Hikari, Yamaguchi, 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+
September Air Quality Analysis
Hikari, Yamaguchi, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Sep 2021
66AQILowest AQI recorded on
15th Sep 2024
16AQISame Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Hikari, Yamaguchi, Japan
AQI
Day
Night
.
5 AM22nd Sep 2025
6 PM
4 AM23rd Sep 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
7PM22nd Sep
30AQI
Avg. Lowest Time
12PM22nd Sep
14AQI
In the last 24 hours,
Hikari's AQI reached its highest point of 30 at 7 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hikari, Yamaguchi, Japan
AugSep
24th - 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 - 22nd22nd - 23rd23rd
Day
Night
24th Aug 2025465 AMAQI
24th Aug 2025456 AMAQI
24th Aug 2025467 AMAQI
24th Aug 2025448 AMAQI
24th Aug 2025399 AMAQI
24th Aug 20254410 AMAQI
24th Aug 20254011 AMAQI
24th Aug 20254212 PMAQI
24th Aug 2025401 PMAQI
24th Aug 2025432 PMAQI
24th Aug 2025403 PMAQI
24th Aug 2025404 PMAQI
24th Aug 2025425 PMAQI
24th Aug 2025386 PMAQI
24th Aug 2025417 PMAQI
24th Aug 2025408 PMAQI
24th Aug 2025409 PMAQI
24th Aug 20254210 PMAQI
24th Aug 20254011 PMAQI
25th Aug 20254112 AMAQI
25th Aug 2025441 AMAQI
25th Aug 2025442 AMAQI
25th Aug 2025463 AMAQI
25th Aug 2025444 AMAQI
28°C25/32°C
25th Aug 2025465 AMAQI
25th Aug 2025466 AMAQI
25th Aug 2025467 AMAQI
25th Aug 2025448 AMAQI
25th Aug 2025319 AMAQI
25th Aug 20252810 AMAQI
25th Aug 20253311 AMAQI
25th Aug 20253312 PMAQI
25th Aug 2025361 PMAQI
25th Aug 2025462 PMAQI
25th Aug 2025403 PMAQI
25th Aug 2025484 PMAQI
25th Aug 2025455 PMAQI
25th Aug 2025466 PMAQI
25th Aug 2025527 PMAQI
25th Aug 2025408 PMAQI
25th Aug 2025449 PMAQI
25th Aug 20254010 PMAQI
25th Aug 20254311 PMAQI
26th Aug 20254112 AMAQI
26th Aug 2025481 AMAQI
26th Aug 2025462 AMAQI
26th Aug 2025463 AMAQI
26th Aug 2025444 AMAQI
27°C25/31°C
26th Aug 2025445 AMAQI
26th Aug 2025466 AMAQI
26th Aug 2025467 AMAQI
26th Aug 2025468 AMAQI
26th Aug 2025319 AMAQI
26th Aug 20253410 AMAQI
26th Aug 20254711 AMAQI
26th Aug 20254912 PMAQI
26th Aug 2025471 PMAQI
26th Aug 2025442 PMAQI
26th Aug 2025533 PMAQI
26th Aug 2025534 PMAQI
26th Aug 2025525 PMAQI
26th Aug 2025446 PMAQI
26th Aug 2025447 PMAQI
26th Aug 2025538 PMAQI
26th Aug 2025489 PMAQI
26th Aug 20255010 PMAQI
26th Aug 20254611 PMAQI
27th Aug 20254712 AMAQI
27th Aug 2025501 AMAQI
27th Aug 2025442 AMAQI
27th Aug 2025453 AMAQI
27th Aug 2025444 AMAQI
27°C25/30°C
27th Aug 2025455 AMAQI
27th Aug 2025446 AMAQI
27th Aug 2025437 AMAQI
27th Aug 2025448 AMAQI
27th Aug 2025289 AMAQI
27th Aug 20254310 AMAQI
27th Aug 20254411 AMAQI
27th Aug 20255012 PMAQI
27th Aug 2025461 PMAQI
27th Aug 2025462 PMAQI
27th Aug 2025463 PMAQI
27th Aug 2025514 PMAQI
27th Aug 2025405 PMAQI
27th Aug 2025396 PMAQI
27th Aug 2025417 PMAQI
27th Aug 2025438 PMAQI
27th Aug 2025419 PMAQI
27th Aug 20254210 PMAQI
27th Aug 20254411 PMAQI
28th Aug 20254212 AMAQI
28th Aug 2025451 AMAQI
28th Aug 2025452 AMAQI
28th Aug 2025463 AMAQI
28th Aug 2025454 AMAQI
27°C24/30°C
28th Aug 2025445 AMAQI
28th Aug 2025456 AMAQI
28th Aug 2025447 AMAQI
28th Aug 2025458 AMAQI
28th Aug 2025389 AMAQI
28th Aug 20254210 AMAQI
28th Aug 20254511 AMAQI
28th Aug 20254412 PMAQI
28th Aug 2025441 PMAQI
28th Aug 2025442 PMAQI
28th Aug 2025363 PMAQI
28th Aug 2025424 PMAQI
28th Aug 2025455 PMAQI
28th Aug 2025446 PMAQI
28th Aug 2025487 PMAQI
28th Aug 2025438 PMAQI
28th Aug 2025409 PMAQI
28th Aug 20254510 PMAQI
28th Aug 20254411 PMAQI
29th Aug 20254212 AMAQI
29th Aug 2025441 AMAQI
29th Aug 2025452 AMAQI
29th Aug 2025463 AMAQI
29th Aug 2025454 AMAQI
27°C24/30°C
29th Aug 2025445 AMAQI
29th Aug 2025436 AMAQI
29th Aug 2025437 AMAQI
29th Aug 2025438 AMAQI
29th Aug 2025419 AMAQI
29th Aug 20254410 AMAQI
29th Aug 20254811 AMAQI
29th Aug 20254412 PMAQI
29th Aug 2025501 PMAQI
29th Aug 2025522 PMAQI
29th Aug 2025503 PMAQI
29th Aug 2025564 PMAQI
29th Aug 2025585 PMAQI
29th Aug 2025576 PMAQI
29th Aug 2025577 PMAQI
29th Aug 2025558 PMAQI
29th Aug 2025539 PMAQI
29th Aug 20255510 PMAQI
29th Aug 20255311 PMAQI
30th Aug 20255212 AMAQI
30th Aug 2025461 AMAQI
30th Aug 2025452 AMAQI
30th Aug 2025453 AMAQI
30th Aug 2025464 AMAQI
27°C24/31°C
30th Aug 2025425 AMAQI
30th Aug 2025436 AMAQI
30th Aug 2025437 AMAQI
30th Aug 2025448 AMAQI
30th Aug 2025519 AMAQI
30th Aug 20254810 AMAQI
30th Aug 20255111 AMAQI
30th Aug 20255112 PMAQI
30th Aug 2025461 PMAQI
30th Aug 2025542 PMAQI
30th Aug 2025483 PMAQI
30th Aug 2025504 PMAQI
30th Aug 2025495 PMAQI
30th Aug 2025526 PMAQI
30th Aug 2025497 PMAQI
30th Aug 2025498 PMAQI
30th Aug 2025429 PMAQI
30th Aug 20254410 PMAQI
30th Aug 20254211 PMAQI
31st Aug 20254612 AMAQI
31st Aug 2025451 AMAQI
31st Aug 2025472 AMAQI
31st Aug 2025473 AMAQI
31st Aug 2025454 AMAQI
27°C25/31°C
31st Aug 2025455 AMAQI
31st Aug 2025466 AMAQI
31st Aug 2025467 AMAQI
31st Aug 2025488 AMAQI
31st Aug 2025469 AMAQI
31st Aug 20254210 AMAQI
31st Aug 20255011 AMAQI
31st Aug 20254512 PMAQI
31st Aug 2025441 PMAQI
31st Aug 2025382 PMAQI
31st Aug 2025423 PMAQI
31st Aug 2025404 PMAQI
31st Aug 2025445 PMAQI
31st Aug 2025386 PMAQI
31st Aug 2025477 PMAQI
31st Aug 2025438 PMAQI
31st Aug 2025429 PMAQI
31st Aug 20254510 PMAQI
31st Aug 20254211 PMAQI
1st Sep 20254312 AMAQI
1st Sep 2025451 AMAQI
1st Sep 2025452 AMAQI
1st Sep 2025453 AMAQI
1st Sep 2025454 AMAQI
27°C25/30°C
1st Sep 2025485 AMAQI
1st Sep 2025486 AMAQI
1st Sep 2025477 AMAQI
1st Sep 2025488 AMAQI
1st Sep 2025309 AMAQI
1st Sep 20252410 AMAQI
1st Sep 20252211 AMAQI
1st Sep 20253212 PMAQI
1st Sep 2025341 PMAQI
1st Sep 2025362 PMAQI
1st Sep 2025343 PMAQI
1st Sep 2025324 PMAQI
1st Sep 2025315 PMAQI
1st Sep 2025446 PMAQI
1st Sep 2025377 PMAQI
1st Sep 2025328 PMAQI
1st Sep 2025429 PMAQI
1st Sep 20253710 PMAQI
1st Sep 20253611 PMAQI
2nd Sep 20253612 AMAQI
2nd Sep 2025421 AMAQI
2nd Sep 2025442 AMAQI
2nd Sep 2025463 AMAQI
2nd Sep 2025434 AMAQI
27°C25/30°C
2nd Sep 2025425 AMAQI
2nd Sep 2025436 AMAQI
2nd Sep 2025447 AMAQI
2nd Sep 2025438 AMAQI
2nd Sep 2025369 AMAQI
2nd Sep 20252310 AMAQI
2nd Sep 20252711 AMAQI
2nd Sep 20252412 PMAQI
2nd Sep 2025241 PMAQI
2nd Sep 2025292 PMAQI
2nd Sep 2025253 PMAQI
2nd Sep 2025264 PMAQI
2nd Sep 2025225 PMAQI
2nd Sep 2025276 PMAQI
2nd Sep 2025287 PMAQI
2nd Sep 2025338 PMAQI
2nd Sep 2025359 PMAQI
2nd Sep 20253610 PMAQI
2nd Sep 20253311 PMAQI
3rd Sep 20253612 AMAQI
3rd Sep 2025381 AMAQI
3rd Sep 2025432 AMAQI
3rd Sep 2025443 AMAQI
3rd Sep 2025414 AMAQI
27°C25/30°C
3rd Sep 2025415 AMAQI
3rd Sep 2025426 AMAQI
3rd Sep 2025407 AMAQI
3rd Sep 2025408 AMAQI
3rd Sep 2025229 AMAQI
3rd Sep 20252910 AMAQI
3rd Sep 20252611 AMAQI
3rd Sep 20253112 PMAQI
3rd Sep 2025371 PMAQI
3rd Sep 2025362 PMAQI
3rd Sep 2025283 PMAQI
3rd Sep 2025284 PMAQI
3rd Sep 2025285 PMAQI
3rd Sep 2025306 PMAQI
3rd Sep 2025287 PMAQI
3rd Sep 2025408 PMAQI
3rd Sep 2025369 PMAQI
3rd Sep 20253810 PMAQI
3rd Sep 20253611 PMAQI
4th Sep 20253012 AMAQI
4th Sep 2025381 AMAQI
4th Sep 2025422 AMAQI
4th Sep 2025423 AMAQI
4th Sep 2025404 AMAQI
27°C25/30°C
4th Sep 2025385 AMAQI
4th Sep 2025386 AMAQI
4th Sep 2025387 AMAQI
4th Sep 2025378 AMAQI
4th Sep 2025199 AMAQI
4th Sep 20252210 AMAQI
4th Sep 20251911 AMAQI
4th Sep 20252612 PMAQI
4th Sep 2025231 PMAQI
4th Sep 2025212 PMAQI
4th Sep 2025213 PMAQI
4th Sep 2025204 PMAQI
4th Sep 2025275 PMAQI
4th Sep 2025146 PMAQI
4th Sep 2025167 PMAQI
4th Sep 2025218 PMAQI
4th Sep 2025139 PMAQI
4th Sep 20251110 PMAQI
4th Sep 20251111 PMAQI
5th Sep 20251112 AMAQI
5th Sep 2025191 AMAQI
5th Sep 2025372 AMAQI
5th Sep 2025383 AMAQI
5th Sep 2025364 AMAQI
25°C24/27°C
5th Sep 2025355 AMAQI
5th Sep 2025346 AMAQI
5th Sep 2025347 AMAQI
5th Sep 2025358 AMAQI
5th Sep 2025209 AMAQI
5th Sep 20251510 AMAQI
5th Sep 20251711 AMAQI
5th Sep 20251712 PMAQI
5th Sep 2025151 PMAQI
5th Sep 2025172 PMAQI
5th Sep 2025183 PMAQI
5th Sep 2025204 PMAQI
5th Sep 2025205 PMAQI
5th Sep 2025206 PMAQI
5th Sep 2025227 PMAQI
5th Sep 2025248 PMAQI
5th Sep 2025239 PMAQI
5th Sep 20252210 PMAQI
5th Sep 20252211 PMAQI
6th Sep 20252012 AMAQI
6th Sep 2025221 AMAQI
6th Sep 2025222 AMAQI
6th Sep 2025223 AMAQI
6th Sep 2025244 AMAQI
27°C24/32°C
6th Sep 2025245 AMAQI
6th Sep 2025276 AMAQI
6th Sep 2025267 AMAQI
6th Sep 2025268 AMAQI
6th Sep 2025259 AMAQI
6th Sep 20252510 AMAQI
6th Sep 20252511 AMAQI
6th Sep 20253012 PMAQI
6th Sep 2025331 PMAQI
6th Sep 2025322 PMAQI
6th Sep 2025283 PMAQI
6th Sep 2025284 PMAQI
6th Sep 2025305 PMAQI
6th Sep 2025306 PMAQI
6th Sep 2025347 PMAQI
6th Sep 2025278 PMAQI
6th Sep 2025309 PMAQI
6th Sep 20252910 PMAQI
6th Sep 20252611 PMAQI
7th Sep 20253012 AMAQI
7th Sep 2025241 AMAQI
7th Sep 2025242 AMAQI
7th Sep 2025243 AMAQI
7th Sep 2025244 AMAQI
27°C24/30°C
7th Sep 2025245 AMAQI
7th Sep 2025246 AMAQI
7th Sep 2025267 AMAQI
7th Sep 2025248 AMAQI
7th Sep 2025299 AMAQI
7th Sep 20252810 AMAQI
7th Sep 20253511 AMAQI
7th Sep 20253612 PMAQI
7th Sep 2025371 PMAQI
7th Sep 2025442 PMAQI
7th Sep 2025383 PMAQI
7th Sep 2025324 PMAQI
7th Sep 2025365 PMAQI
7th Sep 2025306 PMAQI
7th Sep 2025367 PMAQI
7th Sep 2025368 PMAQI
7th Sep 2025329 PMAQI
7th Sep 20253510 PMAQI
7th Sep 20253611 PMAQI
8th Sep 20253612 AMAQI
8th Sep 2025321 AMAQI
8th Sep 2025262 AMAQI
8th Sep 2025253 AMAQI
8th Sep 2025264 AMAQI
27°C25/31°C
8th Sep 2025265 AMAQI
8th Sep 2025276 AMAQI
8th Sep 2025277 AMAQI
8th Sep 2025278 AMAQI
8th Sep 2025249 AMAQI
8th Sep 20253610 AMAQI
8th Sep 20253211 AMAQI
8th Sep 20252912 PMAQI
8th Sep 2025321 PMAQI
8th Sep 2025312 PMAQI
8th Sep 2025343 PMAQI
8th Sep 2025264 PMAQI
8th Sep 2025305 PMAQI
8th Sep 2025276 PMAQI
8th Sep 2025367 PMAQI
8th Sep 2025328 PMAQI
8th Sep 2025339 PMAQI
8th Sep 20253310 PMAQI
8th Sep 20253111 PMAQI
9th Sep 20253012 AMAQI
9th Sep 2025301 AMAQI
9th Sep 2025302 AMAQI
9th Sep 2025293 AMAQI
9th Sep 2025284 AMAQI
27°C25/31°C
9th Sep 2025305 AMAQI
9th Sep 2025306 AMAQI
9th Sep 2025307 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025309 AMAQI
9th Sep 20253410 AMAQI
9th Sep 20253611 AMAQI
9th Sep 20253112 PMAQI
9th Sep 2025301 PMAQI
9th Sep 2025252 PMAQI
9th Sep 2025353 PMAQI
9th Sep 2025284 PMAQI
9th Sep 2025365 PMAQI
9th Sep 2025346 PMAQI
9th Sep 2025347 PMAQI
9th Sep 2025318 PMAQI
9th Sep 2025299 PMAQI
9th Sep 20252810 PMAQI
9th Sep 20253011 PMAQI
10th Sep 20253012 AMAQI
10th Sep 2025321 AMAQI
10th Sep 2025302 AMAQI
10th Sep 2025293 AMAQI
10th Sep 2025294 AMAQI
27°C24/31°C
10th Sep 2025305 AMAQI
10th Sep 2025306 AMAQI
10th Sep 2025307 AMAQI
10th Sep 2025308 AMAQI
10th Sep 2025329 AMAQI
10th Sep 20253810 AMAQI
10th Sep 20253811 AMAQI
10th Sep 20253512 PMAQI
10th Sep 2025321 PMAQI
10th Sep 2025302 PMAQI
10th Sep 2025313 PMAQI
10th Sep 2025264 PMAQI
10th Sep 2025245 PMAQI
10th Sep 2025286 PMAQI
10th Sep 2025297 PMAQI
10th Sep 2025278 PMAQI
10th Sep 2025279 PMAQI
10th Sep 20253010 PMAQI
10th Sep 20252711 PMAQI
11th Sep 20252612 AMAQI
11th Sep 2025331 AMAQI
11th Sep 2025322 AMAQI
11th Sep 2025313 AMAQI
11th Sep 2025314 AMAQI
25°C24/26°C
11th Sep 2025315 AMAQI
11th Sep 2025306 AMAQI
11th Sep 2025327 AMAQI
11th Sep 2025318 AMAQI
11th Sep 2025199 AMAQI
11th Sep 20252610 AMAQI
11th Sep 20252011 AMAQI
11th Sep 20252612 PMAQI
11th Sep 2025261 PMAQI
11th Sep 2025252 PMAQI
11th Sep 2025253 PMAQI
11th Sep 2025254 PMAQI
11th Sep 2025285 PMAQI
11th Sep 2025236 PMAQI
11th Sep 2025277 PMAQI
11th Sep 2025378 PMAQI
11th Sep 2025349 PMAQI
11th Sep 20253010 PMAQI
11th Sep 20252911 PMAQI
12th Sep 20252712 AMAQI
12th Sep 2025301 AMAQI
12th Sep 2025322 AMAQI
12th Sep 2025323 AMAQI
12th Sep 2025304 AMAQI
25°C23/28°C
12th Sep 2025315 AMAQI
12th Sep 2025306 AMAQI
12th Sep 2025317 AMAQI
12th Sep 2025298 AMAQI
12th Sep 2025209 AMAQI
12th Sep 20252010 AMAQI
12th Sep 20252211 AMAQI
12th Sep 20252212 PMAQI
12th Sep 2025261 PMAQI
12th Sep 2025322 PMAQI
12th Sep 2025243 PMAQI
12th Sep 2025284 PMAQI
12th Sep 2025275 PMAQI
12th Sep 2025286 PMAQI
12th Sep 2025277 PMAQI
12th Sep 2025268 PMAQI
12th Sep 2025279 PMAQI
12th Sep 20252610 PMAQI
12th Sep 20252611 PMAQI
13th Sep 20252812 AMAQI
13th Sep 2025311 AMAQI
13th Sep 2025322 AMAQI
13th Sep 2025323 AMAQI
13th Sep 2025314 AMAQI
25°C23/28°C
13th Sep 2025315 AMAQI
13th Sep 2025306 AMAQI
13th Sep 2025317 AMAQI
13th Sep 2025318 AMAQI
13th Sep 2025229 AMAQI
13th Sep 20252910 AMAQI
13th Sep 20253111 AMAQI
13th Sep 20253412 PMAQI
13th Sep 2025361 PMAQI
13th Sep 2025382 PMAQI
13th Sep 2025343 PMAQI
13th Sep 2025324 PMAQI
13th Sep 2025345 PMAQI
13th Sep 2025356 PMAQI
13th Sep 2025367 PMAQI
13th Sep 2025358 PMAQI
13th Sep 2025319 PMAQI
13th Sep 20253010 PMAQI
13th Sep 20252711 PMAQI
14th Sep 20253012 AMAQI
14th Sep 2025281 AMAQI
14th Sep 2025312 AMAQI
14th Sep 2025313 AMAQI
14th Sep 2025324 AMAQI
26°C25/28°C
14th Sep 2025315 AMAQI
14th Sep 2025326 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025249 AMAQI
14th Sep 20251810 AMAQI
14th Sep 20252611 AMAQI
14th Sep 20253112 PMAQI
14th Sep 2025241 PMAQI
14th Sep 2025222 PMAQI
14th Sep 2025203 PMAQI
14th Sep 2025264 PMAQI
14th Sep 2025285 PMAQI
14th Sep 2025306 PMAQI
14th Sep 2025277 PMAQI
14th Sep 2025308 PMAQI
14th Sep 2025339 PMAQI
14th Sep 20253010 PMAQI
14th Sep 20252811 PMAQI
15th Sep 20252912 AMAQI
15th Sep 2025321 AMAQI
15th Sep 2025332 AMAQI
15th Sep 2025333 AMAQI
15th Sep 2025314 AMAQI
27°C25/30°C
15th Sep 2025315 AMAQI
15th Sep 2025306 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025308 AMAQI
15th Sep 2025249 AMAQI
15th Sep 20253010 AMAQI
15th Sep 20253211 AMAQI
15th Sep 20253812 PMAQI
15th Sep 2025391 PMAQI
15th Sep 2025382 PMAQI
15th Sep 2025313 PMAQI
15th Sep 2025354 PMAQI
15th Sep 2025465 PMAQI
15th Sep 2025396 PMAQI
15th Sep 2025407 PMAQI
15th Sep 2025418 PMAQI
15th Sep 2025359 PMAQI
15th Sep 20253310 PMAQI
15th Sep 20253011 PMAQI
16th Sep 20253212 AMAQI
16th Sep 2025331 AMAQI
16th Sep 2025312 AMAQI
16th Sep 2025313 AMAQI
16th Sep 2025324 AMAQI
27°C25/30°C
16th Sep 2025315 AMAQI
16th Sep 2025326 AMAQI
16th Sep 2025317 AMAQI
16th Sep 2025318 AMAQI
16th Sep 2025369 AMAQI
16th Sep 20253610 AMAQI
16th Sep 20253511 AMAQI
16th Sep 20254212 PMAQI
16th Sep 2025381 PMAQI
16th Sep 2025422 PMAQI
16th Sep 2025463 PMAQI
16th Sep 2025464 PMAQI
16th Sep 2025495 PMAQI
16th Sep 2025526 PMAQI
16th Sep 2025557 PMAQI
16th Sep 2025518 PMAQI
16th Sep 2025429 PMAQI
16th Sep 20254310 PMAQI
16th Sep 20254011 PMAQI
17th Sep 20253812 AMAQI
17th Sep 2025361 AMAQI
17th Sep 2025322 AMAQI
17th Sep 2025323 AMAQI
17th Sep 2025334 AMAQI
27°C24/30°C
17th Sep 2025355 AMAQI
17th Sep 2025346 AMAQI
17th Sep 2025347 AMAQI
17th Sep 2025348 AMAQI
17th Sep 2025509 AMAQI
17th Sep 20255610 AMAQI
17th Sep 20255411 AMAQI
17th Sep 20255412 PMAQI
17th Sep 2025461 PMAQI
17th Sep 2025402 PMAQI
17th Sep 2025283 PMAQI
17th Sep 2025364 PMAQI
17th Sep 2025285 PMAQI
17th Sep 2025326 PMAQI
17th Sep 2025297 PMAQI
17th Sep 2025308 PMAQI
17th Sep 2025319 PMAQI
17th Sep 20252910 PMAQI
17th Sep 20252711 PMAQI
18th Sep 20252712 AMAQI
18th Sep 2025281 AMAQI
18th Sep 2025332 AMAQI
18th Sep 2025343 AMAQI
18th Sep 2025364 AMAQI
27°C25/30°C
18th Sep 2025385 AMAQI
18th Sep 2025396 AMAQI
18th Sep 2025387 AMAQI
18th Sep 2025388 AMAQI
18th Sep 2025249 AMAQI
18th Sep 20251910 AMAQI
18th Sep 20251811 AMAQI
18th Sep 20251712 PMAQI
18th Sep 2025201 PMAQI
18th Sep 2025222 PMAQI
18th Sep 2025183 PMAQI
18th Sep 2025174 PMAQI
18th Sep 2025175 PMAQI
18th Sep 2025166 PMAQI
18th Sep 2025167 PMAQI
18th Sep 2025228 PMAQI
18th Sep 2025269 PMAQI
18th Sep 20252510 PMAQI
18th Sep 20252711 PMAQI
19th Sep 20252312 AMAQI
19th Sep 2025251 AMAQI
19th Sep 2025332 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025324 AMAQI
25°C23/28°C
19th Sep 2025305 AMAQI
19th Sep 2025316 AMAQI
19th Sep 2025317 AMAQI
19th Sep 2025328 AMAQI
19th Sep 2025199 AMAQI
19th Sep 20251410 AMAQI
19th Sep 20251711 AMAQI
19th Sep 20251812 PMAQI
19th Sep 2025201 PMAQI
19th Sep 2025202 PMAQI
19th Sep 2025213 PMAQI
19th Sep 2025244 PMAQI
19th Sep 2025235 PMAQI
19th Sep 2025236 PMAQI
19th Sep 2025237 PMAQI
19th Sep 2025278 PMAQI
19th Sep 2025289 PMAQI
19th Sep 20252710 PMAQI
19th Sep 20252911 PMAQI
20th Sep 20253012 AMAQI
20th Sep 2025301 AMAQI
20th Sep 2025282 AMAQI
20th Sep 2025293 AMAQI
20th Sep 2025284 AMAQI
24°C21/28°C
20th Sep 2025285 AMAQI
20th Sep 2025286 AMAQI
20th Sep 2025287 AMAQI
20th Sep 2025288 AMAQI
20th Sep 2025299 AMAQI
20th Sep 20253010 AMAQI
20th Sep 20253211 AMAQI
20th Sep 20253712 PMAQI
20th Sep 2025431 PMAQI
20th Sep 2025512 PMAQI
20th Sep 2025553 PMAQI
20th Sep 2025494 PMAQI
20th Sep 2025335 PMAQI
20th Sep 2025416 PMAQI
20th Sep 2025557 PMAQI
20th Sep 2025548 PMAQI
20th Sep 2025469 PMAQI
20th Sep 20254010 PMAQI
20th Sep 20253111 PMAQI
21st Sep 20252412 AMAQI
21st Sep 2025251 AMAQI
21st Sep 2025282 AMAQI
21st Sep 2025283 AMAQI
21st Sep 2025304 AMAQI
24°C23/26°C
21st Sep 2025325 AMAQI
21st Sep 2025326 AMAQI
21st Sep 2025317 AMAQI
21st Sep 2025318 AMAQI
21st Sep 2025189 AMAQI
21st Sep 20251410 AMAQI
21st Sep 20251311 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025181 PMAQI
21st Sep 2025162 PMAQI
21st Sep 2025163 PMAQI
21st Sep 2025164 PMAQI
21st Sep 2025185 PMAQI
21st Sep 2025196 PMAQI
21st Sep 2025167 PMAQI
21st Sep 2025188 PMAQI
21st Sep 2025229 PMAQI
21st Sep 20252210 PMAQI
21st Sep 20252211 PMAQI
22nd Sep 20252212 AMAQI
22nd Sep 2025261 AMAQI
22nd Sep 2025282 AMAQI
22nd Sep 2025283 AMAQI
22nd Sep 2025284 AMAQI
24°C20/28°C
22nd Sep 2025275 AMAQI
22nd Sep 2025276 AMAQI
22nd Sep 2025267 AMAQI
22nd Sep 2025268 AMAQI
22nd Sep 2025209 AMAQI
22nd Sep 20251710 AMAQI
22nd Sep 20251611 AMAQI
22nd Sep 20251412 PMAQI
22nd Sep 2025181 PMAQI
22nd Sep 2025202 PMAQI
22nd Sep 2025193 PMAQI
22nd Sep 2025204 PMAQI
22nd Sep 2025235 PMAQI
22nd Sep 2025286 PMAQI
22nd Sep 2025307 PMAQI
22nd Sep 2025308 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252610 PMAQI
22nd Sep 20252811 PMAQI
23rd Sep 20252612 AMAQI
23rd Sep 2025261 AMAQI
23rd Sep 2025252 AMAQI
--°C/°C
5 AM
11 AM
6 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 AM
36AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
9 AM
29AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 36), while the lowest AQI was between 9 AM to 9 AM (Avg. 29).
Night time
Avg. Highest Time
1 AM - 8 PM
36AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
12 AM
33AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 8 PM (Avg. 36), while the lowest AQI was between 12 AM to 12 AM (Avg. 33).
2025 Days Vs Air Quality
Hikari, Yamaguchi, Japan
2025
75%
197
25%
67
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Good
197 DaysModerate
67 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% of 265 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
Hikari, Yamaguchi, 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
29AQI
29AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
33AQI
33AQI
4th January 2025
31AQI
31AQI
5th January 2025
29AQI
29AQI
6th January 2025
42AQI
42AQI
7th January 2025
30AQI
30AQI
8th January 2025
34AQI
34AQI
9th January 2025
28AQI
28AQI
10th January 2025
28AQI
28AQI
11th January 2025
28AQI
28AQI
12th January 2025
30AQI
30AQI
13th January 2025
41AQI
41AQI
14th January 2025
46AQI
46AQI
15th January 2025
40AQI
40AQI
16th January 2025
39AQI
39AQI
17th January 2025
44AQI
44AQI
18th January 2025
33AQI
33AQI
19th January 2025
44AQI
44AQI
20th January 2025
45AQI
45AQI
21st January 2025
53AQI
53AQI
22nd January 2025
69AQI
69AQI
23rd January 2025
73AQI
73AQI
24th January 2025
72AQI
72AQI
25th January 2025
45AQI
45AQI
26th January 2025
43AQI
43AQI
27th January 2025
38AQI
38AQI
28th January 2025
38AQI
38AQI
29th January 2025
31AQI
31AQI
30th January 2025
45AQI
45AQI
31st January 2025
49AQI
49AQI
1st February 2025
53AQI
53AQI
2nd February 2025
35AQI
35AQI
3rd February 2025
50AQI
50AQI
4th February 2025
32AQI
32AQI
5th February 2025
40AQI
40AQI
6th February 2025
31AQI
31AQI
7th February 2025
41AQI
41AQI
8th February 2025
30AQI
30AQI
9th February 2025
34AQI
34AQI
10th February 2025
33AQI
33AQI
11th February 2025
35AQI
35AQI
12th February 2025
39AQI
39AQI
13th February 2025
31AQI
31AQI
14th February 2025
42AQI
42AQI
15th February 2025
31AQI
31AQI
16th February 2025
44AQI
44AQI
17th February 2025
41AQI
41AQI
18th February 2025
35AQI
35AQI
19th February 2025
36AQI
36AQI
20th February 2025
34AQI
34AQI
21st February 2025
36AQI
36AQI
22nd February 2025
39AQI
39AQI
23rd February 2025
39AQI
39AQI
24th February 2025
41AQI
41AQI
25th February 2025
38AQI
38AQI
26th February 2025
49AQI
49AQI
27th February 2025
70AQI
70AQI
28th February 2025
62AQI
62AQI
1st March 2025
71AQI
71AQI
2nd March 2025
55AQI
55AQI
3rd March 2025
44AQI
44AQI
4th March 2025
37AQI
37AQI
5th March 2025
30AQI
30AQI
6th March 2025
34AQI
34AQI
7th March 2025
33AQI
33AQI
8th March 2025
40AQI
40AQI
9th March 2025
40AQI
40AQI
10th March 2025
41AQI
41AQI
11th March 2025
46AQI
46AQI
12th March 2025
52AQI
52AQI
13th March 2025
56AQI
56AQI
14th March 2025
42AQI
42AQI
15th March 2025
38AQI
38AQI
16th March 2025
25AQI
25AQI
17th March 2025
40AQI
40AQI
18th March 2025
37AQI
37AQI
19th March 2025
46AQI
46AQI
20th March 2025
53AQI
53AQI
21st March 2025
58AQI
58AQI
22nd March 2025
68AQI
68AQI
23rd March 2025
69AQI
69AQI
24th March 2025
60AQI
60AQI
25th March 2025
69AQI
69AQI
26th March 2025
73AQI
73AQI
27th March 2025
57AQI
57AQI
28th March 2025
60AQI
60AQI
29th March 2025
51AQI
51AQI
30th March 2025
44AQI
44AQI
31st March 2025
42AQI
42AQI
1st April 2025
43AQI
43AQI
2nd April 2025
36AQI
36AQI
3rd April 2025
28AQI
28AQI
4th April 2025
34AQI
34AQI
5th April 2025
41AQI
41AQI
6th April 2025
46AQI
46AQI
7th April 2025
45AQI
45AQI
8th April 2025
43AQI
43AQI
9th April 2025
60AQI
60AQI
10th April 2025
56AQI
56AQI
11th April 2025
60AQI
60AQI
12th April 2025
57AQI
57AQI
13th April 2025
53AQI
53AQI
14th April 2025
48AQI
48AQI
15th April 2025
38AQI
38AQI
16th April 2025
49AQI
49AQI
17th April 2025
49AQI
49AQI
18th April 2025
59AQI
59AQI
19th April 2025
56AQI
56AQI
20th April 2025
40AQI
40AQI
21st April 2025
46AQI
46AQI
22nd April 2025
43AQI
43AQI
23rd April 2025
31AQI
31AQI
24th April 2025
41AQI
41AQI
25th April 2025
60AQI
60AQI
26th April 2025
55AQI
55AQI
27th April 2025
57AQI
57AQI
28th April 2025
50AQI
50AQI
29th April 2025
51AQI
51AQI
30th April 2025
53AQI
53AQI
1st May 2025
47AQI
47AQI
2nd May 2025
44AQI
44AQI
3rd May 2025
47AQI
47AQI
4th May 2025
42AQI
42AQI
5th May 2025
42AQI
42AQI
6th May 2025
33AQI
33AQI
7th May 2025
36AQI
36AQI
8th May 2025
38AQI
38AQI
9th May 2025
32AQI
32AQI
10th May 2025
36AQI
36AQI
11th May 2025
41AQI
41AQI
12th May 2025
51AQI
51AQI
13th May 2025
54AQI
54AQI
14th May 2025
59AQI
59AQI
15th May 2025
54AQI
54AQI
16th May 2025
53AQI
53AQI
17th May 2025
43AQI
43AQI
18th May 2025
55AQI
55AQI
19th May 2025
58AQI
58AQI
20th May 2025
56AQI
56AQI
21st May 2025
40AQI
40AQI
22nd May 2025
40AQI
40AQI
23rd May 2025
47AQI
47AQI
24th May 2025
33AQI
33AQI
25th May 2025
29AQI
29AQI
26th May 2025
33AQI
33AQI
27th May 2025
42AQI
42AQI
28th May 2025
41AQI
41AQI
29th May 2025
44AQI
44AQI
30th May 2025
43AQI
43AQI
31st May 2025
40AQI
40AQI
1st June 2025
46AQI
46AQI
2nd June 2025
52AQI
52AQI
3rd June 2025
31AQI
31AQI
4th June 2025
46AQI
46AQI
5th June 2025
46AQI
46AQI
6th June 2025
52AQI
52AQI
7th June 2025
57AQI
57AQI
8th June 2025
58AQI
58AQI
9th June 2025
58AQI
58AQI
10th June 2025
35AQI
35AQI
11th June 2025
43AQI
43AQI
12th June 2025
49AQI
49AQI
13th June 2025
47AQI
47AQI
14th June 2025
36AQI
36AQI
15th June 2025
34AQI
34AQI
16th June 2025
35AQI
35AQI
17th June 2025
34AQI
34AQI
18th June 2025
45AQI
45AQI
19th June 2025
45AQI
45AQI
20th June 2025
52AQI
52AQI
21st June 2025
54AQI
54AQI
22nd June 2025
47AQI
47AQI
23rd June 2025
38AQI
38AQI
24th June 2025
40AQI
40AQI
25th June 2025
37AQI
37AQI
26th June 2025
49AQI
49AQI
27th June 2025
52AQI
52AQI
28th June 2025
48AQI
48AQI
29th June 2025
52AQI
52AQI
30th June 2025
53AQI
53AQI
1st July 2025
56AQI
56AQI
2nd July 2025
66AQI
66AQI
3rd July 2025
76AQI
76AQI
4th July 2025
76AQI
76AQI
5th July 2025
71AQI
71AQI
6th July 2025
58AQI
58AQI
7th July 2025
58AQI
58AQI
8th July 2025
62AQI
62AQI
9th July 2025
70AQI
70AQI
10th July 2025
79AQI
79AQI
11th July 2025
67AQI
67AQI
12th July 2025
59AQI
59AQI
13th July 2025
47AQI
47AQI
14th July 2025
41AQI
41AQI
15th July 2025
54AQI
54AQI
16th July 2025
55AQI
55AQI
17th July 2025
41AQI
41AQI
18th July 2025
39AQI
39AQI
19th July 2025
35AQI
35AQI
20th July 2025
33AQI
33AQI
21st July 2025
29AQI
29AQI
22nd July 2025
28AQI
28AQI
23rd July 2025
27AQI
27AQI
24th July 2025
29AQI
29AQI
25th July 2025
30AQI
30AQI
26th July 2025
26AQI
26AQI
27th July 2025
26AQI
26AQI
28th July 2025
26AQI
26AQI
29th July 2025
24AQI
24AQI
30th July 2025
25AQI
25AQI
31st July 2025
29AQI
29AQI
1st August 2025
43AQI
43AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
46AQI
46AQI
4th August 2025
51AQI
51AQI
5th August 2025
48AQI
48AQI
6th August 2025
43AQI
43AQI
7th August 2025
46AQI
46AQI
8th August 2025
45AQI
45AQI
9th August 2025
36AQI
36AQI
10th August 2025
38AQI
38AQI
11th August 2025
30AQI
30AQI
12th August 2025
31AQI
31AQI
13th August 2025
39AQI
39AQI
14th August 2025
42AQI
42AQI
15th August 2025
43AQI
43AQI
16th August 2025
39AQI
39AQI
17th August 2025
41AQI
41AQI
18th August 2025
44AQI
44AQI
19th August 2025
51AQI
51AQI
20th August 2025
46AQI
46AQI
21st August 2025
40AQI
40AQI
22nd August 2025
39AQI
39AQI
23rd August 2025
44AQI
44AQI
24th August 2025
42AQI
42AQI
25th August 2025
42AQI
42AQI
26th August 2025
46AQI
46AQI
27th August 2025
43AQI
43AQI
28th August 2025
44AQI
44AQI
29th August 2025
49AQI
49AQI
30th August 2025
47AQI
47AQI
31st August 2025
44AQI
44AQI
1st September 2025
39AQI
39AQI
2nd September 2025
34AQI
34AQI
3rd September 2025
35AQI
35AQI
4th September 2025
25AQI
25AQI
5th September 2025
21AQI
21AQI
6th September 2025
27AQI
27AQI
7th September 2025
31AQI
31AQI
8th September 2025
30AQI
30AQI
9th September 2025
31AQI
31AQI
10th September 2025
30AQI
30AQI
11th September 2025
29AQI
29AQI
12th September 2025
27AQI
27AQI
13th September 2025
32AQI
32AQI
14th September 2025
29AQI
29AQI
15th September 2025
34AQI
34AQI
16th September 2025
39AQI
39AQI
17th September 2025
36AQI
36AQI
18th September 2025
26AQI
26AQI
19th September 2025
26AQI
26AQI
20th September 2025
37AQI
37AQI
21st September 2025
23AQI
23AQI
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
41AQI
40AQI
49AQI
48AQI
44AQI
46AQI
47AQI
43AQI
31AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202543AQI
27
4
25
3
17
14
18
12
23
8
20
10
17
14
29
2
21
197
67
Highest AQI recorded in
March49AQI
Lowest AQI recorded in
September31AQI
202437AQI
28
3
24
5
20
11
15
13
2
26
5
27
3
31
27
4
27
3
31
24
6
31
311
53
2
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
July28AQI
202341AQI
22
7
2
25
3
16
15
11
19
21
10
22
8
30
1
31
27
3
26
5
21
8
21
10
273
89
2
Highest AQI recorded in
April56AQI
Lowest AQI recorded in
August24AQI
202243AQI
27
4
17
4
17
14
10
7
9
22
22
8
21
1
25
3
25
6
19
11
29
2
222
81
Highest AQI recorded in
May55AQI
Lowest AQI recorded in
August34AQI
202139AQI
28
3
24
4
27
2
20
1
26
5
17
13
28
3
28
3
23
7
28
3
26
4
28
3
303
51
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
January31AQI
202035AQI
13
17
4
17
1
21
9
30
1
14
7
1
14
5
29
2
28
2
29
2
212
33
1
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
October30AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
43AQILeast Polluted Year Recorded
2020(Avg.)
35AQIHikari's annual 2025 AQI (43) shows an average percentage change of 11.1% (worsened AQI) compared to previous years: 2020 (35), 2021 (39), 2022 (43), 2023 (41), 2024 (37).
