Niiza, Saitama, 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
Niiza, Saitama, Japan
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
60AQILowest AQI recorded on
25th Aug 2023
13AQISame Day Analysis (6th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 5th Aug - 6th Aug 2026
Niiza, Saitama, Japan
AQI
Day
Night
.
4 AM5th Aug 2026
6 PM
3 AM6th Aug 2026
Day time
Avg. Highest Time
9AM5th Aug
28AQI
Avg. Lowest Time
10AM5th Aug
24AQI
Night time
Avg. Highest Time
8PM5th Aug
26AQI
Avg. Lowest Time
2AM6th Aug
22AQI
In the last 24 hours,
Niiza's AQI reached its highest point of 28 at 9 AM during the Day, while the lowest point, 22, was recorded at 2 AM during the Night between 5th Aug and 6th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Niiza, Saitama, Japan
JulAug
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 Jul 2026274 AMAQI
8th Jul 2026285 AMAQI
8th Jul 2026276 AMAQI
8th Jul 2026287 AMAQI
8th Jul 2026288 AMAQI
8th Jul 2026259 AMAQI
8th Jul 20262410 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262412 PMAQI
8th Jul 2026231 PMAQI
8th Jul 2026242 PMAQI
8th Jul 2026263 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026245 PMAQI
8th Jul 2026226 PMAQI
8th Jul 2026207 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026219 PMAQI
8th Jul 20262210 PMAQI
8th Jul 20262411 PMAQI
9th Jul 20262712 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026262 AMAQI
9th Jul 2026153 AMAQI
26°C22/31°C
9th Jul 2026204 AMAQI
9th Jul 2026185 AMAQI
9th Jul 2026206 AMAQI
9th Jul 2026227 AMAQI
9th Jul 2026218 AMAQI
9th Jul 2026169 AMAQI
9th Jul 20262210 AMAQI
9th Jul 20262111 AMAQI
9th Jul 20262312 PMAQI
9th Jul 2026211 PMAQI
9th Jul 2026242 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026264 PMAQI
9th Jul 2026255 PMAQI
9th Jul 2026246 PMAQI
9th Jul 2026247 PMAQI
9th Jul 2026248 PMAQI
9th Jul 2026239 PMAQI
9th Jul 20262410 PMAQI
9th Jul 20262511 PMAQI
10th Jul 20262212 AMAQI
10th Jul 2026211 AMAQI
10th Jul 2026202 AMAQI
10th Jul 2026143 AMAQI
27°C24/32°C
10th Jul 2026204 AMAQI
10th Jul 2026145 AMAQI
10th Jul 2026206 AMAQI
10th Jul 2026227 AMAQI
10th Jul 2026238 AMAQI
10th Jul 2026269 AMAQI
10th Jul 20262710 AMAQI
10th Jul 20262511 AMAQI
10th Jul 20262612 PMAQI
10th Jul 2026251 PMAQI
10th Jul 2026222 PMAQI
10th Jul 2026223 PMAQI
10th Jul 2026244 PMAQI
10th Jul 2026285 PMAQI
10th Jul 2026286 PMAQI
10th Jul 2026267 PMAQI
10th Jul 2026278 PMAQI
10th Jul 2026289 PMAQI
10th Jul 20262910 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20262412 AMAQI
11th Jul 2026211 AMAQI
11th Jul 2026242 AMAQI
11th Jul 2026213 AMAQI
28°C24/33°C
11th Jul 2026204 AMAQI
11th Jul 2026305 AMAQI
11th Jul 2026306 AMAQI
11th Jul 2026297 AMAQI
11th Jul 2026308 AMAQI
11th Jul 2026319 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20262711 AMAQI
11th Jul 20262712 PMAQI
11th Jul 2026241 PMAQI
11th Jul 2026232 PMAQI
11th Jul 2026233 PMAQI
11th Jul 2026264 PMAQI
11th Jul 2026295 PMAQI
11th Jul 2026306 PMAQI
11th Jul 2026297 PMAQI
11th Jul 2026268 PMAQI
11th Jul 2026289 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262911 PMAQI
12th Jul 20262912 AMAQI
12th Jul 2026281 AMAQI
12th Jul 2026292 AMAQI
12th Jul 2026283 AMAQI
28°C25/33°C
12th Jul 2026244 AMAQI
12th Jul 2026275 AMAQI
12th Jul 2026286 AMAQI
12th Jul 2026277 AMAQI
12th Jul 2026288 AMAQI
12th Jul 2026289 AMAQI
12th Jul 20262810 AMAQI
12th Jul 20262511 AMAQI
12th Jul 20262512 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026232 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026264 PMAQI
12th Jul 2026295 PMAQI
12th Jul 2026316 PMAQI
12th Jul 2026297 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20263011 PMAQI
13th Jul 20263112 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026302 AMAQI
13th Jul 2026313 AMAQI
27°C25/30°C
13th Jul 2026284 AMAQI
13th Jul 2026305 AMAQI
13th Jul 2026296 AMAQI
13th Jul 2026287 AMAQI
13th Jul 2026308 AMAQI
13th Jul 2026309 AMAQI
13th Jul 20263210 AMAQI
13th Jul 20262811 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026241 PMAQI
13th Jul 2026232 PMAQI
13th Jul 2026243 PMAQI
13th Jul 2026254 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026357 PMAQI
13th Jul 2026348 PMAQI
13th Jul 2026339 PMAQI
13th Jul 20264010 PMAQI
13th Jul 20264211 PMAQI
14th Jul 20264312 AMAQI
14th Jul 2026441 AMAQI
14th Jul 2026442 AMAQI
14th Jul 2026403 AMAQI
28°C26/29°C
14th Jul 2026354 AMAQI
14th Jul 2026385 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026317 AMAQI
14th Jul 2026298 AMAQI
14th Jul 2026339 AMAQI
14th Jul 20263310 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262512 PMAQI
14th Jul 2026221 PMAQI
14th Jul 2026232 PMAQI
14th Jul 2026223 PMAQI
14th Jul 2026254 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026306 PMAQI
14th Jul 2026307 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026309 PMAQI
14th Jul 20263210 PMAQI
14th Jul 20263411 PMAQI
15th Jul 20263612 AMAQI
15th Jul 2026341 AMAQI
15th Jul 2026342 AMAQI
15th Jul 2026323 AMAQI
30°C26/34°C
15th Jul 2026294 AMAQI
15th Jul 2026315 AMAQI
15th Jul 2026286 AMAQI
15th Jul 2026317 AMAQI
15th Jul 2026328 AMAQI
15th Jul 2026299 AMAQI
15th Jul 20263110 AMAQI
15th Jul 20262811 AMAQI
15th Jul 20262612 PMAQI
15th Jul 2026241 PMAQI
15th Jul 2026232 PMAQI
15th Jul 2026223 PMAQI
15th Jul 2026244 PMAQI
15th Jul 2026305 PMAQI
15th Jul 2026276 PMAQI
15th Jul 2026247 PMAQI
15th Jul 2026288 PMAQI
15th Jul 2026409 PMAQI
15th Jul 20264010 PMAQI
15th Jul 20264211 PMAQI
16th Jul 20264212 AMAQI
16th Jul 2026431 AMAQI
16th Jul 2026372 AMAQI
16th Jul 2026303 AMAQI
31°C28/36°C
16th Jul 2026304 AMAQI
16th Jul 2026325 AMAQI
16th Jul 2026326 AMAQI
16th Jul 2026327 AMAQI
16th Jul 2026328 AMAQI
16th Jul 2026539 AMAQI
16th Jul 20265410 AMAQI
16th Jul 20265411 AMAQI
16th Jul 20265212 PMAQI
16th Jul 2026581 PMAQI
16th Jul 2026572 PMAQI
16th Jul 2026663 PMAQI
16th Jul 2026744 PMAQI
16th Jul 2026775 PMAQI
16th Jul 2026766 PMAQI
16th Jul 2026847 PMAQI
16th Jul 2026778 PMAQI
16th Jul 2026859 PMAQI
16th Jul 20267410 PMAQI
16th Jul 20265811 PMAQI
17th Jul 20265112 AMAQI
17th Jul 2026431 AMAQI
17th Jul 2026422 AMAQI
17th Jul 2026363 AMAQI
32°C28/37°C
17th Jul 2026324 AMAQI
17th Jul 2026325 AMAQI
17th Jul 2026306 AMAQI
17th Jul 2026297 AMAQI
17th Jul 2026318 AMAQI
17th Jul 2026359 AMAQI
17th Jul 20264710 AMAQI
17th Jul 20265511 AMAQI
17th Jul 20266012 PMAQI
17th Jul 2026641 PMAQI
17th Jul 2026602 PMAQI
17th Jul 2026523 PMAQI
17th Jul 2026474 PMAQI
17th Jul 2026385 PMAQI
17th Jul 2026386 PMAQI
17th Jul 2026487 PMAQI
17th Jul 2026508 PMAQI
17th Jul 2026579 PMAQI
17th Jul 20265610 PMAQI
17th Jul 20265411 PMAQI
18th Jul 20264712 AMAQI
18th Jul 2026501 AMAQI
18th Jul 2026462 AMAQI
18th Jul 2026433 AMAQI
29°C27/32°C
18th Jul 2026354 AMAQI
18th Jul 2026345 AMAQI
18th Jul 2026426 AMAQI
18th Jul 2026347 AMAQI
18th Jul 2026268 AMAQI
18th Jul 2026189 AMAQI
18th Jul 20262010 AMAQI
18th Jul 20262411 AMAQI
18th Jul 20262012 PMAQI
18th Jul 2026241 PMAQI
18th Jul 2026252 PMAQI
18th Jul 2026243 PMAQI
18th Jul 2026184 PMAQI
18th Jul 2026185 PMAQI
18th Jul 2026176 PMAQI
18th Jul 2026177 PMAQI
18th Jul 2026138 PMAQI
18th Jul 2026169 PMAQI
18th Jul 20262710 PMAQI
18th Jul 20263211 PMAQI
19th Jul 20263512 AMAQI
19th Jul 2026321 AMAQI
19th Jul 2026302 AMAQI
19th Jul 2026273 AMAQI
29°C26/32°C
19th Jul 2026254 AMAQI
19th Jul 2026265 AMAQI
19th Jul 2026236 AMAQI
19th Jul 2026237 AMAQI
19th Jul 2026238 AMAQI
19th Jul 2026229 AMAQI
19th Jul 20262110 AMAQI
19th Jul 20262511 AMAQI
19th Jul 20262212 PMAQI
19th Jul 2026221 PMAQI
19th Jul 2026242 PMAQI
19th Jul 2026283 PMAQI
19th Jul 2026334 PMAQI
19th Jul 2026325 PMAQI
19th Jul 2026326 PMAQI
19th Jul 2026287 PMAQI
19th Jul 2026268 PMAQI
19th Jul 2026279 PMAQI
19th Jul 20262910 PMAQI
19th Jul 20262811 PMAQI
20th Jul 20263512 AMAQI
20th Jul 2026331 AMAQI
20th Jul 2026392 AMAQI
20th Jul 2026243 AMAQI
29°C26/33°C
20th Jul 2026244 AMAQI
20th Jul 2026255 AMAQI
20th Jul 2026306 AMAQI
20th Jul 2026387 AMAQI
20th Jul 2026338 AMAQI
20th Jul 2026269 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20262611 AMAQI
20th Jul 20262612 PMAQI
20th Jul 2026241 PMAQI
20th Jul 2026522 PMAQI
20th Jul 2026493 PMAQI
20th Jul 2026494 PMAQI
20th Jul 2026485 PMAQI
20th Jul 2026456 PMAQI
20th Jul 2026477 PMAQI
20th Jul 2026478 PMAQI
20th Jul 2026469 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20264411 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026471 AMAQI
21st Jul 2026382 AMAQI
21st Jul 2026313 AMAQI
32°C28/37°C
21st Jul 2026284 AMAQI
21st Jul 2026305 AMAQI
21st Jul 2026266 AMAQI
21st Jul 2026247 AMAQI
21st Jul 2026278 AMAQI
21st Jul 2026469 AMAQI
21st Jul 20265010 AMAQI
21st Jul 20265311 AMAQI
21st Jul 2026581 PMAQI
21st Jul 2026632 PMAQI
21st Jul 2026673 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026555 PMAQI
21st Jul 2026546 PMAQI
21st Jul 2026907 PMAQI
21st Jul 2026528 PMAQI
21st Jul 2026509 PMAQI
21st Jul 20264910 PMAQI
21st Jul 20265111 PMAQI
22nd Jul 20265012 AMAQI
22nd Jul 2026501 AMAQI
22nd Jul 2026542 AMAQI
22nd Jul 2026533 AMAQI
34°C30/38°C
22nd Jul 2026544 AMAQI
22nd Jul 2026565 AMAQI
22nd Jul 2026546 AMAQI
22nd Jul 2026537 AMAQI
22nd Jul 2026508 AMAQI
22nd Jul 2026529 AMAQI
22nd Jul 20265610 AMAQI
22nd Jul 20266411 AMAQI
22nd Jul 20266712 PMAQI
22nd Jul 2026661 PMAQI
22nd Jul 2026692 PMAQI
22nd Jul 2026713 PMAQI
22nd Jul 2026694 PMAQI
22nd Jul 2026665 PMAQI
22nd Jul 2026676 PMAQI
22nd Jul 2026677 PMAQI
22nd Jul 2026668 PMAQI
22nd Jul 2026639 PMAQI
22nd Jul 20266410 PMAQI
22nd Jul 20267011 PMAQI
23rd Jul 20267312 AMAQI
23rd Jul 2026731 AMAQI
23rd Jul 2026602 AMAQI
23rd Jul 2026503 AMAQI
34°C29/38°C
23rd Jul 2026434 AMAQI
23rd Jul 2026445 AMAQI
23rd Jul 2026526 AMAQI
23rd Jul 2026527 AMAQI
23rd Jul 2026518 AMAQI
23rd Jul 2026559 AMAQI
23rd Jul 20265710 AMAQI
23rd Jul 20265711 AMAQI
23rd Jul 20266012 PMAQI
23rd Jul 2026581 PMAQI
23rd Jul 2026562 PMAQI
23rd Jul 2026653 PMAQI
23rd Jul 2026724 PMAQI
23rd Jul 2026665 PMAQI
23rd Jul 2026626 PMAQI
23rd Jul 2026627 PMAQI
23rd Jul 2026598 PMAQI
23rd Jul 2026509 PMAQI
23rd Jul 20264010 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20263212 AMAQI
24th Jul 2026301 AMAQI
24th Jul 2026322 AMAQI
24th Jul 2026323 AMAQI
33°C29/39°C
24th Jul 2026274 AMAQI
24th Jul 2026305 AMAQI
24th Jul 2026286 AMAQI
24th Jul 2026287 AMAQI
24th Jul 2026288 AMAQI
24th Jul 2026299 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263211 AMAQI
24th Jul 20264312 PMAQI
24th Jul 2026541 PMAQI
24th Jul 2026612 PMAQI
24th Jul 2026713 PMAQI
24th Jul 2026734 PMAQI
24th Jul 2026685 PMAQI
24th Jul 2026576 PMAQI
24th Jul 2026467 PMAQI
24th Jul 2026328 PMAQI
24th Jul 2026479 PMAQI
24th Jul 20264810 PMAQI
24th Jul 20265211 PMAQI
25th Jul 20264912 AMAQI
25th Jul 2026471 AMAQI
25th Jul 2026472 AMAQI
25th Jul 2026453 AMAQI
31°C28/35°C
25th Jul 2026374 AMAQI
25th Jul 2026335 AMAQI
25th Jul 2026336 AMAQI
25th Jul 2026347 AMAQI
25th Jul 2026358 AMAQI
25th Jul 2026339 AMAQI
25th Jul 20262910 AMAQI
25th Jul 20263411 AMAQI
25th Jul 20264612 PMAQI
25th Jul 2026451 PMAQI
25th Jul 2026412 PMAQI
25th Jul 2026373 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026355 PMAQI
25th Jul 2026386 PMAQI
25th Jul 2026247 PMAQI
25th Jul 2026218 PMAQI
25th Jul 2026219 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20263211 PMAQI
26th Jul 20262112 AMAQI
26th Jul 2026211 AMAQI
26th Jul 2026212 AMAQI
26th Jul 2026183 AMAQI
30°C26/36°C
26th Jul 2026284 AMAQI
26th Jul 2026285 AMAQI
26th Jul 2026346 AMAQI
26th Jul 2026207 AMAQI
26th Jul 2026168 AMAQI
26th Jul 2026189 AMAQI
26th Jul 20262010 AMAQI
26th Jul 20262411 AMAQI
26th Jul 20262812 PMAQI
26th Jul 2026341 PMAQI
26th Jul 2026372 PMAQI
26th Jul 2026443 PMAQI
26th Jul 2026284 PMAQI
26th Jul 2026245 PMAQI
26th Jul 2026286 PMAQI
26th Jul 2026327 PMAQI
26th Jul 2026248 PMAQI
26th Jul 2026229 PMAQI
26th Jul 20262210 PMAQI
26th Jul 20262211 PMAQI
27th Jul 20262412 AMAQI
27th Jul 2026221 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026253 AMAQI
29°C26/33°C
27th Jul 2026234 AMAQI
27th Jul 2026215 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026247 AMAQI
27th Jul 2026228 AMAQI
27th Jul 2026249 AMAQI
27th Jul 20262410 AMAQI
27th Jul 20262211 AMAQI
27th Jul 20262412 PMAQI
27th Jul 2026271 PMAQI
27th Jul 2026302 PMAQI
27th Jul 2026283 PMAQI
27th Jul 2026324 PMAQI
27th Jul 2026285 PMAQI
27th Jul 2026246 PMAQI
27th Jul 2026247 PMAQI
27th Jul 2026228 PMAQI
27th Jul 2026249 PMAQI
27th Jul 20262410 PMAQI
27th Jul 20262411 PMAQI
28th Jul 20262312 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026242 AMAQI
28th Jul 2026243 AMAQI
27°C24/32°C
28th Jul 2026244 AMAQI
28th Jul 2026255 AMAQI
28th Jul 2026246 AMAQI
28th Jul 2026247 AMAQI
28th Jul 2026248 AMAQI
28th Jul 2026259 AMAQI
28th Jul 20262410 AMAQI
28th Jul 20262311 AMAQI
28th Jul 20264012 PMAQI
28th Jul 2026491 PMAQI
28th Jul 2026522 PMAQI
28th Jul 2026503 PMAQI
28th Jul 2026464 PMAQI
28th Jul 2026315 PMAQI
28th Jul 2026356 PMAQI
28th Jul 2026337 PMAQI
28th Jul 2026328 PMAQI
28th Jul 2026349 PMAQI
28th Jul 20264010 PMAQI
28th Jul 20264211 PMAQI
29th Jul 20264412 AMAQI
29th Jul 2026481 AMAQI
29th Jul 2026402 AMAQI
29th Jul 2026503 AMAQI
27°C24/32°C
29th Jul 2026494 AMAQI
29th Jul 2026465 AMAQI
29th Jul 2026346 AMAQI
29th Jul 2026427 AMAQI
29th Jul 2026338 AMAQI
29th Jul 2026329 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20264211 AMAQI
29th Jul 20264212 PMAQI
29th Jul 2026341 PMAQI
29th Jul 2026372 PMAQI
29th Jul 2026383 PMAQI
29th Jul 2026374 PMAQI
29th Jul 2026445 PMAQI
29th Jul 2026246 PMAQI
29th Jul 2026227 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026259 PMAQI
29th Jul 20262210 PMAQI
29th Jul 20262611 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026221 AMAQI
30th Jul 2026222 AMAQI
30th Jul 2026243 AMAQI
30°C24/36°C
30th Jul 2026244 AMAQI
30th Jul 2026265 AMAQI
30th Jul 2026276 AMAQI
30th Jul 2026307 AMAQI
30th Jul 2026288 AMAQI
30th Jul 2026289 AMAQI
30th Jul 20262410 AMAQI
30th Jul 20262811 AMAQI
30th Jul 20264212 PMAQI
30th Jul 2026461 PMAQI
30th Jul 2026452 PMAQI
30th Jul 2026403 PMAQI
30th Jul 2026284 PMAQI
30th Jul 2026405 PMAQI
30th Jul 2026546 PMAQI
30th Jul 2026547 PMAQI
30th Jul 2026608 PMAQI
30th Jul 2026569 PMAQI
30th Jul 20264310 PMAQI
30th Jul 20264811 PMAQI
31st Jul 20265212 AMAQI
31st Jul 2026501 AMAQI
31st Jul 2026492 AMAQI
31st Jul 2026423 AMAQI
32°C28/37°C
31st Jul 2026384 AMAQI
31st Jul 2026435 AMAQI
31st Jul 2026486 AMAQI
31st Jul 2026447 AMAQI
31st Jul 2026458 AMAQI
31st Jul 2026449 AMAQI
31st Jul 20264710 AMAQI
31st Jul 20264511 AMAQI
31st Jul 20264812 PMAQI
31st Jul 2026461 PMAQI
31st Jul 2026462 PMAQI
31st Jul 2026523 PMAQI
31st Jul 2026514 PMAQI
31st Jul 2026515 PMAQI
31st Jul 2026576 PMAQI
31st Jul 2026637 PMAQI
31st Jul 2026678 PMAQI
31st Jul 2026569 PMAQI
31st Jul 20265810 PMAQI
31st Jul 20265911 PMAQI
1st Aug 20265212 AMAQI
1st Aug 2026481 AMAQI
1st Aug 2026532 AMAQI
1st Aug 2026503 AMAQI
31°C28/36°C
1st Aug 2026594 AMAQI
1st Aug 2026595 AMAQI
1st Aug 2026586 AMAQI
1st Aug 2026527 AMAQI
1st Aug 2026508 AMAQI
1st Aug 2026489 AMAQI
1st Aug 20265410 AMAQI
1st Aug 20266411 AMAQI
1st Aug 20265812 PMAQI
1st Aug 2026561 PMAQI
1st Aug 2026582 PMAQI
1st Aug 2026553 PMAQI
1st Aug 2026694 PMAQI
1st Aug 2026705 PMAQI
1st Aug 2026636 PMAQI
1st Aug 2026647 PMAQI
1st Aug 2026688 PMAQI
1st Aug 2026729 PMAQI
1st Aug 20265410 PMAQI
1st Aug 20265911 PMAQI
2nd Aug 20266012 AMAQI
2nd Aug 2026621 AMAQI
2nd Aug 2026652 AMAQI
2nd Aug 2026533 AMAQI
32°C28/37°C
2nd Aug 2026624 AMAQI
2nd Aug 2026545 AMAQI
2nd Aug 2026526 AMAQI
2nd Aug 2026497 AMAQI
2nd Aug 2026478 AMAQI
2nd Aug 2026479 AMAQI
2nd Aug 20264810 AMAQI
2nd Aug 20265211 AMAQI
2nd Aug 20264812 PMAQI
2nd Aug 2026511 PMAQI
2nd Aug 2026512 PMAQI
2nd Aug 2026563 PMAQI
2nd Aug 2026464 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026376 PMAQI
2nd Aug 2026287 PMAQI
2nd Aug 2026188 PMAQI
2nd Aug 2026299 PMAQI
2nd Aug 20262910 PMAQI
2nd Aug 20262711 PMAQI
3rd Aug 20262312 AMAQI
3rd Aug 2026231 AMAQI
3rd Aug 2026172 AMAQI
3rd Aug 2026153 AMAQI
31°C25/36°C
3rd Aug 2026104 AMAQI
3rd Aug 2026115 AMAQI
3rd Aug 2026106 AMAQI
3rd Aug 2026107 AMAQI
3rd Aug 202698 AMAQI
3rd Aug 2026119 AMAQI
3rd Aug 20261010 AMAQI
3rd Aug 20261111 AMAQI
3rd Aug 20261412 PMAQI
3rd Aug 2026161 PMAQI
3rd Aug 2026162 PMAQI
3rd Aug 2026223 PMAQI
3rd Aug 2026214 PMAQI
3rd Aug 2026265 PMAQI
3rd Aug 2026246 PMAQI
3rd Aug 2026187 PMAQI
3rd Aug 2026208 PMAQI
3rd Aug 2026269 PMAQI
3rd Aug 20262410 PMAQI
3rd Aug 20262411 PMAQI
4th Aug 20262312 AMAQI
4th Aug 2026231 AMAQI
4th Aug 2026222 AMAQI
4th Aug 2026243 AMAQI
25°C24/27°C
4th Aug 2026234 AMAQI
4th Aug 2026215 AMAQI
4th Aug 2026376 AMAQI
4th Aug 2026247 AMAQI
4th Aug 2026228 AMAQI
4th Aug 2026249 AMAQI
4th Aug 20262410 AMAQI
4th Aug 20262611 AMAQI
4th Aug 20262812 PMAQI
4th Aug 2026361 PMAQI
4th Aug 2026362 PMAQI
4th Aug 2026453 PMAQI
4th Aug 2026424 PMAQI
4th Aug 2026465 PMAQI
4th Aug 2026466 PMAQI
4th Aug 2026467 PMAQI
4th Aug 2026438 PMAQI
4th Aug 2026479 PMAQI
4th Aug 20264110 PMAQI
4th Aug 20264011 PMAQI
5th Aug 20264112 AMAQI
5th Aug 2026421 AMAQI
5th Aug 2026432 AMAQI
5th Aug 2026263 AMAQI
26°C22/31°C
5th Aug 2026264 AMAQI
5th Aug 2026275 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026267 AMAQI
5th Aug 2026268 AMAQI
5th Aug 2026289 AMAQI
5th Aug 20262410 AMAQI
5th Aug 20262511 AMAQI
5th Aug 20262612 PMAQI
5th Aug 2026281 PMAQI
5th Aug 2026262 PMAQI
5th Aug 2026283 PMAQI
5th Aug 2026274 PMAQI
5th Aug 2026285 PMAQI
5th Aug 2026286 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026268 PMAQI
5th Aug 2026249 PMAQI
5th Aug 20262410 PMAQI
5th Aug 20262211 PMAQI
6th Aug 20262312 AMAQI
6th Aug 2026241 AMAQI
6th Aug 2026222 AMAQI
6th Aug 2026243 AMAQI
27°C23/32°C
6th Aug 2026214 AMAQI
4 AM6th Aug 2026225 AMAQI
6th Aug 2026226 AMAQI
6th Aug 2026227 AMAQI
6th Aug 2026228 AMAQI
6th Aug 2026249 AMAQI
6th Aug 20262210 AMAQI
6th Aug 20262211 AMAQI
11 AM6th Aug 20262512 PMAQI
6th Aug 2026251 PMAQI
6th Aug 2026262 PMAQI
6th Aug 2026253 PMAQI
6th Aug 2026234 PMAQI
6th Aug 2026245 PMAQI
6th Aug 2026226 PMAQI
6 PM6th Aug 2026237 PMAQI
6th Aug 2026238 PMAQI
6th Aug 2026239 PMAQI
6th Aug 20262210 PMAQI
6th Aug 20262211 PMAQI
11 PM3 AM
30°C26/34°C
Day time
Avg. Highest Time
3 PM - 5 PM
40AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
8 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 5 PM (Avg. 40), while the lowest AQI was between 8 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
7 PM
39AQI
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. 39), while the lowest AQI was between 3 AM to 3 AM (Avg. 32).
2026 Days Vs Air Quality
Niiza, Saitama, Japan
2026
84%
183
16%
35
Total number of days with different AQI categories in last 218 days in 2026 (147 days remaining)
Good
183 DaysModerate
35 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 218 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
Niiza, Saitama, 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
24AQI (US)
24AQI (US)
2nd January 2026
21AQI (US)
21AQI (US)
3rd January 2026
21AQI (US)
21AQI (US)
4th January 2026
28AQI (US)
28AQI (US)
5th January 2026
44AQI (US)
44AQI (US)
6th January 2026
16AQI (US)
16AQI (US)
7th January 2026
30AQI (US)
30AQI (US)
8th January 2026
38AQI (US)
38AQI (US)
9th January 2026
20AQI (US)
20AQI (US)
10th January 2026
38AQI (US)
38AQI (US)
11th January 2026
39AQI (US)
39AQI (US)
12th January 2026
19AQI (US)
19AQI (US)
13th January 2026
38AQI (US)
38AQI (US)
14th January 2026
15AQI (US)
15AQI (US)
15th January 2026
34AQI (US)
34AQI (US)
16th January 2026
50AQI (US)
50AQI (US)
17th January 2026
52AQI (US)
52AQI (US)
18th January 2026
24AQI (US)
24AQI (US)
19th January 2026
50AQI (US)
50AQI (US)
20th January 2026
39AQI (US)
39AQI (US)
21st January 2026
15AQI (US)
15AQI (US)
22nd January 2026
24AQI (US)
24AQI (US)
23rd January 2026
39AQI (US)
39AQI (US)
24th January 2026
40AQI (US)
40AQI (US)
25th January 2026
45AQI (US)
45AQI (US)
26th January 2026
28AQI (US)
28AQI (US)
27th January 2026
41AQI (US)
41AQI (US)
28th January 2026
12AQI (US)
12AQI (US)
29th January 2026
19AQI (US)
19AQI (US)
30th January 2026
36AQI (US)
36AQI (US)
31st January 2026
36AQI (US)
36AQI (US)
1st February 2026
40AQI (US)
40AQI (US)
2nd February 2026
38AQI (US)
38AQI (US)
3rd February 2026
28AQI (US)
28AQI (US)
4th February 2026
39AQI (US)
39AQI (US)
5th February 2026
58AQI (US)
58AQI (US)
6th February 2026
53AQI (US)
53AQI (US)
7th February 2026
17AQI (US)
17AQI (US)
8th February 2026
17AQI (US)
17AQI (US)
9th February 2026
36AQI (US)
36AQI (US)
10th February 2026
39AQI (US)
39AQI (US)
11th February 2026
50AQI (US)
50AQI (US)
12th February 2026
28AQI (US)
28AQI (US)
13th February 2026
43AQI (US)
43AQI (US)
14th February 2026
45AQI (US)
45AQI (US)
15th February 2026
62AQI (US)
62AQI (US)
16th February 2026
44AQI (US)
44AQI (US)
17th February 2026
20AQI (US)
20AQI (US)
18th February 2026
35AQI (US)
35AQI (US)
19th February 2026
28AQI (US)
28AQI (US)
20th February 2026
28AQI (US)
28AQI (US)
21st February 2026
46AQI (US)
46AQI (US)
22nd February 2026
43AQI (US)
43AQI (US)
23rd February 2026
43AQI (US)
43AQI (US)
24th February 2026
43AQI (US)
43AQI (US)
25th February 2026
33AQI (US)
33AQI (US)
26th February 2026
11AQI (US)
11AQI (US)
27th February 2026
34AQI (US)
34AQI (US)
28th February 2026
46AQI (US)
46AQI (US)
1st March 2026
37AQI (US)
37AQI (US)
2nd March 2026
78AQI (US)
78AQI (US)
3rd March 2026
45AQI (US)
45AQI (US)
4th March 2026
58AQI (US)
58AQI (US)
5th March 2026
57AQI (US)
57AQI (US)
6th March 2026
53AQI (US)
53AQI (US)
7th March 2026
47AQI (US)
47AQI (US)
8th March 2026
42AQI (US)
42AQI (US)
9th March 2026
51AQI (US)
51AQI (US)
10th March 2026
58AQI (US)
58AQI (US)
11th March 2026
59AQI (US)
59AQI (US)
12th March 2026
68AQI (US)
68AQI (US)
13th March 2026
42AQI (US)
42AQI (US)
14th March 2026
47AQI (US)
47AQI (US)
15th March 2026
58AQI (US)
58AQI (US)
16th March 2026
56AQI (US)
56AQI (US)
17th March 2026
53AQI (US)
53AQI (US)
18th March 2026
57AQI (US)
57AQI (US)
19th March 2026
34AQI (US)
34AQI (US)
20th March 2026
31AQI (US)
31AQI (US)
21st March 2026
55AQI (US)
55AQI (US)
22nd March 2026
49AQI (US)
49AQI (US)
23rd March 2026
52AQI (US)
52AQI (US)
24th March 2026
56AQI (US)
56AQI (US)
25th March 2026
62AQI (US)
62AQI (US)
26th March 2026
32AQI (US)
32AQI (US)
27th March 2026
25AQI (US)
25AQI (US)
28th March 2026
45AQI (US)
45AQI (US)
29th March 2026
55AQI (US)
55AQI (US)
30th March 2026
54AQI (US)
54AQI (US)
31st March 2026
22AQI (US)
22AQI (US)
1st April 2026
24AQI (US)
24AQI (US)
2nd April 2026
36AQI (US)
36AQI (US)
3rd April 2026
44AQI (US)
44AQI (US)
4th April 2026
46AQI (US)
46AQI (US)
5th April 2026
37AQI (US)
37AQI (US)
6th April 2026
29AQI (US)
29AQI (US)
7th April 2026
38AQI (US)
38AQI (US)
8th April 2026
25AQI (US)
25AQI (US)
9th April 2026
34AQI (US)
34AQI (US)
10th April 2026
46AQI (US)
46AQI (US)
11th April 2026
44AQI (US)
44AQI (US)
12th April 2026
32AQI (US)
32AQI (US)
13th April 2026
38AQI (US)
38AQI (US)
14th April 2026
41AQI (US)
41AQI (US)
15th April 2026
41AQI (US)
41AQI (US)
16th April 2026
28AQI (US)
28AQI (US)
17th April 2026
37AQI (US)
37AQI (US)
18th April 2026
33AQI (US)
33AQI (US)
19th April 2026
38AQI (US)
38AQI (US)
20th April 2026
38AQI (US)
38AQI (US)
21st April 2026
40AQI (US)
40AQI (US)
22nd April 2026
46AQI (US)
46AQI (US)
23rd April 2026
36AQI (US)
36AQI (US)
24th April 2026
33AQI (US)
33AQI (US)
25th April 2026
46AQI (US)
46AQI (US)
26th April 2026
52AQI (US)
52AQI (US)
27th April 2026
49AQI (US)
49AQI (US)
28th April 2026
42AQI (US)
42AQI (US)
29th April 2026
40AQI (US)
40AQI (US)
30th April 2026
39AQI (US)
39AQI (US)
1st May 2026
48AQI (US)
48AQI (US)
2nd May 2026
50AQI (US)
50AQI (US)
3rd May 2026
50AQI (US)
50AQI (US)
4th May 2026
29AQI (US)
29AQI (US)
5th May 2026
23AQI (US)
23AQI (US)
6th May 2026
30AQI (US)
30AQI (US)
7th May 2026
32AQI (US)
32AQI (US)
8th May 2026
26AQI (US)
26AQI (US)
9th May 2026
26AQI (US)
26AQI (US)
10th May 2026
29AQI (US)
29AQI (US)
11th May 2026
30AQI (US)
30AQI (US)
12th May 2026
36AQI (US)
36AQI (US)
13th May 2026
46AQI (US)
46AQI (US)
14th May 2026
32AQI (US)
32AQI (US)
15th May 2026
36AQI (US)
36AQI (US)
16th May 2026
85AQI (US)
85AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
53AQI (US)
53AQI (US)
19th May 2026
49AQI (US)
49AQI (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
54AQI (US)
54AQI (US)
24th May 2026
58AQI (US)
58AQI (US)
25th May 2026
46AQI (US)
46AQI (US)
26th May 2026
39AQI (US)
39AQI (US)
27th May 2026
24AQI (US)
24AQI (US)
28th May 2026
24AQI (US)
24AQI (US)
29th May 2026
27AQI (US)
27AQI (US)
30th May 2026
25AQI (US)
25AQI (US)
31st May 2026
32AQI (US)
32AQI (US)
1st June 2026
33AQI (US)
33AQI (US)
2nd June 2026
30AQI (US)
30AQI (US)
3rd June 2026
26AQI (US)
26AQI (US)
4th June 2026
23AQI (US)
23AQI (US)
5th June 2026
22AQI (US)
22AQI (US)
6th June 2026
22AQI (US)
22AQI (US)
7th June 2026
22AQI (US)
22AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
23AQI (US)
23AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
24AQI (US)
24AQI (US)
12th June 2026
24AQI (US)
24AQI (US)
13th June 2026
34AQI (US)
34AQI (US)
14th June 2026
35AQI (US)
35AQI (US)
15th June 2026
17AQI (US)
17AQI (US)
16th June 2026
25AQI (US)
25AQI (US)
17th June 2026
24AQI (US)
24AQI (US)
18th June 2026
25AQI (US)
25AQI (US)
19th June 2026
29AQI (US)
29AQI (US)
20th June 2026
23AQI (US)
23AQI (US)
21st June 2026
19AQI (US)
19AQI (US)
22nd June 2026
19AQI (US)
19AQI (US)
23rd June 2026
22AQI (US)
22AQI (US)
24th June 2026
22AQI (US)
22AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
29AQI (US)
29AQI (US)
27th June 2026
27AQI (US)
27AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
27AQI (US)
27AQI (US)
30th June 2026
26AQI (US)
26AQI (US)
1st July 2026
28AQI (US)
28AQI (US)
2nd July 2026
22AQI (US)
22AQI (US)
3rd July 2026
16AQI (US)
16AQI (US)
4th July 2026
36AQI (US)
36AQI (US)
5th July 2026
19AQI (US)
19AQI (US)
6th July 2026
27AQI (US)
27AQI (US)
7th July 2026
26AQI (US)
26AQI (US)
8th July 2026
25AQI (US)
25AQI (US)
9th July 2026
23AQI (US)
23AQI (US)
10th July 2026
23AQI (US)
23AQI (US)
11th July 2026
27AQI (US)
27AQI (US)
12th July 2026
28AQI (US)
28AQI (US)
13th July 2026
30AQI (US)
30AQI (US)
14th July 2026
32AQI (US)
32AQI (US)
15th July 2026
30AQI (US)
30AQI (US)
16th July 2026
54AQI (US)
54AQI (US)
17th July 2026
45AQI (US)
45AQI (US)
18th July 2026
28AQI (US)
28AQI (US)
19th July 2026
27AQI (US)
27AQI (US)
20th July 2026
36AQI (US)
36AQI (US)
21st July 2026
48AQI (US)
48AQI (US)
22nd July 2026
60AQI (US)
60AQI (US)
23rd July 2026
56AQI (US)
56AQI (US)
24th July 2026
42AQI (US)
42AQI (US)
25th July 2026
36AQI (US)
36AQI (US)
26th July 2026
26AQI (US)
26AQI (US)
27th July 2026
25AQI (US)
25AQI (US)
28th July 2026
32AQI (US)
32AQI (US)
29th July 2026
37AQI (US)
37AQI (US)
30th July 2026
36AQI (US)
36AQI (US)
31st July 2026
50AQI (US)
50AQI (US)
1st August 2026
58AQI (US)
58AQI (US)
2nd August 2026
46AQI (US)
46AQI (US)
3rd August 2026
17AQI (US)
17AQI (US)
4th August 2026
33AQI (US)
33AQI (US)
5th August 2026
28AQI (US)
28AQI (US)
6th August 2026
23AQI (US)
23AQI (US)
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)
50AQI (US)
38AQI (US)
42AQI (US)
25AQI (US)
33AQI (US)
34AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202637AQI (US)
30
1
25
3
13
18
29
1
23
8
30
28
3
5
1
183
35
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202540AQI (US)
31
27
1
24
7
29
1
29
2
29
1
23
8
24
7
29
1
13
18
18
12
15
16
291
74
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
June31AQI (US)
202438AQI (US)
30
1
28
1
24
7
20
10
27
4
26
4
18
13
30
1
28
2
29
2
27
3
31
318
48
Highest AQI (US) recorded in
April48AQI (US)
Lowest AQI (US) recorded in
December32AQI (US)
202340AQI (US)
25
6
20
8
23
8
20
10
25
6
21
9
21
10
31
29
1
31
21
8
23
8
290
74
Highest AQI (US) recorded in
April49AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202238AQI (US)
29
1
17
4
28
3
22
8
22
9
18
12
20
4
1
28
30
1
24
6
31
270
48
Highest AQI (US) recorded in
June47AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
202136AQI (US)
26
5
23
5
27
3
1
29
1
26
5
27
3
30
1
25
6
30
29
2
26
4
27
4
325
39
1
Highest AQI (US) recorded in
May40AQI (US)
Lowest AQI (US) recorded in
July33AQI (US)
202032AQI (US)
13
20
1
18
27
3
31
24
7
19
30
1
24
6
24
7
230
25
Highest AQI (US) recorded in
August39AQI (US)
Lowest AQI (US) recorded in
September23AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
40AQI (US)Least Polluted Year Recorded
2020(Avg.)
32AQI (US)Niiza's annual 2026 AQI (US) (37) shows an average percentage change of -0.3% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (36), 2022 (38), 2023 (40), 2024 (38), 2025 (40).
