Yachiyo, 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+
August Air Quality Analysis
Yachiyo, Chiba, Japan
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
61AQILowest AQI recorded on
25th Aug 2023
16AQISame Day Analysis (3rd August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 19 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2026
Yachiyo, Chiba, Japan
AQI
Day
Night
.
4 AM2nd Aug 2026
6 PM
3 AM3rd Aug 2026
Day time
Avg. Highest Time
9AM2nd Aug
73AQI
Avg. Lowest Time
6PM2nd Aug
18AQI
Night time
Avg. Highest Time
9PM2nd Aug
18AQI
Avg. Lowest Time
1AM3rd Aug
15AQI
In the last 24 hours,
Yachiyo's AQI reached its highest point of 73 at 9 AM during the Day, while the lowest point, 15, was recorded at 1 AM during the Night between 2nd Aug and 3rd Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Yachiyo, Chiba, Japan
JulAug
05th - 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 - 02nd02nd - 03rd03rd
Day
Night
5th Jul 2026154 AMAQI
5th Jul 2026125 AMAQI
5th Jul 2026126 AMAQI
5th Jul 202687 AMAQI
5th Jul 202688 AMAQI
5th Jul 202699 AMAQI
5th Jul 20261310 AMAQI
5th Jul 20261611 AMAQI
5th Jul 20262112 PMAQI
5th Jul 2026221 PMAQI
5th Jul 2026262 PMAQI
5th Jul 2026263 PMAQI
5th Jul 2026234 PMAQI
5th Jul 2026225 PMAQI
5th Jul 2026226 PMAQI
5th Jul 2026277 PMAQI
5th Jul 2026238 PMAQI
5th Jul 2026229 PMAQI
5th Jul 20262210 PMAQI
5th Jul 20262211 PMAQI
6th Jul 20262712 AMAQI
6th Jul 2026311 AMAQI
6th Jul 2026272 AMAQI
6th Jul 2026243 AMAQI
23°C22/25°C
6th Jul 2026274 AMAQI
6th Jul 2026255 AMAQI
6th Jul 2026266 AMAQI
6th Jul 2026267 AMAQI
6th Jul 2026268 AMAQI
6th Jul 2026319 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20262511 AMAQI
6th Jul 20262012 PMAQI
6th Jul 2026181 PMAQI
6th Jul 2026212 PMAQI
6th Jul 2026233 PMAQI
6th Jul 2026234 PMAQI
6th Jul 2026195 PMAQI
6th Jul 2026166 PMAQI
6th Jul 2026207 PMAQI
6th Jul 2026258 PMAQI
6th Jul 2026279 PMAQI
6th Jul 20262710 PMAQI
6th Jul 20262711 PMAQI
7th Jul 20262812 AMAQI
7th Jul 2026291 AMAQI
7th Jul 2026292 AMAQI
7th Jul 2026293 AMAQI
22°C21/24°C
7th Jul 2026284 AMAQI
7th Jul 2026305 AMAQI
7th Jul 2026296 AMAQI
7th Jul 2026267 AMAQI
7th Jul 2026288 AMAQI
7th Jul 2026249 AMAQI
7th Jul 20262410 AMAQI
7th Jul 20262311 AMAQI
7th Jul 20262212 PMAQI
7th Jul 2026211 PMAQI
7th Jul 2026242 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026264 PMAQI
7th Jul 2026275 PMAQI
7th Jul 2026266 PMAQI
7th Jul 2026267 PMAQI
7th Jul 2026268 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262611 PMAQI
8th Jul 20263012 AMAQI
8th Jul 2026301 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026273 AMAQI
24°C20/29°C
8th Jul 2026264 AMAQI
8th Jul 2026265 AMAQI
8th Jul 2026286 AMAQI
8th Jul 2026287 AMAQI
8th Jul 2026278 AMAQI
8th Jul 2026259 AMAQI
8th Jul 20262510 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262312 PMAQI
8th Jul 2026231 PMAQI
8th Jul 2026232 PMAQI
8th Jul 2026273 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026245 PMAQI
8th Jul 2026226 PMAQI
8th Jul 2026197 PMAQI
8th Jul 2026188 PMAQI
8th Jul 2026189 PMAQI
8th Jul 20262210 PMAQI
8th Jul 20262211 PMAQI
9th Jul 20261612 AMAQI
9th Jul 2026221 AMAQI
9th Jul 2026242 AMAQI
9th Jul 2026193 AMAQI
25°C21/29°C
9th Jul 2026264 AMAQI
9th Jul 2026235 AMAQI
9th Jul 2026216 AMAQI
9th Jul 2026267 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026219 AMAQI
9th Jul 20262310 AMAQI
9th Jul 20262311 AMAQI
9th Jul 20262512 PMAQI
9th Jul 2026241 PMAQI
9th Jul 2026702 PMAQI
9th Jul 2026533 PMAQI
9th Jul 2026534 PMAQI
9th Jul 2026485 PMAQI
9th Jul 2026356 PMAQI
9th Jul 2026207 PMAQI
9th Jul 2026108 PMAQI
9th Jul 202689 PMAQI
9th Jul 2026810 PMAQI
9th Jul 2026911 PMAQI
10th Jul 2026912 AMAQI
10th Jul 202681 AMAQI
10th Jul 202682 AMAQI
10th Jul 202693 AMAQI
25°C22/29°C
10th Jul 202684 AMAQI
10th Jul 202695 AMAQI
10th Jul 202686 AMAQI
10th Jul 2026117 AMAQI
10th Jul 2026128 AMAQI
10th Jul 2026199 AMAQI
10th Jul 20262010 AMAQI
10th Jul 20262811 AMAQI
10th Jul 20263612 PMAQI
10th Jul 2026451 PMAQI
10th Jul 2026292 PMAQI
10th Jul 2026303 PMAQI
10th Jul 2026154 PMAQI
10th Jul 2026125 PMAQI
10th Jul 2026116 PMAQI
10th Jul 2026127 PMAQI
10th Jul 2026128 PMAQI
10th Jul 2026129 PMAQI
10th Jul 20261310 PMAQI
10th Jul 2026811 PMAQI
11th Jul 2026812 AMAQI
11th Jul 202681 AMAQI
11th Jul 202672 AMAQI
11th Jul 202683 AMAQI
26°C23/29°C
11th Jul 202684 AMAQI
11th Jul 202685 AMAQI
11th Jul 202686 AMAQI
11th Jul 202697 AMAQI
11th Jul 2026128 AMAQI
11th Jul 2026149 AMAQI
11th Jul 20262710 AMAQI
11th Jul 20262811 AMAQI
11th Jul 20263612 PMAQI
11th Jul 2026391 PMAQI
11th Jul 2026312 PMAQI
11th Jul 2026233 PMAQI
11th Jul 2026264 PMAQI
11th Jul 2026275 PMAQI
11th Jul 2026256 PMAQI
11th Jul 2026277 PMAQI
11th Jul 2026248 PMAQI
11th Jul 2026239 PMAQI
11th Jul 20261110 PMAQI
11th Jul 20261511 PMAQI
12th Jul 20261812 AMAQI
12th Jul 2026301 AMAQI
12th Jul 2026292 AMAQI
12th Jul 2026293 AMAQI
26°C23/28°C
12th Jul 2026264 AMAQI
12th Jul 2026205 AMAQI
12th Jul 2026276 AMAQI
12th Jul 2026287 AMAQI
12th Jul 2026278 AMAQI
12th Jul 2026279 AMAQI
12th Jul 20262810 AMAQI
12th Jul 20262611 AMAQI
12th Jul 20262512 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026222 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026254 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026296 PMAQI
12th Jul 2026277 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026299 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20262811 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026302 AMAQI
13th Jul 2026293 AMAQI
25°C24/27°C
13th Jul 2026294 AMAQI
13th Jul 2026295 AMAQI
13th Jul 2026276 AMAQI
13th Jul 2026297 AMAQI
13th Jul 2026298 AMAQI
13th Jul 2026299 AMAQI
13th Jul 20263010 AMAQI
13th Jul 20262711 AMAQI
13th Jul 20262712 PMAQI
13th Jul 2026241 PMAQI
13th Jul 2026262 PMAQI
13th Jul 2026253 PMAQI
13th Jul 2026324 PMAQI
13th Jul 2026475 PMAQI
13th Jul 2026536 PMAQI
13th Jul 2026527 PMAQI
13th Jul 2026438 PMAQI
13th Jul 2026489 PMAQI
13th Jul 20265010 PMAQI
13th Jul 20264911 PMAQI
14th Jul 20264312 AMAQI
14th Jul 2026501 AMAQI
14th Jul 2026612 AMAQI
14th Jul 2026563 AMAQI
26°C25/30°C
14th Jul 2026504 AMAQI
14th Jul 2026635 AMAQI
14th Jul 2026516 AMAQI
14th Jul 2026437 AMAQI
14th Jul 2026438 AMAQI
14th Jul 2026489 AMAQI
14th Jul 20263710 AMAQI
14th Jul 20263311 AMAQI
14th Jul 20263112 PMAQI
14th Jul 2026651 PMAQI
14th Jul 2026462 PMAQI
14th Jul 2026333 PMAQI
14th Jul 2026324 PMAQI
14th Jul 2026315 PMAQI
14th Jul 2026286 PMAQI
14th Jul 2026297 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026329 PMAQI
14th Jul 20263410 PMAQI
14th Jul 20263611 PMAQI
15th Jul 20263412 AMAQI
15th Jul 2026321 AMAQI
15th Jul 2026322 AMAQI
15th Jul 2026313 AMAQI
27°C24/30°C
15th Jul 2026284 AMAQI
15th Jul 2026305 AMAQI
15th Jul 2026276 AMAQI
15th Jul 2026317 AMAQI
15th Jul 2026318 AMAQI
15th Jul 2026339 AMAQI
15th Jul 20263510 AMAQI
15th Jul 20263611 AMAQI
15th Jul 20266612 PMAQI
15th Jul 2026491 PMAQI
15th Jul 2026512 PMAQI
15th Jul 2026603 PMAQI
15th Jul 2026554 PMAQI
15th Jul 2026535 PMAQI
15th Jul 2026426 PMAQI
15th Jul 2026547 PMAQI
15th Jul 2026488 PMAQI
15th Jul 2026459 PMAQI
15th Jul 20265010 PMAQI
15th Jul 20264311 PMAQI
16th Jul 20265712 AMAQI
16th Jul 2026401 AMAQI
16th Jul 2026412 AMAQI
16th Jul 2026463 AMAQI
28°C25/31°C
16th Jul 2026694 AMAQI
16th Jul 2026785 AMAQI
16th Jul 2026726 AMAQI
16th Jul 2026737 AMAQI
16th Jul 2026768 AMAQI
16th Jul 2026749 AMAQI
16th Jul 20267410 AMAQI
16th Jul 20267511 AMAQI
16th Jul 20268112 PMAQI
16th Jul 2026811 PMAQI
16th Jul 2026862 PMAQI
16th Jul 2026893 PMAQI
16th Jul 2026854 PMAQI
16th Jul 2026815 PMAQI
16th Jul 2026726 PMAQI
16th Jul 2026777 PMAQI
16th Jul 2026718 PMAQI
16th Jul 2026669 PMAQI
16th Jul 20266310 PMAQI
16th Jul 20266211 PMAQI
17th Jul 20266012 AMAQI
17th Jul 2026571 AMAQI
17th Jul 2026562 AMAQI
17th Jul 2026533 AMAQI
29°C26/33°C
17th Jul 2026554 AMAQI
17th Jul 2026535 AMAQI
17th Jul 2026566 AMAQI
17th Jul 2026577 AMAQI
17th Jul 2026568 AMAQI
17th Jul 2026609 AMAQI
17th Jul 20266610 AMAQI
17th Jul 20267211 AMAQI
17th Jul 20267312 PMAQI
17th Jul 2026441 PMAQI
17th Jul 2026182 PMAQI
17th Jul 2026193 PMAQI
17th Jul 2026344 PMAQI
17th Jul 2026485 PMAQI
17th Jul 2026506 PMAQI
17th Jul 2026477 PMAQI
17th Jul 2026438 PMAQI
17th Jul 2026409 PMAQI
17th Jul 20263510 PMAQI
17th Jul 20262511 PMAQI
18th Jul 20262412 AMAQI
18th Jul 2026221 AMAQI
18th Jul 2026222 AMAQI
18th Jul 2026203 AMAQI
28°C26/30°C
18th Jul 2026194 AMAQI
18th Jul 2026155 AMAQI
18th Jul 2026156 AMAQI
18th Jul 2026137 AMAQI
18th Jul 2026188 AMAQI
18th Jul 2026169 AMAQI
18th Jul 20262110 AMAQI
18th Jul 20261711 AMAQI
18th Jul 20261812 PMAQI
18th Jul 2026171 PMAQI
18th Jul 2026172 PMAQI
18th Jul 2026153 PMAQI
18th Jul 2026144 PMAQI
18th Jul 2026145 PMAQI
18th Jul 2026166 PMAQI
18th Jul 2026147 PMAQI
18th Jul 2026138 PMAQI
18th Jul 2026159 PMAQI
18th Jul 20261410 PMAQI
18th Jul 20261511 PMAQI
19th Jul 20261512 AMAQI
19th Jul 2026171 AMAQI
19th Jul 2026162 AMAQI
19th Jul 2026143 AMAQI
27°C25/29°C
19th Jul 2026144 AMAQI
19th Jul 2026145 AMAQI
19th Jul 2026136 AMAQI
19th Jul 2026187 AMAQI
19th Jul 2026228 AMAQI
19th Jul 2026239 AMAQI
19th Jul 20262010 AMAQI
19th Jul 20262211 AMAQI
19th Jul 20262412 PMAQI
19th Jul 2026241 PMAQI
19th Jul 2026242 PMAQI
19th Jul 2026233 PMAQI
19th Jul 2026254 PMAQI
19th Jul 2026255 PMAQI
19th Jul 2026346 PMAQI
19th Jul 2026367 PMAQI
19th Jul 2026368 PMAQI
19th Jul 2026349 PMAQI
19th Jul 20263810 PMAQI
19th Jul 20263611 PMAQI
20th Jul 20263112 AMAQI
20th Jul 2026321 AMAQI
20th Jul 2026312 AMAQI
20th Jul 2026353 AMAQI
27°C24/29°C
20th Jul 2026324 AMAQI
20th Jul 2026355 AMAQI
20th Jul 2026356 AMAQI
20th Jul 2026337 AMAQI
20th Jul 2026298 AMAQI
20th Jul 2026329 AMAQI
20th Jul 20264010 AMAQI
20th Jul 20263711 AMAQI
20th Jul 20263412 PMAQI
20th Jul 2026321 PMAQI
20th Jul 2026312 PMAQI
20th Jul 2026483 PMAQI
20th Jul 2026574 PMAQI
20th Jul 2026475 PMAQI
20th Jul 2026436 PMAQI
20th Jul 2026447 PMAQI
20th Jul 2026438 PMAQI
20th Jul 2026419 PMAQI
20th Jul 20264010 PMAQI
20th Jul 20263711 PMAQI
21st Jul 20263312 AMAQI
21st Jul 2026321 AMAQI
21st Jul 2026332 AMAQI
21st Jul 2026353 AMAQI
29°C25/33°C
21st Jul 2026364 AMAQI
21st Jul 2026375 AMAQI
21st Jul 2026346 AMAQI
21st Jul 2026327 AMAQI
21st Jul 2026338 AMAQI
21st Jul 2026379 AMAQI
21st Jul 20265710 AMAQI
21st Jul 20265211 AMAQI
21st Jul 2026571 PMAQI
21st Jul 2026572 PMAQI
21st Jul 2026673 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026555 PMAQI
21st Jul 2026536 PMAQI
21st Jul 2026887 PMAQI
21st Jul 2026468 PMAQI
21st Jul 2026439 PMAQI
21st Jul 20264810 PMAQI
21st Jul 20265311 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026541 AMAQI
22nd Jul 2026632 AMAQI
22nd Jul 2026643 AMAQI
29°C26/34°C
22nd Jul 2026654 AMAQI
22nd Jul 2026615 AMAQI
22nd Jul 2026546 AMAQI
22nd Jul 2026587 AMAQI
22nd Jul 2026638 AMAQI
22nd Jul 2026669 AMAQI
22nd Jul 20266610 AMAQI
22nd Jul 20266811 AMAQI
22nd Jul 20267812 PMAQI
22nd Jul 2026811 PMAQI
22nd Jul 2026772 PMAQI
22nd Jul 2026843 PMAQI
22nd Jul 2026804 PMAQI
22nd Jul 2026675 PMAQI
22nd Jul 2026656 PMAQI
22nd Jul 2026657 PMAQI
22nd Jul 2026648 PMAQI
22nd Jul 2026799 PMAQI
22nd Jul 20268110 PMAQI
22nd Jul 20267911 PMAQI
23rd Jul 20267012 AMAQI
23rd Jul 2026621 AMAQI
23rd Jul 2026652 AMAQI
23rd Jul 2026613 AMAQI
29°C26/33°C
23rd Jul 2026584 AMAQI
23rd Jul 2026615 AMAQI
23rd Jul 2026646 AMAQI
23rd Jul 2026667 AMAQI
23rd Jul 2026678 AMAQI
23rd Jul 2026659 AMAQI
23rd Jul 20266910 AMAQI
23rd Jul 20267411 AMAQI
23rd Jul 20267912 PMAQI
23rd Jul 2026851 PMAQI
23rd Jul 2026792 PMAQI
23rd Jul 2026733 PMAQI
23rd Jul 2026634 PMAQI
23rd Jul 2026635 PMAQI
23rd Jul 2026486 PMAQI
23rd Jul 2026347 PMAQI
23rd Jul 2026288 PMAQI
23rd Jul 2026239 PMAQI
23rd Jul 20262210 PMAQI
23rd Jul 20262411 PMAQI
24th Jul 20262612 AMAQI
24th Jul 2026241 AMAQI
24th Jul 2026242 AMAQI
24th Jul 2026223 AMAQI
31°C27/36°C
24th Jul 2026244 AMAQI
24th Jul 2026265 AMAQI
24th Jul 2026246 AMAQI
24th Jul 2026277 AMAQI
24th Jul 2026358 AMAQI
24th Jul 2026449 AMAQI
24th Jul 20263810 AMAQI
24th Jul 20263711 AMAQI
24th Jul 20263812 PMAQI
24th Jul 2026501 PMAQI
24th Jul 2026502 PMAQI
24th Jul 2026433 PMAQI
24th Jul 2026364 PMAQI
24th Jul 2026295 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026237 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026229 PMAQI
24th Jul 20262210 PMAQI
24th Jul 20262511 PMAQI
25th Jul 20263012 AMAQI
25th Jul 2026271 AMAQI
25th Jul 2026282 AMAQI
25th Jul 2026253 AMAQI
29°C26/33°C
25th Jul 2026264 AMAQI
25th Jul 2026235 AMAQI
25th Jul 2026236 AMAQI
25th Jul 2026277 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026399 AMAQI
25th Jul 20264810 AMAQI
25th Jul 20265211 AMAQI
25th Jul 20265412 PMAQI
25th Jul 2026531 PMAQI
25th Jul 2026532 PMAQI
25th Jul 2026513 PMAQI
25th Jul 2026444 PMAQI
25th Jul 2026395 PMAQI
25th Jul 2026266 PMAQI
25th Jul 2026227 PMAQI
25th Jul 2026338 PMAQI
25th Jul 2026319 PMAQI
25th Jul 20263610 PMAQI
25th Jul 20263811 PMAQI
26th Jul 20263912 AMAQI
26th Jul 2026391 AMAQI
26th Jul 2026372 AMAQI
26th Jul 2026373 AMAQI
28°C24/33°C
26th Jul 2026334 AMAQI
26th Jul 2026335 AMAQI
26th Jul 2026346 AMAQI
26th Jul 2026327 AMAQI
26th Jul 2026358 AMAQI
26th Jul 2026329 AMAQI
26th Jul 20262210 AMAQI
26th Jul 20263411 AMAQI
26th Jul 20263712 PMAQI
26th Jul 2026461 PMAQI
26th Jul 2026512 PMAQI
26th Jul 2026543 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026405 PMAQI
26th Jul 2026306 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026338 PMAQI
26th Jul 2026279 PMAQI
26th Jul 20263010 PMAQI
26th Jul 20262711 PMAQI
27th Jul 20263512 AMAQI
27th Jul 2026291 AMAQI
27th Jul 2026272 AMAQI
27th Jul 2026183 AMAQI
27°C24/31°C
27th Jul 2026224 AMAQI
27th Jul 2026205 AMAQI
27th Jul 2026206 AMAQI
27th Jul 2026217 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026229 AMAQI
27th Jul 20262810 AMAQI
27th Jul 20263011 AMAQI
27th Jul 20262112 PMAQI
27th Jul 2026291 PMAQI
27th Jul 2026312 PMAQI
27th Jul 2026313 PMAQI
27th Jul 2026294 PMAQI
27th Jul 2026285 PMAQI
27th Jul 2026306 PMAQI
27th Jul 2026297 PMAQI
27th Jul 2026298 PMAQI
27th Jul 2026279 PMAQI
27th Jul 20263110 PMAQI
27th Jul 20263311 PMAQI
28th Jul 20263212 AMAQI
28th Jul 2026311 AMAQI
28th Jul 2026292 AMAQI
28th Jul 2026293 AMAQI
26°C23/29°C
28th Jul 2026324 AMAQI
28th Jul 2026325 AMAQI
28th Jul 2026316 AMAQI
28th Jul 2026307 AMAQI
28th Jul 2026298 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20263110 AMAQI
28th Jul 20263511 AMAQI
28th Jul 20263312 PMAQI
28th Jul 2026331 PMAQI
28th Jul 2026372 PMAQI
28th Jul 2026373 PMAQI
28th Jul 2026334 PMAQI
28th Jul 2026375 PMAQI
28th Jul 2026316 PMAQI
28th Jul 2026307 PMAQI
28th Jul 2026318 PMAQI
28th Jul 2026369 PMAQI
28th Jul 20263210 PMAQI
28th Jul 20264211 PMAQI
29th Jul 20265012 AMAQI
29th Jul 2026511 AMAQI
29th Jul 2026532 AMAQI
29th Jul 2026373 AMAQI
26°C23/30°C
29th Jul 2026524 AMAQI
29th Jul 2026515 AMAQI
29th Jul 2026536 AMAQI
29th Jul 2026497 AMAQI
29th Jul 2026398 AMAQI
29th Jul 2026469 AMAQI
29th Jul 20264010 AMAQI
29th Jul 20262911 AMAQI
29th Jul 20263112 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026302 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026284 PMAQI
29th Jul 2026285 PMAQI
29th Jul 2026266 PMAQI
29th Jul 2026287 PMAQI
29th Jul 2026248 PMAQI
29th Jul 2026269 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20263311 PMAQI
30th Jul 20262912 AMAQI
30th Jul 2026291 AMAQI
30th Jul 2026312 AMAQI
30th Jul 2026273 AMAQI
28°C24/34°C
30th Jul 2026314 AMAQI
30th Jul 2026315 AMAQI
30th Jul 2026316 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026278 AMAQI
30th Jul 2026249 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20263211 AMAQI
30th Jul 20263312 PMAQI
30th Jul 2026371 PMAQI
30th Jul 2026452 PMAQI
30th Jul 2026523 PMAQI
30th Jul 2026514 PMAQI
30th Jul 2026525 PMAQI
30th Jul 2026566 PMAQI
30th Jul 2026567 PMAQI
30th Jul 2026508 PMAQI
30th Jul 2026459 PMAQI
30th Jul 20265210 PMAQI
30th Jul 20265511 PMAQI
31st Jul 20265412 AMAQI
31st Jul 2026481 AMAQI
31st Jul 2026352 AMAQI
31st Jul 2026333 AMAQI
30°C27/34°C
31st Jul 2026364 AMAQI
31st Jul 2026405 AMAQI
31st Jul 2026396 AMAQI
31st Jul 2026427 AMAQI
31st Jul 2026398 AMAQI
31st Jul 2026429 AMAQI
31st Jul 20264310 AMAQI
31st Jul 20264911 AMAQI
31st Jul 20265212 PMAQI
31st Jul 2026551 PMAQI
31st Jul 2026492 PMAQI
31st Jul 2026433 PMAQI
31st Jul 2026434 PMAQI
31st Jul 2026445 PMAQI
31st Jul 2026506 PMAQI
31st Jul 2026507 PMAQI
31st Jul 2026438 PMAQI
31st Jul 2026449 PMAQI
31st Jul 20264510 PMAQI
31st Jul 20264511 PMAQI
1st Aug 20264812 AMAQI
1st Aug 2026481 AMAQI
1st Aug 2026482 AMAQI
1st Aug 2026523 AMAQI
30°C27/34°C
1st Aug 2026544 AMAQI
1st Aug 2026555 AMAQI
1st Aug 2026556 AMAQI
1st Aug 2026547 AMAQI
1st Aug 2026548 AMAQI
1st Aug 2026619 AMAQI
1st Aug 20266610 AMAQI
1st Aug 20266611 AMAQI
1st Aug 20266812 PMAQI
1st Aug 2026711 PMAQI
1st Aug 2026692 PMAQI
1st Aug 2026663 PMAQI
1st Aug 2026634 PMAQI
1st Aug 2026585 PMAQI
1st Aug 2026626 PMAQI
1st Aug 2026677 PMAQI
1st Aug 2026678 PMAQI
1st Aug 2026699 PMAQI
1st Aug 20266710 PMAQI
1st Aug 20268011 PMAQI
2nd Aug 20266612 AMAQI
2nd Aug 2026651 AMAQI
2nd Aug 2026652 AMAQI
2nd Aug 2026623 AMAQI
30°C26/35°C
2nd Aug 2026634 AMAQI
2nd Aug 2026665 AMAQI
2nd Aug 2026676 AMAQI
2nd Aug 2026667 AMAQI
2nd Aug 2026708 AMAQI
2nd Aug 2026739 AMAQI
2nd Aug 20266410 AMAQI
2nd Aug 20266011 AMAQI
2nd Aug 20265112 PMAQI
2nd Aug 2026451 PMAQI
2nd Aug 2026412 PMAQI
2nd Aug 2026383 PMAQI
2nd Aug 2026304 PMAQI
2nd Aug 2026205 PMAQI
2nd Aug 2026186 PMAQI
2nd Aug 2026167 PMAQI
2nd Aug 2026168 PMAQI
2nd Aug 2026189 PMAQI
2nd Aug 20261610 PMAQI
2nd Aug 20261711 PMAQI
3rd Aug 20261712 AMAQI
3rd Aug 2026151 AMAQI
3rd Aug 2026162 AMAQI
3rd Aug 2026163 AMAQI
28°C24/33°C
3rd Aug 2026184 AMAQI
4 AM3rd Aug 2026185 AMAQI
3rd Aug 2026216 AMAQI
3rd Aug 2026167 AMAQI
3rd Aug 2026198 AMAQI
3rd Aug 2026199 AMAQI
3rd Aug 20261810 AMAQI
3rd Aug 20261811 AMAQI
11 AM3rd Aug 20262112 PMAQI
3rd Aug 2026231 PMAQI
3rd Aug 2026312 PMAQI
3rd Aug 2026253 PMAQI
3rd Aug 2026224 PMAQI
3rd Aug 2026215 PMAQI
3rd Aug 2026186 PMAQI
6 PM3rd Aug 2026197 PMAQI
3rd Aug 2026198 PMAQI
3rd Aug 2026189 PMAQI
3rd Aug 20261910 PMAQI
3rd Aug 20262011 PMAQI
11 PM3 AM
25°C23/27°C
Day time
Avg. Highest Time
12 PM - 3 PM
41AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 9 AM
35AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 3 PM (Avg. 41), while the lowest AQI was between 4 AM to 9 AM (Avg. 35).
Night time
Avg. Highest Time
7 PM
36AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 36), while the lowest AQI was between 3 AM to 3 AM (Avg. 32).
2026 Days Vs Air Quality
Yachiyo, Chiba, Japan
2026
87%
186
13%
29
Total number of days with different AQI categories in last 215 days in 2026 (150 days remaining)
Good
186 DaysModerate
29 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 215 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
Yachiyo, Chiba, 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
15AQI (US)
15AQI (US)
2nd January 2026
25AQI (US)
25AQI (US)
3rd January 2026
18AQI (US)
18AQI (US)
4th January 2026
25AQI (US)
25AQI (US)
5th January 2026
50AQI (US)
50AQI (US)
6th January 2026
19AQI (US)
19AQI (US)
7th January 2026
33AQI (US)
33AQI (US)
8th January 2026
41AQI (US)
41AQI (US)
9th January 2026
18AQI (US)
18AQI (US)
10th January 2026
36AQI (US)
36AQI (US)
11th January 2026
32AQI (US)
32AQI (US)
12th January 2026
23AQI (US)
23AQI (US)
13th January 2026
41AQI (US)
41AQI (US)
14th January 2026
14AQI (US)
14AQI (US)
15th January 2026
33AQI (US)
33AQI (US)
16th January 2026
49AQI (US)
49AQI (US)
17th January 2026
52AQI (US)
52AQI (US)
18th January 2026
34AQI (US)
34AQI (US)
19th January 2026
46AQI (US)
46AQI (US)
20th January 2026
50AQI (US)
50AQI (US)
21st January 2026
20AQI (US)
20AQI (US)
22nd January 2026
31AQI (US)
31AQI (US)
23rd January 2026
40AQI (US)
40AQI (US)
24th January 2026
38AQI (US)
38AQI (US)
25th January 2026
24AQI (US)
24AQI (US)
26th January 2026
20AQI (US)
20AQI (US)
27th January 2026
37AQI (US)
37AQI (US)
28th January 2026
35AQI (US)
35AQI (US)
29th January 2026
17AQI (US)
17AQI (US)
30th January 2026
23AQI (US)
23AQI (US)
31st January 2026
36AQI (US)
36AQI (US)
1st February 2026
36AQI (US)
36AQI (US)
2nd February 2026
39AQI (US)
39AQI (US)
3rd February 2026
27AQI (US)
27AQI (US)
4th February 2026
39AQI (US)
39AQI (US)
5th February 2026
63AQI (US)
63AQI (US)
6th February 2026
64AQI (US)
64AQI (US)
7th February 2026
13AQI (US)
13AQI (US)
8th February 2026
10AQI (US)
10AQI (US)
9th February 2026
33AQI (US)
33AQI (US)
10th February 2026
37AQI (US)
37AQI (US)
11th February 2026
49AQI (US)
49AQI (US)
12th February 2026
31AQI (US)
31AQI (US)
13th February 2026
44AQI (US)
44AQI (US)
14th February 2026
55AQI (US)
55AQI (US)
15th February 2026
56AQI (US)
56AQI (US)
16th February 2026
52AQI (US)
52AQI (US)
17th February 2026
16AQI (US)
16AQI (US)
18th February 2026
31AQI (US)
31AQI (US)
19th February 2026
25AQI (US)
25AQI (US)
20th February 2026
29AQI (US)
29AQI (US)
21st February 2026
42AQI (US)
42AQI (US)
22nd February 2026
47AQI (US)
47AQI (US)
23rd February 2026
30AQI (US)
30AQI (US)
24th February 2026
34AQI (US)
34AQI (US)
25th February 2026
28AQI (US)
28AQI (US)
26th February 2026
20AQI (US)
20AQI (US)
27th February 2026
43AQI (US)
43AQI (US)
28th February 2026
44AQI (US)
44AQI (US)
1st March 2026
33AQI (US)
33AQI (US)
2nd March 2026
73AQI (US)
73AQI (US)
3rd March 2026
43AQI (US)
43AQI (US)
4th March 2026
56AQI (US)
56AQI (US)
5th March 2026
55AQI (US)
55AQI (US)
6th March 2026
49AQI (US)
49AQI (US)
7th March 2026
45AQI (US)
45AQI (US)
8th March 2026
41AQI (US)
41AQI (US)
9th March 2026
49AQI (US)
49AQI (US)
10th March 2026
57AQI (US)
57AQI (US)
11th March 2026
57AQI (US)
57AQI (US)
12th March 2026
67AQI (US)
67AQI (US)
13th March 2026
41AQI (US)
41AQI (US)
14th March 2026
47AQI (US)
47AQI (US)
15th March 2026
53AQI (US)
53AQI (US)
16th March 2026
43AQI (US)
43AQI (US)
17th March 2026
36AQI (US)
36AQI (US)
18th March 2026
46AQI (US)
46AQI (US)
19th March 2026
39AQI (US)
39AQI (US)
20th March 2026
32AQI (US)
32AQI (US)
21st March 2026
42AQI (US)
42AQI (US)
22nd March 2026
48AQI (US)
48AQI (US)
23rd March 2026
49AQI (US)
49AQI (US)
24th March 2026
45AQI (US)
45AQI (US)
25th March 2026
56AQI (US)
56AQI (US)
26th March 2026
30AQI (US)
30AQI (US)
27th March 2026
29AQI (US)
29AQI (US)
28th March 2026
50AQI (US)
50AQI (US)
29th March 2026
54AQI (US)
54AQI (US)
30th March 2026
54AQI (US)
54AQI (US)
31st March 2026
24AQI (US)
24AQI (US)
1st April 2026
25AQI (US)
25AQI (US)
2nd April 2026
25AQI (US)
25AQI (US)
3rd April 2026
43AQI (US)
43AQI (US)
4th April 2026
46AQI (US)
46AQI (US)
5th April 2026
38AQI (US)
38AQI (US)
6th April 2026
29AQI (US)
29AQI (US)
7th April 2026
26AQI (US)
26AQI (US)
8th April 2026
22AQI (US)
22AQI (US)
9th April 2026
30AQI (US)
30AQI (US)
10th April 2026
47AQI (US)
47AQI (US)
11th April 2026
40AQI (US)
40AQI (US)
12th April 2026
25AQI (US)
25AQI (US)
13th April 2026
35AQI (US)
35AQI (US)
14th April 2026
32AQI (US)
32AQI (US)
15th April 2026
35AQI (US)
35AQI (US)
16th April 2026
34AQI (US)
34AQI (US)
17th April 2026
35AQI (US)
35AQI (US)
18th April 2026
30AQI (US)
30AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
35AQI (US)
35AQI (US)
21st April 2026
38AQI (US)
38AQI (US)
22nd April 2026
45AQI (US)
45AQI (US)
23rd April 2026
37AQI (US)
37AQI (US)
24th April 2026
32AQI (US)
32AQI (US)
25th April 2026
45AQI (US)
45AQI (US)
26th April 2026
51AQI (US)
51AQI (US)
27th April 2026
48AQI (US)
48AQI (US)
28th April 2026
42AQI (US)
42AQI (US)
29th April 2026
38AQI (US)
38AQI (US)
30th April 2026
31AQI (US)
31AQI (US)
1st May 2026
46AQI (US)
46AQI (US)
2nd May 2026
48AQI (US)
48AQI (US)
3rd May 2026
44AQI (US)
44AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
23AQI (US)
23AQI (US)
6th May 2026
29AQI (US)
29AQI (US)
7th May 2026
26AQI (US)
26AQI (US)
8th May 2026
24AQI (US)
24AQI (US)
9th May 2026
21AQI (US)
21AQI (US)
10th May 2026
28AQI (US)
28AQI (US)
11th May 2026
28AQI (US)
28AQI (US)
12th May 2026
32AQI (US)
32AQI (US)
13th May 2026
38AQI (US)
38AQI (US)
14th May 2026
35AQI (US)
35AQI (US)
15th May 2026
34AQI (US)
34AQI (US)
16th May 2026
86AQI (US)
86AQI (US)
17th May 2026
69AQI (US)
69AQI (US)
18th May 2026
53AQI (US)
53AQI (US)
19th May 2026
50AQI (US)
50AQI (US)
20th May 2026
62AQI (US)
62AQI (US)
21st May 2026
59AQI (US)
59AQI (US)
22nd May 2026
60AQI (US)
60AQI (US)
23rd May 2026
53AQI (US)
53AQI (US)
24th May 2026
58AQI (US)
58AQI (US)
25th May 2026
47AQI (US)
47AQI (US)
26th May 2026
39AQI (US)
39AQI (US)
27th May 2026
24AQI (US)
24AQI (US)
28th May 2026
26AQI (US)
26AQI (US)
29th May 2026
25AQI (US)
25AQI (US)
30th May 2026
24AQI (US)
24AQI (US)
31st May 2026
26AQI (US)
26AQI (US)
1st June 2026
33AQI (US)
33AQI (US)
2nd June 2026
16AQI (US)
16AQI (US)
3rd June 2026
16AQI (US)
16AQI (US)
4th June 2026
22AQI (US)
22AQI (US)
5th June 2026
21AQI (US)
21AQI (US)
6th June 2026
21AQI (US)
21AQI (US)
7th June 2026
22AQI (US)
22AQI (US)
8th June 2026
22AQI (US)
22AQI (US)
9th June 2026
24AQI (US)
24AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
24AQI (US)
24AQI (US)
12th June 2026
23AQI (US)
23AQI (US)
13th June 2026
40AQI (US)
40AQI (US)
14th June 2026
42AQI (US)
42AQI (US)
15th June 2026
11AQI (US)
11AQI (US)
16th June 2026
20AQI (US)
20AQI (US)
17th June 2026
24AQI (US)
24AQI (US)
18th June 2026
24AQI (US)
24AQI (US)
19th June 2026
27AQI (US)
27AQI (US)
20th June 2026
22AQI (US)
22AQI (US)
21st June 2026
20AQI (US)
20AQI (US)
22nd June 2026
19AQI (US)
19AQI (US)
23rd June 2026
21AQI (US)
21AQI (US)
24th June 2026
21AQI (US)
21AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
30AQI (US)
30AQI (US)
27th June 2026
26AQI (US)
26AQI (US)
28th June 2026
27AQI (US)
27AQI (US)
29th June 2026
26AQI (US)
26AQI (US)
30th June 2026
23AQI (US)
23AQI (US)
1st July 2026
33AQI (US)
33AQI (US)
2nd July 2026
20AQI (US)
20AQI (US)
3rd July 2026
19AQI (US)
19AQI (US)
4th July 2026
37AQI (US)
37AQI (US)
5th July 2026
18AQI (US)
18AQI (US)
6th July 2026
25AQI (US)
25AQI (US)
7th July 2026
26AQI (US)
26AQI (US)
8th July 2026
25AQI (US)
25AQI (US)
9th July 2026
27AQI (US)
27AQI (US)
10th July 2026
16AQI (US)
16AQI (US)
11th July 2026
19AQI (US)
19AQI (US)
12th July 2026
26AQI (US)
26AQI (US)
13th July 2026
34AQI (US)
34AQI (US)
14th July 2026
42AQI (US)
42AQI (US)
15th July 2026
42AQI (US)
42AQI (US)
16th July 2026
70AQI (US)
70AQI (US)
17th July 2026
49AQI (US)
49AQI (US)
18th July 2026
17AQI (US)
17AQI (US)
19th July 2026
23AQI (US)
23AQI (US)
20th July 2026
38AQI (US)
38AQI (US)
21st July 2026
47AQI (US)
47AQI (US)
22nd July 2026
68AQI (US)
68AQI (US)
23rd July 2026
59AQI (US)
59AQI (US)
24th July 2026
31AQI (US)
31AQI (US)
25th July 2026
36AQI (US)
36AQI (US)
26th July 2026
36AQI (US)
36AQI (US)
27th July 2026
27AQI (US)
27AQI (US)
28th July 2026
32AQI (US)
32AQI (US)
29th July 2026
36AQI (US)
36AQI (US)
30th July 2026
39AQI (US)
39AQI (US)
31st July 2026
44AQI (US)
44AQI (US)
1st August 2026
61AQI (US)
61AQI (US)
2nd August 2026
46AQI (US)
46AQI (US)
3rd August 2026
19AQI (US)
19AQI (US)
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
31AQI (US)
37AQI (US)
47AQI (US)
36AQI (US)
40AQI (US)
24AQI (US)
34AQI (US)
42AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202636AQI (US)
30
1
23
5
21
10
29
1
23
8
30
28
3
2
1
186
29
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202541AQI (US)
28
3
27
1
25
6
28
2
30
1
29
1
25
6
23
8
30
15
16
17
13
18
13
295
70
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
May32AQI (US)
202439AQI (US)
23
8
25
4
25
6
23
7
28
3
28
2
17
14
30
1
25
5
29
2
27
3
30
1
310
56
Highest AQI (US) recorded in
July49AQI (US)
Lowest AQI (US) recorded in
August30AQI (US)
202339AQI (US)
21
9
19
9
27
4
22
8
29
2
23
7
26
5
30
1
30
30
1
21
8
23
8
301
62
Highest AQI (US) recorded in
April46AQI (US)
Lowest AQI (US) recorded in
August27AQI (US)
202239AQI (US)
25
6
13
8
22
9
13
4
26
5
27
3
19
2
1
28
28
3
23
7
24
7
249
54
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
August25AQI (US)
202138AQI (US)
20
11
22
6
25
6
29
1
25
6
27
3
28
3
27
4
30
29
2
23
7
17
14
302
63
Highest AQI (US) recorded in
December47AQI (US)
Lowest AQI (US) recorded in
July32AQI (US)
202038AQI (US)
11
2
19
2
18
22
8
31
20
11
18
1
28
3
18
12
17
14
202
53
Highest AQI (US) recorded in
December47AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
41AQI (US)Least Polluted Year Recorded
2026(Avg.)
36AQI (US)Yachiyo's annual 2026 AQI (US) (36) shows an average percentage change of -7.6% (improved AQI (US)) compared to previous years: 2020 (38), 2021 (38), 2022 (39), 2023 (39), 2024 (39), 2025 (41).
