 AMAQI
2nd Feb 20264412 PMAQI
2nd Feb 2026301 PMAQI
2nd Feb 2026162 PMAQI
2nd Feb 2026283 PMAQI
2nd Feb 2026444 PMAQI
2nd Feb 2026365 PMAQI
2nd Feb 2026426 PMAQI
2nd Feb 2026447 PMAQI
2nd Feb 2026458 PMAQI
2nd Feb 2026509 PMAQI
2nd Feb 20262510 PMAQI
2nd Feb 20264511 PMAQI
3rd Feb 20264212 AMAQI
3rd Feb 2026341 AMAQI
3rd Feb 2026282 AMAQI
3rd Feb 2026363 AMAQI
3rd Feb 2026494 AMAQI
3rd Feb 2026345 AMAQI

5°C2/9°C

3rd Feb 2026296 AMAQI
3rd Feb 2026387 AMAQI
3rd Feb 2026278 AMAQI
3rd Feb 2026259 AMAQI
3rd Feb 20265410 AMAQI
3rd Feb 20262111 AMAQI
3rd Feb 20262912 PMAQI
3rd Feb 2026101 PMAQI
3rd Feb 2026382 PMAQI
3rd Feb 2026173 PMAQI
3rd Feb 2026315 PMAQI
3rd Feb 2026296 PMAQI
3rd Feb 2026327 PMAQI
3rd Feb 2026368 PMAQI
3rd Feb 2026469 PMAQI
3rd Feb 20262510 PMAQI
3rd Feb 20262911 PMAQI
4th Feb 20262412 AMAQI
4th Feb 2026241 AMAQI
4th Feb 2026252 AMAQI
4th Feb 2026363 AMAQI
4th Feb 2026384 AMAQI
4th Feb 2026455 AMAQI

5°C3/9°C

4th Feb 2026286 AMAQI
4th Feb 2026367 AMAQI
4th Feb 2026418 AMAQI
4th Feb 2026429 AMAQI
4th Feb 20263910 AMAQI
4th Feb 20264411 AMAQI
4th Feb 20261912 PMAQI
4th Feb 2026211 PMAQI
4th Feb 2026302 PMAQI
4th Feb 2026423 PMAQI
4th Feb 2026424 PMAQI
4th Feb 2026445 PMAQI
4th Feb 2026326 PMAQI
4th Feb 2026327 PMAQI
4th Feb 2026428 PMAQI
4th Feb 2026399 PMAQI
4th Feb 20265210 PMAQI
4th Feb 20264411 PMAQI
5th Feb 20266612 AMAQI
5th Feb 2026641 AMAQI
5th Feb 2026542 AMAQI
5th Feb 2026533 AMAQI
5th Feb 2026544 AMAQI
5th Feb 2026535 AMAQI

6°C2/10°C

5th Feb 2026526 AMAQI
5th Feb 2026447 AMAQI
5th Feb 2026558 AMAQI
5th Feb 2026649 AMAQI
5th Feb 20265810 AMAQI
5th Feb 20265611 AMAQI
5th Feb 20265312 PMAQI
5th Feb 2026571 PMAQI
5th Feb 2026652 PMAQI
5th Feb 2026623 PMAQI
5th Feb 2026604 PMAQI
5th Feb 2026475 PMAQI
5th Feb 2026476 PMAQI
5th Feb 2026587 PMAQI
5th Feb 2026678 PMAQI
5th Feb 2026669 PMAQI
5th Feb 20265610 PMAQI
5th Feb 20265411 PMAQI
6th Feb 20265812 AMAQI
6th Feb 2026641 AMAQI
6th Feb 2026682 AMAQI
6th Feb 2026623 AMAQI
6th Feb 2026624 AMAQI
6th Feb 2026665 AMAQI

8°C5/12°C

6th Feb 2026656 AMAQI
6th Feb 2026727 AMAQI
6th Feb 2026708 AMAQI
6th Feb 2026709 AMAQI
6th Feb 20266610 AMAQI
6th Feb 20265811 AMAQI
6th Feb 2026621 PMAQI
6th Feb 2026622 PMAQI
6th Feb 2026603 PMAQI
6th Feb 2026584 PMAQI
6th Feb 2026545 PMAQI
6th Feb 2026516 PMAQI
6th Feb 2026467 PMAQI
6th Feb 2026388 PMAQI
6th Feb 2026299 PMAQI
6th Feb 20262910 PMAQI
6th Feb 20262511 PMAQI
7th Feb 20262112 AMAQI
7th Feb 2026231 AMAQI
7th Feb 2026212 AMAQI
7th Feb 2026163 AMAQI
7th Feb 2026124 AMAQI
7th Feb 2026125 AMAQI

9°C6/13°C

7th Feb 2026176 AMAQI
7th Feb 2026147 AMAQI
7th Feb 2026108 AMAQI
7th Feb 2026109 AMAQI
7th Feb 2026810 AMAQI
7th Feb 20261011 AMAQI
7th Feb 20261012 PMAQI
7th Feb 2026101 PMAQI
7th Feb 2026102 PMAQI
7th Feb 202683 PMAQI
7th Feb 202684 PMAQI
7th Feb 2026125 PMAQI
7th Feb 2026216 PMAQI
7th Feb 2026237 PMAQI
7th Feb 2026168 PMAQI
7th Feb 2026179 PMAQI
7th Feb 20262110 PMAQI
7th Feb 20262111 PMAQI
8th Feb 20262112 AMAQI
8th Feb 2026251 AMAQI
8th Feb 2026292 AMAQI
8th Feb 2026313 AMAQI
8th Feb 2026314 AMAQI
8th Feb 2026235 AMAQI

6°C3/8°C

8th Feb 2026146 AMAQI
8th Feb 2026148 AMAQI
8th Feb 2026109 AMAQI
8th Feb 20261010 AMAQI
8th Feb 20261011 AMAQI
8th Feb 20261012 PMAQI
8th Feb 2026101 PMAQI
8th Feb 2026122 PMAQI
8th Feb 2026123 PMAQI
8th Feb 2026104 PMAQI
8th Feb 2026125 PMAQI
8th Feb 2026146 PMAQI
8th Feb 2026147 PMAQI
8th Feb 2026178 PMAQI
8th Feb 2026149 PMAQI
8th Feb 20261210 PMAQI
8th Feb 20261011 PMAQI
9th Feb 2026812 AMAQI
9th Feb 2026371 AMAQI
9th Feb 2026252 AMAQI
9th Feb 2026103 AMAQI
9th Feb 2026504 AMAQI
9th Feb 2026445 AMAQI

3°C0/5°C

9th Feb 2026286 AMAQI
9th Feb 2026437 AMAQI
9th Feb 2026478 AMAQI
9th Feb 2026609 AMAQI
9th Feb 20268010 AMAQI
9th Feb 20262911 AMAQI
9th Feb 20262412 PMAQI
9th Feb 2026361 PMAQI
9th Feb 2026462 PMAQI
9th Feb 2026503 PMAQI
9th Feb 2026274 PMAQI
9th Feb 2026255 PMAQI
9th Feb 2026146 PMAQI
9th Feb 2026247 PMAQI
9th Feb 2026388 PMAQI
9th Feb 2026179 PMAQI
9th Feb 20261710 PMAQI
9th Feb 20262811 PMAQI
10th Feb 20264512 AMAQI
10th Feb 2026481 AMAQI
10th Feb 2026372 AMAQI
10th Feb 2026293 AMAQI
10th Feb 2026494 AMAQI
10th Feb 2026565 AMAQI

3°C-1/8°C

10th Feb 2026286 AMAQI
10th Feb 2026397 AMAQI
10th Feb 2026428 AMAQI
10th Feb 2026389 AMAQI
10th Feb 20265710 AMAQI
10th Feb 20261611 AMAQI
10th Feb 20263612 PMAQI
10th Feb 2026401 PMAQI
10th Feb 2026272 PMAQI
10th Feb 2026283 PMAQI
10th Feb 2026234 PMAQI
10th Feb 2026335 PMAQI
10th Feb 2026336 PMAQI
10th Feb 2026387 PMAQI
10th Feb 2026368 PMAQI
10th Feb 2026369 PMAQI
10th Feb 20264010 PMAQI
10th Feb 20264411 PMAQI
11th Feb 20266012 AMAQI
11th Feb 2026581 AMAQI
11th Feb 2026562 AMAQI
11th Feb 2026543 AMAQI
11th Feb 2026524 AMAQI
11th Feb 2026485 AMAQI

6°C1/9°C

11th Feb 2026506 AMAQI
11th Feb 2026507 AMAQI
11th Feb 2026558 AMAQI
11th Feb 2026569 AMAQI
11th Feb 20265710 AMAQI
11th Feb 20266011 AMAQI
11th Feb 20266312 PMAQI
11th Feb 2026651 PMAQI
11th Feb 2026642 PMAQI
11th Feb 2026633 PMAQI
11th Feb 2026584 PMAQI
11th Feb 2026405 PMAQI
11th Feb 2026236 PMAQI
11th Feb 2026147 PMAQI
11th Feb 2026178 PMAQI
11th Feb 2026149 PMAQI
11th Feb 20261210 PMAQI
11th Feb 20261411 PMAQI
12th Feb 20261912 AMAQI
12th Feb 2026251 AMAQI
12th Feb 2026362 AMAQI
12th Feb 2026383 AMAQI
12th Feb 2026424 AMAQI
12th Feb 2026465 AMAQI

7°C6/9°C

12th Feb 2026536 AMAQI
12th Feb 2026567 AMAQI
12th Feb 2026548 AMAQI
12th Feb 2026579 AMAQI
12th Feb 20265410 AMAQI
12th Feb 20265211 AMAQI
12th Feb 20264412 PMAQI
12th Feb 2026402 PMAQI
12th Feb 2026383 PMAQI
12th Feb 2026424 PMAQI
12th Feb 2026485 PMAQI
12th Feb 2026496 PMAQI
12th Feb 2026507 PMAQI
12th Feb 2026538 PMAQI
12th Feb 2026519 PMAQI
12th Feb 20265410 PMAQI
12th Feb 20265511 PMAQI
13th Feb 20265312 AMAQI
13th Feb 2026581 AMAQI
13th Feb 2026602 AMAQI
13th Feb 2026603 AMAQI
13th Feb 2026594 AMAQI
13th Feb 2026575 AMAQI

7°C4/11°C

13th Feb 2026606 AMAQI
6 AM
13th Feb 2026647 AMAQI
13th Feb 2026658 AMAQI
13th Feb 2026549 AMAQI
13th Feb 20264610 AMAQI
13th Feb 20265411 AMAQI
11 AM
13th Feb 20265712 PMAQI
13th Feb 2026621 PMAQI
13th Feb 2026582 PMAQI
13th Feb 2026573 PMAQI
13th Feb 2026624 PMAQI
13th Feb 2026565 PMAQI
5 PM
13th Feb 2026486 PMAQI
13th Feb 2026447 PMAQI
13th Feb 2026488 PMAQI
13th Feb 2026489 PMAQI
13th Feb 20265310 PMAQI
13th Feb 20265711 PMAQI
11 PM
5 AM

8°C4/12°C

Day time
Avg. Highest Time
10 AM

46AQI

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

31AQI

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. 46), while the lowest AQI was between 12 PM to 12 PM (Avg. 31).
Night time
Avg. Highest Time
4 AM - 5 AM

44AQI

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

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 5 AM (Avg. 44), while the lowest AQI was between 6 PM to 6 PM (Avg. 33).

2026 Days Vs Air Quality

Oiwacho, Toyohashi, Aichi, Japan

2026

84%

37

16%

7

Total number of days with different AQI categories in last 45 days in 2026 (320 days remaining)

Good
37 Days
Moderate
7 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2026, 84% of 45 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

Oiwacho, Toyohashi, Aichi, 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
19AQI (US)
2nd January 2026
14AQI (US)
3rd January 2026
15AQI (US)
4th January 2026
23AQI (US)
5th January 2026
47AQI (US)
6th January 2026
14AQI (US)
7th January 2026
25AQI (US)
8th January 2026
38AQI (US)
9th January 2026
12AQI (US)
10th January 2026
26AQI (US)
11th January 2026
28AQI (US)
12th January 2026
23AQI (US)
13th January 2026
38AQI (US)
14th January 2026
25AQI (US)
15th January 2026
35AQI (US)
16th January 2026
58AQI (US)
17th January 2026
54AQI (US)
18th January 2026
52AQI (US)
19th January 2026
56AQI (US)
20th January 2026
29AQI (US)
21st January 2026
13AQI (US)
22nd January 2026
22AQI (US)
23rd January 2026
37AQI (US)
24th January 2026
50AQI (US)
25th January 2026
18AQI (US)
26th January 2026
12AQI (US)
27th January 2026
37AQI (US)
28th January 2026
30AQI (US)
29th January 2026
25AQI (US)
30th January 2026
36AQI (US)
31st January 2026
33AQI (US)
1st February 2026
34AQI (US)
2nd February 2026
43AQI (US)
3rd February 2026
32AQI (US)
4th February 2026
36AQI (US)
5th February 2026
57AQI (US)
6th February 2026
56AQI (US)
7th February 2026
15AQI (US)
8th February 2026
16AQI (US)
9th February 2026
34AQI (US)
10th February 2026
37AQI (US)
11th February 2026
46AQI (US)
12th February 2026
46AQI (US)
13th February 2026
56AQI (US)
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

30AQI (US)

39AQI (US)

No. of days

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

202633AQI (US)

27
4
10
3
37
7

Highest AQI (US) recorded in

February

39AQI (US)

Lowest AQI (US) recorded in

January

30AQI (US)

202535AQI (US)

31
28
28
3
30
31
30
21
10
21
10
29
1
25
6
24
6
26
5
324
41

Highest AQI (US) recorded in

August

48AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202431AQI (US)

31
29
29
2
29
1
30
1
30
30
1
30
1
30
31
29
1
31
359
7

Highest AQI (US) recorded in

April

38AQI (US)

Lowest AQI (US) recorded in

February

24AQI (US)

202329AQI (US)

31
28
31
30
31
30
31
31
30
31
27
31
362

Highest AQI (US) recorded in

April

37AQI (US)

Lowest AQI (US) recorded in

August

21AQI (US)

202230AQI (US)

30
21
31
17
29
2
30
21
1
27
1
31
28
31
297
3

Highest AQI (US) recorded in

May

39AQI (US)

Lowest AQI (US) recorded in

October

24AQI (US)

202124AQI (US)

31
28
29
2
30
29
2
25
5
30
1
31
30
31
30
29
353
10

Highest AQI (US) recorded in

June

39AQI (US)

Lowest AQI (US) recorded in

January

10AQI (US)

202014AQI (US)

13
21
18
30
30
1
30
1
19
31
27
31
250
2

Highest AQI (US) recorded in

July

22AQI (US)

Lowest AQI (US) recorded in

September

8AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
35AQI (US)
Least Polluted Year Recorded
2020(Avg.)
14AQI (US)

Oiwacho's annual 2026 AQI (US) (33) shows an average percentage change of 31.9% (worsened AQI (US)) compared to previous years: 2020 (14), 2021 (24), 2022 (30), 2023 (29), 2024 (31), 2025 (35).