Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Chiryu, 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+

October Air Quality Analysis

Chiryu, Aichi, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Oct 2024
72AQI
Lowest AQI recorded on
6th Oct 2022
18AQI

Same Day Analysis (2nd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 38 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.

Day & Night AQI Trend: 1st Oct - 2nd Oct 2026

Chiryu, Aichi, Japan

AQI
Day
Night
.

5 AM1st Oct 2026

5 PM

4 AM2nd Oct 2026

Day time
Avg. Highest Time
6AM1st Oct

36AQI

Avg. Lowest Time
12PM1st Oct

23AQI

Night time
Avg. Highest Time
12AM2nd Oct

44AQI

Avg. Lowest Time
7PM1st Oct

27AQI

In the last 24 hours,

Chiryu's AQI reached its highest point of 44 at 12 AM during the Night, while the lowest point, 23, was recorded at 12 PM during the Day between 1st Oct and 2nd Oct 2026.

Day & Night AQI Trend : Sep - Oct 2026

Chiryu, Aichi, Japan

SepOct
03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd
Day
Night
3rd Sep 2026225 AMAQI
3rd Sep 2026216 AMAQI
3rd Sep 2026247 AMAQI
3rd Sep 2026258 AMAQI
3rd Sep 2026239 AMAQI
3rd Sep 20262810 AMAQI
3rd Sep 20263211 AMAQI
3rd Sep 20263112 PMAQI
3rd Sep 2026261 PMAQI
3rd Sep 2026222 PMAQI
3rd Sep 2026243 PMAQI
3rd Sep 2026254 PMAQI
3rd Sep 2026255 PMAQI
3rd Sep 2026236 PMAQI
3rd Sep 2026237 PMAQI
3rd Sep 2026278 PMAQI
3rd Sep 2026269 PMAQI
3rd Sep 20264410 PMAQI
3rd Sep 20263611 PMAQI
4th Sep 20262812 AMAQI
4th Sep 2026281 AMAQI
4th Sep 2026262 AMAQI
4th Sep 2026283 AMAQI
4th Sep 2026234 AMAQI

24°C22/26°C

4th Sep 2026235 AMAQI
4th Sep 2026256 AMAQI
4th Sep 2026307 AMAQI
4th Sep 2026328 AMAQI
4th Sep 2026269 AMAQI
4th Sep 20264010 AMAQI
4th Sep 20264411 AMAQI
4th Sep 20263712 PMAQI
4th Sep 2026381 PMAQI
4th Sep 2026342 PMAQI
4th Sep 2026263 PMAQI
4th Sep 2026274 PMAQI
4th Sep 2026295 PMAQI
4th Sep 2026246 PMAQI
4th Sep 2026267 PMAQI
4th Sep 2026268 PMAQI
4th Sep 2026229 PMAQI
4th Sep 20263810 PMAQI
4th Sep 20264011 PMAQI
5th Sep 20264012 AMAQI
5th Sep 2026381 AMAQI
5th Sep 2026402 AMAQI
5th Sep 2026343 AMAQI
5th Sep 2026324 AMAQI

21°C20/23°C

5th Sep 2026345 AMAQI
5th Sep 2026326 AMAQI
5th Sep 2026367 AMAQI
5th Sep 2026368 AMAQI
5th Sep 2026409 AMAQI
5th Sep 20264610 AMAQI
5th Sep 20264611 AMAQI
5th Sep 20264612 PMAQI
5th Sep 2026401 PMAQI
5th Sep 2026442 PMAQI
5th Sep 2026393 PMAQI
5th Sep 2026364 PMAQI
5th Sep 2026365 PMAQI
5th Sep 2026376 PMAQI
5th Sep 2026397 PMAQI
5th Sep 2026368 PMAQI
5th Sep 2026409 PMAQI
5th Sep 20263810 PMAQI
5th Sep 20264211 PMAQI
6th Sep 20264312 AMAQI
6th Sep 2026421 AMAQI
6th Sep 2026422 AMAQI
6th Sep 2026453 AMAQI
6th Sep 2026444 AMAQI

22°C20/25°C

6th Sep 2026445 AMAQI
6th Sep 2026476 AMAQI
6th Sep 2026467 AMAQI
6th Sep 2026468 AMAQI
6th Sep 2026449 AMAQI
6th Sep 20264810 AMAQI
6th Sep 20265011 AMAQI
6th Sep 20264812 PMAQI
6th Sep 2026401 PMAQI
6th Sep 2026482 PMAQI
6th Sep 2026403 PMAQI
6th Sep 2026324 PMAQI
6th Sep 2026305 PMAQI
6th Sep 2026276 PMAQI
6th Sep 2026297 PMAQI
6th Sep 2026348 PMAQI
6th Sep 2026369 PMAQI
6th Sep 20264210 PMAQI
6th Sep 20265011 PMAQI
7th Sep 20264812 AMAQI
7th Sep 2026461 AMAQI
7th Sep 2026482 AMAQI
7th Sep 2026453 AMAQI
7th Sep 2026444 AMAQI

22°C20/25°C

7th Sep 2026405 AMAQI
7th Sep 2026446 AMAQI
7th Sep 2026467 AMAQI
7th Sep 2026468 AMAQI
7th Sep 2026489 AMAQI
7th Sep 20265010 AMAQI
7th Sep 20264211 AMAQI
7th Sep 20265212 PMAQI
7th Sep 2026391 PMAQI
7th Sep 2026452 PMAQI
7th Sep 2026443 PMAQI
7th Sep 2026424 PMAQI
7th Sep 2026345 PMAQI
7th Sep 2026366 PMAQI
7th Sep 2026347 PMAQI
7th Sep 2026428 PMAQI
7th Sep 2026409 PMAQI
7th Sep 20264610 PMAQI
7th Sep 20264411 PMAQI
8th Sep 20264512 AMAQI
8th Sep 2026401 AMAQI
8th Sep 2026442 AMAQI
8th Sep 2026403 AMAQI
8th Sep 2026404 AMAQI

22°C21/23°C

8th Sep 2026425 AMAQI
8th Sep 2026426 AMAQI
8th Sep 2026397 AMAQI
8th Sep 2026408 AMAQI
8th Sep 2026409 AMAQI
8th Sep 20264210 AMAQI
8th Sep 20264611 AMAQI
8th Sep 20264412 PMAQI
8th Sep 2026441 PMAQI
8th Sep 2026462 PMAQI
8th Sep 2026423 PMAQI
8th Sep 2026404 PMAQI
8th Sep 2026405 PMAQI
8th Sep 2026366 PMAQI
8th Sep 2026387 PMAQI
8th Sep 2026408 PMAQI
8th Sep 2026449 PMAQI
8th Sep 20264710 PMAQI
8th Sep 20263911 PMAQI
9th Sep 20262812 AMAQI
9th Sep 2026281 AMAQI
9th Sep 2026322 AMAQI
9th Sep 2026303 AMAQI
9th Sep 2026364 AMAQI

25°C23/28°C

9th Sep 2026425 AMAQI
9th Sep 2026326 AMAQI
9th Sep 2026367 AMAQI
9th Sep 2026328 AMAQI
9th Sep 2026349 AMAQI
9th Sep 20263210 AMAQI
9th Sep 20263011 AMAQI
9th Sep 20262612 PMAQI
9th Sep 2026251 PMAQI
9th Sep 2026282 PMAQI
9th Sep 2026233 PMAQI
9th Sep 2026244 PMAQI
9th Sep 2026215 PMAQI
9th Sep 2026236 PMAQI
9th Sep 2026277 PMAQI
9th Sep 2026388 PMAQI
9th Sep 2026349 PMAQI
9th Sep 20263210 PMAQI
9th Sep 20262411 PMAQI
10th Sep 20262512 AMAQI
10th Sep 2026231 AMAQI
10th Sep 2026272 AMAQI
10th Sep 2026243 AMAQI
10th Sep 2026254 AMAQI

24°C20/27°C

10th Sep 2026215 AMAQI
10th Sep 2026226 AMAQI
10th Sep 2026247 AMAQI
10th Sep 2026268 AMAQI
10th Sep 2026279 AMAQI
10th Sep 20262310 AMAQI
10th Sep 20262511 AMAQI
10th Sep 20263012 PMAQI
10th Sep 2026291 PMAQI
10th Sep 2026292 PMAQI
10th Sep 2026263 PMAQI
10th Sep 2026264 PMAQI
10th Sep 2026265 PMAQI
10th Sep 2026266 PMAQI
10th Sep 2026287 PMAQI
10th Sep 2026288 PMAQI
10th Sep 2026309 PMAQI
10th Sep 20263210 PMAQI
10th Sep 20263211 PMAQI
11th Sep 20263412 AMAQI
11th Sep 2026361 AMAQI
11th Sep 2026402 AMAQI
11th Sep 2026383 AMAQI
11th Sep 2026364 AMAQI

21°C20/22°C

11th Sep 2026345 AMAQI
11th Sep 2026346 AMAQI
11th Sep 2026367 AMAQI
11th Sep 2026428 AMAQI
11th Sep 2026399 AMAQI
11th Sep 20264210 AMAQI
11th Sep 20263711 AMAQI
11th Sep 20264612 PMAQI
11th Sep 2026381 PMAQI
11th Sep 2026382 PMAQI
11th Sep 2026363 PMAQI
11th Sep 2026364 PMAQI
11th Sep 2026375 PMAQI
11th Sep 2026326 PMAQI
11th Sep 2026327 PMAQI
11th Sep 2026328 PMAQI
11th Sep 2026409 PMAQI
11th Sep 20263610 PMAQI
11th Sep 20263611 PMAQI
12th Sep 20263812 AMAQI
12th Sep 2026441 AMAQI
12th Sep 2026422 AMAQI
12th Sep 2026363 AMAQI
12th Sep 2026324 AMAQI

22°C21/23°C

12th Sep 2026435 AMAQI
12th Sep 2026486 AMAQI
12th Sep 2026537 AMAQI
12th Sep 2026528 AMAQI
12th Sep 2026459 AMAQI
12th Sep 20264210 AMAQI
12th Sep 20264211 AMAQI
12th Sep 20263612 PMAQI
12th Sep 2026481 PMAQI
12th Sep 2026522 PMAQI
12th Sep 2026553 PMAQI
12th Sep 2026504 PMAQI
12th Sep 2026405 PMAQI
12th Sep 2026346 PMAQI
12th Sep 2026307 PMAQI
12th Sep 2026308 PMAQI
12th Sep 2026269 PMAQI
12th Sep 20263010 PMAQI
12th Sep 20263211 PMAQI
13th Sep 20262612 AMAQI
13th Sep 2026241 AMAQI
13th Sep 2026232 AMAQI
13th Sep 2026273 AMAQI
13th Sep 2026214 AMAQI

23°C22/24°C

13th Sep 2026246 AMAQI
13th Sep 2026247 AMAQI
13th Sep 2026268 AMAQI
13th Sep 2026279 AMAQI
13th Sep 20262410 AMAQI
13th Sep 20262411 AMAQI
13th Sep 20262612 PMAQI
13th Sep 2026241 PMAQI
13th Sep 2026222 PMAQI
13th Sep 2026253 PMAQI
13th Sep 2026274 PMAQI
13th Sep 2026295 PMAQI
13th Sep 2026326 PMAQI
13th Sep 2026257 PMAQI
13th Sep 2026248 PMAQI
13th Sep 2026289 PMAQI
13th Sep 20262610 PMAQI
13th Sep 20262811 PMAQI
14th Sep 20262912 AMAQI
14th Sep 2026271 AMAQI
14th Sep 2026252 AMAQI
14th Sep 2026233 AMAQI
14th Sep 2026214 AMAQI

25°C22/29°C

14th Sep 2026295 AMAQI
14th Sep 2026286 AMAQI
14th Sep 2026257 AMAQI
14th Sep 2026268 AMAQI
14th Sep 2026259 AMAQI
14th Sep 20263010 AMAQI
14th Sep 20262811 AMAQI
14th Sep 20263012 PMAQI
14th Sep 2026301 PMAQI
14th Sep 2026272 PMAQI
14th Sep 2026243 PMAQI
14th Sep 2026244 PMAQI
14th Sep 2026255 PMAQI
14th Sep 2026256 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026238 PMAQI
14th Sep 2026349 PMAQI
14th Sep 20264610 PMAQI
14th Sep 20263511 PMAQI
15th Sep 20263612 AMAQI
15th Sep 2026381 AMAQI
15th Sep 2026362 AMAQI
15th Sep 2026403 AMAQI
15th Sep 2026364 AMAQI

25°C23/29°C

15th Sep 2026365 AMAQI
15th Sep 2026406 AMAQI
15th Sep 2026397 AMAQI
15th Sep 2026408 AMAQI
15th Sep 2026449 AMAQI
15th Sep 20263210 AMAQI
15th Sep 20264411 AMAQI
15th Sep 20263812 PMAQI
15th Sep 2026341 PMAQI
15th Sep 2026302 PMAQI
15th Sep 2026343 PMAQI
15th Sep 2026354 PMAQI
15th Sep 2026385 PMAQI
15th Sep 2026486 PMAQI
15th Sep 2026407 PMAQI
15th Sep 2026378 PMAQI
15th Sep 2026469 PMAQI
15th Sep 20263610 PMAQI
15th Sep 20263911 PMAQI
16th Sep 20263412 AMAQI
16th Sep 2026381 AMAQI
16th Sep 2026342 AMAQI
16th Sep 2026383 AMAQI
16th Sep 2026384 AMAQI

23°C21/26°C

16th Sep 2026365 AMAQI
16th Sep 2026396 AMAQI
16th Sep 2026387 AMAQI
16th Sep 2026428 AMAQI
16th Sep 2026449 AMAQI
16th Sep 20264410 AMAQI
16th Sep 20264611 AMAQI
16th Sep 20264412 PMAQI
16th Sep 2026411 PMAQI
16th Sep 2026442 PMAQI
16th Sep 2026443 PMAQI
16th Sep 2026444 PMAQI
16th Sep 2026445 PMAQI
16th Sep 2026486 PMAQI
16th Sep 2026447 PMAQI
16th Sep 2026418 PMAQI
16th Sep 2026509 PMAQI
16th Sep 20264610 PMAQI
16th Sep 20265011 PMAQI
17th Sep 20264812 AMAQI
17th Sep 2026441 AMAQI
17th Sep 2026422 AMAQI
17th Sep 2026423 AMAQI
17th Sep 2026424 AMAQI

22°C21/23°C

17th Sep 2026435 AMAQI
17th Sep 2026366 AMAQI
17th Sep 2026407 AMAQI
17th Sep 2026368 AMAQI
17th Sep 2026389 AMAQI
17th Sep 20264610 AMAQI
17th Sep 20264611 AMAQI
17th Sep 20264412 PMAQI
17th Sep 2026401 PMAQI
17th Sep 2026422 PMAQI
17th Sep 2026303 PMAQI
17th Sep 2026364 PMAQI
17th Sep 2026545 PMAQI
17th Sep 2026286 PMAQI
17th Sep 2026307 PMAQI
17th Sep 2026318 PMAQI
17th Sep 2026299 PMAQI
17th Sep 20263210 PMAQI
17th Sep 20263111 PMAQI
18th Sep 20262812 AMAQI
18th Sep 2026311 AMAQI
18th Sep 2026302 AMAQI
18th Sep 2026343 AMAQI
18th Sep 2026324 AMAQI

22°C21/25°C

18th Sep 2026325 AMAQI
18th Sep 2026306 AMAQI
18th Sep 2026347 AMAQI
18th Sep 2026368 AMAQI
18th Sep 2026369 AMAQI
18th Sep 20264010 AMAQI
18th Sep 20263911 AMAQI
18th Sep 20263812 PMAQI
18th Sep 2026421 PMAQI
18th Sep 2026442 PMAQI
18th Sep 2026483 PMAQI
18th Sep 2026524 PMAQI
18th Sep 2026625 PMAQI
18th Sep 2026526 PMAQI
18th Sep 2026467 PMAQI
18th Sep 2026578 PMAQI
18th Sep 2026279 PMAQI
18th Sep 20263010 PMAQI
18th Sep 20264211 PMAQI
19th Sep 20264712 AMAQI
19th Sep 2026511 AMAQI
19th Sep 2026452 AMAQI
19th Sep 2026503 AMAQI
19th Sep 2026554 AMAQI

23°C20/26°C

19th Sep 2026565 AMAQI
19th Sep 2026606 AMAQI
19th Sep 2026557 AMAQI
19th Sep 2026558 AMAQI
19th Sep 2026609 AMAQI
19th Sep 20265210 AMAQI
19th Sep 20265411 AMAQI
19th Sep 20265412 PMAQI
19th Sep 2026501 PMAQI
19th Sep 2026572 PMAQI
19th Sep 2026513 PMAQI
19th Sep 2026564 PMAQI
19th Sep 2026555 PMAQI
19th Sep 2026546 PMAQI
19th Sep 2026547 PMAQI
19th Sep 2026488 PMAQI
19th Sep 2026509 PMAQI
19th Sep 20264910 PMAQI
19th Sep 20264411 PMAQI
20th Sep 20265312 AMAQI
20th Sep 2026491 AMAQI
20th Sep 2026492 AMAQI
20th Sep 2026383 AMAQI
20th Sep 2026334 AMAQI

24°C21/28°C

20th Sep 2026325 AMAQI
20th Sep 2026466 AMAQI
20th Sep 2026427 AMAQI
20th Sep 2026428 AMAQI
20th Sep 2026339 AMAQI
20th Sep 20263810 AMAQI
20th Sep 20263711 AMAQI
20th Sep 20263412 PMAQI
20th Sep 2026321 PMAQI
20th Sep 2026292 PMAQI
20th Sep 2026273 PMAQI
20th Sep 2026234 PMAQI
20th Sep 2026315 PMAQI
20th Sep 2026346 PMAQI
20th Sep 2026247 PMAQI
20th Sep 2026298 PMAQI
20th Sep 2026219 PMAQI
20th Sep 20262310 PMAQI
20th Sep 20262311 PMAQI
21st Sep 20262112 AMAQI
21st Sep 2026211 AMAQI
21st Sep 2026212 AMAQI
21st Sep 2026213 AMAQI
21st Sep 2026224 AMAQI

23°C22/26°C

21st Sep 2026225 AMAQI
21st Sep 2026236 AMAQI
21st Sep 2026217 AMAQI
21st Sep 2026298 AMAQI
21st Sep 2026259 AMAQI
21st Sep 20262110 AMAQI
21st Sep 20262511 AMAQI
21st Sep 20262512 PMAQI
21st Sep 2026251 PMAQI
21st Sep 2026252 PMAQI
21st Sep 2026283 PMAQI
21st Sep 2026254 PMAQI
21st Sep 2026245 PMAQI
21st Sep 2026246 PMAQI
21st Sep 2026237 PMAQI
21st Sep 2026218 PMAQI
21st Sep 2026299 PMAQI
21st Sep 20262010 PMAQI
21st Sep 20261911 PMAQI
22nd Sep 20261812 AMAQI
22nd Sep 2026191 AMAQI
22nd Sep 2026422 AMAQI
22nd Sep 2026623 AMAQI
22nd Sep 2026554 AMAQI

24°C22/26°C

22nd Sep 2026545 AMAQI
22nd Sep 2026286 AMAQI
22nd Sep 2026267 AMAQI
22nd Sep 2026298 AMAQI
22nd Sep 2026269 AMAQI
22nd Sep 20263410 AMAQI
22nd Sep 20262811 AMAQI
22nd Sep 20262812 PMAQI
22nd Sep 2026321 PMAQI
22nd Sep 2026322 PMAQI
22nd Sep 2026323 PMAQI
22nd Sep 2026364 PMAQI
22nd Sep 2026345 PMAQI
22nd Sep 2026406 PMAQI
22nd Sep 2026407 PMAQI
22nd Sep 2026408 PMAQI
22nd Sep 2026449 PMAQI
22nd Sep 20264210 PMAQI
22nd Sep 20263611 PMAQI
23rd Sep 20264012 AMAQI
23rd Sep 2026601 AMAQI
23rd Sep 2026512 AMAQI
23rd Sep 2026273 AMAQI
23rd Sep 2026254 AMAQI

25°C21/30°C

23rd Sep 2026505 AMAQI
23rd Sep 2026346 AMAQI
23rd Sep 2026257 AMAQI
23rd Sep 2026238 AMAQI
23rd Sep 2026259 AMAQI
23rd Sep 20263310 AMAQI
23rd Sep 20262911 AMAQI
23rd Sep 20263112 PMAQI
23rd Sep 2026251 PMAQI
23rd Sep 2026282 PMAQI
23rd Sep 2026253 PMAQI
23rd Sep 2026224 PMAQI
23rd Sep 2026265 PMAQI
23rd Sep 2026256 PMAQI
23rd Sep 2026507 PMAQI
23rd Sep 2026548 PMAQI
23rd Sep 2026549 PMAQI
23rd Sep 20265210 PMAQI
23rd Sep 20263811 PMAQI
24th Sep 20262112 AMAQI
24th Sep 2026201 AMAQI
24th Sep 2026272 AMAQI
24th Sep 2026343 AMAQI
24th Sep 2026274 AMAQI

23°C21/27°C

24th Sep 2026185 AMAQI
24th Sep 2026186 AMAQI
24th Sep 2026257 AMAQI
24th Sep 2026228 AMAQI
24th Sep 2026229 AMAQI
24th Sep 20262110 AMAQI
24th Sep 20262911 AMAQI
24th Sep 20262712 PMAQI
24th Sep 2026281 PMAQI
24th Sep 2026292 PMAQI
24th Sep 2026293 PMAQI
24th Sep 2026374 PMAQI
24th Sep 2026585 PMAQI
24th Sep 2026346 PMAQI
24th Sep 2026327 PMAQI
24th Sep 2026508 PMAQI
24th Sep 2026449 PMAQI
24th Sep 20263810 PMAQI
24th Sep 20263011 PMAQI
25th Sep 20262512 AMAQI
25th Sep 2026271 AMAQI
25th Sep 2026382 AMAQI
25th Sep 2026323 AMAQI
25th Sep 2026384 AMAQI

23°C20/28°C

25th Sep 2026365 AMAQI
25th Sep 2026326 AMAQI
25th Sep 2026327 AMAQI
25th Sep 2026348 AMAQI
25th Sep 2026349 AMAQI
25th Sep 20263810 AMAQI
25th Sep 20263611 AMAQI
25th Sep 20263812 PMAQI
25th Sep 2026371 PMAQI
25th Sep 2026392 PMAQI
25th Sep 2026373 PMAQI
25th Sep 2026314 PMAQI
25th Sep 2026545 PMAQI
25th Sep 2026396 PMAQI
25th Sep 2026547 PMAQI
25th Sep 2026408 PMAQI
25th Sep 2026399 PMAQI
25th Sep 20264110 PMAQI
25th Sep 20264611 PMAQI
26th Sep 20264512 AMAQI
26th Sep 2026461 AMAQI
26th Sep 2026422 AMAQI
26th Sep 2026433 AMAQI
26th Sep 2026564 AMAQI

22°C20/25°C

26th Sep 2026645 AMAQI
26th Sep 2026466 AMAQI
26th Sep 2026507 AMAQI
26th Sep 2026508 AMAQI
26th Sep 2026549 AMAQI
26th Sep 20264410 AMAQI
26th Sep 20266211 AMAQI
26th Sep 20263612 PMAQI
26th Sep 2026291 PMAQI
26th Sep 2026322 PMAQI
26th Sep 2026233 PMAQI
26th Sep 2026294 PMAQI
26th Sep 2026375 PMAQI
26th Sep 2026326 PMAQI
26th Sep 2026427 PMAQI
26th Sep 2026268 PMAQI
26th Sep 2026289 PMAQI
26th Sep 20263110 PMAQI
26th Sep 20264011 PMAQI
27th Sep 20263612 AMAQI
27th Sep 2026381 AMAQI
27th Sep 2026362 AMAQI
27th Sep 2026313 AMAQI
27th Sep 2026274 AMAQI

21°C19/22°C

27th Sep 2026235 AMAQI
27th Sep 2026236 AMAQI
27th Sep 2026217 AMAQI
27th Sep 2026308 AMAQI
27th Sep 2026239 AMAQI
27th Sep 20262510 AMAQI
27th Sep 20262811 AMAQI
27th Sep 20262812 PMAQI
27th Sep 2026211 PMAQI
27th Sep 2026212 PMAQI
27th Sep 2026243 PMAQI
27th Sep 2026294 PMAQI
27th Sep 2026355 PMAQI
27th Sep 2026346 PMAQI
27th Sep 2026227 PMAQI
27th Sep 2026298 PMAQI
27th Sep 2026299 PMAQI
27th Sep 20263010 PMAQI
27th Sep 20262311 PMAQI
28th Sep 20262612 AMAQI
28th Sep 2026231 AMAQI
28th Sep 2026232 AMAQI
28th Sep 2026253 AMAQI
28th Sep 2026214 AMAQI

21°C20/22°C

28th Sep 2026245 AMAQI
28th Sep 2026326 AMAQI
28th Sep 2026327 AMAQI
28th Sep 2026278 AMAQI
28th Sep 2026329 AMAQI
28th Sep 20264210 AMAQI
28th Sep 20263811 AMAQI
28th Sep 20264012 PMAQI
28th Sep 2026401 PMAQI
28th Sep 2026422 PMAQI
28th Sep 2026403 PMAQI
28th Sep 2026384 PMAQI
28th Sep 2026345 PMAQI
28th Sep 2026286 PMAQI
28th Sep 2026327 PMAQI
28th Sep 2026348 PMAQI
28th Sep 2026329 PMAQI
28th Sep 20263010 PMAQI
28th Sep 20264311 PMAQI
29th Sep 20263812 AMAQI
29th Sep 2026381 AMAQI
29th Sep 2026362 AMAQI
29th Sep 2026383 AMAQI
29th Sep 2026384 AMAQI

21°C20/23°C

29th Sep 2026365 AMAQI
29th Sep 2026396 AMAQI
29th Sep 2026407 AMAQI
29th Sep 2026408 AMAQI
29th Sep 2026469 AMAQI
29th Sep 20264310 AMAQI
29th Sep 20264211 AMAQI
29th Sep 20262312 PMAQI
29th Sep 2026211 PMAQI
29th Sep 2026242 PMAQI
29th Sep 2026233 PMAQI
29th Sep 2026224 PMAQI
29th Sep 2026275 PMAQI
29th Sep 2026286 PMAQI
29th Sep 2026287 PMAQI
29th Sep 2026278 PMAQI
29th Sep 2026429 PMAQI
29th Sep 20264510 PMAQI
29th Sep 20264411 PMAQI
30th Sep 20264212 AMAQI
30th Sep 2026341 AMAQI
30th Sep 2026382 AMAQI
30th Sep 2026393 AMAQI
30th Sep 2026384 AMAQI

18°C16/20°C

30th Sep 2026385 AMAQI
30th Sep 2026326 AMAQI
30th Sep 2026307 AMAQI
30th Sep 2026288 AMAQI
30th Sep 2026369 AMAQI
30th Sep 20264410 AMAQI
30th Sep 20264411 AMAQI
30th Sep 20264212 PMAQI
30th Sep 2026401 PMAQI
30th Sep 2026342 PMAQI
30th Sep 2026323 PMAQI
30th Sep 2026474 PMAQI
30th Sep 2026345 PMAQI
30th Sep 2026506 PMAQI
30th Sep 2026257 PMAQI
30th Sep 2026258 PMAQI
30th Sep 2026349 PMAQI
30th Sep 20263410 PMAQI
30th Sep 20262911 PMAQI
1st Oct 20264612 AMAQI
1st Oct 2026341 AMAQI
1st Oct 2026362 AMAQI
1st Oct 2026383 AMAQI
1st Oct 2026344 AMAQI

20°C17/24°C

1st Oct 2026305 AMAQI
1st Oct 2026366 AMAQI
1st Oct 2026327 AMAQI
1st Oct 2026308 AMAQI
1st Oct 2026329 AMAQI
1st Oct 20263010 AMAQI
1st Oct 20262311 AMAQI
1st Oct 20262312 PMAQI
1st Oct 2026251 PMAQI
1st Oct 2026252 PMAQI
1st Oct 2026303 PMAQI
1st Oct 2026344 PMAQI
1st Oct 2026295 PMAQI
1st Oct 2026306 PMAQI
1st Oct 2026277 PMAQI
1st Oct 2026308 PMAQI
1st Oct 2026299 PMAQI
1st Oct 20263410 PMAQI
1st Oct 20264011 PMAQI
2nd Oct 20264412 AMAQI
2nd Oct 2026291 AMAQI
2nd Oct 2026342 AMAQI
2nd Oct 2026363 AMAQI
2nd Oct 2026364 AMAQI

23°C19/27°C

2nd Oct 2026405 AMAQI
5 AM
2nd Oct 2026376 AMAQI
2nd Oct 2026327 AMAQI
2nd Oct 2026348 AMAQI
2nd Oct 2026319 AMAQI
2nd Oct 20262910 AMAQI
2nd Oct 20262811 AMAQI
11 AM
2nd Oct 20262612 PMAQI
2nd Oct 2026281 PMAQI
2nd Oct 2026342 PMAQI
2nd Oct 2026403 PMAQI
2nd Oct 2026404 PMAQI
2nd Oct 2026465 PMAQI
5 PM
2nd Oct 2026526 PMAQI
2nd Oct 2026527 PMAQI
2nd Oct 2026468 PMAQI
2nd Oct 2026479 PMAQI
2nd Oct 20264010 PMAQI
2nd Oct 20263211 PMAQI
11 PM
4 AM

20°C17/25°C

Day time
Avg. Highest Time
10 AM - 12 PM

37AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
3 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 12 PM (Avg. 37), while the lowest AQI was between 3 PM to 3 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 11 PM

35AQI

11 hours / Day
330 hours / Month
Avg. Lowest Time
12 AM - 11 PM

35AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 35), while the lowest AQI was between 12 AM to 11 PM (Avg. 35).

2026 Days Vs Air Quality

Chiryu, Aichi, Japan

2026

88%

242

12%

33

Total number of days with different AQI categories in last 275 days in 2026 (90 days remaining)

Good
242 Days
Moderate
33 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 88%

Health Risk Level:

Low

In 2026, 88% of 275 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

Chiryu, 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
16AQI (US)
2nd January 2026
11AQI (US)
3rd January 2026
10AQI (US)
4th January 2026
19AQI (US)
5th January 2026
38AQI (US)
6th January 2026
13AQI (US)
7th January 2026
21AQI (US)
8th January 2026
33AQI (US)
9th January 2026
16AQI (US)
10th January 2026
28AQI (US)
11th January 2026
26AQI (US)
12th January 2026
18AQI (US)
13th January 2026
35AQI (US)
14th January 2026
23AQI (US)
15th January 2026
36AQI (US)
16th January 2026
54AQI (US)
17th January 2026
52AQI (US)
18th January 2026
55AQI (US)
19th January 2026
62AQI (US)
20th January 2026
37AQI (US)
21st January 2026
10AQI (US)
22nd January 2026
18AQI (US)
23rd January 2026
33AQI (US)
24th January 2026
40AQI (US)
25th January 2026
44AQI (US)
26th January 2026
22AQI (US)
27th January 2026
18AQI (US)
28th January 2026
21AQI (US)
29th January 2026
22AQI (US)
30th January 2026
33AQI (US)
31st January 2026
31AQI (US)
1st February 2026
33AQI (US)
2nd February 2026
19AQI (US)
3rd February 2026
24AQI (US)
4th February 2026
32AQI (US)
5th February 2026
42AQI (US)
6th February 2026
42AQI (US)
7th February 2026
16AQI (US)
8th February 2026
19AQI (US)
9th February 2026
32AQI (US)
10th February 2026
39AQI (US)
11th February 2026
35AQI (US)
12th February 2026
44AQI (US)
13th February 2026
45AQI (US)
14th February 2026
46AQI (US)
15th February 2026
44AQI (US)
16th February 2026
49AQI (US)
17th February 2026
20AQI (US)
18th February 2026
26AQI (US)
19th February 2026
31AQI (US)
20th February 2026
27AQI (US)
21st February 2026
45AQI (US)
22nd February 2026
42AQI (US)
23rd February 2026
48AQI (US)
24th February 2026
48AQI (US)
25th February 2026
23AQI (US)
26th February 2026
20AQI (US)
27th February 2026
46AQI (US)
28th February 2026
42AQI (US)
1st March 2026
24AQI (US)
2nd March 2026
80AQI (US)
3rd March 2026
42AQI (US)
4th March 2026
57AQI (US)
5th March 2026
52AQI (US)
6th March 2026
54AQI (US)
7th March 2026
47AQI (US)
8th March 2026
42AQI (US)
9th March 2026
48AQI (US)
10th March 2026
58AQI (US)
11th March 2026
55AQI (US)
12th March 2026
63AQI (US)
13th March 2026
40AQI (US)
14th March 2026
46AQI (US)
15th March 2026
59AQI (US)
16th March 2026
57AQI (US)
17th March 2026
52AQI (US)
18th March 2026
54AQI (US)
19th March 2026
37AQI (US)
20th March 2026
38AQI (US)
21st March 2026
41AQI (US)
22nd March 2026
49AQI (US)
23rd March 2026
46AQI (US)
24th March 2026
47AQI (US)
25th March 2026
60AQI (US)
26th March 2026
27AQI (US)
27th March 2026
36AQI (US)
28th March 2026
52AQI (US)
29th March 2026
57AQI (US)
30th March 2026
33AQI (US)
31st March 2026
19AQI (US)
1st April 2026
29AQI (US)
2nd April 2026
41AQI (US)
3rd April 2026
48AQI (US)
4th April 2026
44AQI (US)
5th April 2026
37AQI (US)
6th April 2026
31AQI (US)
7th April 2026
35AQI (US)
8th April 2026
23AQI (US)
9th April 2026
29AQI (US)
10th April 2026
46AQI (US)
11th April 2026
35AQI (US)
12th April 2026
32AQI (US)
13th April 2026
35AQI (US)
14th April 2026
41AQI (US)
15th April 2026
24AQI (US)
16th April 2026
28AQI (US)
17th April 2026
40AQI (US)
18th April 2026
28AQI (US)
19th April 2026
33AQI (US)
20th April 2026
38AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
45AQI (US)
23rd April 2026
33AQI (US)
24th April 2026
19AQI (US)
25th April 2026
38AQI (US)
26th April 2026
49AQI (US)
27th April 2026
49AQI (US)
28th April 2026
45AQI (US)
29th April 2026
40AQI (US)
30th April 2026
36AQI (US)
1st May 2026
47AQI (US)
2nd May 2026
52AQI (US)
3rd May 2026
42AQI (US)
4th May 2026
27AQI (US)
5th May 2026
17AQI (US)
6th May 2026
28AQI (US)
7th May 2026
30AQI (US)
8th May 2026
26AQI (US)
9th May 2026
25AQI (US)
10th May 2026
27AQI (US)
11th May 2026
26AQI (US)
12th May 2026
29AQI (US)
13th May 2026
40AQI (US)
14th May 2026
34AQI (US)
15th May 2026
40AQI (US)
16th May 2026
84AQI (US)
17th May 2026
68AQI (US)
18th May 2026
53AQI (US)
19th May 2026
49AQI (US)
20th May 2026
62AQI (US)
21st May 2026
60AQI (US)
22nd May 2026
64AQI (US)
23rd May 2026
55AQI (US)
24th May 2026
59AQI (US)
25th May 2026
47AQI (US)
26th May 2026
40AQI (US)
27th May 2026
24AQI (US)
28th May 2026
25AQI (US)
29th May 2026
24AQI (US)
30th May 2026
24AQI (US)
31st May 2026
27AQI (US)
1st June 2026
32AQI (US)
2nd June 2026
14AQI (US)
3rd June 2026
27AQI (US)
4th June 2026
24AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
22AQI (US)
8th June 2026
21AQI (US)
9th June 2026
23AQI (US)
10th June 2026
22AQI (US)
11th June 2026
25AQI (US)
12th June 2026
31AQI (US)
13th June 2026
40AQI (US)
14th June 2026
26AQI (US)
15th June 2026
21AQI (US)
16th June 2026
25AQI (US)
17th June 2026
24AQI (US)
18th June 2026
26AQI (US)
19th June 2026
31AQI (US)
20th June 2026
21AQI (US)
21st June 2026
18AQI (US)
22nd June 2026
18AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
22AQI (US)
25th June 2026
27AQI (US)
26th June 2026
29AQI (US)
27th June 2026
26AQI (US)
28th June 2026
28AQI (US)
29th June 2026
33AQI (US)
30th June 2026
59AQI (US)
1st July 2026
45AQI (US)
2nd July 2026
17AQI (US)
3rd July 2026
20AQI (US)
4th July 2026
24AQI (US)
5th July 2026
20AQI (US)
6th July 2026
17AQI (US)
7th July 2026
21AQI (US)
8th July 2026
24AQI (US)
9th July 2026
25AQI (US)
10th July 2026
25AQI (US)
11th July 2026
22AQI (US)
12th July 2026
26AQI (US)
13th July 2026
28AQI (US)
14th July 2026
27AQI (US)
15th July 2026
39AQI (US)
16th July 2026
52AQI (US)
17th July 2026
57AQI (US)
18th July 2026
42AQI (US)
19th July 2026
20AQI (US)
20th July 2026
35AQI (US)
21st July 2026
56AQI (US)
22nd July 2026
73AQI (US)
23rd July 2026
50AQI (US)
24th July 2026
48AQI (US)
25th July 2026
45AQI (US)
26th July 2026
40AQI (US)
27th July 2026
30AQI (US)
28th July 2026
35AQI (US)
29th July 2026
30AQI (US)
30th July 2026
48AQI (US)
31st July 2026
42AQI (US)
1st August 2026
42AQI (US)
2nd August 2026
50AQI (US)
3rd August 2026
47AQI (US)
4th August 2026
32AQI (US)
5th August 2026
36AQI (US)
6th August 2026
31AQI (US)
7th August 2026
26AQI (US)
8th August 2026
28AQI (US)
9th August 2026
27AQI (US)
10th August 2026
30AQI (US)
11th August 2026
34AQI (US)
12th August 2026
29AQI (US)
13th August 2026
28AQI (US)
14th August 2026
28AQI (US)
15th August 2026
28AQI (US)
16th August 2026
27AQI (US)
17th August 2026
24AQI (US)
18th August 2026
30AQI (US)
19th August 2026
32AQI (US)
20th August 2026
38AQI (US)
21st August 2026
42AQI (US)
22nd August 2026
36AQI (US)
23rd August 2026
35AQI (US)
24th August 2026
36AQI (US)
25th August 2026
36AQI (US)
26th August 2026
35AQI (US)
27th August 2026
27AQI (US)
28th August 2026
30AQI (US)
29th August 2026
36AQI (US)
30th August 2026
37AQI (US)
31st August 2026
36AQI (US)
1st September 2026
34AQI (US)
2nd September 2026
26AQI (US)
3rd September 2026
26AQI (US)
4th September 2026
30AQI (US)
5th September 2026
38AQI (US)
6th September 2026
42AQI (US)
7th September 2026
44AQI (US)
8th September 2026
42AQI (US)
9th September 2026
30AQI (US)
10th September 2026
26AQI (US)
11th September 2026
37AQI (US)
12th September 2026
40AQI (US)
13th September 2026
26AQI (US)
14th September 2026
28AQI (US)
15th September 2026
38AQI (US)
16th September 2026
42AQI (US)
17th September 2026
38AQI (US)
18th September 2026
39AQI (US)
19th September 2026
53AQI (US)
20th September 2026
34AQI (US)
21st September 2026
24AQI (US)
22nd September 2026
36AQI (US)
23rd September 2026
36AQI (US)
24th September 2026
30AQI (US)
25th September 2026
37AQI (US)
26th September 2026
41AQI (US)
27th September 2026
28AQI (US)
28th September 2026
32AQI (US)
29th September 2026
34AQI (US)
30th September 2026
36AQI (US)
1st October 2026
32AQI (US)
2nd October 2026
38AQI (US)
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)

47AQI (US)

36AQI (US)

40AQI (US)

26AQI (US)

35AQI (US)

33AQI (US)

35AQI (US)

35AQI (US)

No. of days

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

202635AQI (US)

27
4
28
17
14
30
22
9
29
1
27
4
31
29
1
2
242
33

Highest AQI (US) recorded in

March

47AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202533AQI (US)

31
28
29
2
30
31
30
19
12
22
9
29
1
24
7
22
8
27
4
322
43

Highest AQI (US) recorded in

August

47AQI (US)

Lowest AQI (US) recorded in

May

17AQI (US)

202436AQI (US)

29
1
27
2
27
4
20
10
29
2
30
30
1
28
3
23
7
29
2
29
1
31
332
33

Highest AQI (US) recorded in

April

48AQI (US)

Lowest AQI (US) recorded in

December

25AQI (US)

202337AQI (US)

30
1
26
2
24
7
18
12
26
5
22
8
25
6
31
28
2
24
4
24
5
27
4
305
56

Highest AQI (US) recorded in

April

47AQI (US)

Lowest AQI (US) recorded in

August

23AQI (US)

202235AQI (US)

2
20
1
26
5
25
4
22
9
26
4
19
3
1
23
5
27
2
29
1
31
251
34

Highest AQI (US) recorded in

May

42AQI (US)

Lowest AQI (US) recorded in

January

21AQI (US)

202131AQI (US)

28
2
24
4
31
22
30
1
26
4
30
1
30
1
27
3
29
28
2
31
336
18

Highest AQI (US) recorded in

June

40AQI (US)

Lowest AQI (US) recorded in

April

23AQI (US)

202033AQI (US)

13
18
3
17
1
24
6
29
2
20
11
11
1
27
2
24
6
30
1
213
33

Highest AQI (US) recorded in

August

45AQI (US)

Lowest AQI (US) recorded in

July

25AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
37AQI (US)
Least Polluted Year Recorded
2021(Avg.)
31AQI (US)

Chiryu's annual 2026 AQI (US) (35) shows an average percentage change of 2.8% (worsened AQI (US)) compared to previous years: 2020 (33), 2021 (31), 2022 (35), 2023 (37), 2024 (36), 2025 (33).