Portland, Maine, United States 历史空气质量分析
深入了解详细的空气质量数据，包括历史数据、月度模式和年度趋势，尽在掌握！
良好
050
适中
100
差
150
不健康
200
严重
300
危险
301+
八月空气质量分析
Portland, Maine, United States
2021
2022
2023
2024
2025
AQI
.
天数
AQI趋势：最高与最低
最高AQI记录于
4th Aug 2025
82AQI最低AQI记录于
22nd Aug 2021
11AQI同日分析（21st August ）：
在过去5年的这一天，AQI差异显著：2025年排名为3rd 最高，AQI为17，属于良好空气质量，比2023和2021年有所改善。
下载2024年度数据
全球空气质量报告
日夜AQI趋势：21st Aug - 22nd Aug 2025
Portland, Maine, United States
AQI
天
夜晚
.
5 AM21st Aug 2025
7 PM
4 AM22nd Aug 2025
白天时间
平均最高时间
12PM21st Aug
24AQI
平均最低时间
7AM21st Aug
18AQI
夜晚时间
平均最高时间
1AM22nd Aug
23AQI
平均最低时间
8PM21st Aug
20AQI
在过去的24小时内，
Portland的AQI最高点为24，出现在天的12 PM；最低点为18，出现在天的7 AM。
日夜AQI趋势：Jul - Aug 2025
Portland, Maine, United States
JulAug
23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd
天
夜晚
23rd Jul 2025215 AMAQI
23rd Jul 2025186 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025208 AMAQI
23rd Jul 2025219 AMAQI
23rd Jul 20252310 AMAQI
23rd Jul 20252511 AMAQI
23rd Jul 20252712 PMAQI
23rd Jul 2025271 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025264 PMAQI
23rd Jul 2025265 PMAQI
23rd Jul 2025256 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025239 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20252112 AMAQI
24th Jul 2025211 AMAQI
24th Jul 2025202 AMAQI
24th Jul 2025203 AMAQI
24th Jul 2025194 AMAQI
19°C17/23°C
24th Jul 2025205 AMAQI
24th Jul 2025236 AMAQI
24th Jul 2025217 AMAQI
24th Jul 2025228 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252310 AMAQI
24th Jul 20252311 AMAQI
24th Jul 20252412 PMAQI
24th Jul 2025271 PMAQI
24th Jul 2025282 PMAQI
24th Jul 2025273 PMAQI
24th Jul 2025284 PMAQI
24th Jul 2025295 PMAQI
24th Jul 2025306 PMAQI
24th Jul 2025267 PMAQI
24th Jul 2025268 PMAQI
24th Jul 2025299 PMAQI
24th Jul 20252710 PMAQI
24th Jul 20252511 PMAQI
25th Jul 20252412 AMAQI
25th Jul 2025231 AMAQI
25th Jul 2025252 AMAQI
25th Jul 2025263 AMAQI
25th Jul 2025284 AMAQI
21°C17/26°C
25th Jul 2025295 AMAQI
25th Jul 2025286 AMAQI
25th Jul 2025287 AMAQI
25th Jul 2025278 AMAQI
25th Jul 2025279 AMAQI
25th Jul 20252610 AMAQI
25th Jul 20252711 AMAQI
25th Jul 20252712 PMAQI
25th Jul 2025271 PMAQI
25th Jul 2025292 PMAQI
25th Jul 2025283 PMAQI
25th Jul 2025274 PMAQI
25th Jul 2025265 PMAQI
25th Jul 2025256 PMAQI
25th Jul 2025267 PMAQI
25th Jul 2025268 PMAQI
25th Jul 2025249 PMAQI
25th Jul 20252610 PMAQI
25th Jul 20252811 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025461 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025523 AMAQI
26th Jul 2025534 AMAQI
23°C20/27°C
26th Jul 2025525 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025537 AMAQI
26th Jul 2025508 AMAQI
26th Jul 2025469 AMAQI
26th Jul 20254310 AMAQI
26th Jul 20254011 AMAQI
26th Jul 20253712 PMAQI
26th Jul 2025351 PMAQI
26th Jul 2025352 PMAQI
26th Jul 2025353 PMAQI
26th Jul 2025374 PMAQI
26th Jul 2025375 PMAQI
26th Jul 2025366 PMAQI
26th Jul 2025397 PMAQI
26th Jul 2025368 PMAQI
26th Jul 2025369 PMAQI
26th Jul 20253610 PMAQI
26th Jul 20253711 PMAQI
27th Jul 20253612 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025333 AMAQI
27th Jul 2025354 AMAQI
20°C17/25°C
27th Jul 2025375 AMAQI
27th Jul 2025386 AMAQI
27th Jul 2025387 AMAQI
27th Jul 2025398 AMAQI
27th Jul 2025409 AMAQI
27th Jul 20254110 AMAQI
27th Jul 20254111 AMAQI
27th Jul 20254112 PMAQI
27th Jul 2025421 PMAQI
27th Jul 2025402 PMAQI
27th Jul 2025413 PMAQI
27th Jul 2025394 PMAQI
27th Jul 2025395 PMAQI
27th Jul 2025376 PMAQI
27th Jul 2025387 PMAQI
27th Jul 2025378 PMAQI
27th Jul 2025359 PMAQI
27th Jul 20253410 PMAQI
27th Jul 20253511 PMAQI
28th Jul 20253512 AMAQI
28th Jul 2025351 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025323 AMAQI
28th Jul 2025304 AMAQI
18°C16/20°C
28th Jul 2025315 AMAQI
28th Jul 2025296 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025308 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20253110 AMAQI
28th Jul 20253211 AMAQI
28th Jul 20253312 PMAQI
28th Jul 2025331 PMAQI
28th Jul 2025342 PMAQI
28th Jul 2025333 PMAQI
28th Jul 2025334 PMAQI
28th Jul 2025335 PMAQI
28th Jul 2025326 PMAQI
28th Jul 2025337 PMAQI
28th Jul 2025338 PMAQI
28th Jul 2025329 PMAQI
28th Jul 20253210 PMAQI
28th Jul 20253111 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025292 AMAQI
29th Jul 2025273 AMAQI
29th Jul 2025284 AMAQI
19°C16/22°C
29th Jul 2025285 AMAQI
29th Jul 2025286 AMAQI
29th Jul 2025297 AMAQI
29th Jul 2025298 AMAQI
29th Jul 2025299 AMAQI
29th Jul 20253010 AMAQI
29th Jul 20253111 AMAQI
29th Jul 20253212 PMAQI
29th Jul 2025301 PMAQI
29th Jul 2025322 PMAQI
29th Jul 2025313 PMAQI
29th Jul 2025314 PMAQI
29th Jul 2025315 PMAQI
29th Jul 2025316 PMAQI
29th Jul 2025307 PMAQI
29th Jul 2025318 PMAQI
29th Jul 2025309 PMAQI
29th Jul 20252910 PMAQI
29th Jul 20253011 PMAQI
30th Jul 20253112 AMAQI
30th Jul 2025291 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025283 AMAQI
30th Jul 2025274 AMAQI
23°C17/30°C
30th Jul 2025275 AMAQI
30th Jul 2025276 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025288 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20252810 AMAQI
30th Jul 20252811 AMAQI
30th Jul 20252912 PMAQI
30th Jul 2025291 PMAQI
30th Jul 2025312 PMAQI
30th Jul 2025313 PMAQI
30th Jul 2025314 PMAQI
30th Jul 2025315 PMAQI
30th Jul 2025316 PMAQI
30th Jul 2025317 PMAQI
30th Jul 2025318 PMAQI
30th Jul 2025349 PMAQI
30th Jul 20253410 PMAQI
30th Jul 20253311 PMAQI
31st Jul 20253212 AMAQI
31st Jul 2025311 AMAQI
31st Jul 2025312 AMAQI
31st Jul 2025293 AMAQI
31st Jul 2025284 AMAQI
21°C19/23°C
31st Jul 2025275 AMAQI
31st Jul 2025286 AMAQI
31st Jul 2025327 AMAQI
31st Jul 2025328 AMAQI
31st Jul 2025339 AMAQI
31st Jul 20253610 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20254412 PMAQI
31st Jul 2025441 PMAQI
31st Jul 2025422 PMAQI
31st Jul 2025383 PMAQI
31st Jul 2025374 PMAQI
31st Jul 2025375 PMAQI
31st Jul 2025376 PMAQI
31st Jul 2025367 PMAQI
31st Jul 2025388 PMAQI
31st Jul 2025389 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253811 PMAQI
1st Aug 20253512 AMAQI
1st Aug 2025341 AMAQI
1st Aug 2025332 AMAQI
1st Aug 2025333 AMAQI
1st Aug 2025344 AMAQI
18°C16/20°C
1st Aug 2025325 AMAQI
1st Aug 2025316 AMAQI
1st Aug 2025297 AMAQI
1st Aug 2025278 AMAQI
1st Aug 2025259 AMAQI
1st Aug 20252410 AMAQI
1st Aug 20252211 AMAQI
1st Aug 20252112 PMAQI
1st Aug 2025221 PMAQI
1st Aug 2025212 PMAQI
1st Aug 2025213 PMAQI
1st Aug 2025194 PMAQI
1st Aug 2025195 PMAQI
1st Aug 2025186 PMAQI
1st Aug 2025297 PMAQI
1st Aug 2025248 PMAQI
1st Aug 2025199 PMAQI
1st Aug 20252110 PMAQI
1st Aug 20252311 PMAQI
2nd Aug 20252512 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025202 AMAQI
2nd Aug 2025203 AMAQI
2nd Aug 2025194 AMAQI
18°C16/21°C
2nd Aug 2025185 AMAQI
2nd Aug 2025176 AMAQI
2nd Aug 2025177 AMAQI
2nd Aug 2025178 AMAQI
2nd Aug 2025169 AMAQI
2nd Aug 20251710 AMAQI
2nd Aug 20251611 AMAQI
2nd Aug 20251612 PMAQI
2nd Aug 2025161 PMAQI
2nd Aug 2025152 PMAQI
2nd Aug 2025163 PMAQI
2nd Aug 2025164 PMAQI
2nd Aug 2025165 PMAQI
2nd Aug 2025166 PMAQI
2nd Aug 2025187 PMAQI
2nd Aug 2025188 PMAQI
2nd Aug 2025209 PMAQI
2nd Aug 20252410 PMAQI
2nd Aug 20252411 PMAQI
3rd Aug 20252612 AMAQI
3rd Aug 2025271 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025253 AMAQI
3rd Aug 2025244 AMAQI
19°C15/24°C
3rd Aug 2025235 AMAQI
3rd Aug 2025246 AMAQI
3rd Aug 2025267 AMAQI
3rd Aug 2025278 AMAQI
3rd Aug 2025289 AMAQI
3rd Aug 20252810 AMAQI
3rd Aug 20252911 AMAQI
3rd Aug 20253012 PMAQI
3rd Aug 2025321 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025353 PMAQI
3rd Aug 2025354 PMAQI
3rd Aug 2025375 PMAQI
3rd Aug 2025356 PMAQI
3rd Aug 2025307 PMAQI
3rd Aug 2025328 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20253110 PMAQI
3rd Aug 20253011 PMAQI
4th Aug 20253012 AMAQI
4th Aug 2025311 AMAQI
4th Aug 2025332 AMAQI
4th Aug 2025313 AMAQI
4th Aug 2025324 AMAQI
20°C15/24°C
4th Aug 2025315 AMAQI
4th Aug 2025316 AMAQI
4th Aug 2025327 AMAQI
4th Aug 2025348 AMAQI
4th Aug 2025359 AMAQI
4th Aug 20253710 AMAQI
4th Aug 20253911 AMAQI
4th Aug 20254112 PMAQI
4th Aug 2025451 PMAQI
4th Aug 2025462 PMAQI
4th Aug 2025463 PMAQI
4th Aug 2025494 PMAQI
4th Aug 2025495 PMAQI
4th Aug 2025526 PMAQI
4th Aug 2025347 PMAQI
4th Aug 2025478 PMAQI
4th Aug 2025569 PMAQI
4th Aug 20256310 PMAQI
4th Aug 20256511 PMAQI
5th Aug 20256812 AMAQI
5th Aug 2025661 AMAQI
5th Aug 2025622 AMAQI
5th Aug 2025603 AMAQI
5th Aug 2025604 AMAQI
21°C17/26°C
5th Aug 2025585 AMAQI
5th Aug 2025546 AMAQI
5th Aug 2025507 AMAQI
5th Aug 2025448 AMAQI
5th Aug 2025429 AMAQI
5th Aug 20254110 AMAQI
5th Aug 20253611 AMAQI
5th Aug 20253612 PMAQI
5th Aug 2025361 PMAQI
5th Aug 2025402 PMAQI
5th Aug 2025433 PMAQI
5th Aug 2025434 PMAQI
5th Aug 2025425 PMAQI
5th Aug 2025416 PMAQI
5th Aug 2025477 PMAQI
5th Aug 2025438 PMAQI
5th Aug 2025359 PMAQI
5th Aug 20253510 PMAQI
5th Aug 20253511 PMAQI
6th Aug 20253312 AMAQI
6th Aug 2025311 AMAQI
6th Aug 2025282 AMAQI
6th Aug 2025273 AMAQI
6th Aug 2025264 AMAQI
20°C18/23°C
6th Aug 2025265 AMAQI
6th Aug 2025266 AMAQI
6th Aug 2025277 AMAQI
6th Aug 2025288 AMAQI
6th Aug 2025289 AMAQI
6th Aug 20252710 AMAQI
6th Aug 20252611 AMAQI
6th Aug 20252712 PMAQI
6th Aug 2025281 PMAQI
6th Aug 2025282 PMAQI
6th Aug 2025293 PMAQI
6th Aug 2025294 PMAQI
6th Aug 2025305 PMAQI
6th Aug 2025306 PMAQI
6th Aug 2025287 PMAQI
6th Aug 2025298 PMAQI
6th Aug 2025299 PMAQI
6th Aug 20252810 PMAQI
6th Aug 20253111 PMAQI
7th Aug 20253012 AMAQI
7th Aug 2025321 AMAQI
7th Aug 2025312 AMAQI
7th Aug 2025303 AMAQI
7th Aug 2025304 AMAQI
18°C17/20°C
7th Aug 2025315 AMAQI
7th Aug 2025336 AMAQI
7th Aug 2025327 AMAQI
7th Aug 2025318 AMAQI
7th Aug 2025329 AMAQI
7th Aug 20253110 AMAQI
7th Aug 20253011 AMAQI
7th Aug 20252912 PMAQI
7th Aug 2025311 PMAQI
7th Aug 2025302 PMAQI
7th Aug 2025303 PMAQI
7th Aug 2025294 PMAQI
7th Aug 2025295 PMAQI
7th Aug 2025286 PMAQI
7th Aug 2025297 PMAQI
7th Aug 2025298 PMAQI
7th Aug 2025289 PMAQI
7th Aug 20252810 PMAQI
7th Aug 20252911 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025251 AMAQI
8th Aug 2025222 AMAQI
8th Aug 2025203 AMAQI
8th Aug 2025194 AMAQI
18°C14/21°C
8th Aug 2025185 AMAQI
8th Aug 2025206 AMAQI
8th Aug 2025227 AMAQI
8th Aug 2025228 AMAQI
8th Aug 2025229 AMAQI
8th Aug 20252310 AMAQI
8th Aug 20252411 AMAQI
8th Aug 20252612 PMAQI
8th Aug 2025251 PMAQI
8th Aug 2025242 PMAQI
8th Aug 2025233 PMAQI
8th Aug 2025244 PMAQI
8th Aug 2025245 PMAQI
8th Aug 2025246 PMAQI
8th Aug 2025237 PMAQI
8th Aug 2025238 PMAQI
8th Aug 2025239 PMAQI
8th Aug 20252410 PMAQI
8th Aug 20252411 PMAQI
9th Aug 20252412 AMAQI
9th Aug 2025231 AMAQI
9th Aug 2025242 AMAQI
9th Aug 2025243 AMAQI
9th Aug 2025224 AMAQI
20°C18/22°C
9th Aug 2025235 AMAQI
9th Aug 2025236 AMAQI
9th Aug 2025247 AMAQI
9th Aug 2025238 AMAQI
9th Aug 2025239 AMAQI
9th Aug 20252210 AMAQI
9th Aug 20252411 AMAQI
9th Aug 20252712 PMAQI
9th Aug 2025241 PMAQI
9th Aug 2025242 PMAQI
9th Aug 2025253 PMAQI
9th Aug 2025244 PMAQI
9th Aug 2025235 PMAQI
9th Aug 2025236 PMAQI
9th Aug 2025237 PMAQI
9th Aug 2025248 PMAQI
9th Aug 2025249 PMAQI
9th Aug 20252410 PMAQI
9th Aug 20252511 PMAQI
10th Aug 20252612 AMAQI
10th Aug 2025261 AMAQI
10th Aug 2025262 AMAQI
10th Aug 2025253 AMAQI
10th Aug 2025254 AMAQI
19°C17/23°C
10th Aug 2025265 AMAQI
10th Aug 2025276 AMAQI
10th Aug 2025257 AMAQI
10th Aug 2025278 AMAQI
10th Aug 2025269 AMAQI
10th Aug 20252610 AMAQI
10th Aug 20252711 AMAQI
10th Aug 20252812 PMAQI
10th Aug 2025301 PMAQI
10th Aug 2025322 PMAQI
10th Aug 2025313 PMAQI
10th Aug 2025324 PMAQI
10th Aug 2025325 PMAQI
10th Aug 2025316 PMAQI
10th Aug 2025287 PMAQI
10th Aug 2025298 PMAQI
10th Aug 2025319 PMAQI
10th Aug 20253010 PMAQI
10th Aug 20253011 PMAQI
11th Aug 20252812 AMAQI
11th Aug 2025291 AMAQI
11th Aug 2025272 AMAQI
11th Aug 2025273 AMAQI
11th Aug 2025274 AMAQI
19°C17/21°C
11th Aug 2025275 AMAQI
11th Aug 2025286 AMAQI
11th Aug 2025297 AMAQI
11th Aug 2025308 AMAQI
11th Aug 2025329 AMAQI
11th Aug 20253310 AMAQI
11th Aug 20253611 AMAQI
11th Aug 20253812 PMAQI
11th Aug 2025391 PMAQI
11th Aug 2025412 PMAQI
11th Aug 2025423 PMAQI
11th Aug 2025414 PMAQI
11th Aug 2025415 PMAQI
11th Aug 2025406 PMAQI
11th Aug 2025347 PMAQI
11th Aug 2025358 PMAQI
11th Aug 2025359 PMAQI
11th Aug 20253410 PMAQI
11th Aug 20253511 PMAQI
12th Aug 20253412 AMAQI
12th Aug 2025351 AMAQI
12th Aug 2025352 AMAQI
12th Aug 2025373 AMAQI
12th Aug 2025404 AMAQI
20°C18/22°C
12th Aug 2025405 AMAQI
12th Aug 2025396 AMAQI
12th Aug 2025407 AMAQI
12th Aug 2025418 AMAQI
12th Aug 2025409 AMAQI
12th Aug 20254110 AMAQI
12th Aug 20254211 AMAQI
12th Aug 20254412 PMAQI
12th Aug 2025451 PMAQI
12th Aug 2025472 PMAQI
12th Aug 2025473 PMAQI
12th Aug 2025474 PMAQI
12th Aug 2025465 PMAQI
12th Aug 2025436 PMAQI
12th Aug 2025407 PMAQI
12th Aug 2025408 PMAQI
12th Aug 2025419 PMAQI
12th Aug 20254310 PMAQI
12th Aug 20254711 PMAQI
13th Aug 20254712 AMAQI
13th Aug 2025461 AMAQI
13th Aug 2025452 AMAQI
13th Aug 2025453 AMAQI
13th Aug 2025474 AMAQI
20°C18/22°C
13th Aug 2025495 AMAQI
13th Aug 2025486 AMAQI
13th Aug 2025497 AMAQI
13th Aug 2025458 AMAQI
13th Aug 2025429 AMAQI
13th Aug 20254110 AMAQI
13th Aug 20253911 AMAQI
13th Aug 20254012 PMAQI
13th Aug 2025391 PMAQI
13th Aug 2025382 PMAQI
13th Aug 2025373 PMAQI
13th Aug 2025374 PMAQI
13th Aug 2025355 PMAQI
13th Aug 2025326 PMAQI
13th Aug 2025417 PMAQI
13th Aug 2025358 PMAQI
13th Aug 2025309 PMAQI
13th Aug 20252810 PMAQI
13th Aug 20252611 PMAQI
14th Aug 20252512 AMAQI
14th Aug 2025241 AMAQI
14th Aug 2025252 AMAQI
14th Aug 2025253 AMAQI
14th Aug 2025244 AMAQI
19°C16/21°C
14th Aug 2025245 AMAQI
14th Aug 2025236 AMAQI
14th Aug 2025237 AMAQI
14th Aug 2025248 AMAQI
14th Aug 2025249 AMAQI
14th Aug 20252710 AMAQI
14th Aug 20252711 AMAQI
14th Aug 20252712 PMAQI
14th Aug 2025281 PMAQI
14th Aug 2025262 PMAQI
14th Aug 2025253 PMAQI
14th Aug 2025254 PMAQI
14th Aug 2025245 PMAQI
14th Aug 2025246 PMAQI
14th Aug 2025267 PMAQI
14th Aug 2025268 PMAQI
14th Aug 2025269 PMAQI
14th Aug 20252810 PMAQI
14th Aug 20253111 PMAQI
15th Aug 20253112 AMAQI
15th Aug 2025291 AMAQI
15th Aug 2025282 AMAQI
15th Aug 2025253 AMAQI
15th Aug 2025224 AMAQI
22°C21/25°C
15th Aug 2025205 AMAQI
15th Aug 2025206 AMAQI
15th Aug 2025177 AMAQI
15th Aug 2025188 AMAQI
15th Aug 2025179 AMAQI
15th Aug 20251610 AMAQI
15th Aug 20251711 AMAQI
15th Aug 20251512 PMAQI
15th Aug 2025151 PMAQI
15th Aug 2025152 PMAQI
15th Aug 2025163 PMAQI
15th Aug 2025154 PMAQI
15th Aug 2025165 PMAQI
15th Aug 2025156 PMAQI
15th Aug 2025187 PMAQI
15th Aug 2025178 PMAQI
15th Aug 2025169 PMAQI
15th Aug 20251610 PMAQI
15th Aug 20251811 PMAQI
16th Aug 20251912 AMAQI
16th Aug 2025191 AMAQI
16th Aug 2025182 AMAQI
16th Aug 2025163 AMAQI
16th Aug 2025154 AMAQI
21°C19/25°C
16th Aug 2025155 AMAQI
16th Aug 2025156 AMAQI
16th Aug 2025157 AMAQI
16th Aug 2025158 AMAQI
16th Aug 2025169 AMAQI
16th Aug 20251810 AMAQI
16th Aug 20251911 AMAQI
16th Aug 20252112 PMAQI
16th Aug 2025211 PMAQI
16th Aug 2025212 PMAQI
16th Aug 2025203 PMAQI
16th Aug 2025204 PMAQI
16th Aug 2025195 PMAQI
16th Aug 2025196 PMAQI
16th Aug 2025187 PMAQI
16th Aug 2025188 PMAQI
16th Aug 2025199 PMAQI
16th Aug 20251810 PMAQI
16th Aug 20252011 PMAQI
17th Aug 20252012 AMAQI
17th Aug 2025211 AMAQI
17th Aug 2025212 AMAQI
17th Aug 2025203 AMAQI
17th Aug 2025214 AMAQI
20°C17/23°C
17th Aug 2025215 AMAQI
17th Aug 2025216 AMAQI
17th Aug 2025217 AMAQI
17th Aug 2025228 AMAQI
17th Aug 2025249 AMAQI
17th Aug 20252510 AMAQI
17th Aug 20252611 AMAQI
17th Aug 20252512 PMAQI
17th Aug 2025261 PMAQI
17th Aug 2025252 PMAQI
17th Aug 2025243 PMAQI
17th Aug 2025254 PMAQI
17th Aug 2025255 PMAQI
17th Aug 2025256 PMAQI
17th Aug 2025237 PMAQI
17th Aug 2025228 PMAQI
17th Aug 2025209 PMAQI
17th Aug 20251910 PMAQI
17th Aug 20251911 PMAQI
18th Aug 20251912 AMAQI
18th Aug 2025191 AMAQI
18th Aug 2025182 AMAQI
18th Aug 2025193 AMAQI
18th Aug 2025184 AMAQI
20°C17/23°C
18th Aug 2025195 AMAQI
18th Aug 2025186 AMAQI
18th Aug 2025197 AMAQI
18th Aug 2025188 AMAQI
18th Aug 2025179 AMAQI
18th Aug 20251810 AMAQI
18th Aug 20251711 AMAQI
18th Aug 20251712 PMAQI
18th Aug 2025171 PMAQI
18th Aug 2025162 PMAQI
18th Aug 2025163 PMAQI
18th Aug 2025154 PMAQI
18th Aug 2025165 PMAQI
18th Aug 2025166 PMAQI
18th Aug 2025177 PMAQI
18th Aug 2025168 PMAQI
18th Aug 2025189 PMAQI
18th Aug 20251910 PMAQI
18th Aug 20252011 PMAQI
19th Aug 20251912 AMAQI
19th Aug 2025191 AMAQI
19th Aug 2025192 AMAQI
19th Aug 2025183 AMAQI
19th Aug 2025204 AMAQI
18°C14/20°C
19th Aug 2025205 AMAQI
19th Aug 2025196 AMAQI
19th Aug 2025197 AMAQI
19th Aug 2025198 AMAQI
19th Aug 2025209 AMAQI
19th Aug 20252110 AMAQI
19th Aug 20252211 AMAQI
19th Aug 20252412 PMAQI
19th Aug 2025221 PMAQI
19th Aug 2025202 PMAQI
19th Aug 2025193 PMAQI
19th Aug 2025184 PMAQI
19th Aug 2025175 PMAQI
19th Aug 2025176 PMAQI
19th Aug 2025187 PMAQI
19th Aug 2025188 PMAQI
19th Aug 2025179 PMAQI
19th Aug 20251710 PMAQI
19th Aug 20251711 PMAQI
20th Aug 20251712 AMAQI
20th Aug 2025171 AMAQI
20th Aug 2025182 AMAQI
20th Aug 2025193 AMAQI
20th Aug 2025194 AMAQI
17°C13/21°C
20th Aug 2025195 AMAQI
20th Aug 2025196 AMAQI
20th Aug 2025197 AMAQI
20th Aug 2025208 AMAQI
20th Aug 2025219 AMAQI
20th Aug 20252110 AMAQI
20th Aug 20252211 AMAQI
20th Aug 20252212 PMAQI
20th Aug 2025211 PMAQI
20th Aug 2025212 PMAQI
20th Aug 2025203 PMAQI
20th Aug 2025204 PMAQI
20th Aug 2025175 PMAQI
20th Aug 2025166 PMAQI
20th Aug 2025187 PMAQI
20th Aug 2025178 PMAQI
20th Aug 2025179 PMAQI
20th Aug 20251610 PMAQI
20th Aug 20251611 PMAQI
21st Aug 20251612 AMAQI
21st Aug 2025171 AMAQI
21st Aug 2025172 AMAQI
21st Aug 2025163 AMAQI
21st Aug 2025174 AMAQI
18°C17/19°C
21st Aug 2025185 AMAQI
21st Aug 2025196 AMAQI
21st Aug 2025187 AMAQI
21st Aug 2025198 AMAQI
21st Aug 2025209 AMAQI
21st Aug 20252210 AMAQI
21st Aug 20252311 AMAQI
21st Aug 20252412 PMAQI
21st Aug 2025241 PMAQI
21st Aug 2025242 PMAQI
21st Aug 2025223 PMAQI
21st Aug 2025224 PMAQI
21st Aug 2025215 PMAQI
21st Aug 2025216 PMAQI
21st Aug 2025197 PMAQI
21st Aug 2025208 PMAQI
21st Aug 2025219 PMAQI
21st Aug 20252110 PMAQI
21st Aug 20252211 PMAQI
22nd Aug 20252212 AMAQI
22nd Aug 2025231 AMAQI
22nd Aug 2025232 AMAQI
22nd Aug 2025233 AMAQI
22nd Aug 2025234 AMAQI
16°C12/18°C
22nd Aug 2025235 AMAQI
5 AM22nd Aug 2025236 AMAQI
22nd Aug 2025247 AMAQI
22nd Aug 2025268 AMAQI
22nd Aug 2025309 AMAQI
22nd Aug 20253110 AMAQI
22nd Aug 20253311 AMAQI
22nd Aug 20253312 PMAQI
12 PM22nd Aug 2025321 PMAQI
22nd Aug 2025312 PMAQI
22nd Aug 2025303 PMAQI
22nd Aug 2025314 PMAQI
22nd Aug 2025315 PMAQI
7 PM
12 AM
4 AM
--°C/°C
白天时间
平均最高时间
2 PM
30AQI
1 小时 / 天
30 小时 / 月
平均最低时间
6 AM
27AQI
1 小时 / 天
30 小时 / 月
过去30天中，白天AQI最高值为2 PM到2 PM（平均30），最低值为6 AM到6 AM（平均27）。
夜晚时间
平均最高时间
11 PM
29AQI
1 小时 / 天
30 小时 / 月
平均最低时间
3 AM - 4 AM
27AQI
2 小时 / 天
60 小时 / 月
过去30天中，夜间AQI最高值为11 PM到11 PM（平均29），最低值为3 AM到4 AM（平均27）。
2025空气质量与天数对比
Portland, Maine, United States
2025
91%
213
8%
19
0.4%
1
在2025年的最后234天中，不同AQI类别的总天数 (剩余 131 天)
良好
213 天数适中
19 天数差
1 天数不健康
0 天数严重
0 天数危险
0 天数在WHO安全空气质量限制内：91%
健康风险级别:
非常低
在2025年中，91%的234天在WHO的安全空气质量限制内。健康问题的风险是非常低，但长期影响仍不明确。
年度空气质量洞察
Portland, Maine, United States
2025年AQI水平
AQI
PM2.5
PM10
CO
SO2
NO2
O3
周日周一周二周三周四周五周六
一月
二月
三月
四月
五月
六月
七月
八月
九月
十月
十一月
十二月
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st 一月 2025
24AQI
24AQI
2nd 一月 2025
20AQI
20AQI
3rd 一月 2025
19AQI
19AQI
4th 一月 2025
18AQI
18AQI
5th 一月 2025
19AQI
19AQI
6th 一月 2025
20AQI
20AQI
7th 一月 2025
19AQI
19AQI
8th 一月 2025
17AQI
17AQI
9th 一月 2025
18AQI
18AQI
10th 一月 2025
20AQI
20AQI
11th 一月 2025
25AQI
25AQI
12th 一月 2025
31AQI
31AQI
13th 一月 2025
41AQI
41AQI
14th 一月 2025
25AQI
25AQI
15th 一月 2025
22AQI
22AQI
16th 一月 2025
37AQI
37AQI
17th 一月 2025
43AQI
43AQI
18th 一月 2025
34AQI
34AQI
19th 一月 2025
22AQI
22AQI
20th 一月 2025
23AQI
23AQI
21st 一月 2025
36AQI
36AQI
22nd 一月 2025
50AQI
50AQI
23rd 一月 2025
47AQI
47AQI
24th 一月 2025
45AQI
45AQI
25th 一月 2025
39AQI
39AQI
26th 一月 2025
36AQI
36AQI
27th 一月 2025
22AQI
22AQI
28th 一月 2025
21AQI
21AQI
29th 一月 2025
26AQI
26AQI
30th 一月 2025
24AQI
24AQI
31st 一月 2025
31AQI
31AQI
1st 二月 2025
21AQI
21AQI
2nd 二月 2025
26AQI
26AQI
3rd 二月 2025
33AQI
33AQI
4th 二月 2025
23AQI
23AQI
5th 二月 2025
27AQI
27AQI
6th 二月 2025
38AQI
38AQI
7th 二月 2025
27AQI
27AQI
8th 二月 2025
26AQI
26AQI
9th 二月 2025
23AQI
23AQI
10th 二月 2025
30AQI
30AQI
11th 二月 2025
40AQI
40AQI
12th 二月 2025
29AQI
29AQI
13th 二月 2025
23AQI
23AQI
14th 二月 2025
22AQI
22AQI
15th 二月 2025
22AQI
22AQI
16th 二月 2025
20AQI
20AQI
17th 二月 2025
19AQI
19AQI
18th 二月 2025
19AQI
19AQI
19th 二月 2025
25AQI
25AQI
20th 二月 2025
26AQI
26AQI
21st 二月 2025
20AQI
20AQI
22nd 二月 2025
26AQI
26AQI
23rd 二月 2025
30AQI
30AQI
24th 二月 2025
43AQI
43AQI
25th 二月 2025
44AQI
44AQI
26th 二月 2025
32AQI
32AQI
27th 二月 2025
29AQI
29AQI
28th 二月 2025
21AQI
21AQI
1st 三月 2025
27AQI
27AQI
2nd 三月 2025
20AQI
20AQI
3rd 三月 2025
28AQI
28AQI
4th 三月 2025
37AQI
37AQI
5th 三月 2025
33AQI
33AQI
6th 三月 2025
20AQI
20AQI
7th 三月 2025
18AQI
18AQI
8th 三月 2025
20AQI
20AQI
9th 三月 2025
20AQI
20AQI
10th 三月 2025
23AQI
23AQI
11th 三月 2025
28AQI
28AQI
12th 三月 2025
21AQI
21AQI
13th 三月 2025
22AQI
22AQI
14th 三月 2025
29AQI
29AQI
15th 三月 2025
24AQI
24AQI
16th 三月 2025
28AQI
28AQI
17th 三月 2025
21AQI
21AQI
18th 三月 2025
23AQI
23AQI
19th 三月 2025
24AQI
24AQI
20th 三月 2025
15AQI
15AQI
21st 三月 2025
14AQI
14AQI
22nd 三月 2025
20AQI
20AQI
23rd 三月 2025
17AQI
17AQI
24th 三月 2025
20AQI
20AQI
25th 三月 2025
23AQI
23AQI
26th 三月 2025
23AQI
23AQI
27th 三月 2025
20AQI
20AQI
28th 三月 2025
20AQI
20AQI
29th 三月 2025
18AQI
18AQI
30th 三月 2025
26AQI
26AQI
31st 三月 2025
23AQI
23AQI
1st 四月 2025
18AQI
18AQI
2nd 四月 2025
17AQI
17AQI
3rd 四月 2025
22AQI
22AQI
4th 四月 2025
23AQI
23AQI
5th 四月 2025
20AQI
20AQI
6th 四月 2025
13AQI
13AQI
7th 四月 2025
15AQI
15AQI
8th 四月 2025
15AQI
15AQI
9th 四月 2025
20AQI
20AQI
10th 四月 2025
21AQI
21AQI
11th 四月 2025
22AQI
22AQI
12th 四月 2025
17AQI
17AQI
13th 四月 2025
20AQI
20AQI
14th 四月 2025
17AQI
17AQI
15th 四月 2025
33AQI
33AQI
16th 四月 2025
18AQI
18AQI
17th 四月 2025
19AQI
19AQI
18th 四月 2025
24AQI
24AQI
19th 四月 2025
44AQI
44AQI
20th 四月 2025
17AQI
17AQI
21st 四月 2025
15AQI
15AQI
22nd 四月 2025
26AQI
26AQI
23rd 四月 2025
20AQI
20AQI
24th 四月 2025
18AQI
18AQI
25th 四月 2025
27AQI
27AQI
26th 四月 2025
25AQI
25AQI
27th 四月 2025
13AQI
13AQI
28th 四月 2025
17AQI
17AQI
29th 四月 2025
34AQI
34AQI
30th 四月 2025
21AQI
21AQI
1st 五月 2025
18AQI
18AQI
2nd 五月 2025
32AQI
32AQI
3rd 五月 2025
35AQI
35AQI
4th 五月 2025
24AQI
24AQI
5th 五月 2025
21AQI
21AQI
6th 五月 2025
18AQI
18AQI
7th 五月 2025
26AQI
26AQI
8th 五月 2025
26AQI
26AQI
9th 五月 2025
21AQI
21AQI
10th 五月 2025
13AQI
13AQI
11th 五月 2025
15AQI
15AQI
12th 五月 2025
20AQI
20AQI
13th 五月 2025
25AQI
25AQI
14th 五月 2025
28AQI
28AQI
15th 五月 2025
38AQI
38AQI
16th 五月 2025
34AQI
34AQI
17th 五月 2025
19AQI
19AQI
18th 五月 2025
15AQI
15AQI
19th 五月 2025
13AQI
13AQI
20th 五月 2025
12AQI
12AQI
21st 五月 2025
16AQI
16AQI
22nd 五月 2025
19AQI
19AQI
23rd 五月 2025
11AQI
11AQI
24th 五月 2025
11AQI
11AQI
25th 五月 2025
13AQI
13AQI
26th 五月 2025
16AQI
16AQI
27th 五月 2025
22AQI
22AQI
28th 五月 2025
29AQI
29AQI
29th 五月 2025
21AQI
21AQI
30th 五月 2025
24AQI
24AQI
31st 五月 2025
23AQI
23AQI
1st 六月 2025
20AQI
20AQI
2nd 六月 2025
20AQI
20AQI
3rd 六月 2025
22AQI
22AQI
4th 六月 2025
42AQI
42AQI
5th 六月 2025
62AQI
62AQI
6th 六月 2025
58AQI
58AQI
7th 六月 2025
52AQI
52AQI
8th 六月 2025
79AQI
79AQI
9th 六月 2025
78AQI
78AQI
10th 六月 2025
37AQI
37AQI
11th 六月 2025
43AQI
43AQI
12th 六月 2025
65AQI
65AQI
13th 六月 2025
38AQI
38AQI
14th 六月 2025
35AQI
35AQI
15th 六月 2025
32AQI
32AQI
16th 六月 2025
29AQI
29AQI
17th 六月 2025
25AQI
25AQI
18th 六月 2025
22AQI
22AQI
19th 六月 2025
32AQI
32AQI
20th 六月 2025
34AQI
34AQI
21st 六月 2025
30AQI
30AQI
22nd 六月 2025
36AQI
36AQI
23rd 六月 2025
48AQI
48AQI
24th 六月 2025
55AQI
55AQI
25th 六月 2025
51AQI
51AQI
26th 六月 2025
31AQI
31AQI
27th 六月 2025
25AQI
25AQI
28th 六月 2025
20AQI
20AQI
29th 六月 2025
25AQI
25AQI
30th 六月 2025
28AQI
28AQI
1st 七月 2025
38AQI
38AQI
2nd 七月 2025
35AQI
35AQI
3rd 七月 2025
46AQI
46AQI
4th 七月 2025
39AQI
39AQI
5th 七月 2025
33AQI
33AQI
6th 七月 2025
46AQI
46AQI
7th 七月 2025
54AQI
54AQI
8th 七月 2025
38AQI
38AQI
9th 七月 2025
29AQI
29AQI
10th 七月 2025
26AQI
26AQI
11th 七月 2025
22AQI
22AQI
12th 七月 2025
23AQI
23AQI
13th 七月 2025
19AQI
19AQI
14th 七月 2025
21AQI
21AQI
15th 七月 2025
32AQI
32AQI
16th 七月 2025
40AQI
40AQI
17th 七月 2025
36AQI
36AQI
18th 七月 2025
18AQI
18AQI
19th 七月 2025
27AQI
27AQI
20th 七月 2025
23AQI
23AQI
21st 七月 2025
26AQI
26AQI
22nd 七月 2025
15AQI
15AQI
23rd 七月 2025
24AQI
24AQI
24th 七月 2025
34AQI
34AQI
25th 七月 2025
49AQI
49AQI
26th 七月 2025
111AQI
111AQI
27th 七月 2025
77AQI
77AQI
28th 七月 2025
59AQI
59AQI
29th 七月 2025
58AQI
58AQI
30th 七月 2025
48AQI
48AQI
31st 七月 2025
70AQI
70AQI
1st 八月 2025
49AQI
49AQI
2nd 八月 2025
25AQI
25AQI
3rd 八月 2025
54AQI
54AQI
4th 八月 2025
82AQI
82AQI
5th 八月 2025
72AQI
72AQI
6th 八月 2025
50AQI
50AQI
7th 八月 2025
64AQI
64AQI
8th 八月 2025
34AQI
34AQI
9th 八月 2025
31AQI
31AQI
10th 八月 2025
34AQI
34AQI
11th 八月 2025
49AQI
49AQI
12th 八月 2025
62AQI
62AQI
13th 八月 2025
61AQI
61AQI
14th 八月 2025
48AQI
48AQI
15th 八月 2025
34AQI
34AQI
16th 八月 2025
32AQI
32AQI
17th 八月 2025
38AQI
38AQI
18th 八月 2025
18AQI
18AQI
19th 八月 2025
17AQI
17AQI
20th 八月 2025
19AQI
19AQI
21st 八月 2025
17AQI
17AQI
22nd 八月 2025
23rd 八月 2025
24th 八月 2025
25th 八月 2025
26th 八月 2025
27th 八月 2025
28th 八月 2025
29th 八月 2025
30th 八月 2025
31st 八月 2025
1st 九月 2025
2nd 九月 2025
3rd 九月 2025
4th 九月 2025
5th 九月 2025
6th 九月 2025
7th 九月 2025
8th 九月 2025
9th 九月 2025
10th 九月 2025
11th 九月 2025
12th 九月 2025
13th 九月 2025
14th 九月 2025
15th 九月 2025
16th 九月 2025
17th 九月 2025
18th 九月 2025
19th 九月 2025
20th 九月 2025
21st 九月 2025
22nd 九月 2025
23rd 九月 2025
24th 九月 2025
25th 九月 2025
26th 九月 2025
27th 九月 2025
28th 九月 2025
29th 九月 2025
30th 九月 2025
1st 十月 2025
2nd 十月 2025
3rd 十月 2025
4th 十月 2025
5th 十月 2025
6th 十月 2025
7th 十月 2025
8th 十月 2025
9th 十月 2025
10th 十月 2025
11th 十月 2025
12th 十月 2025
13th 十月 2025
14th 十月 2025
15th 十月 2025
16th 十月 2025
17th 十月 2025
18th 十月 2025
19th 十月 2025
20th 十月 2025
21st 十月 2025
22nd 十月 2025
23rd 十月 2025
24th 十月 2025
25th 十月 2025
26th 十月 2025
27th 十月 2025
28th 十月 2025
29th 十月 2025
30th 十月 2025
31st 十月 2025
1st 十一月 2025
2nd 十一月 2025
3rd 十一月 2025
4th 十一月 2025
5th 十一月 2025
6th 十一月 2025
7th 十一月 2025
8th 十一月 2025
9th 十一月 2025
10th 十一月 2025
11th 十一月 2025
12th 十一月 2025
13th 十一月 2025
14th 十一月 2025
15th 十一月 2025
16th 十一月 2025
17th 十一月 2025
18th 十一月 2025
19th 十一月 2025
20th 十一月 2025
21st 十一月 2025
22nd 十一月 2025
23rd 十一月 2025
24th 十一月 2025
25th 十一月 2025
26th 十一月 2025
27th 十一月 2025
28th 十一月 2025
29th 十一月 2025
30th 十一月 2025
1st 十二月 2025
2nd 十二月 2025
3rd 十二月 2025
4th 十二月 2025
5th 十二月 2025
6th 十二月 2025
7th 十二月 2025
8th 十二月 2025
9th 十二月 2025
10th 十二月 2025
11th 十二月 2025
12th 十二月 2025
13th 十二月 2025
14th 十二月 2025
15th 十二月 2025
16th 十二月 2025
17th 十二月 2025
18th 十二月 2025
19th 十二月 2025
20th 十二月 2025
21st 十二月 2025
22nd 十二月 2025
23rd 十二月 2025
24th 十二月 2025
25th 十二月 2025
26th 十二月 2025
27th 十二月 2025
28th 十二月 2025
29th 十二月 2025
30th 十二月 2025
31st 十二月 2025
28AQI
27AQI
23AQI
21AQI
21AQI
39AQI
39AQI
42AQI
天数
一月二月三月四月五月六月七月八月九月十月十一月十二月总天数
202530AQI
31
28
31
30
31
22
8
25
5
1
15
6
213
19
1
最高AQI记录于
八月42AQI
最低AQI记录于
四月21AQI
202424AQI
31
29
31
30
31
29
1
29
2
26
5
30
31
30
29
2
356
10
最高AQI记录于
七月31AQI
最低AQI记录于
三月17AQI
202326AQI
31
28
31
30
31
26
4
24
7
27
4
22
8
30
1
28
1
31
339
25
最高AQI记录于
七月38AQI
最低AQI记录于
一月19AQI
202222AQI
29
1
21
31
30
31
30
24
1
1
29
31
30
25
2
312
4
最高AQI记录于
七月30AQI
最低AQI记录于
八月14AQI
202123AQI
29
1
28
31
28
20
29
1
28
3
28
3
30
31
30
31
343
8
最高AQI记录于
六月29AQI
最低AQI记录于
九月18AQI
202030AQI
13
21
18
22
8
28
3
31
30
3
13
29
2
208
13
最高AQI记录于
六月41AQI
最低AQI记录于
九月19AQI
过去6年中污染最重与最轻的年份
污染最重的记录年份
2025(平均)
30AQI污染最轻的记录年份
2022(平均)
22AQIPortland的年度2025 AQI（30）相比之前几年的平均百分比变化为21.1% (恶化 AQI)：2020 (30), 2021 (23), 2022 (22), 2023 (26), 2024 (24)。
