Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Weymouth, Massachusetts, 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

Weymouth, Massachusetts, United States

2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Aug 2025
77AQI
Lowest AQI recorded on
20th Aug 2025
17AQI

Same Day Analysis (12th August):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 30 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 11th Aug - 12th Aug 2026

Weymouth, Massachusetts, United States

AQI
Day
Night
.

5 AM11th Aug 2026

8 PM

4 AM12th Aug 2026

Day time
Avg. Highest Time
2PM11th Aug

48AQI

Avg. Lowest Time
5AM11th Aug

25AQI

Night time
Avg. Highest Time
2AM12th Aug

46AQI

Avg. Lowest Time
10PM11th Aug

33AQI

In the last 24 hours,

Weymouth's AQI reached its highest point of 48 at 2 PM during the Day, while the lowest point, 25, was recorded at 5 AM during the Day between 11th Aug and 12th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Weymouth, Massachusetts, United States

JulAug
14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th
Day
Night
14th Jul 2026185 AMAQI
14th Jul 2026126 AMAQI
14th Jul 2026237 AMAQI
14th Jul 2026218 AMAQI
14th Jul 2026249 AMAQI
14th Jul 20262410 AMAQI
14th Jul 20261711 AMAQI
14th Jul 20262012 PMAQI
14th Jul 2026201 PMAQI
14th Jul 2026282 PMAQI
14th Jul 2026203 PMAQI
14th Jul 2026244 PMAQI
14th Jul 2026225 PMAQI
14th Jul 2026286 PMAQI
14th Jul 2026227 PMAQI
14th Jul 2026208 PMAQI
14th Jul 2026209 PMAQI
14th Jul 20262010 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20261912 AMAQI
15th Jul 2026181 AMAQI
15th Jul 2026422 AMAQI
15th Jul 2026163 AMAQI
15th Jul 2026364 AMAQI

29°C21/37°C

15th Jul 2026325 AMAQI
15th Jul 2026186 AMAQI
15th Jul 2026567 AMAQI
15th Jul 2026448 AMAQI
15th Jul 2026499 AMAQI
15th Jul 20267510 AMAQI
15th Jul 20266411 AMAQI
15th Jul 20266012 PMAQI
15th Jul 2026601 PMAQI
15th Jul 2026442 PMAQI
15th Jul 2026823 PMAQI
15th Jul 2026744 PMAQI
15th Jul 2026545 PMAQI
15th Jul 2026546 PMAQI
15th Jul 2026497 PMAQI
15th Jul 2026518 PMAQI
15th Jul 2026609 PMAQI
15th Jul 20265610 PMAQI
15th Jul 20265811 PMAQI
16th Jul 20265412 AMAQI
16th Jul 2026541 AMAQI
16th Jul 2026782 AMAQI
16th Jul 2026463 AMAQI
16th Jul 2026494 AMAQI

29°C23/35°C

16th Jul 2026465 AMAQI
16th Jul 2026406 AMAQI
16th Jul 2026407 AMAQI
16th Jul 2026398 AMAQI
16th Jul 2026359 AMAQI
16th Jul 20262910 AMAQI
16th Jul 20263711 AMAQI
16th Jul 20263212 PMAQI
16th Jul 2026331 PMAQI
16th Jul 2026332 PMAQI
16th Jul 2026663 PMAQI
16th Jul 2026714 PMAQI
16th Jul 2026285 PMAQI
16th Jul 2026306 PMAQI
16th Jul 2026517 PMAQI
16th Jul 2026588 PMAQI
16th Jul 2026429 PMAQI
16th Jul 20264310 PMAQI
16th Jul 20264811 PMAQI
17th Jul 20264412 AMAQI
17th Jul 2026491 AMAQI
17th Jul 2026542 AMAQI
17th Jul 2026593 AMAQI
17th Jul 2026514 AMAQI

26°C19/35°C

17th Jul 2026765 AMAQI
17th Jul 2026656 AMAQI
17th Jul 2026677 AMAQI
17th Jul 2026608 AMAQI
17th Jul 2026539 AMAQI
17th Jul 20264210 AMAQI
17th Jul 20263611 AMAQI
17th Jul 20263412 PMAQI
17th Jul 2026381 PMAQI
17th Jul 2026382 PMAQI
17th Jul 2026443 PMAQI
17th Jul 2026464 PMAQI
17th Jul 2026345 PMAQI
17th Jul 2026236 PMAQI
17th Jul 2026277 PMAQI
17th Jul 2026298 PMAQI
17th Jul 2026319 PMAQI
17th Jul 20263210 PMAQI
17th Jul 20263811 PMAQI
18th Jul 20263612 AMAQI
18th Jul 2026441 AMAQI
18th Jul 2026462 AMAQI
18th Jul 2026403 AMAQI
18th Jul 2026464 AMAQI

25°C17/32°C

18th Jul 2026405 AMAQI
18th Jul 2026526 AMAQI
18th Jul 2026507 AMAQI
18th Jul 2026468 AMAQI
18th Jul 2026589 AMAQI
18th Jul 20267610 AMAQI
18th Jul 20268411 AMAQI
18th Jul 20269212 PMAQI
18th Jul 20261151 PMAQI
18th Jul 20261362 PMAQI
18th Jul 20261383 PMAQI
18th Jul 20261444 PMAQI
18th Jul 20261385 PMAQI
18th Jul 20261486 PMAQI
18th Jul 20261507 PMAQI
18th Jul 20261588 PMAQI
18th Jul 20261589 PMAQI
18th Jul 202615410 PMAQI
18th Jul 202614811 PMAQI
19th Jul 202614212 AMAQI
19th Jul 2026981 AMAQI
19th Jul 2026782 AMAQI
19th Jul 2026593 AMAQI
19th Jul 2026584 AMAQI

23°C16/32°C

19th Jul 2026425 AMAQI
19th Jul 2026466 AMAQI
19th Jul 2026467 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026389 AMAQI
19th Jul 20264410 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20263412 PMAQI
19th Jul 2026211 PMAQI
19th Jul 2026212 PMAQI
19th Jul 2026333 PMAQI
19th Jul 2026274 PMAQI
19th Jul 2026365 PMAQI
19th Jul 2026296 PMAQI
19th Jul 2026467 PMAQI
19th Jul 2026298 PMAQI
19th Jul 2026369 PMAQI
19th Jul 20264010 PMAQI
19th Jul 20264611 PMAQI
20th Jul 20264212 AMAQI
20th Jul 2026501 AMAQI
20th Jul 2026402 AMAQI
20th Jul 2026503 AMAQI
20th Jul 2026264 AMAQI

24°C20/30°C

20th Jul 2026225 AMAQI
20th Jul 2026236 AMAQI
20th Jul 2026227 AMAQI
20th Jul 202698 AMAQI
20th Jul 2026299 AMAQI
20th Jul 20261510 AMAQI
20th Jul 20262311 AMAQI
20th Jul 20262212 PMAQI
20th Jul 2026191 PMAQI
20th Jul 2026162 PMAQI
20th Jul 2026253 PMAQI
20th Jul 2026204 PMAQI
20th Jul 2026215 PMAQI
20th Jul 2026486 PMAQI
20th Jul 2026867 PMAQI
20th Jul 2026568 PMAQI
20th Jul 2026329 PMAQI
20th Jul 20262410 PMAQI
21st Jul 20264712 AMAQI
21st Jul 2026291 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026213 AMAQI
21st Jul 2026524 AMAQI

23°C15/31°C

21st Jul 2026565 AMAQI
21st Jul 2026426 AMAQI
21st Jul 2026467 AMAQI
21st Jul 2026338 AMAQI
21st Jul 2026389 AMAQI
21st Jul 20264610 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20264612 PMAQI
21st Jul 2026481 PMAQI
21st Jul 2026482 PMAQI
21st Jul 2026443 PMAQI
21st Jul 2026444 PMAQI
21st Jul 2026405 PMAQI
21st Jul 2026466 PMAQI
21st Jul 2026517 PMAQI
21st Jul 2026498 PMAQI
21st Jul 2026449 PMAQI
21st Jul 20263810 PMAQI
21st Jul 20263611 PMAQI
22nd Jul 20263112 AMAQI
22nd Jul 2026291 AMAQI
22nd Jul 2026252 AMAQI
22nd Jul 2026293 AMAQI
22nd Jul 2026404 AMAQI

23°C16/31°C

22nd Jul 2026405 AMAQI
22nd Jul 2026426 AMAQI
22nd Jul 2026257 AMAQI
22nd Jul 2026258 AMAQI
22nd Jul 2026299 AMAQI
22nd Jul 20262310 AMAQI
22nd Jul 20262511 AMAQI
22nd Jul 20262512 PMAQI
22nd Jul 2026251 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026273 PMAQI
22nd Jul 2026294 PMAQI
22nd Jul 2026235 PMAQI
22nd Jul 2026296 PMAQI
22nd Jul 2026237 PMAQI
22nd Jul 2026298 PMAQI
22nd Jul 2026239 PMAQI
22nd Jul 20262510 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20263212 AMAQI
23rd Jul 2026161 AMAQI
23rd Jul 2026212 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026214 AMAQI

25°C21/31°C

23rd Jul 2026215 AMAQI
23rd Jul 2026216 AMAQI
23rd Jul 2026127 AMAQI
23rd Jul 202688 AMAQI
23rd Jul 202689 AMAQI
23rd Jul 20261710 AMAQI
23rd Jul 2026811 AMAQI
23rd Jul 20262812 PMAQI
23rd Jul 202691 PMAQI
23rd Jul 2026142 PMAQI
23rd Jul 2026143 PMAQI
23rd Jul 2026184 PMAQI
23rd Jul 2026385 PMAQI
23rd Jul 2026146 PMAQI
23rd Jul 2026217 PMAQI
23rd Jul 2026348 PMAQI
23rd Jul 2026279 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026273 AMAQI
24th Jul 2026254 AMAQI

22°C15/29°C

24th Jul 2026365 AMAQI
24th Jul 2026426 AMAQI
24th Jul 2026277 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026219 AMAQI
24th Jul 20262510 AMAQI
24th Jul 20262111 AMAQI
24th Jul 20262112 PMAQI
24th Jul 2026251 PMAQI
24th Jul 2026292 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026165 PMAQI
24th Jul 2026256 PMAQI
24th Jul 2026217 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20262510 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20263612 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026322 AMAQI
25th Jul 2026213 AMAQI
25th Jul 2026184 AMAQI

23°C15/32°C

25th Jul 2026325 AMAQI
25th Jul 2026386 AMAQI
25th Jul 2026387 AMAQI
25th Jul 2026348 AMAQI
25th Jul 2026279 AMAQI
25th Jul 20263210 AMAQI
25th Jul 20262111 AMAQI
25th Jul 20262912 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026422 PMAQI
25th Jul 2026273 PMAQI
25th Jul 2026404 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026386 PMAQI
25th Jul 2026387 PMAQI
25th Jul 2026188 PMAQI
25th Jul 2026169 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20263111 PMAQI
26th Jul 20264212 AMAQI
26th Jul 2026421 AMAQI
26th Jul 2026362 AMAQI
26th Jul 2026493 AMAQI
26th Jul 2026364 AMAQI

22°C15/30°C

26th Jul 2026235 AMAQI
26th Jul 2026426 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026348 AMAQI
26th Jul 2026329 AMAQI
26th Jul 20263410 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20263812 PMAQI
26th Jul 2026291 PMAQI
26th Jul 2026232 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026294 PMAQI
26th Jul 2026315 PMAQI
26th Jul 2026336 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026298 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20262110 PMAQI
26th Jul 20263611 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026293 AMAQI
27th Jul 2026364 AMAQI

19°C14/26°C

27th Jul 2026345 AMAQI
27th Jul 2026276 AMAQI
27th Jul 2026387 AMAQI
27th Jul 2026238 AMAQI
27th Jul 2026349 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20263611 AMAQI
27th Jul 20263612 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026382 PMAQI
27th Jul 2026363 PMAQI
27th Jul 2026384 PMAQI
27th Jul 2026405 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026318 PMAQI
27th Jul 2026239 PMAQI
27th Jul 20263410 PMAQI
27th Jul 20263211 PMAQI
28th Jul 20263212 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026362 AMAQI
28th Jul 2026343 AMAQI
28th Jul 2026304 AMAQI

22°C13/30°C

28th Jul 2026305 AMAQI
28th Jul 2026406 AMAQI
28th Jul 2026307 AMAQI
28th Jul 2026328 AMAQI
28th Jul 2026449 AMAQI
28th Jul 20264410 AMAQI
28th Jul 20264011 AMAQI
28th Jul 20264612 PMAQI
28th Jul 2026441 PMAQI
28th Jul 2026462 PMAQI
28th Jul 2026443 PMAQI
28th Jul 2026444 PMAQI
28th Jul 2026425 PMAQI
28th Jul 2026426 PMAQI
28th Jul 2026367 PMAQI
28th Jul 2026368 PMAQI
28th Jul 2026349 PMAQI
28th Jul 20262710 PMAQI
28th Jul 20263411 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026321 AMAQI
29th Jul 2026182 AMAQI
29th Jul 2026163 AMAQI
29th Jul 2026154 AMAQI

24°C18/30°C

29th Jul 2026165 AMAQI
29th Jul 2026306 AMAQI
29th Jul 2026197 AMAQI
29th Jul 2026228 AMAQI
29th Jul 2026329 AMAQI
29th Jul 20263410 AMAQI
29th Jul 20262411 AMAQI
29th Jul 20262412 PMAQI
29th Jul 2026241 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026203 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026505 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026337 PMAQI
29th Jul 2026348 PMAQI
29th Jul 2026469 PMAQI
29th Jul 20264810 PMAQI
29th Jul 20263611 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026171 AMAQI
30th Jul 2026422 AMAQI
30th Jul 2026463 AMAQI
30th Jul 2026344 AMAQI

21°C19/26°C

30th Jul 2026335 AMAQI
30th Jul 2026266 AMAQI
30th Jul 2026197 AMAQI
30th Jul 2026268 AMAQI
30th Jul 2026209 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20261812 PMAQI
30th Jul 2026161 PMAQI
30th Jul 2026142 PMAQI
30th Jul 2026133 PMAQI
30th Jul 2026214 PMAQI
30th Jul 2026105 PMAQI
30th Jul 2026166 PMAQI
30th Jul 2026167 PMAQI
30th Jul 2026228 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20261210 PMAQI
30th Jul 20262111 PMAQI
31st Jul 20262112 AMAQI
31st Jul 2026211 AMAQI
31st Jul 2026252 AMAQI
31st Jul 2026213 AMAQI
31st Jul 2026404 AMAQI

19°C17/21°C

31st Jul 2026265 AMAQI
31st Jul 2026256 AMAQI
31st Jul 2026177 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026259 AMAQI
31st Jul 20262110 AMAQI
31st Jul 20262311 AMAQI
31st Jul 20263212 PMAQI
31st Jul 2026231 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026274 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026346 PMAQI
31st Jul 2026217 PMAQI
31st Jul 2026238 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20264212 AMAQI
1st Aug 2026381 AMAQI
1st Aug 2026342 AMAQI
1st Aug 2026363 AMAQI
1st Aug 2026214 AMAQI

23°C17/29°C

1st Aug 2026215 AMAQI
1st Aug 2026346 AMAQI
1st Aug 2026327 AMAQI
1st Aug 2026328 AMAQI
1st Aug 2026329 AMAQI
1st Aug 20263210 AMAQI
1st Aug 20263411 AMAQI
1st Aug 20263812 PMAQI
1st Aug 2026361 PMAQI
1st Aug 2026342 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026424 PMAQI
1st Aug 2026465 PMAQI
1st Aug 2026446 PMAQI
1st Aug 2026407 PMAQI
1st Aug 2026388 PMAQI
1st Aug 2026299 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20263611 PMAQI
2nd Aug 20262512 AMAQI
2nd Aug 2026361 AMAQI
2nd Aug 2026322 AMAQI
2nd Aug 2026363 AMAQI
2nd Aug 2026324 AMAQI

26°C18/32°C

2nd Aug 2026345 AMAQI
2nd Aug 2026306 AMAQI
2nd Aug 2026367 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026449 AMAQI
2nd Aug 20264610 AMAQI
2nd Aug 20262511 AMAQI
2nd Aug 20264012 PMAQI
2nd Aug 2026401 PMAQI
2nd Aug 2026442 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026384 PMAQI
2nd Aug 2026365 PMAQI
2nd Aug 2026366 PMAQI
2nd Aug 2026387 PMAQI
2nd Aug 2026348 PMAQI
2nd Aug 2026229 PMAQI
2nd Aug 20262210 PMAQI
2nd Aug 20262111 PMAQI
3rd Aug 20262312 AMAQI
3rd Aug 2026291 AMAQI
3rd Aug 2026382 AMAQI
3rd Aug 2026273 AMAQI
3rd Aug 2026364 AMAQI

26°C21/34°C

3rd Aug 2026385 AMAQI
3rd Aug 2026406 AMAQI
3rd Aug 2026467 AMAQI
3rd Aug 2026468 AMAQI
3rd Aug 2026449 AMAQI
3rd Aug 20264410 AMAQI
3rd Aug 20264211 AMAQI
3rd Aug 20264212 PMAQI
3rd Aug 2026361 PMAQI
3rd Aug 2026482 PMAQI
3rd Aug 2026383 PMAQI
3rd Aug 2026324 PMAQI
3rd Aug 2026205 PMAQI
3rd Aug 2026226 PMAQI
3rd Aug 2026207 PMAQI
3rd Aug 2026188 PMAQI
3rd Aug 2026249 PMAQI
3rd Aug 20262410 PMAQI
3rd Aug 20262011 PMAQI
4th Aug 20261912 AMAQI
4th Aug 2026191 AMAQI
4th Aug 2026212 AMAQI
4th Aug 2026203 AMAQI
4th Aug 2026174 AMAQI

24°C21/26°C

4th Aug 2026205 AMAQI
4th Aug 2026226 AMAQI
4th Aug 2026187 AMAQI
4th Aug 2026178 AMAQI
4th Aug 2026149 AMAQI
4th Aug 20261310 AMAQI
4th Aug 20261111 AMAQI
4th Aug 20261012 PMAQI
4th Aug 2026211 PMAQI
4th Aug 2026132 PMAQI
4th Aug 2026363 PMAQI
4th Aug 2026314 PMAQI
4th Aug 2026125 PMAQI
4th Aug 2026106 PMAQI
4th Aug 2026167 PMAQI
4th Aug 2026128 PMAQI
4th Aug 2026109 PMAQI
4th Aug 20261410 PMAQI
4th Aug 20261011 PMAQI
5th Aug 20261912 AMAQI
5th Aug 2026251 AMAQI
5th Aug 2026102 AMAQI
5th Aug 2026133 AMAQI
5th Aug 2026214 AMAQI

25°C17/34°C

5th Aug 2026165 AMAQI
5th Aug 202686 AMAQI
5th Aug 2026147 AMAQI
5th Aug 2026238 AMAQI
5th Aug 2026129 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20263311 AMAQI
5th Aug 20265412 PMAQI
5th Aug 2026231 PMAQI
5th Aug 2026542 PMAQI
5th Aug 2026563 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026478 PMAQI
5th Aug 2026469 PMAQI
5th Aug 20263610 PMAQI
5th Aug 20264211 PMAQI
6th Aug 20264012 AMAQI
6th Aug 2026451 AMAQI
6th Aug 2026382 AMAQI
6th Aug 2026293 AMAQI
6th Aug 2026444 AMAQI

26°C18/35°C

6th Aug 2026325 AMAQI
6th Aug 2026366 AMAQI
6th Aug 2026277 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026369 AMAQI
6th Aug 20264810 AMAQI
6th Aug 20263611 AMAQI
6th Aug 20263212 PMAQI
6th Aug 2026361 PMAQI
6th Aug 2026362 PMAQI
6th Aug 2026343 PMAQI
6th Aug 2026344 PMAQI
6th Aug 2026365 PMAQI
6th Aug 2026306 PMAQI
6th Aug 2026407 PMAQI
6th Aug 2026468 PMAQI
6th Aug 2026489 PMAQI
6th Aug 20265210 PMAQI
6th Aug 20264011 PMAQI
7th Aug 20264212 AMAQI
7th Aug 2026461 AMAQI
7th Aug 2026482 AMAQI
7th Aug 2026533 AMAQI
7th Aug 2026544 AMAQI

27°C22/32°C

7th Aug 2026535 AMAQI
7th Aug 2026536 AMAQI
7th Aug 2026537 AMAQI
7th Aug 2026538 AMAQI
7th Aug 2026539 AMAQI
7th Aug 20265010 AMAQI
7th Aug 20264811 AMAQI
7th Aug 20265212 PMAQI
7th Aug 2026441 PMAQI
7th Aug 2026422 PMAQI
7th Aug 2026403 PMAQI
7th Aug 2026254 PMAQI
7th Aug 2026255 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026237 PMAQI
7th Aug 2026218 PMAQI
7th Aug 2026449 PMAQI
7th Aug 20264210 PMAQI
7th Aug 20262511 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026253 AMAQI
8th Aug 2026384 AMAQI

30°C24/37°C

8th Aug 2026255 AMAQI
8th Aug 2026386 AMAQI
8th Aug 2026367 AMAQI
8th Aug 2026408 AMAQI
8th Aug 2026469 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20264611 AMAQI
8th Aug 20263312 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026212 PMAQI
8th Aug 2026253 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026295 PMAQI
8th Aug 2026296 PMAQI
8th Aug 2026277 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026239 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262511 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026251 AMAQI
9th Aug 2026252 AMAQI
9th Aug 2026213 AMAQI
9th Aug 2026384 AMAQI

29°C22/36°C

9th Aug 2026235 AMAQI
9th Aug 2026236 AMAQI
9th Aug 2026217 AMAQI
9th Aug 2026388 AMAQI
9th Aug 2026309 AMAQI
9th Aug 20262910 AMAQI
9th Aug 20262511 AMAQI
9th Aug 20262912 PMAQI
9th Aug 2026461 PMAQI
9th Aug 2026482 PMAQI
9th Aug 2026443 PMAQI
9th Aug 2026504 PMAQI
9th Aug 2026465 PMAQI
9th Aug 2026466 PMAQI
9th Aug 2026447 PMAQI
9th Aug 2026468 PMAQI
9th Aug 2026469 PMAQI
9th Aug 20264010 PMAQI
9th Aug 20262511 PMAQI
10th Aug 20262512 AMAQI
10th Aug 2026211 AMAQI
10th Aug 2026212 AMAQI
10th Aug 2026213 AMAQI
10th Aug 2026324 AMAQI

28°C22/35°C

10th Aug 2026295 AMAQI
10th Aug 2026266 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026238 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262710 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20262512 PMAQI
10th Aug 2026251 PMAQI
10th Aug 2026402 PMAQI
10th Aug 2026483 PMAQI
10th Aug 2026444 PMAQI
10th Aug 2026445 PMAQI
10th Aug 2026426 PMAQI
10th Aug 2026257 PMAQI
10th Aug 2026258 PMAQI
10th Aug 2026329 PMAQI
10th Aug 20262510 PMAQI
10th Aug 20262511 PMAQI
11th Aug 20262912 AMAQI
11th Aug 2026271 AMAQI
11th Aug 2026292 AMAQI
11th Aug 2026233 AMAQI
11th Aug 2026234 AMAQI

27°C20/35°C

11th Aug 2026255 AMAQI
11th Aug 2026296 AMAQI
11th Aug 2026297 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026409 AMAQI
11th Aug 20264410 AMAQI
11th Aug 20264411 AMAQI
11th Aug 20264412 PMAQI
11th Aug 2026441 PMAQI
11th Aug 2026482 PMAQI
11th Aug 2026483 PMAQI
11th Aug 2026444 PMAQI
11th Aug 2026425 PMAQI
11th Aug 2026426 PMAQI
11th Aug 2026427 PMAQI
11th Aug 2026408 PMAQI
11th Aug 2026429 PMAQI
11th Aug 20263310 PMAQI
11th Aug 20263811 PMAQI
12th Aug 20263812 AMAQI
12th Aug 2026401 AMAQI
12th Aug 2026462 AMAQI
12th Aug 2026383 AMAQI
12th Aug 2026384 AMAQI

27°C22/34°C

12th Aug 2026365 AMAQI
5 AM
12th Aug 2026386 AMAQI
12th Aug 2026237 AMAQI
12th Aug 2026278 AMAQI
12th Aug 2026319 AMAQI
12th Aug 20263210 AMAQI
12th Aug 20262511 AMAQI
12th Aug 20262512 PMAQI
12 PM
12th Aug 2026251 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026253 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026305 PMAQI
12th Aug 2026256 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026238 PMAQI
8 PM
12th Aug 2026259 PMAQI
12th Aug 20262310 PMAQI
12th Aug 20262911 PMAQI
12 AM
4 AM

25°C18/32°C

Day time
Avg. Highest Time
3 PM - 4 PM

40AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
7 AM - 8 AM

32AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 4 PM (Avg. 40), while the lowest AQI was between 7 AM to 8 AM (Avg. 32).
Night time
Avg. Highest Time
12 AM

36AQI

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 12 AM to 12 AM (Avg. 36), while the lowest AQI was between 3 AM to 3 AM (Avg. 32).

2026 Days Vs Air Quality

Weymouth, Massachusetts, United States

2026

98%

216

2%

5

Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)

Good
216 Days
Moderate
5 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 98%

Health Risk Level:

Very Low

In 2026, 98% of 224 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

Weymouth, Massachusetts, United States

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
31AQI (US)
2nd January 2026
28AQI (US)
3rd January 2026
23AQI (US)
4th January 2026
27AQI (US)
5th January 2026
26AQI (US)
6th January 2026
53AQI (US)
7th January 2026
41AQI (US)
8th January 2026
30AQI (US)
9th January 2026
33AQI (US)
10th January 2026
19AQI (US)
11th January 2026
15AQI (US)
12th January 2026
16AQI (US)
13th January 2026
28AQI (US)
14th January 2026
39AQI (US)
15th January 2026
45AQI (US)
16th January 2026
11AQI (US)
17th January 2026
30AQI (US)
18th January 2026
57AQI (US)
19th January 2026
39AQI (US)
20th January 2026
43AQI (US)
21st January 2026
35AQI (US)
22nd January 2026
38AQI (US)
23rd January 2026
38AQI (US)
24th January 2026
39AQI (US)
25th January 2026
45AQI (US)
26th January 2026
47AQI (US)
27th January 2026
42AQI (US)
28th January 2026
22AQI (US)
29th January 2026
27AQI (US)
30th January 2026
43AQI (US)
31st January 2026
31AQI (US)
1st February 2026
28AQI (US)
2nd February 2026
32AQI (US)
3rd February 2026
30AQI (US)
4th February 2026
30AQI (US)
5th February 2026
39AQI (US)
6th February 2026
34AQI (US)
7th February 2026
24AQI (US)
8th February 2026
25AQI (US)
9th February 2026
34AQI (US)
10th February 2026
44AQI (US)
11th February 2026
24AQI (US)
12th February 2026
37AQI (US)
13th February 2026
37AQI (US)
14th February 2026
36AQI (US)
15th February 2026
26AQI (US)
16th February 2026
35AQI (US)
17th February 2026
31AQI (US)
18th February 2026
38AQI (US)
19th February 2026
39AQI (US)
20th February 2026
24AQI (US)
21st February 2026
35AQI (US)
22nd February 2026
25AQI (US)
23rd February 2026
36AQI (US)
24th February 2026
45AQI (US)
25th February 2026
35AQI (US)
26th February 2026
21AQI (US)
27th February 2026
26AQI (US)
28th February 2026
22AQI (US)
1st March 2026
26AQI (US)
2nd March 2026
39AQI (US)
3rd March 2026
24AQI (US)
4th March 2026
36AQI (US)
5th March 2026
28AQI (US)
6th March 2026
18AQI (US)
7th March 2026
32AQI (US)
8th March 2026
22AQI (US)
9th March 2026
27AQI (US)
10th March 2026
25AQI (US)
11th March 2026
29AQI (US)
12th March 2026
20AQI (US)
13th March 2026
28AQI (US)
14th March 2026
25AQI (US)
15th March 2026
35AQI (US)
16th March 2026
27AQI (US)
17th March 2026
30AQI (US)
18th March 2026
29AQI (US)
19th March 2026
28AQI (US)
20th March 2026
28AQI (US)
21st March 2026
28AQI (US)
22nd March 2026
22AQI (US)
23rd March 2026
40AQI (US)
24th March 2026
26AQI (US)
25th March 2026
22AQI (US)
26th March 2026
18AQI (US)
27th March 2026
24AQI (US)
28th March 2026
35AQI (US)
29th March 2026
27AQI (US)
30th March 2026
18AQI (US)
31st March 2026
26AQI (US)
1st April 2026
28AQI (US)
2nd April 2026
20AQI (US)
3rd April 2026
20AQI (US)
4th April 2026
24AQI (US)
5th April 2026
28AQI (US)
6th April 2026
29AQI (US)
7th April 2026
26AQI (US)
8th April 2026
28AQI (US)
9th April 2026
21AQI (US)
10th April 2026
23AQI (US)
11th April 2026
29AQI (US)
12th April 2026
30AQI (US)
13th April 2026
23AQI (US)
14th April 2026
21AQI (US)
15th April 2026
18AQI (US)
16th April 2026
18AQI (US)
17th April 2026
18th April 2026
27AQI (US)
19th April 2026
35AQI (US)
20th April 2026
31AQI (US)
21st April 2026
23AQI (US)
22nd April 2026
23rd April 2026
18AQI (US)
24th April 2026
22AQI (US)
25th April 2026
29AQI (US)
26th April 2026
34AQI (US)
27th April 2026
15AQI (US)
28th April 2026
17AQI (US)
29th April 2026
17AQI (US)
30th April 2026
22AQI (US)
1st May 2026
26AQI (US)
2nd May 2026
19AQI (US)
3rd May 2026
21AQI (US)
4th May 2026
27AQI (US)
5th May 2026
26AQI (US)
6th May 2026
20AQI (US)
7th May 2026
26AQI (US)
8th May 2026
26AQI (US)
9th May 2026
10th May 2026
26AQI (US)
11th May 2026
29AQI (US)
12th May 2026
27AQI (US)
13th May 2026
20AQI (US)
14th May 2026
17AQI (US)
15th May 2026
43AQI (US)
16th May 2026
47AQI (US)
17th May 2026
49AQI (US)
18th May 2026
55AQI (US)
19th May 2026
52AQI (US)
20th May 2026
44AQI (US)
21st May 2026
39AQI (US)
22nd May 2026
35AQI (US)
23rd May 2026
42AQI (US)
24th May 2026
45AQI (US)
25th May 2026
45AQI (US)
26th May 2026
21AQI (US)
27th May 2026
14AQI (US)
28th May 2026
15AQI (US)
29th May 2026
17AQI (US)
30th May 2026
17AQI (US)
31st May 2026
21AQI (US)
1st June 2026
14AQI (US)
2nd June 2026
15AQI (US)
3rd June 2026
16AQI (US)
4th June 2026
17AQI (US)
5th June 2026
23AQI (US)
6th June 2026
34AQI (US)
7th June 2026
14AQI (US)
8th June 2026
12AQI (US)
9th June 2026
15AQI (US)
10th June 2026
18AQI (US)
11th June 2026
23AQI (US)
12th June 2026
20AQI (US)
13th June 2026
12AQI (US)
14th June 2026
14AQI (US)
15th June 2026
15AQI (US)
16th June 2026
16AQI (US)
17th June 2026
18AQI (US)
18th June 2026
19AQI (US)
19th June 2026
14AQI (US)
20th June 2026
22AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
16AQI (US)
23rd June 2026
17AQI (US)
24th June 2026
15AQI (US)
25th June 2026
17AQI (US)
26th June 2026
15AQI (US)
27th June 2026
21AQI (US)
28th June 2026
19AQI (US)
29th June 2026
18AQI (US)
30th June 2026
25AQI (US)
1st July 2026
19AQI (US)
2nd July 2026
29AQI (US)
3rd July 2026
33AQI (US)
4th July 2026
29AQI (US)
5th July 2026
36AQI (US)
6th July 2026
25AQI (US)
7th July 2026
18AQI (US)
8th July 2026
22AQI (US)
9th July 2026
19AQI (US)
10th July 2026
16AQI (US)
11th July 2026
26AQI (US)
12th July 2026
18AQI (US)
13th July 2026
20AQI (US)
14th July 2026
21AQI (US)
15th July 2026
49AQI (US)
16th July 2026
45AQI (US)
17th July 2026
45AQI (US)
18th July 2026
96AQI (US)
19th July 2026
46AQI (US)
20th July 2026
31AQI (US)
21st July 2026
43AQI (US)
22nd July 2026
28AQI (US)
23rd July 2026
20AQI (US)
24th July 2026
25AQI (US)
25th July 2026
30AQI (US)
26th July 2026
33AQI (US)
27th July 2026
32AQI (US)
28th July 2026
38AQI (US)
29th July 2026
28AQI (US)
30th July 2026
23AQI (US)
31st July 2026
26AQI (US)
1st August 2026
35AQI (US)
2nd August 2026
35AQI (US)
3rd August 2026
33AQI (US)
4th August 2026
17AQI (US)
5th August 2026
29AQI (US)
6th August 2026
38AQI (US)
7th August 2026
42AQI (US)
8th August 2026
29AQI (US)
9th August 2026
35AQI (US)
10th August 2026
29AQI (US)
11th August 2026
37AQI (US)
12th August 2026
30AQI (US)
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

34AQI (US)

32AQI (US)

27AQI (US)

24AQI (US)

30AQI (US)

18AQI (US)

31AQI (US)

32AQI (US)

No. of days

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

202628AQI (US)

29
2
28
31
28
28
2
30
30
1
12
216
5

Highest AQI (US) recorded in

January

34AQI (US)

Lowest AQI (US) recorded in

June

18AQI (US)

202531AQI (US)

5
30
31
19
11
23
8
22
9
30
29
2
28
2
28
3
245
35

Highest AQI (US) recorded in

June

43AQI (US)

Lowest AQI (US) recorded in

April

22AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2025(Avg.)
31AQI (US)
Least Polluted Year Recorded
2026(Avg.)
28AQI (US)

Weymouth's annual 2026 AQI (US) (28) shows an average percentage change of -9.6% (improved AQI (US)) compared to previous years: 2025 (31).