Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Obu, 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

Obu, Aichi, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Oct 2025
57AQI
Lowest AQI recorded on
9th Oct 2022
16AQI

Same Day Analysis (1st October):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 28 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.

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

Obu, Aichi, Japan

AQI
Day
Night
.

5 AM1st Oct 2026

5 PM

4 AM2nd Oct 2026

Day time
Avg. Highest Time
6AM1st Oct

34AQI

Avg. Lowest Time
2PM1st Oct

22AQI

Night time
Avg. Highest Time
12AM2nd Oct

36AQI

Avg. Lowest Time
7PM1st Oct

25AQI

In the last 24 hours,

Obu's AQI reached its highest point of 36 at 12 AM during the Night, while the lowest point, 22, was recorded at 2 PM during the Day between 1st Oct and 2nd Oct 2026.

Day & Night AQI Trend : Sep - Oct 2026

Obu, 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 2026215 AMAQI
3rd Sep 2026216 AMAQI
3rd Sep 2026297 AMAQI
3rd Sep 2026228 AMAQI
3rd Sep 2026229 AMAQI
3rd Sep 20262410 AMAQI
3rd Sep 20262411 AMAQI
3rd Sep 20262912 PMAQI
3rd Sep 2026231 PMAQI
3rd Sep 2026212 PMAQI
3rd Sep 2026223 PMAQI
3rd Sep 2026234 PMAQI
3rd Sep 2026215 PMAQI
3rd Sep 2026266 PMAQI
3rd Sep 2026237 PMAQI
3rd Sep 2026288 PMAQI
3rd Sep 2026309 PMAQI
3rd Sep 20263010 PMAQI
3rd Sep 20262811 PMAQI
4th Sep 20262512 AMAQI
4th Sep 2026251 AMAQI
4th Sep 2026242 AMAQI
4th Sep 2026253 AMAQI
4th Sep 2026244 AMAQI

26°C23/27°C

4th Sep 2026215 AMAQI
4th Sep 2026236 AMAQI
4th Sep 2026257 AMAQI
4th Sep 2026258 AMAQI
4th Sep 2026219 AMAQI
4th Sep 20262510 AMAQI
4th Sep 20262811 AMAQI
4th Sep 20262112 PMAQI
4th Sep 2026211 PMAQI
4th Sep 2026252 PMAQI
4th Sep 2026213 PMAQI
4th Sep 2026254 PMAQI
4th Sep 2026275 PMAQI
4th Sep 2026256 PMAQI
4th Sep 2026277 PMAQI
4th Sep 2026258 PMAQI
4th Sep 2026279 PMAQI
4th Sep 20262510 PMAQI
4th Sep 20262611 PMAQI
5th Sep 20262312 AMAQI
5th Sep 2026251 AMAQI
5th Sep 2026252 AMAQI
5th Sep 2026253 AMAQI
5th Sep 2026234 AMAQI

23°C21/25°C

5th Sep 2026255 AMAQI
5th Sep 2026256 AMAQI
5th Sep 2026217 AMAQI
5th Sep 2026258 AMAQI
5th Sep 2026299 AMAQI
5th Sep 20262910 AMAQI
5th Sep 20262511 AMAQI
5th Sep 20262412 PMAQI
5th Sep 2026271 PMAQI
5th Sep 2026272 PMAQI
5th Sep 2026253 PMAQI
5th Sep 2026304 PMAQI
5th Sep 2026235 PMAQI
5th Sep 2026236 PMAQI
5th Sep 2026227 PMAQI
5th Sep 2026238 PMAQI
5th Sep 2026239 PMAQI
5th Sep 20262410 PMAQI
5th Sep 20262111 PMAQI
6th Sep 20262412 AMAQI
6th Sep 2026211 AMAQI
6th Sep 2026252 AMAQI
6th Sep 2026253 AMAQI
6th Sep 2026214 AMAQI

23°C22/25°C

6th Sep 2026255 AMAQI
6th Sep 2026256 AMAQI
6th Sep 2026237 AMAQI
6th Sep 2026258 AMAQI
6th Sep 2026269 AMAQI
6th Sep 20262310 AMAQI
6th Sep 20262311 AMAQI
6th Sep 20262212 PMAQI
6th Sep 2026221 PMAQI
6th Sep 2026222 PMAQI
6th Sep 2026213 PMAQI
6th Sep 2026224 PMAQI
6th Sep 2026245 PMAQI
6th Sep 2026236 PMAQI
6th Sep 2026257 PMAQI
6th Sep 2026258 PMAQI
6th Sep 2026259 PMAQI
6th Sep 20262410 PMAQI
6th Sep 20262511 PMAQI
7th Sep 20262412 AMAQI
7th Sep 2026231 AMAQI
7th Sep 2026242 AMAQI
7th Sep 2026253 AMAQI
7th Sep 2026254 AMAQI

23°C20/26°C

7th Sep 2026235 AMAQI
7th Sep 2026256 AMAQI
7th Sep 2026217 AMAQI
7th Sep 2026258 AMAQI
7th Sep 2026219 AMAQI
7th Sep 20262110 AMAQI
7th Sep 20262311 AMAQI
7th Sep 20262512 PMAQI
7th Sep 2026251 PMAQI
7th Sep 2026252 PMAQI
7th Sep 2026253 PMAQI
7th Sep 2026254 PMAQI
7th Sep 2026255 PMAQI
7th Sep 2026216 PMAQI
7th Sep 2026307 PMAQI
7th Sep 2026278 PMAQI
7th Sep 2026259 PMAQI
7th Sep 20262510 PMAQI
7th Sep 20263011 PMAQI
8th Sep 20262512 AMAQI
8th Sep 2026211 AMAQI
8th Sep 2026252 AMAQI
8th Sep 2026293 AMAQI
8th Sep 2026274 AMAQI

23°C22/23°C

8th Sep 2026275 AMAQI
8th Sep 2026306 AMAQI
8th Sep 2026277 AMAQI
8th Sep 2026258 AMAQI
8th Sep 2026219 AMAQI
8th Sep 20262510 AMAQI
8th Sep 20262511 AMAQI
8th Sep 20262512 PMAQI
8th Sep 2026271 PMAQI
8th Sep 2026252 PMAQI
8th Sep 2026273 PMAQI
8th Sep 2026294 PMAQI
8th Sep 2026255 PMAQI
8th Sep 2026276 PMAQI
8th Sep 2026267 PMAQI
8th Sep 2026278 PMAQI
8th Sep 2026259 PMAQI
8th Sep 20263210 PMAQI
8th Sep 20263011 PMAQI
9th Sep 20262312 AMAQI
9th Sep 2026211 AMAQI
9th Sep 2026222 AMAQI
9th Sep 2026293 AMAQI
9th Sep 2026344 AMAQI

26°C23/29°C

9th Sep 2026415 AMAQI
9th Sep 2026256 AMAQI
9th Sep 2026277 AMAQI
9th Sep 2026278 AMAQI
9th Sep 2026239 AMAQI
9th Sep 20262610 AMAQI
9th Sep 20262311 AMAQI
9th Sep 20262512 PMAQI
9th Sep 2026241 PMAQI
9th Sep 2026252 PMAQI
9th Sep 2026243 PMAQI
9th Sep 2026244 PMAQI
9th Sep 2026235 PMAQI
9th Sep 2026246 PMAQI
9th Sep 2026387 PMAQI
9th Sep 2026348 PMAQI
9th Sep 2026359 PMAQI
9th Sep 20263610 PMAQI
9th Sep 20262711 PMAQI
10th Sep 20263012 AMAQI
10th Sep 2026231 AMAQI
10th Sep 2026282 AMAQI
10th Sep 2026283 AMAQI
10th Sep 2026344 AMAQI

25°C22/29°C

10th Sep 2026245 AMAQI
10th Sep 2026256 AMAQI
10th Sep 2026257 AMAQI
10th Sep 2026258 AMAQI
10th Sep 2026239 AMAQI
10th Sep 20262110 AMAQI
10th Sep 20262211 AMAQI
10th Sep 20262212 PMAQI
10th Sep 2026221 PMAQI
10th Sep 2026252 PMAQI
10th Sep 2026253 PMAQI
10th Sep 2026274 PMAQI
10th Sep 2026315 PMAQI
10th Sep 2026276 PMAQI
10th Sep 2026247 PMAQI
10th Sep 2026228 PMAQI
10th Sep 2026239 PMAQI
10th Sep 20262310 PMAQI
10th Sep 20262311 PMAQI
11th Sep 20262512 AMAQI
11th Sep 2026281 AMAQI
11th Sep 2026252 AMAQI
11th Sep 2026253 AMAQI
11th Sep 2026264 AMAQI

21°C21/22°C

11th Sep 2026235 AMAQI
11th Sep 2026226 AMAQI
11th Sep 2026247 AMAQI
11th Sep 2026228 AMAQI
11th Sep 2026229 AMAQI
11th Sep 20262110 AMAQI
11th Sep 20262111 AMAQI
11th Sep 20262312 PMAQI
11th Sep 2026241 PMAQI
11th Sep 2026212 PMAQI
11th Sep 2026213 PMAQI
11th Sep 2026214 PMAQI
11th Sep 2026255 PMAQI
11th Sep 2026216 PMAQI
11th Sep 2026257 PMAQI
11th Sep 2026258 PMAQI
11th Sep 2026299 PMAQI
11th Sep 20262310 PMAQI
11th Sep 20262311 PMAQI
12th Sep 20262212 AMAQI
12th Sep 2026231 AMAQI
12th Sep 2026212 AMAQI
12th Sep 2026293 AMAQI
12th Sep 2026234 AMAQI

22°C21/24°C

12th Sep 2026365 AMAQI
12th Sep 2026476 AMAQI
12th Sep 2026537 AMAQI
12th Sep 2026558 AMAQI
12th Sep 2026419 AMAQI
12th Sep 20263410 AMAQI
12th Sep 20263611 AMAQI
12th Sep 20263912 PMAQI
12th Sep 2026541 PMAQI
12th Sep 2026622 PMAQI
12th Sep 2026743 PMAQI
12th Sep 2026644 PMAQI
12th Sep 2026565 PMAQI
12th Sep 2026366 PMAQI
12th Sep 2026247 PMAQI
12th Sep 2026188 PMAQI
12th Sep 2026109 PMAQI
12th Sep 20261610 PMAQI
12th Sep 20261611 PMAQI
13th Sep 20261012 AMAQI
13th Sep 2026101 AMAQI
13th Sep 202682 AMAQI
13th Sep 202683 AMAQI
13th Sep 202684 AMAQI

24°C23/26°C

13th Sep 2026106 AMAQI
13th Sep 2026107 AMAQI
13th Sep 202688 AMAQI
13th Sep 202689 AMAQI
13th Sep 2026910 AMAQI
13th Sep 20261411 AMAQI
13th Sep 20261812 PMAQI
13th Sep 2026121 PMAQI
13th Sep 202672 PMAQI
13th Sep 2026143 PMAQI
13th Sep 2026144 PMAQI
13th Sep 2026115 PMAQI
13th Sep 2026146 PMAQI
13th Sep 2026167 PMAQI
13th Sep 2026168 PMAQI
13th Sep 2026139 PMAQI
13th Sep 20262410 PMAQI
13th Sep 20262411 PMAQI
14th Sep 20262412 AMAQI
14th Sep 2026241 AMAQI
14th Sep 2026222 AMAQI
14th Sep 2026103 AMAQI
14th Sep 2026164 AMAQI

26°C23/30°C

14th Sep 2026135 AMAQI
14th Sep 2026136 AMAQI
14th Sep 2026127 AMAQI
14th Sep 2026128 AMAQI
14th Sep 2026129 AMAQI
14th Sep 20261210 AMAQI
14th Sep 20261211 AMAQI
14th Sep 20261212 PMAQI
14th Sep 2026101 PMAQI
14th Sep 202692 PMAQI
14th Sep 2026233 PMAQI
14th Sep 2026254 PMAQI
14th Sep 2026245 PMAQI
14th Sep 2026276 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026258 PMAQI
14th Sep 2026259 PMAQI
14th Sep 20262710 PMAQI
14th Sep 20262511 PMAQI
15th Sep 20262512 AMAQI
15th Sep 2026251 AMAQI
15th Sep 2026252 AMAQI
15th Sep 2026233 AMAQI
15th Sep 2026214 AMAQI

27°C24/30°C

15th Sep 2026255 AMAQI
15th Sep 2026216 AMAQI
15th Sep 2026257 AMAQI
15th Sep 2026258 AMAQI
15th Sep 2026219 AMAQI
15th Sep 20262510 AMAQI
15th Sep 20262511 AMAQI
15th Sep 20262512 PMAQI
15th Sep 2026211 PMAQI
15th Sep 2026252 PMAQI
15th Sep 2026253 PMAQI
15th Sep 2026254 PMAQI
15th Sep 2026255 PMAQI
15th Sep 2026386 PMAQI
15th Sep 2026317 PMAQI
15th Sep 2026318 PMAQI
15th Sep 2026259 PMAQI
15th Sep 20262510 PMAQI
15th Sep 20262311 PMAQI
16th Sep 20262712 AMAQI
16th Sep 2026291 AMAQI
16th Sep 2026242 AMAQI
16th Sep 2026233 AMAQI
16th Sep 2026214 AMAQI

24°C22/25°C

16th Sep 2026215 AMAQI
16th Sep 2026256 AMAQI
16th Sep 2026257 AMAQI
16th Sep 2026258 AMAQI
16th Sep 2026219 AMAQI
16th Sep 20262110 AMAQI
16th Sep 20262511 AMAQI
16th Sep 20262612 PMAQI
16th Sep 2026251 PMAQI
16th Sep 2026252 PMAQI
16th Sep 2026293 PMAQI
16th Sep 2026274 PMAQI
16th Sep 2026305 PMAQI
16th Sep 2026306 PMAQI
16th Sep 2026297 PMAQI
16th Sep 2026268 PMAQI
16th Sep 2026279 PMAQI
16th Sep 20262310 PMAQI
16th Sep 20262411 PMAQI
17th Sep 20262112 AMAQI
17th Sep 2026251 AMAQI
17th Sep 2026232 AMAQI
17th Sep 2026253 AMAQI
17th Sep 2026254 AMAQI

23°C22/24°C

17th Sep 2026255 AMAQI
17th Sep 2026276 AMAQI
17th Sep 2026257 AMAQI
17th Sep 2026258 AMAQI
17th Sep 2026219 AMAQI
17th Sep 20262510 AMAQI
17th Sep 20262311 AMAQI
17th Sep 20262112 PMAQI
17th Sep 2026251 PMAQI
17th Sep 2026262 PMAQI
17th Sep 2026253 PMAQI
17th Sep 2026284 PMAQI
17th Sep 2026505 PMAQI
17th Sep 2026256 PMAQI
17th Sep 2026257 PMAQI
17th Sep 2026228 PMAQI
17th Sep 2026219 PMAQI
17th Sep 20262310 PMAQI
17th Sep 20263411 PMAQI
18th Sep 20262312 AMAQI
18th Sep 2026251 AMAQI
18th Sep 2026212 AMAQI
18th Sep 2026213 AMAQI
18th Sep 2026244 AMAQI

23°C22/26°C

18th Sep 2026235 AMAQI
18th Sep 2026216 AMAQI
18th Sep 2026237 AMAQI
18th Sep 2026278 AMAQI
18th Sep 2026269 AMAQI
18th Sep 20262510 AMAQI
18th Sep 20262911 AMAQI
18th Sep 20262712 PMAQI
18th Sep 2026341 PMAQI
18th Sep 2026322 PMAQI
18th Sep 2026463 PMAQI
18th Sep 2026474 PMAQI
18th Sep 2026625 PMAQI
18th Sep 2026466 PMAQI
18th Sep 2026347 PMAQI
18th Sep 2026448 PMAQI
18th Sep 2026319 PMAQI
18th Sep 20263110 PMAQI
18th Sep 20264111 PMAQI
19th Sep 20263912 AMAQI
19th Sep 2026511 AMAQI
19th Sep 2026412 AMAQI
19th Sep 2026403 AMAQI
19th Sep 2026464 AMAQI

25°C22/28°C

19th Sep 2026445 AMAQI
19th Sep 2026536 AMAQI
19th Sep 2026507 AMAQI
19th Sep 2026508 AMAQI
19th Sep 2026529 AMAQI
19th Sep 20265210 AMAQI
19th Sep 20265211 AMAQI
19th Sep 20265612 PMAQI
19th Sep 2026581 PMAQI
19th Sep 2026582 PMAQI
19th Sep 2026693 PMAQI
19th Sep 2026664 PMAQI
19th Sep 2026625 PMAQI
19th Sep 2026556 PMAQI
19th Sep 2026537 PMAQI
19th Sep 2026378 PMAQI
19th Sep 2026289 PMAQI
19th Sep 20262510 PMAQI
19th Sep 20263211 PMAQI
20th Sep 20263812 AMAQI
20th Sep 2026391 AMAQI
20th Sep 2026342 AMAQI
20th Sep 2026163 AMAQI
20th Sep 2026254 AMAQI

26°C22/30°C

20th Sep 2026285 AMAQI
20th Sep 2026346 AMAQI
20th Sep 2026297 AMAQI
20th Sep 2026278 AMAQI
20th Sep 2026219 AMAQI
20th Sep 20261910 AMAQI
20th Sep 20262611 AMAQI
20th Sep 20262512 PMAQI
20th Sep 2026261 PMAQI
20th Sep 2026342 PMAQI
20th Sep 2026273 PMAQI
20th Sep 2026244 PMAQI
20th Sep 2026285 PMAQI
20th Sep 2026306 PMAQI
20th Sep 2026247 PMAQI
20th Sep 2026268 PMAQI
20th Sep 2026259 PMAQI
20th Sep 20262210 PMAQI
20th Sep 20262211 PMAQI
21st Sep 20261612 AMAQI
21st Sep 2026181 AMAQI
21st Sep 2026192 AMAQI
21st Sep 2026183 AMAQI
21st Sep 2026244 AMAQI

26°C24/29°C

21st Sep 2026215 AMAQI
21st Sep 2026216 AMAQI
21st Sep 2026167 AMAQI
21st Sep 2026168 AMAQI
21st Sep 2026199 AMAQI
21st Sep 20261410 AMAQI
21st Sep 20261611 AMAQI
21st Sep 20262112 PMAQI
21st Sep 2026231 PMAQI
21st Sep 2026242 PMAQI
21st Sep 2026253 PMAQI
21st Sep 2026264 PMAQI
21st Sep 2026225 PMAQI
21st Sep 2026246 PMAQI
21st Sep 2026227 PMAQI
21st Sep 2026218 PMAQI
21st Sep 2026259 PMAQI
21st Sep 20261910 PMAQI
21st Sep 20262011 PMAQI
22nd Sep 20261912 AMAQI
22nd Sep 2026211 AMAQI
22nd Sep 2026412 AMAQI
22nd Sep 2026563 AMAQI
22nd Sep 2026544 AMAQI

25°C23/27°C

22nd Sep 2026545 AMAQI
22nd Sep 2026306 AMAQI
22nd Sep 2026277 AMAQI
22nd Sep 2026228 AMAQI
22nd Sep 2026279 AMAQI
22nd Sep 20263110 AMAQI
22nd Sep 20262911 AMAQI
22nd Sep 20262912 PMAQI
22nd Sep 2026211 PMAQI
22nd Sep 2026262 PMAQI
22nd Sep 2026253 PMAQI
22nd Sep 2026294 PMAQI
22nd Sep 2026305 PMAQI
22nd Sep 2026226 PMAQI
22nd Sep 2026247 PMAQI
22nd Sep 2026238 PMAQI
22nd Sep 2026229 PMAQI
22nd Sep 20262410 PMAQI
22nd Sep 20262411 PMAQI
23rd Sep 20262412 AMAQI
23rd Sep 2026521 AMAQI
23rd Sep 2026422 AMAQI
23rd Sep 2026213 AMAQI
23rd Sep 2026274 AMAQI

26°C22/31°C

23rd Sep 2026435 AMAQI
23rd Sep 2026356 AMAQI
23rd Sep 2026277 AMAQI
23rd Sep 2026218 AMAQI
23rd Sep 2026269 AMAQI
23rd Sep 20263010 AMAQI
23rd Sep 20262811 AMAQI
23rd Sep 20262912 PMAQI
23rd Sep 2026211 PMAQI
23rd Sep 2026312 PMAQI
23rd Sep 2026283 PMAQI
23rd Sep 2026264 PMAQI
23rd Sep 2026255 PMAQI
23rd Sep 2026326 PMAQI
23rd Sep 2026507 PMAQI
23rd Sep 2026508 PMAQI
23rd Sep 2026469 PMAQI
23rd Sep 20264710 PMAQI
23rd Sep 20263811 PMAQI
24th Sep 20262912 AMAQI
24th Sep 2026231 AMAQI
24th Sep 2026252 AMAQI
24th Sep 2026293 AMAQI
24th Sep 2026234 AMAQI

24°C23/28°C

24th Sep 2026255 AMAQI
24th Sep 2026286 AMAQI
24th Sep 2026227 AMAQI
24th Sep 2026258 AMAQI
24th Sep 2026259 AMAQI
24th Sep 20262310 AMAQI
24th Sep 20262611 AMAQI
24th Sep 20263612 PMAQI
24th Sep 2026211 PMAQI
24th Sep 2026302 PMAQI
24th Sep 2026323 PMAQI
24th Sep 2026444 PMAQI
24th Sep 2026535 PMAQI
24th Sep 2026346 PMAQI
24th Sep 2026347 PMAQI
24th Sep 2026488 PMAQI
24th Sep 2026409 PMAQI
24th Sep 20263610 PMAQI
24th Sep 20263111 PMAQI
25th Sep 20262912 AMAQI
25th Sep 2026281 AMAQI
25th Sep 2026302 AMAQI
25th Sep 2026303 AMAQI
25th Sep 2026284 AMAQI

25°C22/30°C

25th Sep 2026285 AMAQI
25th Sep 2026276 AMAQI
25th Sep 2026277 AMAQI
25th Sep 2026278 AMAQI
25th Sep 2026279 AMAQI
25th Sep 20262610 AMAQI
25th Sep 20262611 AMAQI
25th Sep 20262812 PMAQI
25th Sep 2026301 PMAQI
25th Sep 2026312 PMAQI
25th Sep 2026363 PMAQI
25th Sep 2026444 PMAQI
25th Sep 2026575 PMAQI
25th Sep 2026456 PMAQI
25th Sep 2026547 PMAQI
25th Sep 2026438 PMAQI
25th Sep 2026409 PMAQI
25th Sep 20264210 PMAQI
25th Sep 20264311 PMAQI
26th Sep 20264512 AMAQI
26th Sep 2026461 AMAQI
26th Sep 2026472 AMAQI
26th Sep 2026473 AMAQI
26th Sep 2026484 AMAQI

24°C21/27°C

26th Sep 2026545 AMAQI
26th Sep 2026466 AMAQI
26th Sep 2026487 AMAQI
26th Sep 2026498 AMAQI
26th Sep 2026489 AMAQI
26th Sep 20264310 AMAQI
26th Sep 20264511 AMAQI
26th Sep 20263412 PMAQI
26th Sep 2026311 PMAQI
26th Sep 2026292 PMAQI
26th Sep 2026293 PMAQI
26th Sep 2026284 PMAQI
26th Sep 2026295 PMAQI
26th Sep 2026296 PMAQI
26th Sep 2026307 PMAQI
26th Sep 2026328 PMAQI
26th Sep 2026319 PMAQI
26th Sep 20263210 PMAQI
26th Sep 20263611 PMAQI
27th Sep 20264112 AMAQI
27th Sep 2026421 AMAQI
27th Sep 2026392 AMAQI
27th Sep 2026313 AMAQI
27th Sep 2026294 AMAQI

21°C20/23°C

27th Sep 2026275 AMAQI
27th Sep 2026266 AMAQI
27th Sep 2026267 AMAQI
27th Sep 2026318 AMAQI
27th Sep 2026279 AMAQI
27th Sep 20262610 AMAQI
27th Sep 20263011 AMAQI
27th Sep 20262712 PMAQI
27th Sep 2026261 PMAQI
27th Sep 2026272 PMAQI
27th Sep 2026293 PMAQI
27th Sep 2026344 PMAQI
27th Sep 2026435 PMAQI
27th Sep 2026476 PMAQI
27th Sep 2026247 PMAQI
27th Sep 2026308 PMAQI
27th Sep 2026309 PMAQI
27th Sep 20263410 PMAQI
27th Sep 20262911 PMAQI
28th Sep 20263612 AMAQI
28th Sep 2026271 AMAQI
28th Sep 2026292 AMAQI
28th Sep 2026223 AMAQI
28th Sep 2026224 AMAQI

22°C20/23°C

28th Sep 2026255 AMAQI
28th Sep 2026256 AMAQI
28th Sep 2026237 AMAQI
28th Sep 2026248 AMAQI
28th Sep 2026229 AMAQI
28th Sep 20262210 AMAQI
28th Sep 20262111 AMAQI
28th Sep 20262212 PMAQI
28th Sep 2026221 PMAQI
28th Sep 2026242 PMAQI
28th Sep 2026223 PMAQI
28th Sep 2026224 PMAQI
28th Sep 2026275 PMAQI
28th Sep 2026246 PMAQI
28th Sep 2026237 PMAQI
28th Sep 2026238 PMAQI
28th Sep 2026239 PMAQI
28th Sep 20262410 PMAQI
28th Sep 20262511 PMAQI
29th Sep 20262412 AMAQI
29th Sep 2026281 AMAQI
29th Sep 2026252 AMAQI
29th Sep 2026243 AMAQI
29th Sep 2026244 AMAQI

22°C21/24°C

29th Sep 2026255 AMAQI
29th Sep 2026246 AMAQI
29th Sep 2026237 AMAQI
29th Sep 2026258 AMAQI
29th Sep 2026269 AMAQI
29th Sep 20262110 AMAQI
29th Sep 20263011 AMAQI
29th Sep 20262512 PMAQI
29th Sep 2026251 PMAQI
29th Sep 2026262 PMAQI
29th Sep 2026253 PMAQI
29th Sep 2026254 PMAQI
29th Sep 2026255 PMAQI
29th Sep 2026236 PMAQI
29th Sep 2026227 PMAQI
29th Sep 2026228 PMAQI
29th Sep 2026259 PMAQI
29th Sep 20262610 PMAQI
29th Sep 20262311 PMAQI
30th Sep 20262112 AMAQI
30th Sep 2026251 AMAQI
30th Sep 2026212 AMAQI
30th Sep 2026213 AMAQI
30th Sep 2026244 AMAQI

19°C17/21°C

30th Sep 2026235 AMAQI
30th Sep 2026236 AMAQI
30th Sep 2026217 AMAQI
30th Sep 2026248 AMAQI
30th Sep 2026239 AMAQI
30th Sep 20262310 AMAQI
30th Sep 20262511 AMAQI
30th Sep 20262412 PMAQI
30th Sep 2026211 PMAQI
30th Sep 2026232 PMAQI
30th Sep 2026233 PMAQI
30th Sep 2026474 PMAQI
30th Sep 2026285 PMAQI
30th Sep 2026526 PMAQI
30th Sep 2026307 PMAQI
30th Sep 2026278 PMAQI
30th Sep 2026329 PMAQI
30th Sep 20262210 PMAQI
30th Sep 20262511 PMAQI
1st Oct 20264212 AMAQI
1st Oct 2026291 AMAQI
1st Oct 2026322 AMAQI
1st Oct 2026303 AMAQI
1st Oct 2026384 AMAQI

21°C17/24°C

1st Oct 2026315 AMAQI
1st Oct 2026346 AMAQI
1st Oct 2026297 AMAQI
1st Oct 2026258 AMAQI
1st Oct 2026259 AMAQI
1st Oct 20262510 AMAQI
1st Oct 20262211 AMAQI
1st Oct 20262412 PMAQI
1st Oct 2026231 PMAQI
1st Oct 2026222 PMAQI
1st Oct 2026253 PMAQI
1st Oct 2026264 PMAQI
1st Oct 2026235 PMAQI
1st Oct 2026276 PMAQI
1st Oct 2026257 PMAQI
1st Oct 2026278 PMAQI
1st Oct 2026289 PMAQI
1st Oct 20263010 PMAQI
1st Oct 20263411 PMAQI
2nd Oct 20263612 AMAQI
2nd Oct 2026301 AMAQI
2nd Oct 2026302 AMAQI
2nd Oct 2026303 AMAQI
2nd Oct 2026324 AMAQI

24°C21/29°C

2nd Oct 2026365 AMAQI
5 AM
2nd Oct 2026376 AMAQI
2nd Oct 2026367 AMAQI
2nd Oct 2026328 AMAQI
2nd Oct 2026279 AMAQI
2nd Oct 20262410 AMAQI
2nd Oct 20262811 AMAQI
11 AM
2nd Oct 20262512 PMAQI
2nd Oct 2026221 PMAQI
2nd Oct 2026342 PMAQI
2nd Oct 2026403 PMAQI
2nd Oct 2026404 PMAQI
2nd Oct 2026485 PMAQI
5 PM
2nd Oct 2026546 PMAQI
2nd Oct 2026467 PMAQI
2nd Oct 2026428 PMAQI
2nd Oct 2026449 PMAQI
2nd Oct 20263510 PMAQI
2nd Oct 20262811 PMAQI
11 PM
4 AM

22°C18/26°C

Day time
Avg. Highest Time
5 PM

33AQI

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

25AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 PM to 5 PM (Avg. 33), while the lowest AQI was between 9 AM to 10 AM (Avg. 25).
Night time
Avg. Highest Time
6 PM

31AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM

26AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 6 PM (Avg. 31), while the lowest AQI was between 3 AM to 3 AM (Avg. 26).

2026 Days Vs Air Quality

Obu, Aichi, Japan

2026

85%

234

15%

40

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

Good
234 Days
Moderate
40 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 85%

Health Risk Level:

Low

In 2026, 85% 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

Obu, 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
14AQI (US)
2nd January 2026
12AQI (US)
3rd January 2026
12AQI (US)
4th January 2026
22AQI (US)
5th January 2026
46AQI (US)
6th January 2026
16AQI (US)
7th January 2026
36AQI (US)
8th January 2026
34AQI (US)
9th January 2026
16AQI (US)
10th January 2026
38AQI (US)
11th January 2026
36AQI (US)
12th January 2026
17AQI (US)
13th January 2026
44AQI (US)
14th January 2026
24AQI (US)
15th January 2026
48AQI (US)
16th January 2026
60AQI (US)
17th January 2026
63AQI (US)
18th January 2026
60AQI (US)
19th January 2026
72AQI (US)
20th January 2026
28AQI (US)
21st January 2026
12AQI (US)
22nd January 2026
16AQI (US)
23rd January 2026
36AQI (US)
24th January 2026
46AQI (US)
25th January 2026
44AQI (US)
26th January 2026
18AQI (US)
27th January 2026
42AQI (US)
28th January 2026
34AQI (US)
29th January 2026
31AQI (US)
30th January 2026
32AQI (US)
31st January 2026
33AQI (US)
1st February 2026
34AQI (US)
2nd February 2026
44AQI (US)
3rd February 2026
29AQI (US)
4th February 2026
38AQI (US)
5th February 2026
60AQI (US)
6th February 2026
58AQI (US)
7th February 2026
16AQI (US)
8th February 2026
28AQI (US)
9th February 2026
40AQI (US)
10th February 2026
49AQI (US)
11th February 2026
40AQI (US)
12th February 2026
56AQI (US)
13th February 2026
62AQI (US)
14th February 2026
70AQI (US)
15th February 2026
68AQI (US)
16th February 2026
54AQI (US)
17th February 2026
22AQI (US)
18th February 2026
28AQI (US)
19th February 2026
31AQI (US)
20th February 2026
40AQI (US)
21st February 2026
58AQI (US)
22nd February 2026
46AQI (US)
23rd February 2026
49AQI (US)
24th February 2026
56AQI (US)
25th February 2026
35AQI (US)
26th February 2026
24AQI (US)
27th February 2026
46AQI (US)
28th February 2026
28AQI (US)
1st March 2026
24AQI (US)
2nd March 2026
58AQI (US)
3rd March 2026
37AQI (US)
4th March 2026
10AQI (US)
5th March 2026
46AQI (US)
6th March 2026
48AQI (US)
7th March 2026
34AQI (US)
8th March 2026
46AQI (US)
9th March 2026
30AQI (US)
10th March 2026
53AQI (US)
11th March 2026
35AQI (US)
12th March 2026
32AQI (US)
13th March 2026
38AQI (US)
14th March 2026
44AQI (US)
15th March 2026
58AQI (US)
16th March 2026
52AQI (US)
17th March 2026
50AQI (US)
18th March 2026
62AQI (US)
19th March 2026
34AQI (US)
20th March 2026
48AQI (US)
21st March 2026
58AQI (US)
22nd March 2026
61AQI (US)
23rd March 2026
55AQI (US)
24th March 2026
47AQI (US)
25th March 2026
52AQI (US)
26th March 2026
15AQI (US)
27th March 2026
30AQI (US)
28th March 2026
62AQI (US)
29th March 2026
56AQI (US)
30th March 2026
49AQI (US)
31st March 2026
20AQI (US)
1st April 2026
21AQI (US)
2nd April 2026
41AQI (US)
3rd April 2026
54AQI (US)
4th April 2026
34AQI (US)
5th April 2026
21AQI (US)
6th April 2026
40AQI (US)
7th April 2026
40AQI (US)
8th April 2026
30AQI (US)
9th April 2026
30AQI (US)
10th April 2026
46AQI (US)
11th April 2026
44AQI (US)
12th April 2026
39AQI (US)
13th April 2026
47AQI (US)
14th April 2026
54AQI (US)
15th April 2026
31AQI (US)
16th April 2026
27AQI (US)
17th April 2026
37AQI (US)
18th April 2026
30AQI (US)
19th April 2026
31AQI (US)
20th April 2026
35AQI (US)
21st April 2026
48AQI (US)
22nd April 2026
45AQI (US)
23rd April 2026
40AQI (US)
24th April 2026
22AQI (US)
25th April 2026
42AQI (US)
26th April 2026
49AQI (US)
27th April 2026
49AQI (US)
28th April 2026
47AQI (US)
29th April 2026
50AQI (US)
30th April 2026
28AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
31AQI (US)
3rd May 2026
50AQI (US)
4th May 2026
27AQI (US)
5th May 2026
20AQI (US)
6th May 2026
25AQI (US)
7th May 2026
28AQI (US)
8th May 2026
27AQI (US)
9th May 2026
24AQI (US)
10th May 2026
29AQI (US)
11th May 2026
29AQI (US)
12th May 2026
32AQI (US)
13th May 2026
38AQI (US)
14th May 2026
33AQI (US)
15th May 2026
42AQI (US)
16th May 2026
84AQI (US)
17th May 2026
68AQI (US)
18th May 2026
53AQI (US)
19th May 2026
48AQI (US)
20th May 2026
62AQI (US)
21st May 2026
59AQI (US)
22nd May 2026
63AQI (US)
23rd May 2026
56AQI (US)
24th May 2026
60AQI (US)
25th May 2026
48AQI (US)
26th May 2026
40AQI (US)
27th May 2026
24AQI (US)
28th May 2026
24AQI (US)
29th May 2026
24AQI (US)
30th May 2026
24AQI (US)
31st May 2026
38AQI (US)
1st June 2026
32AQI (US)
2nd June 2026
22AQI (US)
3rd June 2026
25AQI (US)
4th June 2026
24AQI (US)
5th June 2026
22AQI (US)
6th June 2026
25AQI (US)
7th June 2026
21AQI (US)
8th June 2026
20AQI (US)
9th June 2026
22AQI (US)
10th June 2026
22AQI (US)
11th June 2026
25AQI (US)
12th June 2026
26AQI (US)
13th June 2026
42AQI (US)
14th June 2026
32AQI (US)
15th June 2026
20AQI (US)
16th June 2026
25AQI (US)
17th June 2026
24AQI (US)
18th June 2026
25AQI (US)
19th June 2026
32AQI (US)
20th June 2026
16AQI (US)
21st June 2026
18AQI (US)
22nd June 2026
18AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
21AQI (US)
25th June 2026
27AQI (US)
26th June 2026
29AQI (US)
27th June 2026
26AQI (US)
28th June 2026
32AQI (US)
29th June 2026
50AQI (US)
30th June 2026
62AQI (US)
1st July 2026
48AQI (US)
2nd July 2026
30AQI (US)
3rd July 2026
26AQI (US)
4th July 2026
22AQI (US)
5th July 2026
20AQI (US)
6th July 2026
20AQI (US)
7th July 2026
26AQI (US)
8th July 2026
24AQI (US)
9th July 2026
24AQI (US)
10th July 2026
24AQI (US)
11th July 2026
20AQI (US)
12th July 2026
28AQI (US)
13th July 2026
52AQI (US)
14th July 2026
31AQI (US)
15th July 2026
39AQI (US)
16th July 2026
53AQI (US)
17th July 2026
53AQI (US)
18th July 2026
45AQI (US)
19th July 2026
23AQI (US)
20th July 2026
33AQI (US)
21st July 2026
60AQI (US)
22nd July 2026
72AQI (US)
23rd July 2026
48AQI (US)
24th July 2026
45AQI (US)
25th July 2026
43AQI (US)
26th July 2026
40AQI (US)
27th July 2026
32AQI (US)
28th July 2026
32AQI (US)
29th July 2026
26AQI (US)
30th July 2026
50AQI (US)
31st July 2026
40AQI (US)
1st August 2026
38AQI (US)
2nd August 2026
50AQI (US)
3rd August 2026
43AQI (US)
4th August 2026
32AQI (US)
5th August 2026
36AQI (US)
6th August 2026
28AQI (US)
7th August 2026
24AQI (US)
8th August 2026
24AQI (US)
9th August 2026
26AQI (US)
10th August 2026
27AQI (US)
11th August 2026
26AQI (US)
12th August 2026
24AQI (US)
13th August 2026
28AQI (US)
14th August 2026
26AQI (US)
15th August 2026
20AQI (US)
16th August 2026
23AQI (US)
17th August 2026
24AQI (US)
18th August 2026
25AQI (US)
19th August 2026
25AQI (US)
20th August 2026
25AQI (US)
21st August 2026
28AQI (US)
22nd August 2026
32AQI (US)
23rd August 2026
30AQI (US)
24th August 2026
32AQI (US)
25th August 2026
34AQI (US)
26th August 2026
34AQI (US)
27th August 2026
23AQI (US)
28th August 2026
23AQI (US)
29th August 2026
30AQI (US)
30th August 2026
35AQI (US)
31st August 2026
35AQI (US)
1st September 2026
34AQI (US)
2nd September 2026
24AQI (US)
3rd September 2026
24AQI (US)
4th September 2026
24AQI (US)
5th September 2026
25AQI (US)
6th September 2026
24AQI (US)
7th September 2026
24AQI (US)
8th September 2026
26AQI (US)
9th September 2026
28AQI (US)
10th September 2026
25AQI (US)
11th September 2026
24AQI (US)
12th September 2026
37AQI (US)
13th September 2026
12AQI (US)
14th September 2026
18AQI (US)
15th September 2026
25AQI (US)
16th September 2026
26AQI (US)
17th September 2026
26AQI (US)
18th September 2026
32AQI (US)
19th September 2026
49AQI (US)
20th September 2026
27AQI (US)
21st September 2026
20AQI (US)
22nd September 2026
30AQI (US)
23rd September 2026
33AQI (US)
24th September 2026
31AQI (US)
25th September 2026
34AQI (US)
26th September 2026
39AQI (US)
27th September 2026
32AQI (US)
28th September 2026
24AQI (US)
29th September 2026
24AQI (US)
30th September 2026
26AQI (US)
1st October 2026
28AQI (US)
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

34AQI (US)

43AQI (US)

43AQI (US)

38AQI (US)

40AQI (US)

27AQI (US)

36AQI (US)

29AQI (US)

28AQI (US)

28AQI (US)

No. of days

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

202635AQI (US)

27
4
19
9
20
11
28
2
23
8
29
1
26
5
31
30
1
234
40

Highest AQI (US) recorded in

February

43AQI (US)

Lowest AQI (US) recorded in

June

27AQI (US)

202535AQI (US)

31
28
28
3
30
31
30
18
13
21
10
30
22
9
21
9
24
7
314
51

Highest AQI (US) recorded in

July

48AQI (US)

Lowest AQI (US) recorded in

June

22AQI (US)

202432AQI (US)

31
28
1
27
4
26
4
30
1
30
30
1
31
30
31
30
31
355
11

Highest AQI (US) recorded in

April

43AQI (US)

Lowest AQI (US) recorded in

December

25AQI (US)

202333AQI (US)

30
1
28
30
1
28
2
29
2
28
2
29
2
31
30
31
25
4
30
1
349
15

Highest AQI (US) recorded in

April

42AQI (US)

Lowest AQI (US) recorded in

August

22AQI (US)

202231AQI (US)

31
21
28
3
15
3
31
30
21
2
29
31
29
1
31
299
7

Highest AQI (US) recorded in

March

40AQI (US)

Lowest AQI (US) recorded in

August

17AQI (US)

202125AQI (US)

31
28
30
1
30
31
25
5
31
31
30
31
29
1
31
358
7

Highest AQI (US) recorded in

June

39AQI (US)

Lowest AQI (US) recorded in

January

16AQI (US)

202016AQI (US)

13
21
18
30
31
31
19
31
30
31
255

Highest AQI (US) recorded in

August

22AQI (US)

Lowest AQI (US) recorded in

December

14AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
35AQI (US)
Least Polluted Year Recorded
2020(Avg.)
16AQI (US)

Obu's annual 2026 AQI (US) (35) shows an average percentage change of 31.1% (worsened AQI (US)) compared to previous years: 2020 (16), 2021 (25), 2022 (31), 2023 (33), 2024 (32), 2025 (35).