Lewiston, Idaho, 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
Lewiston, Idaho, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
13th Aug 2021
178AQILowest AQI recorded on
31st Aug 2023
18AQISame Day Analysis (8th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 18 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 9th Aug - 10th Aug 2025
Lewiston, Idaho, United States
AQI
Day
Night
.
5 AM9th Aug 2025
8 PM
4 AM10th Aug 2025
Day time
Avg. Highest Time
1PM9th Aug
30AQI
Avg. Lowest Time
7AM9th Aug
16AQI
Night time
Avg. Highest Time
9PM9th Aug
22AQI
Avg. Lowest Time
3AM10th Aug
18AQI
In the last 24 hours,
Lewiston's AQI reached its highest point of 30 at 1 PM during the Day, while the lowest point, 16, was recorded at 7 AM during the Day between 9th Aug and 10th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Lewiston, Idaho, United States
JulAug
11th - 12th12th - 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
Day
Night
11th Jul 2025175 AMAQI
11th Jul 2025156 AMAQI
11th Jul 2025167 AMAQI
11th Jul 2025168 AMAQI
11th Jul 2025179 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20252111 AMAQI
11th Jul 20252512 PMAQI
11th Jul 2025261 PMAQI
11th Jul 2025242 PMAQI
11th Jul 2025233 PMAQI
11th Jul 2025234 PMAQI
11th Jul 2025245 PMAQI
11th Jul 2025216 PMAQI
11th Jul 2025197 PMAQI
11th Jul 2025208 PMAQI
11th Jul 2025219 PMAQI
11th Jul 20252110 PMAQI
11th Jul 20252211 PMAQI
12th Jul 20252512 AMAQI
12th Jul 2025261 AMAQI
12th Jul 2025272 AMAQI
12th Jul 2025263 AMAQI
12th Jul 2025254 AMAQI
24°C15/33°C
12th Jul 2025255 AMAQI
12th Jul 2025246 AMAQI
12th Jul 2025227 AMAQI
12th Jul 2025248 AMAQI
12th Jul 2025239 AMAQI
12th Jul 20252410 AMAQI
12th Jul 20252411 AMAQI
12th Jul 20252512 PMAQI
12th Jul 2025261 PMAQI
12th Jul 2025302 PMAQI
12th Jul 2025273 PMAQI
12th Jul 2025264 PMAQI
12th Jul 2025255 PMAQI
12th Jul 2025256 PMAQI
12th Jul 2025257 PMAQI
12th Jul 2025258 PMAQI
12th Jul 2025239 PMAQI
12th Jul 20252210 PMAQI
12th Jul 20252211 PMAQI
13th Jul 20252212 AMAQI
13th Jul 2025231 AMAQI
13th Jul 2025212 AMAQI
13th Jul 2025213 AMAQI
13th Jul 2025194 AMAQI
25°C15/37°C
13th Jul 2025205 AMAQI
13th Jul 2025196 AMAQI
13th Jul 2025197 AMAQI
13th Jul 2025188 AMAQI
13th Jul 2025189 AMAQI
13th Jul 20251910 AMAQI
13th Jul 20252211 AMAQI
13th Jul 20252612 PMAQI
13th Jul 2025271 PMAQI
13th Jul 2025262 PMAQI
13th Jul 2025233 PMAQI
13th Jul 2025234 PMAQI
13th Jul 2025255 PMAQI
13th Jul 2025246 PMAQI
13th Jul 2025237 PMAQI
13th Jul 2025238 PMAQI
13th Jul 2025269 PMAQI
13th Jul 20252410 PMAQI
13th Jul 20252311 PMAQI
14th Jul 20252212 AMAQI
14th Jul 2025201 AMAQI
14th Jul 2025202 AMAQI
14th Jul 2025213 AMAQI
14th Jul 2025244 AMAQI
28°C15/39°C
14th Jul 2025225 AMAQI
14th Jul 2025206 AMAQI
14th Jul 2025227 AMAQI
14th Jul 2025238 AMAQI
14th Jul 2025249 AMAQI
14th Jul 20252410 AMAQI
14th Jul 20253411 AMAQI
14th Jul 20253412 PMAQI
14th Jul 2025271 PMAQI
14th Jul 2025262 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025254 PMAQI
14th Jul 2025245 PMAQI
14th Jul 2025226 PMAQI
14th Jul 2025247 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025249 PMAQI
14th Jul 20252610 PMAQI
14th Jul 20252711 PMAQI
15th Jul 20252712 AMAQI
15th Jul 2025251 AMAQI
15th Jul 2025262 AMAQI
15th Jul 2025273 AMAQI
15th Jul 2025294 AMAQI
27°C16/38°C
15th Jul 2025255 AMAQI
15th Jul 2025236 AMAQI
15th Jul 2025237 AMAQI
15th Jul 2025248 AMAQI
15th Jul 2025239 AMAQI
15th Jul 20252310 AMAQI
15th Jul 20252311 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025251 PMAQI
15th Jul 2025232 PMAQI
15th Jul 2025243 PMAQI
15th Jul 2025254 PMAQI
15th Jul 2025255 PMAQI
15th Jul 2025256 PMAQI
15th Jul 2025257 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025279 PMAQI
15th Jul 20252710 PMAQI
15th Jul 20252811 PMAQI
16th Jul 20252812 AMAQI
16th Jul 2025291 AMAQI
16th Jul 2025282 AMAQI
16th Jul 2025283 AMAQI
16th Jul 2025274 AMAQI
22°C13/31°C
16th Jul 2025305 AMAQI
16th Jul 2025276 AMAQI
16th Jul 2025277 AMAQI
16th Jul 2025298 AMAQI
16th Jul 2025289 AMAQI
16th Jul 20252910 AMAQI
16th Jul 20253611 AMAQI
16th Jul 20253912 PMAQI
16th Jul 2025401 PMAQI
16th Jul 2025422 PMAQI
16th Jul 2025373 PMAQI
16th Jul 2025384 PMAQI
16th Jul 2025355 PMAQI
16th Jul 2025346 PMAQI
16th Jul 2025337 PMAQI
16th Jul 2025338 PMAQI
16th Jul 2025339 PMAQI
16th Jul 20253310 PMAQI
16th Jul 20253211 PMAQI
17th Jul 20253112 AMAQI
17th Jul 2025331 AMAQI
17th Jul 2025332 AMAQI
17th Jul 2025323 AMAQI
17th Jul 2025354 AMAQI
22°C12/32°C
17th Jul 2025315 AMAQI
17th Jul 2025326 AMAQI
17th Jul 2025357 AMAQI
17th Jul 2025358 AMAQI
17th Jul 2025379 AMAQI
17th Jul 20253610 AMAQI
17th Jul 20254211 AMAQI
17th Jul 20254612 PMAQI
17th Jul 2025461 PMAQI
17th Jul 2025452 PMAQI
17th Jul 2025393 PMAQI
17th Jul 2025394 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025367 PMAQI
17th Jul 2025358 PMAQI
17th Jul 2025339 PMAQI
17th Jul 20253310 PMAQI
17th Jul 20253211 PMAQI
18th Jul 20253012 AMAQI
18th Jul 2025291 AMAQI
18th Jul 2025292 AMAQI
18th Jul 2025283 AMAQI
18th Jul 2025234 AMAQI
25°C13/36°C
18th Jul 2025235 AMAQI
18th Jul 2025246 AMAQI
18th Jul 2025267 AMAQI
18th Jul 2025288 AMAQI
18th Jul 2025279 AMAQI
18th Jul 20252910 AMAQI
18th Jul 20253911 AMAQI
18th Jul 20254012 PMAQI
18th Jul 2025391 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025333 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025345 PMAQI
18th Jul 2025336 PMAQI
18th Jul 2025327 PMAQI
18th Jul 2025318 PMAQI
18th Jul 2025319 PMAQI
18th Jul 20253110 PMAQI
18th Jul 20253111 PMAQI
19th Jul 20253112 AMAQI
19th Jul 2025331 AMAQI
19th Jul 2025322 AMAQI
19th Jul 2025313 AMAQI
19th Jul 2025274 AMAQI
25°C12/37°C
19th Jul 2025305 AMAQI
19th Jul 2025326 AMAQI
19th Jul 2025337 AMAQI
19th Jul 2025338 AMAQI
19th Jul 2025309 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20253011 AMAQI
19th Jul 20253012 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025292 PMAQI
19th Jul 2025303 PMAQI
19th Jul 2025284 PMAQI
19th Jul 2025285 PMAQI
19th Jul 2025266 PMAQI
19th Jul 2025287 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025279 PMAQI
19th Jul 20252610 PMAQI
19th Jul 20252811 PMAQI
20th Jul 20252712 AMAQI
20th Jul 2025281 AMAQI
20th Jul 2025282 AMAQI
20th Jul 2025273 AMAQI
20th Jul 2025234 AMAQI
24°C16/33°C
20th Jul 2025225 AMAQI
20th Jul 2025236 AMAQI
20th Jul 2025237 AMAQI
20th Jul 2025278 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20253311 AMAQI
20th Jul 20254012 PMAQI
20th Jul 2025421 PMAQI
20th Jul 2025412 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025344 PMAQI
20th Jul 2025335 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025277 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025289 PMAQI
20th Jul 20252710 PMAQI
20th Jul 20252711 PMAQI
21st Jul 20252712 AMAQI
21st Jul 2025271 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025283 AMAQI
21st Jul 2025304 AMAQI
21°C14/28°C
21st Jul 2025365 AMAQI
21st Jul 2025326 AMAQI
21st Jul 2025317 AMAQI
21st Jul 2025318 AMAQI
21st Jul 2025299 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20252811 AMAQI
21st Jul 20252812 PMAQI
21st Jul 2025321 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025294 PMAQI
21st Jul 2025315 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025307 PMAQI
21st Jul 2025298 PMAQI
21st Jul 2025309 PMAQI
21st Jul 20252910 PMAQI
21st Jul 20252911 PMAQI
22nd Jul 20252712 AMAQI
22nd Jul 2025261 AMAQI
22nd Jul 2025252 AMAQI
22nd Jul 2025253 AMAQI
22nd Jul 2025244 AMAQI
19°C14/25°C
22nd Jul 2025245 AMAQI
22nd Jul 2025236 AMAQI
22nd Jul 2025247 AMAQI
22nd Jul 2025238 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252510 AMAQI
22nd Jul 20252911 AMAQI
22nd Jul 20253412 PMAQI
22nd Jul 2025341 PMAQI
22nd Jul 2025332 PMAQI
22nd Jul 2025303 PMAQI
22nd Jul 2025304 PMAQI
22nd Jul 2025285 PMAQI
22nd Jul 2025286 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025299 PMAQI
22nd Jul 20252710 PMAQI
22nd Jul 20252811 PMAQI
23rd Jul 20252812 AMAQI
23rd Jul 2025281 AMAQI
23rd Jul 2025302 AMAQI
23rd Jul 2025303 AMAQI
23rd Jul 2025294 AMAQI
18°C9/28°C
23rd Jul 2025275 AMAQI
23rd Jul 2025306 AMAQI
23rd Jul 2025307 AMAQI
23rd Jul 2025308 AMAQI
23rd Jul 2025279 AMAQI
23rd Jul 20252810 AMAQI
23rd Jul 20253411 AMAQI
23rd Jul 20253512 PMAQI
23rd Jul 2025361 PMAQI
23rd Jul 2025342 PMAQI
23rd Jul 2025333 PMAQI
23rd Jul 2025334 PMAQI
23rd Jul 2025325 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025307 PMAQI
23rd Jul 2025298 PMAQI
23rd Jul 2025279 PMAQI
23rd Jul 20252710 PMAQI
23rd Jul 20252811 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025281 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025293 AMAQI
24th Jul 2025284 AMAQI
23°C12/33°C
24th Jul 2025285 AMAQI
24th Jul 2025306 AMAQI
24th Jul 2025307 AMAQI
24th Jul 2025308 AMAQI
24th Jul 2025329 AMAQI
24th Jul 20253310 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20254012 PMAQI
24th Jul 2025401 PMAQI
24th Jul 2025362 PMAQI
24th Jul 2025353 PMAQI
24th Jul 2025344 PMAQI
24th Jul 2025335 PMAQI
24th Jul 2025336 PMAQI
24th Jul 2025317 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025289 PMAQI
24th Jul 20252710 PMAQI
24th Jul 20252611 PMAQI
25th Jul 20252812 AMAQI
25th Jul 2025281 AMAQI
25th Jul 2025302 AMAQI
25th Jul 2025303 AMAQI
25th Jul 2025284 AMAQI
26°C15/36°C
25th Jul 2025285 AMAQI
25th Jul 2025286 AMAQI
25th Jul 2025277 AMAQI
25th Jul 2025278 AMAQI
25th Jul 2025289 AMAQI
25th Jul 20252810 AMAQI
25th Jul 20252911 AMAQI
25th Jul 20253212 PMAQI
25th Jul 2025371 PMAQI
25th Jul 2025342 PMAQI
25th Jul 2025313 PMAQI
25th Jul 2025304 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025286 PMAQI
25th Jul 2025287 PMAQI
25th Jul 2025278 PMAQI
25th Jul 2025269 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20252711 PMAQI
26th Jul 20252812 AMAQI
26th Jul 2025381 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025353 AMAQI
26th Jul 2025354 AMAQI
24°C13/36°C
26th Jul 2025325 AMAQI
26th Jul 2025326 AMAQI
26th Jul 2025347 AMAQI
26th Jul 2025338 AMAQI
26th Jul 2025309 AMAQI
26th Jul 20252910 AMAQI
26th Jul 20252811 AMAQI
26th Jul 20253012 PMAQI
26th Jul 2025301 PMAQI
26th Jul 2025302 PMAQI
26th Jul 2025313 PMAQI
26th Jul 2025314 PMAQI
26th Jul 2025305 PMAQI
26th Jul 2025276 PMAQI
26th Jul 2025297 PMAQI
26th Jul 2025298 PMAQI
26th Jul 2025269 PMAQI
26th Jul 20252610 PMAQI
26th Jul 20252611 PMAQI
27th Jul 20252512 AMAQI
27th Jul 2025231 AMAQI
27th Jul 2025232 AMAQI
27th Jul 2025233 AMAQI
27th Jul 2025224 AMAQI
23°C14/34°C
27th Jul 2025235 AMAQI
27th Jul 2025246 AMAQI
27th Jul 2025247 AMAQI
27th Jul 2025238 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252911 AMAQI
27th Jul 20253212 PMAQI
27th Jul 2025321 PMAQI
27th Jul 2025292 PMAQI
27th Jul 2025283 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025255 PMAQI
27th Jul 2025286 PMAQI
27th Jul 2025257 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252310 PMAQI
27th Jul 20252311 PMAQI
28th Jul 20252312 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025223 AMAQI
28th Jul 2025224 AMAQI
24°C14/34°C
28th Jul 2025205 AMAQI
28th Jul 2025206 AMAQI
28th Jul 2025217 AMAQI
28th Jul 2025218 AMAQI
28th Jul 2025229 AMAQI
28th Jul 20252510 AMAQI
28th Jul 20253111 AMAQI
28th Jul 20253012 PMAQI
28th Jul 2025281 PMAQI
28th Jul 2025282 PMAQI
28th Jul 2025273 PMAQI
28th Jul 2025284 PMAQI
28th Jul 2025285 PMAQI
28th Jul 2025256 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025248 PMAQI
28th Jul 2025269 PMAQI
28th Jul 20252710 PMAQI
28th Jul 20252611 PMAQI
29th Jul 20252412 AMAQI
29th Jul 2025231 AMAQI
29th Jul 2025212 AMAQI
29th Jul 2025203 AMAQI
29th Jul 2025204 AMAQI
26°C17/36°C
29th Jul 2025205 AMAQI
29th Jul 2025206 AMAQI
29th Jul 2025217 AMAQI
29th Jul 2025228 AMAQI
29th Jul 2025229 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20253111 AMAQI
29th Jul 20253812 PMAQI
29th Jul 2025351 PMAQI
29th Jul 2025322 PMAQI
29th Jul 2025293 PMAQI
29th Jul 2025294 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025286 PMAQI
29th Jul 2025277 PMAQI
29th Jul 2025278 PMAQI
29th Jul 2025279 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252512 AMAQI
30th Jul 2025241 AMAQI
30th Jul 2025242 AMAQI
30th Jul 2025233 AMAQI
30th Jul 2025204 AMAQI
28°C15/39°C
30th Jul 2025235 AMAQI
30th Jul 2025226 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025218 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20252510 AMAQI
30th Jul 20253211 AMAQI
30th Jul 20254212 PMAQI
30th Jul 2025411 PMAQI
30th Jul 2025422 PMAQI
30th Jul 2025423 PMAQI
30th Jul 2025424 PMAQI
30th Jul 2025425 PMAQI
30th Jul 2025426 PMAQI
30th Jul 2025427 PMAQI
30th Jul 2025428 PMAQI
30th Jul 2025319 PMAQI
30th Jul 20252610 PMAQI
30th Jul 20252711 PMAQI
31st Jul 20252712 AMAQI
31st Jul 2025251 AMAQI
31st Jul 2025272 AMAQI
31st Jul 2025273 AMAQI
31st Jul 2025304 AMAQI
29°C18/38°C
31st Jul 2025375 AMAQI
31st Jul 2025386 AMAQI
31st Jul 2025397 AMAQI
31st Jul 2025428 AMAQI
31st Jul 2025439 AMAQI
31st Jul 20254810 AMAQI
31st Jul 20255211 AMAQI
31st Jul 20255212 PMAQI
31st Jul 2025531 PMAQI
31st Jul 2025492 PMAQI
31st Jul 2025463 PMAQI
31st Jul 2025474 PMAQI
31st Jul 2025475 PMAQI
31st Jul 2025466 PMAQI
31st Jul 2025397 PMAQI
31st Jul 2025428 PMAQI
31st Jul 2025419 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253611 PMAQI
1st Aug 20253712 AMAQI
1st Aug 2025371 AMAQI
1st Aug 2025332 AMAQI
1st Aug 2025323 AMAQI
1st Aug 2025334 AMAQI
28°C19/39°C
1st Aug 2025325 AMAQI
1st Aug 2025336 AMAQI
1st Aug 2025337 AMAQI
1st Aug 2025338 AMAQI
1st Aug 2025339 AMAQI
1st Aug 20253310 AMAQI
1st Aug 20253611 AMAQI
1st Aug 20254212 PMAQI
1st Aug 2025461 PMAQI
1st Aug 2025472 PMAQI
1st Aug 2025493 PMAQI
1st Aug 2025474 PMAQI
1st Aug 2025475 PMAQI
1st Aug 2025496 PMAQI
1st Aug 2025377 PMAQI
1st Aug 2025408 PMAQI
1st Aug 2025389 PMAQI
1st Aug 20253610 PMAQI
1st Aug 20253911 PMAQI
2nd Aug 20253812 AMAQI
2nd Aug 2025371 AMAQI
2nd Aug 2025332 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025284 AMAQI
23°C15/30°C
2nd Aug 2025305 AMAQI
2nd Aug 2025296 AMAQI
2nd Aug 2025317 AMAQI
2nd Aug 2025308 AMAQI
2nd Aug 2025319 AMAQI
2nd Aug 20253010 AMAQI
2nd Aug 20253411 AMAQI
2nd Aug 20253812 PMAQI
2nd Aug 2025421 PMAQI
2nd Aug 2025442 PMAQI
2nd Aug 2025463 PMAQI
2nd Aug 2025484 PMAQI
2nd Aug 2025495 PMAQI
2nd Aug 2025486 PMAQI
2nd Aug 2025387 PMAQI
2nd Aug 2025388 PMAQI
2nd Aug 2025399 PMAQI
2nd Aug 20253810 PMAQI
2nd Aug 20253411 PMAQI
3rd Aug 20253712 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025342 AMAQI
3rd Aug 2025313 AMAQI
3rd Aug 2025324 AMAQI
24°C13/35°C
3rd Aug 2025305 AMAQI
3rd Aug 2025336 AMAQI
3rd Aug 2025377 AMAQI
3rd Aug 2025368 AMAQI
3rd Aug 2025379 AMAQI
3rd Aug 20253810 AMAQI
3rd Aug 20254311 AMAQI
3rd Aug 20254812 PMAQI
3rd Aug 2025491 PMAQI
3rd Aug 2025412 PMAQI
3rd Aug 2025353 PMAQI
3rd Aug 2025374 PMAQI
3rd Aug 2025415 PMAQI
3rd Aug 2025406 PMAQI
3rd Aug 2025387 PMAQI
3rd Aug 2025378 PMAQI
3rd Aug 2025369 PMAQI
3rd Aug 20253610 PMAQI
3rd Aug 20253711 PMAQI
4th Aug 20253612 AMAQI
4th Aug 2025331 AMAQI
4th Aug 2025352 AMAQI
4th Aug 2025353 AMAQI
4th Aug 2025354 AMAQI
23°C14/32°C
4th Aug 2025345 AMAQI
4th Aug 2025336 AMAQI
4th Aug 2025337 AMAQI
4th Aug 2025348 AMAQI
4th Aug 2025369 AMAQI
4th Aug 20253610 AMAQI
4th Aug 20253911 AMAQI
4th Aug 20254112 PMAQI
4th Aug 2025421 PMAQI
4th Aug 2025432 PMAQI
4th Aug 2025433 PMAQI
4th Aug 2025424 PMAQI
4th Aug 2025395 PMAQI
4th Aug 2025396 PMAQI
4th Aug 2025367 PMAQI
4th Aug 2025368 PMAQI
4th Aug 2025359 PMAQI
4th Aug 20253810 PMAQI
4th Aug 20253611 PMAQI
5th Aug 20253812 AMAQI
5th Aug 2025381 AMAQI
5th Aug 2025362 AMAQI
5th Aug 2025353 AMAQI
5th Aug 2025344 AMAQI
20°C13/28°C
5th Aug 2025325 AMAQI
5th Aug 2025326 AMAQI
5th Aug 2025307 AMAQI
5th Aug 2025318 AMAQI
5th Aug 2025309 AMAQI
5th Aug 20253110 AMAQI
5th Aug 20253511 AMAQI
5th Aug 20253712 PMAQI
5th Aug 2025391 PMAQI
5th Aug 2025402 PMAQI
5th Aug 2025403 PMAQI
5th Aug 2025414 PMAQI
5th Aug 2025365 PMAQI
5th Aug 2025346 PMAQI
5th Aug 2025357 PMAQI
5th Aug 2025338 PMAQI
5th Aug 2025299 PMAQI
5th Aug 20252810 PMAQI
5th Aug 20252911 PMAQI
6th Aug 20253012 AMAQI
6th Aug 2025311 AMAQI
6th Aug 2025302 AMAQI
6th Aug 2025303 AMAQI
6th Aug 2025294 AMAQI
21°C11/32°C
6th Aug 2025295 AMAQI
6th Aug 2025276 AMAQI
6th Aug 2025277 AMAQI
6th Aug 2025268 AMAQI
6th Aug 2025279 AMAQI
6th Aug 20253110 AMAQI
6th Aug 20253411 AMAQI
6th Aug 20253612 PMAQI
6th Aug 2025381 PMAQI
6th Aug 2025382 PMAQI
6th Aug 2025383 PMAQI
6th Aug 2025384 PMAQI
6th Aug 2025395 PMAQI
6th Aug 2025386 PMAQI
6th Aug 2025307 PMAQI
6th Aug 2025328 PMAQI
6th Aug 2025339 PMAQI
6th Aug 20253210 PMAQI
6th Aug 20252911 PMAQI
7th Aug 20252912 AMAQI
7th Aug 2025281 AMAQI
7th Aug 2025302 AMAQI
7th Aug 2025293 AMAQI
7th Aug 2025284 AMAQI
22°C16/29°C
7th Aug 2025265 AMAQI
7th Aug 2025256 AMAQI
7th Aug 2025267 AMAQI
7th Aug 2025288 AMAQI
7th Aug 2025279 AMAQI
7th Aug 20252710 AMAQI
7th Aug 20252711 AMAQI
7th Aug 20252712 PMAQI
7th Aug 2025271 PMAQI
7th Aug 2025292 PMAQI
7th Aug 2025293 PMAQI
7th Aug 2025294 PMAQI
7th Aug 2025275 PMAQI
7th Aug 2025246 PMAQI
7th Aug 2025277 PMAQI
7th Aug 2025278 PMAQI
7th Aug 2025279 PMAQI
7th Aug 20252510 PMAQI
7th Aug 20252411 PMAQI
8th Aug 20252212 AMAQI
8th Aug 2025181 AMAQI
8th Aug 2025182 AMAQI
8th Aug 2025183 AMAQI
8th Aug 2025174 AMAQI
19°C13/26°C
8th Aug 2025175 AMAQI
8th Aug 2025176 AMAQI
8th Aug 2025177 AMAQI
8th Aug 2025178 AMAQI
8th Aug 2025179 AMAQI
8th Aug 20251810 AMAQI
8th Aug 20252211 AMAQI
8th Aug 20252812 PMAQI
8th Aug 2025281 PMAQI
8th Aug 2025292 PMAQI
8th Aug 2025253 PMAQI
8th Aug 2025254 PMAQI
8th Aug 2025215 PMAQI
8th Aug 2025206 PMAQI
8th Aug 2025207 PMAQI
8th Aug 2025228 PMAQI
8th Aug 2025229 PMAQI
8th Aug 20252010 PMAQI
8th Aug 20251911 PMAQI
9th Aug 20251912 AMAQI
9th Aug 2025191 AMAQI
9th Aug 2025182 AMAQI
9th Aug 2025183 AMAQI
9th Aug 2025184 AMAQI
19°C10/29°C
9th Aug 2025165 AMAQI
9th Aug 2025166 AMAQI
9th Aug 2025167 AMAQI
9th Aug 2025178 AMAQI
9th Aug 2025179 AMAQI
9th Aug 20251810 AMAQI
9th Aug 20252011 AMAQI
9th Aug 20252612 PMAQI
9th Aug 2025301 PMAQI
9th Aug 2025272 PMAQI
9th Aug 2025223 PMAQI
9th Aug 2025214 PMAQI
9th Aug 2025215 PMAQI
9th Aug 2025206 PMAQI
9th Aug 2025197 PMAQI
9th Aug 2025208 PMAQI
9th Aug 2025229 PMAQI
9th Aug 20252010 PMAQI
9th Aug 20252011 PMAQI
10th Aug 20251912 AMAQI
10th Aug 2025181 AMAQI
10th Aug 2025192 AMAQI
10th Aug 2025183 AMAQI
10th Aug 2025204 AMAQI
23°C14/33°C
10th Aug 2025215 AMAQI
5 AM12 PM
8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
12 PM - 2 PM
35AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
5 AM - 10 AM
27AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 2 PM (Avg. 35), while the lowest AQI was between 5 AM to 10 AM (Avg. 27).
Night time
Avg. Highest Time
9 PM - 11 PM
28AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
12 AM - 4 AM
27AQI
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. 28), while the lowest AQI was between 12 AM to 4 AM (Avg. 27).
2025 Days Vs Air Quality
Lewiston, Idaho, United States
2025
99%
218
0.9%
2
Total number of days with different AQI categories in last 222 days in 2025 (143 days remaining)
Good
218 DaysModerate
2 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 222 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
Lewiston, Idaho, 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
33AQI
33AQI
2nd January 2025
37AQI
37AQI
3rd January 2025
29AQI
29AQI
4th January 2025
25AQI
25AQI
5th January 2025
24AQI
24AQI
6th January 2025
25AQI
25AQI
7th January 2025
26AQI
26AQI
8th January 2025
30AQI
30AQI
9th January 2025
29AQI
29AQI
10th January 2025
27AQI
27AQI
11th January 2025
21AQI
21AQI
12th January 2025
24AQI
24AQI
13th January 2025
28AQI
28AQI
14th January 2025
33AQI
33AQI
15th January 2025
43AQI
43AQI
16th January 2025
30AQI
30AQI
17th January 2025
26AQI
26AQI
18th January 2025
29AQI
29AQI
19th January 2025
32AQI
32AQI
20th January 2025
29AQI
29AQI
21st January 2025
33AQI
33AQI
22nd January 2025
45AQI
45AQI
23rd January 2025
48AQI
48AQI
24th January 2025
42AQI
42AQI
25th January 2025
39AQI
39AQI
26th January 2025
38AQI
38AQI
27th January 2025
41AQI
41AQI
28th January 2025
47AQI
47AQI
29th January 2025
51AQI
51AQI
30th January 2025
55AQI
55AQI
31st January 2025
40AQI
40AQI
1st February 2025
22AQI
22AQI
2nd February 2025
34AQI
34AQI
3rd February 2025
34AQI
34AQI
4th February 2025
33AQI
33AQI
5th February 2025
25AQI
25AQI
6th February 2025
44AQI
44AQI
7th February 2025
35AQI
35AQI
8th February 2025
31AQI
31AQI
9th February 2025
35AQI
35AQI
10th February 2025
28AQI
28AQI
11th February 2025
31AQI
31AQI
12th February 2025
35AQI
35AQI
13th February 2025
32AQI
32AQI
14th February 2025
30AQI
30AQI
15th February 2025
32AQI
32AQI
16th February 2025
24AQI
24AQI
17th February 2025
36AQI
36AQI
18th February 2025
24AQI
24AQI
19th February 2025
24AQI
24AQI
20th February 2025
29AQI
29AQI
21st February 2025
23AQI
23AQI
22nd February 2025
20AQI
20AQI
23rd February 2025
16AQI
16AQI
24th February 2025
15AQI
15AQI
25th February 2025
16AQI
16AQI
26th February 2025
19AQI
19AQI
27th February 2025
20AQI
20AQI
28th February 2025
20AQI
20AQI
1st March 2025
22AQI
22AQI
2nd March 2025
23AQI
23AQI
3rd March 2025
25AQI
25AQI
4th March 2025
20AQI
20AQI
5th March 2025
19AQI
19AQI
6th March 2025
19AQI
19AQI
7th March 2025
20AQI
20AQI
8th March 2025
22AQI
22AQI
9th March 2025
20AQI
20AQI
10th March 2025
16AQI
16AQI
11th March 2025
18AQI
18AQI
12th March 2025
18AQI
18AQI
13th March 2025
18AQI
18AQI
14th March 2025
19AQI
19AQI
15th March 2025
18AQI
18AQI
16th March 2025
15AQI
15AQI
17th March 2025
17AQI
17AQI
18th March 2025
20AQI
20AQI
19th March 2025
20AQI
20AQI
20th March 2025
18AQI
18AQI
21st March 2025
20AQI
20AQI
22nd March 2025
17AQI
17AQI
23rd March 2025
18AQI
18AQI
24th March 2025
19AQI
19AQI
25th March 2025
23AQI
23AQI
26th March 2025
24AQI
24AQI
27th March 2025
20AQI
20AQI
28th March 2025
20AQI
20AQI
29th March 2025
21AQI
21AQI
30th March 2025
24AQI
24AQI
31st March 2025
19AQI
19AQI
1st April 2025
21AQI
21AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
22AQI
22AQI
4th April 2025
26AQI
26AQI
5th April 2025
23AQI
23AQI
6th April 2025
24AQI
24AQI
7th April 2025
22AQI
22AQI
8th April 2025
16AQI
16AQI
9th April 2025
15AQI
15AQI
10th April 2025
23AQI
23AQI
11th April 2025
19AQI
19AQI
12th April 2025
19AQI
19AQI
13th April 2025
19AQI
19AQI
14th April 2025
25AQI
25AQI
15th April 2025
26AQI
26AQI
16th April 2025
25AQI
25AQI
17th April 2025
18AQI
18AQI
18th April 2025
22AQI
22AQI
19th April 2025
23AQI
23AQI
20th April 2025
22AQI
22AQI
21st April 2025
14AQI
14AQI
22nd April 2025
21AQI
21AQI
23rd April 2025
24AQI
24AQI
24th April 2025
27AQI
27AQI
25th April 2025
25AQI
25AQI
26th April 2025
27AQI
27AQI
27th April 2025
32AQI
32AQI
28th April 2025
23AQI
23AQI
29th April 2025
21AQI
21AQI
30th April 2025
20AQI
20AQI
1st May 2025
23AQI
23AQI
2nd May 2025
26AQI
26AQI
3rd May 2025
29AQI
29AQI
4th May 2025
15AQI
15AQI
5th May 2025
17AQI
17AQI
6th May 2025
20AQI
20AQI
7th May 2025
19AQI
19AQI
8th May 2025
18AQI
18AQI
9th May 2025
24AQI
24AQI
10th May 2025
24AQI
24AQI
11th May 2025
19AQI
19AQI
12th May 2025
18AQI
18AQI
13th May 2025
16AQI
16AQI
14th May 2025
18AQI
18AQI
15th May 2025
19AQI
19AQI
16th May 2025
18AQI
18AQI
17th May 2025
15AQI
15AQI
18th May 2025
13AQI
13AQI
19th May 2025
17AQI
17AQI
20th May 2025
13AQI
13AQI
21st May 2025
14AQI
14AQI
22nd May 2025
18AQI
18AQI
23rd May 2025
17AQI
17AQI
24th May 2025
19AQI
19AQI
25th May 2025
21AQI
21AQI
26th May 2025
23AQI
23AQI
27th May 2025
18AQI
18AQI
28th May 2025
20AQI
20AQI
29th May 2025
21AQI
21AQI
30th May 2025
18AQI
18AQI
31st May 2025
23AQI
23AQI
1st June 2025
22AQI
22AQI
2nd June 2025
19AQI
19AQI
3rd June 2025
21AQI
21AQI
4th June 2025
21AQI
21AQI
5th June 2025
23AQI
23AQI
6th June 2025
25AQI
25AQI
7th June 2025
26AQI
26AQI
8th June 2025
30AQI
30AQI
9th June 2025
29AQI
29AQI
10th June 2025
34AQI
34AQI
11th June 2025
31AQI
31AQI
12th June 2025
31AQI
31AQI
13th June 2025
24AQI
24AQI
14th June 2025
22AQI
22AQI
15th June 2025
22AQI
22AQI
16th June 2025
23AQI
23AQI
17th June 2025
25AQI
25AQI
18th June 2025
23AQI
23AQI
19th June 2025
20AQI
20AQI
20th June 2025
20AQI
20AQI
21st June 2025
15AQI
15AQI
22nd June 2025
15AQI
15AQI
23rd June 2025
20AQI
20AQI
24th June 2025
31AQI
31AQI
25th June 2025
30AQI
30AQI
26th June 2025
22AQI
22AQI
27th June 2025
18AQI
18AQI
28th June 2025
16AQI
16AQI
29th June 2025
17AQI
17AQI
30th June 2025
19AQI
19AQI
1st July 2025
25AQI
25AQI
2nd July 2025
25AQI
25AQI
3rd July 2025
25AQI
25AQI
4th July 2025
20AQI
20AQI
5th July 2025
26AQI
26AQI
6th July 2025
22AQI
22AQI
7th July 2025
22AQI
22AQI
8th July 2025
25AQI
25AQI
9th July 2025
24AQI
24AQI
10th July 2025
18AQI
18AQI
11th July 2025
20AQI
20AQI
12th July 2025
25AQI
25AQI
13th July 2025
23AQI
23AQI
14th July 2025
25AQI
25AQI
15th July 2025
26AQI
26AQI
16th July 2025
31AQI
31AQI
17th July 2025
35AQI
35AQI
18th July 2025
32AQI
32AQI
19th July 2025
29AQI
29AQI
20th July 2025
29AQI
29AQI
21st July 2025
30AQI
30AQI
22nd July 2025
28AQI
28AQI
23rd July 2025
30AQI
30AQI
24th July 2025
31AQI
31AQI
25th July 2025
26AQI
26AQI
26th July 2025
20AQI
20AQI
27th July 2025
20AQI
20AQI
28th July 2025
20AQI
20AQI
29th July 2025
23AQI
23AQI
30th July 2025
28AQI
28AQI
31st July 2025
35AQI
35AQI
1st August 2025
37AQI
37AQI
2nd August 2025
37AQI
37AQI
3rd August 2025
34AQI
34AQI
4th August 2025
31AQI
31AQI
5th August 2025
29AQI
29AQI
6th August 2025
30AQI
30AQI
7th August 2025
23AQI
23AQI
8th August 2025
18AQI
18AQI
34AQI
27AQI
20AQI
22AQI
19AQI
23AQI
26AQI
30AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202525AQI
29
2
28
31
30
31
30
31
8
218
2
Highest AQI recorded in
January34AQI
Lowest AQI recorded in
May19AQI
202430AQI
28
3
28
1
31
30
31
30
19
12
22
9
23
4
3
31
26
4
31
330
33
3
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
May21AQI
202329AQI
28
3
27
1
31
30
25
3
29
1
31
22
8
1
30
28
3
23
4
31
335
23
1
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
December19AQI
202228AQI
28
2
22
28
30
31
30
23
1
2
14
8
3
4
24
7
23
7
28
3
282
29
3
4
Highest AQI recorded in
September75AQI
Lowest AQI recorded in
May13AQI
202132AQI
26
4
28
31
30
31
30
10
18
3
18
9
2
2
23
5
2
31
26
2
31
315
38
7
2
Highest AQI recorded in
July64AQI
Lowest AQI recorded in
May19AQI
202034AQI
13
20
18
30
31
28
3
13
10
5
2
18
12
23
4
26
5
220
34
5
2
Highest AQI recorded in
September84AQI
Lowest AQI recorded in
June15AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
34AQILeast Polluted Year Recorded
2025(Avg.)
25AQILewiston's annual 2025 AQI (25) shows an average percentage change of -18.9% (improved AQI) compared to previous years: 2020 (34), 2021 (32), 2022 (28), 2023 (29), 2024 (30).
