Athens, Boulder, Colorado, 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
Athens, Boulder, Colorado, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Aug 2021
124AQILowest AQI recorded on
18th Aug 2024
14AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Athens, Boulder, Colorado, United States
AQI
Day
Night
.
5 AM3rd Aug 2025
8 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
9AM3rd Aug
24AQI
Avg. Lowest Time
3PM3rd Aug
19AQI
Night time
Avg. Highest Time
12AM4th Aug
26AQI
Avg. Lowest Time
9PM3rd Aug
22AQI
In the last 24 hours,
Athens's AQI reached its highest point of 26 at 12 AM during the Night, while the lowest point, 19, was recorded at 3 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Athens, Boulder, Colorado, United States
JulAug
05th - 06th06th - 07th07th - 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
Day
Night
5th Jul 2025365 AMAQI
5th Jul 2025346 AMAQI
5th Jul 2025337 AMAQI
5th Jul 2025328 AMAQI
5th Jul 2025329 AMAQI
5th Jul 20253210 AMAQI
5th Jul 20253111 AMAQI
5th Jul 20253012 PMAQI
5th Jul 2025291 PMAQI
5th Jul 2025302 PMAQI
5th Jul 2025323 PMAQI
5th Jul 2025314 PMAQI
5th Jul 2025305 PMAQI
5th Jul 2025336 PMAQI
5th Jul 2025347 PMAQI
5th Jul 2025348 PMAQI
5th Jul 2025339 PMAQI
5th Jul 20253410 PMAQI
5th Jul 20253211 PMAQI
6th Jul 20253312 AMAQI
6th Jul 2025321 AMAQI
6th Jul 2025342 AMAQI
6th Jul 2025343 AMAQI
6th Jul 2025334 AMAQI
--°C/°C
6th Jul 2025295 AMAQI
6th Jul 2025256 AMAQI
6th Jul 2025277 AMAQI
6th Jul 2025288 AMAQI
6th Jul 2025289 AMAQI
6th Jul 20253010 AMAQI
6th Jul 20252811 AMAQI
6th Jul 20252912 PMAQI
6th Jul 2025291 PMAQI
6th Jul 2025292 PMAQI
6th Jul 2025283 PMAQI
6th Jul 2025284 PMAQI
6th Jul 2025285 PMAQI
6th Jul 2025286 PMAQI
6th Jul 2025287 PMAQI
6th Jul 2025288 PMAQI
6th Jul 2025299 PMAQI
6th Jul 20252910 PMAQI
6th Jul 20252911 PMAQI
7th Jul 20252912 AMAQI
7th Jul 2025281 AMAQI
7th Jul 2025282 AMAQI
7th Jul 2025283 AMAQI
7th Jul 2025294 AMAQI
23°C16/32°C
7th Jul 2025245 AMAQI
7th Jul 2025236 AMAQI
7th Jul 2025247 AMAQI
7th Jul 2025248 AMAQI
7th Jul 2025259 AMAQI
7th Jul 20252810 AMAQI
7th Jul 20252911 AMAQI
7th Jul 20252912 PMAQI
7th Jul 2025301 PMAQI
7th Jul 2025302 PMAQI
7th Jul 2025273 PMAQI
7th Jul 2025284 PMAQI
7th Jul 2025275 PMAQI
7th Jul 2025276 PMAQI
7th Jul 2025267 PMAQI
7th Jul 2025318 PMAQI
7th Jul 2025299 PMAQI
7th Jul 20252910 PMAQI
7th Jul 20252911 PMAQI
8th Jul 20253012 AMAQI
8th Jul 2025301 AMAQI
8th Jul 2025312 AMAQI
8th Jul 2025303 AMAQI
8th Jul 2025314 AMAQI
24°C14/34°C
8th Jul 2025325 AMAQI
8th Jul 2025276 AMAQI
8th Jul 2025297 AMAQI
8th Jul 2025298 AMAQI
8th Jul 2025309 AMAQI
8th Jul 20253110 AMAQI
8th Jul 20253211 AMAQI
8th Jul 20253612 PMAQI
8th Jul 2025321 PMAQI
8th Jul 2025322 PMAQI
8th Jul 2025323 PMAQI
8th Jul 2025334 PMAQI
8th Jul 2025325 PMAQI
8th Jul 2025306 PMAQI
8th Jul 2025307 PMAQI
8th Jul 2025298 PMAQI
8th Jul 2025309 PMAQI
8th Jul 20252910 PMAQI
8th Jul 20253211 PMAQI
9th Jul 20253112 AMAQI
9th Jul 2025321 AMAQI
9th Jul 2025292 AMAQI
9th Jul 2025303 AMAQI
9th Jul 2025304 AMAQI
25°C15/35°C
9th Jul 2025265 AMAQI
9th Jul 2025246 AMAQI
9th Jul 2025247 AMAQI
9th Jul 2025258 AMAQI
9th Jul 2025289 AMAQI
9th Jul 20253010 AMAQI
9th Jul 20253311 AMAQI
9th Jul 20253412 PMAQI
9th Jul 2025311 PMAQI
9th Jul 2025272 PMAQI
9th Jul 2025273 PMAQI
9th Jul 2025274 PMAQI
9th Jul 2025265 PMAQI
9th Jul 2025256 PMAQI
9th Jul 2025267 PMAQI
9th Jul 2025298 PMAQI
9th Jul 2025299 PMAQI
9th Jul 20253010 PMAQI
9th Jul 20253011 PMAQI
10th Jul 20253112 AMAQI
10th Jul 2025301 AMAQI
10th Jul 2025282 AMAQI
10th Jul 2025283 AMAQI
10th Jul 2025274 AMAQI
29°C21/37°C
10th Jul 2025225 AMAQI
10th Jul 2025176 AMAQI
10th Jul 2025217 AMAQI
10th Jul 2025218 AMAQI
10th Jul 2025239 AMAQI
10th Jul 20252510 AMAQI
10th Jul 20252711 AMAQI
10th Jul 20252512 PMAQI
10th Jul 2025241 PMAQI
10th Jul 2025262 PMAQI
10th Jul 2025303 PMAQI
10th Jul 2025394 PMAQI
10th Jul 2025475 PMAQI
10th Jul 2025446 PMAQI
10th Jul 2025347 PMAQI
10th Jul 2025308 PMAQI
10th Jul 2025429 PMAQI
10th Jul 20253810 PMAQI
10th Jul 20253811 PMAQI
11th Jul 20253412 AMAQI
11th Jul 2025341 AMAQI
11th Jul 2025352 AMAQI
11th Jul 2025313 AMAQI
11th Jul 2025324 AMAQI
26°C18/32°C
11th Jul 2025385 AMAQI
11th Jul 2025356 AMAQI
11th Jul 2025337 AMAQI
11th Jul 2025348 AMAQI
11th Jul 2025349 AMAQI
11th Jul 20253610 AMAQI
11th Jul 20253711 AMAQI
11th Jul 20253612 PMAQI
11th Jul 2025361 PMAQI
11th Jul 2025352 PMAQI
11th Jul 2025363 PMAQI
11th Jul 2025364 PMAQI
11th Jul 2025375 PMAQI
11th Jul 2025376 PMAQI
11th Jul 2025387 PMAQI
11th Jul 2025388 PMAQI
11th Jul 2025389 PMAQI
11th Jul 20254010 PMAQI
11th Jul 20254711 PMAQI
12th Jul 20255212 AMAQI
12th Jul 2025541 AMAQI
12th Jul 2025542 AMAQI
12th Jul 2025543 AMAQI
12th Jul 2025544 AMAQI
20°C13/27°C
12th Jul 2025665 AMAQI
12th Jul 2025636 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025608 AMAQI
12th Jul 2025609 AMAQI
12th Jul 20256010 AMAQI
12th Jul 20256111 AMAQI
12th Jul 20256112 PMAQI
12th Jul 2025611 PMAQI
12th Jul 2025592 PMAQI
12th Jul 2025593 PMAQI
12th Jul 2025594 PMAQI
12th Jul 2025585 PMAQI
12th Jul 2025576 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025568 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255511 PMAQI
13th Jul 20255512 AMAQI
13th Jul 2025541 AMAQI
13th Jul 2025542 AMAQI
13th Jul 2025543 AMAQI
13th Jul 2025544 AMAQI
20°C12/27°C
13th Jul 2025415 AMAQI
13th Jul 2025416 AMAQI
13th Jul 2025427 AMAQI
13th Jul 2025398 AMAQI
13th Jul 2025409 AMAQI
13th Jul 20254010 AMAQI
13th Jul 20254411 AMAQI
13th Jul 20254812 PMAQI
13th Jul 2025471 PMAQI
13th Jul 2025462 PMAQI
13th Jul 2025463 PMAQI
13th Jul 2025464 PMAQI
13th Jul 2025465 PMAQI
13th Jul 2025456 PMAQI
13th Jul 2025467 PMAQI
13th Jul 2025468 PMAQI
13th Jul 2025449 PMAQI
13th Jul 20254410 PMAQI
13th Jul 20254411 PMAQI
14th Jul 20254612 AMAQI
14th Jul 2025421 AMAQI
14th Jul 2025412 AMAQI
14th Jul 2025383 AMAQI
14th Jul 2025384 AMAQI
25°C17/32°C
14th Jul 2025235 AMAQI
14th Jul 2025226 AMAQI
14th Jul 2025257 AMAQI
14th Jul 2025258 AMAQI
14th Jul 2025279 AMAQI
14th Jul 20252810 AMAQI
14th Jul 20253011 AMAQI
14th Jul 20253212 PMAQI
14th Jul 2025341 PMAQI
14th Jul 2025322 PMAQI
14th Jul 2025323 PMAQI
14th Jul 2025314 PMAQI
14th Jul 2025325 PMAQI
14th Jul 2025326 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025318 PMAQI
14th Jul 2025289 PMAQI
14th Jul 20253010 PMAQI
14th Jul 20252911 PMAQI
15th Jul 20253012 AMAQI
15th Jul 2025301 AMAQI
15th Jul 2025302 AMAQI
15th Jul 2025293 AMAQI
15th Jul 2025304 AMAQI
26°C20/35°C
15th Jul 2025285 AMAQI
15th Jul 2025266 AMAQI
15th Jul 2025287 AMAQI
15th Jul 2025288 AMAQI
15th Jul 2025319 AMAQI
15th Jul 20253510 AMAQI
15th Jul 20253811 AMAQI
15th Jul 20253512 PMAQI
15th Jul 2025321 PMAQI
15th Jul 2025332 PMAQI
15th Jul 2025323 PMAQI
15th Jul 2025324 PMAQI
15th Jul 2025315 PMAQI
15th Jul 2025326 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025318 PMAQI
15th Jul 2025359 PMAQI
15th Jul 20253210 PMAQI
15th Jul 20253311 PMAQI
16th Jul 20253312 AMAQI
16th Jul 2025331 AMAQI
16th Jul 2025332 AMAQI
16th Jul 2025343 AMAQI
16th Jul 2025364 AMAQI
27°C20/35°C
16th Jul 2025385 AMAQI
16th Jul 2025386 AMAQI
16th Jul 2025377 AMAQI
16th Jul 2025388 AMAQI
16th Jul 2025399 AMAQI
16th Jul 20254110 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254212 PMAQI
16th Jul 2025431 PMAQI
16th Jul 2025422 PMAQI
16th Jul 2025443 PMAQI
16th Jul 2025464 PMAQI
16th Jul 2025475 PMAQI
16th Jul 2025496 PMAQI
16th Jul 2025447 PMAQI
16th Jul 2025438 PMAQI
16th Jul 2025459 PMAQI
16th Jul 20254610 PMAQI
16th Jul 20254011 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025381 AMAQI
17th Jul 2025352 AMAQI
17th Jul 2025353 AMAQI
17th Jul 2025354 AMAQI
20°C14/28°C
17th Jul 2025345 AMAQI
17th Jul 2025336 AMAQI
17th Jul 2025377 AMAQI
17th Jul 2025378 AMAQI
17th Jul 2025409 AMAQI
17th Jul 20254610 AMAQI
17th Jul 20254811 AMAQI
17th Jul 20255012 PMAQI
17th Jul 2025511 PMAQI
17th Jul 2025512 PMAQI
17th Jul 2025523 PMAQI
17th Jul 2025534 PMAQI
17th Jul 2025535 PMAQI
17th Jul 2025526 PMAQI
17th Jul 2025477 PMAQI
17th Jul 2025468 PMAQI
17th Jul 2025499 PMAQI
17th Jul 20254510 PMAQI
17th Jul 20254511 PMAQI
18th Jul 20254712 AMAQI
18th Jul 2025441 AMAQI
18th Jul 2025452 AMAQI
18th Jul 2025473 AMAQI
18th Jul 2025454 AMAQI
22°C15/30°C
18th Jul 2025485 AMAQI
18th Jul 2025476 AMAQI
18th Jul 2025507 AMAQI
18th Jul 2025508 AMAQI
18th Jul 2025529 AMAQI
18th Jul 20255310 AMAQI
18th Jul 20255211 AMAQI
18th Jul 20255212 PMAQI
18th Jul 2025531 PMAQI
18th Jul 2025542 PMAQI
18th Jul 2025533 PMAQI
18th Jul 2025534 PMAQI
18th Jul 2025535 PMAQI
18th Jul 2025536 PMAQI
18th Jul 2025527 PMAQI
18th Jul 2025518 PMAQI
18th Jul 2025519 PMAQI
18th Jul 20254910 PMAQI
18th Jul 20255011 PMAQI
19th Jul 20254912 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025482 AMAQI
19th Jul 2025473 AMAQI
19th Jul 2025424 AMAQI
24°C15/34°C
19th Jul 2025365 AMAQI
19th Jul 2025346 AMAQI
19th Jul 2025367 AMAQI
19th Jul 2025368 AMAQI
19th Jul 2025359 AMAQI
19th Jul 20253410 AMAQI
19th Jul 20253811 AMAQI
19th Jul 20254112 PMAQI
19th Jul 2025421 PMAQI
19th Jul 2025422 PMAQI
19th Jul 2025423 PMAQI
19th Jul 2025414 PMAQI
19th Jul 2025405 PMAQI
19th Jul 2025416 PMAQI
19th Jul 2025427 PMAQI
19th Jul 2025448 PMAQI
19th Jul 2025419 PMAQI
19th Jul 20254010 PMAQI
19th Jul 20253911 PMAQI
20th Jul 20253912 AMAQI
20th Jul 2025391 AMAQI
20th Jul 2025392 AMAQI
20th Jul 2025403 AMAQI
20th Jul 2025404 AMAQI
25°C18/33°C
20th Jul 2025285 AMAQI
20th Jul 2025256 AMAQI
20th Jul 2025287 AMAQI
20th Jul 2025298 AMAQI
20th Jul 2025309 AMAQI
20th Jul 20253010 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20252912 PMAQI
20th Jul 2025291 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025323 PMAQI
20th Jul 2025314 PMAQI
20th Jul 2025325 PMAQI
20th Jul 2025326 PMAQI
20th Jul 2025317 PMAQI
20th Jul 2025308 PMAQI
20th Jul 2025309 PMAQI
20th Jul 20252910 PMAQI
20th Jul 20252911 PMAQI
21st Jul 20253112 AMAQI
21st Jul 2025291 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025303 AMAQI
21st Jul 2025284 AMAQI
25°C20/34°C
21st Jul 2025245 AMAQI
21st Jul 2025246 AMAQI
21st Jul 2025267 AMAQI
21st Jul 2025288 AMAQI
21st Jul 2025309 AMAQI
21st Jul 20253210 AMAQI
21st Jul 20253311 AMAQI
21st Jul 20253212 PMAQI
21st Jul 2025321 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025323 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025295 PMAQI
21st Jul 2025306 PMAQI
21st Jul 2025287 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025299 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253112 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025302 AMAQI
22nd Jul 2025303 AMAQI
22nd Jul 2025294 AMAQI
25°C20/34°C
22nd Jul 2025245 AMAQI
22nd Jul 2025226 AMAQI
22nd Jul 2025227 AMAQI
22nd Jul 2025228 AMAQI
22nd Jul 2025239 AMAQI
22nd Jul 20252710 AMAQI
22nd Jul 20252911 AMAQI
22nd Jul 20252712 PMAQI
22nd Jul 2025291 PMAQI
22nd Jul 2025302 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025304 PMAQI
22nd Jul 2025295 PMAQI
22nd Jul 2025286 PMAQI
22nd Jul 2025277 PMAQI
22nd Jul 2025278 PMAQI
22nd Jul 2025259 PMAQI
22nd Jul 20252510 PMAQI
22nd Jul 20252511 PMAQI
23rd Jul 20252512 AMAQI
23rd Jul 2025241 AMAQI
23rd Jul 2025252 AMAQI
23rd Jul 2025253 AMAQI
23rd Jul 2025244 AMAQI
24°C20/33°C
23rd Jul 2025225 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025207 AMAQI
23rd Jul 2025228 AMAQI
23rd Jul 2025239 AMAQI
23rd Jul 20252510 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20252712 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025302 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025294 PMAQI
23rd Jul 2025295 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025247 PMAQI
23rd Jul 2025248 PMAQI
23rd Jul 2025279 PMAQI
23rd Jul 20252710 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025261 AMAQI
24th Jul 2025272 AMAQI
24th Jul 2025303 AMAQI
24th Jul 2025284 AMAQI
22°C17/29°C
24th Jul 2025285 AMAQI
24th Jul 2025286 AMAQI
24th Jul 2025277 AMAQI
24th Jul 2025288 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20252911 AMAQI
24th Jul 20253112 PMAQI
24th Jul 2025351 PMAQI
24th Jul 2025352 PMAQI
24th Jul 2025343 PMAQI
24th Jul 2025344 PMAQI
24th Jul 2025335 PMAQI
24th Jul 2025346 PMAQI
24th Jul 2025317 PMAQI
24th Jul 2025328 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253610 PMAQI
24th Jul 20253711 PMAQI
25th Jul 20253312 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025323 AMAQI
25th Jul 2025334 AMAQI
19°C15/28°C
25th Jul 2025405 AMAQI
25th Jul 2025436 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025428 AMAQI
25th Jul 2025449 AMAQI
25th Jul 20254610 AMAQI
25th Jul 20254511 AMAQI
25th Jul 20254412 PMAQI
25th Jul 2025441 PMAQI
25th Jul 2025432 PMAQI
25th Jul 2025423 PMAQI
25th Jul 2025444 PMAQI
25th Jul 2025475 PMAQI
25th Jul 2025466 PMAQI
25th Jul 2025447 PMAQI
25th Jul 2025418 PMAQI
25th Jul 2025429 PMAQI
25th Jul 20254210 PMAQI
25th Jul 20254211 PMAQI
26th Jul 20254512 AMAQI
26th Jul 2025451 AMAQI
26th Jul 2025442 AMAQI
26th Jul 2025443 AMAQI
26th Jul 2025464 AMAQI
23°C15/33°C
26th Jul 2025495 AMAQI
26th Jul 2025506 AMAQI
26th Jul 2025477 AMAQI
26th Jul 2025488 AMAQI
26th Jul 2025489 AMAQI
26th Jul 20255110 AMAQI
26th Jul 20254911 AMAQI
26th Jul 20255012 PMAQI
26th Jul 2025521 PMAQI
26th Jul 2025492 PMAQI
26th Jul 2025503 PMAQI
26th Jul 2025464 PMAQI
26th Jul 2025465 PMAQI
26th Jul 2025446 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025468 PMAQI
26th Jul 2025389 PMAQI
26th Jul 20254010 PMAQI
26th Jul 20253911 PMAQI
27th Jul 20253912 AMAQI
27th Jul 2025391 AMAQI
27th Jul 2025372 AMAQI
27th Jul 2025373 AMAQI
27th Jul 2025374 AMAQI
24°C18/34°C
27th Jul 2025245 AMAQI
27th Jul 2025206 AMAQI
27th Jul 2025227 AMAQI
27th Jul 2025228 AMAQI
27th Jul 2025229 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252312 PMAQI
27th Jul 2025231 PMAQI
27th Jul 2025232 PMAQI
27th Jul 2025263 PMAQI
27th Jul 2025244 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025246 PMAQI
27th Jul 2025257 PMAQI
27th Jul 2025268 PMAQI
27th Jul 2025269 PMAQI
27th Jul 20252510 PMAQI
27th Jul 20252611 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025271 AMAQI
28th Jul 2025262 AMAQI
28th Jul 2025263 AMAQI
28th Jul 2025274 AMAQI
25°C17/34°C
28th Jul 2025235 AMAQI
28th Jul 2025236 AMAQI
28th Jul 2025227 AMAQI
28th Jul 2025238 AMAQI
28th Jul 2025259 AMAQI
28th Jul 20252610 AMAQI
28th Jul 20253211 AMAQI
28th Jul 20253112 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025302 PMAQI
28th Jul 2025283 PMAQI
28th Jul 2025284 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025266 PMAQI
28th Jul 2025267 PMAQI
28th Jul 2025278 PMAQI
28th Jul 2025279 PMAQI
28th Jul 20252610 PMAQI
28th Jul 20252811 PMAQI
29th Jul 20253612 AMAQI
29th Jul 2025351 AMAQI
29th Jul 2025382 AMAQI
29th Jul 2025373 AMAQI
29th Jul 2025394 AMAQI
27°C20/34°C
29th Jul 2025495 AMAQI
29th Jul 2025506 AMAQI
29th Jul 2025527 AMAQI
29th Jul 2025498 AMAQI
29th Jul 2025509 AMAQI
29th Jul 20255010 AMAQI
29th Jul 20254811 AMAQI
29th Jul 20254812 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025503 PMAQI
29th Jul 2025504 PMAQI
29th Jul 2025515 PMAQI
29th Jul 2025506 PMAQI
29th Jul 2025507 PMAQI
29th Jul 2025458 PMAQI
29th Jul 2025409 PMAQI
29th Jul 20254010 PMAQI
29th Jul 20254011 PMAQI
30th Jul 20253812 AMAQI
30th Jul 2025401 AMAQI
30th Jul 2025402 AMAQI
30th Jul 2025403 AMAQI
30th Jul 2025404 AMAQI
22°C17/28°C
30th Jul 2025355 AMAQI
30th Jul 2025296 AMAQI
30th Jul 2025347 AMAQI
30th Jul 2025348 AMAQI
30th Jul 2025369 AMAQI
30th Jul 20253610 AMAQI
30th Jul 20253811 AMAQI
30th Jul 20253812 PMAQI
30th Jul 2025401 PMAQI
30th Jul 2025402 PMAQI
30th Jul 2025403 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025405 PMAQI
30th Jul 2025406 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025408 PMAQI
30th Jul 2025429 PMAQI
30th Jul 20254210 PMAQI
30th Jul 20254411 PMAQI
31st Jul 20254412 AMAQI
31st Jul 2025421 AMAQI
31st Jul 2025422 AMAQI
31st Jul 2025433 AMAQI
31st Jul 2025414 AMAQI
18°C14/23°C
31st Jul 2025465 AMAQI
31st Jul 2025516 AMAQI
31st Jul 2025527 AMAQI
31st Jul 2025528 AMAQI
31st Jul 2025529 AMAQI
31st Jul 20255410 AMAQI
31st Jul 20255311 AMAQI
31st Jul 20255312 PMAQI
31st Jul 2025551 PMAQI
31st Jul 2025552 PMAQI
31st Jul 2025563 PMAQI
31st Jul 2025564 PMAQI
31st Jul 2025585 PMAQI
31st Jul 2025596 PMAQI
31st Jul 2025527 PMAQI
31st Jul 2025558 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255410 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255412 AMAQI
1st Aug 2025501 AMAQI
1st Aug 2025502 AMAQI
1st Aug 2025483 AMAQI
1st Aug 2025504 AMAQI
20°C13/30°C
1st Aug 2025515 AMAQI
1st Aug 2025526 AMAQI
1st Aug 2025517 AMAQI
1st Aug 2025528 AMAQI
1st Aug 2025529 AMAQI
1st Aug 20255210 AMAQI
1st Aug 20255211 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025541 PMAQI
1st Aug 2025532 PMAQI
1st Aug 2025543 PMAQI
1st Aug 2025544 PMAQI
1st Aug 2025565 PMAQI
1st Aug 2025556 PMAQI
1st Aug 2025527 PMAQI
1st Aug 2025518 PMAQI
1st Aug 2025449 PMAQI
1st Aug 20253610 PMAQI
1st Aug 20252911 PMAQI
2nd Aug 20252612 AMAQI
2nd Aug 2025311 AMAQI
2nd Aug 2025352 AMAQI
2nd Aug 2025363 AMAQI
2nd Aug 2025374 AMAQI
21°C12/32°C
2nd Aug 2025365 AMAQI
2nd Aug 2025356 AMAQI
2nd Aug 2025367 AMAQI
2nd Aug 2025358 AMAQI
2nd Aug 2025349 AMAQI
2nd Aug 20253510 AMAQI
2nd Aug 20253611 AMAQI
2nd Aug 20253612 PMAQI
2nd Aug 2025361 PMAQI
2nd Aug 2025342 PMAQI
2nd Aug 2025313 PMAQI
2nd Aug 2025314 PMAQI
2nd Aug 2025325 PMAQI
2nd Aug 2025296 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025308 PMAQI
2nd Aug 2025259 PMAQI
2nd Aug 20252410 PMAQI
2nd Aug 20252411 PMAQI
3rd Aug 20252312 AMAQI
3rd Aug 2025241 AMAQI
3rd Aug 2025232 AMAQI
3rd Aug 2025233 AMAQI
3rd Aug 2025244 AMAQI
21°C14/30°C
3rd Aug 2025235 AMAQI
3rd Aug 2025226 AMAQI
3rd Aug 2025227 AMAQI
3rd Aug 2025228 AMAQI
3rd Aug 2025249 AMAQI
3rd Aug 20252310 AMAQI
3rd Aug 20252411 AMAQI
3rd Aug 20252212 PMAQI
3rd Aug 2025221 PMAQI
3rd Aug 2025202 PMAQI
3rd Aug 2025193 PMAQI
3rd Aug 2025204 PMAQI
3rd Aug 2025215 PMAQI
3rd Aug 2025206 PMAQI
3rd Aug 2025237 PMAQI
3rd Aug 2025248 PMAQI
3rd Aug 2025229 PMAQI
3rd Aug 20252410 PMAQI
3rd Aug 20252411 PMAQI
4th Aug 20252612 AMAQI
4th Aug 2025251 AMAQI
4th Aug 2025252 AMAQI
4th Aug 2025263 AMAQI
4th Aug 2025264 AMAQI
22°C14/30°C
4th Aug 2025245 AMAQI
5 AM4th Aug 2025286 AMAQI
4th Aug 2025287 AMAQI
4th Aug 2025298 AMAQI
4th Aug 2025349 AMAQI
4th Aug 20253610 AMAQI
4th Aug 20253711 AMAQI
4th Aug 20253812 PMAQI
12 PM4th Aug 2025401 PMAQI
4th Aug 2025392 PMAQI
4th Aug 2025443 PMAQI
4th Aug 2025444 PMAQI
4th Aug 2025485 PMAQI
4th Aug 2025506 PMAQI
4th Aug 2025297 PMAQI
4th Aug 2025428 PMAQI
8 PM4th Aug 2025559 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20255611 PMAQI
12 AM
4 AM
25°C15/34°C
Day time
Avg. Highest Time
5 AM - 6 PM
36AQI
14 hours / Day
420 hours / Month
Avg. Lowest Time
5 AM - 8 PM
36AQI
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. 36), while the lowest AQI was between 5 AM to 8 PM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 11 PM
36AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
36AQI
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. 36), while the lowest AQI was between 12 AM to 11 PM (Avg. 36).
2025 Days Vs Air Quality
Athens, Boulder, Colorado, United States
2025
99%
214
0.9%
2
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
214 DaysModerate
2 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 217 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Athens, Boulder, Colorado, 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
25AQI
25AQI
2nd January 2025
31AQI
31AQI
3rd January 2025
43AQI
43AQI
4th January 2025
39AQI
39AQI
5th January 2025
28AQI
28AQI
6th January 2025
28AQI
28AQI
7th January 2025
33AQI
33AQI
8th January 2025
33AQI
33AQI
9th January 2025
24AQI
24AQI
10th January 2025
25AQI
25AQI
11th January 2025
22AQI
22AQI
12th January 2025
21AQI
21AQI
13th January 2025
23AQI
23AQI
14th January 2025
23AQI
23AQI
15th January 2025
23AQI
23AQI
16th January 2025
31AQI
31AQI
17th January 2025
32AQI
32AQI
18th January 2025
22AQI
22AQI
19th January 2025
30AQI
30AQI
20th January 2025
26AQI
26AQI
21st January 2025
27AQI
27AQI
22nd January 2025
21AQI
21AQI
23rd January 2025
23AQI
23AQI
24th January 2025
22AQI
22AQI
25th January 2025
22AQI
22AQI
26th January 2025
38AQI
38AQI
27th January 2025
47AQI
47AQI
28th January 2025
37AQI
37AQI
29th January 2025
37AQI
37AQI
30th January 2025
30AQI
30AQI
31st January 2025
26AQI
26AQI
1st February 2025
19AQI
19AQI
2nd February 2025
20AQI
20AQI
3rd February 2025
28AQI
28AQI
4th February 2025
48AQI
48AQI
5th February 2025
40AQI
40AQI
6th February 2025
23AQI
23AQI
7th February 2025
29AQI
29AQI
8th February 2025
29AQI
29AQI
9th February 2025
23AQI
23AQI
10th February 2025
22AQI
22AQI
11th February 2025
35AQI
35AQI
12th February 2025
30AQI
30AQI
13th February 2025
42AQI
42AQI
14th February 2025
44AQI
44AQI
15th February 2025
28AQI
28AQI
16th February 2025
30AQI
30AQI
17th February 2025
32AQI
32AQI
18th February 2025
36AQI
36AQI
19th February 2025
34AQI
34AQI
20th February 2025
48AQI
48AQI
21st February 2025
23AQI
23AQI
22nd February 2025
22AQI
22AQI
23rd February 2025
15AQI
15AQI
24th February 2025
15AQI
15AQI
25th February 2025
14AQI
14AQI
26th February 2025
15AQI
15AQI
27th February 2025
16AQI
16AQI
28th February 2025
19AQI
19AQI
1st March 2025
19AQI
19AQI
2nd March 2025
19AQI
19AQI
3rd March 2025
20AQI
20AQI
4th March 2025
19AQI
19AQI
5th March 2025
17AQI
17AQI
6th March 2025
20AQI
20AQI
7th March 2025
17AQI
17AQI
8th March 2025
17AQI
17AQI
9th March 2025
14AQI
14AQI
10th March 2025
19AQI
19AQI
11th March 2025
17AQI
17AQI
12th March 2025
19AQI
19AQI
13th March 2025
19AQI
19AQI
14th March 2025
22AQI
22AQI
15th March 2025
17AQI
17AQI
16th March 2025
22AQI
22AQI
17th March 2025
23AQI
23AQI
18th March 2025
20AQI
20AQI
19th March 2025
17AQI
17AQI
20th March 2025
22AQI
22AQI
21st March 2025
18AQI
18AQI
22nd March 2025
16AQI
16AQI
23rd March 2025
16AQI
16AQI
24th March 2025
16AQI
16AQI
25th March 2025
18AQI
18AQI
26th March 2025
20AQI
20AQI
27th March 2025
18AQI
18AQI
28th March 2025
21AQI
21AQI
29th March 2025
18AQI
18AQI
30th March 2025
21AQI
21AQI
31st March 2025
38AQI
38AQI
1st April 2025
21AQI
21AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
17AQI
17AQI
4th April 2025
20AQI
20AQI
5th April 2025
22AQI
22AQI
6th April 2025
18AQI
18AQI
7th April 2025
25AQI
25AQI
8th April 2025
20AQI
20AQI
9th April 2025
39AQI
39AQI
10th April 2025
40AQI
40AQI
11th April 2025
35AQI
35AQI
12th April 2025
26AQI
26AQI
13th April 2025
23AQI
23AQI
14th April 2025
18AQI
18AQI
15th April 2025
28AQI
28AQI
16th April 2025
22AQI
22AQI
17th April 2025
20AQI
20AQI
18th April 2025
13AQI
13AQI
19th April 2025
22AQI
22AQI
20th April 2025
17AQI
17AQI
21st April 2025
15AQI
15AQI
22nd April 2025
18AQI
18AQI
23rd April 2025
25AQI
25AQI
24th April 2025
50AQI
50AQI
25th April 2025
22AQI
22AQI
26th April 2025
21AQI
21AQI
27th April 2025
24AQI
24AQI
28th April 2025
16AQI
16AQI
29th April 2025
15AQI
15AQI
30th April 2025
15AQI
15AQI
1st May 2025
15AQI
15AQI
2nd May 2025
18AQI
18AQI
3rd May 2025
19AQI
19AQI
4th May 2025
19AQI
19AQI
5th May 2025
18AQI
18AQI
6th May 2025
18AQI
18AQI
7th May 2025
18AQI
18AQI
8th May 2025
21AQI
21AQI
9th May 2025
19AQI
19AQI
10th May 2025
21AQI
21AQI
11th May 2025
22AQI
22AQI
12th May 2025
23AQI
23AQI
13th May 2025
26AQI
26AQI
14th May 2025
38AQI
38AQI
15th May 2025
14AQI
14AQI
16th May 2025
16AQI
16AQI
17th May 2025
16AQI
16AQI
18th May 2025
26AQI
26AQI
19th May 2025
14AQI
14AQI
20th May 2025
17AQI
17AQI
21st May 2025
16AQI
16AQI
22nd May 2025
21AQI
21AQI
23rd May 2025
29AQI
29AQI
24th May 2025
40AQI
40AQI
25th May 2025
16AQI
16AQI
26th May 2025
17AQI
17AQI
27th May 2025
26AQI
26AQI
28th May 2025
20AQI
20AQI
29th May 2025
17AQI
17AQI
30th May 2025
23AQI
23AQI
31st May 2025
25AQI
25AQI
1st June 2025
31AQI
31AQI
2nd June 2025
22AQI
22AQI
3rd June 2025
19AQI
19AQI
4th June 2025
32AQI
32AQI
5th June 2025
31AQI
31AQI
6th June 2025
23AQI
23AQI
7th June 2025
22AQI
22AQI
8th June 2025
32AQI
32AQI
9th June 2025
42AQI
42AQI
10th June 2025
34AQI
34AQI
11th June 2025
26AQI
26AQI
12th June 2025
25AQI
25AQI
13th June 2025
26AQI
26AQI
14th June 2025
35AQI
35AQI
15th June 2025
29AQI
29AQI
16th June 2025
27AQI
27AQI
17th June 2025
27AQI
27AQI
18th June 2025
25AQI
25AQI
19th June 2025
29AQI
29AQI
20th June 2025
33AQI
33AQI
21st June 2025
30AQI
30AQI
22nd June 2025
30AQI
30AQI
23rd June 2025
35AQI
35AQI
24th June 2025
44AQI
44AQI
25th June 2025
35AQI
35AQI
26th June 2025
28AQI
28AQI
27th June 2025
34AQI
34AQI
28th June 2025
36AQI
36AQI
29th June 2025
33AQI
33AQI
30th June 2025
30AQI
30AQI
1st July 2025
34AQI
34AQI
2nd July 2025
30AQI
30AQI
3rd July 2025
28AQI
28AQI
4th July 2025
25AQI
25AQI
5th July 2025
34AQI
34AQI
6th July 2025
30AQI
30AQI
7th July 2025
28AQI
28AQI
8th July 2025
31AQI
31AQI
9th July 2025
29AQI
29AQI
10th July 2025
31AQI
31AQI
11th July 2025
36AQI
36AQI
12th July 2025
57AQI
57AQI
13th July 2025
47AQI
47AQI
14th July 2025
32AQI
32AQI
15th July 2025
31AQI
31AQI
16th July 2025
40AQI
40AQI
17th July 2025
43AQI
43AQI
18th July 2025
50AQI
50AQI
19th July 2025
41AQI
41AQI
20th July 2025
32AQI
32AQI
21st July 2025
29AQI
29AQI
22nd July 2025
27AQI
27AQI
23rd July 2025
25AQI
25AQI
24th July 2025
31AQI
31AQI
25th July 2025
40AQI
40AQI
26th July 2025
46AQI
46AQI
27th July 2025
28AQI
28AQI
28th July 2025
27AQI
27AQI
29th July 2025
45AQI
45AQI
30th July 2025
39AQI
39AQI
31st July 2025
51AQI
51AQI
1st August 2025
50AQI
50AQI
2nd August 2025
32AQI
32AQI
3rd August 2025
23AQI
23AQI
4th August 2025
28AQI
28AQI
29AQI
28AQI
19AQI
23AQI
21AQI
30AQI
35AQI
33AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202527AQI
31
28
31
30
31
30
29
2
4
214
2
Highest AQI recorded in
July35AQI
Lowest AQI recorded in
March19AQI
202424AQI
30
1
29
31
30
31
30
26
5
29
2
29
1
28
3
30
31
354
12
Highest AQI recorded in
July34AQI
Lowest AQI recorded in
May17AQI
202326AQI
26
2
24
2
31
29
1
26
3
1
30
31
17
5
30
30
1
28
31
333
14
1
Highest AQI recorded in
May35AQI
Lowest AQI recorded in
December14AQI
202227AQI
29
1
21
1
30
1
14
2
1
31
27
3
21
2
26
3
31
30
30
292
11
1
Highest AQI recorded in
April35AQI
Lowest AQI recorded in
July23AQI
202133AQI
28
2
22
6
27
4
24
3
28
20
6
20
10
14
16
1
24
6
31
29
1
30
1
297
55
1
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
May22AQI
202036AQI
3
3
5
1
13
5
25
2
29
1
20
8
19
10
20
10
1
29
30
1
193
41
1
Highest AQI recorded in
March56AQI
Lowest AQI recorded in
November24AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
36AQILeast Polluted Year Recorded
2024(Avg.)
24AQIAthens's annual 2025 AQI (27) shows an average percentage change of -6.9% (improved AQI) compared to previous years: 2020 (36), 2021 (33), 2022 (27), 2023 (26), 2024 (24).
