Waterbury, 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
Waterbury, Connecticut, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
103AQILowest AQI recorded on
20th Aug 2024
11AQISame Day Analysis (7th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 42 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Waterbury, Connecticut, United States
AQI
Day
Night
.
5 AM7th Aug 2025
8 PM
4 AM8th Aug 2025
Day time
Avg. Highest Time
12PM7th Aug
52AQI
Avg. Lowest Time
5AM7th Aug
34AQI
Night time
Avg. Highest Time
10PM7th Aug
41AQI
Avg. Lowest Time
4AM8th Aug
28AQI
In the last 24 hours,
Waterbury's AQI reached its highest point of 52 at 12 PM during the Day, while the lowest point, 28, was recorded at 4 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Waterbury, Connecticut, United States
JulAug
09th - 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 - 07th07th - 08th08th
Day
Night
9th Jul 2025275 AMAQI
9th Jul 2025296 AMAQI
9th Jul 2025317 AMAQI
9th Jul 2025308 AMAQI
9th Jul 2025279 AMAQI
9th Jul 20252610 AMAQI
9th Jul 20252311 AMAQI
9th Jul 20252312 PMAQI
9th Jul 2025241 PMAQI
9th Jul 2025242 PMAQI
9th Jul 2025263 PMAQI
9th Jul 2025284 PMAQI
9th Jul 2025275 PMAQI
9th Jul 2025276 PMAQI
9th Jul 2025287 PMAQI
9th Jul 2025288 PMAQI
9th Jul 2025289 PMAQI
9th Jul 20253010 PMAQI
9th Jul 20253111 PMAQI
10th Jul 20253112 AMAQI
10th Jul 2025301 AMAQI
10th Jul 2025312 AMAQI
10th Jul 2025303 AMAQI
10th Jul 2025314 AMAQI
26°C22/29°C
10th Jul 2025315 AMAQI
10th Jul 2025326 AMAQI
10th Jul 2025317 AMAQI
10th Jul 2025278 AMAQI
10th Jul 2025269 AMAQI
10th Jul 20252710 AMAQI
10th Jul 20252511 AMAQI
10th Jul 20252512 PMAQI
10th Jul 2025251 PMAQI
10th Jul 2025262 PMAQI
10th Jul 2025293 PMAQI
10th Jul 2025304 PMAQI
10th Jul 2025285 PMAQI
10th Jul 2025296 PMAQI
10th Jul 2025297 PMAQI
10th Jul 2025288 PMAQI
10th Jul 2025299 PMAQI
10th Jul 20252910 PMAQI
10th Jul 20253011 PMAQI
11th Jul 20252912 AMAQI
11th Jul 2025261 AMAQI
11th Jul 2025272 AMAQI
11th Jul 2025283 AMAQI
11th Jul 2025274 AMAQI
25°C22/29°C
11th Jul 2025275 AMAQI
11th Jul 2025286 AMAQI
11th Jul 2025287 AMAQI
11th Jul 2025308 AMAQI
11th Jul 2025309 AMAQI
11th Jul 20253310 AMAQI
11th Jul 20253511 AMAQI
11th Jul 20253612 PMAQI
11th Jul 2025381 PMAQI
11th Jul 2025392 PMAQI
11th Jul 2025373 PMAQI
11th Jul 2025384 PMAQI
11th Jul 2025365 PMAQI
11th Jul 2025346 PMAQI
11th Jul 2025327 PMAQI
11th Jul 2025328 PMAQI
11th Jul 2025309 PMAQI
11th Jul 20253010 PMAQI
11th Jul 20253411 PMAQI
12th Jul 20253212 AMAQI
12th Jul 2025311 AMAQI
12th Jul 2025282 AMAQI
12th Jul 2025283 AMAQI
12th Jul 2025274 AMAQI
23°C21/28°C
12th Jul 2025285 AMAQI
12th Jul 2025306 AMAQI
12th Jul 2025307 AMAQI
12th Jul 2025308 AMAQI
12th Jul 2025319 AMAQI
12th Jul 20253510 AMAQI
12th Jul 20253611 AMAQI
12th Jul 20253612 PMAQI
12th Jul 2025361 PMAQI
12th Jul 2025352 PMAQI
12th Jul 2025333 PMAQI
12th Jul 2025324 PMAQI
12th Jul 2025305 PMAQI
12th Jul 2025286 PMAQI
12th Jul 2025307 PMAQI
12th Jul 2025308 PMAQI
12th Jul 2025299 PMAQI
12th Jul 20252810 PMAQI
12th Jul 20252911 PMAQI
13th Jul 20253012 AMAQI
13th Jul 2025231 AMAQI
13th Jul 2025242 AMAQI
13th Jul 2025223 AMAQI
13th Jul 2025194 AMAQI
23°C20/26°C
13th Jul 2025205 AMAQI
13th Jul 2025186 AMAQI
13th Jul 2025187 AMAQI
13th Jul 2025268 AMAQI
13th Jul 2025229 AMAQI
13th Jul 20251710 AMAQI
13th Jul 20252111 AMAQI
13th Jul 20251712 PMAQI
13th Jul 2025181 PMAQI
13th Jul 2025192 PMAQI
13th Jul 2025203 PMAQI
13th Jul 2025214 PMAQI
13th Jul 2025225 PMAQI
13th Jul 2025206 PMAQI
13th Jul 2025217 PMAQI
13th Jul 2025228 PMAQI
13th Jul 2025219 PMAQI
13th Jul 20252210 PMAQI
13th Jul 20252311 PMAQI
14th Jul 20252212 AMAQI
14th Jul 2025201 AMAQI
14th Jul 2025202 AMAQI
14th Jul 2025193 AMAQI
14th Jul 2025204 AMAQI
22°C19/27°C
14th Jul 2025205 AMAQI
14th Jul 2025216 AMAQI
14th Jul 2025227 AMAQI
14th Jul 2025258 AMAQI
14th Jul 2025269 AMAQI
14th Jul 20252610 AMAQI
14th Jul 20252711 AMAQI
14th Jul 20252812 PMAQI
14th Jul 2025301 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025283 PMAQI
14th Jul 2025284 PMAQI
14th Jul 2025275 PMAQI
14th Jul 2025276 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025239 PMAQI
14th Jul 20252210 PMAQI
14th Jul 20252311 PMAQI
15th Jul 20252312 AMAQI
15th Jul 2025211 AMAQI
15th Jul 2025222 AMAQI
15th Jul 2025223 AMAQI
15th Jul 2025234 AMAQI
23°C20/24°C
15th Jul 2025255 AMAQI
15th Jul 2025256 AMAQI
15th Jul 2025257 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025229 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20252311 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025262 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025244 PMAQI
15th Jul 2025255 PMAQI
15th Jul 2025266 PMAQI
15th Jul 2025257 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025269 PMAQI
15th Jul 20252710 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025261 AMAQI
16th Jul 2025282 AMAQI
16th Jul 2025303 AMAQI
16th Jul 2025324 AMAQI
25°C21/31°C
16th Jul 2025325 AMAQI
16th Jul 2025356 AMAQI
16th Jul 2025377 AMAQI
16th Jul 2025358 AMAQI
16th Jul 2025419 AMAQI
16th Jul 20253910 AMAQI
16th Jul 20253611 AMAQI
16th Jul 20253512 PMAQI
16th Jul 2025341 PMAQI
16th Jul 2025362 PMAQI
16th Jul 2025373 PMAQI
16th Jul 2025384 PMAQI
16th Jul 2025395 PMAQI
16th Jul 2025406 PMAQI
16th Jul 2025387 PMAQI
16th Jul 2025388 PMAQI
16th Jul 2025369 PMAQI
16th Jul 20253610 PMAQI
16th Jul 20253611 PMAQI
17th Jul 20253512 AMAQI
17th Jul 2025381 AMAQI
17th Jul 2025392 AMAQI
17th Jul 2025413 AMAQI
17th Jul 2025434 AMAQI
26°C20/34°C
17th Jul 2025445 AMAQI
17th Jul 2025416 AMAQI
17th Jul 2025437 AMAQI
17th Jul 2025428 AMAQI
17th Jul 2025389 AMAQI
17th Jul 20252810 AMAQI
17th Jul 20252811 AMAQI
17th Jul 20252712 PMAQI
17th Jul 2025261 PMAQI
17th Jul 2025282 PMAQI
17th Jul 2025333 PMAQI
17th Jul 2025334 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025377 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025389 PMAQI
17th Jul 20253810 PMAQI
17th Jul 20253411 PMAQI
18th Jul 20253212 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025162 AMAQI
18th Jul 2025173 AMAQI
18th Jul 2025174 AMAQI
27°C23/34°C
18th Jul 2025175 AMAQI
18th Jul 2025186 AMAQI
18th Jul 2025177 AMAQI
18th Jul 2025138 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251310 AMAQI
18th Jul 20251311 AMAQI
18th Jul 20251412 PMAQI
18th Jul 2025141 PMAQI
18th Jul 2025142 PMAQI
18th Jul 2025163 PMAQI
18th Jul 2025174 PMAQI
18th Jul 2025165 PMAQI
18th Jul 2025166 PMAQI
18th Jul 2025157 PMAQI
18th Jul 2025168 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20251810 PMAQI
18th Jul 20251911 PMAQI
19th Jul 20252112 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025212 AMAQI
19th Jul 2025213 AMAQI
19th Jul 2025214 AMAQI
24°C20/29°C
19th Jul 2025205 AMAQI
19th Jul 2025216 AMAQI
19th Jul 2025207 AMAQI
19th Jul 2025198 AMAQI
19th Jul 2025199 AMAQI
19th Jul 20252010 AMAQI
19th Jul 20252011 AMAQI
19th Jul 20252012 PMAQI
19th Jul 2025201 PMAQI
19th Jul 2025202 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025214 PMAQI
19th Jul 2025215 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252310 PMAQI
19th Jul 20252211 PMAQI
20th Jul 20252212 AMAQI
20th Jul 2025171 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025164 AMAQI
22°C13/31°C
20th Jul 2025165 AMAQI
20th Jul 2025166 AMAQI
20th Jul 2025187 AMAQI
20th Jul 2025198 AMAQI
20th Jul 2025199 AMAQI
20th Jul 20251910 AMAQI
20th Jul 20251911 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025231 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025253 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025237 PMAQI
20th Jul 2025228 PMAQI
20th Jul 2025279 PMAQI
20th Jul 20252910 PMAQI
20th Jul 20252911 PMAQI
21st Jul 20252712 AMAQI
21st Jul 2025241 AMAQI
21st Jul 2025232 AMAQI
21st Jul 2025223 AMAQI
21st Jul 2025224 AMAQI
26°C21/32°C
21st Jul 2025235 AMAQI
21st Jul 2025256 AMAQI
21st Jul 2025267 AMAQI
21st Jul 2025268 AMAQI
21st Jul 2025289 AMAQI
21st Jul 20253610 AMAQI
21st Jul 20255111 AMAQI
21st Jul 20255612 PMAQI
21st Jul 2025601 PMAQI
21st Jul 2025562 PMAQI
21st Jul 2025523 PMAQI
21st Jul 2025524 PMAQI
21st Jul 2025525 PMAQI
21st Jul 2025516 PMAQI
21st Jul 2025387 PMAQI
21st Jul 2025368 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254110 PMAQI
21st Jul 20253911 PMAQI
22nd Jul 20253812 AMAQI
22nd Jul 2025351 AMAQI
22nd Jul 2025302 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025254 AMAQI
24°C19/29°C
22nd Jul 2025245 AMAQI
22nd Jul 2025246 AMAQI
22nd Jul 2025267 AMAQI
22nd Jul 2025248 AMAQI
22nd Jul 2025239 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20251911 AMAQI
22nd Jul 20252212 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025232 PMAQI
22nd Jul 2025243 PMAQI
22nd Jul 2025244 PMAQI
22nd Jul 2025225 PMAQI
22nd Jul 2025226 PMAQI
22nd Jul 2025237 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025229 PMAQI
22nd Jul 20252310 PMAQI
22nd Jul 20252411 PMAQI
23rd Jul 20252512 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025232 AMAQI
23rd Jul 2025213 AMAQI
23rd Jul 2025224 AMAQI
21°C15/27°C
23rd Jul 2025215 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025227 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20253310 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025271 PMAQI
23rd Jul 2025282 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025304 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025287 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252710 PMAQI
23rd Jul 20252811 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025231 AMAQI
24th Jul 2025222 AMAQI
24th Jul 2025203 AMAQI
24th Jul 2025204 AMAQI
22°C17/25°C
24th Jul 2025225 AMAQI
24th Jul 2025246 AMAQI
24th Jul 2025257 AMAQI
24th Jul 2025238 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252610 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025381 PMAQI
24th Jul 2025402 PMAQI
24th Jul 2025413 PMAQI
24th Jul 2025414 PMAQI
24th Jul 2025425 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025359 PMAQI
24th Jul 20253310 PMAQI
24th Jul 20253011 PMAQI
25th Jul 20253012 AMAQI
25th Jul 2025321 AMAQI
25th Jul 2025342 AMAQI
25th Jul 2025403 AMAQI
25th Jul 2025494 AMAQI
25°C19/32°C
25th Jul 2025455 AMAQI
25th Jul 2025456 AMAQI
25th Jul 2025487 AMAQI
25th Jul 2025498 AMAQI
25th Jul 2025509 AMAQI
25th Jul 20255010 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20255212 PMAQI
25th Jul 2025521 PMAQI
25th Jul 2025522 PMAQI
25th Jul 2025473 PMAQI
25th Jul 2025424 PMAQI
25th Jul 2025405 PMAQI
25th Jul 2025406 PMAQI
25th Jul 2025427 PMAQI
25th Jul 2025428 PMAQI
25th Jul 2025409 PMAQI
25th Jul 20254110 PMAQI
25th Jul 20254211 PMAQI
26th Jul 20254012 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025322 AMAQI
26th Jul 2025363 AMAQI
26th Jul 2025384 AMAQI
27°C22/35°C
26th Jul 2025445 AMAQI
26th Jul 2025506 AMAQI
26th Jul 2025537 AMAQI
26th Jul 2025638 AMAQI
26th Jul 20251029 AMAQI
26th Jul 202510410 AMAQI
26th Jul 202511511 AMAQI
26th Jul 202511212 PMAQI
26th Jul 20251201 PMAQI
26th Jul 20251122 PMAQI
26th Jul 2025903 PMAQI
26th Jul 2025904 PMAQI
26th Jul 2025965 PMAQI
26th Jul 2025926 PMAQI
26th Jul 2025807 PMAQI
26th Jul 2025828 PMAQI
26th Jul 2025859 PMAQI
26th Jul 20258210 PMAQI
26th Jul 20258811 PMAQI
27th Jul 20258612 AMAQI
27th Jul 2025931 AMAQI
27th Jul 2025982 AMAQI
27th Jul 2025963 AMAQI
27th Jul 2025954 AMAQI
25°C21/29°C
27th Jul 2025955 AMAQI
27th Jul 2025926 AMAQI
27th Jul 2025917 AMAQI
27th Jul 2025958 AMAQI
27th Jul 2025919 AMAQI
27th Jul 20259010 AMAQI
27th Jul 20259211 AMAQI
27th Jul 20259012 PMAQI
27th Jul 2025901 PMAQI
27th Jul 2025962 PMAQI
27th Jul 2025923 PMAQI
27th Jul 2025894 PMAQI
27th Jul 2025885 PMAQI
27th Jul 2025886 PMAQI
27th Jul 2025927 PMAQI
27th Jul 2025918 PMAQI
27th Jul 2025829 PMAQI
27th Jul 20258510 PMAQI
27th Jul 20258411 PMAQI
28th Jul 20258412 AMAQI
28th Jul 2025791 AMAQI
28th Jul 2025772 AMAQI
28th Jul 2025783 AMAQI
28th Jul 2025694 AMAQI
22°C19/25°C
28th Jul 2025695 AMAQI
28th Jul 2025646 AMAQI
28th Jul 2025657 AMAQI
28th Jul 2025628 AMAQI
28th Jul 2025609 AMAQI
28th Jul 20255710 AMAQI
28th Jul 20255611 AMAQI
28th Jul 20255612 PMAQI
28th Jul 2025561 PMAQI
28th Jul 2025582 PMAQI
28th Jul 2025613 PMAQI
28th Jul 2025614 PMAQI
28th Jul 2025605 PMAQI
28th Jul 2025616 PMAQI
28th Jul 2025627 PMAQI
28th Jul 2025608 PMAQI
28th Jul 2025609 PMAQI
28th Jul 20256010 PMAQI
28th Jul 20256111 PMAQI
29th Jul 20256012 AMAQI
29th Jul 2025571 AMAQI
29th Jul 2025582 AMAQI
29th Jul 2025583 AMAQI
29th Jul 2025574 AMAQI
26°C20/34°C
29th Jul 2025565 AMAQI
29th Jul 2025576 AMAQI
29th Jul 2025587 AMAQI
29th Jul 2025588 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20255910 AMAQI
29th Jul 20255711 AMAQI
29th Jul 20255612 PMAQI
29th Jul 2025551 PMAQI
29th Jul 2025562 PMAQI
29th Jul 2025563 PMAQI
29th Jul 2025554 PMAQI
29th Jul 2025565 PMAQI
29th Jul 2025556 PMAQI
29th Jul 2025577 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025569 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255611 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025491 AMAQI
30th Jul 2025482 AMAQI
30th Jul 2025483 AMAQI
30th Jul 2025484 AMAQI
29°C19/37°C
30th Jul 2025495 AMAQI
30th Jul 2025486 AMAQI
30th Jul 2025497 AMAQI
30th Jul 2025498 AMAQI
30th Jul 2025469 AMAQI
30th Jul 20254710 AMAQI
30th Jul 20254511 AMAQI
30th Jul 20254512 PMAQI
30th Jul 2025461 PMAQI
30th Jul 2025502 PMAQI
30th Jul 2025513 PMAQI
30th Jul 2025514 PMAQI
30th Jul 2025515 PMAQI
30th Jul 2025516 PMAQI
30th Jul 2025517 PMAQI
30th Jul 2025518 PMAQI
30th Jul 2025499 PMAQI
30th Jul 20254810 PMAQI
30th Jul 20254811 PMAQI
31st Jul 20254812 AMAQI
31st Jul 2025381 AMAQI
31st Jul 2025402 AMAQI
31st Jul 2025423 AMAQI
31st Jul 2025424 AMAQI
28°C20/36°C
31st Jul 2025435 AMAQI
31st Jul 2025436 AMAQI
31st Jul 2025507 AMAQI
31st Jul 2025528 AMAQI
31st Jul 2025579 AMAQI
31st Jul 20256110 AMAQI
31st Jul 20256511 AMAQI
31st Jul 20256812 PMAQI
31st Jul 2025721 PMAQI
31st Jul 2025742 PMAQI
31st Jul 2025793 PMAQI
31st Jul 2025784 PMAQI
31st Jul 2025755 PMAQI
31st Jul 2025746 PMAQI
31st Jul 2025527 PMAQI
31st Jul 2025548 PMAQI
31st Jul 2025509 PMAQI
31st Jul 20254710 PMAQI
31st Jul 20254211 PMAQI
1st Aug 20254412 AMAQI
1st Aug 2025451 AMAQI
1st Aug 2025442 AMAQI
1st Aug 2025433 AMAQI
1st Aug 2025424 AMAQI
23°C18/29°C
1st Aug 2025385 AMAQI
1st Aug 2025386 AMAQI
1st Aug 2025377 AMAQI
1st Aug 2025368 AMAQI
1st Aug 2025399 AMAQI
1st Aug 20254810 AMAQI
1st Aug 20255711 AMAQI
1st Aug 20256012 PMAQI
1st Aug 2025591 PMAQI
1st Aug 2025622 PMAQI
1st Aug 2025603 PMAQI
1st Aug 2025594 PMAQI
1st Aug 2025595 PMAQI
1st Aug 2025586 PMAQI
1st Aug 2025587 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025559 PMAQI
1st Aug 20255610 PMAQI
1st Aug 20255711 PMAQI
2nd Aug 20255812 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025592 AMAQI
2nd Aug 2025593 AMAQI
2nd Aug 2025584 AMAQI
19°C15/24°C
2nd Aug 2025555 AMAQI
2nd Aug 2025546 AMAQI
2nd Aug 2025487 AMAQI
2nd Aug 2025418 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20252610 AMAQI
2nd Aug 20252411 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025222 PMAQI
2nd Aug 2025213 PMAQI
2nd Aug 2025204 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025216 PMAQI
2nd Aug 2025357 PMAQI
2nd Aug 2025338 PMAQI
2nd Aug 2025329 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253711 PMAQI
3rd Aug 20253812 AMAQI
3rd Aug 2025421 AMAQI
3rd Aug 2025422 AMAQI
3rd Aug 2025403 AMAQI
3rd Aug 2025404 AMAQI
20°C12/25°C
3rd Aug 2025415 AMAQI
3rd Aug 2025376 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025418 AMAQI
3rd Aug 2025479 AMAQI
3rd Aug 20255610 AMAQI
3rd Aug 20256311 AMAQI
3rd Aug 20256812 PMAQI
3rd Aug 2025721 PMAQI
3rd Aug 2025792 PMAQI
3rd Aug 2025763 PMAQI
3rd Aug 2025804 PMAQI
3rd Aug 2025765 PMAQI
3rd Aug 2025766 PMAQI
3rd Aug 2025457 PMAQI
3rd Aug 2025588 PMAQI
3rd Aug 2025689 PMAQI
3rd Aug 20256310 PMAQI
3rd Aug 20256511 PMAQI
4th Aug 20256212 AMAQI
4th Aug 2025601 AMAQI
4th Aug 2025682 AMAQI
4th Aug 2025653 AMAQI
4th Aug 2025664 AMAQI
21°C9/31°C
4th Aug 2025655 AMAQI
4th Aug 2025666 AMAQI
4th Aug 2025647 AMAQI
4th Aug 2025668 AMAQI
4th Aug 2025729 AMAQI
4th Aug 20257810 AMAQI
4th Aug 20258511 AMAQI
4th Aug 20259212 PMAQI
4th Aug 2025961 PMAQI
4th Aug 2025992 PMAQI
4th Aug 20251023 PMAQI
4th Aug 20251024 PMAQI
4th Aug 2025965 PMAQI
4th Aug 2025956 PMAQI
4th Aug 2025697 PMAQI
4th Aug 2025848 PMAQI
4th Aug 20251039 PMAQI
4th Aug 20259810 PMAQI
4th Aug 202510011 PMAQI
5th Aug 202510512 AMAQI
5th Aug 2025961 AMAQI
5th Aug 20251002 AMAQI
5th Aug 20251023 AMAQI
5th Aug 20251054 AMAQI
23°C11/33°C
5th Aug 20251045 AMAQI
5th Aug 20251076 AMAQI
5th Aug 20251057 AMAQI
5th Aug 20251088 AMAQI
5th Aug 20251089 AMAQI
5th Aug 202510810 AMAQI
5th Aug 202510811 AMAQI
5th Aug 202511212 PMAQI
5th Aug 20251101 PMAQI
5th Aug 20251142 PMAQI
5th Aug 20251133 PMAQI
5th Aug 20251104 PMAQI
5th Aug 20251135 PMAQI
5th Aug 20251056 PMAQI
5th Aug 20251017 PMAQI
5th Aug 2025998 PMAQI
5th Aug 2025929 PMAQI
5th Aug 20259110 PMAQI
5th Aug 20259011 PMAQI
6th Aug 20258812 AMAQI
6th Aug 2025911 AMAQI
6th Aug 2025852 AMAQI
6th Aug 2025843 AMAQI
6th Aug 2025844 AMAQI
23°C15/32°C
6th Aug 2025855 AMAQI
6th Aug 2025846 AMAQI
6th Aug 2025837 AMAQI
6th Aug 2025838 AMAQI
6th Aug 2025829 AMAQI
6th Aug 20258310 AMAQI
6th Aug 20258011 AMAQI
6th Aug 20258112 PMAQI
6th Aug 2025821 PMAQI
6th Aug 2025782 PMAQI
6th Aug 2025803 PMAQI
6th Aug 2025754 PMAQI
6th Aug 2025635 PMAQI
6th Aug 2025576 PMAQI
6th Aug 2025847 PMAQI
6th Aug 2025628 PMAQI
6th Aug 2025429 PMAQI
6th Aug 20254210 PMAQI
6th Aug 20254511 PMAQI
7th Aug 20255812 AMAQI
7th Aug 2025361 AMAQI
7th Aug 2025352 AMAQI
7th Aug 2025353 AMAQI
7th Aug 2025344 AMAQI
22°C18/30°C
7th Aug 2025345 AMAQI
7th Aug 2025366 AMAQI
7th Aug 2025407 AMAQI
7th Aug 2025408 AMAQI
7th Aug 2025449 AMAQI
7th Aug 20254810 AMAQI
7th Aug 20255011 AMAQI
7th Aug 20255212 PMAQI
7th Aug 2025521 PMAQI
7th Aug 2025512 PMAQI
7th Aug 2025513 PMAQI
7th Aug 2025504 PMAQI
7th Aug 2025445 PMAQI
7th Aug 2025416 PMAQI
7th Aug 2025407 PMAQI
7th Aug 2025428 PMAQI
7th Aug 2025399 PMAQI
7th Aug 20254110 PMAQI
7th Aug 20254111 PMAQI
8th Aug 20253812 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025282 AMAQI
8th Aug 2025283 AMAQI
8th Aug 2025284 AMAQI
22°C18/29°C
8th Aug 2025285 AMAQI
5 AM8th Aug 2025296 AMAQI
8th Aug 2025307 AMAQI
8th Aug 2025318 AMAQI
8th Aug 2025339 AMAQI
8th Aug 20253410 AMAQI
8th Aug 20253611 AMAQI
8th Aug 20253112 PMAQI
12 PM8th Aug 2025321 PMAQI
8th Aug 2025302 PMAQI
8th Aug 2025323 PMAQI
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
45AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
45AQI
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. 45), while the lowest AQI was between 5 AM to 8 PM (Avg. 45).
Night time
Avg. Highest Time
9 PM - 11 PM
44AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
1 AM - 4 AM
40AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 44), while the lowest AQI was between 1 AM to 4 AM (Avg. 40).
2025 Days Vs Air Quality
Waterbury, Connecticut, United States
2025
87%
191
12%
27
0.4%
1
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Good
191 DaysModerate
27 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 220 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
Waterbury, 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
23AQI
23AQI
2nd January 2025
18AQI
18AQI
3rd January 2025
20AQI
20AQI
4th January 2025
18AQI
18AQI
5th January 2025
19AQI
19AQI
6th January 2025
19AQI
19AQI
7th January 2025
19AQI
19AQI
8th January 2025
20AQI
20AQI
9th January 2025
21AQI
21AQI
10th January 2025
23AQI
23AQI
11th January 2025
23AQI
23AQI
12th January 2025
34AQI
34AQI
13th January 2025
55AQI
55AQI
14th January 2025
28AQI
28AQI
15th January 2025
21AQI
21AQI
16th January 2025
39AQI
39AQI
17th January 2025
60AQI
60AQI
18th January 2025
45AQI
45AQI
19th January 2025
31AQI
31AQI
20th January 2025
21AQI
21AQI
21st January 2025
37AQI
37AQI
22nd January 2025
50AQI
50AQI
23rd January 2025
59AQI
59AQI
24th January 2025
58AQI
58AQI
25th January 2025
50AQI
50AQI
26th January 2025
48AQI
48AQI
27th January 2025
36AQI
36AQI
28th January 2025
25AQI
25AQI
29th January 2025
28AQI
28AQI
30th January 2025
24AQI
24AQI
31st January 2025
44AQI
44AQI
1st February 2025
23AQI
23AQI
2nd February 2025
24AQI
24AQI
3rd February 2025
58AQI
58AQI
4th February 2025
28AQI
28AQI
5th February 2025
22AQI
22AQI
6th February 2025
37AQI
37AQI
7th February 2025
29AQI
29AQI
8th February 2025
24AQI
24AQI
9th February 2025
26AQI
26AQI
10th February 2025
38AQI
38AQI
11th February 2025
48AQI
48AQI
12th February 2025
47AQI
47AQI
13th February 2025
22AQI
22AQI
14th February 2025
22AQI
22AQI
15th February 2025
25AQI
25AQI
16th February 2025
23AQI
23AQI
17th February 2025
24AQI
24AQI
18th February 2025
24AQI
24AQI
19th February 2025
24AQI
24AQI
20th February 2025
22AQI
22AQI
21st February 2025
23AQI
23AQI
22nd February 2025
29AQI
29AQI
23rd February 2025
46AQI
46AQI
24th February 2025
54AQI
54AQI
25th February 2025
43AQI
43AQI
26th February 2025
30AQI
30AQI
27th February 2025
39AQI
39AQI
28th February 2025
24AQI
24AQI
1st March 2025
26AQI
26AQI
2nd March 2025
23AQI
23AQI
3rd March 2025
28AQI
28AQI
4th March 2025
45AQI
45AQI
5th March 2025
33AQI
33AQI
6th March 2025
21AQI
21AQI
7th March 2025
24AQI
24AQI
8th March 2025
23AQI
23AQI
9th March 2025
25AQI
25AQI
10th March 2025
31AQI
31AQI
11th March 2025
33AQI
33AQI
12th March 2025
24AQI
24AQI
13th March 2025
22AQI
22AQI
14th March 2025
25AQI
25AQI
15th March 2025
26AQI
26AQI
16th March 2025
33AQI
33AQI
17th March 2025
17AQI
17AQI
18th March 2025
17AQI
17AQI
19th March 2025
24AQI
24AQI
20th March 2025
17AQI
17AQI
21st March 2025
14AQI
14AQI
22nd March 2025
19AQI
19AQI
23rd March 2025
18AQI
18AQI
24th March 2025
25AQI
25AQI
25th March 2025
33AQI
33AQI
26th March 2025
22AQI
22AQI
27th March 2025
22AQI
22AQI
28th March 2025
29AQI
29AQI
29th March 2025
46AQI
46AQI
30th March 2025
30AQI
30AQI
31st March 2025
40AQI
40AQI
1st April 2025
18AQI
18AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
31AQI
31AQI
4th April 2025
24AQI
24AQI
5th April 2025
18AQI
18AQI
6th April 2025
17AQI
17AQI
7th April 2025
17AQI
17AQI
8th April 2025
16AQI
16AQI
9th April 2025
16AQI
16AQI
10th April 2025
28AQI
28AQI
11th April 2025
22AQI
22AQI
12th April 2025
13AQI
13AQI
13th April 2025
15AQI
15AQI
14th April 2025
27AQI
27AQI
15th April 2025
36AQI
36AQI
16th April 2025
12AQI
12AQI
17th April 2025
17AQI
17AQI
18th April 2025
25AQI
25AQI
19th April 2025
50AQI
50AQI
20th April 2025
19AQI
19AQI
21st April 2025
17AQI
17AQI
22nd April 2025
25AQI
25AQI
23rd April 2025
18AQI
18AQI
24th April 2025
32AQI
32AQI
25th April 2025
42AQI
42AQI
26th April 2025
27AQI
27AQI
27th April 2025
10AQI
10AQI
28th April 2025
17AQI
17AQI
29th April 2025
27AQI
27AQI
30th April 2025
21AQI
21AQI
1st May 2025
18AQI
18AQI
2nd May 2025
35AQI
35AQI
3rd May 2025
45AQI
45AQI
4th May 2025
30AQI
30AQI
5th May 2025
15AQI
15AQI
6th May 2025
17AQI
17AQI
7th May 2025
28AQI
28AQI
8th May 2025
25AQI
25AQI
9th May 2025
18AQI
18AQI
10th May 2025
15AQI
15AQI
11th May 2025
29AQI
29AQI
12th May 2025
24AQI
24AQI
13th May 2025
34AQI
34AQI
14th May 2025
28AQI
28AQI
15th May 2025
28AQI
28AQI
16th May 2025
42AQI
42AQI
17th May 2025
42AQI
42AQI
18th May 2025
18AQI
18AQI
19th May 2025
13AQI
13AQI
20th May 2025
14AQI
14AQI
21st May 2025
16AQI
16AQI
22nd May 2025
12AQI
12AQI
23rd May 2025
12AQI
12AQI
24th May 2025
14AQI
14AQI
25th May 2025
13AQI
13AQI
26th May 2025
18AQI
18AQI
27th May 2025
22AQI
22AQI
28th May 2025
25AQI
25AQI
29th May 2025
18AQI
18AQI
30th May 2025
34AQI
34AQI
31st May 2025
17AQI
17AQI
1st June 2025
16AQI
16AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
26AQI
26AQI
4th June 2025
41AQI
41AQI
5th June 2025
61AQI
61AQI
6th June 2025
62AQI
62AQI
7th June 2025
46AQI
46AQI
8th June 2025
62AQI
62AQI
9th June 2025
65AQI
65AQI
10th June 2025
23AQI
23AQI
11th June 2025
48AQI
48AQI
12th June 2025
67AQI
67AQI
13th June 2025
65AQI
65AQI
14th June 2025
58AQI
58AQI
15th June 2025
42AQI
42AQI
16th June 2025
39AQI
39AQI
17th June 2025
25AQI
25AQI
18th June 2025
19AQI
19AQI
19th June 2025
23AQI
23AQI
20th June 2025
30AQI
30AQI
21st June 2025
52AQI
52AQI
22nd June 2025
52AQI
52AQI
23rd June 2025
54AQI
54AQI
24th June 2025
58AQI
58AQI
25th June 2025
48AQI
48AQI
26th June 2025
40AQI
40AQI
27th June 2025
28AQI
28AQI
28th June 2025
27AQI
27AQI
29th June 2025
40AQI
40AQI
30th June 2025
33AQI
33AQI
1st July 2025
42AQI
42AQI
2nd July 2025
30AQI
30AQI
3rd July 2025
42AQI
42AQI
4th July 2025
40AQI
40AQI
5th July 2025
59AQI
59AQI
6th July 2025
62AQI
62AQI
7th July 2025
40AQI
40AQI
8th July 2025
37AQI
37AQI
9th July 2025
27AQI
27AQI
10th July 2025
29AQI
29AQI
11th July 2025
31AQI
31AQI
12th July 2025
31AQI
31AQI
13th July 2025
21AQI
21AQI
14th July 2025
24AQI
24AQI
15th July 2025
24AQI
24AQI
16th July 2025
35AQI
35AQI
17th July 2025
36AQI
36AQI
18th July 2025
17AQI
17AQI
19th July 2025
21AQI
21AQI
20th July 2025
21AQI
21AQI
21st July 2025
37AQI
37AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
26AQI
26AQI
24th July 2025
29AQI
29AQI
25th July 2025
43AQI
43AQI
26th July 2025
74AQI
74AQI
27th July 2025
91AQI
91AQI
28th July 2025
65AQI
65AQI
29th July 2025
57AQI
57AQI
30th July 2025
49AQI
49AQI
31st July 2025
54AQI
54AQI
1st August 2025
50AQI
50AQI
2nd August 2025
39AQI
39AQI
3rd August 2025
55AQI
55AQI
4th August 2025
81AQI
81AQI
5th August 2025
103AQI
103AQI
6th August 2025
74AQI
74AQI
7th August 2025
42AQI
42AQI
33AQI
31AQI
26AQI
23AQI
23AQI
42AQI
39AQI
63AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202532AQI
27
4
26
2
31
30
31
19
11
24
7
3
3
1
191
27
1
Highest AQI recorded in
August63AQI
Lowest AQI recorded in
April23AQI
202426AQI
28
3
27
2
31
30
31
29
26
4
26
5
30
31
30
28
3
347
17
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
March17AQI
202333AQI
27
4
21
7
29
2
28
2
30
1
21
6
1
2
21
9
1
26
5
26
4
29
2
27
2
22
9
307
53
2
2
Highest AQI recorded in
June52AQI
Lowest AQI recorded in
March26AQI
202231AQI
20
11
16
5
26
5
26
30
1
30
16
7
1
29
31
28
2
25
6
278
37
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
April22AQI
202135AQI
24
5
24
4
27
4
28
2
28
1
25
5
18
10
3
24
5
27
1
30
26
4
21
8
302
49
3
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
May28AQI
202033AQI
13
21
18
30
29
2
31
27
3
30
1
25
5
24
7
248
18
Highest AQI recorded in
December39AQI
Lowest AQI recorded in
March22AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
35AQILeast Polluted Year Recorded
2024(Avg.)
26AQIWaterbury's annual 2025 AQI (32) shows an average percentage change of 2.6% (worsened AQI) compared to previous years: 2020 (33), 2021 (35), 2022 (31), 2023 (33), 2024 (26).
