Danbury, 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
Danbury, Connecticut, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
104AQILowest AQI recorded on
20th Aug 2024
13AQISame Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 104 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Danbury, Connecticut, United States
AQI
Day
Night
.
5 AM5th Aug 2025
8 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
2PM5th Aug
119AQI
Avg. Lowest Time
8PM5th Aug
99AQI
Night time
Avg. Highest Time
10PM5th Aug
91AQI
Avg. Lowest Time
12AM6th Aug
87AQI
In the last 24 hours,
Danbury's AQI reached its highest point of 119 at 2 PM during the Day, while the lowest point, undefined, was recorded at 4 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Danbury, Connecticut, United States
JulAug
07th - 08th08th - 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
7th Jul 2025405 AMAQI
7th Jul 2025386 AMAQI
7th Jul 2025387 AMAQI
7th Jul 2025388 AMAQI
7th Jul 2025389 AMAQI
7th Jul 20253810 AMAQI
7th Jul 20253811 AMAQI
7th Jul 20254012 PMAQI
7th Jul 2025381 PMAQI
7th Jul 2025382 PMAQI
7th Jul 2025403 PMAQI
7th Jul 2025394 PMAQI
7th Jul 2025415 PMAQI
7th Jul 2025396 PMAQI
7th Jul 2025407 PMAQI
7th Jul 2025408 PMAQI
7th Jul 2025389 PMAQI
7th Jul 20253610 PMAQI
7th Jul 20253711 PMAQI
8th Jul 20253812 AMAQI
8th Jul 2025341 AMAQI
8th Jul 2025332 AMAQI
8th Jul 2025363 AMAQI
8th Jul 2025404 AMAQI
25°C22/29°C
8th Jul 2025465 AMAQI
8th Jul 2025436 AMAQI
8th Jul 2025467 AMAQI
8th Jul 2025448 AMAQI
8th Jul 2025399 AMAQI
8th Jul 20254010 AMAQI
8th Jul 20254011 AMAQI
8th Jul 20253812 PMAQI
8th Jul 2025371 PMAQI
8th Jul 2025362 PMAQI
8th Jul 2025373 PMAQI
8th Jul 2025374 PMAQI
8th Jul 2025385 PMAQI
8th Jul 2025376 PMAQI
8th Jul 2025367 PMAQI
8th Jul 2025388 PMAQI
8th Jul 2025369 PMAQI
8th Jul 20253810 PMAQI
8th Jul 20253511 PMAQI
9th Jul 20253312 AMAQI
9th Jul 2025261 AMAQI
9th Jul 2025282 AMAQI
9th Jul 2025283 AMAQI
9th Jul 2025304 AMAQI
27°C23/32°C
9th Jul 2025315 AMAQI
9th Jul 2025326 AMAQI
9th Jul 2025307 AMAQI
9th Jul 2025278 AMAQI
9th Jul 2025239 AMAQI
9th Jul 20252410 AMAQI
9th Jul 20252211 AMAQI
9th Jul 20252312 PMAQI
9th Jul 2025241 PMAQI
9th Jul 2025242 PMAQI
9th Jul 2025273 PMAQI
9th Jul 2025284 PMAQI
9th Jul 2025275 PMAQI
9th Jul 2025286 PMAQI
9th Jul 2025277 PMAQI
9th Jul 2025288 PMAQI
9th Jul 2025309 PMAQI
9th Jul 20253310 PMAQI
9th Jul 20253511 PMAQI
10th Jul 20253712 AMAQI
10th Jul 2025421 AMAQI
10th Jul 2025402 AMAQI
10th Jul 2025383 AMAQI
10th Jul 2025364 AMAQI
25°C21/30°C
10th Jul 2025345 AMAQI
10th Jul 2025346 AMAQI
10th Jul 2025367 AMAQI
10th Jul 2025368 AMAQI
10th Jul 2025369 AMAQI
10th Jul 20253310 AMAQI
10th Jul 20253111 AMAQI
10th Jul 20253012 PMAQI
10th Jul 2025301 PMAQI
10th Jul 2025322 PMAQI
10th Jul 2025363 PMAQI
10th Jul 2025344 PMAQI
10th Jul 2025345 PMAQI
10th Jul 2025356 PMAQI
10th Jul 2025347 PMAQI
10th Jul 2025368 PMAQI
10th Jul 2025339 PMAQI
10th Jul 20253410 PMAQI
10th Jul 20253411 PMAQI
11th Jul 20253212 AMAQI
11th Jul 2025281 AMAQI
11th Jul 2025322 AMAQI
11th Jul 2025313 AMAQI
11th Jul 2025304 AMAQI
25°C22/29°C
11th Jul 2025305 AMAQI
11th Jul 2025306 AMAQI
11th Jul 2025327 AMAQI
11th Jul 2025358 AMAQI
11th Jul 2025369 AMAQI
11th Jul 20253810 AMAQI
11th Jul 20254011 AMAQI
11th Jul 20254212 PMAQI
11th Jul 2025421 PMAQI
11th Jul 2025422 PMAQI
11th Jul 2025403 PMAQI
11th Jul 2025404 PMAQI
11th Jul 2025395 PMAQI
11th Jul 2025386 PMAQI
11th Jul 2025367 PMAQI
11th Jul 2025358 PMAQI
11th Jul 2025369 PMAQI
11th Jul 20253610 PMAQI
11th Jul 20253811 PMAQI
12th Jul 20253612 AMAQI
12th Jul 2025371 AMAQI
12th Jul 2025362 AMAQI
12th Jul 2025343 AMAQI
12th Jul 2025344 AMAQI
24°C21/28°C
12th Jul 2025325 AMAQI
12th Jul 2025366 AMAQI
12th Jul 2025367 AMAQI
12th Jul 2025388 AMAQI
12th Jul 2025359 AMAQI
12th Jul 20253610 AMAQI
12th Jul 20253811 AMAQI
12th Jul 20253812 PMAQI
12th Jul 2025391 PMAQI
12th Jul 2025392 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025374 PMAQI
12th Jul 2025355 PMAQI
12th Jul 2025356 PMAQI
12th Jul 2025357 PMAQI
12th Jul 2025368 PMAQI
12th Jul 2025329 PMAQI
12th Jul 20253110 PMAQI
12th Jul 20253111 PMAQI
13th Jul 20253012 AMAQI
13th Jul 2025261 AMAQI
13th Jul 2025252 AMAQI
13th Jul 2025233 AMAQI
13th Jul 2025204 AMAQI
23°C20/27°C
13th Jul 2025295 AMAQI
13th Jul 2025216 AMAQI
13th Jul 2025287 AMAQI
13th Jul 2025228 AMAQI
13th Jul 2025259 AMAQI
13th Jul 20252010 AMAQI
13th Jul 20251911 AMAQI
13th Jul 20252012 PMAQI
13th Jul 2025191 PMAQI
13th Jul 2025202 PMAQI
13th Jul 2025213 PMAQI
13th Jul 2025224 PMAQI
13th Jul 2025325 PMAQI
13th Jul 2025236 PMAQI
13th Jul 2025237 PMAQI
13th Jul 2025238 PMAQI
13th Jul 2025229 PMAQI
13th Jul 20252410 PMAQI
13th Jul 20252411 PMAQI
14th Jul 20252212 AMAQI
14th Jul 2025201 AMAQI
14th Jul 2025202 AMAQI
14th Jul 2025203 AMAQI
14th Jul 2025214 AMAQI
23°C20/28°C
14th Jul 2025225 AMAQI
14th Jul 2025226 AMAQI
14th Jul 2025227 AMAQI
14th Jul 2025218 AMAQI
14th Jul 2025239 AMAQI
14th Jul 20252210 AMAQI
14th Jul 20252311 AMAQI
14th Jul 20252512 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025302 PMAQI
14th Jul 2025283 PMAQI
14th Jul 2025274 PMAQI
14th Jul 2025245 PMAQI
14th Jul 2025246 PMAQI
14th Jul 2025247 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025239 PMAQI
14th Jul 20252210 PMAQI
14th Jul 20252411 PMAQI
15th Jul 20252512 AMAQI
15th Jul 2025221 AMAQI
15th Jul 2025222 AMAQI
15th Jul 2025233 AMAQI
15th Jul 2025224 AMAQI
23°C20/26°C
15th Jul 2025245 AMAQI
15th Jul 2025246 AMAQI
15th Jul 2025247 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025229 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20252211 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025272 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025264 PMAQI
15th Jul 2025245 PMAQI
15th Jul 2025256 PMAQI
15th Jul 2025267 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025279 PMAQI
15th Jul 20253010 PMAQI
15th Jul 20252811 PMAQI
16th Jul 20252812 AMAQI
16th Jul 2025291 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025323 AMAQI
16th Jul 2025344 AMAQI
25°C21/32°C
16th Jul 2025345 AMAQI
16th Jul 2025356 AMAQI
16th Jul 2025387 AMAQI
16th Jul 2025408 AMAQI
16th Jul 2025409 AMAQI
16th Jul 20253710 AMAQI
16th Jul 20253411 AMAQI
16th Jul 20253812 PMAQI
16th Jul 2025371 PMAQI
16th Jul 2025382 PMAQI
16th Jul 2025393 PMAQI
16th Jul 2025404 PMAQI
16th Jul 2025415 PMAQI
16th Jul 2025416 PMAQI
16th Jul 2025417 PMAQI
16th Jul 2025388 PMAQI
16th Jul 2025389 PMAQI
16th Jul 20253810 PMAQI
16th Jul 20253811 PMAQI
17th Jul 20253712 AMAQI
17th Jul 2025361 AMAQI
17th Jul 2025372 AMAQI
17th Jul 2025363 AMAQI
17th Jul 2025364 AMAQI
26°C20/33°C
17th Jul 2025365 AMAQI
17th Jul 2025366 AMAQI
17th Jul 2025377 AMAQI
17th Jul 2025348 AMAQI
17th Jul 2025319 AMAQI
17th Jul 20252710 AMAQI
17th Jul 20252611 AMAQI
17th Jul 20252712 PMAQI
17th Jul 2025281 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025354 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025396 PMAQI
17th Jul 2025377 PMAQI
17th Jul 2025378 PMAQI
17th Jul 2025389 PMAQI
17th Jul 20253510 PMAQI
17th Jul 20253111 PMAQI
18th Jul 20252712 AMAQI
18th Jul 2025181 AMAQI
18th Jul 2025182 AMAQI
18th Jul 2025183 AMAQI
18th Jul 2025174 AMAQI
28°C23/34°C
18th Jul 2025205 AMAQI
18th Jul 2025176 AMAQI
18th Jul 2025187 AMAQI
18th Jul 2025168 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251310 AMAQI
18th Jul 20251211 AMAQI
18th Jul 20251412 PMAQI
18th Jul 2025141 PMAQI
18th Jul 2025142 PMAQI
18th Jul 2025163 PMAQI
18th Jul 2025164 PMAQI
18th Jul 2025165 PMAQI
18th Jul 2025166 PMAQI
18th Jul 2025167 PMAQI
18th Jul 2025178 PMAQI
18th Jul 2025199 PMAQI
18th Jul 20252010 PMAQI
18th Jul 20252111 PMAQI
19th Jul 20252212 AMAQI
19th Jul 2025241 AMAQI
19th Jul 2025242 AMAQI
19th Jul 2025233 AMAQI
19th Jul 2025244 AMAQI
23°C20/27°C
19th Jul 2025205 AMAQI
19th Jul 2025206 AMAQI
19th Jul 2025197 AMAQI
19th Jul 2025208 AMAQI
19th Jul 2025199 AMAQI
19th Jul 20252010 AMAQI
19th Jul 20251911 AMAQI
19th Jul 20252012 PMAQI
19th Jul 2025201 PMAQI
19th Jul 2025202 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025214 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025227 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252310 PMAQI
19th Jul 20252311 PMAQI
20th Jul 20252212 AMAQI
20th Jul 2025191 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025173 AMAQI
20th Jul 2025174 AMAQI
22°C15/28°C
20th Jul 2025195 AMAQI
20th Jul 2025226 AMAQI
20th Jul 2025227 AMAQI
20th Jul 2025248 AMAQI
20th Jul 2025249 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252512 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025313 PMAQI
20th Jul 2025314 PMAQI
20th Jul 2025305 PMAQI
20th Jul 2025336 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025339 PMAQI
20th Jul 20253210 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20252812 AMAQI
21st Jul 2025221 AMAQI
21st Jul 2025202 AMAQI
21st Jul 2025193 AMAQI
21st Jul 2025204 AMAQI
26°C21/32°C
21st Jul 2025205 AMAQI
21st Jul 2025226 AMAQI
21st Jul 2025247 AMAQI
21st Jul 2025258 AMAQI
21st Jul 2025309 AMAQI
21st Jul 20253810 AMAQI
21st Jul 20254611 AMAQI
21st Jul 20255412 PMAQI
21st Jul 2025561 PMAQI
21st Jul 2025552 PMAQI
21st Jul 2025523 PMAQI
21st Jul 2025524 PMAQI
21st Jul 2025525 PMAQI
21st Jul 2025536 PMAQI
21st Jul 2025407 PMAQI
21st Jul 2025378 PMAQI
21st Jul 2025419 PMAQI
21st Jul 20254110 PMAQI
21st Jul 20254011 PMAQI
22nd Jul 20254012 AMAQI
22nd Jul 2025411 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025373 AMAQI
22nd Jul 2025364 AMAQI
23°C19/30°C
22nd Jul 2025335 AMAQI
22nd Jul 2025326 AMAQI
22nd Jul 2025317 AMAQI
22nd Jul 2025288 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252311 AMAQI
22nd Jul 20252312 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025242 PMAQI
22nd Jul 2025273 PMAQI
22nd Jul 2025274 PMAQI
22nd Jul 2025275 PMAQI
22nd Jul 2025266 PMAQI
22nd Jul 2025277 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252710 PMAQI
22nd Jul 20252711 PMAQI
23rd Jul 20252712 AMAQI
23rd Jul 2025271 AMAQI
23rd Jul 2025282 AMAQI
23rd Jul 2025253 AMAQI
23rd Jul 2025244 AMAQI
21°C15/27°C
23rd Jul 2025245 AMAQI
23rd Jul 2025246 AMAQI
23rd Jul 2025267 AMAQI
23rd Jul 2025278 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20252710 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025301 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025313 PMAQI
23rd Jul 2025324 PMAQI
23rd Jul 2025325 PMAQI
23rd Jul 2025326 PMAQI
23rd Jul 2025297 PMAQI
23rd Jul 2025308 PMAQI
23rd Jul 2025299 PMAQI
23rd Jul 20252810 PMAQI
23rd Jul 20252811 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025202 AMAQI
24th Jul 2025183 AMAQI
24th Jul 2025204 AMAQI
22°C16/25°C
24th Jul 2025205 AMAQI
24th Jul 2025226 AMAQI
24th Jul 2025237 AMAQI
24th Jul 2025228 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20253712 PMAQI
24th Jul 2025401 PMAQI
24th Jul 2025412 PMAQI
24th Jul 2025413 PMAQI
24th Jul 2025424 PMAQI
24th Jul 2025415 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025317 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253210 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20253412 AMAQI
25th Jul 2025381 AMAQI
25th Jul 2025482 AMAQI
25th Jul 2025523 AMAQI
25th Jul 2025544 AMAQI
25°C19/32°C
25th Jul 2025535 AMAQI
25th Jul 2025526 AMAQI
25th Jul 2025527 AMAQI
25th Jul 2025528 AMAQI
25th Jul 2025539 AMAQI
25th Jul 20255210 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20255312 PMAQI
25th Jul 2025531 PMAQI
25th Jul 2025532 PMAQI
25th Jul 2025523 PMAQI
25th Jul 2025514 PMAQI
25th Jul 2025495 PMAQI
25th Jul 2025486 PMAQI
25th Jul 2025507 PMAQI
25th Jul 2025488 PMAQI
25th Jul 2025469 PMAQI
25th Jul 20254510 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025271 AMAQI
26th Jul 2025262 AMAQI
26th Jul 2025273 AMAQI
26th Jul 2025264 AMAQI
28°C23/36°C
26th Jul 2025325 AMAQI
26th Jul 2025416 AMAQI
26th Jul 2025487 AMAQI
26th Jul 2025598 AMAQI
26th Jul 2025739 AMAQI
26th Jul 20259610 AMAQI
26th Jul 202510511 AMAQI
26th Jul 202510612 PMAQI
26th Jul 20251041 PMAQI
26th Jul 20251042 PMAQI
26th Jul 2025853 PMAQI
26th Jul 2025884 PMAQI
26th Jul 2025935 PMAQI
26th Jul 2025866 PMAQI
26th Jul 2025787 PMAQI
26th Jul 2025728 PMAQI
26th Jul 2025849 PMAQI
26th Jul 20257410 PMAQI
26th Jul 20257711 PMAQI
27th Jul 20257912 AMAQI
27th Jul 2025961 AMAQI
27th Jul 2025962 AMAQI
27th Jul 20251033 AMAQI
27th Jul 2025894 AMAQI
25°C20/28°C
27th Jul 2025945 AMAQI
27th Jul 2025926 AMAQI
27th Jul 2025937 AMAQI
27th Jul 2025928 AMAQI
27th Jul 2025909 AMAQI
27th Jul 20258910 AMAQI
27th Jul 20259211 AMAQI
27th Jul 20259112 PMAQI
27th Jul 2025901 PMAQI
27th Jul 2025932 PMAQI
27th Jul 2025913 PMAQI
27th Jul 2025874 PMAQI
27th Jul 2025845 PMAQI
27th Jul 2025816 PMAQI
27th Jul 2025907 PMAQI
27th Jul 2025888 PMAQI
27th Jul 2025809 PMAQI
27th Jul 20258110 PMAQI
27th Jul 20258211 PMAQI
28th Jul 20258012 AMAQI
28th Jul 2025751 AMAQI
28th Jul 2025692 AMAQI
28th Jul 2025643 AMAQI
28th Jul 2025564 AMAQI
23°C20/28°C
28th Jul 2025535 AMAQI
28th Jul 2025546 AMAQI
28th Jul 2025567 AMAQI
28th Jul 2025558 AMAQI
28th Jul 2025569 AMAQI
28th Jul 20255410 AMAQI
28th Jul 20255411 AMAQI
28th Jul 20255312 PMAQI
28th Jul 2025531 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025564 PMAQI
28th Jul 2025565 PMAQI
28th Jul 2025566 PMAQI
28th Jul 2025567 PMAQI
28th Jul 2025578 PMAQI
28th Jul 2025579 PMAQI
28th Jul 20255810 PMAQI
28th Jul 20255711 PMAQI
29th Jul 20255712 AMAQI
29th Jul 2025571 AMAQI
29th Jul 2025582 AMAQI
29th Jul 2025593 AMAQI
29th Jul 2025584 AMAQI
26°C20/34°C
29th Jul 2025585 AMAQI
29th Jul 2025606 AMAQI
29th Jul 2025607 AMAQI
29th Jul 2025598 AMAQI
29th Jul 2025609 AMAQI
29th Jul 20255810 AMAQI
29th Jul 20255811 AMAQI
29th Jul 20255612 PMAQI
29th Jul 2025561 PMAQI
29th Jul 2025512 PMAQI
29th Jul 2025563 PMAQI
29th Jul 2025564 PMAQI
29th Jul 2025565 PMAQI
29th Jul 2025566 PMAQI
29th Jul 2025587 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025569 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255611 PMAQI
30th Jul 20255412 AMAQI
30th Jul 2025481 AMAQI
30th Jul 2025482 AMAQI
30th Jul 2025493 AMAQI
30th Jul 2025504 AMAQI
29°C20/36°C
30th Jul 2025515 AMAQI
30th Jul 2025516 AMAQI
30th Jul 2025527 AMAQI
30th Jul 2025528 AMAQI
30th Jul 2025529 AMAQI
30th Jul 20255010 AMAQI
30th Jul 20255011 AMAQI
30th Jul 20255112 PMAQI
30th Jul 2025511 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 2025509 PMAQI
30th Jul 20255010 PMAQI
30th Jul 20255211 PMAQI
31st Jul 20255012 AMAQI
31st Jul 2025441 AMAQI
31st Jul 2025432 AMAQI
31st Jul 2025433 AMAQI
31st Jul 2025424 AMAQI
28°C20/36°C
31st Jul 2025425 AMAQI
31st Jul 2025476 AMAQI
31st Jul 2025527 AMAQI
31st Jul 2025518 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20256010 AMAQI
31st Jul 20256411 AMAQI
31st Jul 20256612 PMAQI
31st Jul 2025681 PMAQI
31st Jul 2025702 PMAQI
31st Jul 2025763 PMAQI
31st Jul 2025784 PMAQI
31st Jul 2025755 PMAQI
31st Jul 2025746 PMAQI
31st Jul 2025547 PMAQI
31st Jul 2025548 PMAQI
31st Jul 2025509 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253311 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025411 AMAQI
1st Aug 2025492 AMAQI
1st Aug 2025483 AMAQI
1st Aug 2025464 AMAQI
24°C18/29°C
1st Aug 2025465 AMAQI
1st Aug 2025456 AMAQI
1st Aug 2025457 AMAQI
1st Aug 2025458 AMAQI
1st Aug 2025449 AMAQI
1st Aug 20254810 AMAQI
1st Aug 20255411 AMAQI
1st Aug 20255612 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025582 PMAQI
1st Aug 2025593 PMAQI
1st Aug 2025584 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025586 PMAQI
1st Aug 2025587 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025589 PMAQI
1st Aug 20255710 PMAQI
1st Aug 20255811 PMAQI
2nd Aug 20256012 AMAQI
2nd Aug 2025601 AMAQI
2nd Aug 2025602 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025594 AMAQI
19°C15/24°C
2nd Aug 2025555 AMAQI
2nd Aug 2025546 AMAQI
2nd Aug 2025487 AMAQI
2nd Aug 2025428 AMAQI
2nd Aug 2025369 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20252411 AMAQI
2nd Aug 20252312 PMAQI
2nd Aug 2025221 PMAQI
2nd Aug 2025232 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025234 PMAQI
2nd Aug 2025225 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025368 PMAQI
2nd Aug 2025439 PMAQI
2nd Aug 20254810 PMAQI
2nd Aug 20255411 PMAQI
3rd Aug 20255412 AMAQI
3rd Aug 2025531 AMAQI
3rd Aug 2025502 AMAQI
3rd Aug 2025443 AMAQI
3rd Aug 2025434 AMAQI
20°C12/25°C
3rd Aug 2025435 AMAQI
3rd Aug 2025416 AMAQI
3rd Aug 2025467 AMAQI
3rd Aug 2025528 AMAQI
3rd Aug 2025539 AMAQI
3rd Aug 20256010 AMAQI
3rd Aug 20256711 AMAQI
3rd Aug 20257212 PMAQI
3rd Aug 2025731 PMAQI
3rd Aug 2025802 PMAQI
3rd Aug 2025803 PMAQI
3rd Aug 2025804 PMAQI
3rd Aug 2025765 PMAQI
3rd Aug 2025806 PMAQI
3rd Aug 2025537 PMAQI
3rd Aug 2025638 PMAQI
3rd Aug 2025719 PMAQI
3rd Aug 20256410 PMAQI
3rd Aug 20256211 PMAQI
4th Aug 20256012 AMAQI
4th Aug 2025601 AMAQI
4th Aug 2025662 AMAQI
4th Aug 2025623 AMAQI
4th Aug 2025624 AMAQI
21°C10/30°C
4th Aug 2025625 AMAQI
4th Aug 2025646 AMAQI
4th Aug 2025627 AMAQI
4th Aug 2025648 AMAQI
4th Aug 2025649 AMAQI
4th Aug 20257410 AMAQI
4th Aug 20258011 AMAQI
4th Aug 20258712 PMAQI
4th Aug 2025891 PMAQI
4th Aug 2025982 PMAQI
4th Aug 2025973 PMAQI
4th Aug 2025964 PMAQI
4th Aug 20251005 PMAQI
4th Aug 20251026 PMAQI
4th Aug 2025727 PMAQI
4th Aug 2025888 PMAQI
4th Aug 20251009 PMAQI
4th Aug 202510110 PMAQI
4th Aug 202510311 PMAQI
5th Aug 202510012 AMAQI
5th Aug 2025951 AMAQI
5th Aug 20251002 AMAQI
5th Aug 20251043 AMAQI
5th Aug 20251074 AMAQI
23°C11/32°C
5th Aug 20251035 AMAQI
5th Aug 20251066 AMAQI
5th Aug 20251087 AMAQI
5th Aug 20251078 AMAQI
5th Aug 20251089 AMAQI
5th Aug 202510910 AMAQI
5th Aug 202511411 AMAQI
5th Aug 202511212 PMAQI
5th Aug 20251131 PMAQI
5th Aug 20251192 PMAQI
5th Aug 20251123 PMAQI
5th Aug 20251084 PMAQI
5th Aug 20251125 PMAQI
5th Aug 20251046 PMAQI
5th Aug 20251017 PMAQI
5th Aug 2025998 PMAQI
5th Aug 2025909 PMAQI
5th Aug 20259110 PMAQI
5th Aug 20259011 PMAQI
6th Aug 20258712 AMAQI
22°C13/29°C
5 AM
12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 6 PM
45AQI
14 hours / Day
420 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 6 PM (Avg. 45), while the lowest AQI was between 5 AM to 8 PM (Avg. 44).
Night time
Avg. Highest Time
9 PM - 11 PM
44AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
1 AM - 4 AM
41AQI
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. 41).
2025 Days Vs Air Quality
Danbury, Connecticut, United States
2025
84%
183
15%
33
0.4%
1
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Good
183 DaysModerate
33 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 218 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
Danbury, 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
19AQI
19AQI
5th January 2025
20AQI
20AQI
6th January 2025
21AQI
21AQI
7th January 2025
20AQI
20AQI
8th January 2025
21AQI
21AQI
9th January 2025
22AQI
22AQI
10th January 2025
24AQI
24AQI
11th January 2025
23AQI
23AQI
12th January 2025
36AQI
36AQI
13th January 2025
50AQI
50AQI
14th January 2025
23AQI
23AQI
15th January 2025
21AQI
21AQI
16th January 2025
36AQI
36AQI
17th January 2025
56AQI
56AQI
18th January 2025
43AQI
43AQI
19th January 2025
31AQI
31AQI
20th January 2025
22AQI
22AQI
21st January 2025
32AQI
32AQI
22nd January 2025
50AQI
50AQI
23rd January 2025
57AQI
57AQI
24th January 2025
55AQI
55AQI
25th January 2025
53AQI
53AQI
26th January 2025
48AQI
48AQI
27th January 2025
32AQI
32AQI
28th January 2025
24AQI
24AQI
29th January 2025
27AQI
27AQI
30th January 2025
24AQI
24AQI
31st January 2025
53AQI
53AQI
1st February 2025
26AQI
26AQI
2nd February 2025
27AQI
27AQI
3rd February 2025
57AQI
57AQI
4th February 2025
27AQI
27AQI
5th February 2025
23AQI
23AQI
6th February 2025
33AQI
33AQI
7th February 2025
29AQI
29AQI
8th February 2025
24AQI
24AQI
9th February 2025
25AQI
25AQI
10th February 2025
29AQI
29AQI
11th February 2025
45AQI
45AQI
12th February 2025
51AQI
51AQI
13th February 2025
22AQI
22AQI
14th February 2025
24AQI
24AQI
15th February 2025
27AQI
27AQI
16th February 2025
24AQI
24AQI
17th February 2025
26AQI
26AQI
18th February 2025
25AQI
25AQI
19th February 2025
25AQI
25AQI
20th February 2025
24AQI
24AQI
21st February 2025
25AQI
25AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
47AQI
47AQI
24th February 2025
53AQI
53AQI
25th February 2025
41AQI
41AQI
26th February 2025
31AQI
31AQI
27th February 2025
38AQI
38AQI
28th February 2025
25AQI
25AQI
1st March 2025
26AQI
26AQI
2nd March 2025
26AQI
26AQI
3rd March 2025
27AQI
27AQI
4th March 2025
45AQI
45AQI
5th March 2025
32AQI
32AQI
6th March 2025
19AQI
19AQI
7th March 2025
24AQI
24AQI
8th March 2025
23AQI
23AQI
9th March 2025
22AQI
22AQI
10th March 2025
29AQI
29AQI
11th March 2025
36AQI
36AQI
12th March 2025
21AQI
21AQI
13th March 2025
23AQI
23AQI
14th March 2025
30AQI
30AQI
15th March 2025
28AQI
28AQI
16th March 2025
31AQI
31AQI
17th March 2025
18AQI
18AQI
18th March 2025
18AQI
18AQI
19th March 2025
26AQI
26AQI
20th March 2025
16AQI
16AQI
21st March 2025
16AQI
16AQI
22nd March 2025
21AQI
21AQI
23rd March 2025
19AQI
19AQI
24th March 2025
25AQI
25AQI
25th March 2025
35AQI
35AQI
26th March 2025
22AQI
22AQI
27th March 2025
19AQI
19AQI
28th March 2025
28AQI
28AQI
29th March 2025
53AQI
53AQI
30th March 2025
33AQI
33AQI
31st March 2025
38AQI
38AQI
1st April 2025
18AQI
18AQI
2nd April 2025
19AQI
19AQI
3rd April 2025
28AQI
28AQI
4th April 2025
25AQI
25AQI
5th April 2025
17AQI
17AQI
6th April 2025
16AQI
16AQI
7th April 2025
18AQI
18AQI
8th April 2025
17AQI
17AQI
9th April 2025
17AQI
17AQI
10th April 2025
29AQI
29AQI
11th April 2025
27AQI
27AQI
12th April 2025
14AQI
14AQI
13th April 2025
16AQI
16AQI
14th April 2025
27AQI
27AQI
15th April 2025
34AQI
34AQI
16th April 2025
12AQI
12AQI
17th April 2025
19AQI
19AQI
18th April 2025
29AQI
29AQI
19th April 2025
55AQI
55AQI
20th April 2025
20AQI
20AQI
21st April 2025
20AQI
20AQI
22nd April 2025
30AQI
30AQI
23rd April 2025
20AQI
20AQI
24th April 2025
40AQI
40AQI
25th April 2025
45AQI
45AQI
26th April 2025
30AQI
30AQI
27th April 2025
10AQI
10AQI
28th April 2025
18AQI
18AQI
29th April 2025
30AQI
30AQI
30th April 2025
21AQI
21AQI
1st May 2025
19AQI
19AQI
2nd May 2025
41AQI
41AQI
3rd May 2025
46AQI
46AQI
4th May 2025
37AQI
37AQI
5th May 2025
15AQI
15AQI
6th May 2025
18AQI
18AQI
7th May 2025
29AQI
29AQI
8th May 2025
25AQI
25AQI
9th May 2025
18AQI
18AQI
10th May 2025
16AQI
16AQI
11th May 2025
29AQI
29AQI
12th May 2025
27AQI
27AQI
13th May 2025
35AQI
35AQI
14th May 2025
31AQI
31AQI
15th May 2025
28AQI
28AQI
16th May 2025
48AQI
48AQI
17th May 2025
43AQI
43AQI
18th May 2025
17AQI
17AQI
19th May 2025
13AQI
13AQI
20th May 2025
12AQI
12AQI
21st May 2025
17AQI
17AQI
22nd May 2025
12AQI
12AQI
23rd May 2025
13AQI
13AQI
24th May 2025
14AQI
14AQI
25th May 2025
14AQI
14AQI
26th May 2025
18AQI
18AQI
27th May 2025
24AQI
24AQI
28th May 2025
23AQI
23AQI
29th May 2025
19AQI
19AQI
30th May 2025
36AQI
36AQI
31st May 2025
18AQI
18AQI
1st June 2025
16AQI
16AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
27AQI
27AQI
4th June 2025
42AQI
42AQI
5th June 2025
62AQI
62AQI
6th June 2025
64AQI
64AQI
7th June 2025
49AQI
49AQI
8th June 2025
62AQI
62AQI
9th June 2025
60AQI
60AQI
10th June 2025
25AQI
25AQI
11th June 2025
51AQI
51AQI
12th June 2025
67AQI
67AQI
13th June 2025
66AQI
66AQI
14th June 2025
61AQI
61AQI
15th June 2025
46AQI
46AQI
16th June 2025
37AQI
37AQI
17th June 2025
26AQI
26AQI
18th June 2025
20AQI
20AQI
19th June 2025
23AQI
23AQI
20th June 2025
28AQI
28AQI
21st June 2025
52AQI
52AQI
22nd June 2025
52AQI
52AQI
23rd June 2025
57AQI
57AQI
24th June 2025
59AQI
59AQI
25th June 2025
50AQI
50AQI
26th June 2025
39AQI
39AQI
27th June 2025
27AQI
27AQI
28th June 2025
26AQI
26AQI
29th June 2025
40AQI
40AQI
30th June 2025
34AQI
34AQI
1st July 2025
40AQI
40AQI
2nd July 2025
32AQI
32AQI
3rd July 2025
45AQI
45AQI
4th July 2025
42AQI
42AQI
5th July 2025
81AQI
81AQI
6th July 2025
60AQI
60AQI
7th July 2025
41AQI
41AQI
8th July 2025
38AQI
38AQI
9th July 2025
28AQI
28AQI
10th July 2025
35AQI
35AQI
11th July 2025
35AQI
35AQI
12th July 2025
35AQI
35AQI
13th July 2025
23AQI
23AQI
14th July 2025
23AQI
23AQI
15th July 2025
25AQI
25AQI
16th July 2025
36AQI
36AQI
17th July 2025
34AQI
34AQI
18th July 2025
17AQI
17AQI
19th July 2025
22AQI
22AQI
20th July 2025
25AQI
25AQI
21st July 2025
36AQI
36AQI
22nd July 2025
30AQI
30AQI
23rd July 2025
28AQI
28AQI
24th July 2025
29AQI
29AQI
25th July 2025
49AQI
49AQI
26th July 2025
66AQI
66AQI
27th July 2025
89AQI
89AQI
28th July 2025
59AQI
59AQI
29th July 2025
57AQI
57AQI
30th July 2025
51AQI
51AQI
31st July 2025
54AQI
54AQI
1st August 2025
51AQI
51AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
60AQI
60AQI
4th August 2025
79AQI
79AQI
5th August 2025
104AQI
104AQI
32AQI
32AQI
27AQI
24AQI
24AQI
43AQI
41AQI
67AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202533AQI
26
5
25
3
30
1
29
1
31
18
12
23
8
1
3
1
183
33
1
Highest AQI recorded in
August67AQI
Lowest AQI recorded in
April24AQI
202428AQI
29
2
26
3
31
30
31
28
1
26
4
25
6
30
28
3
30
28
3
342
22
Highest AQI recorded in
August36AQI
Lowest AQI recorded in
March21AQI
202333AQI
29
2
25
3
29
2
28
2
29
2
20
6
3
1
24
6
1
28
3
27
3
30
1
26
3
22
9
317
42
4
1
Highest AQI recorded in
June52AQI
Lowest AQI recorded in
October25AQI
202229AQI
22
9
18
3
27
4
29
30
1
30
23
1
29
29
2
28
2
24
7
290
28
Highest AQI recorded in
January40AQI
Lowest AQI recorded in
August21AQI
202132AQI
24
5
24
4
30
1
27
3
30
1
28
2
22
7
2
29
2
29
1
31
23
7
20
9
317
42
2
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
October26AQI
202033AQI
13
20
18
30
28
3
30
1
27
3
30
1
23
7
24
5
2
243
20
2
Highest AQI recorded in
December40AQI
Lowest AQI recorded in
March23AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
33AQILeast Polluted Year Recorded
2024(Avg.)
28AQIDanbury's annual 2025 AQI (33) shows an average percentage change of 5.8% (worsened AQI) compared to previous years: 2020 (33), 2021 (32), 2022 (29), 2023 (33), 2024 (28).
