Westport, Connecticut, 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
Westport, Connecticut, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
91AQILowest AQI recorded on
2nd Aug 2025
46AQISame Day Analysis (5th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 91 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Westport, Connecticut, United States
AQI
Day
Night
.
5 AM5th Aug 2025
8 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
2PM5th Aug
107AQI
Avg. Lowest Time
8PM5th Aug
85AQI
Night time
Avg. Highest Time
12AM6th Aug
78AQI
Avg. Lowest Time
3AM6th Aug
70AQI
In the last 24 hours,
Westport's AQI reached its highest point of 107 at 2 PM during the Day, while the lowest point, 70, was recorded at 3 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Westport, Connecticut, United States
JulAug
07th - 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 - 05th05th - 06th06th
Day
Night
7th Jul 2025325 AMAQI
7th Jul 2025336 AMAQI
7th Jul 2025347 AMAQI
7th Jul 2025368 AMAQI
7th Jul 2025369 AMAQI
7th Jul 20253610 AMAQI
7th Jul 20254311 AMAQI
7th Jul 20254512 PMAQI
7th Jul 2025441 PMAQI
7th Jul 2025472 PMAQI
7th Jul 2025443 PMAQI
7th Jul 2025424 PMAQI
7th Jul 2025425 PMAQI
7th Jul 2025426 PMAQI
7th Jul 2025407 PMAQI
7th Jul 2025408 PMAQI
7th Jul 2025429 PMAQI
7th Jul 20254010 PMAQI
7th Jul 20254211 PMAQI
8th Jul 20254212 AMAQI
8th Jul 2025381 AMAQI
8th Jul 2025342 AMAQI
8th Jul 2025403 AMAQI
8th Jul 2025374 AMAQI
25°C23/32°C
8th Jul 2025385 AMAQI
8th Jul 2025346 AMAQI
8th Jul 2025417 AMAQI
8th Jul 2025398 AMAQI
8th Jul 2025439 AMAQI
8th Jul 20254610 AMAQI
8th Jul 20254811 AMAQI
8th Jul 20255012 PMAQI
8th Jul 2025501 PMAQI
8th Jul 2025452 PMAQI
8th Jul 2025443 PMAQI
8th Jul 2025444 PMAQI
8th Jul 2025425 PMAQI
8th Jul 2025426 PMAQI
8th Jul 2025457 PMAQI
8th Jul 2025448 PMAQI
8th Jul 2025439 PMAQI
8th Jul 20254010 PMAQI
8th Jul 20253711 PMAQI
9th Jul 20253612 AMAQI
9th Jul 2025281 AMAQI
9th Jul 2025282 AMAQI
9th Jul 2025273 AMAQI
9th Jul 2025284 AMAQI
27°C23/33°C
9th Jul 2025315 AMAQI
9th Jul 2025326 AMAQI
9th Jul 2025327 AMAQI
9th Jul 2025328 AMAQI
9th Jul 2025329 AMAQI
9th Jul 20253210 AMAQI
9th Jul 20253311 AMAQI
9th Jul 20253412 PMAQI
9th Jul 2025331 PMAQI
9th Jul 2025342 PMAQI
9th Jul 2025323 PMAQI
9th Jul 2025324 PMAQI
9th Jul 2025315 PMAQI
9th Jul 2025336 PMAQI
9th Jul 2025327 PMAQI
9th Jul 2025348 PMAQI
9th Jul 2025379 PMAQI
9th Jul 20253810 PMAQI
9th Jul 20253811 PMAQI
10th Jul 20253912 AMAQI
10th Jul 2025411 AMAQI
10th Jul 2025432 AMAQI
10th Jul 2025503 AMAQI
10th Jul 2025414 AMAQI
26°C23/30°C
10th Jul 2025415 AMAQI
10th Jul 2025366 AMAQI
10th Jul 2025377 AMAQI
10th Jul 2025388 AMAQI
10th Jul 2025379 AMAQI
10th Jul 20253410 AMAQI
10th Jul 20253011 AMAQI
10th Jul 20253412 PMAQI
10th Jul 2025401 PMAQI
10th Jul 2025402 PMAQI
10th Jul 2025383 PMAQI
10th Jul 2025384 PMAQI
10th Jul 2025375 PMAQI
10th Jul 2025366 PMAQI
10th Jul 2025387 PMAQI
10th Jul 2025378 PMAQI
10th Jul 2025359 PMAQI
10th Jul 20253510 PMAQI
10th Jul 20253611 PMAQI
11th Jul 20253612 AMAQI
11th Jul 2025341 AMAQI
11th Jul 2025302 AMAQI
11th Jul 2025323 AMAQI
11th Jul 2025284 AMAQI
25°C23/28°C
11th Jul 2025275 AMAQI
11th Jul 2025286 AMAQI
11th Jul 2025307 AMAQI
11th Jul 2025328 AMAQI
11th Jul 2025379 AMAQI
11th Jul 20253710 AMAQI
11th Jul 20254211 AMAQI
11th Jul 20253812 PMAQI
11th Jul 2025361 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025393 PMAQI
11th Jul 2025364 PMAQI
11th Jul 2025365 PMAQI
11th Jul 2025366 PMAQI
11th Jul 2025347 PMAQI
11th Jul 2025348 PMAQI
11th Jul 2025349 PMAQI
11th Jul 20253410 PMAQI
11th Jul 20253411 PMAQI
12th Jul 20253312 AMAQI
12th Jul 2025281 AMAQI
12th Jul 2025242 AMAQI
12th Jul 2025233 AMAQI
12th Jul 2025264 AMAQI
23°C21/26°C
12th Jul 2025265 AMAQI
12th Jul 2025286 AMAQI
12th Jul 2025277 AMAQI
12th Jul 2025288 AMAQI
12th Jul 2025279 AMAQI
12th Jul 20252810 AMAQI
12th Jul 20253011 AMAQI
12th Jul 20253012 PMAQI
12th Jul 2025271 PMAQI
12th Jul 2025262 PMAQI
12th Jul 2025283 PMAQI
12th Jul 2025264 PMAQI
12th Jul 2025305 PMAQI
12th Jul 2025276 PMAQI
12th Jul 2025267 PMAQI
12th Jul 2025288 PMAQI
12th Jul 2025269 PMAQI
12th Jul 20252510 PMAQI
12th Jul 20252511 PMAQI
13th Jul 20252512 AMAQI
13th Jul 2025191 AMAQI
13th Jul 2025182 AMAQI
13th Jul 2025203 AMAQI
13th Jul 2025184 AMAQI
23°C21/27°C
13th Jul 2025225 AMAQI
13th Jul 2025186 AMAQI
13th Jul 2025187 AMAQI
13th Jul 2025198 AMAQI
13th Jul 2025209 AMAQI
13th Jul 20251810 AMAQI
13th Jul 20251811 AMAQI
13th Jul 20251912 PMAQI
13th Jul 2025211 PMAQI
13th Jul 2025192 PMAQI
13th Jul 2025203 PMAQI
13th Jul 2025194 PMAQI
13th Jul 2025205 PMAQI
13th Jul 2025206 PMAQI
13th Jul 2025207 PMAQI
13th Jul 2025208 PMAQI
13th Jul 2025219 PMAQI
13th Jul 20252010 PMAQI
13th Jul 20252211 PMAQI
14th Jul 20252112 AMAQI
14th Jul 2025201 AMAQI
14th Jul 2025212 AMAQI
14th Jul 2025203 AMAQI
14th Jul 2025204 AMAQI
23°C21/26°C
14th Jul 2025205 AMAQI
14th Jul 2025216 AMAQI
14th Jul 2025227 AMAQI
14th Jul 2025208 AMAQI
14th Jul 2025219 AMAQI
14th Jul 20252410 AMAQI
14th Jul 20252511 AMAQI
14th Jul 20253012 PMAQI
14th Jul 2025271 PMAQI
14th Jul 2025272 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025264 PMAQI
14th Jul 2025255 PMAQI
14th Jul 2025246 PMAQI
14th Jul 2025257 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025229 PMAQI
14th Jul 20252310 PMAQI
14th Jul 20252511 PMAQI
15th Jul 20252412 AMAQI
15th Jul 2025231 AMAQI
15th Jul 2025182 AMAQI
15th Jul 2025193 AMAQI
15th Jul 2025214 AMAQI
24°C21/26°C
15th Jul 2025215 AMAQI
15th Jul 2025226 AMAQI
15th Jul 2025217 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252511 AMAQI
15th Jul 20252412 PMAQI
15th Jul 2025281 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025284 PMAQI
15th Jul 2025305 PMAQI
15th Jul 2025276 PMAQI
15th Jul 2025287 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025269 PMAQI
15th Jul 20252610 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025301 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025333 AMAQI
16th Jul 2025364 AMAQI
26°C23/31°C
16th Jul 2025365 AMAQI
16th Jul 2025356 AMAQI
16th Jul 2025397 AMAQI
16th Jul 2025408 AMAQI
16th Jul 2025449 AMAQI
16th Jul 20254610 AMAQI
16th Jul 20254711 AMAQI
16th Jul 20254612 PMAQI
16th Jul 2025431 PMAQI
16th Jul 2025442 PMAQI
16th Jul 2025443 PMAQI
16th Jul 2025434 PMAQI
16th Jul 2025425 PMAQI
16th Jul 2025406 PMAQI
16th Jul 2025407 PMAQI
16th Jul 2025408 PMAQI
16th Jul 2025389 PMAQI
16th Jul 20253810 PMAQI
16th Jul 20253911 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025401 AMAQI
17th Jul 2025422 AMAQI
17th Jul 2025423 AMAQI
17th Jul 2025334 AMAQI
26°C23/30°C
17th Jul 2025325 AMAQI
17th Jul 2025326 AMAQI
17th Jul 2025347 AMAQI
17th Jul 2025308 AMAQI
17th Jul 2025329 AMAQI
17th Jul 20252710 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20253212 PMAQI
17th Jul 2025361 PMAQI
17th Jul 2025372 PMAQI
17th Jul 2025363 PMAQI
17th Jul 2025394 PMAQI
17th Jul 2025395 PMAQI
17th Jul 2025406 PMAQI
17th Jul 2025387 PMAQI
17th Jul 2025378 PMAQI
17th Jul 2025409 PMAQI
17th Jul 20253710 PMAQI
17th Jul 20253311 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025172 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025174 AMAQI
28°C24/34°C
18th Jul 2025165 AMAQI
18th Jul 2025176 AMAQI
18th Jul 2025177 AMAQI
18th Jul 2025188 AMAQI
18th Jul 2025159 AMAQI
18th Jul 20251310 AMAQI
18th Jul 20251411 AMAQI
18th Jul 20251412 PMAQI
18th Jul 2025141 PMAQI
18th Jul 2025152 PMAQI
18th Jul 2025173 PMAQI
18th Jul 2025164 PMAQI
18th Jul 2025165 PMAQI
18th Jul 2025176 PMAQI
18th Jul 2025217 PMAQI
18th Jul 2025208 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20252110 PMAQI
18th Jul 20252011 PMAQI
19th Jul 20252012 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025212 AMAQI
19th Jul 2025193 AMAQI
19th Jul 2025234 AMAQI
25°C22/29°C
19th Jul 2025185 AMAQI
19th Jul 2025206 AMAQI
19th Jul 2025207 AMAQI
19th Jul 2025228 AMAQI
19th Jul 2025219 AMAQI
19th Jul 20252410 AMAQI
19th Jul 20252211 AMAQI
19th Jul 20252212 PMAQI
19th Jul 2025211 PMAQI
19th Jul 2025202 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252211 PMAQI
20th Jul 20252012 AMAQI
20th Jul 2025191 AMAQI
20th Jul 2025172 AMAQI
20th Jul 2025173 AMAQI
20th Jul 2025204 AMAQI
23°C17/30°C
20th Jul 2025205 AMAQI
20th Jul 2025226 AMAQI
20th Jul 2025217 AMAQI
20th Jul 2025218 AMAQI
20th Jul 2025189 AMAQI
20th Jul 20251910 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252012 PMAQI
20th Jul 2025191 PMAQI
20th Jul 2025252 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025309 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20253011 PMAQI
21st Jul 20252612 AMAQI
21st Jul 2025221 AMAQI
21st Jul 2025202 AMAQI
21st Jul 2025183 AMAQI
21st Jul 2025174 AMAQI
26°C22/32°C
21st Jul 2025175 AMAQI
21st Jul 2025196 AMAQI
21st Jul 2025217 AMAQI
21st Jul 2025228 AMAQI
21st Jul 2025279 AMAQI
21st Jul 20253310 AMAQI
21st Jul 20254011 AMAQI
21st Jul 20255012 PMAQI
21st Jul 2025521 PMAQI
21st Jul 2025502 PMAQI
21st Jul 2025493 PMAQI
21st Jul 2025494 PMAQI
21st Jul 2025495 PMAQI
21st Jul 2025526 PMAQI
21st Jul 2025357 PMAQI
21st Jul 2025328 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254210 PMAQI
21st Jul 20253911 PMAQI
22nd Jul 20253412 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025233 AMAQI
22nd Jul 2025244 AMAQI
24°C21/30°C
22nd Jul 2025295 AMAQI
22nd Jul 2025246 AMAQI
22nd Jul 2025247 AMAQI
22nd Jul 2025248 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025232 PMAQI
22nd Jul 2025263 PMAQI
22nd Jul 2025254 PMAQI
22nd Jul 2025265 PMAQI
22nd Jul 2025266 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025259 PMAQI
22nd Jul 20252610 PMAQI
22nd Jul 20252411 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025241 AMAQI
23rd Jul 2025242 AMAQI
23rd Jul 2025263 AMAQI
23rd Jul 2025294 AMAQI
22°C18/27°C
23rd Jul 2025285 AMAQI
23rd Jul 2025326 AMAQI
23rd Jul 2025297 AMAQI
23rd Jul 2025308 AMAQI
23rd Jul 2025319 AMAQI
23rd Jul 20252710 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20252912 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025292 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025294 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025296 PMAQI
23rd Jul 2025277 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252610 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025241 AMAQI
24th Jul 2025222 AMAQI
24th Jul 2025233 AMAQI
24th Jul 2025264 AMAQI
23°C20/26°C
24th Jul 2025205 AMAQI
24th Jul 2025236 AMAQI
24th Jul 2025227 AMAQI
24th Jul 2025248 AMAQI
24th Jul 2025269 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253211 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025371 PMAQI
24th Jul 2025392 PMAQI
24th Jul 2025363 PMAQI
24th Jul 2025334 PMAQI
24th Jul 2025365 PMAQI
24th Jul 2025376 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253610 PMAQI
24th Jul 20253511 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025351 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025373 AMAQI
25th Jul 2025394 AMAQI
26°C21/31°C
25th Jul 2025435 AMAQI
25th Jul 2025446 AMAQI
25th Jul 2025467 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025519 AMAQI
25th Jul 20255310 AMAQI
25th Jul 20255411 AMAQI
25th Jul 20255812 PMAQI
25th Jul 2025571 PMAQI
25th Jul 2025572 PMAQI
25th Jul 2025553 PMAQI
25th Jul 2025534 PMAQI
25th Jul 2025515 PMAQI
25th Jul 2025456 PMAQI
25th Jul 2025457 PMAQI
25th Jul 2025468 PMAQI
25th Jul 2025469 PMAQI
25th Jul 20254710 PMAQI
25th Jul 20254911 PMAQI
26th Jul 20254712 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025322 AMAQI
26th Jul 2025313 AMAQI
26th Jul 2025374 AMAQI
28°C24/35°C
26th Jul 2025405 AMAQI
26th Jul 2025486 AMAQI
26th Jul 2025467 AMAQI
26th Jul 2025548 AMAQI
26th Jul 2025629 AMAQI
26th Jul 20257010 AMAQI
26th Jul 20257611 AMAQI
26th Jul 20258212 PMAQI
26th Jul 2025841 PMAQI
26th Jul 2025842 PMAQI
26th Jul 2025783 PMAQI
26th Jul 2025794 PMAQI
26th Jul 2025855 PMAQI
26th Jul 2025786 PMAQI
26th Jul 2025717 PMAQI
26th Jul 2025648 PMAQI
26th Jul 2025759 PMAQI
26th Jul 20257110 PMAQI
26th Jul 20256811 PMAQI
27th Jul 20256612 AMAQI
27th Jul 2025881 AMAQI
27th Jul 2025832 AMAQI
27th Jul 2025823 AMAQI
27th Jul 2025744 AMAQI
25°C23/27°C
27th Jul 2025795 AMAQI
27th Jul 2025776 AMAQI
27th Jul 2025817 AMAQI
27th Jul 2025868 AMAQI
27th Jul 2025849 AMAQI
27th Jul 20258610 AMAQI
27th Jul 20258711 AMAQI
27th Jul 20258812 PMAQI
27th Jul 2025861 PMAQI
27th Jul 2025872 PMAQI
27th Jul 2025863 PMAQI
27th Jul 2025844 PMAQI
27th Jul 2025845 PMAQI
27th Jul 2025826 PMAQI
27th Jul 2025837 PMAQI
27th Jul 2025828 PMAQI
27th Jul 2025789 PMAQI
27th Jul 20257710 PMAQI
27th Jul 20257411 PMAQI
28th Jul 20257412 AMAQI
28th Jul 2025641 AMAQI
28th Jul 2025592 AMAQI
28th Jul 2025563 AMAQI
28th Jul 2025524 AMAQI
24°C22/27°C
28th Jul 2025535 AMAQI
28th Jul 2025536 AMAQI
28th Jul 2025547 AMAQI
28th Jul 2025548 AMAQI
28th Jul 2025549 AMAQI
28th Jul 20255410 AMAQI
28th Jul 20255311 AMAQI
28th Jul 20255412 PMAQI
28th Jul 2025541 PMAQI
28th Jul 2025552 PMAQI
28th Jul 2025553 PMAQI
28th Jul 2025544 PMAQI
28th Jul 2025545 PMAQI
28th Jul 2025546 PMAQI
28th Jul 2025557 PMAQI
28th Jul 2025568 PMAQI
28th Jul 2025559 PMAQI
28th Jul 20255510 PMAQI
28th Jul 20255511 PMAQI
29th Jul 20255412 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025572 AMAQI
29th Jul 2025583 AMAQI
29th Jul 2025584 AMAQI
26°C22/32°C
29th Jul 2025585 AMAQI
29th Jul 2025596 AMAQI
29th Jul 2025597 AMAQI
29th Jul 2025598 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20255910 AMAQI
29th Jul 20256211 AMAQI
29th Jul 20256112 PMAQI
29th Jul 2025621 PMAQI
29th Jul 2025632 PMAQI
29th Jul 2025613 PMAQI
29th Jul 2025604 PMAQI
29th Jul 2025605 PMAQI
29th Jul 2025586 PMAQI
29th Jul 2025597 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025589 PMAQI
29th Jul 20255810 PMAQI
29th Jul 20256011 PMAQI
30th Jul 20256012 AMAQI
30th Jul 2025621 AMAQI
30th Jul 2025602 AMAQI
30th Jul 2025603 AMAQI
30th Jul 2025584 AMAQI
29°C22/36°C
30th Jul 2025555 AMAQI
30th Jul 2025546 AMAQI
30th Jul 2025547 AMAQI
30th Jul 2025548 AMAQI
30th Jul 2025549 AMAQI
30th Jul 20255410 AMAQI
30th Jul 20255311 AMAQI
30th Jul 20255412 PMAQI
30th Jul 2025531 PMAQI
30th Jul 2025532 PMAQI
30th Jul 2025533 PMAQI
30th Jul 2025534 PMAQI
30th Jul 2025535 PMAQI
30th Jul 2025536 PMAQI
30th Jul 2025537 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025549 PMAQI
30th Jul 20255610 PMAQI
30th Jul 20255611 PMAQI
31st Jul 20255512 AMAQI
31st Jul 2025541 AMAQI
31st Jul 2025542 AMAQI
31st Jul 2025523 AMAQI
31st Jul 2025534 AMAQI
29°C23/35°C
31st Jul 2025525 AMAQI
31st Jul 2025546 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025588 AMAQI
31st Jul 2025589 AMAQI
31st Jul 20256210 AMAQI
31st Jul 20256511 AMAQI
31st Jul 20256412 PMAQI
31st Jul 2025661 PMAQI
31st Jul 2025682 PMAQI
31st Jul 2025723 PMAQI
31st Jul 2025784 PMAQI
31st Jul 2025765 PMAQI
31st Jul 2025786 PMAQI
31st Jul 2025597 PMAQI
31st Jul 2025668 PMAQI
31st Jul 2025729 PMAQI
31st Jul 20256810 PMAQI
31st Jul 20256011 PMAQI
1st Aug 20255412 AMAQI
1st Aug 2025461 AMAQI
1st Aug 2025402 AMAQI
1st Aug 2025393 AMAQI
1st Aug 2025404 AMAQI
25°C20/29°C
1st Aug 2025435 AMAQI
1st Aug 2025416 AMAQI
1st Aug 2025427 AMAQI
1st Aug 2025428 AMAQI
1st Aug 2025449 AMAQI
1st Aug 20254610 AMAQI
1st Aug 20254611 AMAQI
1st Aug 20255012 PMAQI
1st Aug 2025521 PMAQI
1st Aug 2025542 PMAQI
1st Aug 2025543 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025575 PMAQI
1st Aug 2025576 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025558 PMAQI
1st Aug 2025559 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20255711 PMAQI
2nd Aug 20255912 AMAQI
2nd Aug 2025621 AMAQI
2nd Aug 2025642 AMAQI
2nd Aug 2025643 AMAQI
2nd Aug 2025604 AMAQI
20°C16/24°C
2nd Aug 2025595 AMAQI
2nd Aug 2025576 AMAQI
2nd Aug 2025547 AMAQI
2nd Aug 2025488 AMAQI
2nd Aug 2025449 AMAQI
2nd Aug 20253710 AMAQI
2nd Aug 20253411 AMAQI
2nd Aug 20253012 PMAQI
2nd Aug 2025301 PMAQI
2nd Aug 2025282 PMAQI
2nd Aug 2025263 PMAQI
2nd Aug 2025274 PMAQI
2nd Aug 2025295 PMAQI
2nd Aug 2025326 PMAQI
2nd Aug 2025447 PMAQI
2nd Aug 2025418 PMAQI
2nd Aug 2025419 PMAQI
2nd Aug 20254210 PMAQI
2nd Aug 20254911 PMAQI
3rd Aug 20255412 AMAQI
3rd Aug 2025571 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025583 AMAQI
3rd Aug 2025564 AMAQI
21°C14/26°C
3rd Aug 2025565 AMAQI
3rd Aug 2025546 AMAQI
3rd Aug 2025537 AMAQI
3rd Aug 2025508 AMAQI
3rd Aug 2025539 AMAQI
3rd Aug 20255610 AMAQI
3rd Aug 20255811 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025611 PMAQI
3rd Aug 2025632 PMAQI
3rd Aug 2025623 PMAQI
3rd Aug 2025624 PMAQI
3rd Aug 2025605 PMAQI
3rd Aug 2025596 PMAQI
3rd Aug 2025547 PMAQI
3rd Aug 2025548 PMAQI
3rd Aug 2025529 PMAQI
3rd Aug 20255210 PMAQI
3rd Aug 20255011 PMAQI
4th Aug 20254812 AMAQI
4th Aug 2025511 AMAQI
4th Aug 2025512 AMAQI
4th Aug 2025533 AMAQI
4th Aug 2025544 AMAQI
23°C14/30°C
4th Aug 2025535 AMAQI
4th Aug 2025546 AMAQI
4th Aug 2025567 AMAQI
4th Aug 2025568 AMAQI
4th Aug 2025599 AMAQI
4th Aug 20256010 AMAQI
4th Aug 20256211 AMAQI
4th Aug 20256312 PMAQI
4th Aug 2025651 PMAQI
4th Aug 2025702 PMAQI
4th Aug 2025703 PMAQI
4th Aug 2025754 PMAQI
4th Aug 2025735 PMAQI
4th Aug 2025796 PMAQI
4th Aug 2025577 PMAQI
4th Aug 2025708 PMAQI
4th Aug 2025799 PMAQI
4th Aug 20257710 PMAQI
4th Aug 20257811 PMAQI
5th Aug 20257712 AMAQI
5th Aug 2025841 AMAQI
5th Aug 2025772 AMAQI
5th Aug 2025803 AMAQI
5th Aug 2025804 AMAQI
24°C16/32°C
5th Aug 2025875 AMAQI
5th Aug 2025866 AMAQI
5th Aug 2025937 AMAQI
5th Aug 20251028 AMAQI
5th Aug 20251069 AMAQI
5th Aug 202510410 AMAQI
5th Aug 202510411 AMAQI
5th Aug 202510512 PMAQI
5th Aug 20251041 PMAQI
5th Aug 20251072 PMAQI
5th Aug 20251033 PMAQI
5th Aug 20251064 PMAQI
5th Aug 2025955 PMAQI
5th Aug 2025896 PMAQI
5th Aug 2025947 PMAQI
5th Aug 2025858 PMAQI
5th Aug 2025769 PMAQI
5th Aug 20257610 PMAQI
5th Aug 20257411 PMAQI
6th Aug 20257812 AMAQI
6th Aug 2025741 AMAQI
6th Aug 2025722 AMAQI
6th Aug 2025703 AMAQI
6th Aug 2025744 AMAQI
24°C17/30°C
6th Aug 2025735 AMAQI
5 AM6th Aug 2025726 AMAQI
6th Aug 2025747 AMAQI
6th Aug 2025778 AMAQI
6th Aug 2025799 AMAQI
6th Aug 20258010 AMAQI
6th Aug 20257911 AMAQI
6th Aug 20257912 PMAQI
12 PM6th Aug 2025741 PMAQI
6th Aug 2025682 PMAQI
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
44AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
44AQI
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. 44), while the lowest AQI was between 5 AM to 8 PM (Avg. 44).
Night time
Avg. Highest Time
9 PM - 11 PM
43AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
2 AM - 4 AM
39AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 43), while the lowest AQI was between 2 AM to 4 AM (Avg. 39).
2025 Days Vs Air Quality
Westport, Connecticut, United States
2025
82%
108
18%
24
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Good
108 DaysModerate
24 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% 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
Westport, Connecticut, 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
18AQI
18AQI
2nd March 2025
30AQI
30AQI
3rd March 2025
50AQI
50AQI
4th March 2025
27AQI
27AQI
5th March 2025
43AQI
43AQI
1st April 2025
18AQI
18AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
44AQI
44AQI
4th April 2025
29AQI
29AQI
5th April 2025
18AQI
18AQI
6th April 2025
17AQI
17AQI
7th April 2025
17AQI
17AQI
8th April 2025
18AQI
18AQI
9th April 2025
17AQI
17AQI
10th April 2025
25AQI
25AQI
11th April 2025
22AQI
22AQI
12th April 2025
14AQI
14AQI
13th April 2025
16AQI
16AQI
14th April 2025
23AQI
23AQI
15th April 2025
40AQI
40AQI
16th April 2025
12AQI
12AQI
17th April 2025
16AQI
16AQI
18th April 2025
28AQI
28AQI
19th April 2025
57AQI
57AQI
20th April 2025
21AQI
21AQI
21st April 2025
19AQI
19AQI
22nd April 2025
42AQI
42AQI
23rd April 2025
23AQI
23AQI
24th April 2025
47AQI
47AQI
25th April 2025
40AQI
40AQI
26th April 2025
36AQI
36AQI
27th April 2025
11AQI
11AQI
28th April 2025
18AQI
18AQI
29th April 2025
29AQI
29AQI
30th April 2025
26AQI
26AQI
1st May 2025
18AQI
18AQI
2nd May 2025
46AQI
46AQI
3rd May 2025
51AQI
51AQI
4th May 2025
35AQI
35AQI
5th May 2025
23AQI
23AQI
6th May 2025
25AQI
25AQI
7th May 2025
27AQI
27AQI
8th May 2025
26AQI
26AQI
9th May 2025
22AQI
22AQI
10th May 2025
15AQI
15AQI
11th May 2025
27AQI
27AQI
12th May 2025
26AQI
26AQI
13th May 2025
33AQI
33AQI
14th May 2025
29AQI
29AQI
15th May 2025
28AQI
28AQI
16th May 2025
40AQI
40AQI
17th May 2025
42AQI
42AQI
18th May 2025
23AQI
23AQI
19th May 2025
18AQI
18AQI
20th May 2025
18AQI
18AQI
21st May 2025
19AQI
19AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
14AQI
14AQI
24th May 2025
13AQI
13AQI
25th May 2025
14AQI
14AQI
26th May 2025
21AQI
21AQI
27th May 2025
32AQI
32AQI
28th May 2025
25AQI
25AQI
29th May 2025
20AQI
20AQI
30th May 2025
40AQI
40AQI
31st May 2025
20AQI
20AQI
1st June 2025
16AQI
16AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
26AQI
26AQI
4th June 2025
40AQI
40AQI
5th June 2025
60AQI
60AQI
6th June 2025
59AQI
59AQI
7th June 2025
41AQI
41AQI
8th June 2025
56AQI
56AQI
9th June 2025
60AQI
60AQI
10th June 2025
33AQI
33AQI
11th June 2025
47AQI
47AQI
12th June 2025
63AQI
63AQI
13th June 2025
65AQI
65AQI
14th June 2025
59AQI
59AQI
15th June 2025
42AQI
42AQI
16th June 2025
34AQI
34AQI
17th June 2025
29AQI
29AQI
18th June 2025
25AQI
25AQI
19th June 2025
36AQI
36AQI
20th June 2025
29AQI
29AQI
21st June 2025
52AQI
52AQI
22nd June 2025
53AQI
53AQI
23rd June 2025
57AQI
57AQI
24th June 2025
59AQI
59AQI
25th June 2025
49AQI
49AQI
26th June 2025
40AQI
40AQI
27th June 2025
27AQI
27AQI
28th June 2025
31AQI
31AQI
29th June 2025
46AQI
46AQI
30th June 2025
41AQI
41AQI
1st July 2025
44AQI
44AQI
2nd July 2025
35AQI
35AQI
3rd July 2025
47AQI
47AQI
4th July 2025
44AQI
44AQI
5th July 2025
71AQI
71AQI
6th July 2025
59AQI
59AQI
7th July 2025
40AQI
40AQI
8th July 2025
42AQI
42AQI
9th July 2025
33AQI
33AQI
10th July 2025
38AQI
38AQI
11th July 2025
34AQI
34AQI
12th July 2025
27AQI
27AQI
13th July 2025
20AQI
20AQI
14th July 2025
23AQI
23AQI
15th July 2025
24AQI
24AQI
16th July 2025
38AQI
38AQI
17th July 2025
36AQI
36AQI
18th July 2025
18AQI
18AQI
19th July 2025
21AQI
21AQI
20th July 2025
23AQI
23AQI
21st July 2025
33AQI
33AQI
22nd July 2025
26AQI
26AQI
23rd July 2025
28AQI
28AQI
24th July 2025
30AQI
30AQI
25th July 2025
46AQI
46AQI
26th July 2025
61AQI
61AQI
27th July 2025
81AQI
81AQI
28th July 2025
56AQI
56AQI
29th July 2025
59AQI
59AQI
30th July 2025
55AQI
55AQI
31st July 2025
62AQI
62AQI
1st August 2025
49AQI
49AQI
2nd August 2025
46AQI
46AQI
3rd August 2025
56AQI
56AQI
4th August 2025
63AQI
63AQI
5th August 2025
91AQI
91AQI
34AQI
25AQI
26AQI
43AQI
40AQI
61AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202535AQI
5
29
1
30
1
19
11
23
8
2
3
108
24
Highest AQI recorded in
August61AQI
Lowest AQI recorded in
April25AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
35AQILeast Polluted Year Recorded
2025(Avg.)
35AQIWestport's annual 2025 AQI (35) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
