Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Chuo, Nasukarasuyama, Tochigi, 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+

August Air Quality Analysis

Chuo, Nasukarasuyama, Tochigi, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Aug 2022
62AQI
Lowest AQI recorded on
30th Aug 2024
10AQI

Same Day Analysis (20th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 47 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 20th Aug - 21st Aug 2025

Chuo, Nasukarasuyama, Tochigi, Japan

AQI
Day
Night
.

4 AM20th Aug 2025

6 PM

3 AM21st Aug 2025

Day time
Avg. Highest Time
6PM20th Aug

58AQI

Avg. Lowest Time
5AM20th Aug

40AQI

Night time
Avg. Highest Time
7PM20th Aug

53AQI

Avg. Lowest Time
2AM21st Aug

42AQI

In the last 24 hours,

Chuo's AQI reached its highest point of 58 at 6 PM during the Day, while the lowest point, 40, was recorded at 5 AM during the Day between 20th Aug and 21st Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Chuo, Nasukarasuyama, Tochigi, Japan

JulAug
22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Jul 2025404 AMAQI
22nd Jul 2025425 AMAQI
22nd Jul 2025406 AMAQI
22nd Jul 2025407 AMAQI
22nd Jul 2025428 AMAQI
22nd Jul 2025479 AMAQI
22nd Jul 20255110 AMAQI
22nd Jul 20255411 AMAQI
22nd Jul 20255412 PMAQI
22nd Jul 2025521 PMAQI
22nd Jul 2025522 PMAQI
22nd Jul 2025543 PMAQI
22nd Jul 2025544 PMAQI
22nd Jul 2025555 PMAQI
22nd Jul 2025546 PMAQI
22nd Jul 2025427 PMAQI
22nd Jul 2025348 PMAQI
22nd Jul 2025389 PMAQI
22nd Jul 20254010 PMAQI
22nd Jul 20254011 PMAQI
23rd Jul 20253812 AMAQI
23rd Jul 2025391 AMAQI
23rd Jul 2025402 AMAQI
23rd Jul 2025403 AMAQI

28°C22/35°C

23rd Jul 2025414 AMAQI
23rd Jul 2025445 AMAQI
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025438 AMAQI
23rd Jul 2025489 AMAQI
23rd Jul 20255010 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20255412 PMAQI
23rd Jul 2025551 PMAQI
23rd Jul 2025562 PMAQI
23rd Jul 2025563 PMAQI
23rd Jul 2025554 PMAQI
23rd Jul 2025445 PMAQI
23rd Jul 2025346 PMAQI
23rd Jul 2025337 PMAQI
23rd Jul 2025408 PMAQI
23rd Jul 2025429 PMAQI
23rd Jul 20254310 PMAQI
23rd Jul 20254511 PMAQI
24th Jul 20254512 AMAQI
24th Jul 2025441 AMAQI
24th Jul 2025422 AMAQI
24th Jul 2025423 AMAQI

28°C23/35°C

24th Jul 2025444 AMAQI
24th Jul 2025455 AMAQI
24th Jul 2025446 AMAQI
24th Jul 2025447 AMAQI
24th Jul 2025448 AMAQI
24th Jul 2025479 AMAQI
24th Jul 20255610 AMAQI
24th Jul 20255611 AMAQI
24th Jul 20255912 PMAQI
24th Jul 2025601 PMAQI
24th Jul 2025582 PMAQI
24th Jul 2025583 PMAQI
24th Jul 2025584 PMAQI
24th Jul 2025585 PMAQI
24th Jul 2025566 PMAQI
24th Jul 2025587 PMAQI
24th Jul 2025548 PMAQI
24th Jul 2025519 PMAQI
24th Jul 20255010 PMAQI
24th Jul 20255011 PMAQI
25th Jul 20254812 AMAQI
25th Jul 2025451 AMAQI
25th Jul 2025452 AMAQI
25th Jul 2025443 AMAQI

28°C22/35°C

25th Jul 2025464 AMAQI
25th Jul 2025485 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025477 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025539 AMAQI
25th Jul 20255610 AMAQI
25th Jul 20255911 AMAQI
25th Jul 20256112 PMAQI
25th Jul 2025591 PMAQI
25th Jul 2025582 PMAQI
25th Jul 2025593 PMAQI
25th Jul 2025604 PMAQI
25th Jul 2025575 PMAQI
25th Jul 2025536 PMAQI
25th Jul 2025527 PMAQI
25th Jul 2025528 PMAQI
25th Jul 2025499 PMAQI
25th Jul 20255010 PMAQI
25th Jul 20255211 PMAQI
26th Jul 20255012 AMAQI
26th Jul 2025491 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025463 AMAQI

27°C22/35°C

26th Jul 2025484 AMAQI
26th Jul 2025505 AMAQI
26th Jul 2025506 AMAQI
26th Jul 2025507 AMAQI
26th Jul 2025508 AMAQI
26th Jul 2025519 AMAQI
26th Jul 20255210 AMAQI
26th Jul 20255311 AMAQI
26th Jul 20255212 PMAQI
26th Jul 2025531 PMAQI
26th Jul 2025542 PMAQI
26th Jul 2025543 PMAQI
26th Jul 2025534 PMAQI
26th Jul 2025545 PMAQI
26th Jul 2025566 PMAQI
26th Jul 2025567 PMAQI
26th Jul 2025518 PMAQI
26th Jul 2025489 PMAQI
26th Jul 20254510 PMAQI
26th Jul 20254311 PMAQI
27th Jul 20253712 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025482 AMAQI
27th Jul 2025493 AMAQI

28°C22/35°C

27th Jul 2025494 AMAQI
27th Jul 2025505 AMAQI
27th Jul 2025506 AMAQI
27th Jul 2025507 AMAQI
27th Jul 2025508 AMAQI
27th Jul 2025449 AMAQI
27th Jul 20254310 AMAQI
27th Jul 20254611 AMAQI
27th Jul 20255212 PMAQI
27th Jul 2025521 PMAQI
27th Jul 2025512 PMAQI
27th Jul 2025513 PMAQI
27th Jul 2025524 PMAQI
27th Jul 2025525 PMAQI
27th Jul 2025526 PMAQI
27th Jul 2025507 PMAQI
27th Jul 2025518 PMAQI
27th Jul 2025509 PMAQI
27th Jul 20254810 PMAQI
27th Jul 20253911 PMAQI
28th Jul 20253712 AMAQI
28th Jul 2025421 AMAQI
28th Jul 2025482 AMAQI
28th Jul 2025483 AMAQI

29°C23/35°C

28th Jul 2025484 AMAQI
28th Jul 2025485 AMAQI
28th Jul 2025486 AMAQI
28th Jul 2025487 AMAQI
28th Jul 2025488 AMAQI
28th Jul 2025429 AMAQI
28th Jul 20254210 AMAQI
28th Jul 20254611 AMAQI
28th Jul 20254712 PMAQI
28th Jul 2025481 PMAQI
28th Jul 2025452 PMAQI
28th Jul 2025503 PMAQI
28th Jul 2025544 PMAQI
28th Jul 2025505 PMAQI
28th Jul 2025466 PMAQI
28th Jul 2025417 PMAQI
28th Jul 2025428 PMAQI
28th Jul 2025469 PMAQI
28th Jul 20254610 PMAQI
28th Jul 20254711 PMAQI
29th Jul 20254612 AMAQI
29th Jul 2025461 AMAQI
29th Jul 2025462 AMAQI
29th Jul 2025463 AMAQI

29°C24/36°C

29th Jul 2025464 AMAQI
29th Jul 2025475 AMAQI
29th Jul 2025466 AMAQI
29th Jul 2025467 AMAQI
29th Jul 2025468 AMAQI
29th Jul 2025499 AMAQI
29th Jul 20255310 AMAQI
29th Jul 20255411 AMAQI
29th Jul 20255412 PMAQI
29th Jul 2025541 PMAQI
29th Jul 2025502 PMAQI
29th Jul 2025523 PMAQI
29th Jul 2025544 PMAQI
29th Jul 2025455 PMAQI
29th Jul 2025316 PMAQI
29th Jul 2025227 PMAQI
29th Jul 2025278 PMAQI
29th Jul 2025339 PMAQI
29th Jul 20253210 PMAQI
29th Jul 20253011 PMAQI
30th Jul 20253212 AMAQI
30th Jul 2025401 AMAQI
30th Jul 2025472 AMAQI
30th Jul 2025473 AMAQI

28°C23/37°C

30th Jul 2025484 AMAQI
30th Jul 2025485 AMAQI
30th Jul 2025486 AMAQI
30th Jul 2025487 AMAQI
30th Jul 2025488 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20252210 AMAQI
30th Jul 20252511 AMAQI
30th Jul 20252612 PMAQI
30th Jul 2025261 PMAQI
30th Jul 2025312 PMAQI
30th Jul 2025343 PMAQI
30th Jul 2025334 PMAQI
30th Jul 2025325 PMAQI
30th Jul 2025296 PMAQI
30th Jul 2025277 PMAQI
30th Jul 2025338 PMAQI
30th Jul 2025439 PMAQI
30th Jul 20254410 PMAQI
30th Jul 20254411 PMAQI
31st Jul 20254412 AMAQI
31st Jul 2025441 AMAQI
31st Jul 2025462 AMAQI
31st Jul 2025463 AMAQI

27°C22/35°C

31st Jul 2025484 AMAQI
31st Jul 2025485 AMAQI
31st Jul 2025486 AMAQI
31st Jul 2025487 AMAQI
31st Jul 2025488 AMAQI
31st Jul 2025489 AMAQI
31st Jul 20254810 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20253812 PMAQI
31st Jul 2025361 PMAQI
31st Jul 2025342 PMAQI
31st Jul 2025383 PMAQI
31st Jul 2025384 PMAQI
31st Jul 2025375 PMAQI
31st Jul 2025286 PMAQI
31st Jul 2025247 PMAQI
31st Jul 2025288 PMAQI
31st Jul 2025349 PMAQI
31st Jul 20253510 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20253312 AMAQI
1st Aug 2025381 AMAQI
1st Aug 2025382 AMAQI
1st Aug 2025403 AMAQI

26°C21/34°C

1st Aug 2025424 AMAQI
1st Aug 2025405 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025427 AMAQI
1st Aug 2025418 AMAQI
1st Aug 2025389 AMAQI
1st Aug 20252810 AMAQI
1st Aug 20254111 AMAQI
1st Aug 20254512 PMAQI
1st Aug 2025461 PMAQI
1st Aug 2025362 PMAQI
1st Aug 2025343 PMAQI
1st Aug 2025434 PMAQI
1st Aug 2025395 PMAQI
1st Aug 2025436 PMAQI
1st Aug 2025307 PMAQI
1st Aug 2025288 PMAQI
1st Aug 2025329 PMAQI
1st Aug 20253610 PMAQI
1st Aug 20252911 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025341 AMAQI
2nd Aug 2025392 AMAQI
2nd Aug 2025403 AMAQI

25°C20/30°C

2nd Aug 2025414 AMAQI
2nd Aug 2025405 AMAQI
2nd Aug 2025426 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025349 AMAQI
2nd Aug 20253210 AMAQI
2nd Aug 20253611 AMAQI
2nd Aug 20252712 PMAQI
2nd Aug 2025341 PMAQI
2nd Aug 2025482 PMAQI
2nd Aug 2025493 PMAQI
2nd Aug 2025414 PMAQI
2nd Aug 2025505 PMAQI
2nd Aug 2025496 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025428 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253911 PMAQI
3rd Aug 20253112 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025392 AMAQI
3rd Aug 2025393 AMAQI

29°C24/36°C

3rd Aug 2025404 AMAQI
3rd Aug 2025405 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025398 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20254610 AMAQI
3rd Aug 20254311 AMAQI
3rd Aug 20255612 PMAQI
3rd Aug 2025511 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025463 PMAQI
3rd Aug 2025514 PMAQI
3rd Aug 2025505 PMAQI
3rd Aug 2025526 PMAQI
3rd Aug 2025527 PMAQI
3rd Aug 2025468 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20253810 PMAQI
3rd Aug 20253811 PMAQI
4th Aug 20253312 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025403 AMAQI

28°C23/35°C

4th Aug 2025414 AMAQI
4th Aug 2025425 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025417 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025459 AMAQI
4th Aug 20255010 AMAQI
4th Aug 20256111 AMAQI
4th Aug 20257012 PMAQI
4th Aug 2025661 PMAQI
4th Aug 2025772 PMAQI
4th Aug 2025663 PMAQI
4th Aug 2025774 PMAQI
4th Aug 2025725 PMAQI
4th Aug 2025696 PMAQI
4th Aug 2025627 PMAQI
4th Aug 2025608 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255610 PMAQI
4th Aug 20255111 PMAQI
5th Aug 20255012 AMAQI
5th Aug 2025431 AMAQI
5th Aug 2025422 AMAQI
5th Aug 2025403 AMAQI

28°C22/35°C

5th Aug 2025484 AMAQI
5th Aug 2025495 AMAQI
5th Aug 2025486 AMAQI
5th Aug 2025487 AMAQI
5th Aug 2025518 AMAQI
5th Aug 2025509 AMAQI
5th Aug 20255810 AMAQI
5th Aug 20255611 AMAQI
5th Aug 20256412 PMAQI
5th Aug 2025471 PMAQI
5th Aug 2025482 PMAQI
5th Aug 2025513 PMAQI
5th Aug 2025584 PMAQI
5th Aug 2025545 PMAQI
5th Aug 2025526 PMAQI
5th Aug 2025437 PMAQI
5th Aug 2025488 PMAQI
5th Aug 2025449 PMAQI
5th Aug 20254410 PMAQI
5th Aug 20254011 PMAQI
6th Aug 20254212 AMAQI
6th Aug 2025481 AMAQI
6th Aug 2025492 AMAQI
6th Aug 2025493 AMAQI

29°C25/36°C

6th Aug 2025514 AMAQI
6th Aug 2025505 AMAQI
6th Aug 2025516 AMAQI
6th Aug 2025517 AMAQI
6th Aug 2025508 AMAQI
6th Aug 2025389 AMAQI
6th Aug 20253710 AMAQI
6th Aug 20253011 AMAQI
6th Aug 20254712 PMAQI
6th Aug 2025341 PMAQI
6th Aug 2025402 PMAQI
6th Aug 2025443 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025485 PMAQI
6th Aug 2025406 PMAQI
6th Aug 2025447 PMAQI
6th Aug 2025498 PMAQI
6th Aug 2025449 PMAQI
6th Aug 20254710 PMAQI
6th Aug 20254711 PMAQI
7th Aug 20254412 AMAQI
7th Aug 2025471 AMAQI
7th Aug 2025472 AMAQI
7th Aug 2025473 AMAQI

27°C22/33°C

7th Aug 2025464 AMAQI
7th Aug 2025455 AMAQI
7th Aug 2025466 AMAQI
7th Aug 2025427 AMAQI
7th Aug 2025448 AMAQI
7th Aug 2025349 AMAQI
7th Aug 20253410 AMAQI
7th Aug 20253811 AMAQI
7th Aug 20252912 PMAQI
7th Aug 2025231 PMAQI
7th Aug 2025262 PMAQI
7th Aug 2025223 PMAQI
7th Aug 2025284 PMAQI
7th Aug 2025305 PMAQI
7th Aug 2025276 PMAQI
7th Aug 2025327 PMAQI
7th Aug 2025398 PMAQI
7th Aug 2025409 PMAQI
7th Aug 20254010 PMAQI
7th Aug 20253911 PMAQI
8th Aug 20253812 AMAQI
8th Aug 2025411 AMAQI
8th Aug 2025462 AMAQI
8th Aug 2025453 AMAQI

25°C21/30°C

8th Aug 2025454 AMAQI
8th Aug 2025415 AMAQI
8th Aug 2025416 AMAQI
8th Aug 2025407 AMAQI
8th Aug 2025408 AMAQI
8th Aug 2025329 AMAQI
8th Aug 20253110 AMAQI
8th Aug 20252511 AMAQI
8th Aug 20252412 PMAQI
8th Aug 2025281 PMAQI
8th Aug 2025262 PMAQI
8th Aug 2025223 PMAQI
8th Aug 2025234 PMAQI
8th Aug 2025305 PMAQI
8th Aug 2025346 PMAQI
8th Aug 2025337 PMAQI
8th Aug 2025348 PMAQI
8th Aug 2025389 PMAQI
8th Aug 20253510 PMAQI
8th Aug 20253511 PMAQI
9th Aug 20253612 AMAQI
9th Aug 2025381 AMAQI
9th Aug 2025412 AMAQI
9th Aug 2025423 AMAQI

24°C19/32°C

9th Aug 2025404 AMAQI
9th Aug 2025405 AMAQI
9th Aug 2025386 AMAQI
9th Aug 2025397 AMAQI
9th Aug 2025398 AMAQI
9th Aug 2025349 AMAQI
9th Aug 20253410 AMAQI
9th Aug 20253411 AMAQI
9th Aug 20253012 PMAQI
9th Aug 2025241 PMAQI
9th Aug 2025242 PMAQI
9th Aug 2025243 PMAQI
9th Aug 2025324 PMAQI
9th Aug 2025335 PMAQI
9th Aug 2025316 PMAQI
9th Aug 2025297 PMAQI
9th Aug 2025338 PMAQI
9th Aug 2025379 PMAQI
9th Aug 20253910 PMAQI
9th Aug 20253611 PMAQI
10th Aug 20253612 AMAQI
10th Aug 2025371 AMAQI
10th Aug 2025412 AMAQI
10th Aug 2025413 AMAQI

24°C18/31°C

10th Aug 2025404 AMAQI
10th Aug 2025385 AMAQI
10th Aug 2025386 AMAQI
10th Aug 2025377 AMAQI
10th Aug 2025388 AMAQI
10th Aug 2025369 AMAQI
10th Aug 20253710 AMAQI
10th Aug 20253911 AMAQI
10th Aug 20254412 PMAQI
10th Aug 2025441 PMAQI
10th Aug 2025402 PMAQI
10th Aug 2025323 PMAQI
10th Aug 2025264 PMAQI
10th Aug 2025235 PMAQI
10th Aug 2025266 PMAQI
10th Aug 2025237 PMAQI
10th Aug 2025258 PMAQI
10th Aug 2025309 PMAQI
10th Aug 20252910 PMAQI
10th Aug 20253011 PMAQI
11th Aug 20253012 AMAQI
11th Aug 2025341 AMAQI
11th Aug 2025392 AMAQI
11th Aug 2025383 AMAQI

21°C20/22°C

11th Aug 2025414 AMAQI
11th Aug 2025395 AMAQI
11th Aug 2025396 AMAQI
11th Aug 2025387 AMAQI
11th Aug 2025398 AMAQI
11th Aug 2025259 AMAQI
11th Aug 20252110 AMAQI
11th Aug 20252411 AMAQI
11th Aug 20252512 PMAQI
11th Aug 2025211 PMAQI
11th Aug 2025212 PMAQI
11th Aug 2025303 PMAQI
11th Aug 2025344 PMAQI
11th Aug 2025375 PMAQI
11th Aug 2025406 PMAQI
11th Aug 2025347 PMAQI
11th Aug 2025358 PMAQI
11th Aug 2025359 PMAQI
11th Aug 20253510 PMAQI
11th Aug 20253211 PMAQI
12th Aug 20253412 AMAQI
12th Aug 2025401 AMAQI
12th Aug 2025412 AMAQI
12th Aug 2025393 AMAQI

23°C21/26°C

12th Aug 2025344 AMAQI
12th Aug 2025355 AMAQI
12th Aug 2025356 AMAQI
12th Aug 2025367 AMAQI
12th Aug 2025368 AMAQI
12th Aug 2025249 AMAQI
12th Aug 20252010 AMAQI
12th Aug 20253311 AMAQI
12th Aug 20252612 PMAQI
12th Aug 2025231 PMAQI
12th Aug 2025222 PMAQI
12th Aug 2025213 PMAQI
12th Aug 2025254 PMAQI
12th Aug 2025295 PMAQI
12th Aug 2025256 PMAQI
12th Aug 2025307 PMAQI
12th Aug 2025308 PMAQI
12th Aug 2025349 PMAQI
12th Aug 20253410 PMAQI
12th Aug 20253411 PMAQI
13th Aug 20253512 AMAQI
13th Aug 2025381 AMAQI
13th Aug 2025382 AMAQI
13th Aug 2025383 AMAQI

23°C20/24°C

13th Aug 2025354 AMAQI
13th Aug 2025345 AMAQI
13th Aug 2025336 AMAQI
13th Aug 2025357 AMAQI
13th Aug 2025348 AMAQI
13th Aug 2025209 AMAQI
13th Aug 20251910 AMAQI
13th Aug 20252211 AMAQI
13th Aug 20252212 PMAQI
13th Aug 2025291 PMAQI
13th Aug 2025262 PMAQI
13th Aug 2025283 PMAQI
13th Aug 2025284 PMAQI
13th Aug 2025335 PMAQI
13th Aug 2025266 PMAQI
13th Aug 2025297 PMAQI
13th Aug 2025308 PMAQI
13th Aug 2025309 PMAQI
13th Aug 20253210 PMAQI
13th Aug 20253011 PMAQI
14th Aug 20253012 AMAQI
14th Aug 2025341 AMAQI
14th Aug 2025362 AMAQI
14th Aug 2025363 AMAQI

24°C20/32°C

14th Aug 2025344 AMAQI
14th Aug 2025335 AMAQI
14th Aug 2025336 AMAQI
14th Aug 2025327 AMAQI
14th Aug 2025348 AMAQI
14th Aug 2025289 AMAQI
14th Aug 20253110 AMAQI
14th Aug 20253611 AMAQI
14th Aug 20253212 PMAQI
14th Aug 2025331 PMAQI
14th Aug 2025312 PMAQI
14th Aug 2025363 PMAQI
14th Aug 2025324 PMAQI
14th Aug 2025295 PMAQI
14th Aug 2025316 PMAQI
14th Aug 2025317 PMAQI
14th Aug 2025328 PMAQI
14th Aug 2025329 PMAQI
14th Aug 20252910 PMAQI
14th Aug 20252811 PMAQI
15th Aug 20253312 AMAQI
15th Aug 2025341 AMAQI
15th Aug 2025332 AMAQI
15th Aug 2025323 AMAQI

24°C20/29°C

15th Aug 2025344 AMAQI
15th Aug 2025355 AMAQI
15th Aug 2025336 AMAQI
15th Aug 2025347 AMAQI
15th Aug 2025368 AMAQI
15th Aug 2025329 AMAQI
15th Aug 20253510 AMAQI
15th Aug 20254011 AMAQI
15th Aug 20254312 PMAQI
15th Aug 2025361 PMAQI
15th Aug 2025302 PMAQI
15th Aug 2025243 PMAQI
15th Aug 2025334 PMAQI
15th Aug 2025335 PMAQI
15th Aug 2025286 PMAQI
15th Aug 2025377 PMAQI
15th Aug 2025378 PMAQI
15th Aug 2025359 PMAQI
15th Aug 20253310 PMAQI
15th Aug 20253411 PMAQI
16th Aug 20253112 AMAQI
16th Aug 2025351 AMAQI
16th Aug 2025342 AMAQI
16th Aug 2025353 AMAQI

26°C22/31°C

16th Aug 2025364 AMAQI
16th Aug 2025375 AMAQI
16th Aug 2025366 AMAQI
16th Aug 2025367 AMAQI
16th Aug 2025368 AMAQI
16th Aug 2025329 AMAQI
16th Aug 20254210 AMAQI
16th Aug 20254311 AMAQI
16th Aug 20254412 PMAQI
16th Aug 2025511 PMAQI
16th Aug 2025512 PMAQI
16th Aug 2025503 PMAQI
16th Aug 2025464 PMAQI
16th Aug 2025395 PMAQI
16th Aug 2025386 PMAQI
16th Aug 2025357 PMAQI
16th Aug 2025328 PMAQI
16th Aug 2025339 PMAQI
16th Aug 20253310 PMAQI
16th Aug 20253211 PMAQI
17th Aug 20253412 AMAQI
17th Aug 2025371 AMAQI
17th Aug 2025352 AMAQI
17th Aug 2025363 AMAQI

24°C20/29°C

17th Aug 2025374 AMAQI
17th Aug 2025375 AMAQI
17th Aug 2025376 AMAQI
17th Aug 2025377 AMAQI
17th Aug 2025358 AMAQI
17th Aug 2025319 AMAQI
17th Aug 20253510 AMAQI
17th Aug 20253411 AMAQI
17th Aug 20253712 PMAQI
17th Aug 2025401 PMAQI
17th Aug 2025462 PMAQI
17th Aug 2025403 PMAQI
17th Aug 2025374 PMAQI
17th Aug 2025415 PMAQI
17th Aug 2025396 PMAQI
17th Aug 2025427 PMAQI
17th Aug 2025438 PMAQI
17th Aug 2025369 PMAQI
17th Aug 20253610 PMAQI
17th Aug 20253711 PMAQI
18th Aug 20253612 AMAQI
18th Aug 2025361 AMAQI
18th Aug 2025382 AMAQI
18th Aug 2025363 AMAQI

26°C21/33°C

18th Aug 2025364 AMAQI
18th Aug 2025385 AMAQI
18th Aug 2025406 AMAQI
18th Aug 2025407 AMAQI
18th Aug 2025398 AMAQI
18th Aug 2025399 AMAQI
18th Aug 20253610 AMAQI
18th Aug 20254011 AMAQI
18th Aug 20254512 PMAQI
18th Aug 2025411 PMAQI
18th Aug 2025422 PMAQI
18th Aug 2025453 PMAQI
18th Aug 2025524 PMAQI
18th Aug 2025565 PMAQI
18th Aug 2025506 PMAQI
18th Aug 2025457 PMAQI
18th Aug 2025468 PMAQI
18th Aug 2025429 PMAQI
18th Aug 20254010 PMAQI
18th Aug 20253811 PMAQI
19th Aug 20253412 AMAQI
19th Aug 2025371 AMAQI
19th Aug 2025402 AMAQI
19th Aug 2025383 AMAQI

26°C21/34°C

19th Aug 2025394 AMAQI
19th Aug 2025405 AMAQI
19th Aug 2025396 AMAQI
19th Aug 2025417 AMAQI
19th Aug 2025388 AMAQI
19th Aug 2025409 AMAQI
19th Aug 20254110 AMAQI
19th Aug 20255311 AMAQI
19th Aug 20255012 PMAQI
19th Aug 2025451 PMAQI
19th Aug 2025462 PMAQI
19th Aug 2025383 PMAQI
19th Aug 2025404 PMAQI
19th Aug 2025425 PMAQI
19th Aug 2025406 PMAQI
19th Aug 2025427 PMAQI
19th Aug 2025448 PMAQI
19th Aug 2025429 PMAQI
19th Aug 20253810 PMAQI
19th Aug 20253711 PMAQI
20th Aug 20254112 AMAQI
20th Aug 2025401 AMAQI
20th Aug 2025402 AMAQI
20th Aug 2025403 AMAQI

25°C21/33°C

20th Aug 2025424 AMAQI
20th Aug 2025405 AMAQI
20th Aug 2025426 AMAQI
20th Aug 2025427 AMAQI
20th Aug 2025428 AMAQI
20th Aug 2025499 AMAQI
20th Aug 20255410 AMAQI
20th Aug 20255111 AMAQI
20th Aug 20254612 PMAQI
20th Aug 2025531 PMAQI
20th Aug 2025572 PMAQI
20th Aug 2025543 PMAQI
20th Aug 2025564 PMAQI
20th Aug 2025505 PMAQI
20th Aug 2025586 PMAQI
20th Aug 2025537 PMAQI
20th Aug 2025528 PMAQI
20th Aug 2025499 PMAQI
20th Aug 20254710 PMAQI
20th Aug 20254811 PMAQI
21st Aug 20254412 AMAQI
21st Aug 2025441 AMAQI
21st Aug 2025422 AMAQI
21st Aug 2025433 AMAQI

26°C21/34°C

21st Aug 2025444 AMAQI
4 AM
21st Aug 2025445 AMAQI
21st Aug 2025436 AMAQI
21st Aug 2025447 AMAQI
21st Aug 2025458 AMAQI
21st Aug 2025509 AMAQI
21st Aug 20254610 AMAQI
21st Aug 20254811 AMAQI
11 AM
21st Aug 20254512 PMAQI
21st Aug 2025491 PMAQI
21st Aug 2025522 PMAQI
21st Aug 2025513 PMAQI
21st Aug 2025454 PMAQI
21st Aug 2025365 PMAQI
21st Aug 2025386 PMAQI
6 PM
21st Aug 2025447 PMAQI
21st Aug 2025478 PMAQI
21st Aug 2025489 PMAQI
21st Aug 20254310 PMAQI
21st Aug 20254511 PMAQI
11 PM
3 AM

--°C/°C

Day time
Avg. Highest Time
4 PM - 5 PM

44AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
9 AM - 10 AM

40AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 5 PM (Avg. 44), while the lowest AQI was between 9 AM to 10 AM (Avg. 40).
Night time
Avg. Highest Time
1 AM - 11 PM

40AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM

38AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 11 PM (Avg. 40), while the lowest AQI was between 12 AM to 12 AM (Avg. 38).

2025 Days Vs Air Quality

Chuo, Nasukarasuyama, Tochigi, Japan

2025

89%

207

11%

25

Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)

Good
207 Days
Moderate
25 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 89%

Health Risk Level:

Low

In 2025, 89% of 233 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, Nasukarasuyama, Tochigi, Japan

AQI levels in 2025

AQI
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 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
26AQI
2nd January 2025
27AQI
3rd January 2025
24AQI
4th January 2025
25AQI
5th January 2025
26AQI
6th January 2025
45AQI
7th January 2025
25AQI
8th January 2025
31AQI
9th January 2025
25AQI
10th January 2025
25AQI
11th January 2025
23AQI
12th January 2025
25AQI
13th January 2025
29AQI
14th January 2025
28AQI
15th January 2025
30AQI
16th January 2025
26AQI
17th January 2025
26AQI
18th January 2025
25AQI
19th January 2025
55AQI
20th January 2025
36AQI
21st January 2025
42AQI
22nd January 2025
34AQI
23rd January 2025
35AQI
24th January 2025
34AQI
25th January 2025
31AQI
26th January 2025
29AQI
27th January 2025
27AQI
28th January 2025
33AQI
29th January 2025
28AQI
30th January 2025
26AQI
31st January 2025
29AQI
1st February 2025
28AQI
2nd February 2025
29AQI
3rd February 2025
27AQI
4th February 2025
29AQI
5th February 2025
30AQI
6th February 2025
29AQI
7th February 2025
28AQI
8th February 2025
29AQI
9th February 2025
28AQI
10th February 2025
30AQI
11th February 2025
30AQI
12th February 2025
34AQI
13th February 2025
33AQI
14th February 2025
30AQI
15th February 2025
30AQI
16th February 2025
34AQI
17th February 2025
36AQI
18th February 2025
31AQI
19th February 2025
31AQI
20th February 2025
31AQI
21st February 2025
31AQI
22nd February 2025
32AQI
23rd February 2025
32AQI
24th February 2025
33AQI
25th February 2025
33AQI
26th February 2025
37AQI
27th February 2025
35AQI
28th February 2025
45AQI
1st March 2025
45AQI
2nd March 2025
51AQI
3rd March 2025
34AQI
4th March 2025
36AQI
5th March 2025
27AQI
6th March 2025
32AQI
7th March 2025
33AQI
8th March 2025
35AQI
9th March 2025
34AQI
10th March 2025
36AQI
11th March 2025
40AQI
12th March 2025
39AQI
13th March 2025
42AQI
14th March 2025
32AQI
15th March 2025
33AQI
16th March 2025
22AQI
17th March 2025
19AQI
18th March 2025
22AQI
19th March 2025
17AQI
20th March 2025
22AQI
21st March 2025
33AQI
22nd March 2025
45AQI
23rd March 2025
47AQI
24th March 2025
47AQI
25th March 2025
66AQI
26th March 2025
62AQI
27th March 2025
67AQI
28th March 2025
48AQI
29th March 2025
37AQI
30th March 2025
34AQI
31st March 2025
30AQI
1st April 2025
25AQI
2nd April 2025
21AQI
3rd April 2025
19AQI
4th April 2025
19AQI
5th April 2025
24AQI
6th April 2025
24AQI
7th April 2025
27AQI
8th April 2025
36AQI
9th April 2025
24AQI
10th April 2025
43AQI
11th April 2025
38AQI
12th April 2025
34AQI
13th April 2025
25AQI
14th April 2025
24AQI
15th April 2025
26AQI
16th April 2025
20AQI
17th April 2025
40AQI
18th April 2025
49AQI
19th April 2025
61AQI
20th April 2025
58AQI
21st April 2025
41AQI
22nd April 2025
49AQI
23rd April 2025
28AQI
24th April 2025
34AQI
25th April 2025
31AQI
26th April 2025
45AQI
27th April 2025
44AQI
28th April 2025
51AQI
29th April 2025
32AQI
30th April 2025
40AQI
1st May 2025
38AQI
2nd May 2025
27AQI
3rd May 2025
32AQI
4th May 2025
31AQI
5th May 2025
32AQI
6th May 2025
28AQI
7th May 2025
23AQI
8th May 2025
27AQI
9th May 2025
31AQI
10th May 2025
19AQI
11th May 2025
20AQI
12th May 2025
19AQI
13th May 2025
33AQI
14th May 2025
35AQI
15th May 2025
42AQI
16th May 2025
47AQI
17th May 2025
30AQI
18th May 2025
39AQI
19th May 2025
39AQI
20th May 2025
55AQI
21st May 2025
62AQI
22nd May 2025
51AQI
23rd May 2025
46AQI
24th May 2025
40AQI
25th May 2025
29AQI
26th May 2025
27AQI
27th May 2025
25AQI
28th May 2025
25AQI
29th May 2025
29AQI
30th May 2025
25AQI
31st May 2025
18AQI
1st June 2025
22AQI
2nd June 2025
33AQI
3rd June 2025
33AQI
4th June 2025
28AQI
5th June 2025
36AQI
6th June 2025
46AQI
7th June 2025
52AQI
8th June 2025
61AQI
9th June 2025
54AQI
10th June 2025
45AQI
11th June 2025
36AQI
12th June 2025
42AQI
13th June 2025
39AQI
14th June 2025
37AQI
15th June 2025
30AQI
16th June 2025
33AQI
17th June 2025
38AQI
18th June 2025
38AQI
19th June 2025
39AQI
20th June 2025
38AQI
21st June 2025
38AQI
22nd June 2025
33AQI
23rd June 2025
33AQI
24th June 2025
36AQI
25th June 2025
28AQI
26th June 2025
27AQI
27th June 2025
35AQI
28th June 2025
33AQI
29th June 2025
41AQI
30th June 2025
48AQI
1st July 2025
49AQI
2nd July 2025
49AQI
3rd July 2025
53AQI
4th July 2025
52AQI
5th July 2025
54AQI
6th July 2025
58AQI
7th July 2025
70AQI
8th July 2025
73AQI
9th July 2025
77AQI
10th July 2025
55AQI
11th July 2025
43AQI
12th July 2025
46AQI
13th July 2025
49AQI
14th July 2025
36AQI
15th July 2025
34AQI
16th July 2025
39AQI
17th July 2025
38AQI
18th July 2025
35AQI
19th July 2025
36AQI
20th July 2025
40AQI
21st July 2025
44AQI
22nd July 2025
45AQI
23rd July 2025
44AQI
24th July 2025
51AQI
25th July 2025
51AQI
26th July 2025
50AQI
27th July 2025
48AQI
28th July 2025
46AQI
29th July 2025
43AQI
30th July 2025
37AQI
31st July 2025
39AQI
1st August 2025
37AQI
2nd August 2025
40AQI
3rd August 2025
43AQI
4th August 2025
53AQI
5th August 2025
48AQI
6th August 2025
45AQI
7th August 2025
38AQI
8th August 2025
35AQI
9th August 2025
35AQI
10th August 2025
34AQI
11th August 2025
34AQI
12th August 2025
31AQI
13th August 2025
31AQI
14th August 2025
32AQI
15th August 2025
34AQI
16th August 2025
37AQI
17th August 2025
38AQI
18th August 2025
41AQI
19th August 2025
41AQI
20th August 2025
47AQI
21st August 2025
22nd August 2025
23rd August 2025
24th August 2025
25th August 2025
26th August 2025
27th August 2025
28th August 2025
29th August 2025
30th August 2025
31st August 2025
1st September 2025
2nd September 2025
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

30AQI

32AQI

38AQI

34AQI

33AQI

38AQI

48AQI

39AQI

No. of days

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

202536AQI

30
1
28
27
4
27
3
28
3
27
3
21
10
19
1
207
25

Highest AQI recorded in

July

48AQI

Lowest AQI recorded in

January

30AQI

202433AQI

31
29
27
4
25
5
28
3
25
5
20
11
31
28
2
31
29
1
31
335
31

Highest AQI recorded in

July

46AQI

Lowest AQI recorded in

January

26AQI

202333AQI

12
1
27
4
25
5
25
6
30
1
29
1
30
1
24
5
31
233
24

Highest AQI recorded in

April

42AQI

Lowest AQI recorded in

October

27AQI

202237AQI

30
1
21
28
3
23
7
27
4
15
15
18
7
2
1
28
1
28
3
11
1
231
43

Highest AQI recorded in

August

50AQI

Lowest AQI recorded in

February

30AQI

202134AQI

29
2
22
6
25
4
20
1
26
5
22
8
27
4
26
5
30
27
4
29
1
30
1
313
41

Highest AQI recorded in

June

43AQI

Lowest AQI recorded in

November

31AQI

202035AQI

12
1
20
1
17
1
22
8
28
3
13
18
19
28
3
22
8
29
2
210
45

Highest AQI recorded in

August

55AQI

Lowest AQI recorded in

April

25AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
37AQI
Least Polluted Year Recorded
2024(Avg.)
33AQI

Chuo's annual 2025 AQI (36) shows an average percentage change of 5.7% (worsened AQI) compared to previous years: 2020 (35), 2021 (34), 2022 (37), 2023 (33), 2024 (33).