Hermiston, 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
Hermiston, Oregon, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Aug 2023
250AQILowest AQI recorded on
10th Aug 2023
13AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 26 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Hermiston, Oregon, United States
AQI
Day
Night
.
5 AM3rd Aug 2025
8 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
7PM3rd Aug
25AQI
Avg. Lowest Time
3PM3rd Aug
18AQI
Night time
Avg. Highest Time
2AM4th Aug
29AQI
Avg. Lowest Time
9PM3rd Aug
20AQI
In the last 24 hours,
Hermiston's AQI reached its highest point of 29 at 2 AM during the Night, while the lowest point, 18, was recorded at 3 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hermiston, Oregon, 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 2025185 AMAQI
5th Jul 2025206 AMAQI
5th Jul 2025217 AMAQI
5th Jul 2025208 AMAQI
5th Jul 2025199 AMAQI
5th Jul 20252010 AMAQI
5th Jul 20251811 AMAQI
5th Jul 20251812 PMAQI
5th Jul 2025181 PMAQI
5th Jul 2025202 PMAQI
5th Jul 2025223 PMAQI
5th Jul 2025214 PMAQI
5th Jul 2025215 PMAQI
5th Jul 2025206 PMAQI
5th Jul 2025197 PMAQI
5th Jul 2025188 PMAQI
5th Jul 2025199 PMAQI
5th Jul 20252010 PMAQI
5th Jul 20252011 PMAQI
6th Jul 20252012 AMAQI
6th Jul 2025221 AMAQI
6th Jul 2025272 AMAQI
6th Jul 2025263 AMAQI
6th Jul 2025194 AMAQI
22°C13/31°C
6th Jul 2025205 AMAQI
6th Jul 2025196 AMAQI
6th Jul 2025217 AMAQI
6th Jul 2025228 AMAQI
6th Jul 2025219 AMAQI
6th Jul 20252010 AMAQI
6th Jul 20252011 AMAQI
6th Jul 20251912 PMAQI
6th Jul 2025181 PMAQI
6th Jul 2025212 PMAQI
6th Jul 2025213 PMAQI
6th Jul 2025214 PMAQI
6th Jul 2025215 PMAQI
6th Jul 2025216 PMAQI
6th Jul 2025217 PMAQI
6th Jul 2025228 PMAQI
6th Jul 2025219 PMAQI
6th Jul 20252110 PMAQI
6th Jul 20252011 PMAQI
7th Jul 20252112 AMAQI
7th Jul 2025241 AMAQI
7th Jul 2025222 AMAQI
7th Jul 2025233 AMAQI
7th Jul 2025224 AMAQI
24°C12/34°C
7th Jul 2025205 AMAQI
7th Jul 2025216 AMAQI
7th Jul 2025227 AMAQI
7th Jul 2025228 AMAQI
7th Jul 2025229 AMAQI
7th Jul 20252310 AMAQI
7th Jul 20252411 AMAQI
7th Jul 20252312 PMAQI
7th Jul 2025231 PMAQI
7th Jul 2025242 PMAQI
7th Jul 2025233 PMAQI
7th Jul 2025244 PMAQI
7th Jul 2025235 PMAQI
7th Jul 2025246 PMAQI
7th Jul 2025227 PMAQI
7th Jul 2025238 PMAQI
7th Jul 2025229 PMAQI
7th Jul 20252310 PMAQI
7th Jul 20252311 PMAQI
8th Jul 20252312 AMAQI
8th Jul 2025241 AMAQI
8th Jul 2025252 AMAQI
8th Jul 2025263 AMAQI
8th Jul 2025264 AMAQI
27°C15/38°C
8th Jul 2025265 AMAQI
8th Jul 2025316 AMAQI
8th Jul 2025277 AMAQI
8th Jul 2025278 AMAQI
8th Jul 2025289 AMAQI
8th Jul 20253010 AMAQI
8th Jul 20253011 AMAQI
8th Jul 20252912 PMAQI
8th Jul 2025261 PMAQI
8th Jul 2025282 PMAQI
8th Jul 2025253 PMAQI
8th Jul 2025254 PMAQI
8th Jul 2025245 PMAQI
8th Jul 2025246 PMAQI
8th Jul 2025267 PMAQI
8th Jul 2025268 PMAQI
8th Jul 2025269 PMAQI
8th Jul 20252410 PMAQI
8th Jul 20252411 PMAQI
9th Jul 20252512 AMAQI
9th Jul 2025231 AMAQI
9th Jul 2025242 AMAQI
9th Jul 2025223 AMAQI
9th Jul 2025164 AMAQI
29°C18/40°C
9th Jul 2025145 AMAQI
9th Jul 2025166 AMAQI
9th Jul 2025167 AMAQI
9th Jul 2025178 AMAQI
9th Jul 2025179 AMAQI
9th Jul 20251610 AMAQI
9th Jul 20251611 AMAQI
9th Jul 20251612 PMAQI
9th Jul 2025161 PMAQI
9th Jul 2025162 PMAQI
9th Jul 2025163 PMAQI
9th Jul 2025184 PMAQI
9th Jul 2025185 PMAQI
9th Jul 2025186 PMAQI
9th Jul 2025187 PMAQI
9th Jul 2025188 PMAQI
9th Jul 2025199 PMAQI
9th Jul 20251910 PMAQI
9th Jul 20251611 PMAQI
10th Jul 20251612 AMAQI
10th Jul 2025161 AMAQI
10th Jul 2025162 AMAQI
10th Jul 2025153 AMAQI
10th Jul 2025144 AMAQI
26°C18/36°C
10th Jul 2025135 AMAQI
10th Jul 2025136 AMAQI
10th Jul 2025147 AMAQI
10th Jul 2025148 AMAQI
10th Jul 2025149 AMAQI
10th Jul 20251410 AMAQI
10th Jul 20251411 AMAQI
10th Jul 20251412 PMAQI
10th Jul 2025141 PMAQI
10th Jul 2025132 PMAQI
10th Jul 2025153 PMAQI
10th Jul 2025164 PMAQI
10th Jul 2025155 PMAQI
10th Jul 2025146 PMAQI
10th Jul 2025157 PMAQI
10th Jul 2025168 PMAQI
10th Jul 2025149 PMAQI
10th Jul 20251410 PMAQI
10th Jul 20251611 PMAQI
11th Jul 20251612 AMAQI
11th Jul 2025161 AMAQI
11th Jul 2025162 AMAQI
11th Jul 2025153 AMAQI
11th Jul 2025164 AMAQI
24°C16/34°C
11th Jul 2025165 AMAQI
11th Jul 2025156 AMAQI
11th Jul 2025167 AMAQI
11th Jul 2025168 AMAQI
11th Jul 2025189 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20251911 AMAQI
11th Jul 20251812 PMAQI
11th Jul 2025181 PMAQI
11th Jul 2025182 PMAQI
11th Jul 2025193 PMAQI
11th Jul 2025184 PMAQI
11th Jul 2025185 PMAQI
11th Jul 2025196 PMAQI
11th Jul 2025187 PMAQI
11th Jul 2025198 PMAQI
11th Jul 2025199 PMAQI
11th Jul 20252010 PMAQI
11th Jul 20252011 PMAQI
12th Jul 20252012 AMAQI
12th Jul 2025231 AMAQI
12th Jul 2025242 AMAQI
12th Jul 2025223 AMAQI
12th Jul 2025224 AMAQI
25°C14/36°C
12th Jul 2025235 AMAQI
12th Jul 2025256 AMAQI
12th Jul 2025247 AMAQI
12th Jul 2025308 AMAQI
12th Jul 2025249 AMAQI
12th Jul 20252410 AMAQI
12th Jul 20252311 AMAQI
12th Jul 20252512 PMAQI
12th Jul 2025221 PMAQI
12th Jul 2025212 PMAQI
12th Jul 2025223 PMAQI
12th Jul 2025224 PMAQI
12th Jul 2025215 PMAQI
12th Jul 2025216 PMAQI
12th Jul 2025227 PMAQI
12th Jul 2025218 PMAQI
12th Jul 2025209 PMAQI
12th Jul 20252010 PMAQI
12th Jul 20252111 PMAQI
13th Jul 20252212 AMAQI
13th Jul 2025221 AMAQI
13th Jul 2025222 AMAQI
13th Jul 2025233 AMAQI
13th Jul 2025204 AMAQI
28°C16/38°C
13th Jul 2025195 AMAQI
13th Jul 2025216 AMAQI
13th Jul 2025227 AMAQI
13th Jul 2025248 AMAQI
13th Jul 2025239 AMAQI
13th Jul 20252210 AMAQI
13th Jul 20252311 AMAQI
13th Jul 20252412 PMAQI
13th Jul 2025251 PMAQI
13th Jul 2025242 PMAQI
13th Jul 2025233 PMAQI
13th Jul 2025224 PMAQI
13th Jul 2025225 PMAQI
13th Jul 2025206 PMAQI
13th Jul 2025207 PMAQI
13th Jul 2025218 PMAQI
13th Jul 2025209 PMAQI
13th Jul 20252010 PMAQI
13th Jul 20252111 PMAQI
14th Jul 20252112 AMAQI
14th Jul 2025221 AMAQI
14th Jul 2025242 AMAQI
14th Jul 2025253 AMAQI
14th Jul 2025224 AMAQI
30°C19/41°C
14th Jul 2025235 AMAQI
14th Jul 2025206 AMAQI
14th Jul 2025207 AMAQI
14th Jul 2025228 AMAQI
14th Jul 2025219 AMAQI
14th Jul 20252210 AMAQI
14th Jul 20252411 AMAQI
14th Jul 20252212 PMAQI
14th Jul 2025221 PMAQI
14th Jul 2025212 PMAQI
14th Jul 2025203 PMAQI
14th Jul 2025204 PMAQI
14th Jul 2025195 PMAQI
14th Jul 2025186 PMAQI
14th Jul 2025217 PMAQI
14th Jul 2025218 PMAQI
14th Jul 2025179 PMAQI
14th Jul 20251810 PMAQI
14th Jul 20251811 PMAQI
15th Jul 20251812 AMAQI
15th Jul 2025221 AMAQI
15th Jul 2025252 AMAQI
15th Jul 2025243 AMAQI
15th Jul 2025214 AMAQI
29°C21/38°C
15th Jul 2025205 AMAQI
15th Jul 2025166 AMAQI
15th Jul 2025177 AMAQI
15th Jul 2025178 AMAQI
15th Jul 2025219 AMAQI
15th Jul 20252010 AMAQI
15th Jul 20252211 AMAQI
15th Jul 20251612 PMAQI
15th Jul 2025161 PMAQI
15th Jul 2025162 PMAQI
15th Jul 2025183 PMAQI
15th Jul 2025184 PMAQI
15th Jul 2025185 PMAQI
15th Jul 2025186 PMAQI
15th Jul 2025197 PMAQI
15th Jul 2025218 PMAQI
15th Jul 2025209 PMAQI
15th Jul 20252010 PMAQI
15th Jul 20252111 PMAQI
16th Jul 20252212 AMAQI
16th Jul 2025241 AMAQI
16th Jul 2025242 AMAQI
16th Jul 2025253 AMAQI
16th Jul 2025304 AMAQI
24°C14/34°C
16th Jul 2025315 AMAQI
16th Jul 2025306 AMAQI
16th Jul 2025317 AMAQI
16th Jul 2025338 AMAQI
16th Jul 2025339 AMAQI
16th Jul 20253210 AMAQI
16th Jul 20253211 AMAQI
16th Jul 20253312 PMAQI
16th Jul 2025321 PMAQI
16th Jul 2025322 PMAQI
16th Jul 2025323 PMAQI
16th Jul 2025324 PMAQI
16th Jul 2025335 PMAQI
16th Jul 2025336 PMAQI
16th Jul 2025337 PMAQI
16th Jul 2025338 PMAQI
16th Jul 2025349 PMAQI
16th Jul 20253510 PMAQI
16th Jul 20253311 PMAQI
17th Jul 20253412 AMAQI
17th Jul 2025351 AMAQI
17th Jul 2025372 AMAQI
17th Jul 2025393 AMAQI
17th Jul 2025444 AMAQI
24°C12/34°C
17th Jul 2025405 AMAQI
17th Jul 2025366 AMAQI
17th Jul 2025367 AMAQI
17th Jul 2025388 AMAQI
17th Jul 2025419 AMAQI
17th Jul 20253810 AMAQI
17th Jul 20254111 AMAQI
17th Jul 20253912 PMAQI
17th Jul 2025431 PMAQI
17th Jul 2025372 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025316 PMAQI
17th Jul 2025367 PMAQI
17th Jul 2025358 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20252910 PMAQI
17th Jul 20253211 PMAQI
18th Jul 20253512 AMAQI
18th Jul 2025341 AMAQI
18th Jul 2025332 AMAQI
18th Jul 2025313 AMAQI
18th Jul 2025204 AMAQI
27°C15/37°C
18th Jul 2025205 AMAQI
18th Jul 2025216 AMAQI
18th Jul 2025247 AMAQI
18th Jul 2025258 AMAQI
18th Jul 2025259 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025281 PMAQI
18th Jul 2025302 PMAQI
18th Jul 2025343 PMAQI
18th Jul 2025364 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025306 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025268 PMAQI
18th Jul 2025299 PMAQI
18th Jul 20253010 PMAQI
18th Jul 20253011 PMAQI
19th Jul 20253412 AMAQI
19th Jul 2025321 AMAQI
19th Jul 2025382 AMAQI
19th Jul 2025323 AMAQI
19th Jul 2025324 AMAQI
26°C16/37°C
19th Jul 2025465 AMAQI
19th Jul 2025326 AMAQI
19th Jul 2025297 AMAQI
19th Jul 2025278 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252810 AMAQI
19th Jul 20253311 AMAQI
19th Jul 20253812 PMAQI
19th Jul 2025361 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025253 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025256 PMAQI
19th Jul 2025317 PMAQI
19th Jul 2025388 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253811 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025371 AMAQI
20th Jul 2025362 AMAQI
20th Jul 2025423 AMAQI
20th Jul 2025404 AMAQI
24°C16/33°C
20th Jul 2025415 AMAQI
20th Jul 2025396 AMAQI
20th Jul 2025387 AMAQI
20th Jul 2025368 AMAQI
20th Jul 2025389 AMAQI
20th Jul 20253810 AMAQI
20th Jul 20253611 AMAQI
20th Jul 20253612 PMAQI
20th Jul 2025361 PMAQI
20th Jul 2025362 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025354 PMAQI
20th Jul 2025365 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025398 PMAQI
20th Jul 2025369 PMAQI
20th Jul 20253610 PMAQI
20th Jul 20253811 PMAQI
21st Jul 20253612 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025403 AMAQI
21st Jul 2025384 AMAQI
22°C13/30°C
21st Jul 2025385 AMAQI
21st Jul 2025366 AMAQI
21st Jul 2025357 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025419 AMAQI
21st Jul 20253910 AMAQI
21st Jul 20253811 AMAQI
21st Jul 20254412 PMAQI
21st Jul 2025441 PMAQI
21st Jul 2025402 PMAQI
21st Jul 2025403 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025395 PMAQI
21st Jul 2025396 PMAQI
21st Jul 2025397 PMAQI
21st Jul 2025398 PMAQI
21st Jul 2025399 PMAQI
21st Jul 20253910 PMAQI
21st Jul 20253811 PMAQI
22nd Jul 20253812 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025352 AMAQI
22nd Jul 2025353 AMAQI
22nd Jul 2025344 AMAQI
22°C17/30°C
22nd Jul 2025355 AMAQI
22nd Jul 2025366 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025358 AMAQI
22nd Jul 2025389 AMAQI
22nd Jul 20253710 AMAQI
22nd Jul 20253911 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025371 PMAQI
22nd Jul 2025362 PMAQI
22nd Jul 2025363 PMAQI
22nd Jul 2025384 PMAQI
22nd Jul 2025375 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025377 PMAQI
22nd Jul 2025368 PMAQI
22nd Jul 2025369 PMAQI
22nd Jul 20253410 PMAQI
22nd Jul 20253511 PMAQI
23rd Jul 20253512 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025362 AMAQI
23rd Jul 2025363 AMAQI
23rd Jul 2025354 AMAQI
24°C15/33°C
23rd Jul 2025355 AMAQI
23rd Jul 2025356 AMAQI
23rd Jul 2025377 AMAQI
23rd Jul 2025388 AMAQI
23rd Jul 2025369 AMAQI
23rd Jul 20253410 AMAQI
23rd Jul 20253611 AMAQI
23rd Jul 20253612 PMAQI
23rd Jul 2025361 PMAQI
23rd Jul 2025372 PMAQI
23rd Jul 2025373 PMAQI
23rd Jul 2025364 PMAQI
23rd Jul 2025365 PMAQI
23rd Jul 2025346 PMAQI
23rd Jul 2025347 PMAQI
23rd Jul 2025328 PMAQI
23rd Jul 2025309 PMAQI
23rd Jul 20253010 PMAQI
23rd Jul 20253211 PMAQI
24th Jul 20253212 AMAQI
24th Jul 2025321 AMAQI
24th Jul 2025342 AMAQI
24th Jul 2025323 AMAQI
24th Jul 2025304 AMAQI
27°C16/37°C
24th Jul 2025305 AMAQI
24th Jul 2025296 AMAQI
24th Jul 2025317 AMAQI
24th Jul 2025298 AMAQI
24th Jul 2025309 AMAQI
24th Jul 20253210 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20253512 PMAQI
24th Jul 2025321 PMAQI
24th Jul 2025302 PMAQI
24th Jul 2025283 PMAQI
24th Jul 2025264 PMAQI
24th Jul 2025275 PMAQI
24th Jul 2025276 PMAQI
24th Jul 2025317 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025259 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252111 PMAQI
25th Jul 20252612 AMAQI
25th Jul 2025241 AMAQI
25th Jul 2025242 AMAQI
25th Jul 2025223 AMAQI
25th Jul 2025144 AMAQI
27°C17/37°C
25th Jul 2025175 AMAQI
25th Jul 2025186 AMAQI
25th Jul 2025187 AMAQI
25th Jul 2025208 AMAQI
25th Jul 2025199 AMAQI
25th Jul 20251710 AMAQI
25th Jul 20251611 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025161 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025173 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025175 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025178 PMAQI
25th Jul 2025169 PMAQI
25th Jul 20251610 PMAQI
25th Jul 20251611 PMAQI
26th Jul 20251712 AMAQI
26th Jul 2025161 AMAQI
26th Jul 2025162 AMAQI
26th Jul 2025163 AMAQI
26th Jul 2025134 AMAQI
25°C18/35°C
26th Jul 2025135 AMAQI
26th Jul 2025136 AMAQI
26th Jul 2025137 AMAQI
26th Jul 2025148 AMAQI
26th Jul 2025149 AMAQI
26th Jul 20251610 AMAQI
26th Jul 20251611 AMAQI
26th Jul 20251612 PMAQI
26th Jul 2025161 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025163 PMAQI
26th Jul 2025154 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025166 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025168 PMAQI
26th Jul 2025159 PMAQI
26th Jul 20251410 PMAQI
26th Jul 20251511 PMAQI
27th Jul 20251512 AMAQI
27th Jul 2025161 AMAQI
27th Jul 2025152 AMAQI
27th Jul 2025153 AMAQI
27th Jul 2025144 AMAQI
24°C15/34°C
27th Jul 2025155 AMAQI
27th Jul 2025156 AMAQI
27th Jul 2025167 AMAQI
27th Jul 2025168 AMAQI
27th Jul 2025169 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251512 PMAQI
27th Jul 2025161 PMAQI
27th Jul 2025162 PMAQI
27th Jul 2025163 PMAQI
27th Jul 2025164 PMAQI
27th Jul 2025165 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025168 PMAQI
27th Jul 2025169 PMAQI
27th Jul 20251510 PMAQI
27th Jul 20251611 PMAQI
28th Jul 20251612 AMAQI
28th Jul 2025171 AMAQI
28th Jul 2025162 AMAQI
28th Jul 2025163 AMAQI
28th Jul 2025164 AMAQI
24°C15/34°C
28th Jul 2025155 AMAQI
28th Jul 2025166 AMAQI
28th Jul 2025187 AMAQI
28th Jul 2025178 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20251810 AMAQI
28th Jul 20252011 AMAQI
28th Jul 20252312 PMAQI
28th Jul 2025201 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025193 PMAQI
28th Jul 2025194 PMAQI
28th Jul 2025185 PMAQI
28th Jul 2025186 PMAQI
28th Jul 2025197 PMAQI
28th Jul 2025198 PMAQI
28th Jul 2025199 PMAQI
28th Jul 20251810 PMAQI
28th Jul 20251811 PMAQI
29th Jul 20251912 AMAQI
29th Jul 2025221 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025193 AMAQI
29th Jul 2025184 AMAQI
26°C16/37°C
29th Jul 2025175 AMAQI
29th Jul 2025186 AMAQI
29th Jul 2025197 AMAQI
29th Jul 2025218 AMAQI
29th Jul 2025239 AMAQI
29th Jul 20252110 AMAQI
29th Jul 20252111 AMAQI
29th Jul 20252212 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025213 PMAQI
29th Jul 2025204 PMAQI
29th Jul 2025215 PMAQI
29th Jul 2025226 PMAQI
29th Jul 2025217 PMAQI
29th Jul 2025238 PMAQI
29th Jul 2025229 PMAQI
29th Jul 20252110 PMAQI
29th Jul 20252111 PMAQI
30th Jul 20252212 AMAQI
30th Jul 2025221 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025253 AMAQI
30th Jul 2025264 AMAQI
28°C16/40°C
30th Jul 2025255 AMAQI
30th Jul 2025286 AMAQI
30th Jul 2025307 AMAQI
30th Jul 2025298 AMAQI
30th Jul 2025299 AMAQI
30th Jul 20252810 AMAQI
30th Jul 20253011 AMAQI
30th Jul 20253212 PMAQI
30th Jul 2025321 PMAQI
30th Jul 2025342 PMAQI
30th Jul 2025343 PMAQI
30th Jul 2025344 PMAQI
30th Jul 2025345 PMAQI
30th Jul 2025346 PMAQI
30th Jul 2025347 PMAQI
30th Jul 2025348 PMAQI
30th Jul 2025319 PMAQI
30th Jul 20253010 PMAQI
30th Jul 20253111 PMAQI
31st Jul 20253012 AMAQI
31st Jul 2025301 AMAQI
31st Jul 2025322 AMAQI
31st Jul 2025303 AMAQI
31st Jul 2025264 AMAQI
28°C18/39°C
31st Jul 2025265 AMAQI
31st Jul 2025316 AMAQI
31st Jul 2025327 AMAQI
31st Jul 2025348 AMAQI
31st Jul 2025329 AMAQI
31st Jul 20254010 AMAQI
31st Jul 20253711 AMAQI
31st Jul 20253812 PMAQI
31st Jul 2025391 PMAQI
31st Jul 2025332 PMAQI
31st Jul 2025313 PMAQI
31st Jul 2025324 PMAQI
31st Jul 2025325 PMAQI
31st Jul 2025316 PMAQI
31st Jul 2025327 PMAQI
31st Jul 2025318 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20252710 PMAQI
31st Jul 20252811 PMAQI
1st Aug 20253012 AMAQI
1st Aug 2025341 AMAQI
1st Aug 2025342 AMAQI
1st Aug 2025373 AMAQI
1st Aug 2025364 AMAQI
28°C19/38°C
1st Aug 2025335 AMAQI
1st Aug 2025376 AMAQI
1st Aug 2025387 AMAQI
1st Aug 2025408 AMAQI
1st Aug 2025439 AMAQI
1st Aug 20254510 AMAQI
1st Aug 20254711 AMAQI
1st Aug 20254212 PMAQI
1st Aug 2025381 PMAQI
1st Aug 2025422 PMAQI
1st Aug 2025523 PMAQI
1st Aug 2025614 PMAQI
1st Aug 2025615 PMAQI
1st Aug 2025566 PMAQI
1st Aug 2025437 PMAQI
1st Aug 2025488 PMAQI
1st Aug 2025489 PMAQI
1st Aug 20253810 PMAQI
1st Aug 20254611 PMAQI
2nd Aug 20255412 AMAQI
2nd Aug 2025531 AMAQI
2nd Aug 2025502 AMAQI
2nd Aug 2025513 AMAQI
2nd Aug 2025484 AMAQI
25°C20/33°C
2nd Aug 2025445 AMAQI
2nd Aug 2025436 AMAQI
2nd Aug 2025407 AMAQI
2nd Aug 2025448 AMAQI
2nd Aug 2025489 AMAQI
2nd Aug 20255010 AMAQI
2nd Aug 20254711 AMAQI
2nd Aug 20255012 PMAQI
2nd Aug 2025541 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025523 PMAQI
2nd Aug 2025524 PMAQI
2nd Aug 2025545 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025467 PMAQI
2nd Aug 2025478 PMAQI
2nd Aug 2025559 PMAQI
2nd Aug 20255410 PMAQI
2nd Aug 20255411 PMAQI
3rd Aug 20254812 AMAQI
3rd Aug 2025371 AMAQI
3rd Aug 2025282 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025274 AMAQI
26°C17/36°C
3rd Aug 2025225 AMAQI
3rd Aug 2025216 AMAQI
3rd Aug 2025197 AMAQI
3rd Aug 2025198 AMAQI
3rd Aug 2025209 AMAQI
3rd Aug 20251810 AMAQI
3rd Aug 20251911 AMAQI
3rd Aug 20251812 PMAQI
3rd Aug 2025191 PMAQI
3rd Aug 2025192 PMAQI
3rd Aug 2025183 PMAQI
3rd Aug 2025204 PMAQI
3rd Aug 2025215 PMAQI
3rd Aug 2025196 PMAQI
3rd Aug 2025257 PMAQI
3rd Aug 2025228 PMAQI
3rd Aug 2025209 PMAQI
3rd Aug 20252110 PMAQI
3rd Aug 20252211 PMAQI
4th Aug 20252412 AMAQI
4th Aug 2025251 AMAQI
4th Aug 2025292 AMAQI
4th Aug 2025283 AMAQI
4th Aug 2025244 AMAQI
24°C17/34°C
4th Aug 2025235 AMAQI
5 AM12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
27AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
27AQI
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. 27), while the lowest AQI was between 5 AM to 8 PM (Avg. 27).
Night time
Avg. Highest Time
12 AM - 3 AM
27AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 11 PM
26AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 27), while the lowest AQI was between 4 AM to 11 PM (Avg. 26).
2025 Days Vs Air Quality
Hermiston, Oregon, United States
2025
96%
206
4%
9
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
206 DaysModerate
9 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 216 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
Hermiston, 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 January 2025
37AQI
37AQI
2nd January 2025
33AQI
33AQI
3rd January 2025
22AQI
22AQI
4th January 2025
22AQI
22AQI
5th January 2025
34AQI
34AQI
6th January 2025
21AQI
21AQI
7th January 2025
27AQI
27AQI
8th January 2025
34AQI
34AQI
9th January 2025
32AQI
32AQI
10th January 2025
29AQI
29AQI
11th January 2025
18AQI
18AQI
12th January 2025
21AQI
21AQI
13th January 2025
28AQI
28AQI
14th January 2025
42AQI
42AQI
15th January 2025
50AQI
50AQI
16th January 2025
37AQI
37AQI
17th January 2025
39AQI
39AQI
18th January 2025
28AQI
28AQI
19th January 2025
31AQI
31AQI
20th January 2025
31AQI
31AQI
21st January 2025
45AQI
45AQI
22nd January 2025
55AQI
55AQI
23rd January 2025
58AQI
58AQI
24th January 2025
51AQI
51AQI
25th January 2025
37AQI
37AQI
26th January 2025
37AQI
37AQI
27th January 2025
39AQI
39AQI
28th January 2025
47AQI
47AQI
29th January 2025
55AQI
55AQI
30th January 2025
66AQI
66AQI
31st January 2025
58AQI
58AQI
1st February 2025
17AQI
17AQI
2nd February 2025
25AQI
25AQI
3rd February 2025
22AQI
22AQI
4th February 2025
23AQI
23AQI
5th February 2025
24AQI
24AQI
6th February 2025
29AQI
29AQI
7th February 2025
25AQI
25AQI
8th February 2025
24AQI
24AQI
9th February 2025
36AQI
36AQI
10th February 2025
25AQI
25AQI
11th February 2025
23AQI
23AQI
12th February 2025
26AQI
26AQI
13th February 2025
24AQI
24AQI
14th February 2025
30AQI
30AQI
15th February 2025
35AQI
35AQI
16th February 2025
57AQI
57AQI
17th February 2025
56AQI
56AQI
18th February 2025
51AQI
51AQI
19th February 2025
28AQI
28AQI
20th February 2025
22AQI
22AQI
21st February 2025
32AQI
32AQI
22nd February 2025
47AQI
47AQI
23rd February 2025
28AQI
28AQI
24th February 2025
19AQI
19AQI
25th February 2025
16AQI
16AQI
26th February 2025
20AQI
20AQI
27th February 2025
24AQI
24AQI
28th February 2025
30AQI
30AQI
1st March 2025
33AQI
33AQI
2nd March 2025
31AQI
31AQI
3rd March 2025
17AQI
17AQI
4th March 2025
18AQI
18AQI
5th March 2025
16AQI
16AQI
6th March 2025
16AQI
16AQI
7th March 2025
18AQI
18AQI
8th March 2025
21AQI
21AQI
9th March 2025
21AQI
21AQI
10th March 2025
18AQI
18AQI
11th March 2025
17AQI
17AQI
12th March 2025
19AQI
19AQI
13th March 2025
16AQI
16AQI
14th March 2025
15AQI
15AQI
15th March 2025
15AQI
15AQI
16th March 2025
14AQI
14AQI
17th March 2025
15AQI
15AQI
18th March 2025
15AQI
15AQI
19th March 2025
29AQI
29AQI
20th March 2025
15AQI
15AQI
21st March 2025
14AQI
14AQI
22nd March 2025
15AQI
15AQI
23rd March 2025
15AQI
15AQI
24th March 2025
15AQI
15AQI
25th March 2025
20AQI
20AQI
26th March 2025
26AQI
26AQI
27th March 2025
18AQI
18AQI
28th March 2025
18AQI
18AQI
29th March 2025
15AQI
15AQI
30th March 2025
17AQI
17AQI
31st March 2025
16AQI
16AQI
1st April 2025
16AQI
16AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
16AQI
16AQI
4th April 2025
19AQI
19AQI
5th April 2025
26AQI
26AQI
6th April 2025
25AQI
25AQI
7th April 2025
19AQI
19AQI
8th April 2025
13AQI
13AQI
9th April 2025
13AQI
13AQI
10th April 2025
18AQI
18AQI
11th April 2025
15AQI
15AQI
12th April 2025
16AQI
16AQI
13th April 2025
17AQI
17AQI
14th April 2025
23AQI
23AQI
15th April 2025
28AQI
28AQI
16th April 2025
28AQI
28AQI
17th April 2025
18AQI
18AQI
18th April 2025
21AQI
21AQI
19th April 2025
18AQI
18AQI
20th April 2025
18AQI
18AQI
21st April 2025
13AQI
13AQI
22nd April 2025
13AQI
13AQI
23rd April 2025
19AQI
19AQI
24th April 2025
27AQI
27AQI
25th April 2025
34AQI
34AQI
26th April 2025
34AQI
34AQI
27th April 2025
24AQI
24AQI
28th April 2025
16AQI
16AQI
29th April 2025
15AQI
15AQI
30th April 2025
18AQI
18AQI
1st May 2025
22AQI
22AQI
2nd May 2025
22AQI
22AQI
3rd May 2025
15AQI
15AQI
4th May 2025
14AQI
14AQI
5th May 2025
15AQI
15AQI
6th May 2025
18AQI
18AQI
7th May 2025
20AQI
20AQI
8th May 2025
15AQI
15AQI
9th May 2025
23AQI
23AQI
10th May 2025
22AQI
22AQI
11th May 2025
15AQI
15AQI
12th May 2025
15AQI
15AQI
13th May 2025
13AQI
13AQI
14th May 2025
17AQI
17AQI
15th May 2025
17AQI
17AQI
16th May 2025
14AQI
14AQI
17th May 2025
14AQI
14AQI
18th May 2025
14AQI
14AQI
19th May 2025
13AQI
13AQI
20th May 2025
12AQI
12AQI
21st May 2025
13AQI
13AQI
22nd May 2025
18AQI
18AQI
23rd May 2025
18AQI
18AQI
24th May 2025
18AQI
18AQI
25th May 2025
20AQI
20AQI
26th May 2025
16AQI
16AQI
27th May 2025
15AQI
15AQI
28th May 2025
21AQI
21AQI
29th May 2025
17AQI
17AQI
30th May 2025
18AQI
18AQI
31st May 2025
24AQI
24AQI
1st June 2025
17AQI
17AQI
2nd June 2025
16AQI
16AQI
3rd June 2025
18AQI
18AQI
4th June 2025
18AQI
18AQI
5th June 2025
18AQI
18AQI
6th June 2025
24AQI
24AQI
7th June 2025
21AQI
21AQI
8th June 2025
25AQI
25AQI
9th June 2025
30AQI
30AQI
10th June 2025
27AQI
27AQI
11th June 2025
29AQI
29AQI
12th June 2025
37AQI
37AQI
13th June 2025
27AQI
27AQI
14th June 2025
21AQI
21AQI
15th June 2025
20AQI
20AQI
16th June 2025
24AQI
24AQI
17th June 2025
22AQI
22AQI
18th June 2025
16AQI
16AQI
19th June 2025
17AQI
17AQI
20th June 2025
19AQI
19AQI
21st June 2025
19AQI
19AQI
22nd June 2025
17AQI
17AQI
23rd June 2025
21AQI
21AQI
24th June 2025
37AQI
37AQI
25th June 2025
37AQI
37AQI
26th June 2025
21AQI
21AQI
27th June 2025
16AQI
16AQI
28th June 2025
13AQI
13AQI
29th June 2025
16AQI
16AQI
30th June 2025
20AQI
20AQI
1st July 2025
25AQI
25AQI
2nd July 2025
22AQI
22AQI
3rd July 2025
18AQI
18AQI
4th July 2025
18AQI
18AQI
5th July 2025
20AQI
20AQI
6th July 2025
21AQI
21AQI
7th July 2025
23AQI
23AQI
8th July 2025
26AQI
26AQI
9th July 2025
18AQI
18AQI
10th July 2025
15AQI
15AQI
11th July 2025
18AQI
18AQI
12th July 2025
22AQI
22AQI
13th July 2025
22AQI
22AQI
14th July 2025
21AQI
21AQI
15th July 2025
20AQI
20AQI
16th July 2025
31AQI
31AQI
17th July 2025
36AQI
36AQI
18th July 2025
28AQI
28AQI
19th July 2025
33AQI
33AQI
20th July 2025
37AQI
37AQI
21st July 2025
39AQI
39AQI
22nd July 2025
36AQI
36AQI
23rd July 2025
34AQI
34AQI
24th July 2025
30AQI
30AQI
25th July 2025
18AQI
18AQI
26th July 2025
15AQI
15AQI
27th July 2025
16AQI
16AQI
28th July 2025
18AQI
18AQI
29th July 2025
21AQI
21AQI
30th July 2025
29AQI
29AQI
31st July 2025
31AQI
31AQI
1st August 2025
42AQI
42AQI
2nd August 2025
50AQI
50AQI
3rd August 2025
26AQI
26AQI
38AQI
29AQI
18AQI
20AQI
17AQI
22AQI
25AQI
39AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202524AQI
25
6
25
3
31
30
31
30
31
3
206
9
Highest AQI recorded in
August39AQI
Lowest AQI recorded in
May17AQI
202424AQI
21
4
28
1
31
30
31
29
27
4
24
7
26
4
31
26
4
29
2
333
26
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
May12AQI
202326AQI
31
25
3
31
27
29
2
30
31
22
6
1
2
30
28
3
19
10
27
4
330
28
1
2
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
April13AQI
202228AQI
23
7
22
31
25
31
30
21
2
21
4
4
14
17
18
12
28
3
266
43
4
Highest AQI recorded in
September48AQI
Lowest AQI recorded in
May13AQI
202126AQI
24
6
24
4
31
30
31
29
1
27
4
20
5
5
1
25
5
31
27
3
31
330
28
5
1
Highest AQI recorded in
August57AQI
Lowest AQI recorded in
May15AQI
202030AQI
18
30
31
30
1
26
2
1
1
27
3
27
3
26
5
215
14
1
1
Highest AQI recorded in
September42AQI
Lowest AQI recorded in
June23AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
30AQILeast Polluted Year Recorded
2024(Avg.)
24AQIHermiston's annual 2025 AQI (24) shows an average percentage change of -9.3% (improved AQI) compared to previous years: 2020 (30), 2021 (26), 2022 (28), 2023 (26), 2024 (24).
