Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Chattanooga, Tennessee, 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

Chattanooga, Tennessee, United States

2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Aug 2024
70AQI
Lowest AQI recorded on
15th Aug 2023
22AQI

Same Day Analysis (7th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 7th Aug - 8th Aug 2025

Chattanooga, Tennessee, United States

AQI
Day
Night
.

6 AM7th Aug 2025

8 PM

5 AM8th Aug 2025

Day time
Avg. Highest Time
12PM7th Aug

43AQI

Avg. Lowest Time
6AM7th Aug

32AQI

Night time
Avg. Highest Time
5AM8th Aug

38AQI

Avg. Lowest Time
2AM8th Aug

33AQI

In the last 24 hours,

Chattanooga's AQI reached its highest point of 43 at 12 PM during the Day, while the lowest point, 32, was recorded at 6 AM during the Day between 7th Aug and 8th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Chattanooga, Tennessee, 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 2025496 AMAQI
9th Jul 2025487 AMAQI
9th Jul 2025488 AMAQI
9th Jul 2025529 AMAQI
9th Jul 20255210 AMAQI
9th Jul 20255211 AMAQI
9th Jul 20255312 PMAQI
9th Jul 2025521 PMAQI
9th Jul 2025522 PMAQI
9th Jul 2025513 PMAQI
9th Jul 2025494 PMAQI
9th Jul 2025505 PMAQI
9th Jul 2025496 PMAQI
9th Jul 2025467 PMAQI
9th Jul 2025488 PMAQI
9th Jul 2025449 PMAQI
9th Jul 20254210 PMAQI
9th Jul 20254211 PMAQI
10th Jul 20254112 AMAQI
10th Jul 2025341 AMAQI
10th Jul 2025362 AMAQI
10th Jul 2025363 AMAQI
10th Jul 2025364 AMAQI
10th Jul 2025345 AMAQI

--°C/°C

10th Jul 2025366 AMAQI
10th Jul 2025367 AMAQI
10th Jul 2025388 AMAQI
10th Jul 2025379 AMAQI
10th Jul 20254010 AMAQI
10th Jul 20254211 AMAQI
10th Jul 20254412 PMAQI
10th Jul 2025421 PMAQI
10th Jul 2025422 PMAQI
10th Jul 2025393 PMAQI
10th Jul 2025384 PMAQI
10th Jul 2025375 PMAQI
10th Jul 2025356 PMAQI
10th Jul 2025357 PMAQI
10th Jul 2025378 PMAQI
10th Jul 2025339 PMAQI
10th Jul 20253310 PMAQI
10th Jul 20253411 PMAQI
11th Jul 20253412 AMAQI
11th Jul 2025341 AMAQI
11th Jul 2025322 AMAQI
11th Jul 2025333 AMAQI
11th Jul 2025344 AMAQI
11th Jul 2025375 AMAQI

27°C22/31°C

11th Jul 2025386 AMAQI
11th Jul 2025367 AMAQI
11th Jul 2025358 AMAQI
11th Jul 2025379 AMAQI
11th Jul 20253810 AMAQI
11th Jul 20254211 AMAQI
11th Jul 20254312 PMAQI
11th Jul 2025431 PMAQI
11th Jul 2025452 PMAQI
11th Jul 2025413 PMAQI
11th Jul 2025414 PMAQI
11th Jul 2025415 PMAQI
11th Jul 2025376 PMAQI
11th Jul 2025367 PMAQI
11th Jul 2025368 PMAQI
11th Jul 2025349 PMAQI
11th Jul 20253610 PMAQI
11th Jul 20254011 PMAQI
12th Jul 20255012 AMAQI
12th Jul 2025461 AMAQI
12th Jul 2025402 AMAQI
12th Jul 2025383 AMAQI
12th Jul 2025364 AMAQI
12th Jul 2025365 AMAQI

28°C23/33°C

12th Jul 2025366 AMAQI
12th Jul 2025367 AMAQI
12th Jul 2025368 AMAQI
12th Jul 2025369 AMAQI
12th Jul 20254010 AMAQI
12th Jul 20254411 AMAQI
12th Jul 20254712 PMAQI
12th Jul 2025511 PMAQI
12th Jul 2025502 PMAQI
12th Jul 2025493 PMAQI
12th Jul 2025514 PMAQI
12th Jul 2025495 PMAQI
12th Jul 2025496 PMAQI
12th Jul 2025457 PMAQI
12th Jul 2025478 PMAQI
12th Jul 2025529 PMAQI
12th Jul 20255110 PMAQI
12th Jul 20255011 PMAQI
13th Jul 20255012 AMAQI
13th Jul 2025491 AMAQI
13th Jul 2025482 AMAQI
13th Jul 2025483 AMAQI
13th Jul 2025504 AMAQI
13th Jul 2025515 AMAQI

28°C21/34°C

13th Jul 2025496 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025528 AMAQI
13th Jul 2025539 AMAQI
13th Jul 20255210 AMAQI
13th Jul 20255211 AMAQI
13th Jul 20255212 PMAQI
13th Jul 2025531 PMAQI
13th Jul 2025512 PMAQI
13th Jul 2025453 PMAQI
13th Jul 2025414 PMAQI
13th Jul 2025405 PMAQI
13th Jul 2025406 PMAQI
13th Jul 2025487 PMAQI
13th Jul 2025488 PMAQI
13th Jul 2025379 PMAQI
13th Jul 20253710 PMAQI
13th Jul 20253611 PMAQI
14th Jul 20253612 AMAQI
14th Jul 2025321 AMAQI
14th Jul 2025282 AMAQI
14th Jul 2025263 AMAQI
14th Jul 2025254 AMAQI
14th Jul 2025255 AMAQI

27°C22/33°C

14th Jul 2025266 AMAQI
14th Jul 2025247 AMAQI
14th Jul 2025278 AMAQI
14th Jul 2025289 AMAQI
14th Jul 20253010 AMAQI
14th Jul 20253411 AMAQI
14th Jul 20253712 PMAQI
14th Jul 2025391 PMAQI
14th Jul 2025382 PMAQI
14th Jul 2025363 PMAQI
14th Jul 2025364 PMAQI
14th Jul 2025345 PMAQI
14th Jul 2025366 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025369 PMAQI
14th Jul 20253610 PMAQI
14th Jul 20253711 PMAQI
15th Jul 20253712 AMAQI
15th Jul 2025371 AMAQI
15th Jul 2025382 AMAQI
15th Jul 2025373 AMAQI
15th Jul 2025374 AMAQI
15th Jul 2025385 AMAQI

28°C21/35°C

15th Jul 2025396 AMAQI
15th Jul 2025397 AMAQI
15th Jul 2025368 AMAQI
15th Jul 2025409 AMAQI
15th Jul 20254010 AMAQI
15th Jul 20254011 AMAQI
15th Jul 20254012 PMAQI
15th Jul 2025401 PMAQI
15th Jul 2025382 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025394 PMAQI
15th Jul 2025385 PMAQI
15th Jul 2025366 PMAQI
15th Jul 2025387 PMAQI
15th Jul 2025388 PMAQI
15th Jul 2025369 PMAQI
15th Jul 20253710 PMAQI
15th Jul 20253611 PMAQI
16th Jul 20253712 AMAQI
16th Jul 2025361 AMAQI
16th Jul 2025362 AMAQI
16th Jul 2025363 AMAQI
16th Jul 2025364 AMAQI
16th Jul 2025365 AMAQI

29°C22/35°C

16th Jul 2025376 AMAQI
16th Jul 2025407 AMAQI
16th Jul 2025418 AMAQI
16th Jul 2025429 AMAQI
16th Jul 20254210 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254412 PMAQI
16th Jul 2025431 PMAQI
16th Jul 2025422 PMAQI
16th Jul 2025403 PMAQI
16th Jul 2025384 PMAQI
16th Jul 2025365 PMAQI
16th Jul 2025346 PMAQI
16th Jul 2025397 PMAQI
16th Jul 2025388 PMAQI
16th Jul 2025369 PMAQI
16th Jul 20253910 PMAQI
16th Jul 20254011 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025391 AMAQI
17th Jul 2025362 AMAQI
17th Jul 2025363 AMAQI
17th Jul 2025364 AMAQI
17th Jul 2025365 AMAQI

30°C24/36°C

17th Jul 2025376 AMAQI
17th Jul 2025387 AMAQI
17th Jul 2025408 AMAQI
17th Jul 2025409 AMAQI
17th Jul 20254210 AMAQI
17th Jul 20254311 AMAQI
17th Jul 20254012 PMAQI
17th Jul 2025371 PMAQI
17th Jul 2025342 PMAQI
17th Jul 2025343 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025367 PMAQI
17th Jul 2025358 PMAQI
17th Jul 2025319 PMAQI
17th Jul 20252910 PMAQI
17th Jul 20252911 PMAQI
18th Jul 20252912 AMAQI
18th Jul 2025281 AMAQI
18th Jul 2025312 AMAQI
18th Jul 2025323 AMAQI
18th Jul 2025304 AMAQI
18th Jul 2025295 AMAQI

30°C23/37°C

18th Jul 2025286 AMAQI
18th Jul 2025287 AMAQI
18th Jul 2025298 AMAQI
18th Jul 2025319 AMAQI
18th Jul 20253010 AMAQI
18th Jul 20252911 AMAQI
18th Jul 20252912 PMAQI
18th Jul 2025281 PMAQI
18th Jul 2025282 PMAQI
18th Jul 2025263 PMAQI
18th Jul 2025264 PMAQI
18th Jul 2025255 PMAQI
18th Jul 2025256 PMAQI
18th Jul 2025287 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025249 PMAQI
18th Jul 20252310 PMAQI
18th Jul 20252311 PMAQI
19th Jul 20252312 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025222 AMAQI
19th Jul 2025223 AMAQI
19th Jul 2025224 AMAQI
19th Jul 2025225 AMAQI

28°C24/33°C

19th Jul 2025236 AMAQI
19th Jul 2025247 AMAQI
19th Jul 2025258 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20253310 AMAQI
19th Jul 20253411 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025376 PMAQI
19th Jul 2025317 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025409 PMAQI
19th Jul 20254010 PMAQI
19th Jul 20253911 PMAQI
20th Jul 20253912 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025392 AMAQI
20th Jul 2025423 AMAQI
20th Jul 2025424 AMAQI
20th Jul 2025425 AMAQI

26°C23/30°C

20th Jul 2025436 AMAQI
20th Jul 2025447 AMAQI
20th Jul 2025468 AMAQI
20th Jul 2025469 AMAQI
20th Jul 20254410 AMAQI
20th Jul 20255011 AMAQI
20th Jul 20255012 PMAQI
20th Jul 2025501 PMAQI
20th Jul 2025492 PMAQI
20th Jul 2025473 PMAQI
20th Jul 2025484 PMAQI
20th Jul 2025485 PMAQI
20th Jul 2025476 PMAQI
20th Jul 2025457 PMAQI
20th Jul 2025448 PMAQI
20th Jul 2025449 PMAQI
20th Jul 20254110 PMAQI
20th Jul 20253911 PMAQI
21st Jul 20253912 AMAQI
21st Jul 2025391 AMAQI
21st Jul 2025382 AMAQI
21st Jul 2025373 AMAQI
21st Jul 2025374 AMAQI
21st Jul 2025395 AMAQI

26°C24/30°C

21st Jul 2025406 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025428 AMAQI
21st Jul 2025439 AMAQI
21st Jul 20254610 AMAQI
21st Jul 20254811 AMAQI
21st Jul 20254912 PMAQI
21st Jul 2025501 PMAQI
21st Jul 2025522 PMAQI
21st Jul 2025503 PMAQI
21st Jul 2025484 PMAQI
21st Jul 2025405 PMAQI
21st Jul 2025396 PMAQI
21st Jul 2025417 PMAQI
21st Jul 2025408 PMAQI
21st Jul 2025399 PMAQI
21st Jul 20253810 PMAQI
21st Jul 20253911 PMAQI
22nd Jul 20254212 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025352 AMAQI
22nd Jul 2025373 AMAQI
22nd Jul 2025364 AMAQI
22nd Jul 2025385 AMAQI

29°C23/35°C

22nd Jul 2025406 AMAQI
22nd Jul 2025367 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025389 AMAQI
22nd Jul 20253810 AMAQI
22nd Jul 20254011 AMAQI
22nd Jul 20254412 PMAQI
22nd Jul 2025491 PMAQI
22nd Jul 2025502 PMAQI
22nd Jul 2025493 PMAQI
22nd Jul 2025474 PMAQI
22nd Jul 2025465 PMAQI
22nd Jul 2025446 PMAQI
22nd Jul 2025407 PMAQI
22nd Jul 2025398 PMAQI
22nd Jul 2025429 PMAQI
22nd Jul 20254410 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254312 AMAQI
23rd Jul 2025411 AMAQI
23rd Jul 2025392 AMAQI
23rd Jul 2025413 AMAQI
23rd Jul 2025404 AMAQI
23rd Jul 2025425 AMAQI

29°C24/35°C

23rd Jul 2025466 AMAQI
23rd Jul 2025467 AMAQI
23rd Jul 2025468 AMAQI
23rd Jul 2025509 AMAQI
23rd Jul 20255210 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20255012 PMAQI
23rd Jul 2025471 PMAQI
23rd Jul 2025452 PMAQI
23rd Jul 2025453 PMAQI
23rd Jul 2025454 PMAQI
23rd Jul 2025465 PMAQI
23rd Jul 2025456 PMAQI
23rd Jul 2025457 PMAQI
23rd Jul 2025458 PMAQI
23rd Jul 2025479 PMAQI
23rd Jul 20254710 PMAQI
23rd Jul 20254711 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025501 AMAQI
24th Jul 2025502 AMAQI
24th Jul 2025513 AMAQI
24th Jul 2025524 AMAQI
24th Jul 2025525 AMAQI

28°C24/32°C

24th Jul 2025526 AMAQI
24th Jul 2025547 AMAQI
24th Jul 2025548 AMAQI
24th Jul 2025549 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255511 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025551 PMAQI
24th Jul 2025542 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025544 PMAQI
24th Jul 2025545 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025547 PMAQI
24th Jul 2025548 PMAQI
24th Jul 2025549 PMAQI
24th Jul 20255310 PMAQI
24th Jul 20255311 PMAQI
25th Jul 20255312 AMAQI
25th Jul 2025521 AMAQI
25th Jul 2025482 AMAQI
25th Jul 2025463 AMAQI
25th Jul 2025444 AMAQI
25th Jul 2025455 AMAQI

29°C22/36°C

25th Jul 2025426 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025408 AMAQI
25th Jul 2025449 AMAQI
25th Jul 20254410 AMAQI
25th Jul 20254411 AMAQI
25th Jul 20254312 PMAQI
25th Jul 2025391 PMAQI
25th Jul 2025382 PMAQI
25th Jul 2025393 PMAQI
25th Jul 2025364 PMAQI
25th Jul 2025345 PMAQI
25th Jul 2025366 PMAQI
25th Jul 2025427 PMAQI
25th Jul 2025428 PMAQI
25th Jul 2025349 PMAQI
25th Jul 20253410 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20253412 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025282 AMAQI
26th Jul 2025283 AMAQI
26th Jul 2025274 AMAQI
26th Jul 2025285 AMAQI

29°C23/36°C

26th Jul 2025286 AMAQI
26th Jul 2025297 AMAQI
26th Jul 2025298 AMAQI
26th Jul 2025309 AMAQI
26th Jul 20253110 AMAQI
26th Jul 20253211 AMAQI
26th Jul 20253512 PMAQI
26th Jul 2025331 PMAQI
26th Jul 2025322 PMAQI
26th Jul 2025323 PMAQI
26th Jul 2025314 PMAQI
26th Jul 2025295 PMAQI
26th Jul 2025296 PMAQI
26th Jul 2025287 PMAQI
26th Jul 2025298 PMAQI
26th Jul 2025299 PMAQI
26th Jul 20253010 PMAQI
26th Jul 20253011 PMAQI
27th Jul 20253012 AMAQI
27th Jul 2025281 AMAQI
27th Jul 2025262 AMAQI
27th Jul 2025263 AMAQI
27th Jul 2025284 AMAQI
27th Jul 2025255 AMAQI

28°C24/33°C

27th Jul 2025266 AMAQI
27th Jul 2025287 AMAQI
27th Jul 2025278 AMAQI
27th Jul 2025269 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252711 AMAQI
27th Jul 20252712 PMAQI
27th Jul 2025271 PMAQI
27th Jul 2025282 PMAQI
27th Jul 2025283 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025275 PMAQI
27th Jul 2025266 PMAQI
27th Jul 2025277 PMAQI
27th Jul 2025288 PMAQI
27th Jul 2025279 PMAQI
27th Jul 20252710 PMAQI
27th Jul 20252711 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025241 AMAQI
28th Jul 2025262 AMAQI
28th Jul 2025283 AMAQI
28th Jul 2025264 AMAQI
28th Jul 2025275 AMAQI

29°C22/37°C

28th Jul 2025286 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025308 AMAQI
28th Jul 2025329 AMAQI
28th Jul 20253410 AMAQI
28th Jul 20253411 AMAQI
28th Jul 20253512 PMAQI
28th Jul 2025341 PMAQI
28th Jul 2025342 PMAQI
28th Jul 2025343 PMAQI
28th Jul 2025334 PMAQI
28th Jul 2025335 PMAQI
28th Jul 2025346 PMAQI
28th Jul 2025307 PMAQI
28th Jul 2025318 PMAQI
28th Jul 2025349 PMAQI
28th Jul 20253410 PMAQI
28th Jul 20253211 PMAQI
29th Jul 20253312 AMAQI
29th Jul 2025331 AMAQI
29th Jul 2025342 AMAQI
29th Jul 2025343 AMAQI
29th Jul 2025364 AMAQI
29th Jul 2025365 AMAQI

29°C24/35°C

29th Jul 2025376 AMAQI
29th Jul 2025357 AMAQI
29th Jul 2025368 AMAQI
29th Jul 2025379 AMAQI
29th Jul 20253810 AMAQI
29th Jul 20253911 AMAQI
29th Jul 20254312 PMAQI
29th Jul 2025431 PMAQI
29th Jul 2025432 PMAQI
29th Jul 2025423 PMAQI
29th Jul 2025414 PMAQI
29th Jul 2025405 PMAQI
29th Jul 2025386 PMAQI
29th Jul 2025387 PMAQI
29th Jul 2025388 PMAQI
29th Jul 2025409 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254211 PMAQI
30th Jul 20254112 AMAQI
30th Jul 2025431 AMAQI
30th Jul 2025412 AMAQI
30th Jul 2025433 AMAQI
30th Jul 2025444 AMAQI
30th Jul 2025445 AMAQI

30°C23/37°C

30th Jul 2025466 AMAQI
30th Jul 2025467 AMAQI
30th Jul 2025468 AMAQI
30th Jul 2025449 AMAQI
30th Jul 20253910 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253112 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025282 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025285 PMAQI
30th Jul 2025286 PMAQI
30th Jul 2025287 PMAQI
30th Jul 2025288 PMAQI
30th Jul 2025299 PMAQI
30th Jul 20253010 PMAQI
30th Jul 20253011 PMAQI
31st Jul 20252912 AMAQI
31st Jul 2025271 AMAQI
31st Jul 2025252 AMAQI
31st Jul 2025253 AMAQI
31st Jul 2025264 AMAQI
31st Jul 2025285 AMAQI

28°C25/31°C

31st Jul 2025286 AMAQI
31st Jul 2025297 AMAQI
31st Jul 2025328 AMAQI
31st Jul 2025349 AMAQI
31st Jul 20253910 AMAQI
31st Jul 20254411 AMAQI
31st Jul 20255112 PMAQI
31st Jul 2025531 PMAQI
31st Jul 2025492 PMAQI
31st Jul 2025443 PMAQI
31st Jul 2025424 PMAQI
31st Jul 2025365 PMAQI
31st Jul 2025346 PMAQI
31st Jul 2025307 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20253410 PMAQI
31st Jul 20253411 PMAQI
1st Aug 20253812 AMAQI
1st Aug 2025401 AMAQI
1st Aug 2025372 AMAQI
1st Aug 2025383 AMAQI
1st Aug 2025374 AMAQI
1st Aug 2025365 AMAQI

29°C23/35°C

1st Aug 2025396 AMAQI
1st Aug 2025407 AMAQI
1st Aug 2025428 AMAQI
1st Aug 2025449 AMAQI
1st Aug 20254710 AMAQI
1st Aug 20255211 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025541 PMAQI
1st Aug 2025532 PMAQI
1st Aug 2025523 PMAQI
1st Aug 2025524 PMAQI
1st Aug 2025525 PMAQI
1st Aug 2025506 PMAQI
1st Aug 2025427 PMAQI
1st Aug 2025378 PMAQI
1st Aug 2025339 PMAQI
1st Aug 20252810 PMAQI
1st Aug 20253211 PMAQI
2nd Aug 20253912 AMAQI
2nd Aug 2025431 AMAQI
2nd Aug 2025442 AMAQI
2nd Aug 2025483 AMAQI
2nd Aug 2025514 AMAQI
2nd Aug 2025535 AMAQI

26°C22/32°C

2nd Aug 2025536 AMAQI
2nd Aug 2025527 AMAQI
2nd Aug 2025498 AMAQI
2nd Aug 2025469 AMAQI
2nd Aug 20254110 AMAQI
2nd Aug 20254211 AMAQI
2nd Aug 20254312 PMAQI
2nd Aug 2025441 PMAQI
2nd Aug 2025452 PMAQI
2nd Aug 2025493 PMAQI
2nd Aug 2025504 PMAQI
2nd Aug 2025485 PMAQI
2nd Aug 2025516 PMAQI
2nd Aug 2025487 PMAQI
2nd Aug 2025468 PMAQI
2nd Aug 2025459 PMAQI
2nd Aug 20254610 PMAQI
2nd Aug 20254611 PMAQI
3rd Aug 20254312 AMAQI
3rd Aug 2025331 AMAQI
3rd Aug 2025302 AMAQI
3rd Aug 2025253 AMAQI
3rd Aug 2025234 AMAQI
3rd Aug 2025225 AMAQI

23°C20/26°C

3rd Aug 2025206 AMAQI
3rd Aug 2025207 AMAQI
3rd Aug 2025188 AMAQI
3rd Aug 2025189 AMAQI
3rd Aug 20251810 AMAQI
3rd Aug 20251811 AMAQI
3rd Aug 20251812 PMAQI
3rd Aug 2025221 PMAQI
3rd Aug 2025162 PMAQI
3rd Aug 2025183 PMAQI
3rd Aug 2025214 PMAQI
3rd Aug 2025255 PMAQI
3rd Aug 2025326 PMAQI
3rd Aug 2025247 PMAQI
3rd Aug 2025288 PMAQI
3rd Aug 2025339 PMAQI
3rd Aug 20253410 PMAQI
3rd Aug 20253711 PMAQI
4th Aug 20253912 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025393 AMAQI
4th Aug 2025374 AMAQI
4th Aug 2025375 AMAQI

21°C20/22°C

4th Aug 2025386 AMAQI
4th Aug 2025387 AMAQI
4th Aug 2025378 AMAQI
4th Aug 2025389 AMAQI
4th Aug 20253910 AMAQI
4th Aug 20253811 AMAQI
4th Aug 20253812 PMAQI
4th Aug 2025361 PMAQI
4th Aug 2025332 PMAQI
4th Aug 2025293 PMAQI
4th Aug 2025214 PMAQI
4th Aug 2025225 PMAQI
4th Aug 2025266 PMAQI
4th Aug 2025377 PMAQI
4th Aug 2025308 PMAQI
4th Aug 2025249 PMAQI
4th Aug 20252210 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20252512 AMAQI
5th Aug 2025241 AMAQI
5th Aug 2025232 AMAQI
5th Aug 2025213 AMAQI
5th Aug 2025224 AMAQI
5th Aug 2025235 AMAQI

21°C17/25°C

5th Aug 2025216 AMAQI
5th Aug 2025227 AMAQI
5th Aug 2025228 AMAQI
5th Aug 2025249 AMAQI
5th Aug 20252410 AMAQI
5th Aug 20252611 AMAQI
5th Aug 20252512 PMAQI
5th Aug 2025251 PMAQI
5th Aug 2025252 PMAQI
5th Aug 2025263 PMAQI
5th Aug 2025244 PMAQI
5th Aug 2025275 PMAQI
5th Aug 2025276 PMAQI
5th Aug 2025247 PMAQI
5th Aug 2025248 PMAQI
5th Aug 2025249 PMAQI
5th Aug 20252410 PMAQI
5th Aug 20252611 PMAQI
6th Aug 20252512 AMAQI
6th Aug 2025231 AMAQI
6th Aug 2025232 AMAQI
6th Aug 2025243 AMAQI
6th Aug 2025254 AMAQI
6th Aug 2025235 AMAQI

22°C18/28°C

6th Aug 2025226 AMAQI
6th Aug 2025227 AMAQI
6th Aug 2025238 AMAQI
6th Aug 2025259 AMAQI
6th Aug 20252510 AMAQI
6th Aug 20252411 AMAQI
6th Aug 20252212 PMAQI
6th Aug 2025241 PMAQI
6th Aug 2025242 PMAQI
6th Aug 2025223 PMAQI
6th Aug 2025264 PMAQI
6th Aug 2025285 PMAQI
6th Aug 2025246 PMAQI
6th Aug 2025237 PMAQI
6th Aug 2025278 PMAQI
6th Aug 2025289 PMAQI
6th Aug 20252710 PMAQI
6th Aug 20252811 PMAQI
7th Aug 20252912 AMAQI
7th Aug 2025291 AMAQI
7th Aug 2025292 AMAQI
7th Aug 2025283 AMAQI
7th Aug 2025294 AMAQI
7th Aug 2025325 AMAQI

26°C21/33°C

7th Aug 2025326 AMAQI
7th Aug 2025347 AMAQI
7th Aug 2025348 AMAQI
7th Aug 2025359 AMAQI
7th Aug 20253710 AMAQI
7th Aug 20253811 AMAQI
7th Aug 20254312 PMAQI
7th Aug 2025421 PMAQI
7th Aug 2025432 PMAQI
7th Aug 2025413 PMAQI
7th Aug 2025394 PMAQI
7th Aug 2025355 PMAQI
7th Aug 2025346 PMAQI
7th Aug 2025347 PMAQI
7th Aug 2025368 PMAQI
7th Aug 2025359 PMAQI
7th Aug 20253610 PMAQI
7th Aug 20253411 PMAQI
8th Aug 20253412 AMAQI
8th Aug 2025341 AMAQI
8th Aug 2025332 AMAQI
8th Aug 2025343 AMAQI
8th Aug 2025364 AMAQI
8th Aug 2025385 AMAQI

26°C22/30°C

8th Aug 2025386 AMAQI
6 AM
8th Aug 2025417 AMAQI
8th Aug 2025428 AMAQI
8th Aug 2025479 AMAQI
8th Aug 20255010 AMAQI
8th Aug 20255211 AMAQI
8th Aug 20255212 PMAQI
8th Aug 2025521 PMAQI
1 PM
8th Aug 2025522 PMAQI
8th Aug 2025523 PMAQI
8th Aug 2025524 PMAQI
8th Aug 2025525 PMAQI
8th Aug 2025526 PMAQI
8th Aug 2025517 PMAQI
8 PM
1 AM
5 AM

25°C20/29°C

Day time
Avg. Highest Time
6 AM - 8 PM

38AQI

15 hours / Day
450 hours / Month
Avg. Lowest Time
6 AM - 8 PM

38AQI

15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 PM (Avg. 38), while the lowest AQI was between 6 AM to 8 PM (Avg. 38).
Night time
Avg. Highest Time
12 AM - 11 PM

36AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM

36AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 36), while the lowest AQI was between 12 AM to 11 PM (Avg. 36).

2025 Days Vs Air Quality

Chattanooga, Tennessee, United States

2025

87%

191

12%

27

0.4%

1

Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)

Good
191 Days
Moderate
27 Days
Poor
1 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 87%

Health Risk Level:

Low

In 2025, 87% of 221 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

Chattanooga, Tennessee, 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
2nd January 2025
30AQI
3rd January 2025
32AQI
4th January 2025
21AQI
5th January 2025
29AQI
6th January 2025
22AQI
7th January 2025
23AQI
8th January 2025
26AQI
9th January 2025
43AQI
10th January 2025
44AQI
11th January 2025
32AQI
12th January 2025
45AQI
13th January 2025
43AQI
14th January 2025
26AQI
15th January 2025
30AQI
16th January 2025
31AQI
17th January 2025
30AQI
18th January 2025
33AQI
19th January 2025
23AQI
20th January 2025
19AQI
21st January 2025
22AQI
22nd January 2025
31AQI
23rd January 2025
40AQI
24th January 2025
34AQI
25th January 2025
37AQI
26th January 2025
46AQI
27th January 2025
41AQI
28th January 2025
33AQI
29th January 2025
34AQI
30th January 2025
42AQI
31st January 2025
29AQI
1st February 2025
25AQI
2nd February 2025
33AQI
3rd February 2025
39AQI
4th February 2025
37AQI
5th February 2025
50AQI
6th February 2025
35AQI
7th February 2025
22AQI
8th February 2025
30AQI
9th February 2025
28AQI
10th February 2025
25AQI
11th February 2025
23AQI
12th February 2025
21AQI
13th February 2025
26AQI
14th February 2025
31AQI
15th February 2025
28AQI
16th February 2025
27AQI
17th February 2025
27AQI
18th February 2025
29AQI
19th February 2025
29AQI
20th February 2025
27AQI
21st February 2025
23AQI
22nd February 2025
34AQI
23rd February 2025
38AQI
24th February 2025
44AQI
25th February 2025
37AQI
26th February 2025
42AQI
27th February 2025
42AQI
28th February 2025
24AQI
1st March 2025
37AQI
2nd March 2025
26AQI
3rd March 2025
30AQI
4th March 2025
36AQI
5th March 2025
25AQI
6th March 2025
25AQI
7th March 2025
31AQI
8th March 2025
35AQI
9th March 2025
26AQI
10th March 2025
30AQI
11th March 2025
35AQI
12th March 2025
55AQI
13th March 2025
59AQI
14th March 2025
49AQI
15th March 2025
38AQI
16th March 2025
36AQI
17th March 2025
23AQI
18th March 2025
32AQI
19th March 2025
44AQI
20th March 2025
24AQI
21st March 2025
22AQI
22nd March 2025
30AQI
23rd March 2025
36AQI
24th March 2025
25AQI
25th March 2025
25AQI
26th March 2025
24AQI
27th March 2025
55AQI
28th March 2025
109AQI
29th March 2025
62AQI
30th March 2025
49AQI
31st March 2025
24AQI
1st April 2025
22AQI
2nd April 2025
44AQI
3rd April 2025
45AQI
4th April 2025
45AQI
5th April 2025
45AQI
6th April 2025
19AQI
7th April 2025
16AQI
8th April 2025
22AQI
9th April 2025
26AQI
10th April 2025
50AQI
11th April 2025
32AQI
12th April 2025
41AQI
13th April 2025
33AQI
14th April 2025
46AQI
15th April 2025
31AQI
16th April 2025
26AQI
17th April 2025
44AQI
18th April 2025
65AQI
19th April 2025
58AQI
20th April 2025
57AQI
21st April 2025
52AQI
22nd April 2025
36AQI
23rd April 2025
37AQI
24th April 2025
32AQI
25th April 2025
46AQI
26th April 2025
30AQI
27th April 2025
27AQI
28th April 2025
44AQI
29th April 2025
53AQI
30th April 2025
54AQI
1st May 2025
48AQI
2nd May 2025
34AQI
3rd May 2025
20AQI
4th May 2025
18AQI
5th May 2025
22AQI
6th May 2025
26AQI
7th May 2025
32AQI
8th May 2025
43AQI
9th May 2025
31AQI
10th May 2025
28AQI
11th May 2025
28AQI
12th May 2025
20AQI
13th May 2025
23AQI
14th May 2025
37AQI
15th May 2025
49AQI
16th May 2025
50AQI
17th May 2025
33AQI
18th May 2025
39AQI
19th May 2025
39AQI
20th May 2025
43AQI
21st May 2025
28AQI
22nd May 2025
18AQI
23rd May 2025
18AQI
24th May 2025
24AQI
25th May 2025
33AQI
26th May 2025
29AQI
27th May 2025
19AQI
28th May 2025
23AQI
29th May 2025
30AQI
30th May 2025
21AQI
31st May 2025
38AQI
1st June 2025
54AQI
2nd June 2025
55AQI
3rd June 2025
61AQI
4th June 2025
66AQI
5th June 2025
56AQI
6th June 2025
49AQI
7th June 2025
37AQI
8th June 2025
30AQI
9th June 2025
36AQI
10th June 2025
36AQI
11th June 2025
58AQI
12th June 2025
60AQI
13th June 2025
38AQI
14th June 2025
26AQI
15th June 2025
29AQI
16th June 2025
37AQI
17th June 2025
24AQI
18th June 2025
26AQI
19th June 2025
26AQI
20th June 2025
31AQI
21st June 2025
35AQI
22nd June 2025
40AQI
23rd June 2025
54AQI
24th June 2025
60AQI
25th June 2025
62AQI
26th June 2025
52AQI
27th June 2025
44AQI
28th June 2025
38AQI
29th June 2025
38AQI
30th June 2025
39AQI
1st July 2025
38AQI
2nd July 2025
31AQI
3rd July 2025
43AQI
4th July 2025
55AQI
5th July 2025
72AQI
6th July 2025
59AQI
7th July 2025
56AQI
8th July 2025
55AQI
9th July 2025
49AQI
10th July 2025
37AQI
11th July 2025
37AQI
12th July 2025
45AQI
13th July 2025
47AQI
14th July 2025
32AQI
15th July 2025
38AQI
16th July 2025
38AQI
17th July 2025
36AQI
18th July 2025
28AQI
19th July 2025
29AQI
20th July 2025
44AQI
21st July 2025
41AQI
22nd July 2025
41AQI
23rd July 2025
45AQI
24th July 2025
53AQI
25th July 2025
42AQI
26th July 2025
30AQI
27th July 2025
27AQI
28th July 2025
31AQI
29th July 2025
38AQI
30th July 2025
36AQI
31st July 2025
34AQI
1st August 2025
42AQI
2nd August 2025
47AQI
3rd August 2025
26AQI
4th August 2025
33AQI
5th August 2025
24AQI
6th August 2025
25AQI
7th August 2025
34AQI

32AQI

31AQI

37AQI

39AQI

30AQI

43AQI

42AQI

33AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202536AQI

31
28
26
4
1
24
6
31
19
11
25
6
7
191
27
1

Highest AQI recorded in

June

43AQI

Lowest AQI recorded in

May

30AQI

202434AQI

28
3
22
7
28
3
23
7
31
26
3
31
19
12
29
1
30
1
27
3
29
2
323
42

Highest AQI recorded in

August

45AQI

Lowest AQI recorded in

January

28AQI

202341AQI

17
8
24
4
21
10
24
6
25
6
12
16
2
22
8
1
23
8
22
7
26
4
20
9
22
9
258
95
3

Highest AQI recorded in

June

60AQI

Lowest AQI recorded in

October

34AQI

202239AQI

13
11
3
24
7
21
9
25
6
18
12
21
3
1
24
5
24
7
19
5
1
26
5
227
62
1

Highest AQI recorded in

June

45AQI

Lowest AQI recorded in

August

30AQI

202138AQI

25
5
27
1
27
4
27
3
25
6
27
3
22
7
6
4
18
13
23
7
19
12
246
65

Highest AQI recorded in

December

47AQI

Lowest AQI recorded in

February

28AQI

202036AQI

11
2
18
2
18
26
4
25
4
31
25
3
24
7
22
7
18
12
218
41

Highest AQI recorded in

December

44AQI

Lowest AQI recorded in

March

29AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
41AQI
Least Polluted Year Recorded
2024(Avg.)
34AQI

Chattanooga's annual 2025 AQI (36) shows an average percentage change of -2.7% (improved AQI) compared to previous years: 2020 (36), 2021 (38), 2022 (39), 2023 (41), 2024 (34).