Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Matsuhama, Niigata, Niigata, 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+

February Air Quality Analysis

Matsuhama, Niigata, Niigata, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
8th Feb 2023
62AQI
Lowest AQI recorded on
6th Feb 2024
24AQI

Same Day Analysis (6th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 39 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 5th Feb - 6th Feb 2026

Matsuhama, Niigata, Niigata, Japan

AQI
Day
Night
.

6 AM5th Feb 2026

4 PM

5 AM6th Feb 2026

Day time
Avg. Highest Time
11AM5th Feb

63AQI

Avg. Lowest Time
12PM5th Feb

32AQI

Night time
Avg. Highest Time
5AM6th Feb

60AQI

Avg. Lowest Time
6PM5th Feb

16AQI

In the last 24 hours,

Matsuhama's AQI reached its highest point of 63 at 11 AM during the Day, while the lowest point, 16, was recorded at 6 PM during the Night between 5th Feb and 6th Feb 2026.

Day & Night AQI Trend : Jan - Feb 2026

Matsuhama, Niigata, Niigata, Japan

JanFeb
08th - 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 - 04th04th - 05th05th - 06th06th
Day
Night
8th Jan 2026256 AMAQI
8th Jan 2026277 AMAQI
8th Jan 2026218 AMAQI
8th Jan 2026199 AMAQI
8th Jan 20261610 AMAQI
8th Jan 20261211 AMAQI
8th Jan 20261212 PMAQI
8th Jan 2026171 PMAQI
8th Jan 2026172 PMAQI
8th Jan 2026254 PMAQI
8th Jan 2026215 PMAQI
8th Jan 2026196 PMAQI
8th Jan 2026177 PMAQI
8th Jan 2026198 PMAQI
8th Jan 2026199 PMAQI
8th Jan 20262110 PMAQI
8th Jan 20261911 PMAQI
9th Jan 20261412 AMAQI
9th Jan 2026141 AMAQI
9th Jan 2026142 AMAQI
9th Jan 2026213 AMAQI
9th Jan 2026234 AMAQI
9th Jan 2026195 AMAQI

3°C1/4°C

9th Jan 2026176 AMAQI
9th Jan 2026177 AMAQI
9th Jan 2026178 AMAQI
9th Jan 2026149 AMAQI
9th Jan 20261210 AMAQI
9th Jan 20261211 AMAQI
9th Jan 20261212 PMAQI
9th Jan 2026171 PMAQI
9th Jan 2026172 PMAQI
9th Jan 2026213 PMAQI
9th Jan 2026174 PMAQI
9th Jan 2026145 PMAQI
9th Jan 2026126 PMAQI
9th Jan 2026177 PMAQI
9th Jan 2026178 PMAQI
9th Jan 2026129 PMAQI
9th Jan 20261210 PMAQI
9th Jan 20261411 PMAQI
10th Jan 20261612 AMAQI
10th Jan 2026211 AMAQI
10th Jan 2026212 AMAQI
10th Jan 2026193 AMAQI
10th Jan 2026214 AMAQI
10th Jan 2026215 AMAQI

3°C1/5°C

10th Jan 2026166 AMAQI
10th Jan 2026107 AMAQI
10th Jan 202688 AMAQI
10th Jan 202689 AMAQI
10th Jan 20261210 AMAQI
10th Jan 20261411 AMAQI
10th Jan 20261712 PMAQI
10th Jan 2026231 PMAQI
10th Jan 2026292 PMAQI
10th Jan 2026293 PMAQI
10th Jan 2026254 PMAQI
10th Jan 2026275 PMAQI
10th Jan 2026336 PMAQI
10th Jan 2026367 PMAQI
10th Jan 2026278 PMAQI
10th Jan 2026219 PMAQI
10th Jan 20262110 PMAQI
10th Jan 20262511 PMAQI
11th Jan 20263612 AMAQI
11th Jan 2026381 AMAQI
11th Jan 2026272 AMAQI
11th Jan 2026403 AMAQI
11th Jan 2026424 AMAQI
11th Jan 2026425 AMAQI

6°C2/10°C

11th Jan 2026256 AMAQI
11th Jan 2026278 AMAQI
11th Jan 2026429 AMAQI
11th Jan 20263610 AMAQI
11th Jan 20263811 AMAQI
11th Jan 20263312 PMAQI
11th Jan 2026331 PMAQI
11th Jan 2026332 PMAQI
11th Jan 2026363 PMAQI
11th Jan 2026404 PMAQI
11th Jan 2026335 PMAQI
11th Jan 2026276 PMAQI
11th Jan 2026367 PMAQI
11th Jan 2026338 PMAQI
11th Jan 2026389 PMAQI
11th Jan 20263610 PMAQI
11th Jan 20263311 PMAQI
12th Jan 20263112 AMAQI
12th Jan 2026361 AMAQI
12th Jan 2026362 AMAQI
12th Jan 2026313 AMAQI
12th Jan 2026274 AMAQI
12th Jan 2026255 AMAQI

5°C1/7°C

12th Jan 2026346 AMAQI
12th Jan 2026257 AMAQI
12th Jan 2026218 AMAQI
12th Jan 2026259 AMAQI
12th Jan 20262510 AMAQI
12th Jan 20262111 AMAQI
12th Jan 20262712 PMAQI
12th Jan 2026311 PMAQI
12th Jan 2026292 PMAQI
12th Jan 2026293 PMAQI
12th Jan 2026254 PMAQI
12th Jan 2026195 PMAQI
12th Jan 2026196 PMAQI
12th Jan 2026177 PMAQI
12th Jan 2026128 PMAQI
12th Jan 2026169 PMAQI
12th Jan 20262110 PMAQI
12th Jan 20261711 PMAQI
13th Jan 20261712 AMAQI
13th Jan 2026231 AMAQI
13th Jan 2026292 AMAQI
13th Jan 2026233 AMAQI
13th Jan 2026184 AMAQI
13th Jan 2026255 AMAQI

3°C1/5°C

13th Jan 2026256 AMAQI
13th Jan 2026187 AMAQI
13th Jan 2026148 AMAQI
13th Jan 2026179 AMAQI
13th Jan 20261710 AMAQI
13th Jan 20261411 AMAQI
13th Jan 20262012 PMAQI
13th Jan 2026171 PMAQI
13th Jan 2026172 PMAQI
13th Jan 2026193 PMAQI
13th Jan 2026364 PMAQI
13th Jan 2026335 PMAQI
13th Jan 2026336 PMAQI
13th Jan 2026337 PMAQI
13th Jan 2026338 PMAQI
13th Jan 2026339 PMAQI
13th Jan 20263110 PMAQI
13th Jan 20262711 PMAQI
14th Jan 20262912 AMAQI
14th Jan 2026251 AMAQI
14th Jan 2026252 AMAQI
14th Jan 2026233 AMAQI
14th Jan 2026234 AMAQI
14th Jan 2026195 AMAQI

5°C3/9°C

14th Jan 2026196 AMAQI
14th Jan 2026217 AMAQI
14th Jan 2026198 AMAQI
14th Jan 2026179 AMAQI
14th Jan 20262110 AMAQI
14th Jan 20262511 AMAQI
14th Jan 20262312 PMAQI
14th Jan 2026251 PMAQI
14th Jan 2026252 PMAQI
14th Jan 2026293 PMAQI
14th Jan 2026234 PMAQI
14th Jan 2026215 PMAQI
14th Jan 2026256 PMAQI
14th Jan 2026217 PMAQI
14th Jan 2026198 PMAQI
14th Jan 2026259 PMAQI
14th Jan 20262110 PMAQI
14th Jan 20262111 PMAQI
15th Jan 20262312 AMAQI
15th Jan 2026231 AMAQI
15th Jan 2026212 AMAQI
15th Jan 2026123 AMAQI
15th Jan 2026234 AMAQI
15th Jan 2026275 AMAQI

2°C1/3°C

15th Jan 2026256 AMAQI
15th Jan 2026217 AMAQI
15th Jan 2026218 AMAQI
15th Jan 2026169 AMAQI
15th Jan 20261210 AMAQI
15th Jan 20261611 AMAQI
15th Jan 20261912 PMAQI
15th Jan 2026251 PMAQI
15th Jan 2026312 PMAQI
15th Jan 2026343 PMAQI
15th Jan 2026384 PMAQI
15th Jan 2026565 PMAQI
15th Jan 2026566 PMAQI
15th Jan 2026537 PMAQI
15th Jan 2026548 PMAQI
15th Jan 2026509 PMAQI
15th Jan 20264910 PMAQI
15th Jan 20265011 PMAQI
16th Jan 20265312 AMAQI
16th Jan 2026541 AMAQI
16th Jan 2026402 AMAQI
16th Jan 2026143 AMAQI
16th Jan 2026194 AMAQI
16th Jan 2026235 AMAQI

7°C4/9°C

16th Jan 2026626 AMAQI
16th Jan 2026757 AMAQI
16th Jan 2026798 AMAQI
16th Jan 2026729 AMAQI
16th Jan 20266410 AMAQI
16th Jan 20265511 AMAQI
16th Jan 20264912 PMAQI
16th Jan 2026531 PMAQI
16th Jan 2026512 PMAQI
16th Jan 2026383 PMAQI
16th Jan 2026274 PMAQI
16th Jan 2026295 PMAQI
16th Jan 2026426 PMAQI
16th Jan 2026517 PMAQI
16th Jan 2026568 PMAQI
16th Jan 2026509 PMAQI
16th Jan 20264910 PMAQI
16th Jan 20265611 PMAQI
17th Jan 20265412 AMAQI
17th Jan 2026541 AMAQI
17th Jan 2026532 AMAQI
17th Jan 2026533 AMAQI
17th Jan 2026524 AMAQI
17th Jan 2026515 AMAQI

8°C6/9°C

17th Jan 2026516 AMAQI
17th Jan 2026557 AMAQI
17th Jan 2026548 AMAQI
17th Jan 2026499 AMAQI
17th Jan 20264610 AMAQI
17th Jan 20264411 AMAQI
17th Jan 20264412 PMAQI
17th Jan 2026491 PMAQI
17th Jan 2026482 PMAQI
17th Jan 2026513 PMAQI
17th Jan 2026604 PMAQI
17th Jan 2026585 PMAQI
17th Jan 2026576 PMAQI
17th Jan 2026447 PMAQI
17th Jan 2026388 PMAQI
17th Jan 2026429 PMAQI
17th Jan 20264210 PMAQI
17th Jan 20264411 PMAQI
18th Jan 20264812 AMAQI
18th Jan 2026421 AMAQI
18th Jan 2026382 AMAQI
18th Jan 2026363 AMAQI
18th Jan 2026294 AMAQI
18th Jan 2026295 AMAQI

6°C4/10°C

18th Jan 2026296 AMAQI
18th Jan 2026277 AMAQI
18th Jan 2026298 AMAQI
18th Jan 2026319 AMAQI
18th Jan 20262310 AMAQI
18th Jan 20262311 AMAQI
18th Jan 20262312 PMAQI
18th Jan 2026211 PMAQI
18th Jan 2026253 PMAQI
18th Jan 2026254 PMAQI
18th Jan 2026295 PMAQI
18th Jan 2026276 PMAQI
18th Jan 2026337 PMAQI
18th Jan 2026388 PMAQI
18th Jan 2026429 PMAQI
18th Jan 20264010 PMAQI
18th Jan 20264811 PMAQI
19th Jan 20265412 AMAQI
19th Jan 2026551 AMAQI
19th Jan 2026482 AMAQI
19th Jan 2026443 AMAQI
19th Jan 2026444 AMAQI
19th Jan 2026405 AMAQI

3°C3/4°C

19th Jan 2026366 AMAQI
19th Jan 2026297 AMAQI
19th Jan 2026318 AMAQI
19th Jan 2026279 AMAQI
19th Jan 20262910 AMAQI
19th Jan 20262911 AMAQI
19th Jan 20262712 PMAQI
19th Jan 2026171 PMAQI
19th Jan 2026172 PMAQI
19th Jan 2026343 PMAQI
19th Jan 2026474 PMAQI
19th Jan 2026405 PMAQI
19th Jan 2026296 PMAQI
19th Jan 2026297 PMAQI
19th Jan 2026408 PMAQI
19th Jan 2026499 PMAQI
19th Jan 20265110 PMAQI
19th Jan 20265111 PMAQI
20th Jan 20264612 AMAQI
20th Jan 2026381 AMAQI
20th Jan 2026362 AMAQI
20th Jan 2026383 AMAQI
20th Jan 2026274 AMAQI
20th Jan 2026295 AMAQI

4°C2/8°C

20th Jan 2026256 AMAQI
20th Jan 2026237 AMAQI
20th Jan 2026128 AMAQI
20th Jan 2026179 AMAQI
20th Jan 20261910 AMAQI
20th Jan 20262111 AMAQI
20th Jan 20262312 PMAQI
20th Jan 2026251 PMAQI
20th Jan 2026272 PMAQI
20th Jan 2026253 PMAQI
20th Jan 2026294 PMAQI
20th Jan 2026315 PMAQI
20th Jan 2026346 PMAQI
20th Jan 2026317 PMAQI
20th Jan 2026298 PMAQI
20th Jan 2026299 PMAQI
20th Jan 20262310 PMAQI
20th Jan 20262311 PMAQI
21st Jan 20262512 AMAQI
21st Jan 2026251 AMAQI
21st Jan 2026212 AMAQI
21st Jan 2026183 AMAQI
21st Jan 2026214 AMAQI
21st Jan 2026235 AMAQI

1°C0/4°C

21st Jan 2026196 AMAQI
21st Jan 2026177 AMAQI
21st Jan 2026178 AMAQI
21st Jan 2026179 AMAQI
21st Jan 20261710 AMAQI
21st Jan 20261912 PMAQI
21st Jan 2026171 PMAQI
21st Jan 2026212 PMAQI
21st Jan 2026293 PMAQI
21st Jan 2026274 PMAQI
21st Jan 2026205 PMAQI
21st Jan 2026126 PMAQI
21st Jan 2026127 PMAQI
21st Jan 2026148 PMAQI
21st Jan 2026179 PMAQI
21st Jan 20261710 PMAQI
21st Jan 20261911 PMAQI
22nd Jan 20262312 AMAQI
22nd Jan 2026231 AMAQI
22nd Jan 2026232 AMAQI
22nd Jan 2026213 AMAQI
22nd Jan 2026194 AMAQI
22nd Jan 2026215 AMAQI

0°C-1/1°C

22nd Jan 2026216 AMAQI
22nd Jan 2026257 AMAQI
22nd Jan 2026178 AMAQI
22nd Jan 2026129 AMAQI
22nd Jan 20261010 AMAQI
22nd Jan 20261411 AMAQI
22nd Jan 20261712 PMAQI
22nd Jan 2026171 PMAQI
22nd Jan 2026312 PMAQI
22nd Jan 2026663 PMAQI
22nd Jan 202684 PMAQI
22nd Jan 2026245 PMAQI
22nd Jan 202686 PMAQI
22nd Jan 202687 PMAQI
22nd Jan 2026268 PMAQI
22nd Jan 2026439 PMAQI
22nd Jan 20262710 PMAQI
22nd Jan 20262411 PMAQI
23rd Jan 20261012 AMAQI
23rd Jan 2026241 AMAQI
23rd Jan 2026402 AMAQI
23rd Jan 2026253 AMAQI
23rd Jan 2026234 AMAQI
23rd Jan 2026445 AMAQI

0°C-1/0°C

23rd Jan 2026346 AMAQI
23rd Jan 2026127 AMAQI
23rd Jan 2026268 AMAQI
23rd Jan 2026539 AMAQI
23rd Jan 20265410 AMAQI
23rd Jan 20263411 AMAQI
23rd Jan 20263612 PMAQI
23rd Jan 2026341 PMAQI
23rd Jan 202682 PMAQI
23rd Jan 2026343 PMAQI
23rd Jan 2026294 PMAQI
23rd Jan 2026325 PMAQI
23rd Jan 2026526 PMAQI
23rd Jan 2026607 PMAQI
23rd Jan 2026288 PMAQI
23rd Jan 2026299 PMAQI
23rd Jan 20262910 PMAQI
23rd Jan 20263311 PMAQI
24th Jan 20263312 AMAQI
24th Jan 2026531 AMAQI
24th Jan 2026482 AMAQI
24th Jan 2026453 AMAQI
24th Jan 2026624 AMAQI
24th Jan 2026605 AMAQI

1°C0/3°C

24th Jan 2026266 AMAQI
24th Jan 202687 AMAQI
24th Jan 2026208 AMAQI
24th Jan 2026409 AMAQI
24th Jan 20264510 AMAQI
24th Jan 2026811 AMAQI
24th Jan 2026812 PMAQI
24th Jan 2026221 PMAQI
24th Jan 2026232 PMAQI
24th Jan 2026403 PMAQI
24th Jan 202684 PMAQI
24th Jan 2026155 PMAQI
24th Jan 2026166 PMAQI
24th Jan 2026287 PMAQI
24th Jan 2026368 PMAQI
24th Jan 2026269 PMAQI
24th Jan 20264910 PMAQI
24th Jan 20263111 PMAQI
25th Jan 20261012 AMAQI
25th Jan 2026481 AMAQI
25th Jan 2026802 AMAQI
25th Jan 2026523 AMAQI
25th Jan 2026274 AMAQI
25th Jan 2026625 AMAQI

1°C0/3°C

25th Jan 2026366 AMAQI
25th Jan 2026287 AMAQI
25th Jan 2026228 AMAQI
25th Jan 2026489 AMAQI
25th Jan 20266410 AMAQI
25th Jan 20264611 AMAQI
25th Jan 20264712 PMAQI
25th Jan 2026471 PMAQI
25th Jan 2026402 PMAQI
25th Jan 2026503 PMAQI
25th Jan 2026204 PMAQI
25th Jan 2026205 PMAQI
25th Jan 202686 PMAQI
25th Jan 2026227 PMAQI
25th Jan 2026528 PMAQI
25th Jan 2026429 PMAQI
25th Jan 20263810 PMAQI
25th Jan 20262711 PMAQI
26th Jan 20263212 AMAQI
26th Jan 2026321 AMAQI
26th Jan 2026422 AMAQI
26th Jan 2026223 AMAQI
26th Jan 2026284 AMAQI
26th Jan 2026545 AMAQI

0°C-1/0°C

26th Jan 2026346 AMAQI
26th Jan 2026187 AMAQI
26th Jan 2026208 AMAQI
26th Jan 2026349 AMAQI
26th Jan 2026811 AMAQI
26th Jan 20264512 PMAQI
26th Jan 2026461 PMAQI
26th Jan 2026102 PMAQI
26th Jan 2026263 PMAQI
26th Jan 202684 PMAQI
26th Jan 202685 PMAQI
26th Jan 202686 PMAQI
26th Jan 2026107 PMAQI
26th Jan 2026108 PMAQI
26th Jan 202689 PMAQI
26th Jan 20262810 PMAQI
26th Jan 20264211 PMAQI
27th Jan 20264512 AMAQI
27th Jan 2026511 AMAQI
27th Jan 2026542 AMAQI
27th Jan 2026533 AMAQI
27th Jan 2026264 AMAQI
27th Jan 2026425 AMAQI

1°C-1/3°C

27th Jan 2026266 AMAQI
27th Jan 2026387 AMAQI
27th Jan 2026428 AMAQI
27th Jan 2026319 AMAQI
27th Jan 20264910 AMAQI
27th Jan 20262611 AMAQI
27th Jan 20262612 PMAQI
27th Jan 2026121 PMAQI
27th Jan 2026322 PMAQI
27th Jan 2026283 PMAQI
27th Jan 2026294 PMAQI
27th Jan 2026265 PMAQI
27th Jan 2026326 PMAQI
27th Jan 2026187 PMAQI
27th Jan 2026288 PMAQI
27th Jan 2026259 PMAQI
27th Jan 20264410 PMAQI
27th Jan 20263411 PMAQI
28th Jan 20263212 AMAQI
28th Jan 2026361 AMAQI
28th Jan 2026382 AMAQI
28th Jan 2026423 AMAQI
28th Jan 2026204 AMAQI
28th Jan 2026325 AMAQI

2°C0/5°C

28th Jan 2026356 AMAQI
28th Jan 2026327 AMAQI
28th Jan 2026308 AMAQI
28th Jan 2026449 AMAQI
28th Jan 20264310 AMAQI
28th Jan 20262311 AMAQI
28th Jan 20263812 PMAQI
28th Jan 2026121 PMAQI
28th Jan 2026422 PMAQI
28th Jan 2026383 PMAQI
28th Jan 2026234 PMAQI
28th Jan 2026305 PMAQI
28th Jan 2026286 PMAQI
28th Jan 2026247 PMAQI
28th Jan 2026278 PMAQI
28th Jan 2026379 PMAQI
28th Jan 20262810 PMAQI
29th Jan 20263612 AMAQI
29th Jan 2026321 AMAQI
29th Jan 2026492 AMAQI
29th Jan 2026403 AMAQI
29th Jan 2026314 AMAQI
29th Jan 2026285 AMAQI

2°C2/3°C

29th Jan 2026286 AMAQI
29th Jan 2026367 AMAQI
29th Jan 2026178 AMAQI
29th Jan 2026289 AMAQI
29th Jan 20262710 AMAQI
29th Jan 20263211 AMAQI
29th Jan 20261212 PMAQI
29th Jan 2026122 PMAQI
29th Jan 2026123 PMAQI
29th Jan 2026124 PMAQI
29th Jan 2026175 PMAQI
29th Jan 2026146 PMAQI
29th Jan 2026167 PMAQI
29th Jan 2026218 PMAQI
29th Jan 2026349 PMAQI
29th Jan 20263310 PMAQI
29th Jan 20261211 PMAQI
30th Jan 20261212 AMAQI
30th Jan 2026461 AMAQI
30th Jan 2026512 AMAQI
30th Jan 2026443 AMAQI
30th Jan 2026654 AMAQI
30th Jan 2026795 AMAQI

2°C1/2°C

30th Jan 2026446 AMAQI
30th Jan 2026528 AMAQI
30th Jan 2026569 AMAQI
30th Jan 20265810 AMAQI
30th Jan 20263611 AMAQI
30th Jan 20264012 PMAQI
30th Jan 2026241 PMAQI
30th Jan 2026382 PMAQI
30th Jan 2026363 PMAQI
30th Jan 202684 PMAQI
30th Jan 2026205 PMAQI
30th Jan 2026186 PMAQI
30th Jan 2026187 PMAQI
30th Jan 2026148 PMAQI
30th Jan 202689 PMAQI
30th Jan 20261810 PMAQI
30th Jan 20262411 PMAQI
31st Jan 20262212 AMAQI
31st Jan 2026421 AMAQI
31st Jan 2026462 AMAQI
31st Jan 2026373 AMAQI
31st Jan 2026494 AMAQI
31st Jan 2026515 AMAQI

1°C0/2°C

31st Jan 2026606 AMAQI
31st Jan 2026547 AMAQI
31st Jan 2026468 AMAQI
31st Jan 2026709 AMAQI
31st Jan 20268810 AMAQI
31st Jan 20264411 AMAQI
31st Jan 20264412 PMAQI
31st Jan 2026441 PMAQI
31st Jan 2026442 PMAQI
31st Jan 2026293 PMAQI
31st Jan 2026504 PMAQI
31st Jan 2026265 PMAQI
31st Jan 2026226 PMAQI
31st Jan 2026488 PMAQI
31st Jan 202689 PMAQI
31st Jan 2026810 PMAQI
31st Jan 2026811 PMAQI
1st Feb 2026812 AMAQI
1st Feb 202681 AMAQI
1st Feb 2026342 AMAQI
1st Feb 2026293 AMAQI
1st Feb 2026334 AMAQI
1st Feb 2026665 AMAQI

2°C0/3°C

1st Feb 2026366 AMAQI
1st Feb 2026517 AMAQI
1st Feb 2026298 AMAQI
1st Feb 2026639 AMAQI
1st Feb 20267810 AMAQI
1st Feb 20263411 AMAQI
1st Feb 20261712 PMAQI
1st Feb 2026351 PMAQI
1st Feb 2026222 PMAQI
1st Feb 2026293 PMAQI
1st Feb 2026244 PMAQI
1st Feb 2026245 PMAQI
1st Feb 202686 PMAQI
1st Feb 2026207 PMAQI
1st Feb 2026238 PMAQI
1st Feb 2026269 PMAQI
1st Feb 20262210 PMAQI
1st Feb 20264311 PMAQI
2nd Feb 2026812 AMAQI
2nd Feb 2026381 AMAQI
2nd Feb 2026242 AMAQI
2nd Feb 2026413 AMAQI
2nd Feb 2026604 AMAQI
2nd Feb 2026725 AMAQI

2°C1/2°C

2nd Feb 2026296 AMAQI
2nd Feb 2026627 AMAQI
2nd Feb 2026318 AMAQI
2nd Feb 2026479 AMAQI
2nd Feb 20266010 AMAQI
2nd Feb 20265411 AMAQI
2nd Feb 20262712 PMAQI
2nd Feb 2026341 PMAQI
2nd Feb 2026142 PMAQI
2nd Feb 2026243 PMAQI
2nd Feb 2026504 PMAQI
2nd Feb 2026215 PMAQI
2nd Feb 2026196 PMAQI
2nd Feb 2026217 PMAQI
2nd Feb 2026268 PMAQI
2nd Feb 202689 PMAQI
2nd Feb 20261210 PMAQI
2nd Feb 20264611 PMAQI
3rd Feb 20264612 AMAQI
3rd Feb 2026311 AMAQI
3rd Feb 2026252 AMAQI
3rd Feb 2026363 AMAQI
3rd Feb 2026364 AMAQI
3rd Feb 2026325 AMAQI

2°C1/2°C

3rd Feb 2026176 AMAQI
3rd Feb 2026277 AMAQI
3rd Feb 2026218 AMAQI
3rd Feb 2026309 AMAQI
3rd Feb 20264910 AMAQI
3rd Feb 20262511 AMAQI
3rd Feb 20263312 PMAQI
3rd Feb 2026121 PMAQI
3rd Feb 2026442 PMAQI
3rd Feb 2026223 PMAQI
3rd Feb 2026345 PMAQI
3rd Feb 2026276 PMAQI
3rd Feb 2026277 PMAQI
3rd Feb 2026348 PMAQI
3rd Feb 2026519 PMAQI
3rd Feb 20261210 PMAQI
3rd Feb 20263011 PMAQI
4th Feb 20262612 AMAQI
4th Feb 2026201 AMAQI
4th Feb 2026292 AMAQI
4th Feb 2026403 AMAQI
4th Feb 2026484 AMAQI
4th Feb 2026505 AMAQI

3°C1/4°C

4th Feb 2026446 AMAQI
4th Feb 2026407 AMAQI
4th Feb 2026508 AMAQI
4th Feb 2026509 AMAQI
4th Feb 20265910 AMAQI
4th Feb 20265111 AMAQI
4th Feb 20264612 PMAQI
4th Feb 2026231 PMAQI
4th Feb 2026252 PMAQI
4th Feb 2026383 PMAQI
4th Feb 2026104 PMAQI
4th Feb 2026125 PMAQI
4th Feb 2026406 PMAQI
4th Feb 2026297 PMAQI
4th Feb 2026228 PMAQI
4th Feb 2026119 PMAQI
4th Feb 20263110 PMAQI
4th Feb 20263811 PMAQI
5th Feb 20266812 AMAQI
5th Feb 2026491 AMAQI
5th Feb 2026462 AMAQI
5th Feb 2026513 AMAQI
5th Feb 2026344 AMAQI
5th Feb 2026525 AMAQI

5°C1/8°C

5th Feb 2026406 AMAQI
5th Feb 2026457 AMAQI
5th Feb 2026468 AMAQI
5th Feb 2026589 AMAQI
5th Feb 20265710 AMAQI
5th Feb 20266311 AMAQI
5th Feb 20263212 PMAQI
5th Feb 2026421 PMAQI
5th Feb 2026382 PMAQI
5th Feb 2026393 PMAQI
5th Feb 2026394 PMAQI
5th Feb 2026345 PMAQI
5th Feb 2026166 PMAQI
5th Feb 2026267 PMAQI
5th Feb 2026358 PMAQI
5th Feb 2026389 PMAQI
5th Feb 20262710 PMAQI
5th Feb 20265011 PMAQI
6th Feb 20265012 AMAQI
6th Feb 2026441 AMAQI
6th Feb 2026412 AMAQI
6th Feb 2026343 AMAQI
6th Feb 2026504 AMAQI
6th Feb 2026605 AMAQI

8°C7/10°C

6th Feb 2026506 AMAQI
6 AM
6th Feb 2026447 AMAQI
6th Feb 2026488 AMAQI
6th Feb 2026489 AMAQI
6th Feb 20266910 AMAQI
6th Feb 20266911 AMAQI
11 AM
6th Feb 2026331 PMAQI
6th Feb 2026372 PMAQI
6th Feb 2026423 PMAQI
6th Feb 2026364 PMAQI
4 PM
6th Feb 2026415 PMAQI
6th Feb 2026326 PMAQI
6th Feb 2026127 PMAQI
6th Feb 2026108 PMAQI
6th Feb 2026189 PMAQI
6th Feb 20261410 PMAQI
6th Feb 20262211 PMAQI
11 PM
5 AM

4°C-1/7°C

Day time
Avg. Highest Time
10 AM

40AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 PM - 2 PM

28AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 40), while the lowest AQI was between 12 PM to 2 PM (Avg. 28).
Night time
Avg. Highest Time
5 AM

40AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
6 PM

26AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 40), while the lowest AQI was between 6 PM to 6 PM (Avg. 26).

2026 Days Vs Air Quality

Matsuhama, Niigata, Niigata, Japan

2026

100%

37

Total number of days with different AQI categories in last 38 days in 2026 (327 days remaining)

Good
37 Days
Moderate
0 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 100%

Health Risk Level:

Very Low

In 2026, 100% of 38 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

Matsuhama, Niigata, Niigata, 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
18AQI (US)
2nd January 2026
19AQI (US)
3rd January 2026
17AQI (US)
4th January 2026
27AQI (US)
5th January 2026
15AQI (US)
6th January 2026
24AQI (US)
7th January 2026
22AQI (US)
8th January 2026
20AQI (US)
9th January 2026
16AQI (US)
10th January 2026
21AQI (US)
11th January 2026
35AQI (US)
12th January 2026
25AQI (US)
13th January 2026
24AQI (US)
14th January 2026
23AQI (US)
15th January 2026
31AQI (US)
16th January 2026
48AQI (US)
17th January 2026
50AQI (US)
18th January 2026
32AQI (US)
19th January 2026
37AQI (US)
20th January 2026
28AQI (US)
21st January 2026
19AQI (US)
22nd January 2026
22AQI (US)
23rd January 2026
33AQI (US)
24th January 2026
31AQI (US)
25th January 2026
39AQI (US)
26th January 2026
25AQI (US)
27th January 2026
34AQI (US)
28th January 2026
32AQI (US)
29th January 2026
25AQI (US)
30th January 2026
35AQI (US)
31st January 2026
41AQI (US)
1st February 2026
32AQI (US)
2nd February 2026
34AQI (US)
3rd February 2026
30AQI (US)
4th February 2026
35AQI (US)
5th February 2026
43AQI (US)
6th February 2026
39AQI (US)
7th February 2026
8th February 2026
9th February 2026
10th February 2026
11th February 2026
12th February 2026
13th February 2026
14th February 2026
15th February 2026
16th February 2026
17th February 2026
18th February 2026
19th February 2026
20th February 2026
21st February 2026
22nd February 2026
23rd February 2026
24th February 2026
25th February 2026
26th February 2026
27th February 2026
28th February 2026
1st March 2026
2nd March 2026
3rd March 2026
4th March 2026
5th March 2026
6th March 2026
7th March 2026
8th March 2026
9th March 2026
10th March 2026
11th March 2026
12th March 2026
13th March 2026
14th March 2026
15th March 2026
16th March 2026
17th March 2026
18th March 2026
19th March 2026
20th March 2026
21st March 2026
22nd March 2026
23rd March 2026
24th March 2026
25th March 2026
26th March 2026
27th March 2026
28th March 2026
29th March 2026
30th March 2026
31st March 2026
1st April 2026
2nd April 2026
3rd April 2026
4th April 2026
5th April 2026
6th April 2026
7th April 2026
8th April 2026
9th April 2026
10th April 2026
11th April 2026
12th April 2026
13th April 2026
14th April 2026
15th April 2026
16th April 2026
17th April 2026
18th April 2026
19th April 2026
20th April 2026
21st April 2026
22nd April 2026
23rd April 2026
24th April 2026
25th April 2026
26th April 2026
27th April 2026
28th April 2026
29th April 2026
30th April 2026
1st May 2026
2nd May 2026
3rd May 2026
4th May 2026
5th May 2026
6th May 2026
7th May 2026
8th May 2026
9th May 2026
10th May 2026
11th May 2026
12th May 2026
13th May 2026
14th May 2026
15th May 2026
16th May 2026
17th May 2026
18th May 2026
19th May 2026
20th May 2026
21st May 2026
22nd May 2026
23rd May 2026
24th May 2026
25th May 2026
26th May 2026
27th May 2026
28th May 2026
29th May 2026
30th May 2026
31st May 2026
1st June 2026
2nd June 2026
3rd June 2026
4th June 2026
5th June 2026
6th June 2026
7th June 2026
8th June 2026
9th June 2026
10th June 2026
11th June 2026
12th June 2026
13th June 2026
14th June 2026
15th June 2026
16th June 2026
17th June 2026
18th June 2026
19th June 2026
20th June 2026
21st June 2026
22nd June 2026
23rd June 2026
24th June 2026
25th June 2026
26th June 2026
27th June 2026
28th June 2026
29th June 2026
30th June 2026
1st July 2026
2nd July 2026
3rd July 2026
4th July 2026
5th July 2026
6th July 2026
7th July 2026
8th July 2026
9th July 2026
10th July 2026
11th July 2026
12th July 2026
13th July 2026
14th July 2026
15th July 2026
16th July 2026
17th July 2026
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

28AQI (US)

36AQI (US)

No. of days

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

202629AQI (US)

31
6
37

Highest AQI (US) recorded in

February

36AQI (US)

Lowest AQI (US) recorded in

January

28AQI (US)

202539AQI (US)

31
27
1
23
8
27
3
26
5
24
6
22
9
28
3
30
24
7
27
3
28
3
317
48

Highest AQI (US) recorded in

July

48AQI (US)

Lowest AQI (US) recorded in

January

30AQI (US)

202435AQI (US)

31
28
1
27
4
19
11
30
1
23
7
27
4
31
30
31
28
2
31
336
30

Highest AQI (US) recorded in

April

48AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

202336AQI (US)

31
26
2
23
8
24
6
23
8
25
5
24
7
31
30
31
28
1
31
327
37

Highest AQI (US) recorded in

April

46AQI (US)

Lowest AQI (US) recorded in

October

29AQI (US)

202235AQI (US)

30
21
28
3
15
3
20
11
26
4
21
1
28
30
1
27
3
31
278
25

Highest AQI (US) recorded in

May

46AQI (US)

Lowest AQI (US) recorded in

December

28AQI (US)

202131AQI (US)

30
1
26
2
27
2
18
3
29
2
24
6
31
29
2
30
31
29
1
19
323
19

Highest AQI (US) recorded in

June

39AQI (US)

Lowest AQI (US) recorded in

January

25AQI (US)

202027AQI (US)

13
21
18
26
4
28
1
21
8
2
19
31
27
3
31
235
16
2

Highest AQI (US) recorded in

August

45AQI (US)

Lowest AQI (US) recorded in

December

19AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
39AQI (US)
Least Polluted Year Recorded
2020(Avg.)
27AQI (US)

Matsuhama's annual 2026 AQI (US) (29) shows an average percentage change of -12.3% (improved AQI (US)) compared to previous years: 2020 (27), 2021 (31), 2022 (35), 2023 (36), 2024 (35), 2025 (39).