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
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
83AQILowest AQI recorded on
20th Aug 2021
12AQISame Day Analysis (13th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 39 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 13th Aug - 14th Aug 2025
Groton, Connecticut, United States
AQI
Day
Night
.
5 AM13th Aug 2025
8 PM
4 AM14th Aug 2025
Day time
Avg. Highest Time
10AM13th Aug
46AQI
Avg. Lowest Time
6PM13th Aug
30AQI
Night time
Avg. Highest Time
3AM14th Aug
39AQI
Avg. Lowest Time
11PM13th Aug
27AQI
In the last 24 hours,
Groton's AQI reached its highest point of 46 at 10 AM during the Day, while the lowest point, 27, was recorded at 11 PM during the Night between 13th Aug and 14th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Groton, Connecticut, United States
JulAug
15th - 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 - 13th13th - 14th14th
Day
Night
15th Jul 2025245 AMAQI
15th Jul 2025246 AMAQI
15th Jul 2025247 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025239 AMAQI
15th Jul 20252310 AMAQI
15th Jul 20252411 AMAQI
15th Jul 20252412 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025262 PMAQI
15th Jul 2025253 PMAQI
15th Jul 2025234 PMAQI
15th Jul 2025245 PMAQI
15th Jul 2025246 PMAQI
15th Jul 2025257 PMAQI
15th Jul 2025258 PMAQI
15th Jul 2025259 PMAQI
15th Jul 20252410 PMAQI
15th Jul 20252611 PMAQI
16th Jul 20252612 AMAQI
16th Jul 2025281 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025323 AMAQI
16th Jul 2025324 AMAQI
24°C22/27°C
16th Jul 2025295 AMAQI
16th Jul 2025286 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025328 AMAQI
16th Jul 2025349 AMAQI
16th Jul 20253610 AMAQI
16th Jul 20254011 AMAQI
16th Jul 20253912 PMAQI
16th Jul 2025391 PMAQI
16th Jul 2025382 PMAQI
16th Jul 2025363 PMAQI
16th Jul 2025364 PMAQI
16th Jul 2025365 PMAQI
16th Jul 2025366 PMAQI
16th Jul 2025367 PMAQI
16th Jul 2025348 PMAQI
16th Jul 2025359 PMAQI
16th Jul 20253510 PMAQI
16th Jul 20253611 PMAQI
17th Jul 20253512 AMAQI
17th Jul 2025351 AMAQI
17th Jul 2025372 AMAQI
17th Jul 2025403 AMAQI
17th Jul 2025434 AMAQI
25°C22/28°C
17th Jul 2025445 AMAQI
17th Jul 2025436 AMAQI
17th Jul 2025437 AMAQI
17th Jul 2025448 AMAQI
17th Jul 2025399 AMAQI
17th Jul 20253310 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20252812 PMAQI
17th Jul 2025281 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025333 PMAQI
17th Jul 2025364 PMAQI
17th Jul 2025375 PMAQI
17th Jul 2025386 PMAQI
17th Jul 2025387 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025429 PMAQI
17th Jul 20254110 PMAQI
17th Jul 20254211 PMAQI
18th Jul 20253812 AMAQI
18th Jul 2025351 AMAQI
18th Jul 2025282 AMAQI
18th Jul 2025253 AMAQI
18th Jul 2025214 AMAQI
25°C23/27°C
18th Jul 2025225 AMAQI
18th Jul 2025226 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025188 AMAQI
18th Jul 2025159 AMAQI
18th Jul 20251310 AMAQI
18th Jul 20252411 AMAQI
18th Jul 20251512 PMAQI
18th Jul 2025141 PMAQI
18th Jul 2025152 PMAQI
18th Jul 2025203 PMAQI
18th Jul 2025174 PMAQI
18th Jul 2025185 PMAQI
18th Jul 2025186 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025178 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20251910 PMAQI
18th Jul 20252311 PMAQI
19th Jul 20252212 AMAQI
19th Jul 2025231 AMAQI
19th Jul 2025232 AMAQI
19th Jul 2025233 AMAQI
19th Jul 2025244 AMAQI
25°C22/27°C
19th Jul 2025255 AMAQI
19th Jul 2025266 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025228 AMAQI
19th Jul 2025229 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252311 AMAQI
19th Jul 20252312 PMAQI
19th Jul 2025221 PMAQI
19th Jul 2025212 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025204 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025196 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025208 PMAQI
19th Jul 2025209 PMAQI
19th Jul 20252010 PMAQI
19th Jul 20251911 PMAQI
20th Jul 20252012 AMAQI
20th Jul 2025171 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025164 AMAQI
22°C14/28°C
20th Jul 2025185 AMAQI
20th Jul 2025216 AMAQI
20th Jul 2025217 AMAQI
20th Jul 2025198 AMAQI
20th Jul 2025199 AMAQI
20th Jul 20252010 AMAQI
20th Jul 20252011 AMAQI
20th Jul 20252312 PMAQI
20th Jul 2025231 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025227 PMAQI
20th Jul 2025228 PMAQI
20th Jul 2025259 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025301 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025253 AMAQI
21st Jul 2025244 AMAQI
23°C21/26°C
21st Jul 2025245 AMAQI
21st Jul 2025246 AMAQI
21st Jul 2025247 AMAQI
21st Jul 2025258 AMAQI
21st Jul 2025319 AMAQI
21st Jul 20254310 AMAQI
21st Jul 20255211 AMAQI
21st Jul 20255512 PMAQI
21st Jul 2025571 PMAQI
21st Jul 2025592 PMAQI
21st Jul 2025573 PMAQI
21st Jul 2025564 PMAQI
21st Jul 2025595 PMAQI
21st Jul 2025576 PMAQI
21st Jul 2025397 PMAQI
21st Jul 2025368 PMAQI
21st Jul 2025419 PMAQI
21st Jul 20253710 PMAQI
21st Jul 20253211 PMAQI
22nd Jul 20253112 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025234 AMAQI
24°C19/30°C
22nd Jul 2025245 AMAQI
22nd Jul 2025226 AMAQI
22nd Jul 2025227 AMAQI
22nd Jul 2025218 AMAQI
22nd Jul 2025209 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025202 PMAQI
22nd Jul 2025203 PMAQI
22nd Jul 2025194 PMAQI
22nd Jul 2025195 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025217 PMAQI
22nd Jul 2025218 PMAQI
22nd Jul 2025219 PMAQI
22nd Jul 20252010 PMAQI
22nd Jul 20252111 PMAQI
23rd Jul 20252212 AMAQI
23rd Jul 2025211 AMAQI
23rd Jul 2025212 AMAQI
23rd Jul 2025203 AMAQI
23rd Jul 2025204 AMAQI
21°C15/27°C
23rd Jul 2025205 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025207 AMAQI
23rd Jul 2025218 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20252712 PMAQI
23rd Jul 2025261 PMAQI
23rd Jul 2025272 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025254 PMAQI
23rd Jul 2025245 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025248 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20252312 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025232 AMAQI
24th Jul 2025193 AMAQI
24th Jul 2025204 AMAQI
22°C18/25°C
24th Jul 2025205 AMAQI
24th Jul 2025206 AMAQI
24th Jul 2025207 AMAQI
24th Jul 2025208 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252310 AMAQI
24th Jul 20252511 AMAQI
24th Jul 20252512 PMAQI
24th Jul 2025281 PMAQI
24th Jul 2025302 PMAQI
24th Jul 2025323 PMAQI
24th Jul 2025324 PMAQI
24th Jul 2025305 PMAQI
24th Jul 2025316 PMAQI
24th Jul 2025247 PMAQI
24th Jul 2025258 PMAQI
24th Jul 2025309 PMAQI
24th Jul 20252910 PMAQI
24th Jul 20252811 PMAQI
25th Jul 20253012 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025342 AMAQI
25th Jul 2025343 AMAQI
25th Jul 2025354 AMAQI
24°C20/29°C
25th Jul 2025385 AMAQI
25th Jul 2025396 AMAQI
25th Jul 2025407 AMAQI
25th Jul 2025428 AMAQI
25th Jul 2025489 AMAQI
25th Jul 20254910 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20255312 PMAQI
25th Jul 2025551 PMAQI
25th Jul 2025542 PMAQI
25th Jul 2025543 PMAQI
25th Jul 2025524 PMAQI
25th Jul 2025505 PMAQI
25th Jul 2025476 PMAQI
25th Jul 2025457 PMAQI
25th Jul 2025428 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20253610 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025372 AMAQI
26th Jul 2025353 AMAQI
26th Jul 2025404 AMAQI
26°C23/33°C
26th Jul 2025495 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025628 AMAQI
26th Jul 2025779 AMAQI
26th Jul 20259710 AMAQI
26th Jul 202510611 AMAQI
26th Jul 202510612 PMAQI
26th Jul 20251051 PMAQI
26th Jul 2025942 PMAQI
26th Jul 2025863 PMAQI
26th Jul 2025804 PMAQI
26th Jul 2025875 PMAQI
26th Jul 2025876 PMAQI
26th Jul 2025777 PMAQI
26th Jul 2025788 PMAQI
26th Jul 2025809 PMAQI
26th Jul 20258010 PMAQI
26th Jul 20257711 PMAQI
27th Jul 20257512 AMAQI
27th Jul 2025841 AMAQI
27th Jul 2025822 AMAQI
27th Jul 2025823 AMAQI
27th Jul 2025804 AMAQI
25°C22/30°C
27th Jul 2025795 AMAQI
27th Jul 2025766 AMAQI
27th Jul 2025777 AMAQI
27th Jul 2025778 AMAQI
27th Jul 2025799 AMAQI
27th Jul 20258310 AMAQI
27th Jul 20258211 AMAQI
27th Jul 20258012 PMAQI
27th Jul 2025821 PMAQI
27th Jul 2025812 PMAQI
27th Jul 2025853 PMAQI
27th Jul 2025864 PMAQI
27th Jul 2025845 PMAQI
27th Jul 2025826 PMAQI
27th Jul 2025817 PMAQI
27th Jul 2025848 PMAQI
27th Jul 2025809 PMAQI
27th Jul 20258410 PMAQI
27th Jul 20258311 PMAQI
28th Jul 20258212 AMAQI
28th Jul 2025771 AMAQI
28th Jul 2025752 AMAQI
28th Jul 2025733 AMAQI
28th Jul 2025684 AMAQI
22°C19/25°C
28th Jul 2025685 AMAQI
28th Jul 2025666 AMAQI
28th Jul 2025667 AMAQI
28th Jul 2025638 AMAQI
28th Jul 2025629 AMAQI
28th Jul 20255810 AMAQI
28th Jul 20255611 AMAQI
28th Jul 20255512 PMAQI
28th Jul 2025541 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025584 PMAQI
28th Jul 2025595 PMAQI
28th Jul 2025586 PMAQI
28th Jul 2025607 PMAQI
28th Jul 2025608 PMAQI
28th Jul 2025619 PMAQI
28th Jul 20255910 PMAQI
28th Jul 20256111 PMAQI
29th Jul 20256012 AMAQI
29th Jul 2025621 AMAQI
29th Jul 2025622 AMAQI
29th Jul 2025623 AMAQI
29th Jul 2025604 AMAQI
24°C21/31°C
29th Jul 2025595 AMAQI
29th Jul 2025616 AMAQI
29th Jul 2025607 AMAQI
29th Jul 2025588 AMAQI
29th Jul 2025579 AMAQI
29th Jul 20255610 AMAQI
29th Jul 20255711 AMAQI
29th Jul 20255712 PMAQI
29th Jul 2025561 PMAQI
29th Jul 2025582 PMAQI
29th Jul 2025593 PMAQI
29th Jul 2025584 PMAQI
29th Jul 2025575 PMAQI
29th Jul 2025576 PMAQI
29th Jul 2025587 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025579 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255611 PMAQI
30th Jul 20255512 AMAQI
30th Jul 2025551 AMAQI
30th Jul 2025552 AMAQI
30th Jul 2025543 AMAQI
30th Jul 2025544 AMAQI
26°C21/34°C
30th Jul 2025535 AMAQI
30th Jul 2025546 AMAQI
30th Jul 2025537 AMAQI
30th Jul 2025538 AMAQI
30th Jul 2025529 AMAQI
30th Jul 20255110 AMAQI
30th Jul 20255211 AMAQI
30th Jul 20255212 PMAQI
30th Jul 2025531 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025523 PMAQI
30th Jul 2025524 PMAQI
30th Jul 2025525 PMAQI
30th Jul 2025526 PMAQI
30th Jul 2025527 PMAQI
30th Jul 2025528 PMAQI
30th Jul 2025549 PMAQI
30th Jul 20255410 PMAQI
30th Jul 20255411 PMAQI
31st Jul 20255512 AMAQI
31st Jul 2025541 AMAQI
31st Jul 2025542 AMAQI
31st Jul 2025543 AMAQI
31st Jul 2025534 AMAQI
26°C21/31°C
31st Jul 2025545 AMAQI
31st Jul 2025546 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025579 AMAQI
31st Jul 20255710 AMAQI
31st Jul 20255911 AMAQI
31st Jul 20256012 PMAQI
31st Jul 2025661 PMAQI
31st Jul 2025682 PMAQI
31st Jul 2025723 PMAQI
31st Jul 2025744 PMAQI
31st Jul 2025785 PMAQI
31st Jul 2025786 PMAQI
31st Jul 2025577 PMAQI
31st Jul 2025658 PMAQI
31st Jul 2025779 PMAQI
31st Jul 20257410 PMAQI
31st Jul 20256911 PMAQI
1st Aug 20256512 AMAQI
1st Aug 2025611 AMAQI
1st Aug 2025552 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025554 AMAQI
24°C19/28°C
1st Aug 2025545 AMAQI
1st Aug 2025546 AMAQI
1st Aug 2025557 AMAQI
1st Aug 2025568 AMAQI
1st Aug 2025569 AMAQI
1st Aug 20255410 AMAQI
1st Aug 20255211 AMAQI
1st Aug 20255712 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025572 PMAQI
1st Aug 2025563 PMAQI
1st Aug 2025534 PMAQI
1st Aug 2025485 PMAQI
1st Aug 2025436 PMAQI
1st Aug 2025567 PMAQI
1st Aug 2025478 PMAQI
1st Aug 2025379 PMAQI
1st Aug 20254010 PMAQI
1st Aug 20254311 PMAQI
2nd Aug 20254812 AMAQI
2nd Aug 2025501 AMAQI
2nd Aug 2025472 AMAQI
2nd Aug 2025433 AMAQI
2nd Aug 2025484 AMAQI
20°C16/23°C
2nd Aug 2025465 AMAQI
2nd Aug 2025446 AMAQI
2nd Aug 2025427 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025369 AMAQI
2nd Aug 20253010 AMAQI
2nd Aug 20252611 AMAQI
2nd Aug 20252412 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025222 PMAQI
2nd Aug 2025213 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025235 PMAQI
2nd Aug 2025256 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025328 PMAQI
2nd Aug 2025329 PMAQI
2nd Aug 20253210 PMAQI
2nd Aug 20253511 PMAQI
3rd Aug 20253812 AMAQI
3rd Aug 2025391 AMAQI
3rd Aug 2025412 AMAQI
3rd Aug 2025403 AMAQI
3rd Aug 2025464 AMAQI
21°C14/28°C
3rd Aug 2025425 AMAQI
3rd Aug 2025416 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20254410 AMAQI
3rd Aug 20255111 AMAQI
3rd Aug 20255412 PMAQI
3rd Aug 2025561 PMAQI
3rd Aug 2025542 PMAQI
3rd Aug 2025543 PMAQI
3rd Aug 2025544 PMAQI
3rd Aug 2025515 PMAQI
3rd Aug 2025516 PMAQI
3rd Aug 2025427 PMAQI
3rd Aug 2025428 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20253710 PMAQI
3rd Aug 20253511 PMAQI
4th Aug 20253512 AMAQI
4th Aug 2025351 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025363 AMAQI
4th Aug 2025364 AMAQI
22°C12/29°C
4th Aug 2025365 AMAQI
4th Aug 2025386 AMAQI
4th Aug 2025377 AMAQI
4th Aug 2025398 AMAQI
4th Aug 2025399 AMAQI
4th Aug 20255010 AMAQI
4th Aug 20255911 AMAQI
4th Aug 20256712 PMAQI
4th Aug 2025701 PMAQI
4th Aug 2025732 PMAQI
4th Aug 2025723 PMAQI
4th Aug 2025754 PMAQI
4th Aug 2025735 PMAQI
4th Aug 2025746 PMAQI
4th Aug 2025427 PMAQI
4th Aug 2025608 PMAQI
4th Aug 2025689 PMAQI
4th Aug 20256610 PMAQI
4th Aug 20256611 PMAQI
5th Aug 20256912 AMAQI
5th Aug 2025721 AMAQI
5th Aug 2025682 AMAQI
5th Aug 2025703 AMAQI
5th Aug 2025764 AMAQI
22°C13/31°C
5th Aug 2025775 AMAQI
5th Aug 2025826 AMAQI
5th Aug 2025897 AMAQI
5th Aug 2025978 AMAQI
5th Aug 2025929 AMAQI
5th Aug 20259810 AMAQI
5th Aug 20259911 AMAQI
5th Aug 20259912 PMAQI
5th Aug 2025951 PMAQI
5th Aug 2025962 PMAQI
5th Aug 2025983 PMAQI
5th Aug 2025914 PMAQI
5th Aug 2025885 PMAQI
5th Aug 2025876 PMAQI
5th Aug 2025817 PMAQI
5th Aug 2025808 PMAQI
5th Aug 2025809 PMAQI
5th Aug 20257610 PMAQI
5th Aug 20257811 PMAQI
6th Aug 20257412 AMAQI
6th Aug 2025771 AMAQI
6th Aug 2025722 AMAQI
6th Aug 2025743 AMAQI
6th Aug 2025754 AMAQI
21°C16/27°C
6th Aug 2025735 AMAQI
6th Aug 2025716 AMAQI
6th Aug 2025687 AMAQI
6th Aug 2025648 AMAQI
6th Aug 2025649 AMAQI
6th Aug 20256010 AMAQI
6th Aug 20255911 AMAQI
6th Aug 20256112 PMAQI
6th Aug 2025581 PMAQI
6th Aug 2025582 PMAQI
6th Aug 2025673 PMAQI
6th Aug 2025684 PMAQI
6th Aug 2025565 PMAQI
6th Aug 2025536 PMAQI
6th Aug 2025657 PMAQI
6th Aug 2025608 PMAQI
6th Aug 2025529 PMAQI
6th Aug 20255010 PMAQI
6th Aug 20255211 PMAQI
7th Aug 20255512 AMAQI
7th Aug 2025471 AMAQI
7th Aug 2025472 AMAQI
7th Aug 2025513 AMAQI
7th Aug 2025524 AMAQI
22°C17/29°C
7th Aug 2025525 AMAQI
7th Aug 2025536 AMAQI
7th Aug 2025547 AMAQI
7th Aug 2025558 AMAQI
7th Aug 2025549 AMAQI
7th Aug 20255410 AMAQI
7th Aug 20255211 AMAQI
7th Aug 20255312 PMAQI
7th Aug 2025521 PMAQI
7th Aug 2025502 PMAQI
7th Aug 2025503 PMAQI
7th Aug 2025464 PMAQI
7th Aug 2025465 PMAQI
7th Aug 2025426 PMAQI
7th Aug 2025487 PMAQI
7th Aug 2025478 PMAQI
7th Aug 2025409 PMAQI
7th Aug 20253910 PMAQI
7th Aug 20254011 PMAQI
8th Aug 20254012 AMAQI
8th Aug 2025311 AMAQI
8th Aug 2025292 AMAQI
8th Aug 2025283 AMAQI
8th Aug 2025334 AMAQI
21°C18/25°C
8th Aug 2025305 AMAQI
8th Aug 2025306 AMAQI
8th Aug 2025307 AMAQI
8th Aug 2025308 AMAQI
8th Aug 2025309 AMAQI
8th Aug 20252910 AMAQI
8th Aug 20253111 AMAQI
8th Aug 20253012 PMAQI
8th Aug 2025301 PMAQI
8th Aug 2025302 PMAQI
8th Aug 2025303 PMAQI
8th Aug 2025324 PMAQI
8th Aug 2025325 PMAQI
8th Aug 2025326 PMAQI
8th Aug 2025307 PMAQI
8th Aug 2025298 PMAQI
8th Aug 2025309 PMAQI
8th Aug 20253010 PMAQI
8th Aug 20253111 PMAQI
9th Aug 20253412 AMAQI
9th Aug 2025331 AMAQI
9th Aug 2025332 AMAQI
9th Aug 2025333 AMAQI
9th Aug 2025324 AMAQI
19°C13/26°C
9th Aug 2025345 AMAQI
9th Aug 2025346 AMAQI
9th Aug 2025347 AMAQI
9th Aug 2025348 AMAQI
9th Aug 2025329 AMAQI
9th Aug 20253110 AMAQI
9th Aug 20253211 AMAQI
9th Aug 20253312 PMAQI
9th Aug 2025321 PMAQI
9th Aug 2025342 PMAQI
9th Aug 2025323 PMAQI
9th Aug 2025324 PMAQI
9th Aug 2025305 PMAQI
9th Aug 2025306 PMAQI
9th Aug 2025327 PMAQI
9th Aug 2025328 PMAQI
9th Aug 2025329 PMAQI
9th Aug 20253210 PMAQI
9th Aug 20253211 PMAQI
10th Aug 20253212 AMAQI
10th Aug 2025311 AMAQI
10th Aug 2025302 AMAQI
10th Aug 2025303 AMAQI
10th Aug 2025304 AMAQI
19°C12/24°C
10th Aug 2025285 AMAQI
10th Aug 2025296 AMAQI
10th Aug 2025307 AMAQI
10th Aug 2025298 AMAQI
10th Aug 2025289 AMAQI
10th Aug 20253010 AMAQI
10th Aug 20253211 AMAQI
10th Aug 20253312 PMAQI
10th Aug 2025371 PMAQI
10th Aug 2025382 PMAQI
10th Aug 2025383 PMAQI
10th Aug 2025414 PMAQI
10th Aug 2025425 PMAQI
10th Aug 2025406 PMAQI
10th Aug 2025357 PMAQI
10th Aug 2025348 PMAQI
10th Aug 2025399 PMAQI
10th Aug 20253810 PMAQI
10th Aug 20253811 PMAQI
11th Aug 20253812 AMAQI
11th Aug 2025411 AMAQI
11th Aug 2025382 AMAQI
11th Aug 2025393 AMAQI
11th Aug 2025384 AMAQI
22°C15/30°C
11th Aug 2025385 AMAQI
11th Aug 2025396 AMAQI
11th Aug 2025437 AMAQI
11th Aug 2025458 AMAQI
11th Aug 2025469 AMAQI
11th Aug 20254910 AMAQI
11th Aug 20255311 AMAQI
11th Aug 20255512 PMAQI
11th Aug 2025561 PMAQI
11th Aug 2025572 PMAQI
11th Aug 2025563 PMAQI
11th Aug 2025574 PMAQI
11th Aug 2025505 PMAQI
11th Aug 2025466 PMAQI
11th Aug 2025427 PMAQI
11th Aug 2025488 PMAQI
11th Aug 2025469 PMAQI
11th Aug 20254710 PMAQI
11th Aug 20255111 PMAQI
12th Aug 20255012 AMAQI
12th Aug 2025501 AMAQI
12th Aug 2025482 AMAQI
12th Aug 2025503 AMAQI
12th Aug 2025504 AMAQI
24°C19/31°C
12th Aug 2025465 AMAQI
12th Aug 2025506 AMAQI
12th Aug 2025507 AMAQI
12th Aug 2025528 AMAQI
12th Aug 2025529 AMAQI
12th Aug 20255310 AMAQI
12th Aug 20255311 AMAQI
12th Aug 20255212 PMAQI
12th Aug 2025521 PMAQI
12th Aug 2025532 PMAQI
12th Aug 2025543 PMAQI
12th Aug 2025544 PMAQI
12th Aug 2025535 PMAQI
12th Aug 2025536 PMAQI
12th Aug 2025547 PMAQI
12th Aug 2025538 PMAQI
12th Aug 2025489 PMAQI
12th Aug 20254810 PMAQI
12th Aug 20254911 PMAQI
13th Aug 20254512 AMAQI
13th Aug 2025421 AMAQI
13th Aug 2025392 AMAQI
13th Aug 2025393 AMAQI
13th Aug 2025374 AMAQI
24°C19/31°C
13th Aug 2025375 AMAQI
13th Aug 2025376 AMAQI
13th Aug 2025397 AMAQI
13th Aug 2025428 AMAQI
13th Aug 2025439 AMAQI
13th Aug 20254610 AMAQI
13th Aug 20254611 AMAQI
13th Aug 20254512 PMAQI
13th Aug 2025421 PMAQI
13th Aug 2025442 PMAQI
13th Aug 2025433 PMAQI
13th Aug 2025394 PMAQI
13th Aug 2025335 PMAQI
13th Aug 2025306 PMAQI
13th Aug 2025397 PMAQI
13th Aug 2025348 PMAQI
13th Aug 2025289 PMAQI
13th Aug 20252710 PMAQI
13th Aug 20252711 PMAQI
14th Aug 20252812 AMAQI
14th Aug 2025281 AMAQI
14th Aug 2025302 AMAQI
14th Aug 2025393 AMAQI
14th Aug 2025324 AMAQI
22°C20/25°C
14th Aug 2025265 AMAQI
5 AM14th Aug 2025266 AMAQI
14th Aug 2025287 AMAQI
14th Aug 2025278 AMAQI
14th Aug 2025269 AMAQI
14th Aug 20252710 AMAQI
14th Aug 20252811 AMAQI
14th Aug 20253012 PMAQI
12 PM14th Aug 2025321 PMAQI
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
44AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
44AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 44), while the lowest AQI was between 5 AM to 8 PM (Avg. 44).
Night time
Avg. Highest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
42AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).
2025 Days Vs Air Quality
Groton, Connecticut, United States
2025
86%
194
14%
31
Total number of days with different AQI categories in last 226 days in 2025 (139 days remaining)
Good
194 DaysModerate
31 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 226 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Groton, Connecticut, United States
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
24AQI
24AQI
2nd January 2025
18AQI
18AQI
3rd January 2025
19AQI
19AQI
4th January 2025
19AQI
19AQI
5th January 2025
20AQI
20AQI
6th January 2025
19AQI
19AQI
7th January 2025
19AQI
19AQI
8th January 2025
19AQI
19AQI
9th January 2025
20AQI
20AQI
10th January 2025
21AQI
21AQI
11th January 2025
24AQI
24AQI
12th January 2025
28AQI
28AQI
13th January 2025
52AQI
52AQI
14th January 2025
25AQI
25AQI
15th January 2025
21AQI
21AQI
16th January 2025
32AQI
32AQI
17th January 2025
55AQI
55AQI
18th January 2025
38AQI
38AQI
19th January 2025
30AQI
30AQI
20th January 2025
21AQI
21AQI
21st January 2025
30AQI
30AQI
22nd January 2025
38AQI
38AQI
23rd January 2025
52AQI
52AQI
24th January 2025
53AQI
53AQI
25th January 2025
44AQI
44AQI
26th January 2025
41AQI
41AQI
27th January 2025
27AQI
27AQI
28th January 2025
26AQI
26AQI
29th January 2025
26AQI
26AQI
30th January 2025
22AQI
22AQI
31st January 2025
30AQI
30AQI
1st February 2025
22AQI
22AQI
2nd February 2025
21AQI
21AQI
3rd February 2025
41AQI
41AQI
4th February 2025
27AQI
27AQI
5th February 2025
22AQI
22AQI
6th February 2025
29AQI
29AQI
7th February 2025
30AQI
30AQI
8th February 2025
22AQI
22AQI
9th February 2025
24AQI
24AQI
10th February 2025
34AQI
34AQI
11th February 2025
34AQI
34AQI
12th February 2025
33AQI
33AQI
13th February 2025
21AQI
21AQI
14th February 2025
21AQI
21AQI
15th February 2025
22AQI
22AQI
16th February 2025
21AQI
21AQI
17th February 2025
23AQI
23AQI
18th February 2025
23AQI
23AQI
19th February 2025
23AQI
23AQI
20th February 2025
22AQI
22AQI
21st February 2025
22AQI
22AQI
22nd February 2025
25AQI
25AQI
23rd February 2025
45AQI
45AQI
24th February 2025
45AQI
45AQI
25th February 2025
41AQI
41AQI
26th February 2025
29AQI
29AQI
27th February 2025
44AQI
44AQI
28th February 2025
24AQI
24AQI
1st March 2025
29AQI
29AQI
2nd March 2025
22AQI
22AQI
3rd March 2025
24AQI
24AQI
4th March 2025
41AQI
41AQI
5th March 2025
35AQI
35AQI
6th March 2025
22AQI
22AQI
7th March 2025
21AQI
21AQI
8th March 2025
21AQI
21AQI
9th March 2025
22AQI
22AQI
10th March 2025
29AQI
29AQI
11th March 2025
27AQI
27AQI
12th March 2025
21AQI
21AQI
13th March 2025
21AQI
21AQI
14th March 2025
25AQI
25AQI
15th March 2025
21AQI
21AQI
16th March 2025
32AQI
32AQI
17th March 2025
16AQI
16AQI
18th March 2025
17AQI
17AQI
19th March 2025
23AQI
23AQI
20th March 2025
15AQI
15AQI
21st March 2025
14AQI
14AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
17AQI
17AQI
24th March 2025
23AQI
23AQI
25th March 2025
36AQI
36AQI
26th March 2025
20AQI
20AQI
27th March 2025
18AQI
18AQI
28th March 2025
29AQI
29AQI
29th March 2025
37AQI
37AQI
30th March 2025
24AQI
24AQI
31st March 2025
30AQI
30AQI
1st April 2025
16AQI
16AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
36AQI
36AQI
4th April 2025
30AQI
30AQI
5th April 2025
19AQI
19AQI
6th April 2025
15AQI
15AQI
7th April 2025
17AQI
17AQI
8th April 2025
15AQI
15AQI
9th April 2025
16AQI
16AQI
10th April 2025
26AQI
26AQI
11th April 2025
19AQI
19AQI
12th April 2025
14AQI
14AQI
13th April 2025
17AQI
17AQI
14th April 2025
21AQI
21AQI
15th April 2025
40AQI
40AQI
16th April 2025
11AQI
11AQI
17th April 2025
17AQI
17AQI
18th April 2025
22AQI
22AQI
19th April 2025
56AQI
56AQI
20th April 2025
25AQI
25AQI
21st April 2025
17AQI
17AQI
22nd April 2025
38AQI
38AQI
23rd April 2025
20AQI
20AQI
24th April 2025
26AQI
26AQI
25th April 2025
34AQI
34AQI
26th April 2025
36AQI
36AQI
27th April 2025
11AQI
11AQI
28th April 2025
16AQI
16AQI
29th April 2025
25AQI
25AQI
30th April 2025
26AQI
26AQI
1st May 2025
17AQI
17AQI
2nd May 2025
42AQI
42AQI
3rd May 2025
53AQI
53AQI
4th May 2025
36AQI
36AQI
5th May 2025
20AQI
20AQI
6th May 2025
25AQI
25AQI
7th May 2025
26AQI
26AQI
8th May 2025
25AQI
25AQI
9th May 2025
24AQI
24AQI
10th May 2025
13AQI
13AQI
11th May 2025
23AQI
23AQI
12th May 2025
23AQI
23AQI
13th May 2025
28AQI
28AQI
14th May 2025
28AQI
28AQI
15th May 2025
26AQI
26AQI
16th May 2025
27AQI
27AQI
17th May 2025
36AQI
36AQI
18th May 2025
19AQI
19AQI
19th May 2025
13AQI
13AQI
20th May 2025
12AQI
12AQI
21st May 2025
16AQI
16AQI
22nd May 2025
13AQI
13AQI
23rd May 2025
14AQI
14AQI
24th May 2025
14AQI
14AQI
25th May 2025
13AQI
13AQI
26th May 2025
18AQI
18AQI
27th May 2025
23AQI
23AQI
28th May 2025
20AQI
20AQI
29th May 2025
17AQI
17AQI
30th May 2025
32AQI
32AQI
31st May 2025
20AQI
20AQI
1st June 2025
16AQI
16AQI
2nd June 2025
19AQI
19AQI
3rd June 2025
23AQI
23AQI
4th June 2025
34AQI
34AQI
5th June 2025
53AQI
53AQI
6th June 2025
54AQI
54AQI
7th June 2025
30AQI
30AQI
8th June 2025
58AQI
58AQI
9th June 2025
64AQI
64AQI
10th June 2025
26AQI
26AQI
11th June 2025
43AQI
43AQI
12th June 2025
62AQI
62AQI
13th June 2025
65AQI
65AQI
14th June 2025
55AQI
55AQI
15th June 2025
35AQI
35AQI
16th June 2025
34AQI
34AQI
17th June 2025
24AQI
24AQI
18th June 2025
19AQI
19AQI
19th June 2025
24AQI
24AQI
20th June 2025
31AQI
31AQI
21st June 2025
52AQI
52AQI
22nd June 2025
53AQI
53AQI
23rd June 2025
54AQI
54AQI
24th June 2025
58AQI
58AQI
25th June 2025
52AQI
52AQI
26th June 2025
44AQI
44AQI
27th June 2025
24AQI
24AQI
28th June 2025
28AQI
28AQI
29th June 2025
40AQI
40AQI
30th June 2025
34AQI
34AQI
1st July 2025
39AQI
39AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
41AQI
41AQI
4th July 2025
43AQI
43AQI
5th July 2025
60AQI
60AQI
6th July 2025
58AQI
58AQI
7th July 2025
43AQI
43AQI
8th July 2025
46AQI
46AQI
9th July 2025
34AQI
34AQI
10th July 2025
32AQI
32AQI
11th July 2025
28AQI
28AQI
12th July 2025
25AQI
25AQI
13th July 2025
22AQI
22AQI
14th July 2025
23AQI
23AQI
15th July 2025
24AQI
24AQI
16th July 2025
34AQI
34AQI
17th July 2025
38AQI
38AQI
18th July 2025
21AQI
21AQI
19th July 2025
22AQI
22AQI
20th July 2025
21AQI
21AQI
21st July 2025
38AQI
38AQI
22nd July 2025
23AQI
23AQI
23rd July 2025
23AQI
23AQI
24th July 2025
25AQI
25AQI
25th July 2025
42AQI
42AQI
26th July 2025
69AQI
69AQI
27th July 2025
81AQI
81AQI
28th July 2025
64AQI
64AQI
29th July 2025
59AQI
59AQI
30th July 2025
53AQI
53AQI
31st July 2025
62AQI
62AQI
1st August 2025
52AQI
52AQI
2nd August 2025
35AQI
35AQI
3rd August 2025
44AQI
44AQI
4th August 2025
53AQI
53AQI
5th August 2025
83AQI
83AQI
6th August 2025
64AQI
64AQI
7th August 2025
49AQI
49AQI
8th August 2025
31AQI
31AQI
9th August 2025
32AQI
32AQI
10th August 2025
34AQI
34AQI
11th August 2025
46AQI
46AQI
12th August 2025
51AQI
51AQI
13th August 2025
39AQI
39AQI
29AQI
28AQI
24AQI
23AQI
23AQI
40AQI
39AQI
47AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202531AQI
27
4
28
31
29
1
30
1
18
12
23
8
8
5
194
31
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
May23AQI
202424AQI
31
29
31
30
31
30
28
2
26
5
30
30
1
30
30
1
356
9
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
March19AQI
202331AQI
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 recorded in
June48AQI
Lowest AQI recorded in
November23AQI
202227AQI
27
4
20
1
30
1
29
1
30
1
30
19
4
1
29
31
29
1
30
1
305
14
Highest AQI recorded in
July35AQI
Lowest AQI recorded in
April22AQI
202130AQI
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 recorded in
July42AQI
Lowest AQI recorded in
May24AQI
202030AQI
16
2
18
30
31
31
28
2
28
2
1
26
4
26
5
234
15
1
Highest AQI recorded in
July34AQI
Lowest AQI recorded in
September24AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
31AQILeast Polluted Year Recorded
2024(Avg.)
24AQIGroton's annual 2025 AQI (31) shows an average percentage change of 8.3% (worsened AQI) compared to previous years: 2020 (30), 2021 (30), 2022 (27), 2023 (31), 2024 (24).
