Downtown Seattle, Seattle, Washington, United States 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
Downtown Seattle, Seattle, Washington, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
48AQILowest AQI recorded on
2nd Aug 2025
33AQISame Day Analysis (4th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Downtown Seattle, Seattle, Washington, United States
AQI
Day
Night
.
5 AM3rd Aug 2025
8 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
6PM3rd Aug
39AQI
Avg. Lowest Time
1PM3rd Aug
23AQI
Night time
Avg. Highest Time
3AM4th Aug
53AQI
Avg. Lowest Time
9PM3rd Aug
34AQI
In the last 24 hours,
Downtown Seattle's AQI reached its highest point of 53 at 3 AM during the Night, while the lowest point, 23, was recorded at 1 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Downtown Seattle, Seattle, Washington, United States
JulAug
05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025415 AMAQI
5th Jul 2025376 AMAQI
5th Jul 2025447 AMAQI
5th Jul 2025328 AMAQI
5th Jul 2025329 AMAQI
5th Jul 20253210 AMAQI
5th Jul 20253511 AMAQI
5th Jul 20253412 PMAQI
5th Jul 2025351 PMAQI
5th Jul 2025332 PMAQI
5th Jul 2025323 PMAQI
5th Jul 2025334 PMAQI
5th Jul 2025355 PMAQI
5th Jul 2025316 PMAQI
5th Jul 2025307 PMAQI
5th Jul 2025308 PMAQI
5th Jul 2025349 PMAQI
5th Jul 20253010 PMAQI
5th Jul 20253211 PMAQI
6th Jul 20253412 AMAQI
6th Jul 2025281 AMAQI
6th Jul 2025312 AMAQI
6th Jul 2025333 AMAQI
6th Jul 2025294 AMAQI
18°C15/23°C
6th Jul 2025315 AMAQI
6th Jul 2025366 AMAQI
6th Jul 2025327 AMAQI
6th Jul 2025308 AMAQI
6th Jul 2025289 AMAQI
6th Jul 20252810 AMAQI
6th Jul 20252611 AMAQI
6th Jul 20252912 PMAQI
6th Jul 2025331 PMAQI
6th Jul 2025302 PMAQI
6th Jul 2025303 PMAQI
6th Jul 2025294 PMAQI
6th Jul 2025295 PMAQI
6th Jul 2025296 PMAQI
6th Jul 2025307 PMAQI
6th Jul 2025278 PMAQI
6th Jul 2025279 PMAQI
6th Jul 20252810 PMAQI
6th Jul 20252811 PMAQI
7th Jul 20252812 AMAQI
7th Jul 2025271 AMAQI
7th Jul 2025282 AMAQI
7th Jul 2025243 AMAQI
7th Jul 2025214 AMAQI
20°C13/28°C
7th Jul 2025215 AMAQI
7th Jul 2025246 AMAQI
7th Jul 2025237 AMAQI
7th Jul 2025228 AMAQI
7th Jul 2025239 AMAQI
7th Jul 20252810 AMAQI
7th Jul 20253011 AMAQI
7th Jul 20252812 PMAQI
7th Jul 2025281 PMAQI
7th Jul 2025292 PMAQI
7th Jul 2025253 PMAQI
7th Jul 2025244 PMAQI
7th Jul 2025245 PMAQI
7th Jul 2025266 PMAQI
7th Jul 2025267 PMAQI
7th Jul 2025268 PMAQI
7th Jul 2025249 PMAQI
7th Jul 20252410 PMAQI
7th Jul 20252711 PMAQI
8th Jul 20252612 AMAQI
8th Jul 2025241 AMAQI
8th Jul 2025262 AMAQI
8th Jul 2025223 AMAQI
8th Jul 2025224 AMAQI
22°C15/30°C
8th Jul 2025305 AMAQI
8th Jul 2025246 AMAQI
8th Jul 2025227 AMAQI
8th Jul 2025268 AMAQI
8th Jul 2025299 AMAQI
8th Jul 20253210 AMAQI
8th Jul 20253111 AMAQI
8th Jul 20253412 PMAQI
8th Jul 2025331 PMAQI
8th Jul 2025302 PMAQI
8th Jul 2025263 PMAQI
8th Jul 2025264 PMAQI
8th Jul 2025275 PMAQI
8th Jul 2025276 PMAQI
8th Jul 2025307 PMAQI
8th Jul 2025328 PMAQI
8th Jul 2025309 PMAQI
8th Jul 20252810 PMAQI
8th Jul 20252811 PMAQI
9th Jul 20252612 AMAQI
9th Jul 2025211 AMAQI
9th Jul 2025182 AMAQI
9th Jul 2025193 AMAQI
9th Jul 2025164 AMAQI
23°C17/32°C
9th Jul 2025165 AMAQI
9th Jul 2025236 AMAQI
9th Jul 2025247 AMAQI
9th Jul 2025248 AMAQI
9th Jul 2025269 AMAQI
9th Jul 20252310 AMAQI
9th Jul 20252011 AMAQI
9th Jul 20252012 PMAQI
9th Jul 2025241 PMAQI
9th Jul 2025222 PMAQI
9th Jul 2025213 PMAQI
9th Jul 2025234 PMAQI
9th Jul 2025225 PMAQI
9th Jul 2025226 PMAQI
9th Jul 2025237 PMAQI
9th Jul 2025238 PMAQI
9th Jul 2025209 PMAQI
9th Jul 20252110 PMAQI
9th Jul 20252211 PMAQI
10th Jul 20252612 AMAQI
10th Jul 2025281 AMAQI
10th Jul 2025332 AMAQI
10th Jul 2025303 AMAQI
10th Jul 2025284 AMAQI
20°C16/25°C
10th Jul 2025275 AMAQI
10th Jul 2025266 AMAQI
10th Jul 2025267 AMAQI
10th Jul 2025248 AMAQI
10th Jul 2025259 AMAQI
10th Jul 20253210 AMAQI
10th Jul 20253111 AMAQI
10th Jul 20252612 PMAQI
10th Jul 2025281 PMAQI
10th Jul 2025262 PMAQI
10th Jul 2025243 PMAQI
10th Jul 2025264 PMAQI
10th Jul 2025295 PMAQI
10th Jul 2025306 PMAQI
10th Jul 2025287 PMAQI
10th Jul 2025288 PMAQI
10th Jul 2025299 PMAQI
10th Jul 20252610 PMAQI
10th Jul 20252611 PMAQI
11th Jul 20252512 AMAQI
11th Jul 2025271 AMAQI
11th Jul 2025282 AMAQI
11th Jul 2025253 AMAQI
11th Jul 2025284 AMAQI
18°C14/25°C
11th Jul 2025265 AMAQI
11th Jul 2025346 AMAQI
11th Jul 2025307 AMAQI
11th Jul 2025298 AMAQI
11th Jul 2025259 AMAQI
11th Jul 20253010 AMAQI
11th Jul 20253511 AMAQI
11th Jul 20253412 PMAQI
11th Jul 2025321 PMAQI
11th Jul 2025332 PMAQI
11th Jul 2025303 PMAQI
11th Jul 2025294 PMAQI
11th Jul 2025305 PMAQI
11th Jul 2025296 PMAQI
11th Jul 2025317 PMAQI
11th Jul 2025318 PMAQI
11th Jul 2025299 PMAQI
11th Jul 20253110 PMAQI
11th Jul 20252811 PMAQI
12th Jul 20252712 AMAQI
12th Jul 2025291 AMAQI
12th Jul 2025252 AMAQI
12th Jul 2025223 AMAQI
12th Jul 2025184 AMAQI
21°C14/30°C
12th Jul 2025165 AMAQI
12th Jul 2025176 AMAQI
12th Jul 2025227 AMAQI
12th Jul 2025288 AMAQI
12th Jul 2025209 AMAQI
12th Jul 20251810 AMAQI
12th Jul 20251711 AMAQI
12th Jul 20252012 PMAQI
12th Jul 2025201 PMAQI
12th Jul 2025222 PMAQI
12th Jul 2025253 PMAQI
12th Jul 2025254 PMAQI
12th Jul 2025225 PMAQI
12th Jul 2025226 PMAQI
12th Jul 2025227 PMAQI
12th Jul 2025258 PMAQI
12th Jul 2025259 PMAQI
12th Jul 20252710 PMAQI
12th Jul 20252511 PMAQI
13th Jul 20252512 AMAQI
13th Jul 2025261 AMAQI
13th Jul 2025322 AMAQI
13th Jul 2025313 AMAQI
13th Jul 2025284 AMAQI
22°C17/30°C
13th Jul 2025285 AMAQI
13th Jul 2025326 AMAQI
13th Jul 2025347 AMAQI
13th Jul 2025348 AMAQI
13th Jul 2025329 AMAQI
13th Jul 20253410 AMAQI
13th Jul 20253811 AMAQI
13th Jul 20253312 PMAQI
13th Jul 2025351 PMAQI
13th Jul 2025322 PMAQI
13th Jul 2025303 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025295 PMAQI
13th Jul 2025316 PMAQI
13th Jul 2025347 PMAQI
13th Jul 2025338 PMAQI
13th Jul 2025329 PMAQI
13th Jul 20253110 PMAQI
13th Jul 20253011 PMAQI
14th Jul 20252912 AMAQI
14th Jul 2025221 AMAQI
14th Jul 2025222 AMAQI
14th Jul 2025283 AMAQI
14th Jul 2025244 AMAQI
24°C18/33°C
14th Jul 2025225 AMAQI
14th Jul 2025226 AMAQI
14th Jul 2025177 AMAQI
14th Jul 2025218 AMAQI
14th Jul 2025299 AMAQI
14th Jul 20252810 AMAQI
14th Jul 20252811 AMAQI
14th Jul 20253012 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025273 PMAQI
14th Jul 2025284 PMAQI
14th Jul 2025295 PMAQI
14th Jul 2025286 PMAQI
14th Jul 2025277 PMAQI
14th Jul 2025288 PMAQI
14th Jul 2025319 PMAQI
14th Jul 20253210 PMAQI
14th Jul 20252911 PMAQI
15th Jul 20252812 AMAQI
15th Jul 2025261 AMAQI
15th Jul 2025262 AMAQI
15th Jul 2025253 AMAQI
15th Jul 2025284 AMAQI
19°C17/23°C
15th Jul 2025325 AMAQI
15th Jul 2025346 AMAQI
15th Jul 2025317 AMAQI
15th Jul 2025368 AMAQI
15th Jul 2025359 AMAQI
15th Jul 20253710 AMAQI
15th Jul 20253611 AMAQI
15th Jul 20253812 PMAQI
15th Jul 2025361 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025323 PMAQI
15th Jul 2025314 PMAQI
15th Jul 2025335 PMAQI
15th Jul 2025306 PMAQI
15th Jul 2025337 PMAQI
15th Jul 2025338 PMAQI
15th Jul 2025349 PMAQI
15th Jul 20253210 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253612 AMAQI
16th Jul 2025391 AMAQI
16th Jul 2025362 AMAQI
16th Jul 2025413 AMAQI
16th Jul 2025404 AMAQI
23°C15/31°C
16th Jul 2025435 AMAQI
16th Jul 2025446 AMAQI
16th Jul 2025487 AMAQI
16th Jul 2025478 AMAQI
16th Jul 2025509 AMAQI
16th Jul 20254510 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254012 PMAQI
16th Jul 2025461 PMAQI
16th Jul 2025472 PMAQI
16th Jul 2025423 PMAQI
16th Jul 2025434 PMAQI
16th Jul 2025445 PMAQI
16th Jul 2025406 PMAQI
16th Jul 2025427 PMAQI
16th Jul 2025448 PMAQI
16th Jul 2025459 PMAQI
16th Jul 20254310 PMAQI
16th Jul 20254411 PMAQI
17th Jul 20254212 AMAQI
17th Jul 2025411 AMAQI
17th Jul 2025462 AMAQI
17th Jul 2025463 AMAQI
17th Jul 2025524 AMAQI
27°C20/35°C
17th Jul 2025495 AMAQI
17th Jul 2025466 AMAQI
17th Jul 2025477 AMAQI
17th Jul 2025488 AMAQI
17th Jul 2025499 AMAQI
17th Jul 20255410 AMAQI
17th Jul 20255111 AMAQI
17th Jul 20255212 PMAQI
17th Jul 2025521 PMAQI
17th Jul 2025502 PMAQI
17th Jul 2025503 PMAQI
17th Jul 2025504 PMAQI
17th Jul 2025505 PMAQI
17th Jul 2025486 PMAQI
17th Jul 2025467 PMAQI
17th Jul 2025488 PMAQI
17th Jul 2025509 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254411 PMAQI
18th Jul 20254612 AMAQI
18th Jul 2025441 AMAQI
18th Jul 2025422 AMAQI
18th Jul 2025533 AMAQI
18th Jul 2025514 AMAQI
23°C17/31°C
18th Jul 2025505 AMAQI
18th Jul 2025466 AMAQI
18th Jul 2025487 AMAQI
18th Jul 2025468 AMAQI
18th Jul 2025509 AMAQI
18th Jul 20255010 AMAQI
18th Jul 20255011 AMAQI
18th Jul 20254512 PMAQI
18th Jul 2025411 PMAQI
18th Jul 2025402 PMAQI
18th Jul 2025443 PMAQI
18th Jul 2025424 PMAQI
18th Jul 2025405 PMAQI
18th Jul 2025426 PMAQI
18th Jul 2025457 PMAQI
18th Jul 2025458 PMAQI
18th Jul 2025389 PMAQI
18th Jul 20253810 PMAQI
18th Jul 20253711 PMAQI
19th Jul 20253612 AMAQI
19th Jul 2025361 AMAQI
19th Jul 2025412 AMAQI
19th Jul 2025453 AMAQI
19th Jul 2025374 AMAQI
18°C16/20°C
19th Jul 2025325 AMAQI
19th Jul 2025276 AMAQI
19th Jul 2025337 AMAQI
19th Jul 2025308 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20253710 AMAQI
19th Jul 20254011 AMAQI
19th Jul 20253812 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025312 PMAQI
19th Jul 2025343 PMAQI
19th Jul 2025344 PMAQI
19th Jul 2025315 PMAQI
19th Jul 2025316 PMAQI
19th Jul 2025347 PMAQI
19th Jul 2025368 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20254111 PMAQI
20th Jul 20254012 AMAQI
20th Jul 2025401 AMAQI
20th Jul 2025352 AMAQI
20th Jul 2025423 AMAQI
20th Jul 2025384 AMAQI
17°C14/20°C
20th Jul 2025375 AMAQI
20th Jul 2025266 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025288 AMAQI
20th Jul 2025319 AMAQI
20th Jul 20253110 AMAQI
20th Jul 20253311 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025291 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025383 PMAQI
20th Jul 2025384 PMAQI
20th Jul 2025335 PMAQI
20th Jul 2025366 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253310 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20254012 AMAQI
21st Jul 2025381 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025373 AMAQI
21st Jul 2025374 AMAQI
18°C14/22°C
21st Jul 2025375 AMAQI
21st Jul 2025366 AMAQI
21st Jul 2025327 AMAQI
21st Jul 2025338 AMAQI
21st Jul 2025389 AMAQI
21st Jul 20253910 AMAQI
21st Jul 20253611 AMAQI
21st Jul 20254312 PMAQI
21st Jul 2025431 PMAQI
21st Jul 2025412 PMAQI
21st Jul 2025443 PMAQI
21st Jul 2025414 PMAQI
21st Jul 2025405 PMAQI
21st Jul 2025406 PMAQI
21st Jul 2025397 PMAQI
21st Jul 2025408 PMAQI
21st Jul 2025419 PMAQI
21st Jul 20254010 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025411 AMAQI
22nd Jul 2025362 AMAQI
22nd Jul 2025403 AMAQI
22nd Jul 2025314 AMAQI
19°C14/26°C
22nd Jul 2025355 AMAQI
22nd Jul 2025346 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025358 AMAQI
22nd Jul 2025389 AMAQI
22nd Jul 20253710 AMAQI
22nd Jul 20253511 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025341 PMAQI
22nd Jul 2025322 PMAQI
22nd Jul 2025353 PMAQI
22nd Jul 2025354 PMAQI
22nd Jul 2025345 PMAQI
22nd Jul 2025316 PMAQI
22nd Jul 2025347 PMAQI
22nd Jul 2025358 PMAQI
22nd Jul 2025349 PMAQI
22nd Jul 20253810 PMAQI
22nd Jul 20253811 PMAQI
23rd Jul 20253512 AMAQI
23rd Jul 2025321 AMAQI
23rd Jul 2025362 AMAQI
23rd Jul 2025363 AMAQI
23rd Jul 2025324 AMAQI
19°C15/23°C
23rd Jul 2025255 AMAQI
23rd Jul 2025286 AMAQI
23rd Jul 2025297 AMAQI
23rd Jul 2025358 AMAQI
23rd Jul 2025389 AMAQI
23rd Jul 20253410 AMAQI
23rd Jul 20253511 AMAQI
23rd Jul 20253612 PMAQI
23rd Jul 2025381 PMAQI
23rd Jul 2025342 PMAQI
23rd Jul 2025363 PMAQI
23rd Jul 2025324 PMAQI
23rd Jul 2025355 PMAQI
23rd Jul 2025356 PMAQI
23rd Jul 2025357 PMAQI
23rd Jul 2025368 PMAQI
23rd Jul 2025389 PMAQI
23rd Jul 20253910 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253312 AMAQI
24th Jul 2025351 AMAQI
24th Jul 2025402 AMAQI
24th Jul 2025453 AMAQI
24th Jul 2025444 AMAQI
23°C17/31°C
24th Jul 2025335 AMAQI
24th Jul 2025346 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025378 AMAQI
24th Jul 2025339 AMAQI
24th Jul 20253410 AMAQI
24th Jul 20253911 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025311 PMAQI
24th Jul 2025322 PMAQI
24th Jul 2025313 PMAQI
24th Jul 2025314 PMAQI
24th Jul 2025325 PMAQI
24th Jul 2025346 PMAQI
24th Jul 2025387 PMAQI
24th Jul 2025368 PMAQI
24th Jul 2025319 PMAQI
24th Jul 20252810 PMAQI
24th Jul 20253211 PMAQI
25th Jul 20253412 AMAQI
25th Jul 2025311 AMAQI
25th Jul 2025312 AMAQI
25th Jul 2025333 AMAQI
25th Jul 2025304 AMAQI
19°C16/23°C
25th Jul 2025295 AMAQI
25th Jul 2025256 AMAQI
25th Jul 2025257 AMAQI
25th Jul 2025258 AMAQI
25th Jul 2025289 AMAQI
25th Jul 20253010 AMAQI
25th Jul 20252611 AMAQI
25th Jul 20252712 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025282 PMAQI
25th Jul 2025263 PMAQI
25th Jul 2025264 PMAQI
25th Jul 2025265 PMAQI
25th Jul 2025316 PMAQI
25th Jul 2025297 PMAQI
25th Jul 2025318 PMAQI
25th Jul 2025349 PMAQI
25th Jul 20253610 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20253512 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025422 AMAQI
26th Jul 2025383 AMAQI
26th Jul 2025324 AMAQI
16°C14/18°C
26th Jul 2025385 AMAQI
26th Jul 2025326 AMAQI
26th Jul 2025307 AMAQI
26th Jul 2025288 AMAQI
26th Jul 2025319 AMAQI
26th Jul 20253410 AMAQI
26th Jul 20253311 AMAQI
26th Jul 20253712 PMAQI
26th Jul 2025371 PMAQI
26th Jul 2025352 PMAQI
26th Jul 2025323 PMAQI
26th Jul 2025334 PMAQI
26th Jul 2025375 PMAQI
26th Jul 2025366 PMAQI
26th Jul 2025377 PMAQI
26th Jul 2025358 PMAQI
26th Jul 2025349 PMAQI
26th Jul 20253510 PMAQI
26th Jul 20253511 PMAQI
27th Jul 20253812 AMAQI
27th Jul 2025351 AMAQI
27th Jul 2025322 AMAQI
27th Jul 2025403 AMAQI
27th Jul 2025424 AMAQI
18°C14/25°C
27th Jul 2025385 AMAQI
27th Jul 2025426 AMAQI
27th Jul 2025417 AMAQI
27th Jul 2025388 AMAQI
27th Jul 2025409 AMAQI
27th Jul 20253410 AMAQI
27th Jul 20253411 AMAQI
27th Jul 20252812 PMAQI
27th Jul 2025351 PMAQI
27th Jul 2025302 PMAQI
27th Jul 2025353 PMAQI
27th Jul 2025364 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025326 PMAQI
27th Jul 2025367 PMAQI
27th Jul 2025368 PMAQI
27th Jul 2025329 PMAQI
27th Jul 20253410 PMAQI
27th Jul 20253811 PMAQI
28th Jul 20253712 AMAQI
28th Jul 2025361 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025313 AMAQI
28th Jul 2025344 AMAQI
20°C15/27°C
28th Jul 2025385 AMAQI
28th Jul 2025306 AMAQI
28th Jul 2025367 AMAQI
28th Jul 2025468 AMAQI
28th Jul 2025369 AMAQI
28th Jul 20253910 AMAQI
28th Jul 20254011 AMAQI
28th Jul 20253912 PMAQI
28th Jul 2025421 PMAQI
28th Jul 2025382 PMAQI
28th Jul 2025343 PMAQI
28th Jul 2025334 PMAQI
28th Jul 2025315 PMAQI
28th Jul 2025336 PMAQI
28th Jul 2025367 PMAQI
28th Jul 2025368 PMAQI
28th Jul 2025379 PMAQI
28th Jul 20254010 PMAQI
28th Jul 20253811 PMAQI
29th Jul 20253612 AMAQI
29th Jul 2025371 AMAQI
29th Jul 2025402 AMAQI
29th Jul 2025313 AMAQI
29th Jul 2025304 AMAQI
21°C14/29°C
29th Jul 2025285 AMAQI
29th Jul 2025236 AMAQI
29th Jul 2025307 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025339 AMAQI
29th Jul 20252710 AMAQI
29th Jul 20252311 AMAQI
29th Jul 20253712 PMAQI
29th Jul 2025311 PMAQI
29th Jul 2025412 PMAQI
29th Jul 2025363 PMAQI
29th Jul 2025364 PMAQI
29th Jul 2025375 PMAQI
29th Jul 2025366 PMAQI
29th Jul 2025377 PMAQI
29th Jul 2025388 PMAQI
29th Jul 2025379 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253611 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025421 AMAQI
30th Jul 2025372 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025384 AMAQI
22°C15/31°C
30th Jul 2025395 AMAQI
30th Jul 2025336 AMAQI
30th Jul 2025347 AMAQI
30th Jul 2025338 AMAQI
30th Jul 2025329 AMAQI
30th Jul 20253310 AMAQI
30th Jul 20254011 AMAQI
30th Jul 20254312 PMAQI
30th Jul 2025401 PMAQI
30th Jul 2025402 PMAQI
30th Jul 2025403 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025405 PMAQI
30th Jul 2025406 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025408 PMAQI
30th Jul 2025389 PMAQI
30th Jul 20253810 PMAQI
30th Jul 20254011 PMAQI
31st Jul 20253812 AMAQI
31st Jul 2025361 AMAQI
31st Jul 2025362 AMAQI
31st Jul 2025353 AMAQI
31st Jul 2025324 AMAQI
23°C16/32°C
31st Jul 2025345 AMAQI
31st Jul 2025346 AMAQI
31st Jul 2025407 AMAQI
31st Jul 2025388 AMAQI
31st Jul 2025379 AMAQI
31st Jul 20253810 AMAQI
31st Jul 20253611 AMAQI
31st Jul 20253612 PMAQI
31st Jul 2025381 PMAQI
31st Jul 2025362 PMAQI
31st Jul 2025393 PMAQI
31st Jul 2025404 PMAQI
31st Jul 2025425 PMAQI
31st Jul 2025456 PMAQI
31st Jul 2025307 PMAQI
31st Jul 2025388 PMAQI
31st Jul 2025529 PMAQI
31st Jul 20255410 PMAQI
31st Jul 20255011 PMAQI
1st Aug 20254412 AMAQI
1st Aug 2025341 AMAQI
1st Aug 2025332 AMAQI
1st Aug 2025323 AMAQI
1st Aug 2025344 AMAQI
23°C18/31°C
1st Aug 2025285 AMAQI
1st Aug 2025236 AMAQI
1st Aug 2025257 AMAQI
1st Aug 2025218 AMAQI
1st Aug 2025249 AMAQI
1st Aug 20252810 AMAQI
1st Aug 20253511 AMAQI
1st Aug 20253512 PMAQI
1st Aug 2025341 PMAQI
1st Aug 2025312 PMAQI
1st Aug 2025333 PMAQI
1st Aug 2025324 PMAQI
1st Aug 2025275 PMAQI
1st Aug 2025376 PMAQI
1st Aug 2025357 PMAQI
1st Aug 2025368 PMAQI
1st Aug 2025429 PMAQI
1st Aug 20254810 PMAQI
1st Aug 20253511 PMAQI
2nd Aug 20253012 AMAQI
2nd Aug 2025271 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025473 AMAQI
2nd Aug 2025444 AMAQI
22°C17/27°C
2nd Aug 2025375 AMAQI
2nd Aug 2025336 AMAQI
2nd Aug 2025327 AMAQI
2nd Aug 2025268 AMAQI
2nd Aug 2025309 AMAQI
2nd Aug 20253410 AMAQI
2nd Aug 20252711 AMAQI
2nd Aug 20251812 PMAQI
2nd Aug 2025171 PMAQI
2nd Aug 2025202 PMAQI
2nd Aug 2025253 PMAQI
2nd Aug 2025284 PMAQI
2nd Aug 2025315 PMAQI
2nd Aug 2025326 PMAQI
2nd Aug 2025357 PMAQI
2nd Aug 2025328 PMAQI
2nd Aug 2025379 PMAQI
2nd Aug 20254310 PMAQI
2nd Aug 20255011 PMAQI
3rd Aug 20254312 AMAQI
3rd Aug 2025371 AMAQI
3rd Aug 2025332 AMAQI
3rd Aug 2025333 AMAQI
3rd Aug 2025334 AMAQI
19°C16/21°C
3rd Aug 2025305 AMAQI
3rd Aug 2025306 AMAQI
3rd Aug 2025317 AMAQI
3rd Aug 2025308 AMAQI
3rd Aug 2025339 AMAQI
3rd Aug 20253410 AMAQI
3rd Aug 20253611 AMAQI
3rd Aug 20252612 PMAQI
3rd Aug 2025231 PMAQI
3rd Aug 2025262 PMAQI
3rd Aug 2025303 PMAQI
3rd Aug 2025294 PMAQI
3rd Aug 2025335 PMAQI
3rd Aug 2025396 PMAQI
3rd Aug 2025327 PMAQI
3rd Aug 2025338 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20253610 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20254212 AMAQI
4th Aug 2025491 AMAQI
4th Aug 2025492 AMAQI
4th Aug 2025533 AMAQI
4th Aug 2025534 AMAQI
18°C16/20°C
4th Aug 2025465 AMAQI
5 AM4th Aug 2025476 AMAQI
4th Aug 2025487 AMAQI
4th Aug 2025498 AMAQI
4th Aug 2025489 AMAQI
4th Aug 20255210 AMAQI
4th Aug 20254411 AMAQI
4th Aug 20254512 PMAQI
12 PM4th Aug 2025541 PMAQI
4th Aug 2025562 PMAQI
4th Aug 2025563 PMAQI
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
33AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
33AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 33), while the lowest AQI was between 5 AM to 8 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 11 PM
34AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
34AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 34), while the lowest AQI was between 12 AM to 11 PM (Avg. 34).
2025 Days Vs Air Quality
Downtown Seattle, Seattle, Washington, United States
2025
100%
132
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
132 DaysModerate
0 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 216 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
Downtown Seattle, Seattle, Washington, United States
AQI levels in 2025
AQI
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.
1st March 2025
33AQI
33AQI
2nd March 2025
21AQI
21AQI
3rd March 2025
19AQI
19AQI
4th March 2025
23AQI
23AQI
5th March 2025
22AQI
22AQI
6th March 2025
22AQI
22AQI
1st April 2025
24AQI
24AQI
2nd April 2025
25AQI
25AQI
3rd April 2025
35AQI
35AQI
4th April 2025
35AQI
35AQI
5th April 2025
36AQI
36AQI
6th April 2025
32AQI
32AQI
7th April 2025
21AQI
21AQI
8th April 2025
16AQI
16AQI
9th April 2025
20AQI
20AQI
10th April 2025
27AQI
27AQI
11th April 2025
25AQI
25AQI
12th April 2025
24AQI
24AQI
13th April 2025
24AQI
24AQI
14th April 2025
25AQI
25AQI
15th April 2025
25AQI
25AQI
16th April 2025
23AQI
23AQI
17th April 2025
26AQI
26AQI
18th April 2025
30AQI
30AQI
19th April 2025
30AQI
30AQI
20th April 2025
24AQI
24AQI
21st April 2025
20AQI
20AQI
22nd April 2025
22AQI
22AQI
23rd April 2025
26AQI
26AQI
24th April 2025
33AQI
33AQI
25th April 2025
43AQI
43AQI
26th April 2025
48AQI
48AQI
27th April 2025
37AQI
37AQI
28th April 2025
27AQI
27AQI
29th April 2025
23AQI
23AQI
30th April 2025
20AQI
20AQI
1st May 2025
35AQI
35AQI
2nd May 2025
38AQI
38AQI
3rd May 2025
18AQI
18AQI
4th May 2025
21AQI
21AQI
5th May 2025
21AQI
21AQI
6th May 2025
29AQI
29AQI
7th May 2025
30AQI
30AQI
8th May 2025
22AQI
22AQI
9th May 2025
25AQI
25AQI
10th May 2025
28AQI
28AQI
11th May 2025
20AQI
20AQI
12th May 2025
21AQI
21AQI
13th May 2025
29AQI
29AQI
14th May 2025
29AQI
29AQI
15th May 2025
26AQI
26AQI
16th May 2025
22AQI
22AQI
17th May 2025
23AQI
23AQI
18th May 2025
16AQI
16AQI
19th May 2025
22AQI
22AQI
20th May 2025
16AQI
16AQI
21st May 2025
19AQI
19AQI
22nd May 2025
24AQI
24AQI
23rd May 2025
21AQI
21AQI
24th May 2025
23AQI
23AQI
25th May 2025
22AQI
22AQI
26th May 2025
19AQI
19AQI
27th May 2025
24AQI
24AQI
28th May 2025
27AQI
27AQI
29th May 2025
20AQI
20AQI
30th May 2025
21AQI
21AQI
31st May 2025
21AQI
21AQI
1st June 2025
21AQI
21AQI
2nd June 2025
21AQI
21AQI
3rd June 2025
22AQI
22AQI
4th June 2025
22AQI
22AQI
5th June 2025
32AQI
32AQI
6th June 2025
32AQI
32AQI
7th June 2025
37AQI
37AQI
8th June 2025
40AQI
40AQI
9th June 2025
38AQI
38AQI
10th June 2025
45AQI
45AQI
11th June 2025
49AQI
49AQI
12th June 2025
46AQI
46AQI
13th June 2025
37AQI
37AQI
14th June 2025
31AQI
31AQI
15th June 2025
31AQI
31AQI
16th June 2025
33AQI
33AQI
17th June 2025
26AQI
26AQI
18th June 2025
25AQI
25AQI
19th June 2025
25AQI
25AQI
20th June 2025
24AQI
24AQI
21st June 2025
27AQI
27AQI
22nd June 2025
28AQI
28AQI
23rd June 2025
29AQI
29AQI
24th June 2025
39AQI
39AQI
25th June 2025
33AQI
33AQI
26th June 2025
27AQI
27AQI
27th June 2025
25AQI
25AQI
28th June 2025
31AQI
31AQI
29th June 2025
29AQI
29AQI
30th June 2025
29AQI
29AQI
1st July 2025
28AQI
28AQI
2nd July 2025
24AQI
24AQI
3rd July 2025
22AQI
22AQI
4th July 2025
25AQI
25AQI
5th July 2025
33AQI
33AQI
6th July 2025
30AQI
30AQI
7th July 2025
26AQI
26AQI
8th July 2025
28AQI
28AQI
9th July 2025
21AQI
21AQI
10th July 2025
28AQI
28AQI
11th July 2025
29AQI
29AQI
12th July 2025
22AQI
22AQI
13th July 2025
31AQI
31AQI
14th July 2025
27AQI
27AQI
15th July 2025
32AQI
32AQI
16th July 2025
42AQI
42AQI
17th July 2025
48AQI
48AQI
18th July 2025
45AQI
45AQI
19th July 2025
35AQI
35AQI
20th July 2025
34AQI
34AQI
21st July 2025
39AQI
39AQI
22nd July 2025
35AQI
35AQI
23rd July 2025
34AQI
34AQI
24th July 2025
35AQI
35AQI
25th July 2025
30AQI
30AQI
26th July 2025
35AQI
35AQI
27th July 2025
36AQI
36AQI
28th July 2025
36AQI
36AQI
29th July 2025
34AQI
34AQI
30th July 2025
38AQI
38AQI
31st July 2025
39AQI
39AQI
1st August 2025
34AQI
34AQI
2nd August 2025
33AQI
33AQI
3rd August 2025
33AQI
33AQI
4th August 2025
48AQI
48AQI
23AQI
28AQI
24AQI
31AQI
32AQI
37AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
6
30
31
30
31
4
132
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
March23AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
29AQILeast Polluted Year Recorded
2025(Avg.)
29AQIDowntown Seattle's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
