Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Masuda, Shimane, 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+

July Air Quality Analysis

Masuda, Shimane, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
24th Jul 2022
72AQI
Lowest AQI recorded on
4th Jul 2022
10AQI

Same Day Analysis (18th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 44 of Good air quality, showing improvement over 2024 and 2022 on the same day.

Day & Night AQI Trend: 17th Jul - 18th Jul 2026

Masuda, Shimane, Japan

AQI
Day
Night
.

5 AM17th Jul 2026

7 PM

4 AM18th Jul 2026

Day time
Avg. Highest Time
4PM17th Jul

37AQI

Avg. Lowest Time
1PM17th Jul

23AQI

Night time
Avg. Highest Time
8PM17th Jul

36AQI

Avg. Lowest Time
4AM18th Jul

31AQI

In the last 24 hours,

Masuda's AQI reached its highest point of 37 at 4 PM during the Day, while the lowest point, 23, was recorded at 1 PM during the Day between 17th Jul and 18th Jul 2026.

Day & Night AQI Trend : Jun - Jul 2026

Masuda, Shimane, Japan

JunJul
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
19th Jun 2026365 AMAQI
19th Jun 2026346 AMAQI
19th Jun 2026587 AMAQI
19th Jun 2026528 AMAQI
19th Jun 2026449 AMAQI
19th Jun 20264910 AMAQI
19th Jun 20264711 AMAQI
19th Jun 20265612 PMAQI
19th Jun 2026541 PMAQI
19th Jun 2026602 PMAQI
19th Jun 2026533 PMAQI
19th Jun 2026464 PMAQI
19th Jun 2026365 PMAQI
19th Jun 2026376 PMAQI
19th Jun 2026437 PMAQI
19th Jun 2026318 PMAQI
19th Jun 2026369 PMAQI
19th Jun 20262410 PMAQI
19th Jun 20262811 PMAQI
20th Jun 20262412 AMAQI
20th Jun 2026211 AMAQI
20th Jun 2026282 AMAQI
20th Jun 2026123 AMAQI
20th Jun 2026134 AMAQI

23°C21/26°C

20th Jun 2026125 AMAQI
20th Jun 2026126 AMAQI
20th Jun 2026127 AMAQI
20th Jun 2026248 AMAQI
20th Jun 2026179 AMAQI
20th Jun 20261710 AMAQI
20th Jun 20261611 AMAQI
20th Jun 20262312 PMAQI
20th Jun 2026431 PMAQI
20th Jun 2026212 PMAQI
20th Jun 2026193 PMAQI
20th Jun 2026124 PMAQI
20th Jun 2026175 PMAQI
20th Jun 2026176 PMAQI
20th Jun 2026177 PMAQI
20th Jun 2026178 PMAQI
20th Jun 2026219 PMAQI
20th Jun 20262110 PMAQI
20th Jun 20261411 PMAQI
21st Jun 20261912 AMAQI
21st Jun 2026171 AMAQI
21st Jun 202682 AMAQI
21st Jun 202673 AMAQI
21st Jun 202684 AMAQI

23°C21/24°C

21st Jun 2026165 AMAQI
21st Jun 2026126 AMAQI
21st Jun 2026177 AMAQI
21st Jun 2026288 AMAQI
21st Jun 2026189 AMAQI
21st Jun 20261810 AMAQI
21st Jun 20262011 AMAQI
21st Jun 20261912 PMAQI
21st Jun 2026201 PMAQI
21st Jun 2026192 PMAQI
21st Jun 2026213 PMAQI
21st Jun 2026194 PMAQI
21st Jun 2026205 PMAQI
21st Jun 2026186 PMAQI
21st Jun 2026187 PMAQI
21st Jun 2026188 PMAQI
21st Jun 2026189 PMAQI
21st Jun 20262010 PMAQI
21st Jun 20262011 PMAQI
22nd Jun 20262212 AMAQI
22nd Jun 2026221 AMAQI
22nd Jun 2026232 AMAQI
22nd Jun 2026213 AMAQI
22nd Jun 2026204 AMAQI

21°C20/22°C

22nd Jun 2026205 AMAQI
22nd Jun 2026186 AMAQI
22nd Jun 2026147 AMAQI
22nd Jun 2026188 AMAQI
22nd Jun 2026199 AMAQI
22nd Jun 20261910 AMAQI
22nd Jun 20261611 AMAQI
22nd Jun 20261812 PMAQI
22nd Jun 2026161 PMAQI
22nd Jun 2026182 PMAQI
22nd Jun 2026183 PMAQI
22nd Jun 2026204 PMAQI
22nd Jun 2026185 PMAQI
22nd Jun 2026166 PMAQI
22nd Jun 2026187 PMAQI
22nd Jun 2026188 PMAQI
22nd Jun 2026189 PMAQI
22nd Jun 20261810 PMAQI
22nd Jun 20261911 PMAQI
23rd Jun 20262112 AMAQI
23rd Jun 2026221 AMAQI
23rd Jun 2026222 AMAQI
23rd Jun 2026243 AMAQI
23rd Jun 2026234 AMAQI

20°C19/21°C

23rd Jun 2026225 AMAQI
23rd Jun 2026226 AMAQI
23rd Jun 2026227 AMAQI
23rd Jun 2026248 AMAQI
23rd Jun 2026249 AMAQI
23rd Jun 20262210 AMAQI
23rd Jun 20262011 AMAQI
23rd Jun 20262012 PMAQI
23rd Jun 2026221 PMAQI
23rd Jun 2026202 PMAQI
23rd Jun 2026203 PMAQI
23rd Jun 2026184 PMAQI
23rd Jun 2026185 PMAQI
23rd Jun 2026206 PMAQI
23rd Jun 2026197 PMAQI
23rd Jun 2026188 PMAQI
23rd Jun 2026199 PMAQI
23rd Jun 20261910 PMAQI
23rd Jun 20262411 PMAQI
24th Jun 20262212 AMAQI
24th Jun 2026231 AMAQI
24th Jun 2026222 AMAQI
24th Jun 2026223 AMAQI
24th Jun 2026224 AMAQI

20°C18/23°C

24th Jun 2026245 AMAQI
24th Jun 2026206 AMAQI
24th Jun 2026207 AMAQI
24th Jun 2026218 AMAQI
24th Jun 2026209 AMAQI
24th Jun 20262210 AMAQI
24th Jun 20262211 AMAQI
24th Jun 20262012 PMAQI
24th Jun 2026201 PMAQI
24th Jun 2026202 PMAQI
24th Jun 2026203 PMAQI
24th Jun 2026224 PMAQI
24th Jun 2026195 PMAQI
24th Jun 2026176 PMAQI
24th Jun 2026187 PMAQI
24th Jun 2026188 PMAQI
24th Jun 2026189 PMAQI
24th Jun 20261810 PMAQI
24th Jun 20262111 PMAQI
25th Jun 20262012 AMAQI
25th Jun 2026211 AMAQI
25th Jun 2026232 AMAQI
25th Jun 2026203 AMAQI
25th Jun 2026204 AMAQI

20°C19/21°C

25th Jun 2026205 AMAQI
25th Jun 2026206 AMAQI
25th Jun 2026207 AMAQI
25th Jun 2026208 AMAQI
25th Jun 2026209 AMAQI
25th Jun 20262110 AMAQI
25th Jun 20262211 AMAQI
25th Jun 20262212 PMAQI
25th Jun 2026241 PMAQI
25th Jun 2026292 PMAQI
25th Jun 2026263 PMAQI
25th Jun 2026314 PMAQI
25th Jun 2026275 PMAQI
25th Jun 2026266 PMAQI
25th Jun 2026487 PMAQI
25th Jun 2026568 PMAQI
25th Jun 2026429 PMAQI
25th Jun 20262210 PMAQI
25th Jun 20262711 PMAQI
26th Jun 20263012 AMAQI
26th Jun 2026261 AMAQI
26th Jun 2026262 AMAQI
26th Jun 2026243 AMAQI
26th Jun 2026264 AMAQI

21°C20/22°C

26th Jun 2026195 AMAQI
26th Jun 2026216 AMAQI
26th Jun 2026187 AMAQI
26th Jun 2026158 AMAQI
26th Jun 2026349 AMAQI
26th Jun 20266610 AMAQI
26th Jun 20265211 AMAQI
26th Jun 20265012 PMAQI
26th Jun 2026411 PMAQI
26th Jun 2026502 PMAQI
26th Jun 2026353 PMAQI
26th Jun 2026204 PMAQI
26th Jun 2026195 PMAQI
26th Jun 2026206 PMAQI
26th Jun 2026197 PMAQI
26th Jun 2026168 PMAQI
26th Jun 2026179 PMAQI
26th Jun 20261910 PMAQI
26th Jun 20262411 PMAQI
27th Jun 20262612 AMAQI
27th Jun 2026231 AMAQI
27th Jun 2026222 AMAQI
27th Jun 2026243 AMAQI
27th Jun 2026244 AMAQI

21°C20/22°C

27th Jun 2026245 AMAQI
27th Jun 2026246 AMAQI
27th Jun 2026247 AMAQI
27th Jun 2026248 AMAQI
27th Jun 2026399 AMAQI
27th Jun 20264310 AMAQI
27th Jun 20264111 AMAQI
27th Jun 20262812 PMAQI
27th Jun 2026241 PMAQI
27th Jun 2026252 PMAQI
27th Jun 2026243 PMAQI
27th Jun 2026274 PMAQI
27th Jun 2026245 PMAQI
27th Jun 2026256 PMAQI
27th Jun 2026247 PMAQI
27th Jun 2026268 PMAQI
27th Jun 2026259 PMAQI
27th Jun 20262610 PMAQI
27th Jun 20262711 PMAQI
28th Jun 20263012 AMAQI
28th Jun 2026281 AMAQI
28th Jun 2026262 AMAQI
28th Jun 2026283 AMAQI
28th Jun 2026264 AMAQI

21°C19/23°C

28th Jun 2026265 AMAQI
28th Jun 2026266 AMAQI
28th Jun 2026317 AMAQI
28th Jun 2026248 AMAQI
28th Jun 2026289 AMAQI
28th Jun 20263210 AMAQI
28th Jun 20262411 AMAQI
28th Jun 20262212 PMAQI
28th Jun 2026311 PMAQI
28th Jun 2026362 PMAQI
28th Jun 2026433 PMAQI
28th Jun 2026264 PMAQI
28th Jun 2026305 PMAQI
28th Jun 2026246 PMAQI
28th Jun 2026237 PMAQI
28th Jun 2026228 PMAQI
28th Jun 2026269 PMAQI
28th Jun 20262410 PMAQI
28th Jun 20262311 PMAQI
29th Jun 20262412 AMAQI
29th Jun 2026241 AMAQI
29th Jun 2026232 AMAQI
29th Jun 2026253 AMAQI
29th Jun 2026234 AMAQI

21°C20/23°C

29th Jun 2026325 AMAQI
29th Jun 2026266 AMAQI
29th Jun 2026237 AMAQI
29th Jun 2026348 AMAQI
29th Jun 2026339 AMAQI
29th Jun 20262510 AMAQI
29th Jun 20262211 AMAQI
29th Jun 20262112 PMAQI
29th Jun 2026201 PMAQI
29th Jun 2026312 PMAQI
29th Jun 2026303 PMAQI
29th Jun 2026274 PMAQI
29th Jun 2026225 PMAQI
29th Jun 2026306 PMAQI
29th Jun 2026267 PMAQI
29th Jun 2026228 PMAQI
29th Jun 2026219 PMAQI
29th Jun 20262210 PMAQI
29th Jun 20262411 PMAQI
30th Jun 20262312 AMAQI
30th Jun 2026221 AMAQI
30th Jun 2026262 AMAQI
30th Jun 2026223 AMAQI
30th Jun 2026244 AMAQI

21°C18/24°C

30th Jun 2026215 AMAQI
30th Jun 2026226 AMAQI
30th Jun 2026217 AMAQI
30th Jun 2026228 AMAQI
30th Jun 2026219 AMAQI
30th Jun 20262410 AMAQI
30th Jun 20262411 AMAQI
30th Jun 20262812 PMAQI
30th Jun 2026261 PMAQI
30th Jun 2026302 PMAQI
30th Jun 2026273 PMAQI
30th Jun 2026244 PMAQI
30th Jun 2026225 PMAQI
30th Jun 2026226 PMAQI
30th Jun 2026227 PMAQI
30th Jun 2026218 PMAQI
30th Jun 2026249 PMAQI
30th Jun 20262210 PMAQI
30th Jun 20262511 PMAQI
1st Jul 20263412 AMAQI
1st Jul 2026231 AMAQI
1st Jul 2026222 AMAQI
1st Jul 2026643 AMAQI
1st Jul 2026684 AMAQI

22°C19/25°C

1st Jul 2026665 AMAQI
1st Jul 2026656 AMAQI
1st Jul 2026737 AMAQI
1st Jul 2026348 AMAQI
1st Jul 2026279 AMAQI
1st Jul 20267810 AMAQI
1st Jul 20266611 AMAQI
1st Jul 20264412 PMAQI
1st Jul 2026411 PMAQI
1st Jul 2026362 PMAQI
1st Jul 2026103 PMAQI
1st Jul 2026234 PMAQI
1st Jul 2026145 PMAQI
1st Jul 202686 PMAQI
1st Jul 202687 PMAQI
1st Jul 202658 PMAQI
1st Jul 202679 PMAQI
1st Jul 20261010 PMAQI
1st Jul 20261711 PMAQI
2nd Jul 20261012 AMAQI
2nd Jul 202671 AMAQI
2nd Jul 202682 AMAQI
2nd Jul 202693 AMAQI
2nd Jul 2026124 AMAQI

22°C20/23°C

2nd Jul 202685 AMAQI
2nd Jul 202686 AMAQI
2nd Jul 2026107 AMAQI
2nd Jul 202688 AMAQI
2nd Jul 2026109 AMAQI
2nd Jul 20262010 AMAQI
2nd Jul 20261811 AMAQI
2nd Jul 20262412 PMAQI
2nd Jul 2026271 PMAQI
2nd Jul 2026282 PMAQI
2nd Jul 2026123 PMAQI
2nd Jul 2026124 PMAQI
2nd Jul 2026195 PMAQI
2nd Jul 2026186 PMAQI
2nd Jul 2026127 PMAQI
2nd Jul 2026128 PMAQI
2nd Jul 2026129 PMAQI
2nd Jul 2026810 PMAQI
2nd Jul 20261011 PMAQI
3rd Jul 20261212 AMAQI
3rd Jul 2026161 AMAQI
3rd Jul 2026172 AMAQI
3rd Jul 2026163 AMAQI
3rd Jul 2026144 AMAQI

22°C21/22°C

3rd Jul 2026185 AMAQI
3rd Jul 2026146 AMAQI
3rd Jul 2026147 AMAQI
3rd Jul 2026128 AMAQI
3rd Jul 2026179 AMAQI
3rd Jul 20261210 AMAQI
3rd Jul 20262011 AMAQI
3rd Jul 20262012 PMAQI
3rd Jul 2026231 PMAQI
3rd Jul 2026262 PMAQI
3rd Jul 2026273 PMAQI
3rd Jul 2026244 PMAQI
3rd Jul 2026245 PMAQI
3rd Jul 2026226 PMAQI
3rd Jul 2026257 PMAQI
3rd Jul 2026248 PMAQI
3rd Jul 2026229 PMAQI
3rd Jul 20262610 PMAQI
3rd Jul 20262811 PMAQI
4th Jul 20262812 AMAQI
4th Jul 2026251 AMAQI
4th Jul 2026262 AMAQI
4th Jul 2026263 AMAQI
4th Jul 2026234 AMAQI

22°C19/25°C

4th Jul 2026265 AMAQI
4th Jul 2026246 AMAQI
4th Jul 2026257 AMAQI
4th Jul 2026248 AMAQI
4th Jul 2026249 AMAQI
4th Jul 20262410 AMAQI
4th Jul 20262111 AMAQI
4th Jul 20262112 PMAQI
4th Jul 2026211 PMAQI
4th Jul 2026222 PMAQI
4th Jul 2026243 PMAQI
4th Jul 2026234 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026216 PMAQI
4th Jul 2026227 PMAQI
4th Jul 2026228 PMAQI
4th Jul 2026229 PMAQI
4th Jul 20262410 PMAQI
4th Jul 20262211 PMAQI
5th Jul 20262012 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026222 AMAQI
5th Jul 2026223 AMAQI
5th Jul 2026214 AMAQI

22°C20/23°C

5th Jul 2026215 AMAQI
5th Jul 2026226 AMAQI
5th Jul 2026227 AMAQI
5th Jul 2026218 AMAQI
5th Jul 2026169 AMAQI
5th Jul 20261810 AMAQI
5th Jul 20261811 AMAQI
5th Jul 20261612 PMAQI
5th Jul 2026181 PMAQI
5th Jul 2026202 PMAQI
5th Jul 2026223 PMAQI
5th Jul 2026224 PMAQI
5th Jul 2026185 PMAQI
5th Jul 2026206 PMAQI
5th Jul 2026207 PMAQI
5th Jul 2026208 PMAQI
5th Jul 2026229 PMAQI
5th Jul 20262010 PMAQI
5th Jul 20262211 PMAQI
6th Jul 20262212 AMAQI
6th Jul 2026231 AMAQI
6th Jul 2026222 AMAQI
6th Jul 2026233 AMAQI
6th Jul 2026204 AMAQI

23°C22/24°C

6th Jul 202685 AMAQI
6th Jul 2026156 AMAQI
6th Jul 202687 AMAQI
6th Jul 2026148 AMAQI
6th Jul 2026109 AMAQI
6th Jul 20261910 AMAQI
6th Jul 20261511 AMAQI
6th Jul 20261212 PMAQI
6th Jul 202681 PMAQI
6th Jul 202682 PMAQI
6th Jul 202683 PMAQI
6th Jul 2026164 PMAQI
6th Jul 2026205 PMAQI
6th Jul 2026186 PMAQI
6th Jul 202687 PMAQI
6th Jul 2026228 PMAQI
6th Jul 202689 PMAQI
6th Jul 20262410 PMAQI
6th Jul 20262611 PMAQI
7th Jul 20262312 AMAQI
7th Jul 202681 AMAQI
7th Jul 2026122 AMAQI
7th Jul 202683 AMAQI
7th Jul 2026244 AMAQI

24°C22/25°C

7th Jul 2026265 AMAQI
7th Jul 2026276 AMAQI
7th Jul 2026247 AMAQI
7th Jul 2026268 AMAQI
7th Jul 2026249 AMAQI
7th Jul 20262210 AMAQI
7th Jul 20262111 AMAQI
7th Jul 20262212 PMAQI
7th Jul 2026201 PMAQI
7th Jul 2026202 PMAQI
7th Jul 2026263 PMAQI
7th Jul 2026204 PMAQI
7th Jul 2026155 PMAQI
7th Jul 2026186 PMAQI
7th Jul 2026257 PMAQI
7th Jul 2026248 PMAQI
7th Jul 2026249 PMAQI
7th Jul 20262510 PMAQI
7th Jul 20262411 PMAQI
8th Jul 20262812 AMAQI
8th Jul 2026301 AMAQI
8th Jul 2026252 AMAQI
8th Jul 2026233 AMAQI
8th Jul 2026264 AMAQI

25°C22/28°C

8th Jul 2026275 AMAQI
8th Jul 2026246 AMAQI
8th Jul 2026257 AMAQI
8th Jul 2026288 AMAQI
8th Jul 2026259 AMAQI
8th Jul 20262610 AMAQI
8th Jul 20262111 AMAQI
8th Jul 20261812 PMAQI
8th Jul 2026211 PMAQI
8th Jul 2026242 PMAQI
8th Jul 2026223 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026225 PMAQI
8th Jul 2026236 PMAQI
8th Jul 2026187 PMAQI
8th Jul 2026178 PMAQI
8th Jul 2026209 PMAQI
8th Jul 20262010 PMAQI
8th Jul 20262011 PMAQI
9th Jul 20262812 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026202 AMAQI
9th Jul 2026223 AMAQI
9th Jul 2026164 AMAQI

26°C22/30°C

9th Jul 2026155 AMAQI
9th Jul 202686 AMAQI
9th Jul 202687 AMAQI
9th Jul 202688 AMAQI
9th Jul 2026209 AMAQI
9th Jul 2026810 AMAQI
9th Jul 20262011 AMAQI
9th Jul 20261612 PMAQI
9th Jul 202681 PMAQI
9th Jul 2026202 PMAQI
9th Jul 2026233 PMAQI
9th Jul 2026224 PMAQI
9th Jul 2026235 PMAQI
9th Jul 2026236 PMAQI
9th Jul 2026227 PMAQI
9th Jul 2026248 PMAQI
9th Jul 2026249 PMAQI
9th Jul 20262510 PMAQI
9th Jul 20262711 PMAQI
10th Jul 20262512 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026262 AMAQI
10th Jul 2026243 AMAQI
10th Jul 2026234 AMAQI

25°C22/28°C

10th Jul 2026165 AMAQI
10th Jul 2026266 AMAQI
10th Jul 2026247 AMAQI
10th Jul 2026168 AMAQI
10th Jul 2026179 AMAQI
10th Jul 20261710 AMAQI
10th Jul 20261211 AMAQI
10th Jul 20262312 PMAQI
10th Jul 2026241 PMAQI
10th Jul 2026222 PMAQI
10th Jul 2026203 PMAQI
10th Jul 2026224 PMAQI
10th Jul 2026265 PMAQI
10th Jul 2026266 PMAQI
10th Jul 2026287 PMAQI
10th Jul 2026268 PMAQI
10th Jul 2026279 PMAQI
10th Jul 20262810 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20261912 AMAQI
11th Jul 2026301 AMAQI
11th Jul 2026202 AMAQI
11th Jul 202683 AMAQI
11th Jul 202684 AMAQI

25°C21/28°C

11th Jul 202685 AMAQI
11th Jul 202686 AMAQI
11th Jul 202687 AMAQI
11th Jul 2026208 AMAQI
11th Jul 2026199 AMAQI
11th Jul 20261410 AMAQI
11th Jul 20261611 AMAQI
11th Jul 20262412 PMAQI
11th Jul 2026221 PMAQI
11th Jul 2026222 PMAQI
11th Jul 2026223 PMAQI
11th Jul 2026244 PMAQI
11th Jul 2026285 PMAQI
11th Jul 2026296 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026248 PMAQI
11th Jul 2026289 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262811 PMAQI
12th Jul 20262912 AMAQI
12th Jul 2026181 AMAQI
12th Jul 2026282 AMAQI
12th Jul 2026263 AMAQI
12th Jul 2026254 AMAQI

26°C22/29°C

12th Jul 2026265 AMAQI
12th Jul 2026276 AMAQI
12th Jul 2026277 AMAQI
12th Jul 2026168 AMAQI
12th Jul 2026269 AMAQI
12th Jul 20262710 AMAQI
12th Jul 20262311 AMAQI
12th Jul 20262412 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026222 PMAQI
12th Jul 2026203 PMAQI
12th Jul 2026224 PMAQI
12th Jul 2026305 PMAQI
12th Jul 2026276 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026268 PMAQI
12th Jul 2026289 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20262811 PMAQI
13th Jul 20262712 AMAQI
13th Jul 2026281 AMAQI
13th Jul 2026302 AMAQI
13th Jul 2026283 AMAQI
13th Jul 2026244 AMAQI

26°C23/30°C

13th Jul 2026285 AMAQI
13th Jul 2026266 AMAQI
13th Jul 2026267 AMAQI
13th Jul 2026278 AMAQI
13th Jul 2026269 AMAQI
13th Jul 20262910 AMAQI
13th Jul 20262611 AMAQI
13th Jul 20262512 PMAQI
13th Jul 2026231 PMAQI
13th Jul 2026222 PMAQI
13th Jul 2026233 PMAQI
13th Jul 2026264 PMAQI
13th Jul 2026285 PMAQI
13th Jul 2026286 PMAQI
13th Jul 2026327 PMAQI
13th Jul 2026418 PMAQI
13th Jul 2026469 PMAQI
13th Jul 20264210 PMAQI
13th Jul 20265511 PMAQI
14th Jul 20265212 AMAQI
14th Jul 2026461 AMAQI
14th Jul 2026302 AMAQI
14th Jul 2026303 AMAQI
14th Jul 2026264 AMAQI

27°C24/29°C

14th Jul 2026285 AMAQI
14th Jul 2026286 AMAQI
14th Jul 2026287 AMAQI
14th Jul 2026258 AMAQI
14th Jul 2026289 AMAQI
14th Jul 20263010 AMAQI
14th Jul 20262411 AMAQI
14th Jul 20262312 PMAQI
14th Jul 2026201 PMAQI
14th Jul 2026192 PMAQI
14th Jul 2026193 PMAQI
14th Jul 2026224 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026276 PMAQI
14th Jul 2026287 PMAQI
14th Jul 2026288 PMAQI
14th Jul 2026299 PMAQI
14th Jul 20263010 PMAQI
14th Jul 20263011 PMAQI
15th Jul 20263012 AMAQI
15th Jul 2026291 AMAQI
15th Jul 2026322 AMAQI
15th Jul 2026303 AMAQI
15th Jul 2026234 AMAQI

27°C24/30°C

15th Jul 2026265 AMAQI
15th Jul 2026226 AMAQI
15th Jul 2026287 AMAQI
15th Jul 2026288 AMAQI
15th Jul 2026309 AMAQI
15th Jul 20262910 AMAQI
15th Jul 20262211 AMAQI
15th Jul 20262012 PMAQI
15th Jul 2026181 PMAQI
15th Jul 2026192 PMAQI
15th Jul 2026183 PMAQI
15th Jul 2026214 PMAQI
15th Jul 2026225 PMAQI
15th Jul 2026256 PMAQI
15th Jul 2026207 PMAQI
15th Jul 2026238 PMAQI
15th Jul 2026229 PMAQI
15th Jul 20262810 PMAQI
15th Jul 20262411 PMAQI
16th Jul 20262512 AMAQI
16th Jul 2026241 AMAQI
16th Jul 2026282 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026264 AMAQI

27°C25/30°C

16th Jul 2026275 AMAQI
16th Jul 2026266 AMAQI
16th Jul 2026287 AMAQI
16th Jul 2026278 AMAQI
16th Jul 2026289 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20262611 AMAQI
16th Jul 20262612 PMAQI
16th Jul 2026261 PMAQI
16th Jul 2026242 PMAQI
16th Jul 2026263 PMAQI
16th Jul 2026234 PMAQI
16th Jul 2026265 PMAQI
16th Jul 2026296 PMAQI
16th Jul 2026287 PMAQI
16th Jul 2026278 PMAQI
16th Jul 2026289 PMAQI
16th Jul 20262810 PMAQI
16th Jul 20263011 PMAQI
17th Jul 20262912 AMAQI
17th Jul 2026291 AMAQI
17th Jul 2026282 AMAQI
17th Jul 2026293 AMAQI
17th Jul 2026284 AMAQI

26°C23/29°C

17th Jul 2026305 AMAQI
17th Jul 2026286 AMAQI
17th Jul 2026277 AMAQI
17th Jul 2026248 AMAQI
17th Jul 2026259 AMAQI
17th Jul 20262910 AMAQI
17th Jul 20262611 AMAQI
17th Jul 20262512 PMAQI
17th Jul 2026231 PMAQI
17th Jul 2026242 PMAQI
17th Jul 2026253 PMAQI
17th Jul 2026374 PMAQI
17th Jul 2026375 PMAQI
17th Jul 2026376 PMAQI
17th Jul 2026367 PMAQI
17th Jul 2026368 PMAQI
17th Jul 2026369 PMAQI
17th Jul 20263410 PMAQI
17th Jul 20263211 PMAQI
18th Jul 20263312 AMAQI
18th Jul 2026321 AMAQI
18th Jul 2026312 AMAQI
18th Jul 2026323 AMAQI
18th Jul 2026314 AMAQI

26°C23/29°C

18th Jul 2026315 AMAQI
5 AM
18th Jul 2026296 AMAQI
18th Jul 2026317 AMAQI
18th Jul 2026338 AMAQI
18th Jul 2026339 AMAQI
18th Jul 20263410 AMAQI
18th Jul 20263911 AMAQI
18th Jul 20264712 PMAQI
12 PM
18th Jul 2026431 PMAQI
18th Jul 2026452 PMAQI
18th Jul 2026483 PMAQI
18th Jul 2026524 PMAQI
18th Jul 2026565 PMAQI
18th Jul 2026596 PMAQI
18th Jul 2026627 PMAQI
7 PM
18th Jul 2026748 PMAQI
18th Jul 2026679 PMAQI
18th Jul 20265010 PMAQI
18th Jul 20265211 PMAQI
12 AM
4 AM

27°C24/30°C

Day time
Avg. Highest Time
10 AM

27AQI

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

23AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 27), while the lowest AQI was between 6 AM to 6 AM (Avg. 23).
Night time
Avg. Highest Time
12 AM

26AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM - 4 AM

23AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 26), while the lowest AQI was between 3 AM to 4 AM (Avg. 23).

2026 Days Vs Air Quality

Masuda, Shimane, Japan

2026

86%

172

14%

27

Total number of days with different AQI categories in last 199 days in 2026 (166 days remaining)

Good
172 Days
Moderate
27 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2026, 86% of 199 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

Masuda, Shimane, 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
20AQI (US)
2nd January 2026
19AQI (US)
3rd January 2026
31AQI (US)
4th January 2026
35AQI (US)
5th January 2026
47AQI (US)
6th January 2026
23AQI (US)
7th January 2026
28AQI (US)
8th January 2026
24AQI (US)
9th January 2026
15AQI (US)
10th January 2026
30AQI (US)
11th January 2026
30AQI (US)
12th January 2026
28AQI (US)
13th January 2026
34AQI (US)
14th January 2026
16AQI (US)
15th January 2026
45AQI (US)
16th January 2026
59AQI (US)
17th January 2026
51AQI (US)
18th January 2026
58AQI (US)
19th January 2026
62AQI (US)
20th January 2026
36AQI (US)
21st January 2026
18AQI (US)
22nd January 2026
24AQI (US)
23rd January 2026
38AQI (US)
24th January 2026
40AQI (US)
25th January 2026
12AQI (US)
26th January 2026
16AQI (US)
27th January 2026
42AQI (US)
28th January 2026
26AQI (US)
29th January 2026
32AQI (US)
30th January 2026
19AQI (US)
31st January 2026
18AQI (US)
1st February 2026
46AQI (US)
2nd February 2026
42AQI (US)
3rd February 2026
27AQI (US)
4th February 2026
33AQI (US)
5th February 2026
42AQI (US)
6th February 2026
46AQI (US)
7th February 2026
14AQI (US)
8th February 2026
17AQI (US)
9th February 2026
36AQI (US)
10th February 2026
34AQI (US)
11th February 2026
44AQI (US)
12th February 2026
50AQI (US)
13th February 2026
51AQI (US)
14th February 2026
41AQI (US)
15th February 2026
38AQI (US)
16th February 2026
48AQI (US)
17th February 2026
25AQI (US)
18th February 2026
26AQI (US)
19th February 2026
42AQI (US)
20th February 2026
38AQI (US)
21st February 2026
48AQI (US)
22nd February 2026
31AQI (US)
23rd February 2026
23AQI (US)
24th February 2026
10AQI (US)
25th February 2026
15AQI (US)
26th February 2026
13AQI (US)
27th February 2026
48AQI (US)
28th February 2026
42AQI (US)
1st March 2026
36AQI (US)
2nd March 2026
52AQI (US)
3rd March 2026
22AQI (US)
4th March 2026
44AQI (US)
5th March 2026
50AQI (US)
6th March 2026
48AQI (US)
7th March 2026
50AQI (US)
8th March 2026
37AQI (US)
9th March 2026
34AQI (US)
10th March 2026
58AQI (US)
11th March 2026
54AQI (US)
12th March 2026
60AQI (US)
13th March 2026
38AQI (US)
14th March 2026
44AQI (US)
15th March 2026
59AQI (US)
16th March 2026
54AQI (US)
17th March 2026
46AQI (US)
18th March 2026
50AQI (US)
19th March 2026
54AQI (US)
20th March 2026
44AQI (US)
21st March 2026
28AQI (US)
22nd March 2026
42AQI (US)
23rd March 2026
44AQI (US)
24th March 2026
58AQI (US)
25th March 2026
44AQI (US)
26th March 2026
20AQI (US)
27th March 2026
52AQI (US)
28th March 2026
66AQI (US)
29th March 2026
72AQI (US)
30th March 2026
52AQI (US)
31st March 2026
14AQI (US)
1st April 2026
13AQI (US)
2nd April 2026
54AQI (US)
3rd April 2026
50AQI (US)
4th April 2026
42AQI (US)
5th April 2026
40AQI (US)
6th April 2026
44AQI (US)
7th April 2026
22AQI (US)
8th April 2026
24AQI (US)
9th April 2026
31AQI (US)
10th April 2026
45AQI (US)
11th April 2026
30AQI (US)
12th April 2026
40AQI (US)
13th April 2026
38AQI (US)
14th April 2026
38AQI (US)
15th April 2026
29AQI (US)
16th April 2026
20AQI (US)
17th April 2026
37AQI (US)
18th April 2026
26AQI (US)
19th April 2026
33AQI (US)
20th April 2026
36AQI (US)
21st April 2026
41AQI (US)
22nd April 2026
43AQI (US)
23rd April 2026
24AQI (US)
24th April 2026
30AQI (US)
25th April 2026
38AQI (US)
26th April 2026
38AQI (US)
27th April 2026
44AQI (US)
28th April 2026
46AQI (US)
29th April 2026
38AQI (US)
30th April 2026
27AQI (US)
1st May 2026
49AQI (US)
2nd May 2026
42AQI (US)
3rd May 2026
33AQI (US)
4th May 2026
26AQI (US)
5th May 2026
30AQI (US)
6th May 2026
29AQI (US)
7th May 2026
32AQI (US)
8th May 2026
26AQI (US)
9th May 2026
26AQI (US)
10th May 2026
22AQI (US)
11th May 2026
33AQI (US)
12th May 2026
30AQI (US)
13th May 2026
40AQI (US)
14th May 2026
33AQI (US)
15th May 2026
32AQI (US)
16th May 2026
76AQI (US)
17th May 2026
62AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
60AQI (US)
21st May 2026
66AQI (US)
22nd May 2026
70AQI (US)
23rd May 2026
62AQI (US)
24th May 2026
63AQI (US)
25th May 2026
56AQI (US)
26th May 2026
42AQI (US)
27th May 2026
24AQI (US)
28th May 2026
24AQI (US)
29th May 2026
24AQI (US)
30th May 2026
24AQI (US)
31st May 2026
26AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
25AQI (US)
3rd June 2026
26AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
21AQI (US)
8th June 2026
20AQI (US)
9th June 2026
22AQI (US)
10th June 2026
21AQI (US)
11th June 2026
24AQI (US)
12th June 2026
24AQI (US)
13th June 2026
25AQI (US)
14th June 2026
24AQI (US)
15th June 2026
24AQI (US)
16th June 2026
25AQI (US)
17th June 2026
23AQI (US)
18th June 2026
24AQI (US)
19th June 2026
40AQI (US)
20th June 2026
19AQI (US)
21st June 2026
18AQI (US)
22nd June 2026
18AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
20AQI (US)
25th June 2026
26AQI (US)
26th June 2026
28AQI (US)
27th June 2026
26AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
24AQI (US)
1st July 2026
35AQI (US)
2nd July 2026
14AQI (US)
3rd July 2026
20AQI (US)
4th July 2026
24AQI (US)
5th July 2026
20AQI (US)
6th July 2026
16AQI (US)
7th July 2026
22AQI (US)
8th July 2026
24AQI (US)
9th July 2026
19AQI (US)
10th July 2026
22AQI (US)
11th July 2026
20AQI (US)
12th July 2026
25AQI (US)
13th July 2026
30AQI (US)
14th July 2026
28AQI (US)
15th July 2026
25AQI (US)
16th July 2026
27AQI (US)
17th July 2026
30AQI (US)
18th July 2026
44AQI (US)
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

31AQI (US)

35AQI (US)

46AQI (US)

35AQI (US)

41AQI (US)

24AQI (US)

25AQI (US)

No. of days

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

202634AQI (US)

27
4
27
1
19
12
29
1
22
9
30
18
172
27

Highest AQI (US) recorded in

March

46AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202542AQI (US)

28
3
27
1
22
9
22
8
23
8
19
11
16
15
28
3
30
19
12
17
13
25
6
276
89

Highest AQI (US) recorded in

November

49AQI (US)

Lowest AQI (US) recorded in

September

29AQI (US)

202435AQI (US)

30
27
2
26
5
21
8
1
25
6
23
7
30
1
30
1
24
6
31
29
1
31
327
37
1

Highest AQI (US) recorded in

April

46AQI (US)

Lowest AQI (US) recorded in

July

27AQI (US)

202338AQI (US)

26
3
1
28
20
11
19
11
23
8
24
6
28
3
31
28
2
28
3
25
4
27
4
307
55
1

Highest AQI (US) recorded in

April

48AQI (US)

Lowest AQI (US) recorded in

August

29AQI (US)

202237AQI (US)

28
2
15
3
19
12
16
1
19
12
23
7
19
2
1
29
30
1
27
3
31
257
43

Highest AQI (US) recorded in

May

49AQI (US)

Lowest AQI (US) recorded in

December

30AQI (US)

202135AQI (US)

26
4
23
5
27
2
18
3
25
6
22
8
30
1
29
2
29
1
29
2
25
5
30
1
313
40

Highest AQI (US) recorded in

June

44AQI (US)

Lowest AQI (US) recorded in

September

30AQI (US)

202035AQI (US)

12
1
18
3
15
3
25
5
29
2
17
11
3
19
28
3
29
1
27
4
219
33
3

Highest AQI (US) recorded in

August

52AQI (US)

Lowest AQI (US) recorded in

July

27AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
42AQI (US)
Least Polluted Year Recorded
2026(Avg.)
34AQI (US)

Masuda's annual 2026 AQI (US) (34) shows an average percentage change of -7.7% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (35), 2022 (37), 2023 (38), 2024 (35), 2025 (42).