Boston, 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
Boston, Massachusetts, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
80AQILowest AQI recorded on
20th Aug 2024
15AQISame Day Analysis (5th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 29 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 5th Aug - 6th Aug 2026
Boston, Massachusetts, United States
AQI
Day
Night
.
5 AM5th Aug 2026
8 PM
4 AM6th Aug 2026
Day time
Avg. Highest Time
12PM5th Aug
54AQI
Avg. Lowest Time
6AM5th Aug
8AQI
Night time
Avg. Highest Time
8PM5th Aug
48AQI
Avg. Lowest Time
3AM6th Aug
29AQI
In the last 24 hours,
Boston's AQI reached its highest point of 54 at 12 PM during the Day, while the lowest point, 8, was recorded at 6 AM during the Day between 5th Aug and 6th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Boston, Massachusetts, United States
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 2026135 AMAQI
8th Jul 2026146 AMAQI
8th Jul 2026137 AMAQI
8th Jul 2026128 AMAQI
8th Jul 2026129 AMAQI
8th Jul 20261710 AMAQI
8th Jul 20261411 AMAQI
8th Jul 20261512 PMAQI
8th Jul 2026141 PMAQI
8th Jul 2026192 PMAQI
8th Jul 2026273 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026285 PMAQI
8th Jul 2026176 PMAQI
8th Jul 2026167 PMAQI
8th Jul 2026168 PMAQI
8th Jul 2026159 PMAQI
8th Jul 20261610 PMAQI
8th Jul 20261611 PMAQI
9th Jul 20261512 AMAQI
9th Jul 2026141 AMAQI
9th Jul 2026142 AMAQI
9th Jul 2026223 AMAQI
9th Jul 2026124 AMAQI
21°C17/27°C
9th Jul 2026185 AMAQI
9th Jul 2026126 AMAQI
9th Jul 2026127 AMAQI
9th Jul 2026248 AMAQI
9th Jul 2026139 AMAQI
9th Jul 20262210 AMAQI
9th Jul 20261311 AMAQI
9th Jul 20261312 PMAQI
9th Jul 2026141 PMAQI
9th Jul 2026162 PMAQI
9th Jul 2026123 PMAQI
9th Jul 2026184 PMAQI
9th Jul 2026125 PMAQI
9th Jul 2026136 PMAQI
9th Jul 2026157 PMAQI
9th Jul 2026138 PMAQI
9th Jul 2026229 PMAQI
9th Jul 20261410 PMAQI
9th Jul 20261611 PMAQI
10th Jul 20261212 AMAQI
10th Jul 2026101 AMAQI
10th Jul 2026212 AMAQI
10th Jul 2026223 AMAQI
10th Jul 2026254 AMAQI
27°C18/34°C
10th Jul 2026255 AMAQI
10th Jul 2026206 AMAQI
10th Jul 2026267 AMAQI
10th Jul 202698 AMAQI
10th Jul 2026169 AMAQI
10th Jul 20261010 AMAQI
10th Jul 20261011 AMAQI
10th Jul 20261412 PMAQI
10th Jul 2026191 PMAQI
10th Jul 2026172 PMAQI
10th Jul 2026153 PMAQI
10th Jul 2026154 PMAQI
10th Jul 2026135 PMAQI
10th Jul 2026166 PMAQI
10th Jul 2026207 PMAQI
10th Jul 2026168 PMAQI
10th Jul 2026129 PMAQI
10th Jul 20261110 PMAQI
10th Jul 20261011 PMAQI
11th Jul 20261012 AMAQI
11th Jul 202691 AMAQI
11th Jul 2026302 AMAQI
11th Jul 2026133 AMAQI
11th Jul 2026144 AMAQI
26°C21/33°C
11th Jul 2026155 AMAQI
11th Jul 2026166 AMAQI
11th Jul 2026187 AMAQI
11th Jul 2026188 AMAQI
11th Jul 2026189 AMAQI
11th Jul 20262410 AMAQI
11th Jul 20262411 AMAQI
11th Jul 20262412 PMAQI
11th Jul 2026211 PMAQI
11th Jul 2026222 PMAQI
11th Jul 2026213 PMAQI
11th Jul 2026184 PMAQI
11th Jul 2026285 PMAQI
11th Jul 2026176 PMAQI
11th Jul 2026217 PMAQI
11th Jul 2026228 PMAQI
11th Jul 2026189 PMAQI
11th Jul 20262210 PMAQI
11th Jul 20261711 PMAQI
12th Jul 20261612 AMAQI
12th Jul 2026171 AMAQI
12th Jul 2026162 AMAQI
12th Jul 2026173 AMAQI
12th Jul 2026164 AMAQI
24°C18/31°C
12th Jul 2026165 AMAQI
12th Jul 2026156 AMAQI
12th Jul 2026247 AMAQI
12th Jul 2026148 AMAQI
12th Jul 2026139 AMAQI
12th Jul 20261210 AMAQI
12th Jul 20261011 AMAQI
12th Jul 20262012 PMAQI
12th Jul 2026101 PMAQI
12th Jul 202682 PMAQI
12th Jul 202693 PMAQI
12th Jul 202684 PMAQI
12th Jul 202695 PMAQI
12th Jul 202696 PMAQI
12th Jul 202687 PMAQI
12th Jul 2026118 PMAQI
12th Jul 2026199 PMAQI
12th Jul 20261410 PMAQI
12th Jul 20261011 PMAQI
13th Jul 2026912 AMAQI
13th Jul 2026101 AMAQI
13th Jul 2026202 AMAQI
13th Jul 2026103 AMAQI
13th Jul 202694 AMAQI
21°C16/26°C
13th Jul 2026105 AMAQI
13th Jul 2026106 AMAQI
13th Jul 2026107 AMAQI
13th Jul 2026108 AMAQI
13th Jul 2026109 AMAQI
13th Jul 20261210 AMAQI
13th Jul 20261311 AMAQI
13th Jul 20261612 PMAQI
13th Jul 2026241 PMAQI
13th Jul 2026222 PMAQI
13th Jul 2026193 PMAQI
13th Jul 2026184 PMAQI
13th Jul 2026195 PMAQI
13th Jul 2026196 PMAQI
13th Jul 2026297 PMAQI
13th Jul 2026208 PMAQI
13th Jul 2026209 PMAQI
13th Jul 20262210 PMAQI
13th Jul 20262111 PMAQI
14th Jul 20262112 AMAQI
14th Jul 2026161 AMAQI
14th Jul 2026122 AMAQI
14th Jul 2026123 AMAQI
14th Jul 2026124 AMAQI
24°C16/31°C
14th Jul 2026105 AMAQI
14th Jul 2026126 AMAQI
14th Jul 2026247 AMAQI
14th Jul 2026148 AMAQI
14th Jul 2026149 AMAQI
14th Jul 20261810 AMAQI
14th Jul 20261911 AMAQI
14th Jul 20262112 PMAQI
14th Jul 2026211 PMAQI
14th Jul 2026282 PMAQI
14th Jul 2026203 PMAQI
14th Jul 2026234 PMAQI
14th Jul 2026225 PMAQI
14th Jul 2026226 PMAQI
14th Jul 2026207 PMAQI
14th Jul 2026208 PMAQI
14th Jul 2026199 PMAQI
14th Jul 20261910 PMAQI
14th Jul 20261811 PMAQI
15th Jul 20261812 AMAQI
15th Jul 2026181 AMAQI
15th Jul 2026422 AMAQI
15th Jul 2026163 AMAQI
15th Jul 2026244 AMAQI
29°C21/37°C
15th Jul 2026185 AMAQI
15th Jul 2026186 AMAQI
15th Jul 2026287 AMAQI
15th Jul 2026418 AMAQI
15th Jul 2026489 AMAQI
15th Jul 20267810 AMAQI
15th Jul 20266211 AMAQI
15th Jul 20265812 PMAQI
15th Jul 2026601 PMAQI
15th Jul 2026462 PMAQI
15th Jul 2026843 PMAQI
15th Jul 2026704 PMAQI
15th Jul 2026565 PMAQI
15th Jul 2026516 PMAQI
15th Jul 2026507 PMAQI
15th Jul 2026518 PMAQI
15th Jul 2026559 PMAQI
15th Jul 20265610 PMAQI
15th Jul 20265411 PMAQI
16th Jul 20265412 AMAQI
16th Jul 2026521 AMAQI
16th Jul 2026772 AMAQI
16th Jul 2026473 AMAQI
16th Jul 2026484 AMAQI
28°C22/31°C
16th Jul 2026465 AMAQI
16th Jul 2026416 AMAQI
16th Jul 2026397 AMAQI
16th Jul 2026388 AMAQI
16th Jul 2026369 AMAQI
16th Jul 20262810 AMAQI
16th Jul 20263511 AMAQI
16th Jul 20263512 PMAQI
16th Jul 2026311 PMAQI
16th Jul 2026352 PMAQI
16th Jul 2026643 PMAQI
16th Jul 2026774 PMAQI
16th Jul 2026285 PMAQI
16th Jul 2026306 PMAQI
16th Jul 2026527 PMAQI
16th Jul 2026598 PMAQI
16th Jul 2026439 PMAQI
16th Jul 20264310 PMAQI
16th Jul 20264611 PMAQI
17th Jul 20264612 AMAQI
17th Jul 2026481 AMAQI
17th Jul 2026502 AMAQI
17th Jul 2026573 AMAQI
17th Jul 2026504 AMAQI
26°C19/35°C
17th Jul 2026715 AMAQI
17th Jul 2026666 AMAQI
17th Jul 2026627 AMAQI
17th Jul 2026588 AMAQI
17th Jul 2026499 AMAQI
17th Jul 20263810 AMAQI
17th Jul 20263611 AMAQI
17th Jul 20263012 PMAQI
17th Jul 2026371 PMAQI
17th Jul 2026342 PMAQI
17th Jul 2026403 PMAQI
17th Jul 2026474 PMAQI
17th Jul 2026405 PMAQI
17th Jul 2026366 PMAQI
17th Jul 2026247 PMAQI
17th Jul 2026268 PMAQI
17th Jul 2026319 PMAQI
17th Jul 20263310 PMAQI
17th Jul 20263011 PMAQI
18th Jul 20263212 AMAQI
18th Jul 2026431 AMAQI
18th Jul 2026472 AMAQI
18th Jul 2026433 AMAQI
18th Jul 2026464 AMAQI
23°C17/29°C
18th Jul 2026395 AMAQI
18th Jul 2026506 AMAQI
18th Jul 2026487 AMAQI
18th Jul 2026448 AMAQI
18th Jul 2026589 AMAQI
18th Jul 20267710 AMAQI
18th Jul 20269311 AMAQI
18th Jul 20269812 PMAQI
18th Jul 20261221 PMAQI
18th Jul 20261382 PMAQI
18th Jul 20261453 PMAQI
18th Jul 20261474 PMAQI
18th Jul 20261435 PMAQI
18th Jul 20261476 PMAQI
18th Jul 20261517 PMAQI
18th Jul 20261558 PMAQI
18th Jul 20261569 PMAQI
18th Jul 202615010 PMAQI
18th Jul 202615111 PMAQI
19th Jul 202613612 AMAQI
19th Jul 20261071 AMAQI
19th Jul 2026852 AMAQI
19th Jul 2026653 AMAQI
19th Jul 2026594 AMAQI
23°C16/32°C
19th Jul 2026415 AMAQI
19th Jul 2026456 AMAQI
19th Jul 2026457 AMAQI
19th Jul 2026458 AMAQI
19th Jul 2026419 AMAQI
19th Jul 20264410 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20263312 PMAQI
19th Jul 2026251 PMAQI
19th Jul 2026342 PMAQI
19th Jul 2026333 PMAQI
19th Jul 2026284 PMAQI
19th Jul 2026415 PMAQI
19th Jul 2026236 PMAQI
19th Jul 2026427 PMAQI
19th Jul 2026238 PMAQI
19th Jul 2026469 PMAQI
19th Jul 20263810 PMAQI
19th Jul 20264611 PMAQI
20th Jul 20264312 AMAQI
20th Jul 2026501 AMAQI
20th Jul 2026512 AMAQI
20th Jul 2026503 AMAQI
20th Jul 2026254 AMAQI
23°C20/26°C
20th Jul 2026215 AMAQI
20th Jul 2026246 AMAQI
20th Jul 2026217 AMAQI
20th Jul 202698 AMAQI
20th Jul 2026299 AMAQI
20th Jul 20261610 AMAQI
20th Jul 20262311 AMAQI
20th Jul 20261412 PMAQI
20th Jul 2026181 PMAQI
20th Jul 2026162 PMAQI
20th Jul 2026223 PMAQI
20th Jul 2026274 PMAQI
20th Jul 2026215 PMAQI
20th Jul 2026486 PMAQI
20th Jul 2026827 PMAQI
20th Jul 2026558 PMAQI
20th Jul 2026289 PMAQI
20th Jul 20262310 PMAQI
21st Jul 20264412 AMAQI
21st Jul 2026301 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026233 AMAQI
21st Jul 2026504 AMAQI
22°C15/28°C
21st Jul 2026565 AMAQI
21st Jul 2026376 AMAQI
21st Jul 2026477 AMAQI
21st Jul 2026328 AMAQI
21st Jul 2026389 AMAQI
21st Jul 20264610 AMAQI
21st Jul 20264511 AMAQI
21st Jul 20264412 PMAQI
21st Jul 2026451 PMAQI
21st Jul 2026442 PMAQI
21st Jul 2026463 PMAQI
21st Jul 2026454 PMAQI
21st Jul 2026435 PMAQI
21st Jul 2026446 PMAQI
21st Jul 2026477 PMAQI
21st Jul 2026468 PMAQI
21st Jul 2026469 PMAQI
21st Jul 20263710 PMAQI
21st Jul 20263011 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026311 AMAQI
22nd Jul 2026252 AMAQI
22nd Jul 2026273 AMAQI
22nd Jul 2026374 AMAQI
22°C16/31°C
22nd Jul 2026405 AMAQI
22nd Jul 2026406 AMAQI
22nd Jul 2026247 AMAQI
22nd Jul 2026258 AMAQI
22nd Jul 2026279 AMAQI
22nd Jul 20262510 AMAQI
22nd Jul 20262411 AMAQI
22nd Jul 20262412 PMAQI
22nd Jul 2026241 PMAQI
22nd Jul 2026242 PMAQI
22nd Jul 2026253 PMAQI
22nd Jul 2026284 PMAQI
22nd Jul 2026235 PMAQI
22nd Jul 2026246 PMAQI
22nd Jul 2026257 PMAQI
22nd Jul 2026288 PMAQI
22nd Jul 2026239 PMAQI
22nd Jul 20262410 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20263012 AMAQI
23rd Jul 2026181 AMAQI
23rd Jul 2026212 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026194 AMAQI
23°C19/26°C
23rd Jul 2026215 AMAQI
23rd Jul 2026216 AMAQI
23rd Jul 2026137 AMAQI
23rd Jul 202698 AMAQI
23rd Jul 202699 AMAQI
23rd Jul 20261610 AMAQI
23rd Jul 2026811 AMAQI
23rd Jul 20262212 PMAQI
23rd Jul 202691 PMAQI
23rd Jul 2026142 PMAQI
23rd Jul 2026133 PMAQI
23rd Jul 2026154 PMAQI
23rd Jul 2026395 PMAQI
23rd Jul 2026136 PMAQI
23rd Jul 2026217 PMAQI
23rd Jul 2026258 PMAQI
23rd Jul 2026249 PMAQI
23rd Jul 20262410 PMAQI
23rd Jul 20262111 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026303 AMAQI
24th Jul 2026254 AMAQI
20°C15/25°C
24th Jul 2026365 AMAQI
24th Jul 2026396 AMAQI
24th Jul 2026307 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 2026274 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 20263812 AMAQI
25th Jul 2026331 AMAQI
25th Jul 2026302 AMAQI
25th Jul 2026213 AMAQI
25th Jul 2026194 AMAQI
21°C14/29°C
25th Jul 2026325 AMAQI
25th Jul 2026386 AMAQI
25th Jul 2026377 AMAQI
25th Jul 2026348 AMAQI
25th Jul 2026309 AMAQI
25th Jul 20262810 AMAQI
25th Jul 20262411 AMAQI
25th Jul 20262612 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026422 PMAQI
25th Jul 2026283 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 20262511 PMAQI
26th Jul 20262412 AMAQI
26th Jul 2026371 AMAQI
26th Jul 2026302 AMAQI
26th Jul 2026363 AMAQI
26th Jul 2026364 AMAQI
21°C15/28°C
26th Jul 2026215 AMAQI
26th Jul 2026416 AMAQI
26th Jul 2026307 AMAQI
26th Jul 2026318 AMAQI
26th Jul 2026309 AMAQI
26th Jul 20263410 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20263812 PMAQI
26th Jul 2026301 PMAQI
26th Jul 2026232 PMAQI
26th Jul 2026293 PMAQI
26th Jul 2026284 PMAQI
26th Jul 2026365 PMAQI
26th Jul 2026336 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026309 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
18°C12/24°C
27th Jul 2026325 AMAQI
27th Jul 2026286 AMAQI
27th Jul 2026377 AMAQI
27th Jul 2026238 AMAQI
27th Jul 2026349 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20263611 AMAQI
27th Jul 20263412 PMAQI
27th Jul 2026411 PMAQI
27th Jul 2026422 PMAQI
27th Jul 2026363 PMAQI
27th Jul 2026384 PMAQI
27th Jul 2026405 PMAQI
27th Jul 2026386 PMAQI
27th Jul 2026267 PMAQI
27th Jul 2026298 PMAQI
27th Jul 2026239 PMAQI
27th Jul 20263310 PMAQI
27th Jul 20263211 PMAQI
28th Jul 20263212 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026362 AMAQI
28th Jul 2026323 AMAQI
28th Jul 2026404 AMAQI
21°C12/29°C
28th Jul 2026375 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026307 AMAQI
28th Jul 2026338 AMAQI
28th Jul 2026309 AMAQI
28th Jul 20264210 AMAQI
28th Jul 20264211 AMAQI
28th Jul 20264712 PMAQI
28th Jul 2026431 PMAQI
28th Jul 2026452 PMAQI
28th Jul 2026433 PMAQI
28th Jul 2026454 PMAQI
28th Jul 2026435 PMAQI
28th Jul 2026406 PMAQI
28th Jul 2026427 PMAQI
28th Jul 2026398 PMAQI
28th Jul 2026349 PMAQI
28th Jul 20262610 PMAQI
28th Jul 20263411 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026342 AMAQI
29th Jul 2026323 AMAQI
29th Jul 2026164 AMAQI
23°C18/29°C
29th Jul 2026165 AMAQI
29th Jul 2026306 AMAQI
29th Jul 2026187 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026329 AMAQI
29th Jul 20263410 AMAQI
29th Jul 20262411 AMAQI
29th Jul 20262412 PMAQI
29th Jul 2026241 PMAQI
29th Jul 2026222 PMAQI
29th Jul 2026203 PMAQI
29th Jul 2026224 PMAQI
29th Jul 2026505 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026317 PMAQI
29th Jul 2026348 PMAQI
29th Jul 2026469 PMAQI
29th Jul 20264410 PMAQI
29th Jul 20263111 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026191 AMAQI
30th Jul 2026422 AMAQI
30th Jul 2026463 AMAQI
30th Jul 2026354 AMAQI
21°C19/25°C
30th Jul 2026335 AMAQI
30th Jul 2026286 AMAQI
30th Jul 2026247 AMAQI
30th Jul 2026248 AMAQI
30th Jul 2026129 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20261412 PMAQI
30th Jul 2026161 PMAQI
30th Jul 2026142 PMAQI
30th Jul 2026123 PMAQI
30th Jul 2026214 PMAQI
30th Jul 2026105 PMAQI
30th Jul 2026166 PMAQI
30th Jul 2026177 PMAQI
30th Jul 2026288 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20261410 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°C18/21°C
31st Jul 2026255 AMAQI
31st Jul 2026256 AMAQI
31st Jul 2026177 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026239 AMAQI
31st Jul 20262010 AMAQI
31st Jul 20262311 AMAQI
31st Jul 20263012 PMAQI
31st Jul 2026291 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026234 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 20264011 PMAQI
1st Aug 20264712 AMAQI
1st Aug 2026411 AMAQI
1st Aug 2026332 AMAQI
1st Aug 2026343 AMAQI
1st Aug 2026304 AMAQI
21°C17/26°C
1st Aug 2026265 AMAQI
1st Aug 2026346 AMAQI
1st Aug 2026347 AMAQI
1st Aug 2026328 AMAQI
1st Aug 2026329 AMAQI
1st Aug 20263010 AMAQI
1st Aug 20263511 AMAQI
1st Aug 20263812 PMAQI
1st Aug 2026341 PMAQI
1st Aug 2026372 PMAQI
1st Aug 2026393 PMAQI
1st Aug 2026404 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026436 PMAQI
1st Aug 2026397 PMAQI
1st Aug 2026388 PMAQI
1st Aug 2026269 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20263511 PMAQI
2nd Aug 20262512 AMAQI
2nd Aug 2026341 AMAQI
2nd Aug 2026332 AMAQI
2nd Aug 2026373 AMAQI
2nd Aug 2026324 AMAQI
25°C18/33°C
2nd Aug 2026355 AMAQI
2nd Aug 2026336 AMAQI
2nd Aug 2026347 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026399 AMAQI
2nd Aug 20264510 AMAQI
2nd Aug 20262511 AMAQI
2nd Aug 20264012 PMAQI
2nd Aug 2026391 PMAQI
2nd Aug 2026442 PMAQI
2nd Aug 2026453 PMAQI
2nd Aug 2026384 PMAQI
2nd Aug 2026365 PMAQI
2nd Aug 2026366 PMAQI
2nd Aug 2026387 PMAQI
2nd Aug 2026348 PMAQI
2nd Aug 2026249 PMAQI
2nd Aug 20262210 PMAQI
2nd Aug 20262111 PMAQI
3rd Aug 20262512 AMAQI
3rd Aug 2026291 AMAQI
3rd Aug 2026362 AMAQI
3rd Aug 2026273 AMAQI
3rd Aug 2026354 AMAQI
25°C21/30°C
3rd Aug 2026385 AMAQI
3rd Aug 2026366 AMAQI
3rd Aug 2026447 AMAQI
3rd Aug 2026438 AMAQI
3rd Aug 2026449 AMAQI
3rd Aug 20264510 AMAQI
3rd Aug 20264411 AMAQI
3rd Aug 20264112 PMAQI
3rd Aug 2026381 PMAQI
3rd Aug 2026462 PMAQI
3rd Aug 2026393 PMAQI
3rd Aug 2026354 PMAQI
3rd Aug 2026205 PMAQI
3rd Aug 2026226 PMAQI
3rd Aug 2026207 PMAQI
3rd Aug 2026188 PMAQI
3rd Aug 2026249 PMAQI
3rd Aug 20262510 PMAQI
3rd Aug 20262011 PMAQI
4th Aug 20261812 AMAQI
4th Aug 2026181 AMAQI
4th Aug 2026212 AMAQI
4th Aug 2026203 AMAQI
4th Aug 2026194 AMAQI
24°C20/26°C
4th Aug 2026195 AMAQI
4th Aug 2026216 AMAQI
4th Aug 2026187 AMAQI
4th Aug 2026178 AMAQI
4th Aug 2026119 AMAQI
4th Aug 20261010 AMAQI
4th Aug 20261011 AMAQI
4th Aug 20261012 PMAQI
4th Aug 2026211 PMAQI
4th Aug 2026122 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 20261010 PMAQI
4th Aug 20261011 PMAQI
5th Aug 20261912 AMAQI
5th Aug 2026251 AMAQI
5th Aug 202682 AMAQI
5th Aug 2026123 AMAQI
5th Aug 2026214 AMAQI
24°C17/34°C
5th Aug 2026165 AMAQI
5th Aug 202686 AMAQI
5th Aug 2026147 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026119 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20263311 AMAQI
5th Aug 20265412 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026542 PMAQI
5th Aug 2026533 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026356 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026488 PMAQI
5th Aug 2026469 PMAQI
5th Aug 20263610 PMAQI
5th Aug 20264311 PMAQI
6th Aug 20264012 AMAQI
6th Aug 2026431 AMAQI
6th Aug 2026382 AMAQI
6th Aug 2026293 AMAQI
6th Aug 2026444 AMAQI
25°C18/34°C
6th Aug 2026395 AMAQI
5 AM6th Aug 2026346 AMAQI
6th Aug 2026287 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026349 AMAQI
6th Aug 20264810 AMAQI
6th Aug 20263911 AMAQI
6th Aug 20262712 PMAQI
12 PM6th Aug 2026381 PMAQI
6th Aug 2026372 PMAQI
6th Aug 2026363 PMAQI
6th Aug 2026374 PMAQI
6th Aug 2026365 PMAQI
6th Aug 2026306 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026418 PMAQI
8 PM6th Aug 2026469 PMAQI
6th Aug 20264910 PMAQI
6th Aug 20264111 PMAQI
12 AM
4 AM
27°C22/33°C
Day time
Avg. Highest Time
3 PM - 4 PM
36AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM - 9 AM
27AQI
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. 36), while the lowest AQI was between 8 AM to 9 AM (Avg. 27).
Night time
Avg. Highest Time
2 AM
33AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM
29AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 2 AM (Avg. 33), while the lowest AQI was between 3 AM to 3 AM (Avg. 29).
2026 Days Vs Air Quality
Boston, Massachusetts, United States
2026
98%
209
2%
5
Total number of days with different AQI categories in last 218 days in 2026 (147 days remaining)
Good
209 DaysModerate
5 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% of 218 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
Boston, 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
30AQI (US)
30AQI (US)
2nd January 2026
28AQI (US)
28AQI (US)
3rd January 2026
21AQI (US)
21AQI (US)
4th January 2026
25AQI (US)
25AQI (US)
5th January 2026
25AQI (US)
25AQI (US)
6th January 2026
52AQI (US)
52AQI (US)
7th January 2026
39AQI (US)
39AQI (US)
8th January 2026
27AQI (US)
27AQI (US)
9th January 2026
30AQI (US)
30AQI (US)
10th January 2026
18AQI (US)
18AQI (US)
11th January 2026
15AQI (US)
15AQI (US)
12th January 2026
16AQI (US)
16AQI (US)
13th January 2026
28AQI (US)
28AQI (US)
14th January 2026
38AQI (US)
38AQI (US)
15th January 2026
45AQI (US)
45AQI (US)
16th January 2026
12AQI (US)
12AQI (US)
17th January 2026
29AQI (US)
29AQI (US)
18th January 2026
55AQI (US)
55AQI (US)
19th January 2026
36AQI (US)
36AQI (US)
20th January 2026
42AQI (US)
42AQI (US)
21st January 2026
34AQI (US)
34AQI (US)
22nd January 2026
38AQI (US)
38AQI (US)
23rd January 2026
38AQI (US)
38AQI (US)
24th January 2026
39AQI (US)
39AQI (US)
25th January 2026
46AQI (US)
46AQI (US)
26th January 2026
47AQI (US)
47AQI (US)
27th January 2026
42AQI (US)
42AQI (US)
28th January 2026
22AQI (US)
22AQI (US)
29th January 2026
26AQI (US)
26AQI (US)
30th January 2026
43AQI (US)
43AQI (US)
31st January 2026
31AQI (US)
31AQI (US)
1st February 2026
28AQI (US)
28AQI (US)
2nd February 2026
32AQI (US)
32AQI (US)
3rd February 2026
30AQI (US)
30AQI (US)
4th February 2026
30AQI (US)
30AQI (US)
5th February 2026
39AQI (US)
39AQI (US)
6th February 2026
33AQI (US)
33AQI (US)
7th February 2026
24AQI (US)
24AQI (US)
8th February 2026
25AQI (US)
25AQI (US)
9th February 2026
34AQI (US)
34AQI (US)
10th February 2026
44AQI (US)
44AQI (US)
11th February 2026
24AQI (US)
24AQI (US)
12th February 2026
37AQI (US)
37AQI (US)
13th February 2026
36AQI (US)
36AQI (US)
14th February 2026
36AQI (US)
36AQI (US)
15th February 2026
26AQI (US)
26AQI (US)
16th February 2026
35AQI (US)
35AQI (US)
17th February 2026
30AQI (US)
30AQI (US)
18th February 2026
38AQI (US)
38AQI (US)
19th February 2026
39AQI (US)
39AQI (US)
20th February 2026
23AQI (US)
23AQI (US)
21st February 2026
35AQI (US)
35AQI (US)
22nd February 2026
25AQI (US)
25AQI (US)
23rd February 2026
36AQI (US)
36AQI (US)
24th February 2026
44AQI (US)
44AQI (US)
25th February 2026
35AQI (US)
35AQI (US)
26th February 2026
21AQI (US)
21AQI (US)
27th February 2026
26AQI (US)
26AQI (US)
28th February 2026
22AQI (US)
22AQI (US)
1st March 2026
26AQI (US)
26AQI (US)
2nd March 2026
40AQI (US)
40AQI (US)
3rd March 2026
24AQI (US)
24AQI (US)
4th March 2026
36AQI (US)
36AQI (US)
5th March 2026
28AQI (US)
28AQI (US)
6th March 2026
18AQI (US)
18AQI (US)
7th March 2026
32AQI (US)
32AQI (US)
8th March 2026
22AQI (US)
22AQI (US)
9th March 2026
28AQI (US)
28AQI (US)
10th March 2026
24AQI (US)
24AQI (US)
11th March 2026
29AQI (US)
29AQI (US)
12th March 2026
20AQI (US)
20AQI (US)
13th March 2026
27AQI (US)
27AQI (US)
14th March 2026
26AQI (US)
26AQI (US)
15th March 2026
36AQI (US)
36AQI (US)
16th March 2026
26AQI (US)
26AQI (US)
17th March 2026
30AQI (US)
30AQI (US)
18th March 2026
29AQI (US)
29AQI (US)
19th March 2026
28AQI (US)
28AQI (US)
20th March 2026
28AQI (US)
28AQI (US)
21st March 2026
28AQI (US)
28AQI (US)
22nd March 2026
22AQI (US)
22AQI (US)
23rd March 2026
40AQI (US)
40AQI (US)
24th March 2026
26AQI (US)
26AQI (US)
25th March 2026
22AQI (US)
22AQI (US)
26th March 2026
18AQI (US)
18AQI (US)
27th March 2026
24AQI (US)
24AQI (US)
28th March 2026
34AQI (US)
34AQI (US)
29th March 2026
26AQI (US)
26AQI (US)
30th March 2026
18AQI (US)
18AQI (US)
31st March 2026
26AQI (US)
26AQI (US)
1st April 2026
28AQI (US)
28AQI (US)
2nd April 2026
20AQI (US)
20AQI (US)
3rd April 2026
20AQI (US)
20AQI (US)
4th April 2026
24AQI (US)
24AQI (US)
5th April 2026
28AQI (US)
28AQI (US)
6th April 2026
30AQI (US)
30AQI (US)
7th April 2026
26AQI (US)
26AQI (US)
8th April 2026
28AQI (US)
28AQI (US)
9th April 2026
20AQI (US)
20AQI (US)
10th April 2026
23AQI (US)
23AQI (US)
11th April 2026
29AQI (US)
29AQI (US)
12th April 2026
30AQI (US)
30AQI (US)
13th April 2026
23AQI (US)
23AQI (US)
14th April 2026
21AQI (US)
21AQI (US)
15th April 2026
17AQI (US)
17AQI (US)
16th April 2026
19AQI (US)
19AQI (US)
17th April 2026
18th April 2026
26AQI (US)
26AQI (US)
19th April 2026
34AQI (US)
34AQI (US)
20th April 2026
31AQI (US)
31AQI (US)
21st April 2026
22AQI (US)
22AQI (US)
22nd April 2026
23rd April 2026
18AQI (US)
18AQI (US)
24th April 2026
22AQI (US)
22AQI (US)
25th April 2026
30AQI (US)
30AQI (US)
26th April 2026
34AQI (US)
34AQI (US)
27th April 2026
15AQI (US)
15AQI (US)
28th April 2026
17AQI (US)
17AQI (US)
29th April 2026
17AQI (US)
17AQI (US)
30th April 2026
23AQI (US)
23AQI (US)
1st May 2026
26AQI (US)
26AQI (US)
2nd May 2026
19AQI (US)
19AQI (US)
3rd May 2026
22AQI (US)
22AQI (US)
4th May 2026
26AQI (US)
26AQI (US)
5th May 2026
26AQI (US)
26AQI (US)
6th May 2026
21AQI (US)
21AQI (US)
7th May 2026
26AQI (US)
26AQI (US)
8th May 2026
26AQI (US)
26AQI (US)
9th May 2026
10th May 2026
26AQI (US)
26AQI (US)
11th May 2026
29AQI (US)
29AQI (US)
12th May 2026
27AQI (US)
27AQI (US)
13th May 2026
20AQI (US)
20AQI (US)
14th May 2026
16AQI (US)
16AQI (US)
15th May 2026
43AQI (US)
43AQI (US)
16th May 2026
47AQI (US)
47AQI (US)
17th May 2026
50AQI (US)
50AQI (US)
18th May 2026
55AQI (US)
55AQI (US)
19th May 2026
53AQI (US)
53AQI (US)
20th May 2026
44AQI (US)
44AQI (US)
21st May 2026
39AQI (US)
39AQI (US)
22nd May 2026
34AQI (US)
34AQI (US)
23rd May 2026
41AQI (US)
41AQI (US)
24th May 2026
45AQI (US)
45AQI (US)
25th May 2026
45AQI (US)
45AQI (US)
26th May 2026
20AQI (US)
20AQI (US)
27th May 2026
14AQI (US)
14AQI (US)
28th May 2026
15AQI (US)
15AQI (US)
29th May 2026
17AQI (US)
17AQI (US)
30th May 2026
16AQI (US)
16AQI (US)
31st May 2026
20AQI (US)
20AQI (US)
1st June 2026
14AQI (US)
14AQI (US)
2nd June 2026
14AQI (US)
14AQI (US)
3rd June 2026
16AQI (US)
16AQI (US)
4th June 2026
16AQI (US)
16AQI (US)
5th June 2026
22AQI (US)
22AQI (US)
6th June 2026
26AQI (US)
26AQI (US)
7th June 2026
13AQI (US)
13AQI (US)
8th June 2026
12AQI (US)
12AQI (US)
9th June 2026
15AQI (US)
15AQI (US)
10th June 2026
16AQI (US)
16AQI (US)
11th June 2026
18AQI (US)
18AQI (US)
12th June 2026
17AQI (US)
17AQI (US)
13th June 2026
12AQI (US)
12AQI (US)
14th June 2026
13AQI (US)
13AQI (US)
15th June 2026
14AQI (US)
14AQI (US)
16th June 2026
16AQI (US)
16AQI (US)
17th June 2026
17AQI (US)
17AQI (US)
18th June 2026
18AQI (US)
18AQI (US)
19th June 2026
13AQI (US)
13AQI (US)
20th June 2026
20AQI (US)
20AQI (US)
21st June 2026
19AQI (US)
19AQI (US)
22nd June 2026
15AQI (US)
15AQI (US)
23rd June 2026
16AQI (US)
16AQI (US)
24th June 2026
13AQI (US)
13AQI (US)
25th June 2026
17AQI (US)
17AQI (US)
26th June 2026
12AQI (US)
12AQI (US)
27th June 2026
21AQI (US)
21AQI (US)
28th June 2026
18AQI (US)
18AQI (US)
29th June 2026
16AQI (US)
16AQI (US)
30th June 2026
18AQI (US)
18AQI (US)
1st July 2026
16AQI (US)
16AQI (US)
2nd July 2026
26AQI (US)
26AQI (US)
3rd July 2026
30AQI (US)
30AQI (US)
4th July 2026
28AQI (US)
28AQI (US)
5th July 2026
29AQI (US)
29AQI (US)
6th July 2026
23AQI (US)
23AQI (US)
7th July 2026
14AQI (US)
14AQI (US)
8th July 2026
16AQI (US)
16AQI (US)
9th July 2026
16AQI (US)
16AQI (US)
10th July 2026
16AQI (US)
16AQI (US)
11th July 2026
19AQI (US)
19AQI (US)
12th July 2026
13AQI (US)
13AQI (US)
13th July 2026
16AQI (US)
16AQI (US)
14th July 2026
18AQI (US)
18AQI (US)
15th July 2026
46AQI (US)
46AQI (US)
16th July 2026
45AQI (US)
45AQI (US)
17th July 2026
43AQI (US)
43AQI (US)
18th July 2026
97AQI (US)
97AQI (US)
19th July 2026
48AQI (US)
48AQI (US)
20th July 2026
31AQI (US)
31AQI (US)
21st July 2026
42AQI (US)
42AQI (US)
22nd July 2026
27AQI (US)
27AQI (US)
23rd July 2026
19AQI (US)
19AQI (US)
24th July 2026
26AQI (US)
26AQI (US)
25th July 2026
30AQI (US)
30AQI (US)
26th July 2026
31AQI (US)
31AQI (US)
27th July 2026
32AQI (US)
32AQI (US)
28th July 2026
38AQI (US)
38AQI (US)
29th July 2026
29AQI (US)
29AQI (US)
30th July 2026
24AQI (US)
24AQI (US)
31st July 2026
26AQI (US)
26AQI (US)
1st August 2026
36AQI (US)
36AQI (US)
2nd August 2026
34AQI (US)
34AQI (US)
3rd August 2026
33AQI (US)
33AQI (US)
4th August 2026
16AQI (US)
16AQI (US)
5th August 2026
29AQI (US)
29AQI (US)
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
33AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
30AQI (US)
16AQI (US)
29AQI (US)
30AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202627AQI (US)
29
2
28
31
28
28
2
30
30
1
5
209
5
Highest AQI (US) recorded in
January33AQI (US)
Lowest AQI (US) recorded in
June16AQI (US)
202531AQI (US)
26
5
28
31
29
1
31
16
14
23
8
22
9
30
29
2
29
1
28
3
322
43
Highest AQI (US) recorded in
June45AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202429AQI (US)
28
3
29
31
30
31
30
28
3
24
7
30
31
30
29
2
351
15
Highest AQI (US) recorded in
August38AQI (US)
Lowest AQI (US) recorded in
November24AQI (US)
202334AQI (US)
31
27
1
31
27
3
31
20
10
21
9
1
26
5
23
7
29
2
28
1
30
1
324
39
1
Highest AQI (US) recorded in
July46AQI (US)
Lowest AQI (US) recorded in
November27AQI (US)
202232AQI (US)
24
7
20
1
27
4
17
30
1
29
1
21
2
2
30
31
29
1
28
3
288
20
Highest AQI (US) recorded in
January39AQI (US)
Lowest AQI (US) recorded in
August25AQI (US)
202132AQI (US)
26
3
25
3
31
30
31
26
3
26
5
26
5
30
31
27
3
28
3
337
25
Highest AQI (US) recorded in
June36AQI (US)
Lowest AQI (US) recorded in
October24AQI (US)
202033AQI (US)
5
1
19
18
29
1
30
1
30
1
27
3
31
26
4
26
5
241
16
Highest AQI (US) recorded in
August39AQI (US)
Lowest AQI (US) recorded in
April29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
34AQI (US)Least Polluted Year Recorded
2026(Avg.)
27AQI (US)Boston's annual 2026 AQI (US) (27) shows an average percentage change of -14.9% (improved AQI (US)) compared to previous years: 2020 (33), 2021 (32), 2022 (32), 2023 (34), 2024 (29), 2025 (31).
