Foster Powell, Portland, Oregon, 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
Foster Powell, Portland, Oregon, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2025
38AQILowest AQI recorded on
2nd Aug 2025
17AQISame Day Analysis (10th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 27 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
Foster Powell, Portland, Oregon, United States
AQI
Day
Night
.
5 AM10th Aug 2025
8 PM
4 AM11th Aug 2025
Day time
Avg. Highest Time
5PM10th Aug
34AQI
Avg. Lowest Time
10AM10th Aug
22AQI
Night time
Avg. Highest Time
9PM10th Aug
30AQI
Avg. Lowest Time
1AM11th Aug
23AQI
In the last 24 hours,
Foster Powell's AQI reached its highest point of 34 at 5 PM during the Day, while the lowest point, 22, was recorded at 10 AM during the Day between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Foster Powell, Portland, Oregon, 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 2025195 AMAQI
12th Jul 2025166 AMAQI
12th Jul 2025167 AMAQI
12th Jul 2025188 AMAQI
12th Jul 2025189 AMAQI
12th Jul 20251710 AMAQI
12th Jul 20251811 AMAQI
12th Jul 20251712 PMAQI
12th Jul 2025181 PMAQI
12th Jul 2025172 PMAQI
12th Jul 2025203 PMAQI
12th Jul 2025214 PMAQI
12th Jul 2025205 PMAQI
12th Jul 2025186 PMAQI
12th Jul 2025187 PMAQI
12th Jul 2025198 PMAQI
12th Jul 2025209 PMAQI
12th Jul 20251910 PMAQI
12th Jul 20252011 PMAQI
13th Jul 20252112 AMAQI
13th Jul 2025221 AMAQI
13th Jul 2025252 AMAQI
13th Jul 2025223 AMAQI
13th Jul 2025264 AMAQI
24°C18/33°C
13th Jul 2025255 AMAQI
13th Jul 2025256 AMAQI
13th Jul 2025217 AMAQI
13th Jul 2025218 AMAQI
13th Jul 2025209 AMAQI
13th Jul 20251910 AMAQI
13th Jul 20252111 AMAQI
13th Jul 20252512 PMAQI
13th Jul 2025271 PMAQI
13th Jul 2025262 PMAQI
13th Jul 2025243 PMAQI
13th Jul 2025244 PMAQI
13th Jul 2025245 PMAQI
13th Jul 2025246 PMAQI
13th Jul 2025247 PMAQI
13th Jul 2025238 PMAQI
13th Jul 2025199 PMAQI
13th Jul 20252010 PMAQI
13th Jul 20252011 PMAQI
14th Jul 20251912 AMAQI
14th Jul 2025171 AMAQI
14th Jul 2025152 AMAQI
14th Jul 2025153 AMAQI
14th Jul 2025154 AMAQI
27°C19/36°C
14th Jul 2025145 AMAQI
14th Jul 2025156 AMAQI
14th Jul 2025167 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025169 AMAQI
14th Jul 20251410 AMAQI
14th Jul 20251411 AMAQI
14th Jul 20251512 PMAQI
14th Jul 2025211 PMAQI
14th Jul 2025202 PMAQI
14th Jul 2025143 PMAQI
14th Jul 2025154 PMAQI
14th Jul 2025155 PMAQI
14th Jul 2025156 PMAQI
14th Jul 2025167 PMAQI
14th Jul 2025188 PMAQI
14th Jul 2025209 PMAQI
14th Jul 20251810 PMAQI
14th Jul 20252011 PMAQI
15th Jul 20252212 AMAQI
15th Jul 2025221 AMAQI
15th Jul 2025202 AMAQI
15th Jul 2025203 AMAQI
15th Jul 2025204 AMAQI
21°C16/29°C
15th Jul 2025185 AMAQI
15th Jul 2025226 AMAQI
15th Jul 2025217 AMAQI
15th Jul 2025208 AMAQI
15th Jul 2025169 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20252311 AMAQI
15th Jul 20252912 PMAQI
15th Jul 2025311 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025223 PMAQI
15th Jul 2025254 PMAQI
15th Jul 2025275 PMAQI
15th Jul 2025266 PMAQI
15th Jul 2025247 PMAQI
15th Jul 2025258 PMAQI
15th Jul 2025289 PMAQI
15th Jul 20252910 PMAQI
15th Jul 20252811 PMAQI
16th Jul 20252612 AMAQI
16th Jul 2025221 AMAQI
16th Jul 2025222 AMAQI
16th Jul 2025243 AMAQI
16th Jul 2025264 AMAQI
24°C15/35°C
16th Jul 2025265 AMAQI
16th Jul 2025306 AMAQI
16th Jul 2025267 AMAQI
16th Jul 2025258 AMAQI
16th Jul 2025219 AMAQI
16th Jul 20251910 AMAQI
16th Jul 20252611 AMAQI
16th Jul 20253212 PMAQI
16th Jul 2025311 PMAQI
16th Jul 2025312 PMAQI
16th Jul 2025303 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025285 PMAQI
16th Jul 2025286 PMAQI
16th Jul 2025287 PMAQI
16th Jul 2025268 PMAQI
16th Jul 2025269 PMAQI
16th Jul 20252610 PMAQI
16th Jul 20252811 PMAQI
17th Jul 20252612 AMAQI
17th Jul 2025251 AMAQI
17th Jul 2025252 AMAQI
17th Jul 2025303 AMAQI
17th Jul 2025404 AMAQI
29°C22/37°C
17th Jul 2025435 AMAQI
17th Jul 2025426 AMAQI
17th Jul 2025407 AMAQI
17th Jul 2025398 AMAQI
17th Jul 2025389 AMAQI
17th Jul 20253210 AMAQI
17th Jul 20253411 AMAQI
17th Jul 20253512 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025412 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025396 PMAQI
17th Jul 2025377 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025349 PMAQI
17th Jul 20253210 PMAQI
17th Jul 20253011 PMAQI
18th Jul 20252812 AMAQI
18th Jul 2025321 AMAQI
18th Jul 2025342 AMAQI
18th Jul 2025373 AMAQI
18th Jul 2025334 AMAQI
24°C16/32°C
18th Jul 2025375 AMAQI
18th Jul 2025406 AMAQI
18th Jul 2025367 AMAQI
18th Jul 2025448 AMAQI
18th Jul 2025409 AMAQI
18th Jul 20253310 AMAQI
18th Jul 20253411 AMAQI
18th Jul 20254212 PMAQI
18th Jul 2025441 PMAQI
18th Jul 2025422 PMAQI
18th Jul 2025363 PMAQI
18th Jul 2025364 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025376 PMAQI
18th Jul 2025367 PMAQI
18th Jul 2025368 PMAQI
18th Jul 2025309 PMAQI
18th Jul 20253110 PMAQI
18th Jul 20253111 PMAQI
19th Jul 20252912 AMAQI
19th Jul 2025281 AMAQI
19th Jul 2025272 AMAQI
19th Jul 2025253 AMAQI
19th Jul 2025154 AMAQI
22°C17/29°C
19th Jul 2025245 AMAQI
19th Jul 2025176 AMAQI
19th Jul 2025207 AMAQI
19th Jul 2025238 AMAQI
19th Jul 2025199 AMAQI
19th Jul 20251910 AMAQI
19th Jul 20252111 AMAQI
19th Jul 20251912 PMAQI
19th Jul 2025261 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025266 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025238 PMAQI
19th Jul 2025279 PMAQI
19th Jul 20252410 PMAQI
19th Jul 20252511 PMAQI
20th Jul 20252412 AMAQI
20th Jul 2025241 AMAQI
20th Jul 2025222 AMAQI
20th Jul 2025233 AMAQI
20th Jul 2025234 AMAQI
19°C15/25°C
20th Jul 2025195 AMAQI
20th Jul 2025166 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025238 AMAQI
20th Jul 2025219 AMAQI
20th Jul 20251810 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20251712 PMAQI
20th Jul 2025191 PMAQI
20th Jul 2025222 PMAQI
20th Jul 2025263 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025227 PMAQI
20th Jul 2025228 PMAQI
20th Jul 2025229 PMAQI
20th Jul 20252210 PMAQI
20th Jul 20252211 PMAQI
21st Jul 20252312 AMAQI
21st Jul 2025251 AMAQI
21st Jul 2025262 AMAQI
21st Jul 2025243 AMAQI
21st Jul 2025304 AMAQI
18°C14/22°C
21st Jul 2025215 AMAQI
21st Jul 2025186 AMAQI
21st Jul 2025207 AMAQI
21st Jul 2025218 AMAQI
21st Jul 2025199 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20252011 AMAQI
21st Jul 20252012 PMAQI
21st Jul 2025181 PMAQI
21st Jul 2025222 PMAQI
21st Jul 2025223 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025246 PMAQI
21st Jul 2025257 PMAQI
21st Jul 2025248 PMAQI
21st Jul 2025249 PMAQI
21st Jul 20252410 PMAQI
21st Jul 20252411 PMAQI
22nd Jul 20252412 AMAQI
22nd Jul 2025251 AMAQI
22nd Jul 2025232 AMAQI
22nd Jul 2025213 AMAQI
22nd Jul 2025184 AMAQI
20°C16/23°C
22nd Jul 2025205 AMAQI
22nd Jul 2025246 AMAQI
22nd Jul 2025257 AMAQI
22nd Jul 2025268 AMAQI
22nd Jul 2025279 AMAQI
22nd Jul 20252710 AMAQI
22nd Jul 20252811 AMAQI
22nd Jul 20252612 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025252 PMAQI
22nd Jul 2025253 PMAQI
22nd Jul 2025284 PMAQI
22nd Jul 2025265 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025247 PMAQI
22nd Jul 2025248 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252610 PMAQI
22nd Jul 20252411 PMAQI
23rd Jul 20252012 AMAQI
23rd Jul 2025201 AMAQI
23rd Jul 2025212 AMAQI
23rd Jul 2025203 AMAQI
23rd Jul 2025184 AMAQI
22°C15/30°C
23rd Jul 2025255 AMAQI
23rd Jul 2025136 AMAQI
23rd Jul 2025137 AMAQI
23rd Jul 2025168 AMAQI
23rd Jul 2025179 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252512 PMAQI
23rd Jul 2025291 PMAQI
23rd Jul 2025252 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025295 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025237 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252211 PMAQI
24th Jul 20251712 AMAQI
24th Jul 2025201 AMAQI
24th Jul 2025212 AMAQI
24th Jul 2025193 AMAQI
24th Jul 2025154 AMAQI
24°C17/34°C
24th Jul 2025165 AMAQI
24th Jul 2025206 AMAQI
24th Jul 2025207 AMAQI
24th Jul 2025178 AMAQI
24th Jul 2025159 AMAQI
24th Jul 20251410 AMAQI
24th Jul 20251611 AMAQI
24th Jul 20251812 PMAQI
24th Jul 2025231 PMAQI
24th Jul 2025252 PMAQI
24th Jul 2025233 PMAQI
24th Jul 2025244 PMAQI
24th Jul 2025265 PMAQI
24th Jul 2025306 PMAQI
24th Jul 2025247 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025279 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252211 PMAQI
25th Jul 20251912 AMAQI
25th Jul 2025191 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025173 AMAQI
25th Jul 2025254 AMAQI
23°C17/31°C
25th Jul 2025265 AMAQI
25th Jul 2025226 AMAQI
25th Jul 2025227 AMAQI
25th Jul 2025198 AMAQI
25th Jul 2025179 AMAQI
25th Jul 20251610 AMAQI
25th Jul 20251811 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025171 PMAQI
25th Jul 2025222 PMAQI
25th Jul 2025203 PMAQI
25th Jul 2025194 PMAQI
25th Jul 2025205 PMAQI
25th Jul 2025216 PMAQI
25th Jul 2025197 PMAQI
25th Jul 2025218 PMAQI
25th Jul 2025229 PMAQI
25th Jul 20252310 PMAQI
25th Jul 20252211 PMAQI
26th Jul 20251912 AMAQI
26th Jul 2025171 AMAQI
26th Jul 2025172 AMAQI
26th Jul 2025173 AMAQI
26th Jul 2025164 AMAQI
19°C15/24°C
26th Jul 2025165 AMAQI
26th Jul 2025206 AMAQI
26th Jul 2025167 AMAQI
26th Jul 2025158 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251410 AMAQI
26th Jul 20251411 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025161 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025183 PMAQI
26th Jul 2025204 PMAQI
26th Jul 2025205 PMAQI
26th Jul 2025186 PMAQI
26th Jul 2025187 PMAQI
26th Jul 2025198 PMAQI
26th Jul 2025229 PMAQI
26th Jul 20251910 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252012 AMAQI
27th Jul 2025181 AMAQI
27th Jul 2025202 AMAQI
27th Jul 2025193 AMAQI
27th Jul 2025224 AMAQI
17°C14/21°C
27th Jul 2025265 AMAQI
27th Jul 2025266 AMAQI
27th Jul 2025247 AMAQI
27th Jul 2025198 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20251810 AMAQI
27th Jul 20251911 AMAQI
27th Jul 20252412 PMAQI
27th Jul 2025331 PMAQI
27th Jul 2025322 PMAQI
27th Jul 2025273 PMAQI
27th Jul 2025294 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025236 PMAQI
27th Jul 2025247 PMAQI
27th Jul 2025238 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252210 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252112 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025242 AMAQI
28th Jul 2025203 AMAQI
28th Jul 2025174 AMAQI
20°C15/28°C
28th Jul 2025225 AMAQI
28th Jul 2025226 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025198 AMAQI
28th Jul 2025209 AMAQI
28th Jul 20251810 AMAQI
28th Jul 20252011 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025271 PMAQI
28th Jul 2025302 PMAQI
28th Jul 2025263 PMAQI
28th Jul 2025274 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025236 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252510 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20251912 AMAQI
29th Jul 2025211 AMAQI
29th Jul 2025202 AMAQI
29th Jul 2025173 AMAQI
29th Jul 2025164 AMAQI
22°C15/31°C
29th Jul 2025165 AMAQI
29th Jul 2025206 AMAQI
29th Jul 2025177 AMAQI
29th Jul 2025178 AMAQI
29th Jul 2025179 AMAQI
29th Jul 20251710 AMAQI
29th Jul 20251811 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025191 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025203 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025225 PMAQI
29th Jul 2025236 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025208 PMAQI
29th Jul 2025229 PMAQI
29th Jul 20252210 PMAQI
29th Jul 20252311 PMAQI
30th Jul 20252312 AMAQI
30th Jul 2025241 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025243 AMAQI
30th Jul 2025204 AMAQI
25°C17/35°C
30th Jul 2025215 AMAQI
30th Jul 2025226 AMAQI
30th Jul 2025257 AMAQI
30th Jul 2025198 AMAQI
30th Jul 2025199 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20251711 AMAQI
30th Jul 20251812 PMAQI
30th Jul 2025221 PMAQI
30th Jul 2025302 PMAQI
30th Jul 2025303 PMAQI
30th Jul 2025304 PMAQI
30th Jul 2025305 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025308 PMAQI
30th Jul 2025299 PMAQI
30th Jul 20252810 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252312 AMAQI
31st Jul 2025221 AMAQI
31st Jul 2025212 AMAQI
31st Jul 2025213 AMAQI
31st Jul 2025204 AMAQI
24°C18/32°C
31st Jul 2025175 AMAQI
31st Jul 2025186 AMAQI
31st Jul 2025227 AMAQI
31st Jul 2025228 AMAQI
31st Jul 2025199 AMAQI
31st Jul 20252210 AMAQI
31st Jul 20252711 AMAQI
31st Jul 20253012 PMAQI
31st Jul 2025301 PMAQI
31st Jul 2025252 PMAQI
31st Jul 2025223 PMAQI
31st Jul 2025234 PMAQI
31st Jul 2025225 PMAQI
31st Jul 2025206 PMAQI
31st Jul 2025257 PMAQI
31st Jul 2025258 PMAQI
31st Jul 2025219 PMAQI
31st Jul 20252110 PMAQI
31st Jul 20252211 PMAQI
1st Aug 20251912 AMAQI
1st Aug 2025181 AMAQI
1st Aug 2025182 AMAQI
1st Aug 2025213 AMAQI
1st Aug 2025204 AMAQI
22°C17/30°C
1st Aug 2025185 AMAQI
1st Aug 2025186 AMAQI
1st Aug 2025177 AMAQI
1st Aug 2025168 AMAQI
1st Aug 2025149 AMAQI
1st Aug 20251510 AMAQI
1st Aug 20251611 AMAQI
1st Aug 20251612 PMAQI
1st Aug 2025171 PMAQI
1st Aug 2025182 PMAQI
1st Aug 2025203 PMAQI
1st Aug 2025204 PMAQI
1st Aug 2025205 PMAQI
1st Aug 2025196 PMAQI
1st Aug 2025187 PMAQI
1st Aug 2025188 PMAQI
1st Aug 2025189 PMAQI
1st Aug 20251810 PMAQI
1st Aug 20251911 PMAQI
2nd Aug 20252012 AMAQI
2nd Aug 2025181 AMAQI
2nd Aug 2025172 AMAQI
2nd Aug 2025183 AMAQI
2nd Aug 2025184 AMAQI
22°C17/30°C
2nd Aug 2025175 AMAQI
2nd Aug 2025166 AMAQI
2nd Aug 2025187 AMAQI
2nd Aug 2025168 AMAQI
2nd Aug 2025159 AMAQI
2nd Aug 20251510 AMAQI
2nd Aug 20251511 AMAQI
2nd Aug 20251412 PMAQI
2nd Aug 2025151 PMAQI
2nd Aug 2025142 PMAQI
2nd Aug 2025143 PMAQI
2nd Aug 2025144 PMAQI
2nd Aug 2025155 PMAQI
2nd Aug 2025146 PMAQI
2nd Aug 2025177 PMAQI
2nd Aug 2025178 PMAQI
2nd Aug 2025179 PMAQI
2nd Aug 20251810 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252412 AMAQI
3rd Aug 2025261 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025243 AMAQI
3rd Aug 2025254 AMAQI
19°C17/22°C
3rd Aug 2025235 AMAQI
3rd Aug 2025226 AMAQI
3rd Aug 2025217 AMAQI
3rd Aug 2025208 AMAQI
3rd Aug 2025189 AMAQI
3rd Aug 20251710 AMAQI
3rd Aug 20251711 AMAQI
3rd Aug 20251612 PMAQI
3rd Aug 2025161 PMAQI
3rd Aug 2025172 PMAQI
3rd Aug 2025163 PMAQI
3rd Aug 2025184 PMAQI
3rd Aug 2025225 PMAQI
3rd Aug 2025226 PMAQI
3rd Aug 2025217 PMAQI
3rd Aug 2025258 PMAQI
3rd Aug 2025279 PMAQI
3rd Aug 20252310 PMAQI
3rd Aug 20252411 PMAQI
4th Aug 20252312 AMAQI
4th Aug 2025241 AMAQI
4th Aug 2025262 AMAQI
4th Aug 2025243 AMAQI
4th Aug 2025224 AMAQI
18°C15/22°C
4th Aug 2025215 AMAQI
4th Aug 2025206 AMAQI
4th Aug 2025217 AMAQI
4th Aug 2025228 AMAQI
4th Aug 2025229 AMAQI
4th Aug 20252010 AMAQI
4th Aug 20252011 AMAQI
4th Aug 20252012 PMAQI
4th Aug 2025251 PMAQI
4th Aug 2025232 PMAQI
4th Aug 2025223 PMAQI
4th Aug 2025254 PMAQI
4th Aug 2025265 PMAQI
4th Aug 2025326 PMAQI
4th Aug 2025207 PMAQI
4th Aug 2025308 PMAQI
4th Aug 2025399 PMAQI
4th Aug 20254410 PMAQI
4th Aug 20255011 PMAQI
5th Aug 20254912 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025412 AMAQI
5th Aug 2025383 AMAQI
5th Aug 2025384 AMAQI
19°C16/24°C
5th Aug 2025385 AMAQI
5th Aug 2025386 AMAQI
5th Aug 2025347 AMAQI
5th Aug 2025288 AMAQI
5th Aug 2025299 AMAQI
5th Aug 20253410 AMAQI
5th Aug 20253411 AMAQI
5th Aug 20253412 PMAQI
5th Aug 2025381 PMAQI
5th Aug 2025402 PMAQI
5th Aug 2025453 PMAQI
5th Aug 2025474 PMAQI
5th Aug 2025465 PMAQI
5th Aug 2025446 PMAQI
5th Aug 2025407 PMAQI
5th Aug 2025398 PMAQI
5th Aug 2025339 PMAQI
5th Aug 20253110 PMAQI
5th Aug 20253211 PMAQI
6th Aug 20253012 AMAQI
6th Aug 2025251 AMAQI
6th Aug 2025222 AMAQI
6th Aug 2025213 AMAQI
6th Aug 2025214 AMAQI
21°C15/29°C
6th Aug 2025235 AMAQI
6th Aug 2025206 AMAQI
6th Aug 2025187 AMAQI
6th Aug 2025208 AMAQI
6th Aug 2025229 AMAQI
6th Aug 20252010 AMAQI
6th Aug 20252011 AMAQI
6th Aug 20252212 PMAQI
6th Aug 2025241 PMAQI
6th Aug 2025182 PMAQI
6th Aug 2025203 PMAQI
6th Aug 2025184 PMAQI
6th Aug 2025185 PMAQI
6th Aug 2025166 PMAQI
6th Aug 2025227 PMAQI
6th Aug 2025208 PMAQI
6th Aug 2025179 PMAQI
6th Aug 20251610 PMAQI
6th Aug 20252011 PMAQI
7th Aug 20251812 AMAQI
7th Aug 2025211 AMAQI
7th Aug 2025182 AMAQI
7th Aug 2025183 AMAQI
7th Aug 2025144 AMAQI
20°C16/24°C
7th Aug 2025185 AMAQI
7th Aug 2025236 AMAQI
7th Aug 2025187 AMAQI
7th Aug 2025188 AMAQI
7th Aug 2025209 AMAQI
7th Aug 20251610 AMAQI
7th Aug 20251711 AMAQI
7th Aug 20251512 PMAQI
7th Aug 2025171 PMAQI
7th Aug 2025182 PMAQI
7th Aug 2025163 PMAQI
7th Aug 2025174 PMAQI
7th Aug 2025175 PMAQI
7th Aug 2025186 PMAQI
7th Aug 2025167 PMAQI
7th Aug 2025178 PMAQI
7th Aug 2025189 PMAQI
7th Aug 20251910 PMAQI
7th Aug 20252011 PMAQI
8th Aug 20251812 AMAQI
8th Aug 2025191 AMAQI
8th Aug 2025202 AMAQI
8th Aug 2025203 AMAQI
8th Aug 2025184 AMAQI
20°C16/24°C
8th Aug 2025155 AMAQI
8th Aug 2025176 AMAQI
8th Aug 2025187 AMAQI
8th Aug 2025168 AMAQI
8th Aug 2025189 AMAQI
8th Aug 20251810 AMAQI
8th Aug 20251911 AMAQI
8th Aug 20252312 PMAQI
8th Aug 2025221 PMAQI
8th Aug 2025242 PMAQI
8th Aug 2025223 PMAQI
8th Aug 2025234 PMAQI
8th Aug 2025235 PMAQI
8th Aug 2025216 PMAQI
8th Aug 2025217 PMAQI
8th Aug 2025198 PMAQI
8th Aug 2025189 PMAQI
8th Aug 20252110 PMAQI
8th Aug 20252211 PMAQI
9th Aug 20252012 AMAQI
9th Aug 2025211 AMAQI
9th Aug 2025212 AMAQI
9th Aug 2025223 AMAQI
9th Aug 2025204 AMAQI
21°C15/29°C
9th Aug 2025225 AMAQI
9th Aug 2025186 AMAQI
9th Aug 2025227 AMAQI
9th Aug 2025188 AMAQI
9th Aug 2025249 AMAQI
9th Aug 20251610 AMAQI
9th Aug 20252011 AMAQI
9th Aug 20252512 PMAQI
9th Aug 2025221 PMAQI
9th Aug 2025242 PMAQI
9th Aug 2025233 PMAQI
9th Aug 2025224 PMAQI
9th Aug 2025225 PMAQI
9th Aug 2025256 PMAQI
9th Aug 2025237 PMAQI
9th Aug 2025238 PMAQI
9th Aug 2025259 PMAQI
9th Aug 20252410 PMAQI
9th Aug 20252411 PMAQI
10th Aug 20252312 AMAQI
10th Aug 2025251 AMAQI
10th Aug 2025262 AMAQI
10th Aug 2025273 AMAQI
10th Aug 2025264 AMAQI
23°C16/32°C
10th Aug 2025245 AMAQI
10th Aug 2025316 AMAQI
10th Aug 2025277 AMAQI
10th Aug 2025248 AMAQI
10th Aug 2025239 AMAQI
10th Aug 20252210 AMAQI
10th Aug 20252811 AMAQI
10th Aug 20253012 PMAQI
10th Aug 2025301 PMAQI
10th Aug 2025332 PMAQI
10th Aug 2025323 PMAQI
10th Aug 2025334 PMAQI
10th Aug 2025345 PMAQI
10th Aug 2025346 PMAQI
10th Aug 2025297 PMAQI
10th Aug 2025288 PMAQI
10th Aug 2025309 PMAQI
10th Aug 20252810 PMAQI
10th Aug 20252711 PMAQI
11th Aug 20252412 AMAQI
11th Aug 2025231 AMAQI
11th Aug 2025252 AMAQI
11th Aug 2025283 AMAQI
11th Aug 2025264 AMAQI
28°C19/39°C
11th Aug 2025245 AMAQI
5 AM11th Aug 2025266 AMAQI
11th Aug 2025257 AMAQI
11th Aug 2025268 AMAQI
11th Aug 2025249 AMAQI
12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
1 PM - 8 PM
25AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
5 AM - 11 AM
21AQI
7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 8 PM (Avg. 25), while the lowest AQI was between 5 AM to 11 AM (Avg. 21).
Night time
Avg. Highest Time
9 PM - 11 PM
24AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
12 AM - 4 AM
23AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 24), while the lowest AQI was between 12 AM to 4 AM (Avg. 23).
2025 Days Vs Air Quality
Foster Powell, Portland, Oregon, United States
2025
100%
138
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
138 DaysModerate
0 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% 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
Foster Powell, Portland, Oregon, 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 March 2025
18AQI
18AQI
2nd March 2025
17AQI
17AQI
3rd March 2025
18AQI
18AQI
4th March 2025
17AQI
17AQI
5th March 2025
19AQI
19AQI
6th March 2025
17AQI
17AQI
1st April 2025
19AQI
19AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
20AQI
20AQI
4th April 2025
23AQI
23AQI
5th April 2025
19AQI
19AQI
6th April 2025
26AQI
26AQI
7th April 2025
16AQI
16AQI
8th April 2025
17AQI
17AQI
9th April 2025
15AQI
15AQI
10th April 2025
19AQI
19AQI
11th April 2025
16AQI
16AQI
12th April 2025
16AQI
16AQI
13th April 2025
17AQI
17AQI
14th April 2025
17AQI
17AQI
15th April 2025
17AQI
17AQI
16th April 2025
19AQI
19AQI
17th April 2025
17AQI
17AQI
18th April 2025
20AQI
20AQI
19th April 2025
20AQI
20AQI
20th April 2025
18AQI
18AQI
21st April 2025
17AQI
17AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
23AQI
23AQI
24th April 2025
29AQI
29AQI
25th April 2025
38AQI
38AQI
26th April 2025
29AQI
29AQI
27th April 2025
25AQI
25AQI
28th April 2025
15AQI
15AQI
29th April 2025
18AQI
18AQI
30th April 2025
20AQI
20AQI
1st May 2025
30AQI
30AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
16AQI
16AQI
4th May 2025
17AQI
17AQI
5th May 2025
20AQI
20AQI
6th May 2025
23AQI
23AQI
7th May 2025
24AQI
24AQI
8th May 2025
18AQI
18AQI
9th May 2025
28AQI
28AQI
10th May 2025
29AQI
29AQI
11th May 2025
16AQI
16AQI
12th May 2025
20AQI
20AQI
13th May 2025
17AQI
17AQI
14th May 2025
23AQI
23AQI
15th May 2025
19AQI
19AQI
16th May 2025
20AQI
20AQI
17th May 2025
18AQI
18AQI
18th May 2025
16AQI
16AQI
19th May 2025
18AQI
18AQI
20th May 2025
11AQI
11AQI
21st May 2025
15AQI
15AQI
22nd May 2025
24AQI
24AQI
23rd May 2025
19AQI
19AQI
24th May 2025
18AQI
18AQI
25th May 2025
19AQI
19AQI
26th May 2025
17AQI
17AQI
27th May 2025
20AQI
20AQI
28th May 2025
25AQI
25AQI
29th May 2025
16AQI
16AQI
30th May 2025
19AQI
19AQI
31st May 2025
22AQI
22AQI
1st June 2025
19AQI
19AQI
2nd June 2025
23AQI
23AQI
3rd June 2025
27AQI
27AQI
4th June 2025
16AQI
16AQI
5th June 2025
17AQI
17AQI
6th June 2025
20AQI
20AQI
7th June 2025
22AQI
22AQI
8th June 2025
37AQI
37AQI
9th June 2025
36AQI
36AQI
10th June 2025
38AQI
38AQI
11th June 2025
40AQI
40AQI
12th June 2025
34AQI
34AQI
13th June 2025
22AQI
22AQI
14th June 2025
21AQI
21AQI
15th June 2025
23AQI
23AQI
16th June 2025
25AQI
25AQI
17th June 2025
23AQI
23AQI
18th June 2025
16AQI
16AQI
19th June 2025
16AQI
16AQI
20th June 2025
18AQI
18AQI
21st June 2025
19AQI
19AQI
22nd June 2025
18AQI
18AQI
23rd June 2025
22AQI
22AQI
24th June 2025
29AQI
29AQI
25th June 2025
27AQI
27AQI
26th June 2025
19AQI
19AQI
27th June 2025
16AQI
16AQI
28th June 2025
17AQI
17AQI
29th June 2025
19AQI
19AQI
30th June 2025
25AQI
25AQI
1st July 2025
21AQI
21AQI
2nd July 2025
15AQI
15AQI
3rd July 2025
15AQI
15AQI
4th July 2025
17AQI
17AQI
5th July 2025
22AQI
22AQI
6th July 2025
18AQI
18AQI
7th July 2025
19AQI
19AQI
8th July 2025
22AQI
22AQI
9th July 2025
17AQI
17AQI
10th July 2025
15AQI
15AQI
11th July 2025
20AQI
20AQI
12th July 2025
19AQI
19AQI
13th July 2025
23AQI
23AQI
14th July 2025
17AQI
17AQI
15th July 2025
24AQI
24AQI
16th July 2025
26AQI
26AQI
17th July 2025
35AQI
35AQI
18th July 2025
36AQI
36AQI
19th July 2025
24AQI
24AQI
20th July 2025
22AQI
22AQI
21st July 2025
23AQI
23AQI
22nd July 2025
24AQI
24AQI
23rd July 2025
22AQI
22AQI
24th July 2025
21AQI
21AQI
25th July 2025
20AQI
20AQI
26th July 2025
18AQI
18AQI
27th July 2025
23AQI
23AQI
28th July 2025
23AQI
23AQI
29th July 2025
20AQI
20AQI
30th July 2025
25AQI
25AQI
31st July 2025
22AQI
22AQI
1st August 2025
18AQI
18AQI
2nd August 2025
17AQI
17AQI
3rd August 2025
22AQI
22AQI
4th August 2025
27AQI
27AQI
5th August 2025
38AQI
38AQI
6th August 2025
21AQI
21AQI
7th August 2025
18AQI
18AQI
8th August 2025
20AQI
20AQI
9th August 2025
22AQI
22AQI
10th August 2025
27AQI
27AQI
18AQI
20AQI
20AQI
23AQI
22AQI
23AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202521AQI
6
30
31
30
31
10
138
Highest AQI recorded in
June23AQI
Lowest AQI recorded in
March18AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
21AQILeast Polluted Year Recorded
2025(Avg.)
21AQIFoster Powell's annual 2025 AQI (21) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
