Guelph, Ontario, Canada 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
Guelph, Ontario, Canada
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
17th Jul 2026
216AQILowest AQI recorded on
1st Jul 2024
18AQISame Day Analysis (29th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 29th Jul - 30th Jul 2026
Guelph, Ontario, Canada
AQI
Day
Night
.
5 AM29th Jul 2026
9 PM
4 AM30th Jul 2026
Day time
Avg. Highest Time
7PM29th Jul
36AQI
Avg. Lowest Time
5PM29th Jul
20AQI
Night time
Avg. Highest Time
3AM30th Jul
34AQI
Avg. Lowest Time
10PM29th Jul
22AQI
In the last 24 hours,
Guelph's AQI reached its highest point of 36 at 7 PM during the Day, while the lowest point, 20, was recorded at 5 PM during the Day between 29th Jul and 30th Jul 2026.
Day & Night AQI Trend : Jul 2026
Guelph, Ontario, Canada
Jul
01st - 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 - 29th29th - 30th30th
Day
Night
1st Jul 2026605 AMAQI
1st Jul 2026596 AMAQI
1st Jul 2026587 AMAQI
1st Jul 2026568 AMAQI
1st Jul 2026559 AMAQI
1st Jul 20265610 AMAQI
1st Jul 20265611 AMAQI
1st Jul 20265712 PMAQI
1st Jul 2026541 PMAQI
1st Jul 2026552 PMAQI
1st Jul 2026543 PMAQI
1st Jul 2026564 PMAQI
1st Jul 2026635 PMAQI
1st Jul 2026476 PMAQI
1st Jul 2026327 PMAQI
1st Jul 2026538 PMAQI
1st Jul 2026259 PMAQI
1st Jul 20262710 PMAQI
1st Jul 20264611 PMAQI
2nd Jul 20264412 AMAQI
2nd Jul 2026421 AMAQI
2nd Jul 2026402 AMAQI
2nd Jul 2026423 AMAQI
2nd Jul 2026434 AMAQI
28°C22/36°C
2nd Jul 2026465 AMAQI
2nd Jul 2026446 AMAQI
2nd Jul 2026447 AMAQI
2nd Jul 2026508 AMAQI
2nd Jul 2026559 AMAQI
2nd Jul 20265410 AMAQI
2nd Jul 20265211 AMAQI
2nd Jul 20265612 PMAQI
2nd Jul 2026561 PMAQI
2nd Jul 2026532 PMAQI
2nd Jul 2026533 PMAQI
2nd Jul 2026504 PMAQI
2nd Jul 2026455 PMAQI
2nd Jul 2026446 PMAQI
2nd Jul 2026427 PMAQI
2nd Jul 2026428 PMAQI
2nd Jul 2026409 PMAQI
2nd Jul 20264410 PMAQI
2nd Jul 20264411 PMAQI
3rd Jul 20264412 AMAQI
3rd Jul 2026471 AMAQI
3rd Jul 2026442 AMAQI
3rd Jul 2026463 AMAQI
3rd Jul 2026434 AMAQI
27°C20/36°C
3rd Jul 2026465 AMAQI
3rd Jul 2026486 AMAQI
3rd Jul 2026447 AMAQI
3rd Jul 2026318 AMAQI
3rd Jul 2026339 AMAQI
3rd Jul 20263610 AMAQI
3rd Jul 20265011 AMAQI
3rd Jul 20265012 PMAQI
3rd Jul 2026471 PMAQI
3rd Jul 2026422 PMAQI
3rd Jul 2026333 PMAQI
3rd Jul 2026324 PMAQI
3rd Jul 2026285 PMAQI
3rd Jul 2026296 PMAQI
3rd Jul 2026307 PMAQI
3rd Jul 2026268 PMAQI
3rd Jul 2026289 PMAQI
3rd Jul 20262710 PMAQI
3rd Jul 20263311 PMAQI
4th Jul 20263612 AMAQI
4th Jul 2026311 AMAQI
4th Jul 2026302 AMAQI
4th Jul 2026303 AMAQI
4th Jul 2026304 AMAQI
27°C20/34°C
4th Jul 2026355 AMAQI
4th Jul 2026466 AMAQI
4th Jul 2026557 AMAQI
4th Jul 2026328 AMAQI
4th Jul 2026389 AMAQI
4th Jul 20263310 AMAQI
4th Jul 20263211 AMAQI
4th Jul 20263612 PMAQI
4th Jul 2026381 PMAQI
4th Jul 2026402 PMAQI
4th Jul 2026363 PMAQI
4th Jul 2026334 PMAQI
4th Jul 2026365 PMAQI
4th Jul 2026346 PMAQI
4th Jul 2026387 PMAQI
4th Jul 2026488 PMAQI
4th Jul 2026539 PMAQI
4th Jul 20264910 PMAQI
4th Jul 20264011 PMAQI
5th Jul 20263612 AMAQI
5th Jul 2026431 AMAQI
5th Jul 2026492 AMAQI
5th Jul 2026543 AMAQI
5th Jul 2026654 AMAQI
24°C21/28°C
5th Jul 2026675 AMAQI
5th Jul 2026616 AMAQI
5th Jul 2026687 AMAQI
5th Jul 2026698 AMAQI
5th Jul 2026579 AMAQI
5th Jul 20266010 AMAQI
5th Jul 20264611 AMAQI
5th Jul 20264212 PMAQI
5th Jul 2026441 PMAQI
5th Jul 2026422 PMAQI
5th Jul 2026463 PMAQI
5th Jul 2026444 PMAQI
5th Jul 2026475 PMAQI
5th Jul 2026476 PMAQI
5th Jul 2026497 PMAQI
5th Jul 2026538 PMAQI
5th Jul 2026549 PMAQI
5th Jul 20265310 PMAQI
5th Jul 20265411 PMAQI
6th Jul 20265312 AMAQI
6th Jul 2026581 AMAQI
6th Jul 2026592 AMAQI
6th Jul 2026593 AMAQI
6th Jul 2026574 AMAQI
22°C18/30°C
6th Jul 2026535 AMAQI
6th Jul 2026426 AMAQI
6th Jul 2026327 AMAQI
6th Jul 2026298 AMAQI
6th Jul 2026309 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20263611 AMAQI
6th Jul 20263812 PMAQI
6th Jul 2026431 PMAQI
6th Jul 2026452 PMAQI
6th Jul 2026513 PMAQI
6th Jul 2026554 PMAQI
6th Jul 2026555 PMAQI
6th Jul 2026466 PMAQI
6th Jul 2026467 PMAQI
6th Jul 2026278 PMAQI
6th Jul 2026269 PMAQI
6th Jul 20263110 PMAQI
6th Jul 20262711 PMAQI
7th Jul 20263412 AMAQI
7th Jul 2026431 AMAQI
7th Jul 2026462 AMAQI
7th Jul 2026513 AMAQI
7th Jul 2026544 AMAQI
23°C15/30°C
7th Jul 2026585 AMAQI
7th Jul 2026386 AMAQI
7th Jul 2026367 AMAQI
7th Jul 2026308 AMAQI
7th Jul 2026309 AMAQI
7th Jul 20262810 AMAQI
7th Jul 20263211 AMAQI
7th Jul 20263612 PMAQI
7th Jul 2026321 PMAQI
7th Jul 2026322 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026304 PMAQI
7th Jul 2026305 PMAQI
7th Jul 2026306 PMAQI
7th Jul 2026317 PMAQI
7th Jul 2026308 PMAQI
7th Jul 2026279 PMAQI
7th Jul 20262610 PMAQI
7th Jul 20262611 PMAQI
8th Jul 20262612 AMAQI
8th Jul 2026281 AMAQI
8th Jul 2026302 AMAQI
8th Jul 2026303 AMAQI
8th Jul 2026334 AMAQI
23°C18/30°C
8th Jul 2026295 AMAQI
8th Jul 2026296 AMAQI
8th Jul 2026277 AMAQI
8th Jul 2026248 AMAQI
8th Jul 2026249 AMAQI
8th Jul 20262710 AMAQI
8th Jul 20263311 AMAQI
8th Jul 20263012 PMAQI
8th Jul 2026321 PMAQI
8th Jul 2026322 PMAQI
8th Jul 2026303 PMAQI
8th Jul 2026284 PMAQI
8th Jul 2026305 PMAQI
8th Jul 2026426 PMAQI
8th Jul 2026407 PMAQI
8th Jul 2026348 PMAQI
8th Jul 2026339 PMAQI
8th Jul 20264010 PMAQI
8th Jul 20264411 PMAQI
9th Jul 20264012 AMAQI
9th Jul 2026441 AMAQI
9th Jul 2026492 AMAQI
9th Jul 2026543 AMAQI
9th Jul 2026524 AMAQI
24°C15/33°C
9th Jul 2026585 AMAQI
9th Jul 2026606 AMAQI
9th Jul 2026647 AMAQI
9th Jul 2026558 AMAQI
9th Jul 2026549 AMAQI
9th Jul 20265010 AMAQI
9th Jul 20264111 AMAQI
9th Jul 20264212 PMAQI
9th Jul 2026421 PMAQI
9th Jul 2026362 PMAQI
9th Jul 2026283 PMAQI
9th Jul 2026334 PMAQI
9th Jul 2026335 PMAQI
9th Jul 2026336 PMAQI
9th Jul 2026337 PMAQI
9th Jul 2026318 PMAQI
9th Jul 2026359 PMAQI
9th Jul 20263810 PMAQI
9th Jul 20263611 PMAQI
10th Jul 20262712 AMAQI
10th Jul 2026251 AMAQI
10th Jul 2026252 AMAQI
10th Jul 2026283 AMAQI
10th Jul 2026324 AMAQI
24°C17/29°C
10th Jul 2026505 AMAQI
10th Jul 2026366 AMAQI
10th Jul 2026327 AMAQI
10th Jul 2026348 AMAQI
10th Jul 2026379 AMAQI
10th Jul 20263610 AMAQI
10th Jul 20263611 AMAQI
10th Jul 20263412 PMAQI
10th Jul 2026331 PMAQI
10th Jul 2026402 PMAQI
10th Jul 2026513 PMAQI
10th Jul 2026344 PMAQI
10th Jul 2026345 PMAQI
10th Jul 2026346 PMAQI
10th Jul 2026367 PMAQI
10th Jul 2026378 PMAQI
10th Jul 2026389 PMAQI
10th Jul 20263610 PMAQI
10th Jul 20264011 PMAQI
11th Jul 20264812 AMAQI
11th Jul 2026521 AMAQI
11th Jul 2026532 AMAQI
11th Jul 2026563 AMAQI
11th Jul 2026624 AMAQI
23°C18/29°C
11th Jul 2026595 AMAQI
11th Jul 2026646 AMAQI
11th Jul 2026627 AMAQI
11th Jul 2026628 AMAQI
11th Jul 2026629 AMAQI
11th Jul 20265810 AMAQI
11th Jul 20265611 AMAQI
11th Jul 20265012 PMAQI
11th Jul 2026601 PMAQI
11th Jul 2026622 PMAQI
11th Jul 2026553 PMAQI
11th Jul 2026554 PMAQI
11th Jul 2026585 PMAQI
11th Jul 2026566 PMAQI
11th Jul 2026637 PMAQI
11th Jul 2026708 PMAQI
11th Jul 2026709 PMAQI
11th Jul 20267310 PMAQI
11th Jul 20267211 PMAQI
12th Jul 20266812 AMAQI
12th Jul 2026681 AMAQI
12th Jul 2026752 AMAQI
12th Jul 2026773 AMAQI
12th Jul 2026754 AMAQI
22°C16/29°C
12th Jul 2026765 AMAQI
12th Jul 2026786 AMAQI
12th Jul 2026757 AMAQI
12th Jul 2026728 AMAQI
12th Jul 2026549 AMAQI
12th Jul 20263810 AMAQI
12th Jul 20264911 AMAQI
12th Jul 20265812 PMAQI
12th Jul 2026601 PMAQI
12th Jul 2026622 PMAQI
12th Jul 2026623 PMAQI
12th Jul 2026584 PMAQI
12th Jul 2026595 PMAQI
12th Jul 2026626 PMAQI
12th Jul 2026757 PMAQI
12th Jul 2026858 PMAQI
12th Jul 2026909 PMAQI
12th Jul 20268010 PMAQI
12th Jul 20267711 PMAQI
13th Jul 20268312 AMAQI
13th Jul 2026821 AMAQI
13th Jul 2026802 AMAQI
13th Jul 2026823 AMAQI
13th Jul 2026844 AMAQI
22°C13/31°C
13th Jul 2026785 AMAQI
13th Jul 2026846 AMAQI
13th Jul 2026787 AMAQI
13th Jul 2026728 AMAQI
13th Jul 2026649 AMAQI
13th Jul 20265810 AMAQI
13th Jul 20265811 AMAQI
13th Jul 20265712 PMAQI
13th Jul 2026601 PMAQI
13th Jul 2026572 PMAQI
13th Jul 2026593 PMAQI
13th Jul 2026564 PMAQI
13th Jul 2026565 PMAQI
13th Jul 2026516 PMAQI
13th Jul 2026457 PMAQI
13th Jul 2026388 PMAQI
13th Jul 2026479 PMAQI
13th Jul 20264810 PMAQI
13th Jul 20265911 PMAQI
14th Jul 20266312 AMAQI
14th Jul 2026641 AMAQI
14th Jul 2026662 AMAQI
14th Jul 2026663 AMAQI
14th Jul 2026644 AMAQI
23°C13/34°C
14th Jul 2026695 AMAQI
14th Jul 2026646 AMAQI
14th Jul 2026607 AMAQI
14th Jul 2026588 AMAQI
14th Jul 2026579 AMAQI
14th Jul 20265410 AMAQI
14th Jul 20265611 AMAQI
14th Jul 20265212 PMAQI
14th Jul 2026521 PMAQI
14th Jul 2026482 PMAQI
14th Jul 2026423 PMAQI
14th Jul 2026364 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026366 PMAQI
14th Jul 2026347 PMAQI
14th Jul 2026398 PMAQI
14th Jul 2026349 PMAQI
14th Jul 20263810 PMAQI
14th Jul 20264811 PMAQI
15th Jul 20264112 AMAQI
15th Jul 2026381 AMAQI
15th Jul 2026382 AMAQI
15th Jul 2026313 AMAQI
15th Jul 2026334 AMAQI
28°C19/37°C
15th Jul 2026425 AMAQI
15th Jul 2026536 AMAQI
15th Jul 2026707 AMAQI
15th Jul 20261328 AMAQI
15th Jul 20261789 AMAQI
15th Jul 202619110 AMAQI
15th Jul 202622711 AMAQI
15th Jul 202625912 PMAQI
15th Jul 20263011 PMAQI
15th Jul 20262252 PMAQI
15th Jul 20261963 PMAQI
15th Jul 20261904 PMAQI
15th Jul 20261805 PMAQI
15th Jul 20261786 PMAQI
15th Jul 20261777 PMAQI
15th Jul 20261768 PMAQI
15th Jul 20261689 PMAQI
15th Jul 202616910 PMAQI
15th Jul 202617011 PMAQI
16th Jul 202616212 AMAQI
16th Jul 20261641 AMAQI
16th Jul 20261682 AMAQI
16th Jul 20262003 AMAQI
16th Jul 20262464 AMAQI
26°C19/33°C
16th Jul 20262765 AMAQI
16th Jul 20262866 AMAQI
16th Jul 20262557 AMAQI
16th Jul 20262278 AMAQI
16th Jul 20261869 AMAQI
16th Jul 202618110 AMAQI
16th Jul 202617711 AMAQI
16th Jul 202617512 PMAQI
16th Jul 20261681 PMAQI
16th Jul 20261702 PMAQI
16th Jul 20261713 PMAQI
16th Jul 20261674 PMAQI
16th Jul 20261845 PMAQI
16th Jul 20261806 PMAQI
16th Jul 20261787 PMAQI
16th Jul 20262268 PMAQI
16th Jul 20262729 PMAQI
16th Jul 202629410 PMAQI
16th Jul 202628411 PMAQI
17th Jul 202629012 AMAQI
17th Jul 20262961 AMAQI
17th Jul 20263142 AMAQI
17th Jul 20262603 AMAQI
17th Jul 20262694 AMAQI
22°C17/28°C
17th Jul 20263005 AMAQI
17th Jul 20262726 AMAQI
17th Jul 20262847 AMAQI
17th Jul 20262848 AMAQI
17th Jul 20262529 AMAQI
17th Jul 202619510 AMAQI
17th Jul 202618211 AMAQI
17th Jul 202617412 PMAQI
17th Jul 20261701 PMAQI
17th Jul 20261722 PMAQI
17th Jul 20261683 PMAQI
17th Jul 20261624 PMAQI
17th Jul 20261615 PMAQI
17th Jul 20261606 PMAQI
17th Jul 20261647 PMAQI
17th Jul 20261648 PMAQI
17th Jul 20261679 PMAQI
17th Jul 202616710 PMAQI
17th Jul 202617311 PMAQI
18th Jul 202617512 AMAQI
18th Jul 20261781 AMAQI
18th Jul 20261842 AMAQI
18th Jul 20261763 AMAQI
18th Jul 20261754 AMAQI
23°C14/32°C
18th Jul 20261755 AMAQI
18th Jul 20261746 AMAQI
18th Jul 20261647 AMAQI
18th Jul 20261408 AMAQI
18th Jul 20261309 AMAQI
18th Jul 20268710 AMAQI
18th Jul 20267811 AMAQI
18th Jul 20267012 PMAQI
18th Jul 2026691 PMAQI
18th Jul 2026552 PMAQI
18th Jul 2026703 PMAQI
18th Jul 2026644 PMAQI
18th Jul 2026755 PMAQI
18th Jul 20261216 PMAQI
18th Jul 20261547 PMAQI
18th Jul 20261538 PMAQI
18th Jul 20261569 PMAQI
18th Jul 202615010 PMAQI
18th Jul 20268611 PMAQI
19th Jul 20267812 AMAQI
19th Jul 2026741 AMAQI
19th Jul 2026642 AMAQI
19th Jul 2026603 AMAQI
19th Jul 2026664 AMAQI
23°C17/30°C
19th Jul 2026745 AMAQI
19th Jul 2026896 AMAQI
19th Jul 20261127 AMAQI
19th Jul 20261118 AMAQI
19th Jul 2026949 AMAQI
19th Jul 20266810 AMAQI
19th Jul 20265511 AMAQI
19th Jul 20264612 PMAQI
19th Jul 2026451 PMAQI
19th Jul 2026482 PMAQI
19th Jul 2026413 PMAQI
19th Jul 2026444 PMAQI
19th Jul 2026345 PMAQI
19th Jul 2026286 PMAQI
19th Jul 2026217 PMAQI
19th Jul 2026268 PMAQI
19th Jul 2026269 PMAQI
19th Jul 20262410 PMAQI
19th Jul 20262311 PMAQI
20th Jul 20262712 AMAQI
20th Jul 2026261 AMAQI
20th Jul 2026222 AMAQI
20th Jul 2026203 AMAQI
20th Jul 2026214 AMAQI
19°C13/24°C
20th Jul 2026205 AMAQI
20th Jul 2026336 AMAQI
20th Jul 2026337 AMAQI
20th Jul 2026238 AMAQI
20th Jul 2026219 AMAQI
20th Jul 20262110 AMAQI
20th Jul 20262511 AMAQI
20th Jul 20262312 PMAQI
20th Jul 2026501 PMAQI
20th Jul 2026492 PMAQI
20th Jul 2026603 PMAQI
20th Jul 2026634 PMAQI
20th Jul 2026645 PMAQI
20th Jul 2026646 PMAQI
20th Jul 2026857 PMAQI
20th Jul 2026868 PMAQI
20th Jul 2026999 PMAQI
20th Jul 202610010 PMAQI
21st Jul 20269612 AMAQI
21st Jul 2026991 AMAQI
21st Jul 2026982 AMAQI
21st Jul 20261033 AMAQI
21st Jul 2026964 AMAQI
19°C10/29°C
21st Jul 2026885 AMAQI
21st Jul 2026726 AMAQI
21st Jul 2026567 AMAQI
21st Jul 2026818 AMAQI
21st Jul 2026729 AMAQI
21st Jul 20267010 AMAQI
21st Jul 20266811 AMAQI
21st Jul 20267012 PMAQI
21st Jul 2026801 PMAQI
21st Jul 2026722 PMAQI
21st Jul 2026513 PMAQI
21st Jul 2026384 PMAQI
21st Jul 2026425 PMAQI
21st Jul 2026316 PMAQI
21st Jul 2026227 PMAQI
21st Jul 2026268 PMAQI
21st Jul 2026339 PMAQI
21st Jul 20262610 PMAQI
21st Jul 20262511 PMAQI
22nd Jul 20262412 AMAQI
22nd Jul 2026201 AMAQI
22nd Jul 2026342 AMAQI
22nd Jul 2026303 AMAQI
22nd Jul 2026344 AMAQI
21°C16/26°C
22nd Jul 2026325 AMAQI
22nd Jul 2026336 AMAQI
22nd Jul 2026267 AMAQI
22nd Jul 2026228 AMAQI
22nd Jul 2026229 AMAQI
22nd Jul 20262810 AMAQI
22nd Jul 20262511 AMAQI
22nd Jul 20262312 PMAQI
22nd Jul 2026231 PMAQI
22nd Jul 2026202 PMAQI
22nd Jul 2026223 PMAQI
22nd Jul 2026204 PMAQI
22nd Jul 2026225 PMAQI
22nd Jul 2026226 PMAQI
22nd Jul 2026387 PMAQI
22nd Jul 2026268 PMAQI
22nd Jul 2026269 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20263911 PMAQI
23rd Jul 20263612 AMAQI
23rd Jul 2026281 AMAQI
23rd Jul 2026332 AMAQI
23rd Jul 2026403 AMAQI
23rd Jul 2026324 AMAQI
16°C12/22°C
23rd Jul 2026265 AMAQI
23rd Jul 2026366 AMAQI
23rd Jul 2026447 AMAQI
23rd Jul 2026478 AMAQI
23rd Jul 2026319 AMAQI
23rd Jul 20262710 AMAQI
23rd Jul 20262611 AMAQI
23rd Jul 20262612 PMAQI
23rd Jul 2026261 PMAQI
23rd Jul 2026252 PMAQI
23rd Jul 2026273 PMAQI
23rd Jul 2026294 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026296 PMAQI
23rd Jul 2026247 PMAQI
23rd Jul 2026288 PMAQI
23rd Jul 2026279 PMAQI
23rd Jul 20263110 PMAQI
23rd Jul 20262411 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026231 AMAQI
24th Jul 2026242 AMAQI
24th Jul 2026253 AMAQI
24th Jul 2026244 AMAQI
16°C9/24°C
24th Jul 2026295 AMAQI
24th Jul 2026296 AMAQI
24th Jul 2026267 AMAQI
24th Jul 2026288 AMAQI
24th Jul 2026329 AMAQI
24th Jul 20263610 AMAQI
24th Jul 20263211 AMAQI
24th Jul 20262512 PMAQI
24th Jul 2026271 PMAQI
24th Jul 2026262 PMAQI
24th Jul 2026243 PMAQI
24th Jul 2026264 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026246 PMAQI
24th Jul 2026237 PMAQI
24th Jul 2026248 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20263011 PMAQI
25th Jul 20263812 AMAQI
25th Jul 2026341 AMAQI
25th Jul 2026402 AMAQI
25th Jul 2026363 AMAQI
25th Jul 2026344 AMAQI
19°C10/28°C
25th Jul 2026365 AMAQI
25th Jul 2026316 AMAQI
25th Jul 2026307 AMAQI
25th Jul 2026288 AMAQI
25th Jul 2026269 AMAQI
25th Jul 20262810 AMAQI
25th Jul 20262611 AMAQI
25th Jul 20262812 PMAQI
25th Jul 2026281 PMAQI
25th Jul 2026302 PMAQI
25th Jul 2026303 PMAQI
25th Jul 2026304 PMAQI
25th Jul 2026305 PMAQI
25th Jul 2026306 PMAQI
25th Jul 2026327 PMAQI
25th Jul 2026308 PMAQI
25th Jul 2026309 PMAQI
25th Jul 20263410 PMAQI
25th Jul 20263811 PMAQI
26th Jul 20263612 AMAQI
26th Jul 2026391 AMAQI
26th Jul 2026402 AMAQI
26th Jul 2026403 AMAQI
26th Jul 2026414 AMAQI
20°C13/28°C
26th Jul 2026425 AMAQI
26th Jul 2026446 AMAQI
26th Jul 2026447 AMAQI
26th Jul 2026458 AMAQI
26th Jul 2026469 AMAQI
26th Jul 20264410 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20264112 PMAQI
26th Jul 2026421 PMAQI
26th Jul 2026392 PMAQI
26th Jul 2026423 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026425 PMAQI
26th Jul 2026446 PMAQI
26th Jul 2026397 PMAQI
26th Jul 2026428 PMAQI
26th Jul 2026429 PMAQI
26th Jul 20264010 PMAQI
26th Jul 20264111 PMAQI
27th Jul 20264012 AMAQI
27th Jul 2026411 AMAQI
27th Jul 2026422 AMAQI
27th Jul 2026423 AMAQI
27th Jul 2026434 AMAQI
21°C14/27°C
27th Jul 2026415 AMAQI
27th Jul 2026436 AMAQI
27th Jul 2026437 AMAQI
27th Jul 2026418 AMAQI
27th Jul 2026409 AMAQI
27th Jul 20264110 AMAQI
27th Jul 20264311 AMAQI
27th Jul 20264612 PMAQI
27th Jul 2026501 PMAQI
27th Jul 2026502 PMAQI
27th Jul 2026553 PMAQI
27th Jul 2026604 PMAQI
27th Jul 2026525 PMAQI
27th Jul 2026596 PMAQI
27th Jul 2026567 PMAQI
27th Jul 2026548 PMAQI
27th Jul 2026569 PMAQI
27th Jul 20265710 PMAQI
27th Jul 20265711 PMAQI
28th Jul 20265712 AMAQI
28th Jul 2026581 AMAQI
28th Jul 2026602 AMAQI
28th Jul 2026603 AMAQI
28th Jul 2026604 AMAQI
22°C14/31°C
28th Jul 2026595 AMAQI
28th Jul 2026586 AMAQI
28th Jul 2026587 AMAQI
28th Jul 2026588 AMAQI
28th Jul 2026619 AMAQI
28th Jul 20266010 AMAQI
28th Jul 20265511 AMAQI
28th Jul 20265512 PMAQI
28th Jul 2026551 PMAQI
28th Jul 2026512 PMAQI
28th Jul 2026363 PMAQI
28th Jul 2026444 PMAQI
28th Jul 2026465 PMAQI
28th Jul 2026396 PMAQI
28th Jul 2026407 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026429 PMAQI
28th Jul 20263310 PMAQI
28th Jul 20263611 PMAQI
29th Jul 20263212 AMAQI
29th Jul 2026311 AMAQI
29th Jul 2026292 AMAQI
29th Jul 2026253 AMAQI
29th Jul 2026254 AMAQI
21°C17/26°C
29th Jul 2026245 AMAQI
29th Jul 2026246 AMAQI
29th Jul 2026267 AMAQI
29th Jul 2026228 AMAQI
29th Jul 2026269 AMAQI
29th Jul 20262810 AMAQI
29th Jul 20262611 AMAQI
29th Jul 20262312 PMAQI
29th Jul 2026221 PMAQI
29th Jul 2026202 PMAQI
29th Jul 2026203 PMAQI
29th Jul 2026204 PMAQI
29th Jul 2026205 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026367 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026259 PMAQI
29th Jul 20262210 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20262312 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026272 AMAQI
30th Jul 2026343 AMAQI
30th Jul 2026304 AMAQI
21°C16/28°C
30th Jul 2026265 AMAQI
5 AM30th Jul 2026266 AMAQI
30th Jul 2026267 AMAQI
30th Jul 2026248 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262510 AMAQI
30th Jul 20262911 AMAQI
30th Jul 20263112 PMAQI
30th Jul 2026291 PMAQI
1 PM30th Jul 2026512 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026285 PMAQI
30th Jul 2026236 PMAQI
30th Jul 2026257 PMAQI
30th Jul 2026278 PMAQI
30th Jul 2026619 PMAQI
9 PM30th Jul 20263010 PMAQI
30th Jul 20263311 PMAQI
1 AM
4 AM
21°C13/30°C
Day time
Avg. Highest Time
5 AM - 8 AM
68AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 PM - 6 PM
54AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 68), while the lowest AQI was between 4 PM to 6 PM (Avg. 54).
Night time
Avg. Highest Time
4 AM
66AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
10 PM - 11 PM
61AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 66), while the lowest AQI was between 10 PM to 11 PM (Avg. 61).
2026 Days Vs Air Quality
Guelph, Ontario, Canada
2026
76%
157
21%
44
2%
4
0.9%
2
Total number of days with different AQI categories in last 211 days in 2026 (154 days remaining)
Good
157 DaysModerate
44 DaysPoor
4 DaysUnhealthy
0 DaysSevere
2 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2026, 76% of 211 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Guelph, Ontario, Canada
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
8AQI (US)
8AQI (US)
2nd January 2026
8AQI (US)
8AQI (US)
3rd January 2026
20AQI (US)
20AQI (US)
4th January 2026
15AQI (US)
15AQI (US)
5th January 2026
63AQI (US)
63AQI (US)
6th January 2026
88AQI (US)
88AQI (US)
7th January 2026
59AQI (US)
59AQI (US)
8th January 2026
67AQI (US)
67AQI (US)
9th January 2026
32AQI (US)
32AQI (US)
10th January 2026
23AQI (US)
23AQI (US)
11th January 2026
20AQI (US)
20AQI (US)
12th January 2026
41AQI (US)
41AQI (US)
13th January 2026
53AQI (US)
53AQI (US)
14th January 2026
38AQI (US)
38AQI (US)
15th January 2026
12AQI (US)
12AQI (US)
16th January 2026
34AQI (US)
34AQI (US)
17th January 2026
44AQI (US)
44AQI (US)
18th January 2026
28AQI (US)
28AQI (US)
19th January 2026
32AQI (US)
32AQI (US)
20th January 2026
17AQI (US)
17AQI (US)
21st January 2026
39AQI (US)
39AQI (US)
22nd January 2026
52AQI (US)
52AQI (US)
23rd January 2026
60AQI (US)
60AQI (US)
24th January 2026
48AQI (US)
48AQI (US)
25th January 2026
50AQI (US)
50AQI (US)
26th January 2026
48AQI (US)
48AQI (US)
27th January 2026
44AQI (US)
44AQI (US)
28th January 2026
41AQI (US)
41AQI (US)
29th January 2026
49AQI (US)
49AQI (US)
30th January 2026
58AQI (US)
58AQI (US)
31st January 2026
43AQI (US)
43AQI (US)
1st February 2026
45AQI (US)
45AQI (US)
2nd February 2026
73AQI (US)
73AQI (US)
3rd February 2026
74AQI (US)
74AQI (US)
4th February 2026
44AQI (US)
44AQI (US)
5th February 2026
55AQI (US)
55AQI (US)
6th February 2026
75AQI (US)
75AQI (US)
7th February 2026
39AQI (US)
39AQI (US)
8th February 2026
43AQI (US)
43AQI (US)
9th February 2026
46AQI (US)
46AQI (US)
10th February 2026
48AQI (US)
48AQI (US)
11th February 2026
40AQI (US)
40AQI (US)
12th February 2026
39AQI (US)
39AQI (US)
13th February 2026
52AQI (US)
52AQI (US)
14th February 2026
84AQI (US)
84AQI (US)
15th February 2026
80AQI (US)
80AQI (US)
16th February 2026
102AQI (US)
102AQI (US)
17th February 2026
115AQI (US)
115AQI (US)
18th February 2026
61AQI (US)
61AQI (US)
19th February 2026
46AQI (US)
46AQI (US)
20th February 2026
51AQI (US)
51AQI (US)
21st February 2026
41AQI (US)
41AQI (US)
22nd February 2026
33AQI (US)
33AQI (US)
23rd February 2026
40AQI (US)
40AQI (US)
24th February 2026
42AQI (US)
42AQI (US)
25th February 2026
59AQI (US)
59AQI (US)
26th February 2026
33AQI (US)
33AQI (US)
27th February 2026
72AQI (US)
72AQI (US)
28th February 2026
39AQI (US)
39AQI (US)
1st March 2026
38AQI (US)
38AQI (US)
2nd March 2026
52AQI (US)
52AQI (US)
3rd March 2026
59AQI (US)
59AQI (US)
4th March 2026
94AQI (US)
94AQI (US)
5th March 2026
76AQI (US)
76AQI (US)
6th March 2026
58AQI (US)
58AQI (US)
7th March 2026
78AQI (US)
78AQI (US)
8th March 2026
35AQI (US)
35AQI (US)
9th March 2026
35AQI (US)
35AQI (US)
10th March 2026
58AQI (US)
58AQI (US)
11th March 2026
45AQI (US)
45AQI (US)
12th March 2026
39AQI (US)
39AQI (US)
13th March 2026
43AQI (US)
43AQI (US)
14th March 2026
35AQI (US)
35AQI (US)
15th March 2026
32AQI (US)
32AQI (US)
16th March 2026
38AQI (US)
38AQI (US)
17th March 2026
35AQI (US)
35AQI (US)
18th March 2026
36AQI (US)
36AQI (US)
19th March 2026
63AQI (US)
63AQI (US)
20th March 2026
80AQI (US)
80AQI (US)
21st March 2026
42AQI (US)
42AQI (US)
22nd March 2026
59AQI (US)
59AQI (US)
23rd March 2026
39AQI (US)
39AQI (US)
24th March 2026
35AQI (US)
35AQI (US)
25th March 2026
45AQI (US)
45AQI (US)
26th March 2026
60AQI (US)
60AQI (US)
27th March 2026
29AQI (US)
29AQI (US)
28th March 2026
31AQI (US)
31AQI (US)
29th March 2026
36AQI (US)
36AQI (US)
30th March 2026
42AQI (US)
42AQI (US)
31st March 2026
65AQI (US)
65AQI (US)
1st April 2026
30AQI (US)
30AQI (US)
2nd April 2026
30AQI (US)
30AQI (US)
3rd April 2026
40AQI (US)
40AQI (US)
4th April 2026
29AQI (US)
29AQI (US)
5th April 2026
30AQI (US)
30AQI (US)
6th April 2026
27AQI (US)
27AQI (US)
7th April 2026
27AQI (US)
27AQI (US)
8th April 2026
36AQI (US)
36AQI (US)
9th April 2026
49AQI (US)
49AQI (US)
10th April 2026
34AQI (US)
34AQI (US)
11th April 2026
31AQI (US)
31AQI (US)
12th April 2026
47AQI (US)
47AQI (US)
13th April 2026
47AQI (US)
47AQI (US)
14th April 2026
48AQI (US)
48AQI (US)
15th April 2026
41AQI (US)
41AQI (US)
16th April 2026
49AQI (US)
49AQI (US)
17th April 2026
18th April 2026
40AQI (US)
40AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
28AQI (US)
28AQI (US)
21st April 2026
33AQI (US)
33AQI (US)
22nd April 2026
23rd April 2026
37AQI (US)
37AQI (US)
24th April 2026
27AQI (US)
27AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
27AQI (US)
27AQI (US)
28th April 2026
30AQI (US)
30AQI (US)
29th April 2026
28AQI (US)
28AQI (US)
30th April 2026
26AQI (US)
26AQI (US)
1st May 2026
26AQI (US)
26AQI (US)
2nd May 2026
24AQI (US)
24AQI (US)
3rd May 2026
30AQI (US)
30AQI (US)
4th May 2026
32AQI (US)
32AQI (US)
5th May 2026
40AQI (US)
40AQI (US)
6th May 2026
38AQI (US)
38AQI (US)
7th May 2026
27AQI (US)
27AQI (US)
8th May 2026
33AQI (US)
33AQI (US)
9th May 2026
10th May 2026
31AQI (US)
31AQI (US)
11th May 2026
27AQI (US)
27AQI (US)
12th May 2026
28AQI (US)
28AQI (US)
13th May 2026
42AQI (US)
42AQI (US)
14th May 2026
22AQI (US)
22AQI (US)
15th May 2026
41AQI (US)
41AQI (US)
16th May 2026
56AQI (US)
56AQI (US)
17th May 2026
66AQI (US)
66AQI (US)
18th May 2026
62AQI (US)
62AQI (US)
19th May 2026
45AQI (US)
45AQI (US)
20th May 2026
49AQI (US)
49AQI (US)
21st May 2026
45AQI (US)
45AQI (US)
22nd May 2026
44AQI (US)
44AQI (US)
23rd May 2026
52AQI (US)
52AQI (US)
24th May 2026
40AQI (US)
40AQI (US)
25th May 2026
44AQI (US)
44AQI (US)
26th May 2026
32AQI (US)
32AQI (US)
27th May 2026
30AQI (US)
30AQI (US)
28th May 2026
28AQI (US)
28AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
28AQI (US)
28AQI (US)
31st May 2026
32AQI (US)
32AQI (US)
1st June 2026
31AQI (US)
31AQI (US)
2nd June 2026
32AQI (US)
32AQI (US)
3rd June 2026
31AQI (US)
31AQI (US)
4th June 2026
29AQI (US)
29AQI (US)
5th June 2026
43AQI (US)
43AQI (US)
6th June 2026
45AQI (US)
45AQI (US)
7th June 2026
36AQI (US)
36AQI (US)
8th June 2026
29AQI (US)
29AQI (US)
9th June 2026
48AQI (US)
48AQI (US)
10th June 2026
44AQI (US)
44AQI (US)
11th June 2026
38AQI (US)
38AQI (US)
12th June 2026
28AQI (US)
28AQI (US)
13th June 2026
25AQI (US)
25AQI (US)
14th June 2026
27AQI (US)
27AQI (US)
15th June 2026
26AQI (US)
26AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
31AQI (US)
31AQI (US)
18th June 2026
32AQI (US)
32AQI (US)
19th June 2026
25AQI (US)
25AQI (US)
20th June 2026
25AQI (US)
25AQI (US)
21st June 2026
23AQI (US)
23AQI (US)
22nd June 2026
26AQI (US)
26AQI (US)
23rd June 2026
26AQI (US)
26AQI (US)
24th June 2026
24AQI (US)
24AQI (US)
25th June 2026
38AQI (US)
38AQI (US)
26th June 2026
34AQI (US)
34AQI (US)
27th June 2026
38AQI (US)
38AQI (US)
28th June 2026
37AQI (US)
37AQI (US)
29th June 2026
42AQI (US)
42AQI (US)
30th June 2026
57AQI (US)
57AQI (US)
1st July 2026
53AQI (US)
53AQI (US)
2nd July 2026
47AQI (US)
47AQI (US)
3rd July 2026
38AQI (US)
38AQI (US)
4th July 2026
38AQI (US)
38AQI (US)
5th July 2026
52AQI (US)
52AQI (US)
6th July 2026
43AQI (US)
43AQI (US)
7th July 2026
35AQI (US)
35AQI (US)
8th July 2026
32AQI (US)
32AQI (US)
9th July 2026
43AQI (US)
43AQI (US)
10th July 2026
35AQI (US)
35AQI (US)
11th July 2026
60AQI (US)
60AQI (US)
12th July 2026
68AQI (US)
68AQI (US)
13th July 2026
64AQI (US)
64AQI (US)
14th July 2026
52AQI (US)
52AQI (US)
15th July 2026
144AQI (US)
144AQI (US)
16th July 2026
208AQI (US)
208AQI (US)
17th July 2026
216AQI (US)
216AQI (US)
18th July 2026
127AQI (US)
127AQI (US)
19th July 2026
56AQI (US)
56AQI (US)
20th July 2026
45AQI (US)
45AQI (US)
21st July 2026
63AQI (US)
63AQI (US)
22nd July 2026
26AQI (US)
26AQI (US)
23rd July 2026
30AQI (US)
30AQI (US)
24th July 2026
26AQI (US)
26AQI (US)
25th July 2026
32AQI (US)
32AQI (US)
26th July 2026
42AQI (US)
42AQI (US)
27th July 2026
48AQI (US)
48AQI (US)
28th July 2026
50AQI (US)
50AQI (US)
29th July 2026
25AQI (US)
25AQI (US)
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
40AQI (US)
56AQI (US)
49AQI (US)
34AQI (US)
37AQI (US)
33AQI (US)
62AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202644AQI (US)
23
8
15
11
2
19
12
28
26
4
29
1
17
8
2
2
157
44
4
2
Highest AQI (US) recorded in
July62AQI (US)
Lowest AQI (US) recorded in
June33AQI (US)
202534AQI (US)
29
2
24
4
29
2
30
31
19
11
26
5
17
12
2
28
2
28
3
26
4
24
7
311
52
2
Highest AQI (US) recorded in
August48AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
202432AQI (US)
26
5
26
3
31
30
31
28
30
1
24
7
27
3
29
2
30
30
1
342
22
Highest AQI (US) recorded in
January37AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
202341AQI (US)
26
5
23
5
28
3
24
6
29
2
10
15
5
21
10
21
10
29
1
28
3
26
3
25
6
290
69
5
Highest AQI (US) recorded in
June68AQI (US)
Lowest AQI (US) recorded in
October31AQI (US)
202235AQI (US)
28
2
20
1
26
5
30
31
26
4
22
2
1
27
1
28
3
20
10
27
4
286
32
Highest AQI (US) recorded in
November43AQI (US)
Lowest AQI (US) recorded in
August19AQI (US)
202136AQI (US)
23
6
25
3
26
5
27
3
23
6
25
5
24
7
26
5
27
2
1
29
2
26
4
27
4
308
52
1
Highest AQI (US) recorded in
July40AQI (US)
Lowest AQI (US) recorded in
October30AQI (US)
202033AQI (US)
11
2
21
18
26
4
29
2
29
2
26
4
30
1
26
4
24
7
240
26
Highest AQI (US) recorded in
June37AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2026(Avg.)
44AQI (US)Least Polluted Year Recorded
2024(Avg.)
32AQI (US)Guelph's annual 2026 AQI (US) (44) shows an average percentage change of 25.9% (worsened AQI (US)) compared to previous years: 2020 (33), 2021 (36), 2022 (35), 2023 (41), 2024 (32), 2025 (34).
