Haruecho, Ichikawa, Chiba, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
October Air Quality Analysis
Haruecho, Ichikawa, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
22nd Oct 2022
66AQILowest AQI recorded on
19th Oct 2021
14AQISame Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Oct - 11th Oct 2025
Haruecho, Ichikawa, Chiba, Japan
AQI
Day
Night
.
5 AM10th Oct 2025
5 PM
4 AM11th Oct 2025
Day time
Avg. Highest Time
5PM10th Oct
57AQI
Avg. Lowest Time
5AM10th Oct
41AQI
Night time
Avg. Highest Time
8PM10th Oct
63AQI
Avg. Lowest Time
3AM11th Oct
52AQI
In the last 24 hours,
Haruecho's AQI reached its highest point of 63 at 8 PM during the Night, while the lowest point, 41, was recorded at 5 AM during the Day between 10th Oct and 11th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Haruecho, Ichikawa, Chiba, Japan
SepOct
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
11th Sep 2025375 AMAQI
11th Sep 2025366 AMAQI
11th Sep 2025367 AMAQI
11th Sep 2025378 AMAQI
11th Sep 2025189 AMAQI
11th Sep 20253110 AMAQI
11th Sep 20251911 AMAQI
11th Sep 20252912 PMAQI
11th Sep 2025321 PMAQI
11th Sep 2025372 PMAQI
11th Sep 2025303 PMAQI
11th Sep 2025314 PMAQI
11th Sep 2025335 PMAQI
11th Sep 2025286 PMAQI
11th Sep 2025307 PMAQI
11th Sep 2025308 PMAQI
11th Sep 2025329 PMAQI
11th Sep 20253010 PMAQI
11th Sep 20253011 PMAQI
12th Sep 20253412 AMAQI
12th Sep 2025361 AMAQI
12th Sep 2025362 AMAQI
12th Sep 2025373 AMAQI
12th Sep 2025354 AMAQI
27°C24/29°C
12th Sep 2025345 AMAQI
12th Sep 2025366 AMAQI
12th Sep 2025357 AMAQI
12th Sep 2025348 AMAQI
12th Sep 2025269 AMAQI
12th Sep 20252910 AMAQI
12th Sep 20252211 AMAQI
12th Sep 20252812 PMAQI
12th Sep 2025261 PMAQI
12th Sep 2025272 PMAQI
12th Sep 2025283 PMAQI
12th Sep 2025304 PMAQI
12th Sep 2025355 PMAQI
12th Sep 2025326 PMAQI
12th Sep 2025287 PMAQI
12th Sep 2025288 PMAQI
12th Sep 2025309 PMAQI
12th Sep 20252810 PMAQI
12th Sep 20252811 PMAQI
13th Sep 20252912 AMAQI
13th Sep 2025341 AMAQI
13th Sep 2025352 AMAQI
13th Sep 2025353 AMAQI
13th Sep 2025354 AMAQI
25°C24/28°C
13th Sep 2025345 AMAQI
13th Sep 2025346 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025348 AMAQI
13th Sep 2025269 AMAQI
13th Sep 20252310 AMAQI
13th Sep 20253411 AMAQI
13th Sep 20253112 PMAQI
13th Sep 2025261 PMAQI
13th Sep 2025262 PMAQI
13th Sep 2025273 PMAQI
13th Sep 2025264 PMAQI
13th Sep 2025225 PMAQI
13th Sep 2025206 PMAQI
13th Sep 2025217 PMAQI
13th Sep 2025268 PMAQI
13th Sep 2025279 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20253311 PMAQI
14th Sep 20252912 AMAQI
14th Sep 2025371 AMAQI
14th Sep 2025342 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025344 AMAQI
27°C24/29°C
14th Sep 2025335 AMAQI
14th Sep 2025336 AMAQI
14th Sep 2025347 AMAQI
14th Sep 2025358 AMAQI
14th Sep 2025269 AMAQI
14th Sep 20252710 AMAQI
14th Sep 20253011 AMAQI
14th Sep 20253112 PMAQI
14th Sep 2025311 PMAQI
14th Sep 2025362 PMAQI
14th Sep 2025353 PMAQI
14th Sep 2025404 PMAQI
14th Sep 2025425 PMAQI
14th Sep 2025476 PMAQI
14th Sep 2025517 PMAQI
14th Sep 2025428 PMAQI
14th Sep 2025389 PMAQI
14th Sep 20253710 PMAQI
14th Sep 20253711 PMAQI
15th Sep 20254012 AMAQI
15th Sep 2025371 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025343 AMAQI
15th Sep 2025344 AMAQI
29°C27/31°C
15th Sep 2025335 AMAQI
15th Sep 2025336 AMAQI
15th Sep 2025347 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025429 AMAQI
15th Sep 20254310 AMAQI
15th Sep 20254911 AMAQI
15th Sep 20254112 PMAQI
15th Sep 2025341 PMAQI
15th Sep 2025322 PMAQI
15th Sep 2025343 PMAQI
15th Sep 2025414 PMAQI
15th Sep 2025485 PMAQI
15th Sep 2025406 PMAQI
15th Sep 2025307 PMAQI
15th Sep 2025288 PMAQI
15th Sep 2025339 PMAQI
15th Sep 20253910 PMAQI
15th Sep 20253711 PMAQI
16th Sep 20253212 AMAQI
16th Sep 2025341 AMAQI
16th Sep 2025352 AMAQI
16th Sep 2025343 AMAQI
16th Sep 2025364 AMAQI
28°C26/31°C
16th Sep 2025365 AMAQI
16th Sep 2025366 AMAQI
16th Sep 2025367 AMAQI
16th Sep 2025368 AMAQI
16th Sep 2025429 AMAQI
16th Sep 20254410 AMAQI
16th Sep 20255311 AMAQI
16th Sep 20255812 PMAQI
16th Sep 2025641 PMAQI
16th Sep 2025612 PMAQI
16th Sep 2025573 PMAQI
16th Sep 2025524 PMAQI
16th Sep 2025405 PMAQI
16th Sep 2025276 PMAQI
16th Sep 2025247 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025319 PMAQI
16th Sep 20253210 PMAQI
16th Sep 20253011 PMAQI
17th Sep 20253212 AMAQI
17th Sep 2025341 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025353 AMAQI
17th Sep 2025384 AMAQI
28°C26/31°C
17th Sep 2025425 AMAQI
17th Sep 2025426 AMAQI
17th Sep 2025427 AMAQI
17th Sep 2025428 AMAQI
17th Sep 2025519 AMAQI
17th Sep 20255810 AMAQI
17th Sep 20255811 AMAQI
17th Sep 20255812 PMAQI
17th Sep 2025571 PMAQI
17th Sep 2025592 PMAQI
17th Sep 2025603 PMAQI
17th Sep 2025554 PMAQI
17th Sep 2025585 PMAQI
17th Sep 2025556 PMAQI
17th Sep 2025617 PMAQI
17th Sep 2025528 PMAQI
17th Sep 2025559 PMAQI
17th Sep 20256010 PMAQI
17th Sep 20256011 PMAQI
18th Sep 20256012 AMAQI
18th Sep 2025541 AMAQI
18th Sep 2025362 AMAQI
18th Sep 2025363 AMAQI
18th Sep 2025404 AMAQI
29°C27/32°C
18th Sep 2025435 AMAQI
18th Sep 2025436 AMAQI
18th Sep 2025437 AMAQI
18th Sep 2025438 AMAQI
18th Sep 2025699 AMAQI
18th Sep 20257610 AMAQI
18th Sep 20257611 AMAQI
18th Sep 20257612 PMAQI
18th Sep 2025781 PMAQI
18th Sep 2025722 PMAQI
18th Sep 2025733 PMAQI
18th Sep 2025734 PMAQI
18th Sep 2025565 PMAQI
18th Sep 2025196 PMAQI
18th Sep 2025217 PMAQI
18th Sep 2025248 PMAQI
18th Sep 2025349 PMAQI
18th Sep 20253810 PMAQI
18th Sep 20253611 PMAQI
19th Sep 20253612 AMAQI
19th Sep 2025411 AMAQI
19th Sep 2025472 AMAQI
19th Sep 2025483 AMAQI
19th Sep 2025504 AMAQI
29°C24/33°C
19th Sep 2025545 AMAQI
19th Sep 2025546 AMAQI
19th Sep 2025547 AMAQI
19th Sep 2025558 AMAQI
19th Sep 2025259 AMAQI
19th Sep 20251910 AMAQI
19th Sep 20251911 AMAQI
19th Sep 20252212 PMAQI
19th Sep 2025241 PMAQI
19th Sep 2025232 PMAQI
19th Sep 2025263 PMAQI
19th Sep 2025274 PMAQI
19th Sep 2025285 PMAQI
19th Sep 2025246 PMAQI
19th Sep 2025257 PMAQI
19th Sep 2025308 PMAQI
19th Sep 2025389 PMAQI
19th Sep 20253810 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20253712 AMAQI
20th Sep 2025401 AMAQI
20th Sep 2025492 AMAQI
20th Sep 2025503 AMAQI
20th Sep 2025464 AMAQI
22°C21/23°C
20th Sep 2025445 AMAQI
20th Sep 2025446 AMAQI
20th Sep 2025447 AMAQI
20th Sep 2025448 AMAQI
20th Sep 2025239 AMAQI
20th Sep 20251610 AMAQI
20th Sep 20252011 AMAQI
20th Sep 20252212 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025322 PMAQI
20th Sep 2025353 PMAQI
20th Sep 2025384 PMAQI
20th Sep 2025415 PMAQI
20th Sep 2025466 PMAQI
20th Sep 2025447 PMAQI
20th Sep 2025418 PMAQI
20th Sep 2025359 PMAQI
20th Sep 20253510 PMAQI
20th Sep 20253411 PMAQI
21st Sep 20253712 AMAQI
21st Sep 2025411 AMAQI
21st Sep 2025442 AMAQI
21st Sep 2025453 AMAQI
21st Sep 2025434 AMAQI
25°C23/27°C
21st Sep 2025405 AMAQI
21st Sep 2025406 AMAQI
21st Sep 2025407 AMAQI
21st Sep 2025418 AMAQI
21st Sep 2025269 AMAQI
21st Sep 20251810 AMAQI
21st Sep 20251711 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025141 PMAQI
21st Sep 2025142 PMAQI
21st Sep 2025143 PMAQI
21st Sep 2025144 PMAQI
21st Sep 2025155 PMAQI
21st Sep 2025156 PMAQI
21st Sep 2025167 PMAQI
21st Sep 2025258 PMAQI
21st Sep 2025319 PMAQI
21st Sep 20253210 PMAQI
21st Sep 20253211 PMAQI
22nd Sep 20253012 AMAQI
22nd Sep 2025341 AMAQI
22nd Sep 2025412 AMAQI
22nd Sep 2025423 AMAQI
22nd Sep 2025394 AMAQI
26°C22/31°C
22nd Sep 2025355 AMAQI
22nd Sep 2025366 AMAQI
22nd Sep 2025367 AMAQI
22nd Sep 2025368 AMAQI
22nd Sep 2025219 AMAQI
22nd Sep 20252010 AMAQI
22nd Sep 20251711 AMAQI
22nd Sep 20251912 PMAQI
22nd Sep 2025201 PMAQI
22nd Sep 2025242 PMAQI
22nd Sep 2025233 PMAQI
22nd Sep 2025214 PMAQI
22nd Sep 2025235 PMAQI
22nd Sep 2025226 PMAQI
22nd Sep 2025217 PMAQI
22nd Sep 2025258 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252811 PMAQI
23rd Sep 20253012 AMAQI
23rd Sep 2025331 AMAQI
23rd Sep 2025372 AMAQI
23rd Sep 2025373 AMAQI
23rd Sep 2025354 AMAQI
24°C22/26°C
23rd Sep 2025325 AMAQI
23rd Sep 2025326 AMAQI
23rd Sep 2025327 AMAQI
23rd Sep 2025338 AMAQI
23rd Sep 2025229 AMAQI
23rd Sep 20252110 AMAQI
23rd Sep 20252011 AMAQI
23rd Sep 20252212 PMAQI
23rd Sep 2025211 PMAQI
23rd Sep 2025212 PMAQI
23rd Sep 2025233 PMAQI
23rd Sep 2025194 PMAQI
23rd Sep 2025185 PMAQI
23rd Sep 2025216 PMAQI
23rd Sep 2025197 PMAQI
23rd Sep 2025258 PMAQI
23rd Sep 2025319 PMAQI
23rd Sep 20252910 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252812 AMAQI
24th Sep 2025291 AMAQI
24th Sep 2025342 AMAQI
24th Sep 2025333 AMAQI
24th Sep 2025324 AMAQI
23°C20/26°C
24th Sep 2025315 AMAQI
24th Sep 2025326 AMAQI
24th Sep 2025317 AMAQI
24th Sep 2025318 AMAQI
24th Sep 2025269 AMAQI
24th Sep 20252310 AMAQI
24th Sep 20252211 AMAQI
24th Sep 20252112 PMAQI
24th Sep 2025251 PMAQI
24th Sep 2025282 PMAQI
24th Sep 2025283 PMAQI
24th Sep 2025274 PMAQI
24th Sep 2025275 PMAQI
24th Sep 2025256 PMAQI
24th Sep 2025247 PMAQI
24th Sep 2025278 PMAQI
24th Sep 2025279 PMAQI
24th Sep 20252810 PMAQI
24th Sep 20252811 PMAQI
25th Sep 20252712 AMAQI
25th Sep 2025281 AMAQI
25th Sep 2025322 AMAQI
25th Sep 2025313 AMAQI
25th Sep 2025314 AMAQI
23°C21/27°C
25th Sep 2025305 AMAQI
25th Sep 2025306 AMAQI
25th Sep 2025307 AMAQI
25th Sep 2025308 AMAQI
25th Sep 2025309 AMAQI
25th Sep 20253210 AMAQI
25th Sep 20252811 AMAQI
25th Sep 20254212 PMAQI
25th Sep 2025341 PMAQI
25th Sep 2025312 PMAQI
25th Sep 2025373 PMAQI
25th Sep 2025344 PMAQI
25th Sep 2025335 PMAQI
25th Sep 2025346 PMAQI
25th Sep 2025317 PMAQI
25th Sep 2025298 PMAQI
25th Sep 2025319 PMAQI
25th Sep 20252910 PMAQI
25th Sep 20253211 PMAQI
26th Sep 20253612 AMAQI
26th Sep 2025341 AMAQI
26th Sep 2025312 AMAQI
26th Sep 2025343 AMAQI
26th Sep 2025354 AMAQI
24°C22/27°C
26th Sep 2025365 AMAQI
26th Sep 2025376 AMAQI
26th Sep 2025437 AMAQI
26th Sep 2025468 AMAQI
26th Sep 2025509 AMAQI
26th Sep 20255010 AMAQI
26th Sep 20255411 AMAQI
26th Sep 20256112 PMAQI
26th Sep 2025681 PMAQI
26th Sep 2025672 PMAQI
26th Sep 2025823 PMAQI
26th Sep 2025804 PMAQI
26th Sep 2025915 PMAQI
26th Sep 2025726 PMAQI
26th Sep 2025547 PMAQI
26th Sep 2025558 PMAQI
26th Sep 2025629 PMAQI
26th Sep 20256410 PMAQI
26th Sep 20255711 PMAQI
27th Sep 20255112 AMAQI
27th Sep 2025541 AMAQI
27th Sep 2025452 AMAQI
27th Sep 2025313 AMAQI
27th Sep 2025264 AMAQI
27°C24/31°C
27th Sep 2025255 AMAQI
27th Sep 2025256 AMAQI
27th Sep 2025257 AMAQI
27th Sep 2025278 AMAQI
27th Sep 2025329 AMAQI
27th Sep 20253310 AMAQI
27th Sep 20253211 AMAQI
27th Sep 20253412 PMAQI
27th Sep 2025371 PMAQI
27th Sep 2025342 PMAQI
27th Sep 2025333 PMAQI
27th Sep 2025334 PMAQI
27th Sep 2025335 PMAQI
27th Sep 2025306 PMAQI
27th Sep 2025317 PMAQI
27th Sep 2025308 PMAQI
27th Sep 2025299 PMAQI
27th Sep 20252810 PMAQI
27th Sep 20252811 PMAQI
28th Sep 20253112 AMAQI
28th Sep 2025331 AMAQI
28th Sep 2025282 AMAQI
28th Sep 2025313 AMAQI
28th Sep 2025334 AMAQI
25°C23/27°C
28th Sep 2025335 AMAQI
28th Sep 2025336 AMAQI
28th Sep 2025347 AMAQI
28th Sep 2025378 AMAQI
28th Sep 2025399 AMAQI
28th Sep 20253910 AMAQI
28th Sep 20253911 AMAQI
28th Sep 20253912 PMAQI
28th Sep 2025351 PMAQI
28th Sep 2025372 PMAQI
28th Sep 2025423 PMAQI
28th Sep 2025374 PMAQI
28th Sep 2025305 PMAQI
28th Sep 2025286 PMAQI
28th Sep 2025317 PMAQI
28th Sep 2025308 PMAQI
28th Sep 2025319 PMAQI
28th Sep 20253710 PMAQI
28th Sep 20253911 PMAQI
29th Sep 20253212 AMAQI
29th Sep 2025311 AMAQI
29th Sep 2025232 AMAQI
29th Sep 2025253 AMAQI
29th Sep 2025284 AMAQI
25°C23/27°C
29th Sep 2025245 AMAQI
29th Sep 2025276 AMAQI
29th Sep 2025367 AMAQI
29th Sep 2025428 AMAQI
29th Sep 2025449 AMAQI
29th Sep 20254410 AMAQI
29th Sep 20255111 AMAQI
29th Sep 20255412 PMAQI
29th Sep 2025481 PMAQI
29th Sep 2025512 PMAQI
29th Sep 2025483 PMAQI
29th Sep 2025444 PMAQI
29th Sep 2025375 PMAQI
29th Sep 2025406 PMAQI
29th Sep 2025447 PMAQI
29th Sep 2025418 PMAQI
29th Sep 2025409 PMAQI
29th Sep 20252710 PMAQI
29th Sep 20251911 PMAQI
30th Sep 20252212 AMAQI
30th Sep 2025171 AMAQI
30th Sep 2025172 AMAQI
30th Sep 2025163 AMAQI
30th Sep 2025174 AMAQI
26°C24/30°C
30th Sep 2025225 AMAQI
30th Sep 2025176 AMAQI
30th Sep 2025147 AMAQI
30th Sep 2025168 AMAQI
30th Sep 2025209 AMAQI
30th Sep 20252410 AMAQI
30th Sep 20252511 AMAQI
30th Sep 20252612 PMAQI
30th Sep 2025291 PMAQI
30th Sep 2025312 PMAQI
30th Sep 2025343 PMAQI
30th Sep 2025304 PMAQI
30th Sep 2025355 PMAQI
30th Sep 2025316 PMAQI
30th Sep 2025347 PMAQI
30th Sep 2025308 PMAQI
30th Sep 2025289 PMAQI
30th Sep 20253110 PMAQI
30th Sep 20253111 PMAQI
1st Oct 20252612 AMAQI
1st Oct 2025291 AMAQI
1st Oct 2025232 AMAQI
1st Oct 2025243 AMAQI
1st Oct 2025274 AMAQI
24°C22/27°C
1st Oct 2025235 AMAQI
1st Oct 2025266 AMAQI
1st Oct 2025297 AMAQI
1st Oct 2025228 AMAQI
1st Oct 2025209 AMAQI
1st Oct 20252610 AMAQI
1st Oct 20253011 AMAQI
1st Oct 20253612 PMAQI
1st Oct 2025441 PMAQI
1st Oct 2025462 PMAQI
1st Oct 2025483 PMAQI
1st Oct 2025524 PMAQI
1st Oct 2025525 PMAQI
1st Oct 2025526 PMAQI
1st Oct 2025497 PMAQI
1st Oct 2025448 PMAQI
1st Oct 2025419 PMAQI
1st Oct 20253910 PMAQI
1st Oct 20253711 PMAQI
2nd Oct 20253812 AMAQI
2nd Oct 2025471 AMAQI
2nd Oct 2025532 AMAQI
2nd Oct 2025513 AMAQI
2nd Oct 2025554 AMAQI
21°C20/21°C
2nd Oct 2025545 AMAQI
2nd Oct 2025556 AMAQI
2nd Oct 2025557 AMAQI
2nd Oct 2025568 AMAQI
2nd Oct 2025549 AMAQI
2nd Oct 20255210 AMAQI
2nd Oct 20255311 AMAQI
2nd Oct 20254812 PMAQI
2nd Oct 2025381 PMAQI
2nd Oct 2025432 PMAQI
2nd Oct 2025433 PMAQI
2nd Oct 2025474 PMAQI
2nd Oct 2025465 PMAQI
2nd Oct 2025506 PMAQI
2nd Oct 2025547 PMAQI
2nd Oct 2025568 PMAQI
2nd Oct 2025559 PMAQI
2nd Oct 20254810 PMAQI
2nd Oct 20254711 PMAQI
3rd Oct 20254812 AMAQI
3rd Oct 2025501 AMAQI
3rd Oct 2025512 AMAQI
3rd Oct 2025543 AMAQI
3rd Oct 2025514 AMAQI
23°C20/27°C
3rd Oct 2025485 AMAQI
3rd Oct 2025516 AMAQI
3rd Oct 2025447 AMAQI
3rd Oct 2025398 AMAQI
3rd Oct 2025449 AMAQI
3rd Oct 20254710 AMAQI
3rd Oct 20254411 AMAQI
3rd Oct 20254312 PMAQI
3rd Oct 2025481 PMAQI
3rd Oct 2025482 PMAQI
3rd Oct 2025513 PMAQI
3rd Oct 2025524 PMAQI
3rd Oct 2025545 PMAQI
3rd Oct 2025556 PMAQI
3rd Oct 2025527 PMAQI
3rd Oct 2025468 PMAQI
3rd Oct 2025569 PMAQI
3rd Oct 20255510 PMAQI
3rd Oct 20255911 PMAQI
4th Oct 20256112 AMAQI
4th Oct 2025601 AMAQI
4th Oct 2025522 AMAQI
4th Oct 2025543 AMAQI
4th Oct 2025554 AMAQI
24°C22/26°C
4th Oct 2025565 AMAQI
4th Oct 2025576 AMAQI
4th Oct 2025587 AMAQI
4th Oct 2025648 AMAQI
4th Oct 2025669 AMAQI
4th Oct 20256710 AMAQI
4th Oct 20256611 AMAQI
4th Oct 20255912 PMAQI
4th Oct 2025631 PMAQI
4th Oct 2025602 PMAQI
4th Oct 2025623 PMAQI
4th Oct 2025564 PMAQI
4th Oct 2025445 PMAQI
4th Oct 2025506 PMAQI
4th Oct 2025517 PMAQI
4th Oct 2025548 PMAQI
4th Oct 2025539 PMAQI
4th Oct 20255210 PMAQI
4th Oct 20255711 PMAQI
5th Oct 20256012 AMAQI
5th Oct 2025611 AMAQI
5th Oct 2025582 AMAQI
5th Oct 2025573 AMAQI
5th Oct 2025574 AMAQI
23°C22/26°C
5th Oct 2025565 AMAQI
5th Oct 2025566 AMAQI
5th Oct 2025567 AMAQI
5th Oct 2025538 AMAQI
5th Oct 2025559 AMAQI
5th Oct 20255210 AMAQI
5th Oct 20254611 AMAQI
5th Oct 20253912 PMAQI
5th Oct 2025441 PMAQI
5th Oct 2025562 PMAQI
5th Oct 2025563 PMAQI
5th Oct 2025574 PMAQI
5th Oct 2025625 PMAQI
5th Oct 2025586 PMAQI
5th Oct 2025567 PMAQI
5th Oct 2025588 PMAQI
5th Oct 2025579 PMAQI
5th Oct 20255110 PMAQI
5th Oct 20254111 PMAQI
6th Oct 20254812 AMAQI
6th Oct 2025491 AMAQI
6th Oct 2025422 AMAQI
6th Oct 2025433 AMAQI
6th Oct 2025424 AMAQI
25°C22/27°C
6th Oct 2025395 AMAQI
6th Oct 2025436 AMAQI
6th Oct 2025487 AMAQI
6th Oct 2025548 AMAQI
6th Oct 2025589 AMAQI
6th Oct 20255910 AMAQI
6th Oct 20255811 AMAQI
6th Oct 20255912 PMAQI
6th Oct 2025621 PMAQI
6th Oct 2025572 PMAQI
6th Oct 2025573 PMAQI
6th Oct 2025564 PMAQI
6th Oct 2025545 PMAQI
6th Oct 2025536 PMAQI
6th Oct 2025527 PMAQI
6th Oct 2025548 PMAQI
6th Oct 2025569 PMAQI
6th Oct 20255610 PMAQI
6th Oct 20255611 PMAQI
7th Oct 20255512 AMAQI
7th Oct 2025621 AMAQI
7th Oct 2025642 AMAQI
24°C21/27°C
7th Oct 2025568 PMAQI
7th Oct 2025409 PMAQI
7th Oct 20255510 PMAQI
7th Oct 20255111 PMAQI
8th Oct 20255212 AMAQI
8th Oct 2025501 AMAQI
8th Oct 2025532 AMAQI
8th Oct 2025523 AMAQI
8th Oct 2025484 AMAQI
22°C21/23°C
8th Oct 2025525 AMAQI
8th Oct 2025506 AMAQI
8th Oct 2025507 AMAQI
8th Oct 2025558 AMAQI
8th Oct 2025569 AMAQI
8th Oct 20255510 AMAQI
8th Oct 20254911 AMAQI
8th Oct 20255512 PMAQI
8th Oct 2025491 PMAQI
8th Oct 2025472 PMAQI
8th Oct 2025503 PMAQI
8th Oct 2025584 PMAQI
8th Oct 2025645 PMAQI
8th Oct 2025606 PMAQI
8th Oct 2025587 PMAQI
8th Oct 2025638 PMAQI
8th Oct 2025639 PMAQI
8th Oct 20256410 PMAQI
8th Oct 20255611 PMAQI
9th Oct 20255412 AMAQI
9th Oct 2025561 AMAQI
9th Oct 2025572 AMAQI
9th Oct 2025563 AMAQI
9th Oct 2025554 AMAQI
24°C21/27°C
9th Oct 2025535 AMAQI
9th Oct 2025536 AMAQI
9th Oct 2025527 AMAQI
9th Oct 2025568 AMAQI
9th Oct 2025459 AMAQI
9th Oct 20254210 AMAQI
9th Oct 20254611 AMAQI
9th Oct 20254712 PMAQI
9th Oct 2025441 PMAQI
9th Oct 2025502 PMAQI
9th Oct 2025543 PMAQI
9th Oct 2025574 PMAQI
9th Oct 2025585 PMAQI
9th Oct 2025576 PMAQI
9th Oct 2025567 PMAQI
9th Oct 2025568 PMAQI
9th Oct 2025509 PMAQI
9th Oct 20254510 PMAQI
9th Oct 20254511 PMAQI
10th Oct 20254512 AMAQI
10th Oct 2025491 AMAQI
10th Oct 2025462 AMAQI
10th Oct 2025483 AMAQI
10th Oct 2025434 AMAQI
21°C19/22°C
10th Oct 2025415 AMAQI
10th Oct 2025476 AMAQI
10th Oct 2025487 AMAQI
10th Oct 2025488 AMAQI
10th Oct 2025479 AMAQI
10th Oct 20254910 AMAQI
10th Oct 20255111 AMAQI
10th Oct 20255112 PMAQI
10th Oct 2025511 PMAQI
10th Oct 2025522 PMAQI
10th Oct 2025523 PMAQI
10th Oct 2025544 PMAQI
10th Oct 2025575 PMAQI
10th Oct 2025566 PMAQI
10th Oct 2025567 PMAQI
10th Oct 2025638 PMAQI
10th Oct 2025629 PMAQI
10th Oct 20256110 PMAQI
10th Oct 20255811 PMAQI
11th Oct 20255712 AMAQI
11th Oct 2025561 AMAQI
11th Oct 2025572 AMAQI
11th Oct 2025523 AMAQI
11th Oct 2025544 AMAQI
20°C18/23°C
11th Oct 2025525 AMAQI
5 AM11th Oct 2025506 AMAQI
11th Oct 2025537 AMAQI
11th Oct 2025538 AMAQI
11th Oct 2025479 AMAQI
11th Oct 20255210 AMAQI
11th Oct 20255411 AMAQI
11 AM11th Oct 20255312 PMAQI
11th Oct 2025541 PMAQI
11th Oct 2025502 PMAQI
11th Oct 2025533 PMAQI
11th Oct 2025474 PMAQI
11th Oct 2025395 PMAQI
5 PM11th Oct 2025416 PMAQI
11th Oct 2025287 PMAQI
11th Oct 2025248 PMAQI
11th Oct 2025309 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
12 PM - 5 PM
42AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
9 AM - 11 AM
39AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 5 PM (Avg. 42), while the lowest AQI was between 9 AM to 11 AM (Avg. 39).
Night time
Avg. Highest Time
12 AM - 6 PM
40AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
7 PM - 11 PM
40AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 6 PM (Avg. 40), while the lowest AQI was between 7 PM to 11 PM (Avg. 40).
2025 Days Vs Air Quality
Haruecho, Ichikawa, Chiba, Japan
2025
92%
259
8%
24
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Good
259 DaysModerate
24 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 284 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Haruecho, Ichikawa, Chiba, 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
28AQI
28AQI
2nd January 2025
26AQI
26AQI
3rd January 2025
24AQI
24AQI
4th January 2025
25AQI
25AQI
5th January 2025
23AQI
23AQI
6th January 2025
26AQI
26AQI
7th January 2025
26AQI
26AQI
8th January 2025
26AQI
26AQI
9th January 2025
26AQI
26AQI
10th January 2025
25AQI
25AQI
11th January 2025
24AQI
24AQI
12th January 2025
26AQI
26AQI
13th January 2025
24AQI
24AQI
14th January 2025
26AQI
26AQI
15th January 2025
28AQI
28AQI
16th January 2025
25AQI
25AQI
17th January 2025
31AQI
31AQI
18th January 2025
27AQI
27AQI
19th January 2025
33AQI
33AQI
20th January 2025
30AQI
30AQI
21st January 2025
34AQI
34AQI
22nd January 2025
34AQI
34AQI
23rd January 2025
33AQI
33AQI
24th January 2025
37AQI
37AQI
25th January 2025
33AQI
33AQI
26th January 2025
33AQI
33AQI
27th January 2025
27AQI
27AQI
28th January 2025
30AQI
30AQI
29th January 2025
27AQI
27AQI
30th January 2025
28AQI
28AQI
31st January 2025
27AQI
27AQI
1st February 2025
28AQI
28AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
25AQI
25AQI
4th February 2025
30AQI
30AQI
5th February 2025
27AQI
27AQI
6th February 2025
26AQI
26AQI
7th February 2025
28AQI
28AQI
8th February 2025
29AQI
29AQI
9th February 2025
29AQI
29AQI
10th February 2025
26AQI
26AQI
11th February 2025
30AQI
30AQI
12th February 2025
27AQI
27AQI
13th February 2025
31AQI
31AQI
14th February 2025
27AQI
27AQI
15th February 2025
30AQI
30AQI
16th February 2025
33AQI
33AQI
17th February 2025
33AQI
33AQI
18th February 2025
31AQI
31AQI
19th February 2025
30AQI
30AQI
20th February 2025
29AQI
29AQI
21st February 2025
30AQI
30AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
33AQI
33AQI
26th February 2025
33AQI
33AQI
27th February 2025
37AQI
37AQI
28th February 2025
38AQI
38AQI
1st March 2025
43AQI
43AQI
2nd March 2025
47AQI
47AQI
3rd March 2025
35AQI
35AQI
4th March 2025
34AQI
34AQI
5th March 2025
24AQI
24AQI
6th March 2025
30AQI
30AQI
7th March 2025
31AQI
31AQI
8th March 2025
32AQI
32AQI
9th March 2025
34AQI
34AQI
10th March 2025
34AQI
34AQI
11th March 2025
28AQI
28AQI
12th March 2025
31AQI
31AQI
13th March 2025
30AQI
30AQI
14th March 2025
24AQI
24AQI
15th March 2025
20AQI
20AQI
16th March 2025
18AQI
18AQI
17th March 2025
15AQI
15AQI
18th March 2025
15AQI
15AQI
19th March 2025
15AQI
15AQI
20th March 2025
16AQI
16AQI
21st March 2025
24AQI
24AQI
22nd March 2025
30AQI
30AQI
23rd March 2025
34AQI
34AQI
24th March 2025
33AQI
33AQI
25th March 2025
53AQI
53AQI
26th March 2025
69AQI
69AQI
27th March 2025
62AQI
62AQI
28th March 2025
43AQI
43AQI
29th March 2025
34AQI
34AQI
30th March 2025
39AQI
39AQI
31st March 2025
30AQI
30AQI
1st April 2025
26AQI
26AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
22AQI
22AQI
4th April 2025
21AQI
21AQI
5th April 2025
20AQI
20AQI
6th April 2025
17AQI
17AQI
7th April 2025
19AQI
19AQI
8th April 2025
23AQI
23AQI
9th April 2025
17AQI
17AQI
10th April 2025
27AQI
27AQI
11th April 2025
23AQI
23AQI
12th April 2025
23AQI
23AQI
13th April 2025
19AQI
19AQI
14th April 2025
24AQI
24AQI
15th April 2025
22AQI
22AQI
16th April 2025
21AQI
21AQI
17th April 2025
29AQI
29AQI
18th April 2025
33AQI
33AQI
19th April 2025
36AQI
36AQI
20th April 2025
32AQI
32AQI
21st April 2025
28AQI
28AQI
22nd April 2025
26AQI
26AQI
23rd April 2025
18AQI
18AQI
24th April 2025
21AQI
21AQI
25th April 2025
22AQI
22AQI
26th April 2025
26AQI
26AQI
27th April 2025
27AQI
27AQI
28th April 2025
25AQI
25AQI
29th April 2025
21AQI
21AQI
30th April 2025
26AQI
26AQI
1st May 2025
24AQI
24AQI
2nd May 2025
20AQI
20AQI
3rd May 2025
18AQI
18AQI
4th May 2025
22AQI
22AQI
5th May 2025
19AQI
19AQI
6th May 2025
18AQI
18AQI
7th May 2025
15AQI
15AQI
8th May 2025
17AQI
17AQI
9th May 2025
17AQI
17AQI
10th May 2025
16AQI
16AQI
11th May 2025
17AQI
17AQI
12th May 2025
17AQI
17AQI
13th May 2025
19AQI
19AQI
14th May 2025
19AQI
19AQI
15th May 2025
20AQI
20AQI
16th May 2025
21AQI
21AQI
17th May 2025
20AQI
20AQI
18th May 2025
25AQI
25AQI
19th May 2025
22AQI
22AQI
20th May 2025
33AQI
33AQI
21st May 2025
27AQI
27AQI
22nd May 2025
27AQI
27AQI
23rd May 2025
22AQI
22AQI
24th May 2025
21AQI
21AQI
25th May 2025
18AQI
18AQI
26th May 2025
17AQI
17AQI
27th May 2025
16AQI
16AQI
28th May 2025
15AQI
15AQI
29th May 2025
16AQI
16AQI
30th May 2025
16AQI
16AQI
31st May 2025
13AQI
13AQI
1st June 2025
14AQI
14AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
21AQI
21AQI
4th June 2025
18AQI
18AQI
5th June 2025
23AQI
23AQI
6th June 2025
24AQI
24AQI
7th June 2025
24AQI
24AQI
8th June 2025
27AQI
27AQI
9th June 2025
23AQI
23AQI
10th June 2025
30AQI
30AQI
11th June 2025
24AQI
24AQI
12th June 2025
24AQI
24AQI
13th June 2025
24AQI
24AQI
14th June 2025
20AQI
20AQI
15th June 2025
25AQI
25AQI
16th June 2025
22AQI
22AQI
17th June 2025
32AQI
32AQI
18th June 2025
30AQI
30AQI
19th June 2025
29AQI
29AQI
20th June 2025
26AQI
26AQI
21st June 2025
20AQI
20AQI
22nd June 2025
12AQI
12AQI
23rd June 2025
13AQI
13AQI
24th June 2025
14AQI
14AQI
25th June 2025
15AQI
15AQI
26th June 2025
15AQI
15AQI
27th June 2025
18AQI
18AQI
28th June 2025
17AQI
17AQI
29th June 2025
20AQI
20AQI
30th June 2025
37AQI
37AQI
1st July 2025
38AQI
38AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
41AQI
41AQI
4th July 2025
45AQI
45AQI
5th July 2025
53AQI
53AQI
6th July 2025
70AQI
70AQI
7th July 2025
84AQI
84AQI
8th July 2025
82AQI
82AQI
9th July 2025
78AQI
78AQI
10th July 2025
55AQI
55AQI
11th July 2025
49AQI
49AQI
12th July 2025
50AQI
50AQI
13th July 2025
50AQI
50AQI
14th July 2025
40AQI
40AQI
15th July 2025
38AQI
38AQI
16th July 2025
39AQI
39AQI
17th July 2025
41AQI
41AQI
18th July 2025
36AQI
36AQI
19th July 2025
32AQI
32AQI
20th July 2025
31AQI
31AQI
21st July 2025
33AQI
33AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
33AQI
33AQI
24th July 2025
34AQI
34AQI
25th July 2025
30AQI
30AQI
26th July 2025
29AQI
29AQI
27th July 2025
27AQI
27AQI
28th July 2025
34AQI
34AQI
29th July 2025
32AQI
32AQI
30th July 2025
29AQI
29AQI
31st July 2025
29AQI
29AQI
1st August 2025
33AQI
33AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
44AQI
44AQI
4th August 2025
61AQI
61AQI
5th August 2025
51AQI
51AQI
6th August 2025
52AQI
52AQI
7th August 2025
51AQI
51AQI
8th August 2025
48AQI
48AQI
9th August 2025
50AQI
50AQI
10th August 2025
38AQI
38AQI
11th August 2025
39AQI
39AQI
12th August 2025
35AQI
35AQI
13th August 2025
34AQI
34AQI
14th August 2025
38AQI
38AQI
15th August 2025
35AQI
35AQI
16th August 2025
36AQI
36AQI
17th August 2025
37AQI
37AQI
18th August 2025
44AQI
44AQI
19th August 2025
44AQI
44AQI
20th August 2025
48AQI
48AQI
21st August 2025
50AQI
50AQI
22nd August 2025
50AQI
50AQI
23rd August 2025
48AQI
48AQI
24th August 2025
55AQI
55AQI
25th August 2025
55AQI
55AQI
26th August 2025
52AQI
52AQI
27th August 2025
50AQI
50AQI
28th August 2025
45AQI
45AQI
29th August 2025
51AQI
51AQI
30th August 2025
55AQI
55AQI
31st August 2025
54AQI
54AQI
1st September 2025
44AQI
44AQI
2nd September 2025
37AQI
37AQI
3rd September 2025
37AQI
37AQI
4th September 2025
44AQI
44AQI
5th September 2025
36AQI
36AQI
6th September 2025
29AQI
29AQI
7th September 2025
30AQI
30AQI
8th September 2025
40AQI
40AQI
9th September 2025
43AQI
43AQI
10th September 2025
38AQI
38AQI
11th September 2025
32AQI
32AQI
12th September 2025
31AQI
31AQI
13th September 2025
29AQI
29AQI
14th September 2025
36AQI
36AQI
15th September 2025
37AQI
37AQI
16th September 2025
38AQI
38AQI
17th September 2025
50AQI
50AQI
18th September 2025
48AQI
48AQI
19th September 2025
36AQI
36AQI
20th September 2025
38AQI
38AQI
21st September 2025
29AQI
29AQI
22nd September 2025
28AQI
28AQI
23rd September 2025
27AQI
27AQI
24th September 2025
28AQI
28AQI
25th September 2025
31AQI
31AQI
26th September 2025
50AQI
50AQI
27th September 2025
36AQI
36AQI
28th September 2025
33AQI
33AQI
29th September 2025
37AQI
37AQI
30th September 2025
23AQI
23AQI
1st October 2025
35AQI
35AQI
2nd October 2025
47AQI
47AQI
3rd October 2025
49AQI
49AQI
4th October 2025
57AQI
57AQI
5th October 2025
56AQI
56AQI
6th October 2025
48AQI
48AQI
7th October 2025
53AQI
53AQI
8th October 2025
55AQI
55AQI
9th October 2025
52AQI
52AQI
10th October 2025
49AQI
49AQI
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
28AQI
30AQI
32AQI
24AQI
20AQI
22AQI
43AQI
46AQI
36AQI
50AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
31
28
28
3
30
31
30
25
6
21
10
30
5
5
259
24
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
May20AQI
202436AQI
28
3
27
2
25
6
23
7
29
2
30
27
3
31
24
5
31
29
1
31
335
29
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
December25AQI
202339AQI
26
5
22
6
26
5
23
7
26
5
22
8
26
5
28
3
29
1
30
1
22
7
23
8
303
61
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August28AQI
202231AQI
31
21
31
29
1
31
29
1
19
3
1
28
28
3
22
8
28
3
298
19
Highest AQI recorded in
November38AQI
Lowest AQI recorded in
August22AQI
202122AQI
31
28
30
1
30
29
2
26
4
31
29
2
30
31
30
31
356
9
Highest AQI recorded in
June36AQI
Lowest AQI recorded in
February11AQI
202015AQI
13
21
18
30
31
31
19
31
30
31
255
Highest AQI recorded in
June20AQI
Lowest AQI recorded in
September11AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
39AQILeast Polluted Year Recorded
2020(Avg.)
15AQIHaruecho's annual 2025 AQI (32) shows an average percentage change of 26.07% (worsened AQI) compared to previous years: 2020 (15), 2021 (22), 2022 (31), 2023 (39), 2024 (36).
