Groton, 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
Groton, Connecticut, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
83AQILowest AQI recorded on
20th Aug 2024
14AQISame Day Analysis (9th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2023 on the same day.
Day & Night AQI Trend: 9th Aug - 10th Aug 2026
Groton, Connecticut, United States
AQI
Day
Night
.
5 AM9th Aug 2026
8 PM
4 AM10th Aug 2026
Day time
Avg. Highest Time
7PM9th Aug
48AQI
Avg. Lowest Time
5AM9th Aug
31AQI
Night time
Avg. Highest Time
8PM9th Aug
44AQI
Avg. Lowest Time
3AM10th Aug
25AQI
In the last 24 hours,
Groton's AQI reached its highest point of 48 at 7 PM during the Day, while the lowest point, 25, was recorded at 3 AM during the Night between 9th Aug and 10th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Groton, Connecticut, United States
JulAug
12th - 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 - 07th07th - 08th08th - 09th09th - 10th10th
Day
Night
12th Jul 2026275 AMAQI
12th Jul 2026166 AMAQI
12th Jul 2026367 AMAQI
12th Jul 2026228 AMAQI
12th Jul 2026159 AMAQI
12th Jul 20262010 AMAQI
12th Jul 20263111 AMAQI
12th Jul 20262412 PMAQI
12th Jul 2026201 PMAQI
12th Jul 2026142 PMAQI
12th Jul 2026163 PMAQI
12th Jul 2026184 PMAQI
12th Jul 2026145 PMAQI
12th Jul 2026166 PMAQI
12th Jul 2026187 PMAQI
12th Jul 2026148 PMAQI
12th Jul 2026219 PMAQI
12th Jul 20262010 PMAQI
12th Jul 20262111 PMAQI
13th Jul 20261812 AMAQI
13th Jul 2026111 AMAQI
13th Jul 2026202 AMAQI
13th Jul 2026193 AMAQI
13th Jul 2026184 AMAQI
23°C16/32°C
13th Jul 2026235 AMAQI
13th Jul 2026206 AMAQI
13th Jul 2026107 AMAQI
13th Jul 2026188 AMAQI
13th Jul 2026189 AMAQI
13th Jul 20261010 AMAQI
13th Jul 20261811 AMAQI
13th Jul 20261812 PMAQI
13th Jul 2026221 PMAQI
13th Jul 2026332 PMAQI
13th Jul 2026183 PMAQI
13th Jul 2026124 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026126 PMAQI
13th Jul 2026317 PMAQI
13th Jul 2026248 PMAQI
13th Jul 2026299 PMAQI
13th Jul 20261210 PMAQI
13th Jul 20261311 PMAQI
14th Jul 20262912 AMAQI
14th Jul 2026201 AMAQI
14th Jul 2026182 AMAQI
14th Jul 2026293 AMAQI
14th Jul 2026204 AMAQI
23°C16/31°C
14th Jul 2026185 AMAQI
14th Jul 2026126 AMAQI
14th Jul 2026237 AMAQI
14th Jul 2026238 AMAQI
14th Jul 2026129 AMAQI
14th Jul 20261210 AMAQI
14th Jul 20261411 AMAQI
14th Jul 20261512 PMAQI
14th Jul 2026161 PMAQI
14th Jul 2026282 PMAQI
14th Jul 2026183 PMAQI
14th Jul 2026184 PMAQI
14th Jul 2026205 PMAQI
14th Jul 2026276 PMAQI
14th Jul 2026207 PMAQI
14th Jul 2026298 PMAQI
14th Jul 2026269 PMAQI
14th Jul 20262210 PMAQI
14th Jul 20262211 PMAQI
15th Jul 20262012 AMAQI
15th Jul 2026221 AMAQI
15th Jul 2026202 AMAQI
15th Jul 2026343 AMAQI
15th Jul 2026324 AMAQI
27°C21/34°C
15th Jul 2026365 AMAQI
15th Jul 2026346 AMAQI
15th Jul 2026327 AMAQI
15th Jul 2026188 AMAQI
15th Jul 2026209 AMAQI
15th Jul 20262010 AMAQI
15th Jul 20264411 AMAQI
15th Jul 20267612 PMAQI
15th Jul 2026501 PMAQI
15th Jul 2026262 PMAQI
15th Jul 2026543 PMAQI
15th Jul 2026554 PMAQI
15th Jul 2026845 PMAQI
15th Jul 2026796 PMAQI
15th Jul 2026567 PMAQI
15th Jul 2026468 PMAQI
15th Jul 2026769 PMAQI
15th Jul 20264610 PMAQI
15th Jul 20264411 PMAQI
16th Jul 20265212 AMAQI
16th Jul 2026401 AMAQI
16th Jul 2026682 AMAQI
16th Jul 2026343 AMAQI
16th Jul 2026364 AMAQI
28°C22/35°C
16th Jul 2026405 AMAQI
16th Jul 2026426 AMAQI
16th Jul 2026367 AMAQI
16th Jul 2026388 AMAQI
16th Jul 2026369 AMAQI
16th Jul 20264010 AMAQI
16th Jul 20263211 AMAQI
16th Jul 20263212 PMAQI
16th Jul 2026401 PMAQI
16th Jul 2026322 PMAQI
16th Jul 2026603 PMAQI
16th Jul 2026704 PMAQI
16th Jul 2026425 PMAQI
16th Jul 2026406 PMAQI
16th Jul 2026777 PMAQI
16th Jul 2026908 PMAQI
16th Jul 2026889 PMAQI
16th Jul 20269210 PMAQI
16th Jul 20268011 PMAQI
17th Jul 202611512 AMAQI
17th Jul 2026911 AMAQI
17th Jul 2026932 AMAQI
17th Jul 20261023 AMAQI
17th Jul 2026924 AMAQI
26°C20/33°C
17th Jul 20261555 AMAQI
17th Jul 20261526 AMAQI
17th Jul 20261327 AMAQI
17th Jul 20261208 AMAQI
17th Jul 20261139 AMAQI
17th Jul 20269510 AMAQI
17th Jul 20267811 AMAQI
17th Jul 20266612 PMAQI
17th Jul 2026621 PMAQI
17th Jul 2026542 PMAQI
17th Jul 2026503 PMAQI
17th Jul 2026424 PMAQI
17th Jul 2026385 PMAQI
17th Jul 2026346 PMAQI
17th Jul 2026407 PMAQI
17th Jul 2026408 PMAQI
17th Jul 2026369 PMAQI
17th Jul 20263810 PMAQI
17th Jul 20264211 PMAQI
18th Jul 20264812 AMAQI
18th Jul 2026491 AMAQI
18th Jul 2026552 AMAQI
18th Jul 2026573 AMAQI
18th Jul 2026554 AMAQI
25°C17/32°C
18th Jul 2026545 AMAQI
18th Jul 2026576 AMAQI
18th Jul 2026587 AMAQI
18th Jul 2026628 AMAQI
18th Jul 2026769 AMAQI
18th Jul 20268210 AMAQI
18th Jul 20268611 AMAQI
18th Jul 202610712 PMAQI
18th Jul 20261191 PMAQI
18th Jul 20261302 PMAQI
18th Jul 20261403 PMAQI
18th Jul 20261544 PMAQI
18th Jul 20261585 PMAQI
18th Jul 20261586 PMAQI
18th Jul 20261607 PMAQI
18th Jul 20261568 PMAQI
18th Jul 20261569 PMAQI
18th Jul 202615510 PMAQI
18th Jul 202612211 PMAQI
19th Jul 202610812 AMAQI
19th Jul 2026581 AMAQI
19th Jul 2026502 AMAQI
19th Jul 2026493 AMAQI
19th Jul 2026444 AMAQI
22°C18/30°C
19th Jul 2026365 AMAQI
19th Jul 2026366 AMAQI
19th Jul 2026447 AMAQI
19th Jul 2026468 AMAQI
19th Jul 2026469 AMAQI
19th Jul 20264410 AMAQI
19th Jul 20263311 AMAQI
19th Jul 20264412 PMAQI
19th Jul 2026341 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026463 PMAQI
19th Jul 2026384 PMAQI
19th Jul 2026385 PMAQI
19th Jul 2026336 PMAQI
19th Jul 2026407 PMAQI
19th Jul 2026388 PMAQI
19th Jul 2026369 PMAQI
19th Jul 20263810 PMAQI
19th Jul 20264511 PMAQI
20th Jul 20264612 AMAQI
20th Jul 2026381 AMAQI
20th Jul 2026362 AMAQI
20th Jul 2026383 AMAQI
20th Jul 2026334 AMAQI
23°C18/28°C
20th Jul 2026305 AMAQI
20th Jul 2026366 AMAQI
20th Jul 2026307 AMAQI
20th Jul 2026388 AMAQI
20th Jul 2026239 AMAQI
20th Jul 20261310 AMAQI
20th Jul 20262511 AMAQI
20th Jul 20261512 PMAQI
20th Jul 2026191 PMAQI
20th Jul 2026212 PMAQI
20th Jul 2026253 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026215 PMAQI
20th Jul 2026426 PMAQI
20th Jul 2026387 PMAQI
20th Jul 2026368 PMAQI
20th Jul 2026309 PMAQI
20th Jul 20263310 PMAQI
21st Jul 20263012 AMAQI
21st Jul 2026251 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026253 AMAQI
21st Jul 2026404 AMAQI
20°C15/28°C
21st Jul 2026365 AMAQI
21st Jul 2026306 AMAQI
21st Jul 2026417 AMAQI
21st Jul 2026428 AMAQI
21st Jul 2026429 AMAQI
21st Jul 20264610 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20264212 PMAQI
21st Jul 2026401 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026513 PMAQI
21st Jul 2026444 PMAQI
21st Jul 2026485 PMAQI
21st Jul 2026446 PMAQI
21st Jul 2026467 PMAQI
21st Jul 2026428 PMAQI
21st Jul 2026429 PMAQI
21st Jul 20263310 PMAQI
21st Jul 20263811 PMAQI
22nd Jul 20264812 AMAQI
22nd Jul 2026571 AMAQI
22nd Jul 2026582 AMAQI
22nd Jul 2026543 AMAQI
22nd Jul 2026514 AMAQI
21°C17/26°C
22nd Jul 2026405 AMAQI
22nd Jul 2026336 AMAQI
22nd Jul 2026257 AMAQI
22nd Jul 2026218 AMAQI
22nd Jul 2026299 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20262311 AMAQI
22nd Jul 20262512 PMAQI
22nd Jul 2026251 PMAQI
22nd Jul 2026362 PMAQI
22nd Jul 2026333 PMAQI
22nd Jul 2026274 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026336 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026449 PMAQI
22nd Jul 20262510 PMAQI
22nd Jul 20263811 PMAQI
23rd Jul 20263212 AMAQI
23rd Jul 2026121 AMAQI
23rd Jul 2026212 AMAQI
23rd Jul 2026213 AMAQI
23rd Jul 2026224 AMAQI
24°C20/30°C
23rd Jul 2026215 AMAQI
23rd Jul 2026226 AMAQI
23rd Jul 2026157 AMAQI
23rd Jul 202688 AMAQI
23rd Jul 202689 AMAQI
23rd Jul 20264610 AMAQI
23rd Jul 2026811 AMAQI
23rd Jul 20265112 PMAQI
23rd Jul 2026161 PMAQI
23rd Jul 2026212 PMAQI
23rd Jul 2026183 PMAQI
23rd Jul 2026224 PMAQI
23rd Jul 2026295 PMAQI
23rd Jul 2026166 PMAQI
23rd Jul 2026227 PMAQI
23rd Jul 2026348 PMAQI
23rd Jul 2026299 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20262511 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026211 AMAQI
24th Jul 2026212 AMAQI
24th Jul 2026313 AMAQI
24th Jul 2026234 AMAQI
21°C16/28°C
24th Jul 2026275 AMAQI
24th Jul 2026296 AMAQI
24th Jul 2026367 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026229 AMAQI
24th Jul 20262510 AMAQI
24th Jul 20262611 AMAQI
24th Jul 20262112 PMAQI
24th Jul 2026251 PMAQI
24th Jul 2026422 PMAQI
24th Jul 2026263 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026385 PMAQI
24th Jul 2026256 PMAQI
24th Jul 202687 PMAQI
24th Jul 2026118 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20262510 PMAQI
24th Jul 20262311 PMAQI
25th Jul 20263812 AMAQI
25th Jul 2026381 AMAQI
25th Jul 2026272 AMAQI
25th Jul 2026253 AMAQI
25th Jul 2026274 AMAQI
21°C15/29°C
25th Jul 2026295 AMAQI
25th Jul 2026406 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026408 AMAQI
25th Jul 2026309 AMAQI
25th Jul 20263810 AMAQI
25th Jul 20262311 AMAQI
25th Jul 20262512 PMAQI
25th Jul 2026231 PMAQI
25th Jul 2026322 PMAQI
25th Jul 2026253 PMAQI
25th Jul 2026404 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026386 PMAQI
25th Jul 2026387 PMAQI
25th Jul 2026188 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20263111 PMAQI
26th Jul 20263612 AMAQI
26th Jul 2026421 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026404 AMAQI
21°C14/30°C
26th Jul 2026255 AMAQI
26th Jul 2026426 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026388 AMAQI
26th Jul 2026349 AMAQI
26th Jul 20263210 AMAQI
26th Jul 20261511 AMAQI
26th Jul 20263412 PMAQI
26th Jul 2026361 PMAQI
26th Jul 2026212 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026325 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026298 PMAQI
26th Jul 2026349 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20263211 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026293 AMAQI
27th Jul 2026304 AMAQI
21°C13/30°C
27th Jul 2026325 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026347 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026409 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20263811 AMAQI
27th Jul 20263812 PMAQI
27th Jul 2026481 PMAQI
27th Jul 2026472 PMAQI
27th Jul 2026383 PMAQI
27th Jul 2026344 PMAQI
27th Jul 2026305 PMAQI
27th Jul 2026346 PMAQI
27th Jul 2026407 PMAQI
27th Jul 2026328 PMAQI
27th Jul 2026329 PMAQI
27th Jul 20263210 PMAQI
27th Jul 20263011 PMAQI
28th Jul 20264012 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026322 AMAQI
28th Jul 2026383 AMAQI
28th Jul 2026364 AMAQI
21°C15/28°C
28th Jul 2026345 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026427 AMAQI
28th Jul 2026328 AMAQI
28th Jul 2026349 AMAQI
28th Jul 20263610 AMAQI
28th Jul 20263411 AMAQI
28th Jul 20263812 PMAQI
28th Jul 2026381 PMAQI
28th Jul 2026402 PMAQI
28th Jul 2026403 PMAQI
28th Jul 2026364 PMAQI
28th Jul 2026365 PMAQI
28th Jul 2026386 PMAQI
28th Jul 2026347 PMAQI
28th Jul 2026348 PMAQI
28th Jul 2026319 PMAQI
28th Jul 20263810 PMAQI
28th Jul 20263611 PMAQI
29th Jul 20263412 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026222 AMAQI
29th Jul 2026183 AMAQI
29th Jul 2026184 AMAQI
23°C20/28°C
29th Jul 2026205 AMAQI
29th Jul 2026306 AMAQI
29th Jul 2026207 AMAQI
29th Jul 2026208 AMAQI
29th Jul 2026199 AMAQI
29th Jul 20262010 AMAQI
29th Jul 20262311 AMAQI
29th Jul 20261812 PMAQI
29th Jul 2026321 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026523 PMAQI
29th Jul 2026334 PMAQI
29th Jul 2026525 PMAQI
29th Jul 2026516 PMAQI
29th Jul 2026507 PMAQI
29th Jul 2026448 PMAQI
29th Jul 2026529 PMAQI
29th Jul 20264610 PMAQI
29th Jul 20264211 PMAQI
30th Jul 20264612 AMAQI
30th Jul 2026331 AMAQI
30th Jul 2026402 AMAQI
30th Jul 2026423 AMAQI
30th Jul 2026424 AMAQI
21°C20/24°C
30th Jul 2026315 AMAQI
30th Jul 2026226 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026168 AMAQI
30th Jul 2026189 AMAQI
30th Jul 20262510 AMAQI
30th Jul 20262411 AMAQI
30th Jul 20262112 PMAQI
30th Jul 2026221 PMAQI
30th Jul 202682 PMAQI
30th Jul 2026143 PMAQI
30th Jul 2026244 PMAQI
30th Jul 202685 PMAQI
30th Jul 2026206 PMAQI
30th Jul 2026227 PMAQI
30th Jul 2026268 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20261710 PMAQI
30th Jul 20262111 PMAQI
31st Jul 20262112 AMAQI
31st Jul 2026161 AMAQI
31st Jul 2026212 AMAQI
31st Jul 2026253 AMAQI
31st Jul 2026364 AMAQI
21°C20/25°C
31st Jul 2026245 AMAQI
31st Jul 2026236 AMAQI
31st Jul 2026227 AMAQI
31st Jul 2026238 AMAQI
31st Jul 2026219 AMAQI
31st Jul 20262110 AMAQI
31st Jul 20262111 AMAQI
31st Jul 20262112 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026252 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026254 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026277 PMAQI
31st Jul 2026238 PMAQI
31st Jul 2026279 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20263011 PMAQI
1st Aug 20264412 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026382 AMAQI
1st Aug 2026423 AMAQI
1st Aug 2026404 AMAQI
23°C17/30°C
1st Aug 2026385 AMAQI
1st Aug 2026466 AMAQI
1st Aug 2026387 AMAQI
1st Aug 2026368 AMAQI
1st Aug 2026369 AMAQI
1st Aug 20264010 AMAQI
1st Aug 20264411 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026381 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026293 PMAQI
1st Aug 2026344 PMAQI
1st Aug 2026365 PMAQI
1st Aug 2026386 PMAQI
1st Aug 2026487 PMAQI
1st Aug 2026448 PMAQI
1st Aug 2026349 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20262511 PMAQI
2nd Aug 20262312 AMAQI
2nd Aug 2026251 AMAQI
2nd Aug 2026232 AMAQI
2nd Aug 2026383 AMAQI
2nd Aug 2026234 AMAQI
24°C19/31°C
2nd Aug 2026405 AMAQI
2nd Aug 2026276 AMAQI
2nd Aug 2026337 AMAQI
2nd Aug 2026408 AMAQI
2nd Aug 2026349 AMAQI
2nd Aug 20264410 AMAQI
2nd Aug 20262911 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026401 PMAQI
2nd Aug 2026462 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026384 PMAQI
2nd Aug 2026385 PMAQI
2nd Aug 2026406 PMAQI
2nd Aug 2026387 PMAQI
2nd Aug 2026328 PMAQI
2nd Aug 2026239 PMAQI
2nd Aug 20263810 PMAQI
2nd Aug 20262111 PMAQI
3rd Aug 20262712 AMAQI
3rd Aug 2026291 AMAQI
3rd Aug 2026342 AMAQI
3rd Aug 2026273 AMAQI
3rd Aug 2026424 AMAQI
24°C21/29°C
3rd Aug 2026525 AMAQI
3rd Aug 2026536 AMAQI
3rd Aug 2026547 AMAQI
3rd Aug 2026528 AMAQI
3rd Aug 2026549 AMAQI
3rd Aug 20264610 AMAQI
3rd Aug 20264011 AMAQI
3rd Aug 20263612 PMAQI
3rd Aug 2026361 PMAQI
3rd Aug 2026382 PMAQI
3rd Aug 2026403 PMAQI
3rd Aug 2026294 PMAQI
3rd Aug 2026205 PMAQI
3rd Aug 2026406 PMAQI
3rd Aug 2026527 PMAQI
3rd Aug 2026438 PMAQI
3rd Aug 2026409 PMAQI
3rd Aug 20264010 PMAQI
3rd Aug 20262611 PMAQI
4th Aug 20262612 AMAQI
4th Aug 2026261 AMAQI
4th Aug 2026322 AMAQI
4th Aug 2026163 AMAQI
4th Aug 2026144 AMAQI
24°C20/26°C
4th Aug 2026145 AMAQI
4th Aug 2026106 AMAQI
4th Aug 2026157 AMAQI
4th Aug 2026198 AMAQI
4th Aug 2026209 AMAQI
4th Aug 20261410 AMAQI
4th Aug 20261611 AMAQI
4th Aug 20261812 PMAQI
4th Aug 2026231 PMAQI
4th Aug 2026302 PMAQI
4th Aug 2026363 PMAQI
4th Aug 2026264 PMAQI
4th Aug 2026385 PMAQI
4th Aug 2026166 PMAQI
4th Aug 2026367 PMAQI
4th Aug 2026218 PMAQI
4th Aug 2026109 PMAQI
4th Aug 20261910 PMAQI
4th Aug 20262211 PMAQI
5th Aug 20262212 AMAQI
5th Aug 2026251 AMAQI
5th Aug 2026292 AMAQI
5th Aug 2026203 AMAQI
5th Aug 2026234 AMAQI
22°C17/29°C
5th Aug 2026325 AMAQI
5th Aug 2026466 AMAQI
5th Aug 2026327 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026429 AMAQI
5th Aug 20262710 AMAQI
5th Aug 20262111 AMAQI
5th Aug 20264012 PMAQI
5th Aug 2026281 PMAQI
5th Aug 2026542 PMAQI
5th Aug 2026543 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026275 PMAQI
5th Aug 2026336 PMAQI
5th Aug 2026237 PMAQI
5th Aug 2026488 PMAQI
5th Aug 2026389 PMAQI
5th Aug 20263210 PMAQI
5th Aug 20264511 PMAQI
6th Aug 20262312 AMAQI
6th Aug 2026401 AMAQI
6th Aug 2026212 AMAQI
6th Aug 2026293 AMAQI
6th Aug 2026444 AMAQI
22°C17/29°C
6th Aug 2026425 AMAQI
6th Aug 2026366 AMAQI
6th Aug 2026237 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026469 AMAQI
6th Aug 20264010 AMAQI
6th Aug 20264411 AMAQI
6th Aug 20264012 PMAQI
6th Aug 2026441 PMAQI
6th Aug 2026422 PMAQI
6th Aug 2026403 PMAQI
6th Aug 2026424 PMAQI
6th Aug 2026425 PMAQI
6th Aug 2026406 PMAQI
6th Aug 2026447 PMAQI
6th Aug 2026388 PMAQI
6th Aug 2026409 PMAQI
6th Aug 20264210 PMAQI
6th Aug 20264011 PMAQI
7th Aug 20264012 AMAQI
7th Aug 2026381 AMAQI
7th Aug 2026402 AMAQI
7th Aug 2026423 AMAQI
7th Aug 2026404 AMAQI
26°C23/30°C
7th Aug 2026445 AMAQI
7th Aug 2026406 AMAQI
7th Aug 2026427 AMAQI
7th Aug 2026408 AMAQI
7th Aug 2026429 AMAQI
7th Aug 20264410 AMAQI
7th Aug 20264211 AMAQI
7th Aug 20262312 PMAQI
7th Aug 2026251 PMAQI
7th Aug 2026422 PMAQI
7th Aug 2026463 PMAQI
7th Aug 2026364 PMAQI
7th Aug 2026235 PMAQI
7th Aug 2026306 PMAQI
7th Aug 2026297 PMAQI
7th Aug 2026238 PMAQI
7th Aug 2026299 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20263811 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026252 AMAQI
8th Aug 2026383 AMAQI
8th Aug 2026344 AMAQI
28°C23/35°C
8th Aug 2026255 AMAQI
8th Aug 2026256 AMAQI
8th Aug 2026237 AMAQI
8th Aug 2026138 AMAQI
8th Aug 2026259 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20262511 AMAQI
8th Aug 20262112 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026253 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026275 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026257 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026299 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262911 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026381 AMAQI
9th Aug 2026332 AMAQI
9th Aug 2026273 AMAQI
9th Aug 2026274 AMAQI
27°C21/34°C
9th Aug 2026315 AMAQI
9th Aug 2026406 AMAQI
9th Aug 2026407 AMAQI
9th Aug 2026448 AMAQI
9th Aug 2026429 AMAQI
9th Aug 20264010 AMAQI
9th Aug 20263811 AMAQI
9th Aug 20264412 PMAQI
9th Aug 2026381 PMAQI
9th Aug 2026422 PMAQI
9th Aug 2026443 PMAQI
9th Aug 2026464 PMAQI
9th Aug 2026465 PMAQI
9th Aug 2026446 PMAQI
9th Aug 2026487 PMAQI
9th Aug 2026448 PMAQI
9th Aug 2026449 PMAQI
9th Aug 20264410 PMAQI
9th Aug 20264211 PMAQI
10th Aug 20264012 AMAQI
10th Aug 2026361 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026253 AMAQI
10th Aug 2026294 AMAQI
27°C23/33°C
10th Aug 2026255 AMAQI
5 AM10th Aug 2026256 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026298 AMAQI
10th Aug 2026279 AMAQI
10th Aug 20262310 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20262512 PMAQI
12 PM10th Aug 2026251 PMAQI
10th Aug 2026252 PMAQI
10th Aug 2026333 PMAQI
10th Aug 2026294 PMAQI
10th Aug 2026255 PMAQI
10th Aug 2026236 PMAQI
10th Aug 2026257 PMAQI
10th Aug 2026238 PMAQI
8 PM12 AM
4 AM
25°C18/33°C
Day time
Avg. Highest Time
7 PM
40AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
11 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 40), while the lowest AQI was between 11 AM to 11 AM (Avg. 32).
Night time
Avg. Highest Time
9 PM
40AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
1 AM - 4 AM
34AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 9 PM (Avg. 40), while the lowest AQI was between 1 AM to 4 AM (Avg. 34).
2026 Days Vs Air Quality
Groton, Connecticut, United States
2026
98%
213
2%
4
0.4%
1
Total number of days with different AQI categories in last 222 days in 2026 (143 days remaining)
Good
213 DaysModerate
4 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% of 222 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
Groton, Connecticut, 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
19AQI (US)
19AQI (US)
2nd January 2026
18AQI (US)
18AQI (US)
3rd January 2026
24AQI (US)
24AQI (US)
4th January 2026
21AQI (US)
21AQI (US)
5th January 2026
21AQI (US)
21AQI (US)
6th January 2026
44AQI (US)
44AQI (US)
7th January 2026
30AQI (US)
30AQI (US)
8th January 2026
18AQI (US)
18AQI (US)
9th January 2026
25AQI (US)
25AQI (US)
10th January 2026
21AQI (US)
21AQI (US)
11th January 2026
13AQI (US)
13AQI (US)
12th January 2026
12AQI (US)
12AQI (US)
13th January 2026
29AQI (US)
29AQI (US)
14th January 2026
38AQI (US)
38AQI (US)
15th January 2026
33AQI (US)
33AQI (US)
16th January 2026
14AQI (US)
14AQI (US)
17th January 2026
30AQI (US)
30AQI (US)
18th January 2026
49AQI (US)
49AQI (US)
19th January 2026
28AQI (US)
28AQI (US)
20th January 2026
28AQI (US)
28AQI (US)
21st January 2026
27AQI (US)
27AQI (US)
22nd January 2026
35AQI (US)
35AQI (US)
23rd January 2026
33AQI (US)
33AQI (US)
24th January 2026
46AQI (US)
46AQI (US)
25th January 2026
31AQI (US)
31AQI (US)
26th January 2026
36AQI (US)
36AQI (US)
27th January 2026
30AQI (US)
30AQI (US)
28th January 2026
23AQI (US)
23AQI (US)
29th January 2026
29AQI (US)
29AQI (US)
30th January 2026
45AQI (US)
45AQI (US)
31st January 2026
26AQI (US)
26AQI (US)
1st February 2026
28AQI (US)
28AQI (US)
2nd February 2026
28AQI (US)
28AQI (US)
3rd February 2026
23AQI (US)
23AQI (US)
4th February 2026
21AQI (US)
21AQI (US)
5th February 2026
28AQI (US)
28AQI (US)
6th February 2026
36AQI (US)
36AQI (US)
7th February 2026
25AQI (US)
25AQI (US)
8th February 2026
22AQI (US)
22AQI (US)
9th February 2026
25AQI (US)
25AQI (US)
10th February 2026
24AQI (US)
24AQI (US)
11th February 2026
35AQI (US)
35AQI (US)
12th February 2026
32AQI (US)
32AQI (US)
13th February 2026
33AQI (US)
33AQI (US)
14th February 2026
30AQI (US)
30AQI (US)
15th February 2026
29AQI (US)
29AQI (US)
16th February 2026
29AQI (US)
29AQI (US)
17th February 2026
40AQI (US)
40AQI (US)
18th February 2026
38AQI (US)
38AQI (US)
19th February 2026
26AQI (US)
26AQI (US)
20th February 2026
26AQI (US)
26AQI (US)
21st February 2026
35AQI (US)
35AQI (US)
22nd February 2026
30AQI (US)
30AQI (US)
23rd February 2026
38AQI (US)
38AQI (US)
24th February 2026
36AQI (US)
36AQI (US)
25th February 2026
28AQI (US)
28AQI (US)
26th February 2026
29AQI (US)
29AQI (US)
27th February 2026
19AQI (US)
19AQI (US)
28th February 2026
19AQI (US)
19AQI (US)
1st March 2026
30AQI (US)
30AQI (US)
2nd March 2026
41AQI (US)
41AQI (US)
3rd March 2026
22AQI (US)
22AQI (US)
4th March 2026
24AQI (US)
24AQI (US)
5th March 2026
28AQI (US)
28AQI (US)
6th March 2026
37AQI (US)
37AQI (US)
7th March 2026
18AQI (US)
18AQI (US)
8th March 2026
19AQI (US)
19AQI (US)
9th March 2026
15AQI (US)
15AQI (US)
10th March 2026
18AQI (US)
18AQI (US)
11th March 2026
28AQI (US)
28AQI (US)
12th March 2026
32AQI (US)
32AQI (US)
13th March 2026
27AQI (US)
27AQI (US)
14th March 2026
20AQI (US)
20AQI (US)
15th March 2026
32AQI (US)
32AQI (US)
16th March 2026
26AQI (US)
26AQI (US)
17th March 2026
34AQI (US)
34AQI (US)
18th March 2026
28AQI (US)
28AQI (US)
19th March 2026
20AQI (US)
20AQI (US)
20th March 2026
25AQI (US)
25AQI (US)
21st March 2026
29AQI (US)
29AQI (US)
22nd March 2026
16AQI (US)
16AQI (US)
23rd March 2026
36AQI (US)
36AQI (US)
24th March 2026
33AQI (US)
33AQI (US)
25th March 2026
22AQI (US)
22AQI (US)
26th March 2026
18AQI (US)
18AQI (US)
27th March 2026
30AQI (US)
30AQI (US)
28th March 2026
27AQI (US)
27AQI (US)
29th March 2026
16AQI (US)
16AQI (US)
30th March 2026
19AQI (US)
19AQI (US)
31st March 2026
26AQI (US)
26AQI (US)
1st April 2026
31AQI (US)
31AQI (US)
2nd April 2026
33AQI (US)
33AQI (US)
3rd April 2026
23AQI (US)
23AQI (US)
4th April 2026
27AQI (US)
27AQI (US)
5th April 2026
27AQI (US)
27AQI (US)
6th April 2026
29AQI (US)
29AQI (US)
7th April 2026
23AQI (US)
23AQI (US)
8th April 2026
34AQI (US)
34AQI (US)
9th April 2026
17AQI (US)
17AQI (US)
10th April 2026
20AQI (US)
20AQI (US)
11th April 2026
32AQI (US)
32AQI (US)
12th April 2026
22AQI (US)
22AQI (US)
13th April 2026
22AQI (US)
22AQI (US)
14th April 2026
24AQI (US)
24AQI (US)
15th April 2026
20AQI (US)
20AQI (US)
16th April 2026
24AQI (US)
24AQI (US)
17th April 2026
18th April 2026
27AQI (US)
27AQI (US)
19th April 2026
31AQI (US)
31AQI (US)
20th April 2026
27AQI (US)
27AQI (US)
21st April 2026
23AQI (US)
23AQI (US)
22nd April 2026
23rd April 2026
17AQI (US)
17AQI (US)
24th April 2026
20AQI (US)
20AQI (US)
25th April 2026
14AQI (US)
14AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
23AQI (US)
23AQI (US)
28th April 2026
18AQI (US)
18AQI (US)
29th April 2026
16AQI (US)
16AQI (US)
30th April 2026
19AQI (US)
19AQI (US)
1st May 2026
25AQI (US)
25AQI (US)
2nd May 2026
13AQI (US)
13AQI (US)
3rd May 2026
20AQI (US)
20AQI (US)
4th May 2026
23AQI (US)
23AQI (US)
5th May 2026
30AQI (US)
30AQI (US)
6th May 2026
23AQI (US)
23AQI (US)
7th May 2026
26AQI (US)
26AQI (US)
8th May 2026
25AQI (US)
25AQI (US)
9th May 2026
10th May 2026
17AQI (US)
17AQI (US)
11th May 2026
28AQI (US)
28AQI (US)
12th May 2026
31AQI (US)
31AQI (US)
13th May 2026
19AQI (US)
19AQI (US)
14th May 2026
19AQI (US)
19AQI (US)
15th May 2026
40AQI (US)
40AQI (US)
16th May 2026
40AQI (US)
40AQI (US)
17th May 2026
50AQI (US)
50AQI (US)
18th May 2026
54AQI (US)
54AQI (US)
19th May 2026
54AQI (US)
54AQI (US)
20th May 2026
49AQI (US)
49AQI (US)
21st May 2026
40AQI (US)
40AQI (US)
22nd May 2026
37AQI (US)
37AQI (US)
23rd May 2026
40AQI (US)
40AQI (US)
24th May 2026
44AQI (US)
44AQI (US)
25th May 2026
45AQI (US)
45AQI (US)
26th May 2026
19AQI (US)
19AQI (US)
27th May 2026
15AQI (US)
15AQI (US)
28th May 2026
16AQI (US)
16AQI (US)
29th May 2026
16AQI (US)
16AQI (US)
30th May 2026
16AQI (US)
16AQI (US)
31st May 2026
18AQI (US)
18AQI (US)
1st June 2026
23AQI (US)
23AQI (US)
2nd June 2026
16AQI (US)
16AQI (US)
3rd June 2026
15AQI (US)
15AQI (US)
4th June 2026
17AQI (US)
17AQI (US)
5th June 2026
23AQI (US)
23AQI (US)
6th June 2026
24AQI (US)
24AQI (US)
7th June 2026
14AQI (US)
14AQI (US)
8th June 2026
18AQI (US)
18AQI (US)
9th June 2026
14AQI (US)
14AQI (US)
10th June 2026
18AQI (US)
18AQI (US)
11th June 2026
21AQI (US)
21AQI (US)
12th June 2026
14AQI (US)
14AQI (US)
13th June 2026
14AQI (US)
14AQI (US)
14th June 2026
16AQI (US)
16AQI (US)
15th June 2026
20AQI (US)
20AQI (US)
16th June 2026
24AQI (US)
24AQI (US)
17th June 2026
16AQI (US)
16AQI (US)
18th June 2026
24AQI (US)
24AQI (US)
19th June 2026
15AQI (US)
15AQI (US)
20th June 2026
15AQI (US)
15AQI (US)
21st June 2026
19AQI (US)
19AQI (US)
22nd June 2026
14AQI (US)
14AQI (US)
23rd June 2026
17AQI (US)
17AQI (US)
24th June 2026
12AQI (US)
12AQI (US)
25th June 2026
12AQI (US)
12AQI (US)
26th June 2026
18AQI (US)
18AQI (US)
27th June 2026
20AQI (US)
20AQI (US)
28th June 2026
15AQI (US)
15AQI (US)
29th June 2026
18AQI (US)
18AQI (US)
30th June 2026
23AQI (US)
23AQI (US)
1st July 2026
20AQI (US)
20AQI (US)
2nd July 2026
30AQI (US)
30AQI (US)
3rd July 2026
30AQI (US)
30AQI (US)
4th July 2026
22AQI (US)
22AQI (US)
5th July 2026
28AQI (US)
28AQI (US)
6th July 2026
24AQI (US)
24AQI (US)
7th July 2026
12AQI (US)
12AQI (US)
8th July 2026
17AQI (US)
17AQI (US)
9th July 2026
18AQI (US)
18AQI (US)
10th July 2026
16AQI (US)
16AQI (US)
11th July 2026
22AQI (US)
22AQI (US)
12th July 2026
20AQI (US)
20AQI (US)
13th July 2026
19AQI (US)
19AQI (US)
14th July 2026
20AQI (US)
20AQI (US)
15th July 2026
43AQI (US)
43AQI (US)
16th July 2026
52AQI (US)
52AQI (US)
17th July 2026
78AQI (US)
78AQI (US)
18th July 2026
102AQI (US)
102AQI (US)
19th July 2026
44AQI (US)
44AQI (US)
20th July 2026
30AQI (US)
30AQI (US)
21st July 2026
40AQI (US)
40AQI (US)
22nd July 2026
35AQI (US)
35AQI (US)
23rd July 2026
22AQI (US)
22AQI (US)
24th July 2026
26AQI (US)
26AQI (US)
25th July 2026
31AQI (US)
31AQI (US)
26th July 2026
31AQI (US)
31AQI (US)
27th July 2026
34AQI (US)
34AQI (US)
28th July 2026
37AQI (US)
37AQI (US)
29th July 2026
32AQI (US)
32AQI (US)
30th July 2026
25AQI (US)
25AQI (US)
31st July 2026
25AQI (US)
25AQI (US)
1st August 2026
39AQI (US)
39AQI (US)
2nd August 2026
34AQI (US)
34AQI (US)
3rd August 2026
40AQI (US)
40AQI (US)
4th August 2026
22AQI (US)
22AQI (US)
5th August 2026
33AQI (US)
33AQI (US)
6th August 2026
38AQI (US)
38AQI (US)
7th August 2026
36AQI (US)
36AQI (US)
8th August 2026
25AQI (US)
25AQI (US)
9th August 2026
40AQI (US)
40AQI (US)
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
28AQI (US)
29AQI (US)
26AQI (US)
24AQI (US)
30AQI (US)
18AQI (US)
32AQI (US)
34AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202627AQI (US)
31
28
31
28
28
2
30
28
2
1
9
213
4
1
Highest AQI (US) recorded in
August34AQI (US)
Lowest AQI (US) recorded in
June18AQI (US)
202529AQI (US)
27
4
28
31
29
1
30
1
18
12
23
8
25
6
30
29
2
30
30
1
330
35
Highest AQI (US) recorded in
June40AQI (US)
Lowest AQI (US) recorded in
October21AQI (US)
202424AQI (US)
31
29
31
30
31
30
28
2
26
5
30
30
1
30
30
1
356
9
Highest AQI (US) recorded in
August34AQI (US)
Lowest AQI (US) recorded in
March19AQI (US)
202331AQI (US)
28
3
27
1
30
1
28
2
31
22
4
3
1
23
7
1
26
5
24
6
27
3
1
28
1
29
2
323
35
5
1
Highest AQI (US) recorded in
June48AQI (US)
Lowest AQI (US) recorded in
November23AQI (US)
202227AQI (US)
26
4
20
1
30
1
29
1
30
1
30
19
4
1
29
31
29
1
30
1
304
14
Highest AQI (US) recorded in
July35AQI (US)
Lowest AQI (US) recorded in
April22AQI (US)
202130AQI (US)
25
4
24
4
30
1
29
1
31
28
2
25
5
1
29
2
30
31
28
2
25
4
335
25
1
Highest AQI (US) recorded in
July42AQI (US)
Lowest AQI (US) recorded in
May24AQI (US)
202030AQI (US)
16
2
18
30
31
31
28
2
28
2
1
26
4
26
5
234
15
1
Highest AQI (US) recorded in
July34AQI (US)
Lowest AQI (US) recorded in
September24AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
31AQI (US)Least Polluted Year Recorded
2024(Avg.)
24AQI (US)Groton's annual 2026 AQI (US) (27) shows an average percentage change of -4.5% (improved AQI (US)) compared to previous years: 2020 (30), 2021 (30), 2022 (27), 2023 (31), 2024 (24), 2025 (29).
