Centennial HS, Gresham, 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+
July Air Quality Analysis
Centennial HS, Gresham, Oregon, United States
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
25th Jul 2026
61AQILowest AQI recorded on
2nd Jul 2025
14AQISame Day Analysis (27th July):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Day & Night AQI Trend: 27th Jul - 28th Jul 2026
Centennial HS, Gresham, Oregon, United States
AQI
Day
Night
.
5 AM27th Jul 2026
8 PM
4 AM28th Jul 2026
Day time
Avg. Highest Time
5PM27th Jul
73AQI
Avg. Lowest Time
6PM27th Jul
24AQI
Night time
Avg. Highest Time
11PM27th Jul
63AQI
Avg. Lowest Time
9PM27th Jul
40AQI
In the last 24 hours,
Centennial HS's AQI reached its highest point of 73 at 5 PM during the Day, while the lowest point, 24, was recorded at 6 PM during the Day between 27th Jul and 28th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Centennial HS, Gresham, Oregon, United States
JunJul
29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th
Day
Night
29th Jun 2026245 AMAQI
29th Jun 2026256 AMAQI
29th Jun 2026247 AMAQI
29th Jun 2026278 AMAQI
29th Jun 2026289 AMAQI
29th Jun 20262610 AMAQI
29th Jun 20262611 AMAQI
29th Jun 20262612 PMAQI
29th Jun 2026251 PMAQI
29th Jun 2026252 PMAQI
29th Jun 2026253 PMAQI
29th Jun 2026224 PMAQI
29th Jun 2026265 PMAQI
29th Jun 2026246 PMAQI
29th Jun 2026267 PMAQI
29th Jun 2026268 PMAQI
29th Jun 2026249 PMAQI
29th Jun 20262610 PMAQI
29th Jun 20262411 PMAQI
30th Jun 20262312 AMAQI
30th Jun 2026241 AMAQI
30th Jun 2026262 AMAQI
30th Jun 2026243 AMAQI
30th Jun 2026234 AMAQI
15°C11/18°C
30th Jun 2026255 AMAQI
30th Jun 2026246 AMAQI
30th Jun 2026277 AMAQI
30th Jun 2026268 AMAQI
30th Jun 2026269 AMAQI
30th Jun 20262810 AMAQI
30th Jun 20262811 AMAQI
30th Jun 20262612 PMAQI
30th Jun 2026271 PMAQI
30th Jun 2026262 PMAQI
30th Jun 2026273 PMAQI
30th Jun 2026284 PMAQI
30th Jun 2026275 PMAQI
30th Jun 2026306 PMAQI
30th Jun 2026287 PMAQI
30th Jun 2026288 PMAQI
30th Jun 2026309 PMAQI
30th Jun 20262910 PMAQI
30th Jun 20262411 PMAQI
1st Jul 20263012 AMAQI
1st Jul 2026261 AMAQI
1st Jul 2026262 AMAQI
1st Jul 2026263 AMAQI
1st Jul 2026264 AMAQI
15°C13/18°C
1st Jul 2026285 AMAQI
1st Jul 2026266 AMAQI
1st Jul 2026287 AMAQI
1st Jul 2026308 AMAQI
1st Jul 2026299 AMAQI
1st Jul 20262810 AMAQI
1st Jul 20262711 AMAQI
1st Jul 20262812 PMAQI
1st Jul 2026281 PMAQI
1st Jul 2026252 PMAQI
1st Jul 2026273 PMAQI
1st Jul 2026264 PMAQI
1st Jul 2026275 PMAQI
1st Jul 2026296 PMAQI
1st Jul 2026217 PMAQI
1st Jul 2026228 PMAQI
1st Jul 2026219 PMAQI
1st Jul 20262310 PMAQI
1st Jul 20262311 PMAQI
2nd Jul 20262212 AMAQI
2nd Jul 2026241 AMAQI
2nd Jul 2026282 AMAQI
2nd Jul 2026283 AMAQI
2nd Jul 2026274 AMAQI
15°C10/19°C
2nd Jul 2026285 AMAQI
2nd Jul 2026286 AMAQI
2nd Jul 2026287 AMAQI
2nd Jul 2026308 AMAQI
2nd Jul 2026279 AMAQI
2nd Jul 20262710 AMAQI
2nd Jul 20262611 AMAQI
2nd Jul 20262612 PMAQI
2nd Jul 2026281 PMAQI
2nd Jul 2026282 PMAQI
2nd Jul 2026283 PMAQI
2nd Jul 2026284 PMAQI
2nd Jul 2026245 PMAQI
2nd Jul 2026266 PMAQI
2nd Jul 2026247 PMAQI
2nd Jul 2026268 PMAQI
2nd Jul 2026269 PMAQI
2nd Jul 20263010 PMAQI
2nd Jul 20263011 PMAQI
3rd Jul 20262812 AMAQI
3rd Jul 2026281 AMAQI
3rd Jul 2026262 AMAQI
3rd Jul 2026303 AMAQI
3rd Jul 2026304 AMAQI
17°C11/24°C
3rd Jul 2026305 AMAQI
3rd Jul 2026286 AMAQI
3rd Jul 2026287 AMAQI
3rd Jul 2026328 AMAQI
3rd Jul 2026299 AMAQI
3rd Jul 20263010 AMAQI
3rd Jul 20263011 AMAQI
3rd Jul 20262812 PMAQI
3rd Jul 2026301 PMAQI
3rd Jul 2026302 PMAQI
3rd Jul 2026273 PMAQI
3rd Jul 2026284 PMAQI
3rd Jul 2026265 PMAQI
3rd Jul 2026266 PMAQI
3rd Jul 2026247 PMAQI
3rd Jul 2026248 PMAQI
3rd Jul 2026249 PMAQI
3rd Jul 20262410 PMAQI
3rd Jul 20262911 PMAQI
4th Jul 20263112 AMAQI
4th Jul 2026281 AMAQI
4th Jul 2026282 AMAQI
4th Jul 2026263 AMAQI
4th Jul 2026284 AMAQI
20°C14/28°C
4th Jul 2026285 AMAQI
4th Jul 2026286 AMAQI
4th Jul 2026277 AMAQI
4th Jul 2026268 AMAQI
4th Jul 2026309 AMAQI
4th Jul 20262610 AMAQI
4th Jul 20262411 AMAQI
4th Jul 20262412 PMAQI
4th Jul 2026261 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026223 PMAQI
4th Jul 2026254 PMAQI
4th Jul 2026205 PMAQI
4th Jul 2026216 PMAQI
4th Jul 2026207 PMAQI
4th Jul 2026198 PMAQI
4th Jul 2026219 PMAQI
4th Jul 20262210 PMAQI
4th Jul 20262811 PMAQI
5th Jul 20262712 AMAQI
5th Jul 2026281 AMAQI
5th Jul 2026262 AMAQI
5th Jul 2026243 AMAQI
5th Jul 2026224 AMAQI
19°C14/28°C
5th Jul 2026275 AMAQI
5th Jul 2026246 AMAQI
5th Jul 2026297 AMAQI
5th Jul 2026308 AMAQI
5th Jul 2026289 AMAQI
5th Jul 20262810 AMAQI
5th Jul 20262811 AMAQI
5th Jul 20262612 PMAQI
5th Jul 2026281 PMAQI
5th Jul 2026262 PMAQI
5th Jul 2026263 PMAQI
5th Jul 2026244 PMAQI
5th Jul 2026215 PMAQI
5th Jul 2026236 PMAQI
5th Jul 2026227 PMAQI
5th Jul 2026208 PMAQI
5th Jul 2026209 PMAQI
5th Jul 20262410 PMAQI
5th Jul 20262511 PMAQI
6th Jul 20262712 AMAQI
6th Jul 2026201 AMAQI
6th Jul 2026202 AMAQI
6th Jul 2026233 AMAQI
6th Jul 2026304 AMAQI
20°C12/30°C
6th Jul 2026285 AMAQI
6th Jul 2026286 AMAQI
6th Jul 2026287 AMAQI
6th Jul 2026328 AMAQI
6th Jul 2026329 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20263111 AMAQI
6th Jul 20262812 PMAQI
6th Jul 2026311 PMAQI
6th Jul 2026312 PMAQI
6th Jul 2026303 PMAQI
6th Jul 2026304 PMAQI
6th Jul 2026265 PMAQI
6th Jul 2026286 PMAQI
6th Jul 2026247 PMAQI
6th Jul 2026268 PMAQI
6th Jul 2026229 PMAQI
6th Jul 20262610 PMAQI
6th Jul 20262911 PMAQI
7th Jul 20262812 AMAQI
7th Jul 2026301 AMAQI
7th Jul 2026282 AMAQI
7th Jul 2026323 AMAQI
7th Jul 2026284 AMAQI
23°C13/33°C
7th Jul 2026305 AMAQI
7th Jul 2026286 AMAQI
7th Jul 2026297 AMAQI
7th Jul 2026328 AMAQI
7th Jul 2026329 AMAQI
7th Jul 20263110 AMAQI
7th Jul 20263011 AMAQI
7th Jul 20263012 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026302 PMAQI
7th Jul 2026303 PMAQI
7th Jul 2026304 PMAQI
7th Jul 2026265 PMAQI
7th Jul 2026276 PMAQI
7th Jul 2026267 PMAQI
7th Jul 2026268 PMAQI
7th Jul 2026249 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262911 PMAQI
8th Jul 20262912 AMAQI
8th Jul 2026271 AMAQI
8th Jul 2026262 AMAQI
8th Jul 2026223 AMAQI
8th Jul 2026204 AMAQI
21°C14/29°C
8th Jul 2026235 AMAQI
8th Jul 2026246 AMAQI
8th Jul 2026277 AMAQI
8th Jul 2026308 AMAQI
8th Jul 2026319 AMAQI
8th Jul 20263110 AMAQI
8th Jul 20262911 AMAQI
8th Jul 20262912 PMAQI
8th Jul 2026291 PMAQI
8th Jul 2026302 PMAQI
8th Jul 2026323 PMAQI
8th Jul 2026284 PMAQI
8th Jul 2026265 PMAQI
8th Jul 2026266 PMAQI
8th Jul 2026267 PMAQI
8th Jul 2026248 PMAQI
8th Jul 2026219 PMAQI
8th Jul 20262810 PMAQI
8th Jul 20263011 PMAQI
9th Jul 20262612 AMAQI
9th Jul 2026261 AMAQI
9th Jul 2026262 AMAQI
9th Jul 2026273 AMAQI
9th Jul 2026274 AMAQI
20°C15/28°C
9th Jul 2026285 AMAQI
9th Jul 2026266 AMAQI
9th Jul 2026307 AMAQI
9th Jul 2026328 AMAQI
9th Jul 2026329 AMAQI
9th Jul 20263010 AMAQI
9th Jul 20263211 AMAQI
9th Jul 20262812 PMAQI
9th Jul 2026301 PMAQI
9th Jul 2026322 PMAQI
9th Jul 2026303 PMAQI
9th Jul 2026314 PMAQI
9th Jul 2026285 PMAQI
9th Jul 2026316 PMAQI
9th Jul 2026287 PMAQI
9th Jul 2026288 PMAQI
9th Jul 2026269 PMAQI
9th Jul 20262610 PMAQI
9th Jul 20262611 PMAQI
10th Jul 20262812 AMAQI
10th Jul 2026321 AMAQI
10th Jul 2026322 AMAQI
10th Jul 2026323 AMAQI
10th Jul 2026314 AMAQI
20°C11/29°C
10th Jul 2026345 AMAQI
10th Jul 2026346 AMAQI
10th Jul 2026347 AMAQI
10th Jul 2026348 AMAQI
10th Jul 2026389 AMAQI
10th Jul 20263310 AMAQI
10th Jul 20263511 AMAQI
10th Jul 20262812 PMAQI
10th Jul 2026321 PMAQI
10th Jul 2026362 PMAQI
10th Jul 2026323 PMAQI
10th Jul 2026354 PMAQI
10th Jul 2026365 PMAQI
10th Jul 2026346 PMAQI
10th Jul 2026327 PMAQI
10th Jul 2026298 PMAQI
10th Jul 2026269 PMAQI
10th Jul 20262410 PMAQI
10th Jul 20262311 PMAQI
11th Jul 20262812 AMAQI
11th Jul 2026331 AMAQI
11th Jul 2026302 AMAQI
11th Jul 2026313 AMAQI
11th Jul 2026284 AMAQI
20°C13/28°C
11th Jul 2026315 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026327 AMAQI
11th Jul 2026348 AMAQI
11th Jul 2026349 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20263211 AMAQI
11th Jul 20263012 PMAQI
11th Jul 2026321 PMAQI
11th Jul 2026332 PMAQI
11th Jul 2026323 PMAQI
11th Jul 2026324 PMAQI
11th Jul 2026315 PMAQI
11th Jul 2026326 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026308 PMAQI
11th Jul 2026249 PMAQI
11th Jul 20262310 PMAQI
11th Jul 20262511 PMAQI
12th Jul 20262612 AMAQI
12th Jul 2026321 AMAQI
12th Jul 2026302 AMAQI
12th Jul 2026303 AMAQI
12th Jul 2026294 AMAQI
19°C15/27°C
12th Jul 2026325 AMAQI
12th Jul 2026316 AMAQI
12th Jul 2026317 AMAQI
12th Jul 2026348 AMAQI
12th Jul 2026319 AMAQI
12th Jul 20263010 AMAQI
12th Jul 20262911 AMAQI
12th Jul 20262812 PMAQI
12th Jul 2026301 PMAQI
12th Jul 2026312 PMAQI
12th Jul 2026303 PMAQI
12th Jul 2026304 PMAQI
12th Jul 2026305 PMAQI
12th Jul 2026306 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026268 PMAQI
12th Jul 2026249 PMAQI
12th Jul 20262410 PMAQI
12th Jul 20262111 PMAQI
13th Jul 20262712 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026342 AMAQI
13th Jul 2026323 AMAQI
13th Jul 2026324 AMAQI
19°C13/28°C
13th Jul 2026345 AMAQI
13th Jul 2026326 AMAQI
13th Jul 2026377 AMAQI
13th Jul 2026358 AMAQI
13th Jul 2026349 AMAQI
13th Jul 20263410 AMAQI
13th Jul 20263311 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026331 PMAQI
13th Jul 2026322 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026304 PMAQI
13th Jul 2026355 PMAQI
13th Jul 2026366 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026248 PMAQI
13th Jul 2026209 PMAQI
13th Jul 20262210 PMAQI
13th Jul 20262011 PMAQI
14th Jul 20262612 AMAQI
14th Jul 2026301 AMAQI
14th Jul 2026312 AMAQI
14th Jul 2026303 AMAQI
14th Jul 2026314 AMAQI
22°C12/31°C
14th Jul 2026325 AMAQI
14th Jul 2026326 AMAQI
14th Jul 2026367 AMAQI
14th Jul 2026388 AMAQI
14th Jul 2026369 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20263111 AMAQI
14th Jul 20262712 PMAQI
14th Jul 2026311 PMAQI
14th Jul 2026242 PMAQI
14th Jul 2026333 PMAQI
14th Jul 2026334 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026316 PMAQI
14th Jul 2026297 PMAQI
14th Jul 2026258 PMAQI
14th Jul 2026229 PMAQI
14th Jul 20262210 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026281 AMAQI
15th Jul 2026282 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026264 AMAQI
24°C15/33°C
15th Jul 2026265 AMAQI
15th Jul 2026266 AMAQI
15th Jul 2026247 AMAQI
15th Jul 2026278 AMAQI
15th Jul 2026289 AMAQI
15th Jul 20262810 AMAQI
15th Jul 20263011 AMAQI
15th Jul 20262812 PMAQI
15th Jul 2026301 PMAQI
15th Jul 2026312 PMAQI
15th Jul 2026323 PMAQI
15th Jul 2026304 PMAQI
15th Jul 2026305 PMAQI
15th Jul 2026306 PMAQI
15th Jul 2026307 PMAQI
15th Jul 2026288 PMAQI
15th Jul 2026289 PMAQI
15th Jul 20262710 PMAQI
15th Jul 20262411 PMAQI
16th Jul 20262412 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026282 AMAQI
16th Jul 2026303 AMAQI
16th Jul 2026304 AMAQI
23°C16/32°C
16th Jul 2026285 AMAQI
16th Jul 2026286 AMAQI
16th Jul 2026307 AMAQI
16th Jul 2026318 AMAQI
16th Jul 2026309 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20262911 AMAQI
16th Jul 20263012 PMAQI
16th Jul 2026301 PMAQI
16th Jul 2026292 PMAQI
16th Jul 2026283 PMAQI
16th Jul 2026264 PMAQI
16th Jul 2026285 PMAQI
16th Jul 2026316 PMAQI
16th Jul 2026307 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026269 PMAQI
16th Jul 20262410 PMAQI
16th Jul 20262411 PMAQI
17th Jul 20262912 AMAQI
17th Jul 2026241 AMAQI
17th Jul 2026512 AMAQI
17th Jul 20261203 AMAQI
17th Jul 20261234 AMAQI
19°C15/26°C
17th Jul 20261365 AMAQI
17th Jul 2026726 AMAQI
17th Jul 2026717 AMAQI
17th Jul 2026568 AMAQI
17th Jul 2026799 AMAQI
17th Jul 20263010 AMAQI
17th Jul 20267511 AMAQI
17th Jul 20266612 PMAQI
17th Jul 2026541 PMAQI
17th Jul 2026542 PMAQI
17th Jul 2026543 PMAQI
17th Jul 2026404 PMAQI
17th Jul 2026455 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026547 PMAQI
17th Jul 2026608 PMAQI
17th Jul 2026379 PMAQI
17th Jul 20264310 PMAQI
17th Jul 20262511 PMAQI
18th Jul 20262712 AMAQI
18th Jul 2026591 AMAQI
18th Jul 2026662 AMAQI
18th Jul 2026403 AMAQI
18th Jul 2026684 AMAQI
19°C12/27°C
18th Jul 2026625 AMAQI
18th Jul 2026626 AMAQI
18th Jul 2026697 AMAQI
18th Jul 2026698 AMAQI
18th Jul 2026569 AMAQI
18th Jul 20266810 AMAQI
18th Jul 20267811 AMAQI
18th Jul 20264212 PMAQI
18th Jul 2026581 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026423 PMAQI
18th Jul 2026584 PMAQI
18th Jul 2026625 PMAQI
18th Jul 2026576 PMAQI
18th Jul 2026587 PMAQI
18th Jul 2026278 PMAQI
18th Jul 2026409 PMAQI
18th Jul 20264010 PMAQI
18th Jul 20263811 PMAQI
19th Jul 20263612 AMAQI
19th Jul 2026341 AMAQI
19th Jul 2026462 AMAQI
19th Jul 2026513 AMAQI
19th Jul 2026654 AMAQI
20°C13/29°C
19th Jul 2026735 AMAQI
19th Jul 2026656 AMAQI
19th Jul 2026607 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026549 AMAQI
19th Jul 20263410 AMAQI
19th Jul 20263211 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026282 PMAQI
19th Jul 2026443 PMAQI
19th Jul 2026364 PMAQI
19th Jul 2026425 PMAQI
19th Jul 2026446 PMAQI
19th Jul 2026747 PMAQI
19th Jul 2026468 PMAQI
19th Jul 2026449 PMAQI
19th Jul 20265610 PMAQI
19th Jul 20264011 PMAQI
20th Jul 20262812 AMAQI
20th Jul 2026541 AMAQI
20th Jul 2026462 AMAQI
20th Jul 2026283 AMAQI
20th Jul 2026484 AMAQI
22°C14/31°C
20th Jul 2026605 AMAQI
20th Jul 2026606 AMAQI
20th Jul 2026767 AMAQI
20th Jul 2026408 AMAQI
20th Jul 2026549 AMAQI
20th Jul 20263210 AMAQI
20th Jul 20266511 AMAQI
20th Jul 20265412 PMAQI
20th Jul 2026441 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026453 PMAQI
20th Jul 2026274 PMAQI
20th Jul 2026565 PMAQI
20th Jul 2026446 PMAQI
20th Jul 2026447 PMAQI
20th Jul 2026449 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20264411 PMAQI
21st Jul 20264412 AMAQI
21st Jul 2026461 AMAQI
21st Jul 2026512 AMAQI
21st Jul 2026513 AMAQI
21st Jul 2026514 AMAQI
24°C16/34°C
21st Jul 2026525 AMAQI
21st Jul 2026466 AMAQI
21st Jul 2026507 AMAQI
21st Jul 2026528 AMAQI
21st Jul 2026489 AMAQI
21st Jul 20265210 AMAQI
21st Jul 20265111 AMAQI
21st Jul 20265012 PMAQI
21st Jul 2026511 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026573 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026715 PMAQI
21st Jul 2026756 PMAQI
21st Jul 2026667 PMAQI
21st Jul 2026728 PMAQI
21st Jul 2026609 PMAQI
21st Jul 20266310 PMAQI
21st Jul 20265711 PMAQI
22nd Jul 20265212 AMAQI
22nd Jul 2026551 AMAQI
22nd Jul 2026522 AMAQI
22nd Jul 2026533 AMAQI
22nd Jul 2026524 AMAQI
29°C17/40°C
22nd Jul 2026525 AMAQI
22nd Jul 2026506 AMAQI
22nd Jul 2026467 AMAQI
22nd Jul 2026488 AMAQI
22nd Jul 2026529 AMAQI
22nd Jul 20265610 AMAQI
22nd Jul 20265611 AMAQI
22nd Jul 20265812 PMAQI
22nd Jul 2026581 PMAQI
22nd Jul 2026622 PMAQI
22nd Jul 2026643 PMAQI
22nd Jul 2026684 PMAQI
22nd Jul 2026645 PMAQI
22nd Jul 2026626 PMAQI
22nd Jul 2026637 PMAQI
22nd Jul 2026588 PMAQI
22nd Jul 2026569 PMAQI
22nd Jul 20265010 PMAQI
22nd Jul 20265011 PMAQI
23rd Jul 20264612 AMAQI
23rd Jul 2026461 AMAQI
23rd Jul 2026422 AMAQI
23rd Jul 2026423 AMAQI
23rd Jul 2026444 AMAQI
29°C21/41°C
23rd Jul 2026405 AMAQI
23rd Jul 2026426 AMAQI
23rd Jul 2026427 AMAQI
23rd Jul 2026448 AMAQI
23rd Jul 2026429 AMAQI
23rd Jul 20264210 AMAQI
23rd Jul 20264611 AMAQI
23rd Jul 20264012 PMAQI
23rd Jul 2026381 PMAQI
23rd Jul 2026542 PMAQI
23rd Jul 2026573 PMAQI
23rd Jul 2026684 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026516 PMAQI
23rd Jul 2026727 PMAQI
23rd Jul 2026448 PMAQI
23rd Jul 2026579 PMAQI
23rd Jul 20266710 PMAQI
23rd Jul 20265411 PMAQI
24th Jul 20263012 AMAQI
24th Jul 2026381 AMAQI
24th Jul 2026562 AMAQI
24th Jul 2026583 AMAQI
24th Jul 2026444 AMAQI
21°C17/28°C
24th Jul 2026425 AMAQI
24th Jul 2026426 AMAQI
24th Jul 2026507 AMAQI
24th Jul 2026658 AMAQI
24th Jul 2026679 AMAQI
24th Jul 20266910 AMAQI
24th Jul 20267211 AMAQI
24th Jul 20266712 PMAQI
24th Jul 2026731 PMAQI
24th Jul 2026672 PMAQI
24th Jul 2026543 PMAQI
24th Jul 2026604 PMAQI
24th Jul 2026665 PMAQI
24th Jul 2026746 PMAQI
24th Jul 2026687 PMAQI
24th Jul 2026658 PMAQI
24th Jul 2026589 PMAQI
24th Jul 20265610 PMAQI
24th Jul 20265411 PMAQI
25th Jul 20265412 AMAQI
25th Jul 2026571 AMAQI
25th Jul 2026672 AMAQI
25th Jul 2026633 AMAQI
25th Jul 2026564 AMAQI
23°C15/32°C
25th Jul 2026605 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026567 AMAQI
25th Jul 2026628 AMAQI
25th Jul 2026569 AMAQI
25th Jul 20265410 AMAQI
25th Jul 20266311 AMAQI
25th Jul 20266012 PMAQI
25th Jul 2026601 PMAQI
25th Jul 2026662 PMAQI
25th Jul 2026623 PMAQI
25th Jul 2026574 PMAQI
25th Jul 2026725 PMAQI
25th Jul 2026666 PMAQI
25th Jul 2026677 PMAQI
25th Jul 2026888 PMAQI
25th Jul 2026829 PMAQI
25th Jul 20265510 PMAQI
25th Jul 20263811 PMAQI
26th Jul 20264912 AMAQI
26th Jul 2026591 AMAQI
26th Jul 2026622 AMAQI
26th Jul 2026523 AMAQI
26th Jul 2026424 AMAQI
20°C14/24°C
26th Jul 2026665 AMAQI
26th Jul 2026706 AMAQI
26th Jul 2026727 AMAQI
26th Jul 2026688 AMAQI
26th Jul 2026669 AMAQI
26th Jul 20267310 AMAQI
26th Jul 20266011 AMAQI
26th Jul 20266212 PMAQI
26th Jul 2026601 PMAQI
26th Jul 2026582 PMAQI
26th Jul 2026943 PMAQI
26th Jul 2026534 PMAQI
26th Jul 2026575 PMAQI
26th Jul 2026546 PMAQI
26th Jul 2026667 PMAQI
26th Jul 2026568 PMAQI
26th Jul 2026429 PMAQI
26th Jul 20265910 PMAQI
26th Jul 20266011 PMAQI
27th Jul 20264312 AMAQI
27th Jul 2026551 AMAQI
27th Jul 2026222 AMAQI
27th Jul 2026383 AMAQI
27th Jul 2026484 AMAQI
21°C15/28°C
27th Jul 2026405 AMAQI
27th Jul 2026606 AMAQI
27th Jul 2026697 AMAQI
27th Jul 2026678 AMAQI
27th Jul 2026459 AMAQI
27th Jul 20267110 AMAQI
27th Jul 20266911 AMAQI
27th Jul 20266612 PMAQI
27th Jul 2026461 PMAQI
27th Jul 2026622 PMAQI
27th Jul 2026583 PMAQI
27th Jul 2026634 PMAQI
27th Jul 2026735 PMAQI
27th Jul 2026246 PMAQI
27th Jul 2026707 PMAQI
27th Jul 2026708 PMAQI
27th Jul 2026409 PMAQI
27th Jul 20264210 PMAQI
27th Jul 20266311 PMAQI
28th Jul 20265812 AMAQI
28th Jul 2026581 AMAQI
28th Jul 2026602 AMAQI
28th Jul 2026583 AMAQI
28th Jul 2026604 AMAQI
22°C13/30°C
28th Jul 2026665 AMAQI
5 AM28th Jul 2026566 AMAQI
28th Jul 2026277 AMAQI
28th Jul 2026528 AMAQI
28th Jul 2026719 AMAQI
28th Jul 20267110 AMAQI
28th Jul 20267011 AMAQI
28th Jul 20267312 PMAQI
12 PM28th Jul 2026591 PMAQI
28th Jul 2026452 PMAQI
28th Jul 2026623 PMAQI
28th Jul 2026484 PMAQI
28th Jul 2026235 PMAQI
28th Jul 2026266 PMAQI
28th Jul 2026487 PMAQI
28th Jul 2026238 PMAQI
8 PM28th Jul 2026429 PMAQI
28th Jul 20265210 PMAQI
28th Jul 20261811 PMAQI
12 AM
4 AM
20°C16/27°C
Day time
Avg. Highest Time
5 AM
42AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 PM - 6 PM
38AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 42), while the lowest AQI was between 4 PM to 6 PM (Avg. 38).
Night time
Avg. Highest Time
4 AM
40AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 40), while the lowest AQI was between 12 AM to 12 AM (Avg. 32).
2026 Days Vs Air Quality
Centennial HS, Gresham, Oregon, United States
2026
92%
188
8%
17
Total number of days with different AQI categories in last 209 days in 2026 (156 days remaining)
Good
188 DaysModerate
17 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 209 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
Centennial HS, Gresham, Oregon, United States
AQI levels in 2026
AQI (US)
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.
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
28AQI (US)
28AQI (US)
2nd January 2026
18AQI (US)
18AQI (US)
3rd January 2026
27AQI (US)
27AQI (US)
4th January 2026
12AQI (US)
12AQI (US)
5th January 2026
20AQI (US)
20AQI (US)
6th January 2026
28AQI (US)
28AQI (US)
7th January 2026
11AQI (US)
11AQI (US)
8th January 2026
11AQI (US)
11AQI (US)
9th January 2026
14AQI (US)
14AQI (US)
10th January 2026
49AQI (US)
49AQI (US)
11th January 2026
48AQI (US)
48AQI (US)
12th January 2026
43AQI (US)
43AQI (US)
13th January 2026
60AQI (US)
60AQI (US)
14th January 2026
61AQI (US)
61AQI (US)
15th January 2026
41AQI (US)
41AQI (US)
16th January 2026
17AQI (US)
17AQI (US)
17th January 2026
20AQI (US)
20AQI (US)
18th January 2026
26AQI (US)
26AQI (US)
19th January 2026
20AQI (US)
20AQI (US)
20th January 2026
27AQI (US)
27AQI (US)
21st January 2026
26AQI (US)
26AQI (US)
22nd January 2026
48AQI (US)
48AQI (US)
23rd January 2026
54AQI (US)
54AQI (US)
24th January 2026
48AQI (US)
48AQI (US)
25th January 2026
45AQI (US)
45AQI (US)
26th January 2026
46AQI (US)
46AQI (US)
27th January 2026
44AQI (US)
44AQI (US)
28th January 2026
47AQI (US)
47AQI (US)
29th January 2026
52AQI (US)
52AQI (US)
30th January 2026
49AQI (US)
49AQI (US)
31st January 2026
45AQI (US)
45AQI (US)
1st February 2026
48AQI (US)
48AQI (US)
2nd February 2026
49AQI (US)
49AQI (US)
3rd February 2026
49AQI (US)
49AQI (US)
4th February 2026
48AQI (US)
48AQI (US)
5th February 2026
47AQI (US)
47AQI (US)
6th February 2026
39AQI (US)
39AQI (US)
7th February 2026
40AQI (US)
40AQI (US)
8th February 2026
46AQI (US)
46AQI (US)
9th February 2026
46AQI (US)
46AQI (US)
10th February 2026
46AQI (US)
46AQI (US)
11th February 2026
40AQI (US)
40AQI (US)
12th February 2026
42AQI (US)
42AQI (US)
13th February 2026
48AQI (US)
48AQI (US)
14th February 2026
48AQI (US)
48AQI (US)
15th February 2026
39AQI (US)
39AQI (US)
16th February 2026
44AQI (US)
44AQI (US)
17th February 2026
46AQI (US)
46AQI (US)
18th February 2026
40AQI (US)
40AQI (US)
19th February 2026
41AQI (US)
41AQI (US)
20th February 2026
38AQI (US)
38AQI (US)
21st February 2026
34AQI (US)
34AQI (US)
22nd February 2026
37AQI (US)
37AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
46AQI (US)
46AQI (US)
25th February 2026
41AQI (US)
41AQI (US)
26th February 2026
36AQI (US)
36AQI (US)
27th February 2026
34AQI (US)
34AQI (US)
28th February 2026
39AQI (US)
39AQI (US)
1st March 2026
40AQI (US)
40AQI (US)
2nd March 2026
55AQI (US)
55AQI (US)
3rd March 2026
46AQI (US)
46AQI (US)
4th March 2026
46AQI (US)
46AQI (US)
5th March 2026
41AQI (US)
41AQI (US)
6th March 2026
38AQI (US)
38AQI (US)
7th March 2026
40AQI (US)
40AQI (US)
8th March 2026
40AQI (US)
40AQI (US)
9th March 2026
40AQI (US)
40AQI (US)
10th March 2026
35AQI (US)
35AQI (US)
11th March 2026
43AQI (US)
43AQI (US)
12th March 2026
42AQI (US)
42AQI (US)
13th March 2026
40AQI (US)
40AQI (US)
14th March 2026
35AQI (US)
35AQI (US)
15th March 2026
36AQI (US)
36AQI (US)
16th March 2026
36AQI (US)
36AQI (US)
17th March 2026
33AQI (US)
33AQI (US)
18th March 2026
32AQI (US)
32AQI (US)
19th March 2026
31AQI (US)
31AQI (US)
20th March 2026
37AQI (US)
37AQI (US)
21st March 2026
37AQI (US)
37AQI (US)
22nd March 2026
37AQI (US)
37AQI (US)
23rd March 2026
39AQI (US)
39AQI (US)
24th March 2026
37AQI (US)
37AQI (US)
25th March 2026
31AQI (US)
31AQI (US)
26th March 2026
28AQI (US)
28AQI (US)
27th March 2026
29AQI (US)
29AQI (US)
28th March 2026
31AQI (US)
31AQI (US)
29th March 2026
29AQI (US)
29AQI (US)
30th March 2026
26AQI (US)
26AQI (US)
31st March 2026
25AQI (US)
25AQI (US)
1st April 2026
31AQI (US)
31AQI (US)
2nd April 2026
31AQI (US)
31AQI (US)
3rd April 2026
26AQI (US)
26AQI (US)
4th April 2026
31AQI (US)
31AQI (US)
5th April 2026
28AQI (US)
28AQI (US)
6th April 2026
26AQI (US)
26AQI (US)
7th April 2026
26AQI (US)
26AQI (US)
8th April 2026
30AQI (US)
30AQI (US)
9th April 2026
28AQI (US)
28AQI (US)
10th April 2026
31AQI (US)
31AQI (US)
11th April 2026
30AQI (US)
30AQI (US)
12th April 2026
26AQI (US)
26AQI (US)
13th April 2026
33AQI (US)
33AQI (US)
14th April 2026
33AQI (US)
33AQI (US)
15th April 2026
32AQI (US)
32AQI (US)
16th April 2026
29AQI (US)
29AQI (US)
17th April 2026
18th April 2026
28AQI (US)
28AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
26AQI (US)
26AQI (US)
21st April 2026
26AQI (US)
26AQI (US)
22nd April 2026
23rd April 2026
23AQI (US)
23AQI (US)
24th April 2026
26AQI (US)
26AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
25AQI (US)
25AQI (US)
28th April 2026
23AQI (US)
23AQI (US)
29th April 2026
23AQI (US)
23AQI (US)
30th April 2026
25AQI (US)
25AQI (US)
1st May 2026
26AQI (US)
26AQI (US)
2nd May 2026
23AQI (US)
23AQI (US)
3rd May 2026
23AQI (US)
23AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
32AQI (US)
32AQI (US)
6th May 2026
30AQI (US)
30AQI (US)
7th May 2026
28AQI (US)
28AQI (US)
8th May 2026
27AQI (US)
27AQI (US)
9th May 2026
10th May 2026
34AQI (US)
34AQI (US)
11th May 2026
29AQI (US)
29AQI (US)
12th May 2026
26AQI (US)
26AQI (US)
13th May 2026
27AQI (US)
27AQI (US)
14th May 2026
25AQI (US)
25AQI (US)
15th May 2026
47AQI (US)
47AQI (US)
16th May 2026
52AQI (US)
52AQI (US)
17th May 2026
58AQI (US)
58AQI (US)
18th May 2026
57AQI (US)
57AQI (US)
19th May 2026
55AQI (US)
55AQI (US)
20th May 2026
50AQI (US)
50AQI (US)
21st May 2026
41AQI (US)
41AQI (US)
22nd May 2026
49AQI (US)
49AQI (US)
23rd May 2026
49AQI (US)
49AQI (US)
24th May 2026
47AQI (US)
47AQI (US)
25th May 2026
43AQI (US)
43AQI (US)
26th May 2026
27AQI (US)
27AQI (US)
27th May 2026
28AQI (US)
28AQI (US)
28th May 2026
27AQI (US)
27AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
29AQI (US)
29AQI (US)
1st June 2026
31AQI (US)
31AQI (US)
2nd June 2026
31AQI (US)
31AQI (US)
3rd June 2026
29AQI (US)
29AQI (US)
4th June 2026
25AQI (US)
25AQI (US)
5th June 2026
28AQI (US)
28AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
24AQI (US)
24AQI (US)
8th June 2026
27AQI (US)
27AQI (US)
9th June 2026
26AQI (US)
26AQI (US)
10th June 2026
27AQI (US)
27AQI (US)
11th June 2026
27AQI (US)
27AQI (US)
12th June 2026
26AQI (US)
26AQI (US)
13th June 2026
25AQI (US)
25AQI (US)
14th June 2026
24AQI (US)
24AQI (US)
15th June 2026
26AQI (US)
26AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
28AQI (US)
28AQI (US)
18th June 2026
27AQI (US)
27AQI (US)
19th June 2026
24AQI (US)
24AQI (US)
20th June 2026
24AQI (US)
24AQI (US)
21st June 2026
22AQI (US)
22AQI (US)
22nd June 2026
25AQI (US)
25AQI (US)
23rd June 2026
24AQI (US)
24AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
25AQI (US)
25AQI (US)
26th June 2026
27AQI (US)
27AQI (US)
27th June 2026
29AQI (US)
29AQI (US)
28th June 2026
27AQI (US)
27AQI (US)
29th June 2026
25AQI (US)
25AQI (US)
30th June 2026
26AQI (US)
26AQI (US)
1st July 2026
26AQI (US)
26AQI (US)
2nd July 2026
27AQI (US)
27AQI (US)
3rd July 2026
28AQI (US)
28AQI (US)
4th July 2026
25AQI (US)
25AQI (US)
5th July 2026
25AQI (US)
25AQI (US)
6th July 2026
28AQI (US)
28AQI (US)
7th July 2026
29AQI (US)
29AQI (US)
8th July 2026
27AQI (US)
27AQI (US)
9th July 2026
29AQI (US)
29AQI (US)
10th July 2026
32AQI (US)
32AQI (US)
11th July 2026
30AQI (US)
30AQI (US)
12th July 2026
29AQI (US)
29AQI (US)
13th July 2026
31AQI (US)
31AQI (US)
14th July 2026
30AQI (US)
30AQI (US)
15th July 2026
28AQI (US)
28AQI (US)
16th July 2026
28AQI (US)
28AQI (US)
17th July 2026
59AQI (US)
59AQI (US)
18th July 2026
54AQI (US)
54AQI (US)
19th July 2026
46AQI (US)
46AQI (US)
20th July 2026
47AQI (US)
47AQI (US)
21st July 2026
55AQI (US)
55AQI (US)
22nd July 2026
56AQI (US)
56AQI (US)
23rd July 2026
48AQI (US)
48AQI (US)
24th July 2026
58AQI (US)
58AQI (US)
25th July 2026
61AQI (US)
61AQI (US)
26th July 2026
61AQI (US)
61AQI (US)
27th July 2026
54AQI (US)
54AQI (US)
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
35AQI (US)
43AQI (US)
37AQI (US)
28AQI (US)
36AQI (US)
26AQI (US)
39AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202635AQI (US)
27
4
28
30
1
28
26
4
30
19
8
188
17
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202527AQI (US)
6
30
31
30
31
30
1
26
4
25
6
21
9
24
7
254
27
Highest AQI (US) recorded in
November40AQI (US)
Lowest AQI (US) recorded in
May17AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Most Polluted Year Recorded
2026(Avg.)
35AQI (US)Least Polluted Year Recorded
2025(Avg.)
27AQI (US)Centennial HS's annual 2026 AQI (US) (35) shows an average percentage change of 29.6% (worsened AQI (US)) compared to previous years: 2025 (27).
