Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Chuo, Soja, Okayama, 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+

July Air Quality Analysis

Chuo, Soja, Okayama, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
26th Jul 2022
115AQI
Lowest AQI recorded on
2nd Jul 2026
11AQI

Same Day Analysis (31st July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 32 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 30th Jul - 31st Jul 2026

Chuo, Soja, Okayama, Japan

AQI
Day
Night
.

5 AM30th Jul 2026

7 PM

4 AM31st Jul 2026

Day time
Avg. Highest Time
11AM30th Jul

46AQI

Avg. Lowest Time
7PM30th Jul

42AQI

Night time
Avg. Highest Time
10PM30th Jul

46AQI

Avg. Lowest Time
4AM31st Jul

33AQI

In the last 24 hours,

Chuo's AQI reached its highest point of 46 at 11 AM during the Day, while the lowest point, 33, was recorded at 4 AM during the Night between 30th Jul and 31st Jul 2026.

Day & Night AQI Trend : Jul 2026

Chuo, Soja, Okayama, Japan

Jul
02nd - 03rd03rd - 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 - 31st31st
Day
Night
2nd Jul 2026175 AMAQI
2nd Jul 2026176 AMAQI
2nd Jul 2026177 AMAQI
2nd Jul 202648 AMAQI
2nd Jul 202669 AMAQI
2nd Jul 2026810 AMAQI
2nd Jul 2026811 AMAQI
2nd Jul 2026812 PMAQI
2nd Jul 202661 PMAQI
2nd Jul 202682 PMAQI
2nd Jul 202683 PMAQI
2nd Jul 202684 PMAQI
2nd Jul 202685 PMAQI
2nd Jul 202686 PMAQI
2nd Jul 202687 PMAQI
2nd Jul 202688 PMAQI
2nd Jul 202689 PMAQI
2nd Jul 20261410 PMAQI
2nd Jul 20261711 PMAQI
3rd Jul 2026812 AMAQI
3rd Jul 202681 AMAQI
3rd Jul 2026122 AMAQI
3rd Jul 2026173 AMAQI
3rd Jul 2026194 AMAQI

23°C19/28°C

3rd Jul 2026175 AMAQI
3rd Jul 2026216 AMAQI
3rd Jul 2026277 AMAQI
3rd Jul 2026258 AMAQI
3rd Jul 2026219 AMAQI
3rd Jul 20262310 AMAQI
3rd Jul 20262111 AMAQI
3rd Jul 20262112 PMAQI
3rd Jul 2026211 PMAQI
3rd Jul 2026252 PMAQI
3rd Jul 2026263 PMAQI
3rd Jul 2026264 PMAQI
3rd Jul 2026245 PMAQI
3rd Jul 2026246 PMAQI
3rd Jul 2026267 PMAQI
3rd Jul 2026268 PMAQI
3rd Jul 2026249 PMAQI
3rd Jul 20262610 PMAQI
3rd Jul 20262911 PMAQI
4th Jul 20262612 AMAQI
4th Jul 2026291 AMAQI
4th Jul 2026302 AMAQI
4th Jul 2026263 AMAQI
4th Jul 2026254 AMAQI

22°C16/28°C

4th Jul 2026285 AMAQI
4th Jul 2026266 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026258 AMAQI
4th Jul 2026269 AMAQI
4th Jul 20262510 AMAQI
4th Jul 20262311 AMAQI
4th Jul 20262612 PMAQI
4th Jul 2026221 PMAQI
4th Jul 2026252 PMAQI
4th Jul 2026263 PMAQI
4th Jul 2026234 PMAQI
4th Jul 2026265 PMAQI
4th Jul 2026236 PMAQI
4th Jul 2026237 PMAQI
4th Jul 2026228 PMAQI
4th Jul 2026239 PMAQI
4th Jul 20261610 PMAQI
4th Jul 20262211 PMAQI
5th Jul 20261612 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026222 AMAQI
5th Jul 2026223 AMAQI
5th Jul 2026204 AMAQI

20°C20/21°C

5th Jul 2026225 AMAQI
5th Jul 2026216 AMAQI
5th Jul 2026227 AMAQI
5th Jul 2026208 AMAQI
5th Jul 202689 AMAQI
5th Jul 20261810 AMAQI
5th Jul 20261811 AMAQI
5th Jul 20261912 PMAQI
5th Jul 2026181 PMAQI
5th Jul 2026212 PMAQI
5th Jul 2026283 PMAQI
5th Jul 2026254 PMAQI
5th Jul 2026235 PMAQI
5th Jul 2026226 PMAQI
5th Jul 2026227 PMAQI
5th Jul 2026208 PMAQI
5th Jul 2026229 PMAQI
5th Jul 20262110 PMAQI
5th Jul 20262211 PMAQI
6th Jul 20262412 AMAQI
6th Jul 2026241 AMAQI
6th Jul 2026242 AMAQI
6th Jul 2026243 AMAQI
6th Jul 2026224 AMAQI

22°C21/23°C

6th Jul 2026175 AMAQI
6th Jul 2026166 AMAQI
6th Jul 2026247 AMAQI
6th Jul 2026228 AMAQI
6th Jul 2026199 AMAQI
6th Jul 20262410 AMAQI
6th Jul 20263611 AMAQI
6th Jul 20261312 PMAQI
6th Jul 2026181 PMAQI
6th Jul 2026202 PMAQI
6th Jul 2026203 PMAQI
6th Jul 2026234 PMAQI
6th Jul 2026205 PMAQI
6th Jul 2026196 PMAQI
6th Jul 2026227 PMAQI
6th Jul 2026258 PMAQI
6th Jul 2026269 PMAQI
6th Jul 20262710 PMAQI
6th Jul 20262811 PMAQI
7th Jul 20263012 AMAQI
7th Jul 2026301 AMAQI
7th Jul 2026282 AMAQI
7th Jul 2026293 AMAQI
7th Jul 2026254 AMAQI

22°C21/26°C

7th Jul 2026285 AMAQI
7th Jul 2026266 AMAQI
7th Jul 2026267 AMAQI
7th Jul 2026288 AMAQI
7th Jul 2026259 AMAQI
7th Jul 20262410 AMAQI
7th Jul 20262211 AMAQI
7th Jul 20262212 PMAQI
7th Jul 2026201 PMAQI
7th Jul 2026262 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026264 PMAQI
7th Jul 2026285 PMAQI
7th Jul 2026276 PMAQI
7th Jul 2026297 PMAQI
7th Jul 2026288 PMAQI
7th Jul 2026289 PMAQI
7th Jul 20262810 PMAQI
7th Jul 20262511 PMAQI
8th Jul 20262612 AMAQI
8th Jul 2026301 AMAQI
8th Jul 2026262 AMAQI
8th Jul 2026283 AMAQI
8th Jul 2026274 AMAQI

24°C22/29°C

8th Jul 2026285 AMAQI
8th Jul 2026286 AMAQI
8th Jul 2026277 AMAQI
8th Jul 2026308 AMAQI
8th Jul 2026279 AMAQI
8th Jul 20262610 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262212 PMAQI
8th Jul 2026221 PMAQI
8th Jul 2026262 PMAQI
8th Jul 2026263 PMAQI
8th Jul 2026304 PMAQI
8th Jul 2026235 PMAQI
8th Jul 2026246 PMAQI
8th Jul 2026207 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026219 PMAQI
8th Jul 20262410 PMAQI
8th Jul 20262611 PMAQI
9th Jul 20262812 AMAQI
9th Jul 2026301 AMAQI
9th Jul 2026302 AMAQI
9th Jul 2026293 AMAQI
9th Jul 2026274 AMAQI

25°C22/28°C

9th Jul 2026265 AMAQI
9th Jul 2026276 AMAQI
9th Jul 2026287 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026259 AMAQI
9th Jul 20262410 AMAQI
9th Jul 20262411 AMAQI
9th Jul 20262212 PMAQI
9th Jul 2026221 PMAQI
9th Jul 2026242 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026264 PMAQI
9th Jul 2026245 PMAQI
9th Jul 2026266 PMAQI
9th Jul 2026237 PMAQI
9th Jul 2026248 PMAQI
9th Jul 2026249 PMAQI
9th Jul 20262710 PMAQI
9th Jul 20262811 PMAQI
10th Jul 20262712 AMAQI
10th Jul 2026281 AMAQI
10th Jul 2026302 AMAQI
10th Jul 2026253 AMAQI
10th Jul 2026264 AMAQI

25°C21/29°C

10th Jul 2026285 AMAQI
10th Jul 2026286 AMAQI
10th Jul 2026267 AMAQI
10th Jul 2026268 AMAQI
10th Jul 2026289 AMAQI
10th Jul 20262910 AMAQI
10th Jul 20262811 AMAQI
10th Jul 20262812 PMAQI
10th Jul 2026251 PMAQI
10th Jul 2026222 PMAQI
10th Jul 2026243 PMAQI
10th Jul 2026264 PMAQI
10th Jul 2026285 PMAQI
10th Jul 2026296 PMAQI
10th Jul 2026307 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026319 PMAQI
10th Jul 20263210 PMAQI
10th Jul 20263211 PMAQI
11th Jul 20263212 AMAQI
11th Jul 2026321 AMAQI
11th Jul 2026322 AMAQI
11th Jul 2026323 AMAQI
11th Jul 2026264 AMAQI

25°C20/31°C

11th Jul 2026305 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026307 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026309 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20262611 AMAQI
11th Jul 20262812 PMAQI
11th Jul 2026241 PMAQI
11th Jul 2026262 PMAQI
11th Jul 2026223 PMAQI
11th Jul 2026274 PMAQI
11th Jul 2026335 PMAQI
11th Jul 2026336 PMAQI
11th Jul 2026327 PMAQI
11th Jul 2026288 PMAQI
11th Jul 2026299 PMAQI
11th Jul 20263010 PMAQI
11th Jul 20263211 PMAQI
12th Jul 20263112 AMAQI
12th Jul 2026321 AMAQI
12th Jul 2026312 AMAQI
12th Jul 2026293 AMAQI
12th Jul 2026274 AMAQI

26°C21/32°C

12th Jul 2026295 AMAQI
12th Jul 2026296 AMAQI
12th Jul 2026297 AMAQI
12th Jul 2026288 AMAQI
12th Jul 2026289 AMAQI
12th Jul 20263010 AMAQI
12th Jul 20262511 AMAQI
12th Jul 20262512 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026232 PMAQI
12th Jul 2026253 PMAQI
12th Jul 2026244 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026327 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20263011 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026321 AMAQI
13th Jul 2026322 AMAQI
13th Jul 2026303 AMAQI
13th Jul 2026284 AMAQI

27°C21/33°C

13th Jul 2026315 AMAQI
13th Jul 2026296 AMAQI
13th Jul 2026287 AMAQI
13th Jul 2026298 AMAQI
13th Jul 2026289 AMAQI
13th Jul 20262810 AMAQI
13th Jul 20262711 AMAQI
13th Jul 20262912 PMAQI
13th Jul 2026241 PMAQI
13th Jul 2026232 PMAQI
13th Jul 2026243 PMAQI
13th Jul 2026304 PMAQI
13th Jul 2026365 PMAQI
13th Jul 2026356 PMAQI
13th Jul 2026327 PMAQI
13th Jul 2026328 PMAQI
13th Jul 2026369 PMAQI
13th Jul 20263610 PMAQI
13th Jul 20264111 PMAQI
14th Jul 20263412 AMAQI
14th Jul 2026341 AMAQI
14th Jul 2026362 AMAQI
14th Jul 2026343 AMAQI
14th Jul 2026314 AMAQI

28°C23/34°C

14th Jul 2026315 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026317 AMAQI
14th Jul 2026298 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262412 PMAQI
14th Jul 2026231 PMAQI
14th Jul 2026242 PMAQI
14th Jul 2026243 PMAQI
14th Jul 2026264 PMAQI
14th Jul 2026315 PMAQI
14th Jul 2026346 PMAQI
14th Jul 2026317 PMAQI
14th Jul 2026348 PMAQI
14th Jul 2026369 PMAQI
14th Jul 20263210 PMAQI
14th Jul 20263611 PMAQI
15th Jul 20263412 AMAQI
15th Jul 2026341 AMAQI
15th Jul 2026322 AMAQI
15th Jul 2026313 AMAQI
15th Jul 2026264 AMAQI

28°C23/34°C

15th Jul 2026305 AMAQI
15th Jul 2026276 AMAQI
15th Jul 2026307 AMAQI
15th Jul 2026308 AMAQI
15th Jul 2026309 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20262411 AMAQI
15th Jul 20262312 PMAQI
15th Jul 2026201 PMAQI
15th Jul 2026212 PMAQI
15th Jul 2026183 PMAQI
15th Jul 2026174 PMAQI
15th Jul 2026195 PMAQI
15th Jul 2026216 PMAQI
15th Jul 2026187 PMAQI
15th Jul 2026258 PMAQI
15th Jul 2026219 PMAQI
15th Jul 20262310 PMAQI
15th Jul 20262311 PMAQI
16th Jul 20262212 AMAQI
16th Jul 2026231 AMAQI
16th Jul 2026252 AMAQI
16th Jul 2026293 AMAQI
16th Jul 2026254 AMAQI

27°C22/31°C

16th Jul 2026215 AMAQI
16th Jul 2026216 AMAQI
16th Jul 2026217 AMAQI
16th Jul 2026228 AMAQI
16th Jul 2026249 AMAQI
16th Jul 20262910 AMAQI
16th Jul 20262911 AMAQI
16th Jul 20262912 PMAQI
16th Jul 2026331 PMAQI
16th Jul 2026332 PMAQI
16th Jul 2026423 PMAQI
16th Jul 2026244 PMAQI
16th Jul 2026265 PMAQI
16th Jul 2026286 PMAQI
16th Jul 2026277 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026309 PMAQI
16th Jul 20263010 PMAQI
16th Jul 20263011 PMAQI
17th Jul 20263012 AMAQI
17th Jul 2026301 AMAQI
17th Jul 2026292 AMAQI
17th Jul 2026283 AMAQI
17th Jul 2026424 AMAQI

28°C23/34°C

17th Jul 2026525 AMAQI
17th Jul 2026506 AMAQI
17th Jul 2026517 AMAQI
17th Jul 2026518 AMAQI
17th Jul 2026519 AMAQI
17th Jul 20265210 AMAQI
17th Jul 20264911 AMAQI
17th Jul 20264812 PMAQI
17th Jul 2026391 PMAQI
17th Jul 2026292 PMAQI
17th Jul 2026263 PMAQI
17th Jul 2026594 PMAQI
17th Jul 2026635 PMAQI
17th Jul 2026646 PMAQI
17th Jul 2026697 PMAQI
17th Jul 2026658 PMAQI
17th Jul 2026599 PMAQI
17th Jul 20266710 PMAQI
17th Jul 20265811 PMAQI
18th Jul 20265812 AMAQI
18th Jul 2026521 AMAQI
18th Jul 2026532 AMAQI
18th Jul 2026563 AMAQI
18th Jul 2026554 AMAQI

28°C22/34°C

18th Jul 2026565 AMAQI
18th Jul 2026556 AMAQI
18th Jul 2026567 AMAQI
18th Jul 2026578 AMAQI
18th Jul 2026599 AMAQI
18th Jul 20265610 AMAQI
18th Jul 20265911 AMAQI
18th Jul 20265812 PMAQI
18th Jul 2026591 PMAQI
18th Jul 2026602 PMAQI
18th Jul 2026633 PMAQI
18th Jul 2026704 PMAQI
18th Jul 2026705 PMAQI
18th Jul 2026676 PMAQI
18th Jul 2026687 PMAQI
18th Jul 2026638 PMAQI
18th Jul 2026669 PMAQI
18th Jul 20266510 PMAQI
18th Jul 20266311 PMAQI
19th Jul 20266412 AMAQI
19th Jul 2026631 AMAQI
19th Jul 2026622 AMAQI
19th Jul 2026593 AMAQI
19th Jul 2026584 AMAQI

28°C23/33°C

19th Jul 2026595 AMAQI
19th Jul 2026586 AMAQI
19th Jul 2026597 AMAQI
19th Jul 2026578 AMAQI
19th Jul 2026559 AMAQI
19th Jul 20265310 AMAQI
19th Jul 20265311 AMAQI
19th Jul 20265812 PMAQI
19th Jul 2026561 PMAQI
19th Jul 2026562 PMAQI
19th Jul 2026553 PMAQI
19th Jul 2026564 PMAQI
19th Jul 2026525 PMAQI
19th Jul 2026516 PMAQI
19th Jul 2026517 PMAQI
19th Jul 2026518 PMAQI
19th Jul 2026539 PMAQI
19th Jul 20265210 PMAQI
19th Jul 20265311 PMAQI
20th Jul 20264912 AMAQI
20th Jul 2026481 AMAQI
20th Jul 2026512 AMAQI
20th Jul 2026483 AMAQI
20th Jul 2026514 AMAQI

28°C24/33°C

20th Jul 2026515 AMAQI
20th Jul 2026526 AMAQI
20th Jul 2026517 AMAQI
20th Jul 2026468 AMAQI
20th Jul 2026469 AMAQI
20th Jul 20264910 AMAQI
20th Jul 20265411 AMAQI
20th Jul 20265712 PMAQI
20th Jul 2026601 PMAQI
20th Jul 2026652 PMAQI
20th Jul 2026643 PMAQI
20th Jul 2026644 PMAQI
20th Jul 2026665 PMAQI
20th Jul 2026666 PMAQI
20th Jul 2026667 PMAQI
20th Jul 2026648 PMAQI
20th Jul 2026669 PMAQI
20th Jul 20266610 PMAQI
20th Jul 20266511 PMAQI
21st Jul 20267112 AMAQI
21st Jul 2026721 AMAQI
21st Jul 2026712 AMAQI
21st Jul 2026713 AMAQI
21st Jul 2026694 AMAQI

28°C24/33°C

21st Jul 2026685 AMAQI
21st Jul 2026696 AMAQI
21st Jul 2026707 AMAQI
21st Jul 2026658 AMAQI
21st Jul 2026709 AMAQI
21st Jul 20266710 AMAQI
21st Jul 20266711 AMAQI
21st Jul 2026781 PMAQI
21st Jul 2026972 PMAQI
21st Jul 20261003 PMAQI
21st Jul 20261054 PMAQI
21st Jul 2026985 PMAQI
21st Jul 2026906 PMAQI
21st Jul 20261117 PMAQI
21st Jul 2026828 PMAQI
21st Jul 2026719 PMAQI
21st Jul 20266610 PMAQI
21st Jul 20266211 PMAQI
22nd Jul 20266212 AMAQI
22nd Jul 2026621 AMAQI
22nd Jul 2026682 AMAQI
22nd Jul 2026723 AMAQI
22nd Jul 2026684 AMAQI

28°C24/34°C

22nd Jul 2026625 AMAQI
22nd Jul 2026576 AMAQI
22nd Jul 2026657 AMAQI
22nd Jul 2026678 AMAQI
22nd Jul 2026629 AMAQI
22nd Jul 20266910 AMAQI
22nd Jul 20267011 AMAQI
22nd Jul 20268612 PMAQI
22nd Jul 2026951 PMAQI
22nd Jul 2026902 PMAQI
22nd Jul 2026923 PMAQI
22nd Jul 20261084 PMAQI
22nd Jul 20261055 PMAQI
22nd Jul 20261126 PMAQI
22nd Jul 20261107 PMAQI
22nd Jul 2026988 PMAQI
22nd Jul 2026899 PMAQI
22nd Jul 20269210 PMAQI
22nd Jul 20267811 PMAQI
23rd Jul 20266912 AMAQI
23rd Jul 2026651 AMAQI
23rd Jul 2026902 AMAQI
23rd Jul 2026813 AMAQI
23rd Jul 2026674 AMAQI

29°C24/35°C

23rd Jul 2026645 AMAQI
23rd Jul 2026606 AMAQI
23rd Jul 2026557 AMAQI
23rd Jul 2026528 AMAQI
23rd Jul 2026519 AMAQI
23rd Jul 20265110 AMAQI
23rd Jul 20265111 AMAQI
23rd Jul 20265212 PMAQI
23rd Jul 2026531 PMAQI
23rd Jul 2026522 PMAQI
23rd Jul 2026603 PMAQI
23rd Jul 2026674 PMAQI
23rd Jul 2026665 PMAQI
23rd Jul 2026696 PMAQI
23rd Jul 2026767 PMAQI
23rd Jul 2026688 PMAQI
23rd Jul 2026639 PMAQI
23rd Jul 20266610 PMAQI
23rd Jul 20267411 PMAQI
24th Jul 20265212 AMAQI
24th Jul 2026311 AMAQI
24th Jul 2026292 AMAQI
24th Jul 2026293 AMAQI
24th Jul 2026294 AMAQI

29°C24/36°C

24th Jul 2026315 AMAQI
24th Jul 2026276 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026318 AMAQI
24th Jul 2026299 AMAQI
24th Jul 20264010 AMAQI
24th Jul 20263611 AMAQI
24th Jul 20264212 PMAQI
24th Jul 2026521 PMAQI
24th Jul 2026622 PMAQI
24th Jul 2026733 PMAQI
24th Jul 2026714 PMAQI
24th Jul 2026605 PMAQI
24th Jul 2026536 PMAQI
24th Jul 2026527 PMAQI
24th Jul 2026578 PMAQI
24th Jul 2026509 PMAQI
24th Jul 20264610 PMAQI
24th Jul 20264611 PMAQI
25th Jul 20263612 AMAQI
25th Jul 2026311 AMAQI
25th Jul 2026382 AMAQI
25th Jul 2026363 AMAQI
25th Jul 2026274 AMAQI

29°C24/36°C

25th Jul 2026335 AMAQI
25th Jul 2026336 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026339 AMAQI
25th Jul 20265010 AMAQI
25th Jul 20264811 AMAQI
25th Jul 20264412 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026522 PMAQI
25th Jul 2026583 PMAQI
25th Jul 2026674 PMAQI
25th Jul 2026575 PMAQI
25th Jul 2026426 PMAQI
25th Jul 2026487 PMAQI
25th Jul 2026508 PMAQI
25th Jul 2026509 PMAQI
25th Jul 20265010 PMAQI
25th Jul 20264011 PMAQI
26th Jul 20264012 AMAQI
26th Jul 2026331 AMAQI
26th Jul 2026312 AMAQI
26th Jul 2026313 AMAQI
26th Jul 2026334 AMAQI

28°C23/36°C

26th Jul 2026335 AMAQI
26th Jul 2026296 AMAQI
26th Jul 2026297 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262510 AMAQI
26th Jul 20263111 AMAQI
26th Jul 20263312 PMAQI
26th Jul 2026381 PMAQI
26th Jul 2026402 PMAQI
26th Jul 2026553 PMAQI
26th Jul 2026544 PMAQI
26th Jul 2026555 PMAQI
26th Jul 2026536 PMAQI
26th Jul 2026507 PMAQI
26th Jul 2026388 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20263610 PMAQI
26th Jul 20263111 PMAQI
27th Jul 20263312 AMAQI
27th Jul 2026381 AMAQI
27th Jul 2026362 AMAQI
27th Jul 2026383 AMAQI
27th Jul 2026314 AMAQI

28°C23/36°C

27th Jul 2026365 AMAQI
27th Jul 2026336 AMAQI
27th Jul 2026337 AMAQI
27th Jul 2026388 AMAQI
27th Jul 2026339 AMAQI
27th Jul 20263310 AMAQI
27th Jul 20263811 AMAQI
27th Jul 20263612 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026362 PMAQI
27th Jul 2026383 PMAQI
27th Jul 2026364 PMAQI
27th Jul 2026425 PMAQI
27th Jul 2026546 PMAQI
27th Jul 2026427 PMAQI
27th Jul 2026528 PMAQI
27th Jul 2026519 PMAQI
27th Jul 20264810 PMAQI
27th Jul 20264011 PMAQI
28th Jul 20264812 AMAQI
28th Jul 2026501 AMAQI
28th Jul 2026482 AMAQI
28th Jul 2026513 AMAQI
28th Jul 2026484 AMAQI

29°C23/35°C

28th Jul 2026495 AMAQI
28th Jul 2026506 AMAQI
28th Jul 2026517 AMAQI
28th Jul 2026518 AMAQI
28th Jul 2026489 AMAQI
28th Jul 20264610 AMAQI
28th Jul 20265111 AMAQI
28th Jul 20265312 PMAQI
28th Jul 2026421 PMAQI
28th Jul 2026462 PMAQI
28th Jul 2026333 PMAQI
28th Jul 2026314 PMAQI
28th Jul 2026335 PMAQI
28th Jul 2026366 PMAQI
28th Jul 2026367 PMAQI
28th Jul 2026338 PMAQI
28th Jul 2026389 PMAQI
28th Jul 20263810 PMAQI
28th Jul 20263611 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026381 AMAQI
29th Jul 2026422 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026364 AMAQI

28°C23/35°C

29th Jul 2026385 AMAQI
29th Jul 2026366 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026338 AMAQI
29th Jul 2026369 AMAQI
29th Jul 20263110 AMAQI
29th Jul 20263311 AMAQI
29th Jul 20263312 PMAQI
29th Jul 2026361 PMAQI
29th Jul 2026332 PMAQI
29th Jul 2026383 PMAQI
29th Jul 2026404 PMAQI
29th Jul 2026385 PMAQI
29th Jul 2026406 PMAQI
29th Jul 2026427 PMAQI
29th Jul 2026408 PMAQI
29th Jul 2026409 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20264211 PMAQI
30th Jul 20263812 AMAQI
30th Jul 2026401 AMAQI
30th Jul 2026422 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026464 AMAQI

26°C22/31°C

30th Jul 2026425 AMAQI
30th Jul 2026446 AMAQI
30th Jul 2026427 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026429 AMAQI
30th Jul 20264410 AMAQI
30th Jul 20264611 AMAQI
30th Jul 20264612 PMAQI
30th Jul 2026421 PMAQI
30th Jul 2026422 PMAQI
30th Jul 2026443 PMAQI
30th Jul 2026424 PMAQI
30th Jul 2026445 PMAQI
30th Jul 2026466 PMAQI
30th Jul 2026427 PMAQI
30th Jul 2026448 PMAQI
30th Jul 2026449 PMAQI
30th Jul 20264610 PMAQI
30th Jul 20264211 PMAQI
31st Jul 20263812 AMAQI
31st Jul 2026381 AMAQI
31st Jul 2026362 AMAQI
31st Jul 2026363 AMAQI
31st Jul 2026334 AMAQI

29°C23/36°C

31st Jul 2026315 AMAQI
5 AM
31st Jul 2026316 AMAQI
31st Jul 2026297 AMAQI
31st Jul 2026318 AMAQI
31st Jul 2026319 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20262711 AMAQI
31st Jul 20262912 PMAQI
12 PM
31st Jul 2026311 PMAQI
31st Jul 2026292 PMAQI
31st Jul 2026313 PMAQI
31st Jul 2026334 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026296 PMAQI
31st Jul 2026337 PMAQI
7 PM
31st Jul 2026298 PMAQI
31st Jul 2026339 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20263311 PMAQI
12 AM
4 AM

28°C21/36°C

Day time
Avg. Highest Time
4 PM - 7 PM

42AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
5 AM - 9 AM

35AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 7 PM (Avg. 42), while the lowest AQI was between 5 AM to 9 AM (Avg. 35).
Night time
Avg. Highest Time
8 PM - 11 PM

40AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM

35AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 40), while the lowest AQI was between 4 AM to 4 AM (Avg. 35).

2026 Days Vs Air Quality

Chuo, Soja, Okayama, Japan

2026

75%

159

25%

53

Total number of days with different AQI categories in last 212 days in 2026 (153 days remaining)

Good
159 Days
Moderate
53 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 75%

Health Risk Level:

Low

In 2026, 75% of 212 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

Chuo, Soja, Okayama, 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
27AQI (US)
2nd January 2026
25AQI (US)
3rd January 2026
22AQI (US)
4th January 2026
41AQI (US)
5th January 2026
46AQI (US)
6th January 2026
33AQI (US)
7th January 2026
51AQI (US)
8th January 2026
35AQI (US)
9th January 2026
34AQI (US)
10th January 2026
49AQI (US)
11th January 2026
36AQI (US)
12th January 2026
30AQI (US)
13th January 2026
37AQI (US)
14th January 2026
27AQI (US)
15th January 2026
46AQI (US)
16th January 2026
73AQI (US)
17th January 2026
77AQI (US)
18th January 2026
59AQI (US)
19th January 2026
56AQI (US)
20th January 2026
24AQI (US)
21st January 2026
13AQI (US)
22nd January 2026
25AQI (US)
23rd January 2026
37AQI (US)
24th January 2026
43AQI (US)
25th January 2026
42AQI (US)
26th January 2026
29AQI (US)
27th January 2026
41AQI (US)
28th January 2026
29AQI (US)
29th January 2026
19AQI (US)
30th January 2026
37AQI (US)
31st January 2026
33AQI (US)
1st February 2026
41AQI (US)
2nd February 2026
44AQI (US)
3rd February 2026
25AQI (US)
4th February 2026
40AQI (US)
5th February 2026
51AQI (US)
6th February 2026
49AQI (US)
7th February 2026
18AQI (US)
8th February 2026
14AQI (US)
9th February 2026
34AQI (US)
10th February 2026
41AQI (US)
11th February 2026
48AQI (US)
12th February 2026
51AQI (US)
13th February 2026
54AQI (US)
14th February 2026
72AQI (US)
15th February 2026
76AQI (US)
16th February 2026
54AQI (US)
17th February 2026
20AQI (US)
18th February 2026
29AQI (US)
19th February 2026
38AQI (US)
20th February 2026
42AQI (US)
21st February 2026
66AQI (US)
22nd February 2026
57AQI (US)
23rd February 2026
50AQI (US)
24th February 2026
45AQI (US)
25th February 2026
13AQI (US)
26th February 2026
11AQI (US)
27th February 2026
49AQI (US)
28th February 2026
20AQI (US)
1st March 2026
36AQI (US)
2nd March 2026
62AQI (US)
3rd March 2026
38AQI (US)
4th March 2026
51AQI (US)
5th March 2026
51AQI (US)
6th March 2026
56AQI (US)
7th March 2026
37AQI (US)
8th March 2026
18AQI (US)
9th March 2026
46AQI (US)
10th March 2026
58AQI (US)
11th March 2026
57AQI (US)
12th March 2026
60AQI (US)
13th March 2026
36AQI (US)
14th March 2026
44AQI (US)
15th March 2026
58AQI (US)
16th March 2026
45AQI (US)
17th March 2026
48AQI (US)
18th March 2026
50AQI (US)
19th March 2026
54AQI (US)
20th March 2026
59AQI (US)
21st March 2026
49AQI (US)
22nd March 2026
60AQI (US)
23rd March 2026
58AQI (US)
24th March 2026
51AQI (US)
25th March 2026
47AQI (US)
26th March 2026
17AQI (US)
27th March 2026
41AQI (US)
28th March 2026
72AQI (US)
29th March 2026
77AQI (US)
30th March 2026
78AQI (US)
31st March 2026
18AQI (US)
1st April 2026
13AQI (US)
2nd April 2026
53AQI (US)
3rd April 2026
56AQI (US)
4th April 2026
35AQI (US)
5th April 2026
21AQI (US)
6th April 2026
51AQI (US)
7th April 2026
36AQI (US)
8th April 2026
41AQI (US)
9th April 2026
33AQI (US)
10th April 2026
46AQI (US)
11th April 2026
42AQI (US)
12th April 2026
37AQI (US)
13th April 2026
38AQI (US)
14th April 2026
41AQI (US)
15th April 2026
34AQI (US)
16th April 2026
34AQI (US)
17th April 2026
36AQI (US)
18th April 2026
31AQI (US)
19th April 2026
32AQI (US)
20th April 2026
30AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
42AQI (US)
23rd April 2026
30AQI (US)
24th April 2026
26AQI (US)
25th April 2026
46AQI (US)
26th April 2026
49AQI (US)
27th April 2026
51AQI (US)
28th April 2026
52AQI (US)
29th April 2026
38AQI (US)
30th April 2026
25AQI (US)
1st May 2026
48AQI (US)
2nd May 2026
55AQI (US)
3rd May 2026
55AQI (US)
4th May 2026
22AQI (US)
5th May 2026
20AQI (US)
6th May 2026
28AQI (US)
7th May 2026
37AQI (US)
8th May 2026
38AQI (US)
9th May 2026
22AQI (US)
10th May 2026
30AQI (US)
11th May 2026
33AQI (US)
12th May 2026
40AQI (US)
13th May 2026
36AQI (US)
14th May 2026
32AQI (US)
15th May 2026
33AQI (US)
16th May 2026
78AQI (US)
17th May 2026
64AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
62AQI (US)
21st May 2026
64AQI (US)
22nd May 2026
68AQI (US)
23rd May 2026
61AQI (US)
24th May 2026
64AQI (US)
25th May 2026
54AQI (US)
26th May 2026
40AQI (US)
27th May 2026
16AQI (US)
28th May 2026
30AQI (US)
29th May 2026
29AQI (US)
30th May 2026
25AQI (US)
31st May 2026
44AQI (US)
1st June 2026
47AQI (US)
2nd June 2026
15AQI (US)
3rd June 2026
13AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
21AQI (US)
8th June 2026
21AQI (US)
9th June 2026
27AQI (US)
10th June 2026
22AQI (US)
11th June 2026
26AQI (US)
12th June 2026
26AQI (US)
13th June 2026
28AQI (US)
14th June 2026
24AQI (US)
15th June 2026
25AQI (US)
16th June 2026
26AQI (US)
17th June 2026
22AQI (US)
18th June 2026
27AQI (US)
19th June 2026
30AQI (US)
20th June 2026
31AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
14AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
21AQI (US)
25th June 2026
26AQI (US)
26th June 2026
29AQI (US)
27th June 2026
26AQI (US)
28th June 2026
26AQI (US)
29th June 2026
50AQI (US)
30th June 2026
56AQI (US)
1st July 2026
59AQI (US)
2nd July 2026
11AQI (US)
3rd July 2026
22AQI (US)
4th July 2026
25AQI (US)
5th July 2026
21AQI (US)
6th July 2026
22AQI (US)
7th July 2026
26AQI (US)
8th July 2026
25AQI (US)
9th July 2026
26AQI (US)
10th July 2026
28AQI (US)
11th July 2026
30AQI (US)
12th July 2026
28AQI (US)
13th July 2026
30AQI (US)
14th July 2026
31AQI (US)
15th July 2026
25AQI (US)
16th July 2026
27AQI (US)
17th July 2026
48AQI (US)
18th July 2026
60AQI (US)
19th July 2026
56AQI (US)
20th July 2026
57AQI (US)
21st July 2026
78AQI (US)
22nd July 2026
81AQI (US)
23rd July 2026
63AQI (US)
24th July 2026
44AQI (US)
25th July 2026
44AQI (US)
26th July 2026
37AQI (US)
27th July 2026
39AQI (US)
28th July 2026
44AQI (US)
29th July 2026
37AQI (US)
30th July 2026
43AQI (US)
31st July 2026
32AQI (US)
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

38AQI (US)

41AQI (US)

49AQI (US)

38AQI (US)

43AQI (US)

26AQI (US)

39AQI (US)

No. of days

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

202639AQI (US)

26
5
20
8
15
16
25
5
20
11
29
1
24
7
159
53

Highest AQI (US) recorded in

March

49AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202548AQI (US)

27
4
24
4
18
11
2
14
16
21
10
13
17
18
12
1
20
11
30
14
17
7
23
17
14
223
139
3

Highest AQI (US) recorded in

November

56AQI (US)

Lowest AQI (US) recorded in

September

32AQI (US)

202444AQI (US)

16
15
24
5
23
8
14
15
1
16
15
18
12
21
10
19
12
21
9
28
3
24
6
31
255
110
1

Highest AQI (US) recorded in

April

55AQI (US)

Lowest AQI (US) recorded in

December

34AQI (US)

202348AQI (US)

21
8
1
19
9
14
17
15
15
15
16
14
16
21
10
26
5
21
9
20
11
17
10
2
18
12
221
138
3

Highest AQI (US) recorded in

April

55AQI (US)

Lowest AQI (US) recorded in

August

39AQI (US)

202248AQI (US)

21
9
16
5
15
16
13
17
9
22
15
15
17
7
1
2
1
24
5
22
9
18
12
28
3
200
121
1

Highest AQI (US) recorded in

April

56AQI (US)

Lowest AQI (US) recorded in

December

37AQI (US)

202145AQI (US)

21
9
16
12
15
14
12
9
16
15
14
16
24
7
24
7
25
5
25
6
21
9
23
8
236
117

Highest AQI (US) recorded in

June

52AQI (US)

Lowest AQI (US) recorded in

August

40AQI (US)

202043AQI (US)

7
6
13
8
10
8
22
8
28
3
16
11
4
18
1
24
7
21
9
21
10
180
71
4

Highest AQI (US) recorded in

August

61AQI (US)

Lowest AQI (US) recorded in

September

30AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
48AQI (US)
Least Polluted Year Recorded
2026(Avg.)
39AQI (US)

Chuo's annual 2026 AQI (US) (39) shows an average percentage change of -15.04% (improved AQI (US)) compared to previous years: 2020 (43), 2021 (45), 2022 (48), 2023 (48), 2024 (44), 2025 (48).