Bar Harbor, Maine, 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
Bar Harbor, Maine, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
89AQILowest AQI recorded on
21st Aug 2024
7AQISame Day Analysis (10th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 37 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Bar Harbor, Maine, United States
AQI
Day
Night
.
5 AM10th Aug 2025
8 PM
4 AM11th Aug 2025
Day time
Avg. Highest Time
6PM10th Aug
45AQI
Avg. Lowest Time
5AM10th Aug
34AQI
Night time
Avg. Highest Time
3AM11th Aug
49AQI
Avg. Lowest Time
12AM11th Aug
40AQI
In the last 24 hours,
Bar Harbor's AQI reached its highest point of 49 at 3 AM during the Night, while the lowest point, 34, was recorded at 5 AM during the Day between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Bar Harbor, Maine, United States
JulAug
12th - 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 - 09th09th - 10th10th - 11th11th
Day
Night
12th Jul 2025405 AMAQI
12th Jul 2025276 AMAQI
12th Jul 2025287 AMAQI
12th Jul 2025308 AMAQI
12th Jul 2025309 AMAQI
12th Jul 20252910 AMAQI
12th Jul 20252911 AMAQI
12th Jul 20252812 PMAQI
12th Jul 2025281 PMAQI
12th Jul 2025302 PMAQI
12th Jul 2025313 PMAQI
12th Jul 2025334 PMAQI
12th Jul 2025315 PMAQI
12th Jul 2025326 PMAQI
12th Jul 2025317 PMAQI
12th Jul 2025308 PMAQI
12th Jul 2025329 PMAQI
12th Jul 20252910 PMAQI
12th Jul 20253111 PMAQI
13th Jul 20253112 AMAQI
13th Jul 2025251 AMAQI
13th Jul 2025242 AMAQI
13th Jul 2025223 AMAQI
13th Jul 2025204 AMAQI
14°C14/15°C
13th Jul 2025205 AMAQI
13th Jul 2025206 AMAQI
13th Jul 2025217 AMAQI
13th Jul 2025218 AMAQI
13th Jul 2025229 AMAQI
13th Jul 20252310 AMAQI
13th Jul 20252311 AMAQI
13th Jul 20252212 PMAQI
13th Jul 2025221 PMAQI
13th Jul 2025232 PMAQI
13th Jul 2025253 PMAQI
13th Jul 2025264 PMAQI
13th Jul 2025275 PMAQI
13th Jul 2025266 PMAQI
13th Jul 2025277 PMAQI
13th Jul 2025288 PMAQI
13th Jul 2025249 PMAQI
13th Jul 20252610 PMAQI
13th Jul 20252711 PMAQI
14th Jul 20252512 AMAQI
14th Jul 2025231 AMAQI
14th Jul 2025202 AMAQI
14th Jul 2025193 AMAQI
14th Jul 2025194 AMAQI
14°C13/15°C
14th Jul 2025185 AMAQI
14th Jul 2025186 AMAQI
14th Jul 2025197 AMAQI
14th Jul 2025208 AMAQI
14th Jul 2025199 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20251911 AMAQI
14th Jul 20252012 PMAQI
14th Jul 2025201 PMAQI
14th Jul 2025232 PMAQI
14th Jul 2025233 PMAQI
14th Jul 2025244 PMAQI
14th Jul 2025245 PMAQI
14th Jul 2025246 PMAQI
14th Jul 2025227 PMAQI
14th Jul 2025238 PMAQI
14th Jul 2025269 PMAQI
14th Jul 20252710 PMAQI
14th Jul 20252811 PMAQI
15th Jul 20252612 AMAQI
15th Jul 2025301 AMAQI
15th Jul 2025302 AMAQI
15th Jul 2025313 AMAQI
15th Jul 2025314 AMAQI
14°C13/17°C
15th Jul 2025305 AMAQI
15th Jul 2025306 AMAQI
15th Jul 2025317 AMAQI
15th Jul 2025318 AMAQI
15th Jul 2025339 AMAQI
15th Jul 20253810 AMAQI
15th Jul 20254911 AMAQI
15th Jul 20255712 PMAQI
15th Jul 2025641 PMAQI
15th Jul 2025622 PMAQI
15th Jul 2025583 PMAQI
15th Jul 2025574 PMAQI
15th Jul 2025555 PMAQI
15th Jul 2025546 PMAQI
15th Jul 2025437 PMAQI
15th Jul 2025438 PMAQI
15th Jul 2025549 PMAQI
15th Jul 20255310 PMAQI
15th Jul 20255011 PMAQI
16th Jul 20254612 AMAQI
16th Jul 2025421 AMAQI
16th Jul 2025432 AMAQI
16th Jul 2025393 AMAQI
16th Jul 2025444 AMAQI
19°C13/24°C
16th Jul 2025445 AMAQI
16th Jul 2025436 AMAQI
16th Jul 2025507 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025579 AMAQI
16th Jul 20255810 AMAQI
16th Jul 20255811 AMAQI
16th Jul 20255912 PMAQI
16th Jul 2025591 PMAQI
16th Jul 2025572 PMAQI
16th Jul 2025563 PMAQI
16th Jul 2025544 PMAQI
16th Jul 2025545 PMAQI
16th Jul 2025526 PMAQI
16th Jul 2025517 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025479 PMAQI
16th Jul 20254710 PMAQI
16th Jul 20254511 PMAQI
17th Jul 20254212 AMAQI
17th Jul 2025341 AMAQI
17th Jul 2025322 AMAQI
17th Jul 2025303 AMAQI
17th Jul 2025294 AMAQI
19°C16/24°C
17th Jul 2025305 AMAQI
17th Jul 2025316 AMAQI
17th Jul 2025347 AMAQI
17th Jul 2025348 AMAQI
17th Jul 2025339 AMAQI
17th Jul 20253210 AMAQI
17th Jul 20253211 AMAQI
17th Jul 20252912 PMAQI
17th Jul 2025291 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025333 PMAQI
17th Jul 2025314 PMAQI
17th Jul 2025315 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20252810 PMAQI
17th Jul 20252911 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025231 AMAQI
18th Jul 2025282 AMAQI
18th Jul 2025283 AMAQI
18th Jul 2025324 AMAQI
16°C14/17°C
18th Jul 2025245 AMAQI
18th Jul 2025206 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025148 AMAQI
18th Jul 2025149 AMAQI
18th Jul 20251410 AMAQI
18th Jul 20251511 AMAQI
18th Jul 20251612 PMAQI
18th Jul 2025161 PMAQI
18th Jul 2025162 PMAQI
18th Jul 2025183 PMAQI
18th Jul 2025184 PMAQI
18th Jul 2025185 PMAQI
18th Jul 2025196 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025198 PMAQI
18th Jul 2025209 PMAQI
18th Jul 20252010 PMAQI
18th Jul 20252111 PMAQI
19th Jul 20252212 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025222 AMAQI
19th Jul 2025223 AMAQI
19th Jul 2025224 AMAQI
21°C16/25°C
19th Jul 2025235 AMAQI
19th Jul 2025226 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025238 AMAQI
19th Jul 2025239 AMAQI
19th Jul 20252310 AMAQI
19th Jul 20252411 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025282 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025255 PMAQI
19th Jul 2025246 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025248 PMAQI
19th Jul 2025249 PMAQI
19th Jul 20252410 PMAQI
19th Jul 20252411 PMAQI
20th Jul 20252312 AMAQI
20th Jul 2025211 AMAQI
20th Jul 2025212 AMAQI
20th Jul 2025203 AMAQI
20th Jul 2025204 AMAQI
19°C14/24°C
20th Jul 2025215 AMAQI
20th Jul 2025236 AMAQI
20th Jul 2025227 AMAQI
20th Jul 2025228 AMAQI
20th Jul 2025229 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252511 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025252 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025237 PMAQI
20th Jul 2025238 PMAQI
20th Jul 2025229 PMAQI
20th Jul 20252410 PMAQI
20th Jul 20252411 PMAQI
21st Jul 20252312 AMAQI
21st Jul 2025231 AMAQI
21st Jul 2025222 AMAQI
21st Jul 2025243 AMAQI
21st Jul 2025284 AMAQI
15°C14/16°C
21st Jul 2025295 AMAQI
21st Jul 2025346 AMAQI
21st Jul 2025367 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025429 AMAQI
21st Jul 20253810 AMAQI
21st Jul 20253411 AMAQI
21st Jul 20253312 PMAQI
21st Jul 2025321 PMAQI
21st Jul 2025302 PMAQI
21st Jul 2025283 PMAQI
21st Jul 2025274 PMAQI
21st Jul 2025275 PMAQI
21st Jul 2025266 PMAQI
21st Jul 2025247 PMAQI
21st Jul 2025228 PMAQI
21st Jul 2025209 PMAQI
21st Jul 20252010 PMAQI
21st Jul 20252111 PMAQI
22nd Jul 20251912 AMAQI
22nd Jul 2025161 AMAQI
22nd Jul 2025142 AMAQI
22nd Jul 2025153 AMAQI
22nd Jul 2025144 AMAQI
18°C16/22°C
22nd Jul 2025135 AMAQI
22nd Jul 2025156 AMAQI
22nd Jul 2025147 AMAQI
22nd Jul 2025148 AMAQI
22nd Jul 2025149 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251511 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025172 PMAQI
22nd Jul 2025173 PMAQI
22nd Jul 2025174 PMAQI
22nd Jul 2025185 PMAQI
22nd Jul 2025186 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025168 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025171 AMAQI
23rd Jul 2025172 AMAQI
23rd Jul 2025183 AMAQI
23rd Jul 2025194 AMAQI
18°C13/24°C
23rd Jul 2025215 AMAQI
23rd Jul 2025246 AMAQI
23rd Jul 2025267 AMAQI
23rd Jul 2025268 AMAQI
23rd Jul 2025279 AMAQI
23rd Jul 20252810 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025271 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025253 PMAQI
23rd Jul 2025254 PMAQI
23rd Jul 2025245 PMAQI
23rd Jul 2025246 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252511 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025221 AMAQI
24th Jul 2025232 AMAQI
24th Jul 2025223 AMAQI
24th Jul 2025234 AMAQI
15°C10/20°C
24th Jul 2025235 AMAQI
24th Jul 2025236 AMAQI
24th Jul 2025247 AMAQI
24th Jul 2025258 AMAQI
24th Jul 2025269 AMAQI
24th Jul 20252910 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253012 PMAQI
24th Jul 2025321 PMAQI
24th Jul 2025332 PMAQI
24th Jul 2025343 PMAQI
24th Jul 2025344 PMAQI
24th Jul 2025345 PMAQI
24th Jul 2025356 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025359 PMAQI
24th Jul 20253610 PMAQI
24th Jul 20253611 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025421 AMAQI
25th Jul 2025432 AMAQI
25th Jul 2025423 AMAQI
25th Jul 2025444 AMAQI
17°C14/20°C
25th Jul 2025455 AMAQI
25th Jul 2025456 AMAQI
25th Jul 2025477 AMAQI
25th Jul 2025468 AMAQI
25th Jul 2025489 AMAQI
25th Jul 20254910 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20254812 PMAQI
25th Jul 2025461 PMAQI
25th Jul 2025502 PMAQI
25th Jul 2025483 PMAQI
25th Jul 2025484 PMAQI
25th Jul 2025485 PMAQI
25th Jul 2025476 PMAQI
25th Jul 2025467 PMAQI
25th Jul 2025448 PMAQI
25th Jul 2025419 PMAQI
25th Jul 20254510 PMAQI
25th Jul 20255111 PMAQI
26th Jul 20256812 AMAQI
26th Jul 20251091 AMAQI
26th Jul 20251192 AMAQI
26th Jul 20251153 AMAQI
26th Jul 20251114 AMAQI
20°C16/25°C
26th Jul 20251005 AMAQI
26th Jul 2025936 AMAQI
26th Jul 20251067 AMAQI
26th Jul 20251018 AMAQI
26th Jul 20251029 AMAQI
26th Jul 20259010 AMAQI
26th Jul 20258411 AMAQI
26th Jul 20258112 PMAQI
26th Jul 2025781 PMAQI
26th Jul 2025822 PMAQI
26th Jul 2025893 PMAQI
26th Jul 2025904 PMAQI
26th Jul 2025925 PMAQI
26th Jul 2025866 PMAQI
26th Jul 2025897 PMAQI
26th Jul 2025878 PMAQI
26th Jul 2025819 PMAQI
26th Jul 20258210 PMAQI
26th Jul 20258211 PMAQI
27th Jul 20257612 AMAQI
27th Jul 2025691 AMAQI
27th Jul 2025662 AMAQI
27th Jul 2025673 AMAQI
27th Jul 2025684 AMAQI
21°C16/27°C
27th Jul 2025715 AMAQI
27th Jul 2025806 AMAQI
27th Jul 2025817 AMAQI
27th Jul 2025818 AMAQI
27th Jul 2025829 AMAQI
27th Jul 20258410 AMAQI
27th Jul 20258211 AMAQI
27th Jul 20258112 PMAQI
27th Jul 2025821 PMAQI
27th Jul 2025762 PMAQI
27th Jul 2025753 PMAQI
27th Jul 2025724 PMAQI
27th Jul 2025715 PMAQI
27th Jul 2025706 PMAQI
27th Jul 2025737 PMAQI
27th Jul 2025748 PMAQI
27th Jul 2025709 PMAQI
27th Jul 20256910 PMAQI
27th Jul 20256911 PMAQI
28th Jul 20256712 AMAQI
28th Jul 2025601 AMAQI
28th Jul 2025562 AMAQI
28th Jul 2025553 AMAQI
28th Jul 2025554 AMAQI
17°C15/20°C
28th Jul 2025515 AMAQI
28th Jul 2025516 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025508 AMAQI
28th Jul 2025509 AMAQI
28th Jul 20255110 AMAQI
28th Jul 20255111 AMAQI
28th Jul 20255412 PMAQI
28th Jul 2025541 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025564 PMAQI
28th Jul 2025565 PMAQI
28th Jul 2025566 PMAQI
28th Jul 2025567 PMAQI
28th Jul 2025568 PMAQI
28th Jul 2025559 PMAQI
28th Jul 20255510 PMAQI
28th Jul 20255511 PMAQI
29th Jul 20255412 AMAQI
29th Jul 2025541 AMAQI
29th Jul 2025552 AMAQI
29th Jul 2025553 AMAQI
29th Jul 2025544 AMAQI
18°C14/24°C
29th Jul 2025555 AMAQI
29th Jul 2025556 AMAQI
29th Jul 2025557 AMAQI
29th Jul 2025558 AMAQI
29th Jul 2025559 AMAQI
29th Jul 20255510 AMAQI
29th Jul 20255411 AMAQI
29th Jul 20255412 PMAQI
29th Jul 2025541 PMAQI
29th Jul 2025532 PMAQI
29th Jul 2025543 PMAQI
29th Jul 2025544 PMAQI
29th Jul 2025545 PMAQI
29th Jul 2025546 PMAQI
29th Jul 2025557 PMAQI
29th Jul 2025568 PMAQI
29th Jul 2025549 PMAQI
29th Jul 20255310 PMAQI
29th Jul 20255211 PMAQI
30th Jul 20255012 AMAQI
30th Jul 2025431 AMAQI
30th Jul 2025432 AMAQI
30th Jul 2025433 AMAQI
30th Jul 2025424 AMAQI
19°C14/25°C
30th Jul 2025435 AMAQI
30th Jul 2025446 AMAQI
30th Jul 2025457 AMAQI
30th Jul 2025478 AMAQI
30th Jul 2025539 AMAQI
30th Jul 20255710 AMAQI
30th Jul 20255711 AMAQI
30th Jul 20255512 PMAQI
30th Jul 2025561 PMAQI
30th Jul 2025562 PMAQI
30th Jul 2025553 PMAQI
30th Jul 2025554 PMAQI
30th Jul 2025555 PMAQI
30th Jul 2025556 PMAQI
30th Jul 2025557 PMAQI
30th Jul 2025558 PMAQI
30th Jul 2025549 PMAQI
30th Jul 20255310 PMAQI
30th Jul 20255311 PMAQI
31st Jul 20255312 AMAQI
31st Jul 2025541 AMAQI
31st Jul 2025542 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025584 AMAQI
20°C16/23°C
31st Jul 2025605 AMAQI
31st Jul 2025646 AMAQI
31st Jul 2025687 AMAQI
31st Jul 2025708 AMAQI
31st Jul 2025759 AMAQI
31st Jul 20257210 AMAQI
31st Jul 20257211 AMAQI
31st Jul 20257112 PMAQI
31st Jul 2025681 PMAQI
31st Jul 2025662 PMAQI
31st Jul 2025643 PMAQI
31st Jul 2025644 PMAQI
31st Jul 2025635 PMAQI
31st Jul 2025606 PMAQI
31st Jul 2025657 PMAQI
31st Jul 2025658 PMAQI
31st Jul 2025619 PMAQI
31st Jul 20256110 PMAQI
31st Jul 20256511 PMAQI
1st Aug 20256712 AMAQI
1st Aug 2025641 AMAQI
1st Aug 2025622 AMAQI
1st Aug 2025583 AMAQI
1st Aug 2025564 AMAQI
19°C15/22°C
1st Aug 2025585 AMAQI
1st Aug 2025616 AMAQI
1st Aug 2025547 AMAQI
1st Aug 2025478 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20253110 AMAQI
1st Aug 20252711 AMAQI
1st Aug 20252812 PMAQI
1st Aug 2025281 PMAQI
1st Aug 2025272 PMAQI
1st Aug 2025293 PMAQI
1st Aug 2025264 PMAQI
1st Aug 2025265 PMAQI
1st Aug 2025266 PMAQI
1st Aug 2025477 PMAQI
1st Aug 2025348 PMAQI
1st Aug 2025279 PMAQI
1st Aug 20252510 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252712 AMAQI
2nd Aug 2025281 AMAQI
2nd Aug 2025242 AMAQI
2nd Aug 2025253 AMAQI
2nd Aug 2025254 AMAQI
19°C14/24°C
2nd Aug 2025245 AMAQI
2nd Aug 2025226 AMAQI
2nd Aug 2025227 AMAQI
2nd Aug 2025218 AMAQI
2nd Aug 2025189 AMAQI
2nd Aug 20252310 AMAQI
2nd Aug 20252311 AMAQI
2nd Aug 20252512 PMAQI
2nd Aug 2025381 PMAQI
2nd Aug 2025562 PMAQI
2nd Aug 2025603 PMAQI
2nd Aug 2025624 PMAQI
2nd Aug 2025565 PMAQI
2nd Aug 2025526 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025408 PMAQI
2nd Aug 2025589 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20255811 PMAQI
3rd Aug 20256012 AMAQI
3rd Aug 2025561 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025603 AMAQI
3rd Aug 2025604 AMAQI
18°C12/24°C
3rd Aug 2025555 AMAQI
3rd Aug 2025546 AMAQI
3rd Aug 2025567 AMAQI
3rd Aug 2025628 AMAQI
3rd Aug 2025669 AMAQI
3rd Aug 20257210 AMAQI
3rd Aug 20257911 AMAQI
3rd Aug 20258012 PMAQI
3rd Aug 2025861 PMAQI
3rd Aug 2025862 PMAQI
3rd Aug 2025873 PMAQI
3rd Aug 2025904 PMAQI
3rd Aug 2025875 PMAQI
3rd Aug 2025906 PMAQI
3rd Aug 2025697 PMAQI
3rd Aug 2025778 PMAQI
3rd Aug 2025849 PMAQI
3rd Aug 20257610 PMAQI
3rd Aug 20257611 PMAQI
4th Aug 20257312 AMAQI
4th Aug 2025751 AMAQI
4th Aug 2025702 AMAQI
4th Aug 2025693 AMAQI
4th Aug 2025724 AMAQI
17°C14/23°C
4th Aug 2025665 AMAQI
4th Aug 2025686 AMAQI
4th Aug 2025737 AMAQI
4th Aug 2025768 AMAQI
4th Aug 2025839 AMAQI
4th Aug 20258810 AMAQI
4th Aug 202510311 AMAQI
4th Aug 202510612 PMAQI
4th Aug 20251101 PMAQI
4th Aug 20251162 PMAQI
4th Aug 20251123 PMAQI
4th Aug 20251134 PMAQI
4th Aug 20251045 PMAQI
4th Aug 20251036 PMAQI
4th Aug 2025857 PMAQI
4th Aug 2025958 PMAQI
4th Aug 20251049 PMAQI
4th Aug 202510410 PMAQI
4th Aug 202510711 PMAQI
5th Aug 202512512 AMAQI
5th Aug 20251231 AMAQI
5th Aug 20251122 AMAQI
5th Aug 20251003 AMAQI
5th Aug 2025884 AMAQI
18°C12/25°C
5th Aug 2025785 AMAQI
5th Aug 2025686 AMAQI
5th Aug 2025667 AMAQI
5th Aug 2025648 AMAQI
5th Aug 2025579 AMAQI
5th Aug 20255210 AMAQI
5th Aug 20254811 AMAQI
5th Aug 20254712 PMAQI
5th Aug 2025441 PMAQI
5th Aug 2025502 PMAQI
5th Aug 2025503 PMAQI
5th Aug 2025514 PMAQI
5th Aug 2025525 PMAQI
5th Aug 2025546 PMAQI
5th Aug 2025637 PMAQI
5th Aug 2025538 PMAQI
5th Aug 2025459 PMAQI
5th Aug 20254610 PMAQI
5th Aug 20254311 PMAQI
6th Aug 20254412 AMAQI
6th Aug 2025441 AMAQI
6th Aug 2025472 AMAQI
6th Aug 2025443 AMAQI
6th Aug 2025384 AMAQI
19°C16/23°C
6th Aug 2025395 AMAQI
6th Aug 2025396 AMAQI
6th Aug 2025407 AMAQI
6th Aug 2025408 AMAQI
6th Aug 2025429 AMAQI
6th Aug 20254910 AMAQI
6th Aug 20254811 AMAQI
6th Aug 20254812 PMAQI
6th Aug 2025431 PMAQI
6th Aug 2025462 PMAQI
6th Aug 2025463 PMAQI
6th Aug 2025454 PMAQI
6th Aug 2025455 PMAQI
6th Aug 2025466 PMAQI
6th Aug 2025427 PMAQI
6th Aug 2025488 PMAQI
6th Aug 2025449 PMAQI
6th Aug 20254510 PMAQI
6th Aug 20254711 PMAQI
7th Aug 20254112 AMAQI
7th Aug 2025381 AMAQI
7th Aug 2025412 AMAQI
7th Aug 2025413 AMAQI
7th Aug 2025404 AMAQI
18°C13/22°C
7th Aug 2025415 AMAQI
7th Aug 2025406 AMAQI
7th Aug 2025417 AMAQI
7th Aug 2025458 AMAQI
7th Aug 2025489 AMAQI
7th Aug 20255010 AMAQI
7th Aug 20254911 AMAQI
7th Aug 20255212 PMAQI
7th Aug 2025531 PMAQI
7th Aug 2025532 PMAQI
7th Aug 2025503 PMAQI
7th Aug 2025514 PMAQI
7th Aug 2025515 PMAQI
7th Aug 2025516 PMAQI
7th Aug 2025487 PMAQI
7th Aug 2025468 PMAQI
7th Aug 2025469 PMAQI
7th Aug 20254510 PMAQI
7th Aug 20254511 PMAQI
8th Aug 20254312 AMAQI
8th Aug 2025391 AMAQI
8th Aug 2025392 AMAQI
8th Aug 2025393 AMAQI
8th Aug 2025404 AMAQI
18°C14/23°C
8th Aug 2025395 AMAQI
8th Aug 2025406 AMAQI
8th Aug 2025417 AMAQI
8th Aug 2025408 AMAQI
8th Aug 2025429 AMAQI
8th Aug 20254210 AMAQI
8th Aug 20254311 AMAQI
8th Aug 20254412 PMAQI
8th Aug 2025461 PMAQI
8th Aug 2025472 PMAQI
8th Aug 2025483 PMAQI
8th Aug 2025474 PMAQI
8th Aug 2025465 PMAQI
8th Aug 2025466 PMAQI
8th Aug 2025447 PMAQI
8th Aug 2025458 PMAQI
8th Aug 2025439 PMAQI
8th Aug 20254310 PMAQI
8th Aug 20254211 PMAQI
9th Aug 20254112 AMAQI
9th Aug 2025371 AMAQI
9th Aug 2025332 AMAQI
9th Aug 2025353 AMAQI
9th Aug 2025354 AMAQI
16°C10/20°C
9th Aug 2025365 AMAQI
9th Aug 2025376 AMAQI
9th Aug 2025397 AMAQI
9th Aug 2025398 AMAQI
9th Aug 2025399 AMAQI
9th Aug 20253810 AMAQI
9th Aug 20253811 AMAQI
9th Aug 20253812 PMAQI
9th Aug 2025391 PMAQI
9th Aug 2025432 PMAQI
9th Aug 2025423 PMAQI
9th Aug 2025424 PMAQI
9th Aug 2025435 PMAQI
9th Aug 2025436 PMAQI
9th Aug 2025427 PMAQI
9th Aug 2025408 PMAQI
9th Aug 2025399 PMAQI
9th Aug 20253810 PMAQI
9th Aug 20254011 PMAQI
10th Aug 20253812 AMAQI
10th Aug 2025341 AMAQI
10th Aug 2025342 AMAQI
10th Aug 2025353 AMAQI
10th Aug 2025344 AMAQI
16°C13/19°C
10th Aug 2025345 AMAQI
10th Aug 2025366 AMAQI
10th Aug 2025357 AMAQI
10th Aug 2025368 AMAQI
10th Aug 2025379 AMAQI
10th Aug 20253810 AMAQI
10th Aug 20253911 AMAQI
10th Aug 20254012 PMAQI
10th Aug 2025401 PMAQI
10th Aug 2025412 PMAQI
10th Aug 2025433 PMAQI
10th Aug 2025444 PMAQI
10th Aug 2025445 PMAQI
10th Aug 2025456 PMAQI
10th Aug 2025407 PMAQI
10th Aug 2025408 PMAQI
10th Aug 2025449 PMAQI
10th Aug 20254410 PMAQI
10th Aug 20254211 PMAQI
11th Aug 20254012 AMAQI
11th Aug 2025441 AMAQI
11th Aug 2025482 AMAQI
11th Aug 2025493 AMAQI
11th Aug 2025454 AMAQI
17°C13/20°C
11th Aug 2025495 AMAQI
5 AM12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
44AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
44AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 44), while the lowest AQI was between 5 AM to 8 PM (Avg. 44).
Night time
Avg. Highest Time
12 AM - 11 PM
43AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
43AQI
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. 43), while the lowest AQI was between 12 AM to 11 PM (Avg. 43).
2025 Days Vs Air Quality
Bar Harbor, Maine, United States
2025
92%
205
8%
17
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
205 DaysModerate
17 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 223 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
Bar Harbor, Maine, 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
21AQI
21AQI
2nd January 2025
18AQI
18AQI
3rd January 2025
17AQI
17AQI
4th January 2025
17AQI
17AQI
5th January 2025
18AQI
18AQI
6th January 2025
18AQI
18AQI
7th January 2025
17AQI
17AQI
8th January 2025
17AQI
17AQI
9th January 2025
18AQI
18AQI
10th January 2025
20AQI
20AQI
11th January 2025
20AQI
20AQI
12th January 2025
21AQI
21AQI
13th January 2025
27AQI
27AQI
14th January 2025
26AQI
26AQI
15th January 2025
21AQI
21AQI
16th January 2025
24AQI
24AQI
17th January 2025
33AQI
33AQI
18th January 2025
26AQI
26AQI
19th January 2025
18AQI
18AQI
20th January 2025
19AQI
19AQI
21st January 2025
23AQI
23AQI
22nd January 2025
34AQI
34AQI
23rd January 2025
34AQI
34AQI
24th January 2025
36AQI
36AQI
25th January 2025
24AQI
24AQI
26th January 2025
25AQI
25AQI
27th January 2025
21AQI
21AQI
28th January 2025
22AQI
22AQI
29th January 2025
20AQI
20AQI
30th January 2025
20AQI
20AQI
31st January 2025
28AQI
28AQI
1st February 2025
19AQI
19AQI
2nd February 2025
20AQI
20AQI
3rd February 2025
21AQI
21AQI
4th February 2025
20AQI
20AQI
5th February 2025
20AQI
20AQI
6th February 2025
24AQI
24AQI
7th February 2025
20AQI
20AQI
8th February 2025
20AQI
20AQI
9th February 2025
21AQI
21AQI
10th February 2025
22AQI
22AQI
11th February 2025
26AQI
26AQI
12th February 2025
26AQI
26AQI
13th February 2025
22AQI
22AQI
14th February 2025
21AQI
21AQI
15th February 2025
23AQI
23AQI
16th February 2025
20AQI
20AQI
17th February 2025
19AQI
19AQI
18th February 2025
19AQI
19AQI
19th February 2025
18AQI
18AQI
20th February 2025
19AQI
19AQI
21st February 2025
18AQI
18AQI
22nd February 2025
21AQI
21AQI
23rd February 2025
29AQI
29AQI
24th February 2025
37AQI
37AQI
25th February 2025
42AQI
42AQI
26th February 2025
25AQI
25AQI
27th February 2025
23AQI
23AQI
28th February 2025
20AQI
20AQI
1st March 2025
26AQI
26AQI
2nd March 2025
21AQI
21AQI
3rd March 2025
22AQI
22AQI
4th March 2025
31AQI
31AQI
5th March 2025
33AQI
33AQI
6th March 2025
20AQI
20AQI
7th March 2025
19AQI
19AQI
8th March 2025
21AQI
21AQI
9th March 2025
21AQI
21AQI
10th March 2025
21AQI
21AQI
11th March 2025
26AQI
26AQI
12th March 2025
21AQI
21AQI
13th March 2025
19AQI
19AQI
14th March 2025
22AQI
22AQI
15th March 2025
19AQI
19AQI
16th March 2025
17AQI
17AQI
17th March 2025
14AQI
14AQI
18th March 2025
15AQI
15AQI
19th March 2025
18AQI
18AQI
20th March 2025
14AQI
14AQI
21st March 2025
31AQI
31AQI
22nd March 2025
21AQI
21AQI
23rd March 2025
17AQI
17AQI
24th March 2025
17AQI
17AQI
25th March 2025
22AQI
22AQI
26th March 2025
19AQI
19AQI
27th March 2025
17AQI
17AQI
28th March 2025
18AQI
18AQI
29th March 2025
20AQI
20AQI
30th March 2025
18AQI
18AQI
31st March 2025
19AQI
19AQI
1st April 2025
16AQI
16AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
17AQI
17AQI
4th April 2025
17AQI
17AQI
5th April 2025
14AQI
14AQI
6th April 2025
11AQI
11AQI
7th April 2025
15AQI
15AQI
8th April 2025
13AQI
13AQI
9th April 2025
14AQI
14AQI
10th April 2025
17AQI
17AQI
11th April 2025
15AQI
15AQI
12th April 2025
22AQI
22AQI
13th April 2025
26AQI
26AQI
14th April 2025
15AQI
15AQI
15th April 2025
18AQI
18AQI
16th April 2025
23AQI
23AQI
17th April 2025
12AQI
12AQI
18th April 2025
14AQI
14AQI
19th April 2025
34AQI
34AQI
20th April 2025
24AQI
24AQI
21st April 2025
12AQI
12AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
15AQI
15AQI
24th April 2025
16AQI
16AQI
25th April 2025
23AQI
23AQI
26th April 2025
19AQI
19AQI
27th April 2025
9AQI
9AQI
28th April 2025
16AQI
16AQI
29th April 2025
24AQI
24AQI
30th April 2025
21AQI
21AQI
1st May 2025
15AQI
15AQI
2nd May 2025
21AQI
21AQI
3rd May 2025
23AQI
23AQI
4th May 2025
19AQI
19AQI
5th May 2025
16AQI
16AQI
6th May 2025
15AQI
15AQI
7th May 2025
18AQI
18AQI
8th May 2025
18AQI
18AQI
9th May 2025
16AQI
16AQI
10th May 2025
13AQI
13AQI
11th May 2025
16AQI
16AQI
12th May 2025
19AQI
19AQI
13th May 2025
21AQI
21AQI
14th May 2025
21AQI
21AQI
15th May 2025
25AQI
25AQI
16th May 2025
28AQI
28AQI
17th May 2025
21AQI
21AQI
18th May 2025
16AQI
16AQI
19th May 2025
12AQI
12AQI
20th May 2025
12AQI
12AQI
21st May 2025
14AQI
14AQI
22nd May 2025
15AQI
15AQI
23rd May 2025
11AQI
11AQI
24th May 2025
11AQI
11AQI
25th May 2025
12AQI
12AQI
26th May 2025
16AQI
16AQI
27th May 2025
21AQI
21AQI
28th May 2025
24AQI
24AQI
29th May 2025
21AQI
21AQI
30th May 2025
23AQI
23AQI
31st May 2025
19AQI
19AQI
1st June 2025
15AQI
15AQI
2nd June 2025
16AQI
16AQI
3rd June 2025
22AQI
22AQI
4th June 2025
36AQI
36AQI
5th June 2025
57AQI
57AQI
6th June 2025
61AQI
61AQI
7th June 2025
55AQI
55AQI
8th June 2025
67AQI
67AQI
9th June 2025
64AQI
64AQI
10th June 2025
34AQI
34AQI
11th June 2025
43AQI
43AQI
12th June 2025
65AQI
65AQI
13th June 2025
40AQI
40AQI
14th June 2025
36AQI
36AQI
15th June 2025
29AQI
29AQI
16th June 2025
28AQI
28AQI
17th June 2025
24AQI
24AQI
18th June 2025
17AQI
17AQI
19th June 2025
23AQI
23AQI
20th June 2025
31AQI
31AQI
21st June 2025
34AQI
34AQI
22nd June 2025
38AQI
38AQI
23rd June 2025
41AQI
41AQI
24th June 2025
53AQI
53AQI
25th June 2025
50AQI
50AQI
26th June 2025
28AQI
28AQI
27th June 2025
25AQI
25AQI
28th June 2025
22AQI
22AQI
29th June 2025
25AQI
25AQI
30th June 2025
30AQI
30AQI
1st July 2025
32AQI
32AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
49AQI
49AQI
4th July 2025
38AQI
38AQI
5th July 2025
31AQI
31AQI
6th July 2025
43AQI
43AQI
7th July 2025
52AQI
52AQI
8th July 2025
28AQI
28AQI
9th July 2025
26AQI
26AQI
10th July 2025
28AQI
28AQI
11th July 2025
29AQI
29AQI
12th July 2025
30AQI
30AQI
13th July 2025
24AQI
24AQI
14th July 2025
22AQI
22AQI
15th July 2025
43AQI
43AQI
16th July 2025
49AQI
49AQI
17th July 2025
31AQI
31AQI
18th July 2025
20AQI
20AQI
19th July 2025
24AQI
24AQI
20th July 2025
23AQI
23AQI
21st July 2025
27AQI
27AQI
22nd July 2025
16AQI
16AQI
23rd July 2025
23AQI
23AQI
24th July 2025
29AQI
29AQI
25th July 2025
45AQI
45AQI
26th July 2025
93AQI
93AQI
27th July 2025
73AQI
73AQI
28th July 2025
55AQI
55AQI
29th July 2025
54AQI
54AQI
30th July 2025
51AQI
51AQI
31st July 2025
63AQI
63AQI
1st August 2025
42AQI
42AQI
2nd August 2025
36AQI
36AQI
3rd August 2025
71AQI
71AQI
4th August 2025
89AQI
89AQI
5th August 2025
68AQI
68AQI
6th August 2025
44AQI
44AQI
7th August 2025
46AQI
46AQI
8th August 2025
43AQI
43AQI
9th August 2025
39AQI
39AQI
10th August 2025
37AQI
37AQI
23AQI
23AQI
21AQI
18AQI
18AQI
37AQI
38AQI
52AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202526AQI
31
28
31
30
31
23
7
24
7
7
3
205
17
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
April18AQI
202419AQI
31
29
31
30
31
29
1
29
2
28
3
30
31
30
31
360
6
Highest AQI recorded in
August26AQI
Lowest AQI recorded in
January16AQI
202321AQI
30
28
31
30
31
25
5
31
29
2
24
6
27
1
29
31
346
14
Highest AQI recorded in
July27AQI
Lowest AQI recorded in
November16AQI
202219AQI
31
21
31
30
31
30
21
3
2
29
31
30
26
1
313
4
Highest AQI recorded in
July32AQI
Lowest AQI recorded in
August14AQI
202119AQI
30
28
31
30
31
29
1
28
3
28
3
30
31
27
31
354
7
Highest AQI recorded in
August28AQI
Lowest AQI recorded in
October14AQI
202014AQI
13
18
18
30
31
31
30
31
30
31
263
Highest AQI recorded in
March18AQI
Lowest AQI recorded in
October12AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
26AQILeast Polluted Year Recorded
2020(Avg.)
14AQIBar Harbor's annual 2025 AQI (26) shows an average percentage change of 45.07% (worsened AQI) compared to previous years: 2020 (14), 2021 (19), 2022 (19), 2023 (21), 2024 (19).
