Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Masaki, Ehime, 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

Masaki, Ehime, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
19th Oct 2023
76AQI
Lowest AQI recorded on
19th Oct 2022
24AQI

Same Day Analysis (2nd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 28 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.

Day & Night AQI Trend: 1st Oct - 2nd Oct 2026

Masaki, Ehime, Japan

AQI
Day
Night
.

5 AM1st Oct 2026

6 PM

4 AM2nd Oct 2026

Day time
Avg. Highest Time
5PM1st Oct

28AQI

Avg. Lowest Time
9AM1st Oct

21AQI

Night time
Avg. Highest Time
3AM2nd Oct

31AQI

Avg. Lowest Time
5AM1st Oct

21AQI

In the last 24 hours,

Masaki's AQI reached its highest point of 31 at 3 AM during the Night, while the lowest point, 21, was recorded at 9 AM during the Day between 1st Oct and 2nd Oct 2026.

Day & Night AQI Trend : Sep - Oct 2026

Masaki, Ehime, Japan

SepOct
03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd
Day
Night
3rd Sep 2026295 AMAQI
3rd Sep 2026256 AMAQI
3rd Sep 2026217 AMAQI
3rd Sep 2026258 AMAQI
3rd Sep 2026259 AMAQI
3rd Sep 20262110 AMAQI
3rd Sep 20262711 AMAQI
3rd Sep 20262512 PMAQI
3rd Sep 2026251 PMAQI
3rd Sep 2026252 PMAQI
3rd Sep 2026263 PMAQI
3rd Sep 2026294 PMAQI
3rd Sep 2026255 PMAQI
3rd Sep 2026276 PMAQI
3rd Sep 2026297 PMAQI
3rd Sep 2026298 PMAQI
3rd Sep 2026299 PMAQI
3rd Sep 20262710 PMAQI
3rd Sep 20262911 PMAQI
4th Sep 20262912 AMAQI
4th Sep 2026271 AMAQI
4th Sep 2026252 AMAQI
4th Sep 2026253 AMAQI
4th Sep 2026214 AMAQI

23°C21/24°C

4th Sep 2026215 AMAQI
4th Sep 2026236 AMAQI
4th Sep 2026297 AMAQI
4th Sep 2026348 AMAQI
4th Sep 2026429 AMAQI
4th Sep 20262910 AMAQI
4th Sep 20262311 AMAQI
4th Sep 20262512 PMAQI
4th Sep 2026251 PMAQI
4th Sep 2026212 PMAQI
4th Sep 2026293 PMAQI
4th Sep 2026254 PMAQI
4th Sep 2026255 PMAQI
4th Sep 2026256 PMAQI
4th Sep 2026217 PMAQI
4th Sep 2026218 PMAQI
4th Sep 2026219 PMAQI
4th Sep 20262110 PMAQI
4th Sep 20262111 PMAQI
5th Sep 20262912 AMAQI
5th Sep 2026291 AMAQI
5th Sep 2026202 AMAQI
5th Sep 2026233 AMAQI
5th Sep 2026284 AMAQI

21°C18/22°C

5th Sep 2026255 AMAQI
5th Sep 2026236 AMAQI
5th Sep 2026267 AMAQI
5th Sep 2026288 AMAQI
5th Sep 2026259 AMAQI
5th Sep 20262510 AMAQI
5th Sep 20262111 AMAQI
5th Sep 20262112 PMAQI
5th Sep 2026231 PMAQI
5th Sep 2026212 PMAQI
5th Sep 2026273 PMAQI
5th Sep 2026214 PMAQI
5th Sep 2026235 PMAQI
5th Sep 2026256 PMAQI
5th Sep 2026257 PMAQI
5th Sep 2026258 PMAQI
5th Sep 2026259 PMAQI
5th Sep 20262510 PMAQI
5th Sep 20262311 PMAQI
6th Sep 20262312 AMAQI
6th Sep 2026241 AMAQI
6th Sep 2026222 AMAQI
6th Sep 2026213 AMAQI
6th Sep 2026214 AMAQI

22°C19/24°C

6th Sep 2026225 AMAQI
6th Sep 2026226 AMAQI
6th Sep 2026237 AMAQI
6th Sep 2026228 AMAQI
6th Sep 2026219 AMAQI
6th Sep 20262110 AMAQI
6th Sep 20262211 AMAQI
6th Sep 20262112 PMAQI
6th Sep 2026211 PMAQI
6th Sep 2026212 PMAQI
6th Sep 2026223 PMAQI
6th Sep 2026244 PMAQI
6th Sep 2026225 PMAQI
6th Sep 2026256 PMAQI
6th Sep 2026227 PMAQI
6th Sep 2026248 PMAQI
6th Sep 2026239 PMAQI
6th Sep 20262110 PMAQI
6th Sep 20262111 PMAQI
7th Sep 20262112 AMAQI
7th Sep 2026211 AMAQI
7th Sep 2026212 AMAQI
7th Sep 2026253 AMAQI
7th Sep 2026254 AMAQI

22°C21/23°C

7th Sep 2026255 AMAQI
7th Sep 2026256 AMAQI
7th Sep 2026217 AMAQI
7th Sep 2026218 AMAQI
7th Sep 2026219 AMAQI
7th Sep 20262110 AMAQI
7th Sep 20262111 AMAQI
7th Sep 20262112 PMAQI
7th Sep 2026231 PMAQI
7th Sep 2026252 PMAQI
7th Sep 2026213 PMAQI
7th Sep 2026254 PMAQI
7th Sep 2026275 PMAQI
7th Sep 2026256 PMAQI
7th Sep 2026217 PMAQI
7th Sep 2026238 PMAQI
7th Sep 2026259 PMAQI
7th Sep 20262510 PMAQI
7th Sep 20262311 PMAQI
8th Sep 20262112 AMAQI
8th Sep 2026211 AMAQI
8th Sep 2026232 AMAQI
8th Sep 2026243 AMAQI
8th Sep 2026264 AMAQI

23°C21/27°C

8th Sep 2026235 AMAQI
8th Sep 2026226 AMAQI
8th Sep 2026217 AMAQI
8th Sep 2026218 AMAQI
8th Sep 2026219 AMAQI
8th Sep 20262110 AMAQI
8th Sep 20262111 AMAQI
8th Sep 20262112 PMAQI
8th Sep 2026241 PMAQI
8th Sep 2026222 PMAQI
8th Sep 2026233 PMAQI
8th Sep 2026244 PMAQI
8th Sep 2026245 PMAQI
8th Sep 2026216 PMAQI
8th Sep 2026227 PMAQI
8th Sep 2026238 PMAQI
8th Sep 2026229 PMAQI
8th Sep 20262110 PMAQI
8th Sep 20262211 PMAQI
9th Sep 20262112 AMAQI
9th Sep 2026211 AMAQI
9th Sep 2026252 AMAQI
9th Sep 2026253 AMAQI
9th Sep 2026254 AMAQI

24°C22/28°C

9th Sep 2026185 AMAQI
9th Sep 2026216 AMAQI
9th Sep 2026147 AMAQI
9th Sep 2026248 AMAQI
9th Sep 2026249 AMAQI
9th Sep 20261610 AMAQI
9th Sep 20262511 AMAQI
9th Sep 20262712 PMAQI
9th Sep 2026291 PMAQI
9th Sep 2026212 PMAQI
9th Sep 2026213 PMAQI
9th Sep 2026294 PMAQI
9th Sep 2026255 PMAQI
9th Sep 2026256 PMAQI
9th Sep 2026257 PMAQI
9th Sep 2026238 PMAQI
9th Sep 2026269 PMAQI
9th Sep 20262510 PMAQI
9th Sep 20262111 PMAQI
10th Sep 20262112 AMAQI
10th Sep 2026231 AMAQI
10th Sep 2026252 AMAQI
10th Sep 2026253 AMAQI
10th Sep 2026254 AMAQI

23°C20/24°C

10th Sep 2026245 AMAQI
10th Sep 2026236 AMAQI
10th Sep 2026217 AMAQI
10th Sep 2026238 AMAQI
10th Sep 2026259 AMAQI
10th Sep 20262510 AMAQI
10th Sep 20262411 AMAQI
10th Sep 20262312 PMAQI
10th Sep 2026211 PMAQI
10th Sep 2026212 PMAQI
10th Sep 2026233 PMAQI
10th Sep 2026244 PMAQI
10th Sep 2026235 PMAQI
10th Sep 2026226 PMAQI
10th Sep 2026257 PMAQI
10th Sep 2026248 PMAQI
10th Sep 2026239 PMAQI
10th Sep 20262310 PMAQI
10th Sep 20262511 PMAQI
11th Sep 20262612 AMAQI
11th Sep 2026251 AMAQI
11th Sep 2026242 AMAQI
11th Sep 2026263 AMAQI
11th Sep 2026244 AMAQI

20°C19/23°C

11th Sep 2026255 AMAQI
11th Sep 2026246 AMAQI
11th Sep 2026247 AMAQI
11th Sep 2026238 AMAQI
11th Sep 2026239 AMAQI
11th Sep 20262110 AMAQI
11th Sep 20262111 AMAQI
11th Sep 20262112 PMAQI
11th Sep 2026211 PMAQI
11th Sep 2026212 PMAQI
11th Sep 2026213 PMAQI
11th Sep 2026254 PMAQI
11th Sep 2026245 PMAQI
11th Sep 2026286 PMAQI
11th Sep 2026277 PMAQI
11th Sep 2026288 PMAQI
11th Sep 2026259 PMAQI
11th Sep 20262710 PMAQI
11th Sep 20262811 PMAQI
12th Sep 20262812 AMAQI
12th Sep 2026281 AMAQI
12th Sep 2026272 AMAQI
12th Sep 2026293 AMAQI
12th Sep 2026304 AMAQI

23°C21/26°C

12th Sep 2026295 AMAQI
12th Sep 2026296 AMAQI
12th Sep 2026297 AMAQI
12th Sep 2026308 AMAQI
12th Sep 2026299 AMAQI
12th Sep 20263310 AMAQI
12th Sep 20263311 AMAQI
12th Sep 20263012 PMAQI
12th Sep 2026291 PMAQI
12th Sep 2026302 PMAQI
12th Sep 2026273 PMAQI
12th Sep 2026284 PMAQI
12th Sep 2026295 PMAQI
12th Sep 2026276 PMAQI
12th Sep 2026277 PMAQI
12th Sep 2026298 PMAQI
12th Sep 2026309 PMAQI
12th Sep 20262910 PMAQI
12th Sep 20262811 PMAQI
13th Sep 20262912 AMAQI
13th Sep 2026291 AMAQI
13th Sep 2026292 AMAQI
13th Sep 2026293 AMAQI
13th Sep 2026294 AMAQI

24°C22/27°C

13th Sep 2026346 AMAQI
13th Sep 2026347 AMAQI
13th Sep 2026318 AMAQI
13th Sep 2026319 AMAQI
13th Sep 20263210 AMAQI
13th Sep 20263411 AMAQI
13th Sep 20263212 PMAQI
13th Sep 2026381 PMAQI
13th Sep 2026432 PMAQI
13th Sep 2026423 PMAQI
13th Sep 2026394 PMAQI
13th Sep 2026405 PMAQI
13th Sep 2026406 PMAQI
13th Sep 2026387 PMAQI
13th Sep 2026398 PMAQI
13th Sep 2026379 PMAQI
13th Sep 20263810 PMAQI
13th Sep 20263411 PMAQI
14th Sep 20263812 AMAQI
14th Sep 2026321 AMAQI
14th Sep 2026342 AMAQI
14th Sep 2026323 AMAQI
14th Sep 2026284 AMAQI

24°C22/27°C

14th Sep 2026265 AMAQI
14th Sep 2026246 AMAQI
14th Sep 2026257 AMAQI
14th Sep 2026228 AMAQI
14th Sep 2026219 AMAQI
14th Sep 20262310 AMAQI
14th Sep 20263311 AMAQI
14th Sep 20262512 PMAQI
14th Sep 2026231 PMAQI
14th Sep 2026232 PMAQI
14th Sep 2026403 PMAQI
14th Sep 2026344 PMAQI
14th Sep 2026235 PMAQI
14th Sep 2026256 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026298 PMAQI
14th Sep 2026279 PMAQI
14th Sep 20262610 PMAQI
14th Sep 20262111 PMAQI
15th Sep 20262412 AMAQI
15th Sep 2026211 AMAQI
15th Sep 2026212 AMAQI
15th Sep 2026223 AMAQI
15th Sep 2026224 AMAQI

24°C22/28°C

15th Sep 2026245 AMAQI
15th Sep 2026216 AMAQI
15th Sep 2026217 AMAQI
15th Sep 2026218 AMAQI
15th Sep 2026219 AMAQI
15th Sep 20262210 AMAQI
15th Sep 20262511 AMAQI
15th Sep 20262512 PMAQI
15th Sep 2026251 PMAQI
15th Sep 2026272 PMAQI
15th Sep 2026253 PMAQI
15th Sep 2026314 PMAQI
15th Sep 2026235 PMAQI
15th Sep 2026306 PMAQI
15th Sep 2026217 PMAQI
15th Sep 2026238 PMAQI
15th Sep 2026249 PMAQI
15th Sep 20262510 PMAQI
15th Sep 20262111 PMAQI
16th Sep 20262512 AMAQI
16th Sep 2026381 AMAQI
16th Sep 2026292 AMAQI
16th Sep 2026253 AMAQI
16th Sep 2026404 AMAQI

23°C21/25°C

16th Sep 2026255 AMAQI
16th Sep 2026216 AMAQI
16th Sep 2026257 AMAQI
16th Sep 2026258 AMAQI
16th Sep 2026279 AMAQI
16th Sep 20262310 AMAQI
16th Sep 20262611 AMAQI
16th Sep 20262512 PMAQI
16th Sep 2026241 PMAQI
16th Sep 2026232 PMAQI
16th Sep 2026253 PMAQI
16th Sep 2026234 PMAQI
16th Sep 2026235 PMAQI
16th Sep 2026216 PMAQI
16th Sep 2026227 PMAQI
16th Sep 2026218 PMAQI
16th Sep 2026219 PMAQI
16th Sep 20262510 PMAQI
16th Sep 20262311 PMAQI
17th Sep 20262312 AMAQI
17th Sep 2026211 AMAQI
17th Sep 2026232 AMAQI
17th Sep 2026243 AMAQI
17th Sep 2026244 AMAQI

21°C20/22°C

17th Sep 2026215 AMAQI
17th Sep 2026216 AMAQI
17th Sep 2026217 AMAQI
17th Sep 2026238 AMAQI
17th Sep 2026239 AMAQI
17th Sep 20262510 AMAQI
17th Sep 20262511 AMAQI
17th Sep 20262312 PMAQI
17th Sep 2026211 PMAQI
17th Sep 2026212 PMAQI
17th Sep 2026223 PMAQI
17th Sep 2026224 PMAQI
17th Sep 2026255 PMAQI
17th Sep 2026256 PMAQI
17th Sep 2026277 PMAQI
17th Sep 2026258 PMAQI
17th Sep 2026249 PMAQI
17th Sep 20262510 PMAQI
17th Sep 20262511 PMAQI
18th Sep 20262612 AMAQI
18th Sep 2026241 AMAQI
18th Sep 2026232 AMAQI
18th Sep 2026263 AMAQI
18th Sep 2026244 AMAQI

23°C20/26°C

18th Sep 2026265 AMAQI
18th Sep 2026256 AMAQI
18th Sep 2026247 AMAQI
18th Sep 2026258 AMAQI
18th Sep 2026249 AMAQI
18th Sep 20262510 AMAQI
18th Sep 20262611 AMAQI
18th Sep 20262512 PMAQI
18th Sep 2026251 PMAQI
18th Sep 2026282 PMAQI
18th Sep 2026293 PMAQI
18th Sep 2026274 PMAQI
18th Sep 2026305 PMAQI
18th Sep 2026286 PMAQI
18th Sep 2026287 PMAQI
18th Sep 2026268 PMAQI
18th Sep 2026299 PMAQI
18th Sep 20262710 PMAQI
18th Sep 20262811 PMAQI
19th Sep 20262612 AMAQI
19th Sep 2026261 AMAQI
19th Sep 2026242 AMAQI
19th Sep 2026243 AMAQI
19th Sep 2026224 AMAQI

22°C20/25°C

19th Sep 2026225 AMAQI
19th Sep 2026216 AMAQI
19th Sep 2026227 AMAQI
19th Sep 2026218 AMAQI
19th Sep 2026219 AMAQI
19th Sep 20262210 AMAQI
19th Sep 20262111 AMAQI
19th Sep 20262312 PMAQI
19th Sep 2026251 PMAQI
19th Sep 2026272 PMAQI
19th Sep 2026283 PMAQI
19th Sep 2026304 PMAQI
19th Sep 2026305 PMAQI
19th Sep 2026306 PMAQI
19th Sep 2026327 PMAQI
19th Sep 2026318 PMAQI
19th Sep 2026339 PMAQI
19th Sep 20263410 PMAQI
19th Sep 20263411 PMAQI
20th Sep 20263212 AMAQI
20th Sep 2026341 AMAQI
20th Sep 2026342 AMAQI
20th Sep 2026323 AMAQI
20th Sep 2026334 AMAQI

23°C21/25°C

20th Sep 2026325 AMAQI
20th Sep 2026316 AMAQI
20th Sep 2026307 AMAQI
20th Sep 2026288 AMAQI
20th Sep 2026279 AMAQI
20th Sep 20262610 AMAQI
20th Sep 20262511 AMAQI
20th Sep 20262312 PMAQI
20th Sep 2026241 PMAQI
20th Sep 2026252 PMAQI
20th Sep 2026253 PMAQI
20th Sep 2026214 PMAQI
20th Sep 2026215 PMAQI
20th Sep 2026226 PMAQI
20th Sep 2026247 PMAQI
20th Sep 2026228 PMAQI
20th Sep 2026279 PMAQI
20th Sep 20262110 PMAQI
20th Sep 20262511 PMAQI
21st Sep 20262512 AMAQI
21st Sep 2026251 AMAQI
21st Sep 2026272 AMAQI
21st Sep 2026273 AMAQI
21st Sep 2026254 AMAQI

24°C21/27°C

21st Sep 2026255 AMAQI
21st Sep 2026256 AMAQI
21st Sep 2026257 AMAQI
21st Sep 2026258 AMAQI
21st Sep 2026279 AMAQI
21st Sep 20262510 AMAQI
21st Sep 20262511 AMAQI
21st Sep 20262912 PMAQI
21st Sep 2026251 PMAQI
21st Sep 2026232 PMAQI
21st Sep 2026253 PMAQI
21st Sep 2026214 PMAQI
21st Sep 2026215 PMAQI
21st Sep 2026256 PMAQI
21st Sep 2026257 PMAQI
21st Sep 2026258 PMAQI
21st Sep 2026239 PMAQI
21st Sep 20262510 PMAQI
21st Sep 20262511 PMAQI
22nd Sep 20262512 AMAQI
22nd Sep 2026251 AMAQI
22nd Sep 2026422 AMAQI
22nd Sep 2026573 AMAQI
22nd Sep 2026574 AMAQI

22°C19/24°C

22nd Sep 2026505 AMAQI
22nd Sep 2026426 AMAQI
22nd Sep 2026257 AMAQI
22nd Sep 2026238 AMAQI
22nd Sep 2026219 AMAQI
22nd Sep 20262110 AMAQI
22nd Sep 20262311 AMAQI
22nd Sep 20262312 PMAQI
22nd Sep 2026241 PMAQI
22nd Sep 2026252 PMAQI
22nd Sep 2026263 PMAQI
22nd Sep 2026254 PMAQI
22nd Sep 2026485 PMAQI
22nd Sep 2026386 PMAQI
22nd Sep 2026317 PMAQI
22nd Sep 2026318 PMAQI
22nd Sep 2026299 PMAQI
22nd Sep 20262910 PMAQI
22nd Sep 20262811 PMAQI
23rd Sep 20262612 AMAQI
23rd Sep 2026231 AMAQI
23rd Sep 2026232 AMAQI
23rd Sep 2026213 AMAQI
23rd Sep 2026214 AMAQI

21°C17/26°C

23rd Sep 2026255 AMAQI
23rd Sep 2026216 AMAQI
23rd Sep 2026237 AMAQI
23rd Sep 2026218 AMAQI
23rd Sep 2026239 AMAQI
23rd Sep 20262310 AMAQI
23rd Sep 20262811 AMAQI
23rd Sep 20263012 PMAQI
23rd Sep 2026261 PMAQI
23rd Sep 2026282 PMAQI
23rd Sep 2026303 PMAQI
23rd Sep 2026294 PMAQI
23rd Sep 2026285 PMAQI
23rd Sep 2026326 PMAQI
23rd Sep 2026297 PMAQI
23rd Sep 2026328 PMAQI
23rd Sep 2026329 PMAQI
23rd Sep 20263110 PMAQI
23rd Sep 20263211 PMAQI
24th Sep 20263312 AMAQI
24th Sep 2026361 AMAQI
24th Sep 2026362 AMAQI
24th Sep 2026413 AMAQI
24th Sep 2026414 AMAQI

21°C18/25°C

24th Sep 2026435 AMAQI
24th Sep 2026466 AMAQI
24th Sep 2026477 AMAQI
24th Sep 2026428 AMAQI
24th Sep 2026469 AMAQI
24th Sep 20264210 AMAQI
24th Sep 20264211 AMAQI
24th Sep 20263812 PMAQI
24th Sep 2026381 PMAQI
24th Sep 2026382 PMAQI
24th Sep 2026403 PMAQI
24th Sep 2026414 PMAQI
24th Sep 2026365 PMAQI
24th Sep 2026366 PMAQI
24th Sep 2026387 PMAQI
24th Sep 2026348 PMAQI
24th Sep 2026329 PMAQI
24th Sep 20263210 PMAQI
24th Sep 20263611 PMAQI
25th Sep 20263412 AMAQI
25th Sep 2026321 AMAQI
25th Sep 2026332 AMAQI
25th Sep 2026363 AMAQI
25th Sep 2026344 AMAQI

22°C19/25°C

25th Sep 2026335 AMAQI
25th Sep 2026346 AMAQI
25th Sep 2026367 AMAQI
25th Sep 2026348 AMAQI
25th Sep 2026309 AMAQI
25th Sep 20263210 AMAQI
25th Sep 20263811 AMAQI
25th Sep 20264412 PMAQI
25th Sep 2026441 PMAQI
25th Sep 2026482 PMAQI
25th Sep 2026483 PMAQI
25th Sep 2026474 PMAQI
25th Sep 2026475 PMAQI
25th Sep 2026486 PMAQI
25th Sep 2026487 PMAQI
25th Sep 2026488 PMAQI
25th Sep 2026489 PMAQI
25th Sep 20265110 PMAQI
25th Sep 20265211 PMAQI
26th Sep 20265212 AMAQI
26th Sep 2026581 AMAQI
26th Sep 2026562 AMAQI
26th Sep 2026603 AMAQI
26th Sep 2026614 AMAQI

22°C19/26°C

26th Sep 2026645 AMAQI
26th Sep 2026586 AMAQI
26th Sep 2026607 AMAQI
26th Sep 2026608 AMAQI
26th Sep 2026599 AMAQI
26th Sep 20265810 AMAQI
26th Sep 20266211 AMAQI
26th Sep 20266212 PMAQI
26th Sep 2026621 PMAQI
26th Sep 2026522 PMAQI
26th Sep 2026513 PMAQI
26th Sep 2026544 PMAQI
26th Sep 2026545 PMAQI
26th Sep 2026546 PMAQI
26th Sep 2026307 PMAQI
26th Sep 2026218 PMAQI
26th Sep 2026299 PMAQI
26th Sep 20262510 PMAQI
26th Sep 20262511 PMAQI
27th Sep 20262912 AMAQI
27th Sep 2026181 AMAQI
27th Sep 2026212 AMAQI
27th Sep 2026103 AMAQI
27th Sep 202684 AMAQI

21°C20/23°C

27th Sep 202685 AMAQI
27th Sep 202676 AMAQI
27th Sep 2026107 AMAQI
27th Sep 2026128 AMAQI
27th Sep 2026199 AMAQI
27th Sep 20261610 AMAQI
27th Sep 20261411 AMAQI
27th Sep 20261412 PMAQI
27th Sep 2026141 PMAQI
27th Sep 2026152 PMAQI
27th Sep 2026163 PMAQI
27th Sep 2026194 PMAQI
27th Sep 2026225 PMAQI
27th Sep 2026236 PMAQI
27th Sep 2026227 PMAQI
27th Sep 2026198 PMAQI
27th Sep 202699 PMAQI
27th Sep 20261010 PMAQI
27th Sep 2026811 PMAQI
28th Sep 20261412 AMAQI
28th Sep 2026101 AMAQI
28th Sep 2026122 AMAQI
28th Sep 202673 AMAQI
28th Sep 2026104 AMAQI

20°C18/22°C

28th Sep 2026105 AMAQI
28th Sep 2026116 AMAQI
28th Sep 2026147 AMAQI
28th Sep 2026178 AMAQI
28th Sep 2026209 AMAQI
28th Sep 20262310 AMAQI
28th Sep 20262311 AMAQI
28th Sep 20262912 PMAQI
28th Sep 2026251 PMAQI
28th Sep 2026272 PMAQI
28th Sep 2026263 PMAQI
28th Sep 2026264 PMAQI
28th Sep 2026215 PMAQI
28th Sep 2026216 PMAQI
28th Sep 2026217 PMAQI
28th Sep 2026218 PMAQI
28th Sep 2026219 PMAQI
28th Sep 20262510 PMAQI
28th Sep 20262511 PMAQI
29th Sep 20262112 AMAQI
29th Sep 2026231 AMAQI
29th Sep 2026252 AMAQI
29th Sep 2026253 AMAQI
29th Sep 2026254 AMAQI

21°C20/23°C

29th Sep 2026255 AMAQI
29th Sep 2026256 AMAQI
29th Sep 2026257 AMAQI
29th Sep 2026258 AMAQI
29th Sep 2026259 AMAQI
29th Sep 20262510 AMAQI
29th Sep 20262111 AMAQI
29th Sep 20262512 PMAQI
29th Sep 2026251 PMAQI
29th Sep 2026252 PMAQI
29th Sep 2026253 PMAQI
29th Sep 2026254 PMAQI
29th Sep 2026255 PMAQI
29th Sep 2026276 PMAQI
29th Sep 2026257 PMAQI
29th Sep 2026238 PMAQI
29th Sep 2026259 PMAQI
29th Sep 20262510 PMAQI
29th Sep 20262511 PMAQI
30th Sep 20263012 AMAQI
30th Sep 2026301 AMAQI
30th Sep 2026342 AMAQI
30th Sep 2026253 AMAQI
30th Sep 2026254 AMAQI

19°C18/20°C

30th Sep 2026295 AMAQI
30th Sep 2026286 AMAQI
30th Sep 2026297 AMAQI
30th Sep 2026278 AMAQI
30th Sep 2026259 AMAQI
30th Sep 20262510 AMAQI
30th Sep 20262711 AMAQI
30th Sep 20262912 PMAQI
30th Sep 2026321 PMAQI
30th Sep 2026342 PMAQI
30th Sep 2026273 PMAQI
30th Sep 2026254 PMAQI
30th Sep 2026275 PMAQI
30th Sep 2026256 PMAQI
30th Sep 2026257 PMAQI
30th Sep 2026248 PMAQI
30th Sep 2026249 PMAQI
30th Sep 20262310 PMAQI
30th Sep 20262211 PMAQI
1st Oct 20262212 AMAQI
1st Oct 2026211 AMAQI
1st Oct 2026222 AMAQI
1st Oct 2026213 AMAQI
1st Oct 2026224 AMAQI

21°C18/25°C

1st Oct 2026215 AMAQI
1st Oct 2026216 AMAQI
1st Oct 2026217 AMAQI
1st Oct 2026218 AMAQI
1st Oct 2026219 AMAQI
1st Oct 20262210 AMAQI
1st Oct 20262211 AMAQI
1st Oct 20262312 PMAQI
1st Oct 2026241 PMAQI
1st Oct 2026242 PMAQI
1st Oct 2026243 PMAQI
1st Oct 2026274 PMAQI
1st Oct 2026285 PMAQI
1st Oct 2026286 PMAQI
1st Oct 2026267 PMAQI
1st Oct 2026288 PMAQI
1st Oct 2026289 PMAQI
1st Oct 20262810 PMAQI
1st Oct 20263011 PMAQI
2nd Oct 20263012 AMAQI
2nd Oct 2026291 AMAQI
2nd Oct 2026302 AMAQI
2nd Oct 2026313 AMAQI
2nd Oct 2026314 AMAQI

20°C18/24°C

2nd Oct 2026305 AMAQI
5 AM
2nd Oct 2026326 AMAQI
2nd Oct 2026317 AMAQI
2nd Oct 2026318 AMAQI
2nd Oct 2026319 AMAQI
2nd Oct 20263210 AMAQI
2nd Oct 20263211 AMAQI
11 AM
2nd Oct 20263012 PMAQI
2nd Oct 2026281 PMAQI
2nd Oct 2026292 PMAQI
2nd Oct 2026273 PMAQI
2nd Oct 2026244 PMAQI
2nd Oct 2026245 PMAQI
2nd Oct 2026236 PMAQI
6 PM
2nd Oct 2026257 PMAQI
2nd Oct 2026258 PMAQI
2nd Oct 2026239 PMAQI
2nd Oct 20262410 PMAQI
2nd Oct 20262311 PMAQI
11 PM
4 AM

19°C15/22°C

Day time
Avg. Highest Time
3 PM - 6 PM

28AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
6 AM - 8 AM

26AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 6 PM (Avg. 28), while the lowest AQI was between 6 AM to 8 AM (Avg. 26).
Night time
Avg. Highest Time
4 AM

28AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
9 PM - 11 PM

26AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 28), while the lowest AQI was between 9 PM to 11 PM (Avg. 26).

2026 Days Vs Air Quality

Masaki, Ehime, Japan

2026

89%

244

11%

31

Total number of days with different AQI categories in last 275 days in 2026 (90 days remaining)

Good
244 Days
Moderate
31 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 89%

Health Risk Level:

Low

In 2026, 89% of 275 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

Masaki, Ehime, 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
27AQI (US)
2nd January 2026
27AQI (US)
3rd January 2026
30AQI (US)
4th January 2026
40AQI (US)
5th January 2026
50AQI (US)
6th January 2026
30AQI (US)
7th January 2026
34AQI (US)
8th January 2026
38AQI (US)
9th January 2026
22AQI (US)
10th January 2026
34AQI (US)
11th January 2026
31AQI (US)
12th January 2026
22AQI (US)
13th January 2026
34AQI (US)
14th January 2026
23AQI (US)
15th January 2026
42AQI (US)
16th January 2026
58AQI (US)
17th January 2026
50AQI (US)
18th January 2026
46AQI (US)
19th January 2026
51AQI (US)
20th January 2026
26AQI (US)
21st January 2026
20AQI (US)
22nd January 2026
26AQI (US)
23rd January 2026
34AQI (US)
24th January 2026
43AQI (US)
25th January 2026
41AQI (US)
26th January 2026
18AQI (US)
27th January 2026
40AQI (US)
28th January 2026
26AQI (US)
29th January 2026
30AQI (US)
30th January 2026
21AQI (US)
31st January 2026
17AQI (US)
1st February 2026
41AQI (US)
2nd February 2026
46AQI (US)
3rd February 2026
32AQI (US)
4th February 2026
33AQI (US)
5th February 2026
38AQI (US)
6th February 2026
44AQI (US)
7th February 2026
27AQI (US)
8th February 2026
20AQI (US)
9th February 2026
37AQI (US)
10th February 2026
44AQI (US)
11th February 2026
36AQI (US)
12th February 2026
33AQI (US)
13th February 2026
30AQI (US)
14th February 2026
45AQI (US)
15th February 2026
44AQI (US)
16th February 2026
36AQI (US)
17th February 2026
22AQI (US)
18th February 2026
22AQI (US)
19th February 2026
42AQI (US)
20th February 2026
32AQI (US)
21st February 2026
65AQI (US)
22nd February 2026
31AQI (US)
23rd February 2026
47AQI (US)
24th February 2026
32AQI (US)
25th February 2026
18AQI (US)
26th February 2026
23AQI (US)
27th February 2026
50AQI (US)
28th February 2026
27AQI (US)
1st March 2026
34AQI (US)
2nd March 2026
58AQI (US)
3rd March 2026
39AQI (US)
4th March 2026
25AQI (US)
5th March 2026
46AQI (US)
6th March 2026
48AQI (US)
7th March 2026
47AQI (US)
8th March 2026
27AQI (US)
9th March 2026
35AQI (US)
10th March 2026
39AQI (US)
11th March 2026
51AQI (US)
12th March 2026
56AQI (US)
13th March 2026
37AQI (US)
14th March 2026
43AQI (US)
15th March 2026
58AQI (US)
16th March 2026
50AQI (US)
17th March 2026
42AQI (US)
18th March 2026
54AQI (US)
19th March 2026
31AQI (US)
20th March 2026
39AQI (US)
21st March 2026
38AQI (US)
22nd March 2026
44AQI (US)
23rd March 2026
32AQI (US)
24th March 2026
36AQI (US)
25th March 2026
34AQI (US)
26th March 2026
16AQI (US)
27th March 2026
32AQI (US)
28th March 2026
62AQI (US)
29th March 2026
65AQI (US)
30th March 2026
54AQI (US)
31st March 2026
23AQI (US)
1st April 2026
14AQI (US)
2nd April 2026
48AQI (US)
3rd April 2026
50AQI (US)
4th April 2026
40AQI (US)
5th April 2026
32AQI (US)
6th April 2026
48AQI (US)
7th April 2026
30AQI (US)
8th April 2026
28AQI (US)
9th April 2026
39AQI (US)
10th April 2026
32AQI (US)
11th April 2026
32AQI (US)
12th April 2026
31AQI (US)
13th April 2026
34AQI (US)
14th April 2026
52AQI (US)
15th April 2026
56AQI (US)
16th April 2026
20AQI (US)
17th April 2026
30AQI (US)
18th April 2026
36AQI (US)
19th April 2026
37AQI (US)
20th April 2026
39AQI (US)
21st April 2026
38AQI (US)
22nd April 2026
44AQI (US)
23rd April 2026
30AQI (US)
24th April 2026
21AQI (US)
25th April 2026
44AQI (US)
26th April 2026
48AQI (US)
27th April 2026
52AQI (US)
28th April 2026
49AQI (US)
29th April 2026
41AQI (US)
30th April 2026
32AQI (US)
1st May 2026
48AQI (US)
2nd May 2026
49AQI (US)
3rd May 2026
40AQI (US)
4th May 2026
30AQI (US)
5th May 2026
28AQI (US)
6th May 2026
26AQI (US)
7th May 2026
29AQI (US)
8th May 2026
27AQI (US)
9th May 2026
27AQI (US)
10th May 2026
30AQI (US)
11th May 2026
30AQI (US)
12th May 2026
27AQI (US)
13th May 2026
35AQI (US)
14th May 2026
30AQI (US)
15th May 2026
32AQI (US)
16th May 2026
78AQI (US)
17th May 2026
64AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
60AQI (US)
21st May 2026
65AQI (US)
22nd May 2026
69AQI (US)
23rd May 2026
60AQI (US)
24th May 2026
64AQI (US)
25th May 2026
54AQI (US)
26th May 2026
41AQI (US)
27th May 2026
25AQI (US)
28th May 2026
27AQI (US)
29th May 2026
26AQI (US)
30th May 2026
25AQI (US)
31st May 2026
26AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
26AQI (US)
3rd June 2026
28AQI (US)
4th June 2026
25AQI (US)
5th June 2026
23AQI (US)
6th June 2026
26AQI (US)
7th June 2026
22AQI (US)
8th June 2026
19AQI (US)
9th June 2026
24AQI (US)
10th June 2026
23AQI (US)
11th June 2026
26AQI (US)
12th June 2026
25AQI (US)
13th June 2026
26AQI (US)
14th June 2026
24AQI (US)
15th June 2026
24AQI (US)
16th June 2026
26AQI (US)
17th June 2026
25AQI (US)
18th June 2026
26AQI (US)
19th June 2026
34AQI (US)
20th June 2026
40AQI (US)
21st June 2026
22AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
22AQI (US)
25th June 2026
26AQI (US)
26th June 2026
26AQI (US)
27th June 2026
26AQI (US)
28th June 2026
28AQI (US)
29th June 2026
24AQI (US)
30th June 2026
30AQI (US)
1st July 2026
34AQI (US)
2nd July 2026
18AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
24AQI (US)
5th July 2026
19AQI (US)
6th July 2026
21AQI (US)
7th July 2026
25AQI (US)
8th July 2026
25AQI (US)
9th July 2026
25AQI (US)
10th July 2026
26AQI (US)
11th July 2026
28AQI (US)
12th July 2026
28AQI (US)
13th July 2026
27AQI (US)
14th July 2026
28AQI (US)
15th July 2026
26AQI (US)
16th July 2026
27AQI (US)
17th July 2026
33AQI (US)
18th July 2026
54AQI (US)
19th July 2026
56AQI (US)
20th July 2026
54AQI (US)
21st July 2026
55AQI (US)
22nd July 2026
58AQI (US)
23rd July 2026
48AQI (US)
24th July 2026
51AQI (US)
25th July 2026
46AQI (US)
26th July 2026
36AQI (US)
27th July 2026
39AQI (US)
28th July 2026
35AQI (US)
29th July 2026
23AQI (US)
30th July 2026
22AQI (US)
31st July 2026
24AQI (US)
1st August 2026
31AQI (US)
2nd August 2026
38AQI (US)
3rd August 2026
48AQI (US)
4th August 2026
53AQI (US)
5th August 2026
34AQI (US)
6th August 2026
28AQI (US)
7th August 2026
24AQI (US)
8th August 2026
24AQI (US)
9th August 2026
25AQI (US)
10th August 2026
32AQI (US)
11th August 2026
30AQI (US)
12th August 2026
22AQI (US)
13th August 2026
25AQI (US)
14th August 2026
38AQI (US)
15th August 2026
31AQI (US)
16th August 2026
24AQI (US)
17th August 2026
25AQI (US)
18th August 2026
25AQI (US)
19th August 2026
24AQI (US)
20th August 2026
25AQI (US)
21st August 2026
26AQI (US)
22nd August 2026
24AQI (US)
23rd August 2026
22AQI (US)
24th August 2026
22AQI (US)
25th August 2026
24AQI (US)
26th August 2026
25AQI (US)
27th August 2026
24AQI (US)
28th August 2026
24AQI (US)
29th August 2026
25AQI (US)
30th August 2026
26AQI (US)
31st August 2026
44AQI (US)
1st September 2026
26AQI (US)
2nd September 2026
26AQI (US)
3rd September 2026
26AQI (US)
4th September 2026
25AQI (US)
5th September 2026
24AQI (US)
6th September 2026
22AQI (US)
7th September 2026
23AQI (US)
8th September 2026
22AQI (US)
9th September 2026
24AQI (US)
10th September 2026
24AQI (US)
11th September 2026
24AQI (US)
12th September 2026
29AQI (US)
13th September 2026
34AQI (US)
14th September 2026
28AQI (US)
15th September 2026
24AQI (US)
16th September 2026
26AQI (US)
17th September 2026
23AQI (US)
18th September 2026
26AQI (US)
19th September 2026
26AQI (US)
20th September 2026
27AQI (US)
21st September 2026
25AQI (US)
22nd September 2026
32AQI (US)
23rd September 2026
26AQI (US)
24th September 2026
38AQI (US)
25th September 2026
40AQI (US)
26th September 2026
52AQI (US)
27th September 2026
15AQI (US)
28th September 2026
20AQI (US)
29th September 2026
24AQI (US)
30th September 2026
27AQI (US)
1st October 2026
24AQI (US)
2nd October 2026
28AQI (US)
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

33AQI (US)

36AQI (US)

42AQI (US)

38AQI (US)

41AQI (US)

26AQI (US)

34AQI (US)

29AQI (US)

27AQI (US)

26AQI (US)

No. of days

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

202634AQI (US)

29
2
27
1
23
8
27
3
22
9
30
25
6
30
1
29
1
2
244
31

Highest AQI (US) recorded in

March

42AQI (US)

Lowest AQI (US) recorded in

October

26AQI (US)

202546AQI (US)

26
5
24
4
18
13
21
9
22
9
16
14
15
16
30
1
30
8
23
7
23
20
11
237
128

Highest AQI (US) recorded in

October

55AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202442AQI (US)

26
4
23
6
22
9
9
20
1
20
11
24
6
29
2
19
12
23
7
29
2
24
6
31
279
85
1

Highest AQI (US) recorded in

April

58AQI (US)

Lowest AQI (US) recorded in

December

32AQI (US)

202348AQI (US)

24
5
1
24
4
13
18
10
20
18
13
6
23
1
15
16
23
8
19
11
19
12
20
9
20
11
211
150
2

Highest AQI (US) recorded in

June

59AQI (US)

Lowest AQI (US) recorded in

December

42AQI (US)

202246AQI (US)

27
4
16
6
19
12
15
15
8
23
18
12
13
9
2
24
5
24
7
23
7
30
1
217
103

Highest AQI (US) recorded in

August

63AQI (US)

Lowest AQI (US) recorded in

December

38AQI (US)

202141AQI (US)

25
6
20
8
21
8
19
2
18
13
11
19
28
3
26
5
24
6
25
6
25
5
29
2
271
83

Highest AQI (US) recorded in

June

53AQI (US)

Lowest AQI (US) recorded in

December

35AQI (US)

202041AQI (US)

9
4
17
4
15
3
18
12
26
5
15
15
1
16
3
29
2
27
3
28
3
200
54
1

Highest AQI (US) recorded in

August

58AQI (US)

Lowest AQI (US) recorded in

December

32AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2023(Avg.)
48AQI (US)
Least Polluted Year Recorded
2026(Avg.)
34AQI (US)

Masaki's annual 2026 AQI (US) (34) shows an average percentage change of -22.4% (improved AQI (US)) compared to previous years: 2020 (41), 2021 (41), 2022 (46), 2023 (48), 2024 (42), 2025 (46).