Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Kusatsu, Shiga, 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

Kusatsu, Shiga, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Aug 2025
62AQI
Lowest AQI recorded on
24th Aug 2023
15AQI

Same Day Analysis (1st August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 31st Jul - 1st Aug 2026

Kusatsu, Shiga, Japan

AQI
Day
Night
.

4 AM31st Jul 2026

7 PM

3 AM1st Aug 2026

Day time
Avg. Highest Time
11AM31st Jul

54AQI

Avg. Lowest Time
6AM31st Jul

29AQI

Night time
Avg. Highest Time
1AM1st Aug

41AQI

Avg. Lowest Time
10PM31st Jul

25AQI

In the last 24 hours,

Kusatsu's AQI reached its highest point of 54 at 11 AM during the Day, while the lowest point, 25, was recorded at 10 PM during the Night between 31st Jul and 1st Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Kusatsu, Shiga, Japan

JulAug
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 - 31st31st - 01st01st
Day
Night
3rd Jul 2026144 AMAQI
3rd Jul 2026225 AMAQI
3rd Jul 2026266 AMAQI
3rd Jul 2026217 AMAQI
3rd Jul 2026248 AMAQI
3rd Jul 2026209 AMAQI
3rd Jul 20262110 AMAQI
3rd Jul 20261911 AMAQI
3rd Jul 20261912 PMAQI
3rd Jul 2026261 PMAQI
3rd Jul 2026242 PMAQI
3rd Jul 2026243 PMAQI
3rd Jul 2026194 PMAQI
3rd Jul 2026205 PMAQI
3rd Jul 2026256 PMAQI
3rd Jul 2026257 PMAQI
3rd Jul 2026248 PMAQI
3rd Jul 2026249 PMAQI
3rd Jul 20262410 PMAQI
3rd Jul 20262611 PMAQI
4th Jul 20262612 AMAQI
4th Jul 2026261 AMAQI
4th Jul 2026262 AMAQI
4th Jul 2026263 AMAQI

22°C18/28°C

4th Jul 2026244 AMAQI
4th Jul 2026265 AMAQI
4th Jul 2026276 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026268 AMAQI
4th Jul 2026249 AMAQI
4th Jul 20262510 AMAQI
4th Jul 20262311 AMAQI
4th Jul 20262412 PMAQI
4th Jul 2026231 PMAQI
4th Jul 2026232 PMAQI
4th Jul 2026253 PMAQI
4th Jul 2026264 PMAQI
4th Jul 2026255 PMAQI
4th Jul 2026246 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026238 PMAQI
4th Jul 2026239 PMAQI
4th Jul 20262410 PMAQI
4th Jul 20262311 PMAQI
5th Jul 20262312 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026202 AMAQI
5th Jul 2026213 AMAQI

21°C20/22°C

5th Jul 2026214 AMAQI
5th Jul 2026225 AMAQI
5th Jul 2026216 AMAQI
5th Jul 2026227 AMAQI
5th Jul 2026208 AMAQI
5th Jul 2026189 AMAQI
5th Jul 20261810 AMAQI
5th Jul 20261711 AMAQI
5th Jul 20261712 PMAQI
5th Jul 2026181 PMAQI
5th Jul 2026212 PMAQI
5th Jul 2026233 PMAQI
5th Jul 2026224 PMAQI
5th Jul 2026225 PMAQI
5th Jul 2026216 PMAQI
5th Jul 2026227 PMAQI
5th Jul 2026198 PMAQI
5th Jul 2026219 PMAQI
5th Jul 20261510 PMAQI
5th Jul 20262411 PMAQI
6th Jul 20262412 AMAQI
6th Jul 2026231 AMAQI
6th Jul 2026242 AMAQI
6th Jul 2026223 AMAQI

21°C20/23°C

6th Jul 2026194 AMAQI
6th Jul 2026235 AMAQI
6th Jul 2026236 AMAQI
6th Jul 2026157 AMAQI
6th Jul 2026158 AMAQI
6th Jul 2026139 AMAQI
6th Jul 20262910 AMAQI
6th Jul 20262611 AMAQI
6th Jul 20261512 PMAQI
6th Jul 2026111 PMAQI
6th Jul 202692 PMAQI
6th Jul 202683 PMAQI
6th Jul 202684 PMAQI
6th Jul 2026105 PMAQI
6th Jul 202686 PMAQI
6th Jul 2026117 PMAQI
6th Jul 2026138 PMAQI
6th Jul 2026139 PMAQI
6th Jul 20261110 PMAQI
6th Jul 2026811 PMAQI
7th Jul 20261112 AMAQI
7th Jul 2026141 AMAQI
7th Jul 202682 AMAQI
7th Jul 202683 AMAQI

21°C20/21°C

7th Jul 202684 AMAQI
7th Jul 2026175 AMAQI
7th Jul 202686 AMAQI
7th Jul 2026187 AMAQI
7th Jul 2026268 AMAQI
7th Jul 2026239 AMAQI
7th Jul 20262310 AMAQI
7th Jul 20262211 AMAQI
7th Jul 20262112 PMAQI
7th Jul 2026201 PMAQI
7th Jul 2026242 PMAQI
7th Jul 2026273 PMAQI
7th Jul 2026244 PMAQI
7th Jul 2026275 PMAQI
7th Jul 2026276 PMAQI
7th Jul 2026277 PMAQI
7th Jul 2026278 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262411 PMAQI
8th Jul 20262912 AMAQI
8th Jul 2026251 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026273 AMAQI

23°C20/28°C

8th Jul 2026244 AMAQI
8th Jul 2026275 AMAQI
8th Jul 2026286 AMAQI
8th Jul 2026287 AMAQI
8th Jul 2026298 AMAQI
8th Jul 2026269 AMAQI
8th Jul 20262610 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262412 PMAQI
8th Jul 2026231 PMAQI
8th Jul 2026242 PMAQI
8th Jul 2026253 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026245 PMAQI
8th Jul 2026246 PMAQI
8th Jul 2026197 PMAQI
8th Jul 2026218 PMAQI
8th Jul 2026229 PMAQI
8th Jul 20262310 PMAQI
8th Jul 20262511 PMAQI
9th Jul 20262812 AMAQI
9th Jul 2026291 AMAQI
9th Jul 2026292 AMAQI
9th Jul 2026263 AMAQI

24°C21/29°C

9th Jul 2026264 AMAQI
9th Jul 2026285 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026277 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026229 AMAQI
9th Jul 20262110 AMAQI
9th Jul 20262211 AMAQI
9th Jul 20262212 PMAQI
9th Jul 2026221 PMAQI
9th Jul 2026232 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026264 PMAQI
9th Jul 2026255 PMAQI
9th Jul 2026256 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026268 PMAQI
9th Jul 2026249 PMAQI
9th Jul 20262610 PMAQI
9th Jul 20262711 PMAQI
10th Jul 20262712 AMAQI
10th Jul 2026291 AMAQI
10th Jul 2026292 AMAQI
10th Jul 2026263 AMAQI

25°C21/31°C

10th Jul 2026264 AMAQI
10th Jul 2026285 AMAQI
10th Jul 2026256 AMAQI
10th Jul 2026277 AMAQI
10th Jul 2026298 AMAQI
10th Jul 2026289 AMAQI
10th Jul 20262710 AMAQI
10th Jul 20262611 AMAQI
10th Jul 20262612 PMAQI
10th Jul 2026241 PMAQI
10th Jul 2026232 PMAQI
10th Jul 2026213 PMAQI
10th Jul 2026224 PMAQI
10th Jul 2026285 PMAQI
10th Jul 2026296 PMAQI
10th Jul 2026287 PMAQI
10th Jul 2026258 PMAQI
10th Jul 2026209 PMAQI
10th Jul 20262110 PMAQI
10th Jul 20263111 PMAQI
11th Jul 20263112 AMAQI
11th Jul 2026311 AMAQI
11th Jul 2026272 AMAQI
11th Jul 2026223 AMAQI

26°C21/32°C

11th Jul 2026264 AMAQI
11th Jul 2026305 AMAQI
11th Jul 2026296 AMAQI
11th Jul 2026267 AMAQI
11th Jul 2026318 AMAQI
11th Jul 2026319 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20262711 AMAQI
11th Jul 20262712 PMAQI
11th Jul 2026231 PMAQI
11th Jul 2026232 PMAQI
11th Jul 2026233 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026285 PMAQI
11th Jul 2026286 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026248 PMAQI
11th Jul 2026299 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20263011 PMAQI
12th Jul 20262912 AMAQI
12th Jul 2026281 AMAQI
12th Jul 2026282 AMAQI
12th Jul 2026283 AMAQI

26°C22/32°C

12th Jul 2026264 AMAQI
12th Jul 2026205 AMAQI
12th Jul 2026176 AMAQI
12th Jul 2026237 AMAQI
12th Jul 2026268 AMAQI
12th Jul 2026279 AMAQI
12th Jul 20262810 AMAQI
12th Jul 20262511 AMAQI
12th Jul 20262412 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026232 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026254 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026296 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026299 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20263011 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026292 AMAQI
13th Jul 2026303 AMAQI

27°C23/31°C

13th Jul 2026304 AMAQI
13th Jul 2026305 AMAQI
13th Jul 2026296 AMAQI
13th Jul 2026307 AMAQI
13th Jul 2026298 AMAQI
13th Jul 2026299 AMAQI
13th Jul 20263110 AMAQI
13th Jul 20262711 AMAQI
13th Jul 20262612 PMAQI
13th Jul 2026251 PMAQI
13th Jul 2026212 PMAQI
13th Jul 2026223 PMAQI
13th Jul 2026234 PMAQI
13th Jul 2026285 PMAQI
13th Jul 2026276 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026288 PMAQI
13th Jul 2026299 PMAQI
13th Jul 20263110 PMAQI
13th Jul 20263211 PMAQI
14th Jul 20263212 AMAQI
14th Jul 2026321 AMAQI
14th Jul 2026322 AMAQI
14th Jul 2026293 AMAQI

28°C24/33°C

14th Jul 2026264 AMAQI
14th Jul 2026305 AMAQI
14th Jul 2026286 AMAQI
14th Jul 2026297 AMAQI
14th Jul 2026258 AMAQI
14th Jul 2026309 AMAQI
14th Jul 20263110 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262412 PMAQI
14th Jul 2026221 PMAQI
14th Jul 2026212 PMAQI
14th Jul 2026203 PMAQI
14th Jul 2026244 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026286 PMAQI
14th Jul 2026297 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026299 PMAQI
14th Jul 20263010 PMAQI
14th Jul 20263211 PMAQI
15th Jul 20263112 AMAQI
15th Jul 2026311 AMAQI
15th Jul 2026312 AMAQI
15th Jul 2026313 AMAQI

29°C23/34°C

15th Jul 2026264 AMAQI
15th Jul 2026305 AMAQI
15th Jul 2026226 AMAQI
15th Jul 2026297 AMAQI
15th Jul 2026318 AMAQI
15th Jul 2026289 AMAQI
15th Jul 20263210 AMAQI
15th Jul 20266411 AMAQI
15th Jul 20262512 PMAQI
15th Jul 2026231 PMAQI
15th Jul 2026232 PMAQI
15th Jul 2026203 PMAQI
15th Jul 2026184 PMAQI
15th Jul 2026205 PMAQI
15th Jul 2026196 PMAQI
15th Jul 2026187 PMAQI
15th Jul 2026218 PMAQI
15th Jul 2026209 PMAQI
15th Jul 20262610 PMAQI
15th Jul 20263011 PMAQI
16th Jul 20264712 AMAQI
16th Jul 2026521 AMAQI
16th Jul 2026672 AMAQI
16th Jul 2026643 AMAQI

29°C24/34°C

16th Jul 2026674 AMAQI
16th Jul 2026665 AMAQI
16th Jul 2026696 AMAQI
16th Jul 2026647 AMAQI
16th Jul 2026648 AMAQI
16th Jul 2026619 AMAQI
16th Jul 20265810 AMAQI
16th Jul 20265711 AMAQI
16th Jul 20265612 PMAQI
16th Jul 2026581 PMAQI
16th Jul 2026572 PMAQI
16th Jul 2026593 PMAQI
16th Jul 2026564 PMAQI
16th Jul 2026525 PMAQI
16th Jul 2026496 PMAQI
16th Jul 2026497 PMAQI
16th Jul 2026478 PMAQI
16th Jul 2026409 PMAQI
16th Jul 20263710 PMAQI
16th Jul 20263611 PMAQI
17th Jul 20263312 AMAQI
17th Jul 2026371 AMAQI
17th Jul 2026382 AMAQI
17th Jul 2026373 AMAQI

28°C25/32°C

17th Jul 2026354 AMAQI
17th Jul 2026325 AMAQI
17th Jul 2026336 AMAQI
17th Jul 2026327 AMAQI
17th Jul 2026308 AMAQI
17th Jul 2026409 AMAQI
17th Jul 20264010 AMAQI
17th Jul 20264611 AMAQI
17th Jul 20264712 PMAQI
17th Jul 2026441 PMAQI
17th Jul 2026402 PMAQI
17th Jul 2026483 PMAQI
17th Jul 2026504 PMAQI
17th Jul 2026495 PMAQI
17th Jul 2026536 PMAQI
17th Jul 2026527 PMAQI
17th Jul 2026588 PMAQI
17th Jul 2026579 PMAQI
17th Jul 20265210 PMAQI
17th Jul 20265411 PMAQI
18th Jul 20265412 AMAQI
18th Jul 2026561 AMAQI
18th Jul 2026542 AMAQI
18th Jul 2026543 AMAQI

29°C23/35°C

18th Jul 2026524 AMAQI
18th Jul 2026525 AMAQI
18th Jul 2026546 AMAQI
18th Jul 2026547 AMAQI
18th Jul 2026558 AMAQI
18th Jul 2026539 AMAQI
18th Jul 20265710 AMAQI
18th Jul 20265511 AMAQI
18th Jul 20265612 PMAQI
18th Jul 2026561 PMAQI
18th Jul 2026602 PMAQI
18th Jul 2026603 PMAQI
18th Jul 2026594 PMAQI
18th Jul 2026585 PMAQI
18th Jul 2026566 PMAQI
18th Jul 2026517 PMAQI
18th Jul 2026458 PMAQI
18th Jul 2026439 PMAQI
18th Jul 20264610 PMAQI
18th Jul 20264511 PMAQI
19th Jul 20264412 AMAQI
19th Jul 2026411 AMAQI
19th Jul 2026422 AMAQI
19th Jul 2026413 AMAQI

29°C26/33°C

19th Jul 2026424 AMAQI
19th Jul 2026415 AMAQI
19th Jul 2026376 AMAQI
19th Jul 2026377 AMAQI
19th Jul 2026378 AMAQI
19th Jul 2026379 AMAQI
19th Jul 20263410 AMAQI
19th Jul 20263811 AMAQI
19th Jul 20263712 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026332 PMAQI
19th Jul 2026393 PMAQI
19th Jul 2026394 PMAQI
19th Jul 2026395 PMAQI
19th Jul 2026326 PMAQI
19th Jul 2026337 PMAQI
19th Jul 2026288 PMAQI
19th Jul 2026249 PMAQI
19th Jul 20262510 PMAQI
19th Jul 20262811 PMAQI
20th Jul 20263112 AMAQI
20th Jul 2026301 AMAQI
20th Jul 2026282 AMAQI
20th Jul 2026283 AMAQI

29°C24/33°C

20th Jul 2026284 AMAQI
20th Jul 2026295 AMAQI
20th Jul 2026266 AMAQI
20th Jul 2026287 AMAQI
20th Jul 2026278 AMAQI
20th Jul 2026299 AMAQI
20th Jul 20263510 AMAQI
20th Jul 20264111 AMAQI
20th Jul 20264712 PMAQI
20th Jul 2026521 PMAQI
20th Jul 2026542 PMAQI
20th Jul 2026533 PMAQI
20th Jul 2026524 PMAQI
20th Jul 2026565 PMAQI
20th Jul 2026516 PMAQI
20th Jul 2026417 PMAQI
20th Jul 2026388 PMAQI
20th Jul 2026429 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20265311 PMAQI
21st Jul 20265812 AMAQI
21st Jul 2026591 AMAQI
21st Jul 2026612 AMAQI
21st Jul 2026603 AMAQI

30°C25/35°C

21st Jul 2026604 AMAQI
21st Jul 2026615 AMAQI
21st Jul 2026646 AMAQI
21st Jul 2026607 AMAQI
21st Jul 2026618 AMAQI
21st Jul 2026619 AMAQI
21st Jul 20266510 AMAQI
21st Jul 20266311 AMAQI
21st Jul 2026671 PMAQI
21st Jul 2026692 PMAQI
21st Jul 2026653 PMAQI
21st Jul 2026654 PMAQI
21st Jul 2026665 PMAQI
21st Jul 2026696 PMAQI
21st Jul 20261027 PMAQI
21st Jul 2026748 PMAQI
21st Jul 2026749 PMAQI
21st Jul 20266810 PMAQI
21st Jul 20266911 PMAQI
22nd Jul 20267112 AMAQI
22nd Jul 2026691 AMAQI
22nd Jul 2026702 AMAQI
22nd Jul 2026703 AMAQI

30°C26/36°C

22nd Jul 2026684 AMAQI
22nd Jul 2026655 AMAQI
22nd Jul 2026676 AMAQI
22nd Jul 2026647 AMAQI
22nd Jul 2026638 AMAQI
22nd Jul 2026639 AMAQI
22nd Jul 20266410 AMAQI
22nd Jul 20266911 AMAQI
22nd Jul 20267612 PMAQI
22nd Jul 2026821 PMAQI
22nd Jul 2026862 PMAQI
22nd Jul 2026903 PMAQI
22nd Jul 2026904 PMAQI
22nd Jul 2026925 PMAQI
22nd Jul 2026916 PMAQI
22nd Jul 2026887 PMAQI
22nd Jul 2026858 PMAQI
22nd Jul 2026889 PMAQI
22nd Jul 20267810 PMAQI
22nd Jul 20266911 PMAQI
23rd Jul 20267612 AMAQI
23rd Jul 2026711 AMAQI
23rd Jul 2026652 AMAQI
23rd Jul 2026623 AMAQI

31°C26/37°C

23rd Jul 2026654 AMAQI
23rd Jul 2026635 AMAQI
23rd Jul 2026586 AMAQI
23rd Jul 2026617 AMAQI
23rd Jul 2026678 AMAQI
23rd Jul 2026589 AMAQI
23rd Jul 20266010 AMAQI
23rd Jul 20265611 AMAQI
23rd Jul 20266412 PMAQI
23rd Jul 2026611 PMAQI
23rd Jul 2026562 PMAQI
23rd Jul 2026593 PMAQI
23rd Jul 2026534 PMAQI
23rd Jul 2026515 PMAQI
23rd Jul 2026476 PMAQI
23rd Jul 2026427 PMAQI
23rd Jul 2026238 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262610 PMAQI
23rd Jul 20262611 PMAQI
24th Jul 20262612 AMAQI
24th Jul 2026241 AMAQI
24th Jul 2026292 AMAQI
24th Jul 2026243 AMAQI

31°C26/37°C

24th Jul 2026214 AMAQI
24th Jul 2026205 AMAQI
24th Jul 2026266 AMAQI
24th Jul 2026267 AMAQI
24th Jul 2026248 AMAQI
24th Jul 2026319 AMAQI
24th Jul 20262910 AMAQI
24th Jul 20262911 AMAQI
24th Jul 20263212 PMAQI
24th Jul 2026421 PMAQI
24th Jul 2026472 PMAQI
24th Jul 2026383 PMAQI
24th Jul 2026454 PMAQI
24th Jul 2026395 PMAQI
24th Jul 2026316 PMAQI
24th Jul 2026397 PMAQI
24th Jul 2026288 PMAQI
24th Jul 2026409 PMAQI
24th Jul 20263110 PMAQI
24th Jul 20263411 PMAQI
25th Jul 20264312 AMAQI
25th Jul 2026391 AMAQI
25th Jul 2026392 AMAQI
25th Jul 2026363 AMAQI

31°C25/37°C

25th Jul 2026364 AMAQI
25th Jul 2026335 AMAQI
25th Jul 2026426 AMAQI
25th Jul 2026427 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026459 AMAQI
25th Jul 20264810 AMAQI
25th Jul 20265111 AMAQI
25th Jul 20265212 PMAQI
25th Jul 2026501 PMAQI
25th Jul 2026502 PMAQI
25th Jul 2026503 PMAQI
25th Jul 2026494 PMAQI
25th Jul 2026495 PMAQI
25th Jul 2026456 PMAQI
25th Jul 2026477 PMAQI
25th Jul 2026398 PMAQI
25th Jul 2026359 PMAQI
25th Jul 20263110 PMAQI
25th Jul 20263411 PMAQI
26th Jul 20263712 AMAQI
26th Jul 2026351 AMAQI
26th Jul 2026342 AMAQI
26th Jul 2026363 AMAQI

30°C25/36°C

26th Jul 2026334 AMAQI
26th Jul 2026345 AMAQI
26th Jul 2026366 AMAQI
26th Jul 2026337 AMAQI
26th Jul 2026378 AMAQI
26th Jul 2026399 AMAQI
26th Jul 20264610 AMAQI
26th Jul 20264911 AMAQI
26th Jul 20265412 PMAQI
26th Jul 2026541 PMAQI
26th Jul 2026512 PMAQI
26th Jul 2026553 PMAQI
26th Jul 2026414 PMAQI
26th Jul 2026415 PMAQI
26th Jul 2026386 PMAQI
26th Jul 2026347 PMAQI
26th Jul 2026288 PMAQI
26th Jul 2026289 PMAQI
26th Jul 20262310 PMAQI
26th Jul 20262411 PMAQI
27th Jul 20263212 AMAQI
27th Jul 2026281 AMAQI
27th Jul 2026262 AMAQI
27th Jul 2026263 AMAQI

29°C24/36°C

27th Jul 2026284 AMAQI
27th Jul 2026285 AMAQI
27th Jul 2026266 AMAQI
27th Jul 2026267 AMAQI
27th Jul 2026268 AMAQI
27th Jul 2026349 AMAQI
27th Jul 20264710 AMAQI
27th Jul 20263011 AMAQI
27th Jul 20262412 PMAQI
27th Jul 2026241 PMAQI
27th Jul 2026222 PMAQI
27th Jul 2026223 PMAQI
27th Jul 2026234 PMAQI
27th Jul 2026245 PMAQI
27th Jul 2026246 PMAQI
27th Jul 2026247 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026249 PMAQI
27th Jul 20262410 PMAQI
27th Jul 20262411 PMAQI
28th Jul 20262412 AMAQI
28th Jul 2026221 AMAQI
28th Jul 2026242 AMAQI
28th Jul 2026233 AMAQI

29°C25/35°C

28th Jul 2026244 AMAQI
28th Jul 2026225 AMAQI
28th Jul 2026236 AMAQI
28th Jul 2026247 AMAQI
28th Jul 2026248 AMAQI
28th Jul 2026309 AMAQI
28th Jul 20263710 AMAQI
28th Jul 20263711 AMAQI
28th Jul 20264912 PMAQI
28th Jul 2026591 PMAQI
28th Jul 2026572 PMAQI
28th Jul 2026453 PMAQI
28th Jul 2026474 PMAQI
28th Jul 2026475 PMAQI
28th Jul 2026456 PMAQI
28th Jul 2026247 PMAQI
28th Jul 2026228 PMAQI
28th Jul 2026219 PMAQI
28th Jul 20262210 PMAQI
28th Jul 20262111 PMAQI
29th Jul 20262312 AMAQI
29th Jul 2026261 AMAQI
29th Jul 2026252 AMAQI
29th Jul 2026223 AMAQI

27°C24/33°C

29th Jul 2026244 AMAQI
29th Jul 2026255 AMAQI
29th Jul 2026256 AMAQI
29th Jul 2026247 AMAQI
29th Jul 2026228 AMAQI
29th Jul 2026269 AMAQI
29th Jul 20263210 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20263612 PMAQI
29th Jul 2026431 PMAQI
29th Jul 2026472 PMAQI
29th Jul 2026443 PMAQI
29th Jul 2026444 PMAQI
29th Jul 2026405 PMAQI
29th Jul 2026356 PMAQI
29th Jul 2026427 PMAQI
29th Jul 2026348 PMAQI
29th Jul 2026359 PMAQI
29th Jul 20263610 PMAQI
29th Jul 20263911 PMAQI
30th Jul 20264012 AMAQI
30th Jul 2026421 AMAQI
30th Jul 2026452 AMAQI
30th Jul 2026473 AMAQI

27°C23/31°C

30th Jul 2026444 AMAQI
30th Jul 2026455 AMAQI
30th Jul 2026426 AMAQI
30th Jul 2026467 AMAQI
30th Jul 2026468 AMAQI
30th Jul 2026469 AMAQI
30th Jul 20264810 AMAQI
30th Jul 20265411 AMAQI
30th Jul 20265912 PMAQI
30th Jul 2026621 PMAQI
30th Jul 2026602 PMAQI
30th Jul 2026593 PMAQI
30th Jul 2026634 PMAQI
30th Jul 2026595 PMAQI
30th Jul 2026516 PMAQI
30th Jul 2026507 PMAQI
30th Jul 2026508 PMAQI
30th Jul 2026409 PMAQI
30th Jul 20264110 PMAQI
30th Jul 20264111 PMAQI
31st Jul 20263012 AMAQI
31st Jul 2026311 AMAQI
31st Jul 2026352 AMAQI
31st Jul 2026323 AMAQI

30°C25/36°C

31st Jul 2026344 AMAQI
31st Jul 2026335 AMAQI
31st Jul 2026296 AMAQI
31st Jul 2026327 AMAQI
31st Jul 2026418 AMAQI
31st Jul 2026479 AMAQI
31st Jul 20264510 AMAQI
31st Jul 20265411 AMAQI
31st Jul 20263312 PMAQI
31st Jul 2026431 PMAQI
31st Jul 2026472 PMAQI
31st Jul 2026373 PMAQI
31st Jul 2026384 PMAQI
31st Jul 2026515 PMAQI
31st Jul 2026376 PMAQI
31st Jul 2026337 PMAQI
31st Jul 2026348 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20263111 PMAQI
1st Aug 20263812 AMAQI
1st Aug 2026411 AMAQI
1st Aug 2026372 AMAQI
1st Aug 2026303 AMAQI

29°C24/35°C

1st Aug 2026344 AMAQI
4 AM
1st Aug 2026325 AMAQI
1st Aug 2026376 AMAQI
1st Aug 2026357 AMAQI
1st Aug 2026408 AMAQI
1st Aug 2026399 AMAQI
1st Aug 20264810 AMAQI
1st Aug 20264611 AMAQI
11 AM
1st Aug 20265312 PMAQI
1st Aug 2026381 PMAQI
1st Aug 2026382 PMAQI
1st Aug 2026393 PMAQI
1st Aug 2026414 PMAQI
1st Aug 2026415 PMAQI
1st Aug 2026396 PMAQI
1st Aug 2026397 PMAQI
7 PM
1st Aug 2026418 PMAQI
1st Aug 2026439 PMAQI
1st Aug 20263910 PMAQI
1st Aug 20263611 PMAQI
11 PM
3 AM

29°C24/35°C

Day time
Avg. Highest Time
10 AM - 11 AM

39AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 11 AM (Avg. 39), while the lowest AQI was between 4 AM to 4 AM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 9 PM

34AQI

6 hours / Day
180 hours / Month
Avg. Lowest Time
10 PM

32AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 9 PM (Avg. 34), while the lowest AQI was between 10 PM to 10 PM (Avg. 32).

2026 Days Vs Air Quality

Kusatsu, Shiga, Japan

2026

77%

165

23%

48

Total number of days with different AQI categories in last 213 days in 2026 (152 days remaining)

Good
165 Days
Moderate
48 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 77%

Health Risk Level:

Low

In 2026, 77% of 213 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

Kusatsu, Shiga, Japan

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
19AQI (US)
2nd January 2026
18AQI (US)
3rd January 2026
15AQI (US)
4th January 2026
27AQI (US)
5th January 2026
49AQI (US)
6th January 2026
18AQI (US)
7th January 2026
29AQI (US)
8th January 2026
34AQI (US)
9th January 2026
18AQI (US)
10th January 2026
32AQI (US)
11th January 2026
25AQI (US)
12th January 2026
26AQI (US)
13th January 2026
35AQI (US)
14th January 2026
27AQI (US)
15th January 2026
37AQI (US)
16th January 2026
59AQI (US)
17th January 2026
64AQI (US)
18th January 2026
46AQI (US)
19th January 2026
48AQI (US)
20th January 2026
28AQI (US)
21st January 2026
13AQI (US)
22nd January 2026
21AQI (US)
23rd January 2026
40AQI (US)
24th January 2026
46AQI (US)
25th January 2026
28AQI (US)
26th January 2026
27AQI (US)
27th January 2026
44AQI (US)
28th January 2026
26AQI (US)
29th January 2026
24AQI (US)
30th January 2026
35AQI (US)
31st January 2026
33AQI (US)
1st February 2026
37AQI (US)
2nd February 2026
51AQI (US)
3rd February 2026
34AQI (US)
4th February 2026
35AQI (US)
5th February 2026
59AQI (US)
6th February 2026
48AQI (US)
7th February 2026
12AQI (US)
8th February 2026
14AQI (US)
9th February 2026
38AQI (US)
10th February 2026
54AQI (US)
11th February 2026
42AQI (US)
12th February 2026
50AQI (US)
13th February 2026
59AQI (US)
14th February 2026
75AQI (US)
15th February 2026
64AQI (US)
16th February 2026
52AQI (US)
17th February 2026
14AQI (US)
18th February 2026
25AQI (US)
19th February 2026
33AQI (US)
20th February 2026
32AQI (US)
21st February 2026
58AQI (US)
22nd February 2026
46AQI (US)
23rd February 2026
49AQI (US)
24th February 2026
56AQI (US)
25th February 2026
33AQI (US)
26th February 2026
13AQI (US)
27th February 2026
46AQI (US)
28th February 2026
48AQI (US)
1st March 2026
50AQI (US)
2nd March 2026
80AQI (US)
3rd March 2026
49AQI (US)
4th March 2026
58AQI (US)
5th March 2026
56AQI (US)
6th March 2026
52AQI (US)
7th March 2026
48AQI (US)
8th March 2026
46AQI (US)
9th March 2026
50AQI (US)
10th March 2026
58AQI (US)
11th March 2026
55AQI (US)
12th March 2026
66AQI (US)
13th March 2026
46AQI (US)
14th March 2026
46AQI (US)
15th March 2026
61AQI (US)
16th March 2026
62AQI (US)
17th March 2026
53AQI (US)
18th March 2026
58AQI (US)
19th March 2026
49AQI (US)
20th March 2026
52AQI (US)
21st March 2026
51AQI (US)
22nd March 2026
54AQI (US)
23rd March 2026
52AQI (US)
24th March 2026
60AQI (US)
25th March 2026
64AQI (US)
26th March 2026
11AQI (US)
27th March 2026
30AQI (US)
28th March 2026
62AQI (US)
29th March 2026
74AQI (US)
30th March 2026
54AQI (US)
31st March 2026
19AQI (US)
1st April 2026
22AQI (US)
2nd April 2026
44AQI (US)
3rd April 2026
51AQI (US)
4th April 2026
43AQI (US)
5th April 2026
23AQI (US)
6th April 2026
33AQI (US)
7th April 2026
33AQI (US)
8th April 2026
30AQI (US)
9th April 2026
41AQI (US)
10th April 2026
46AQI (US)
11th April 2026
36AQI (US)
12th April 2026
37AQI (US)
13th April 2026
36AQI (US)
14th April 2026
48AQI (US)
15th April 2026
40AQI (US)
16th April 2026
35AQI (US)
17th April 2026
41AQI (US)
18th April 2026
32AQI (US)
19th April 2026
38AQI (US)
20th April 2026
38AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
46AQI (US)
23rd April 2026
36AQI (US)
24th April 2026
31AQI (US)
25th April 2026
46AQI (US)
26th April 2026
49AQI (US)
27th April 2026
49AQI (US)
28th April 2026
45AQI (US)
29th April 2026
40AQI (US)
30th April 2026
35AQI (US)
1st May 2026
45AQI (US)
2nd May 2026
52AQI (US)
3rd May 2026
51AQI (US)
4th May 2026
26AQI (US)
5th May 2026
19AQI (US)
6th May 2026
34AQI (US)
7th May 2026
35AQI (US)
8th May 2026
27AQI (US)
9th May 2026
28AQI (US)
10th May 2026
34AQI (US)
11th May 2026
37AQI (US)
12th May 2026
40AQI (US)
13th May 2026
44AQI (US)
14th May 2026
41AQI (US)
15th May 2026
40AQI (US)
16th May 2026
83AQI (US)
17th May 2026
67AQI (US)
18th May 2026
53AQI (US)
19th May 2026
48AQI (US)
20th May 2026
61AQI (US)
21st May 2026
60AQI (US)
22nd May 2026
64AQI (US)
23rd May 2026
56AQI (US)
24th May 2026
60AQI (US)
25th May 2026
50AQI (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
27AQI (US)
1st June 2026
30AQI (US)
2nd June 2026
30AQI (US)
3rd June 2026
21AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
22AQI (US)
8th June 2026
20AQI (US)
9th June 2026
23AQI (US)
10th June 2026
22AQI (US)
11th June 2026
24AQI (US)
12th June 2026
39AQI (US)
13th June 2026
28AQI (US)
14th June 2026
24AQI (US)
15th June 2026
23AQI (US)
16th June 2026
28AQI (US)
17th June 2026
23AQI (US)
18th June 2026
20AQI (US)
19th June 2026
29AQI (US)
20th June 2026
22AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
18AQI (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
28AQI (US)
29th June 2026
28AQI (US)
30th June 2026
45AQI (US)
1st July 2026
55AQI (US)
2nd July 2026
11AQI (US)
3rd July 2026
21AQI (US)
4th July 2026
25AQI (US)
5th July 2026
21AQI (US)
6th July 2026
16AQI (US)
7th July 2026
20AQI (US)
8th July 2026
25AQI (US)
9th July 2026
25AQI (US)
10th July 2026
26AQI (US)
11th July 2026
27AQI (US)
12th July 2026
26AQI (US)
13th July 2026
28AQI (US)
14th July 2026
28AQI (US)
15th July 2026
27AQI (US)
16th July 2026
56AQI (US)
17th July 2026
43AQI (US)
18th July 2026
53AQI (US)
19th July 2026
36AQI (US)
20th July 2026
39AQI (US)
21st July 2026
66AQI (US)
22nd July 2026
76AQI (US)
23rd July 2026
54AQI (US)
24th July 2026
32AQI (US)
25th July 2026
42AQI (US)
26th July 2026
39AQI (US)
27th July 2026
27AQI (US)
28th July 2026
32AQI (US)
29th July 2026
33AQI (US)
30th July 2026
49AQI (US)
31st July 2026
37AQI (US)
1st August 2026
40AQI (US)
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

32AQI (US)

42AQI (US)

52AQI (US)

39AQI (US)

43AQI (US)

25AQI (US)

35AQI (US)

40AQI (US)

No. of days

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

202638AQI (US)

29
2
19
9
11
20
29
1
21
10
30
25
6
1
165
48

Highest AQI (US) recorded in

March

52AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202542AQI (US)

27
4
24
4
22
9
20
10
23
8
23
7
18
13
20
11
30
27
4
23
7
26
5
283
82

Highest AQI (US) recorded in

July

52AQI (US)

Lowest AQI (US) recorded in

September

33AQI (US)

202436AQI (US)

29
2
27
2
24
7
23
6
1
29
2
27
3
27
4
29
2
28
2
30
1
28
2
31
332
33
1

Highest AQI (US) recorded in

April

48AQI (US)

Lowest AQI (US) recorded in

October

31AQI (US)

202339AQI (US)

25
6
26
2
21
10
16
14
27
4
23
7
27
4
31
29
1
30
1
24
5
25
6
304
60

Highest AQI (US) recorded in

April

50AQI (US)

Lowest AQI (US) recorded in

August

29AQI (US)

202238AQI (US)

29
1
18
3
23
8
13
5
21
10
24
6
16
6
1
29
31
26
4
31
262
43

Highest AQI (US) recorded in

March

45AQI (US)

Lowest AQI (US) recorded in

August

26AQI (US)

202134AQI (US)

26
5
22
6
28
3
21
2
28
3
25
5
30
1
30
1
28
2
31
25
5
26
5
320
38

Highest AQI (US) recorded in

June

40AQI (US)

Lowest AQI (US) recorded in

August

28AQI (US)

202033AQI (US)

11
2
18
3
18
24
6
28
3
18
13
19
30
1
28
2
29
2
223
32

Highest AQI (US) recorded in

August

47AQI (US)

Lowest AQI (US) recorded in

July

26AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
42AQI (US)
Least Polluted Year Recorded
2020(Avg.)
33AQI (US)

Kusatsu's annual 2026 AQI (US) (38) shows an average percentage change of 3.3% (worsened AQI (US)) compared to previous years: 2020 (33), 2021 (34), 2022 (38), 2023 (39), 2024 (36), 2025 (42).