Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Barrie, 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+

October Air Quality Analysis

Barrie, Ontario, Canada

2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Oct 2025
69AQI
Lowest AQI recorded on
23rd Oct 2025
14AQI

Same Day Analysis (2nd October):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2026

Barrie, Ontario, Canada

AQI
Day
Night
.

7 AM2nd Oct 2026

7 PM

6 AM3rd Oct 2026

Day time
Avg. Highest Time
7AM2nd Oct

54AQI

Avg. Lowest Time
2PM2nd Oct

21AQI

Night time
Avg. Highest Time
6AM3rd Oct

54AQI

Avg. Lowest Time
1AM3rd Oct

21AQI

In the last 24 hours,

Barrie's AQI reached its highest point of 54 at 7 AM during the Day, while the lowest point, 21, was recorded at 1 AM during the Night between 2nd Oct and 3rd Oct 2026.

Day & Night AQI Trend : Sep - Oct 2026

Barrie, Ontario, Canada

SepOct
04th - 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 - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Sep 2026497 AMAQI
4th Sep 2026348 AMAQI
4th Sep 2026649 AMAQI
4th Sep 20263510 AMAQI
4th Sep 20262811 AMAQI
4th Sep 20262812 PMAQI
4th Sep 2026281 PMAQI
4th Sep 2026282 PMAQI
4th Sep 2026383 PMAQI
4th Sep 2026294 PMAQI
4th Sep 2026265 PMAQI
4th Sep 2026246 PMAQI
4th Sep 2026257 PMAQI
4th Sep 2026298 PMAQI
4th Sep 2026299 PMAQI
4th Sep 20263810 PMAQI
4th Sep 20263611 PMAQI
5th Sep 20262812 AMAQI
5th Sep 2026271 AMAQI
5th Sep 2026482 AMAQI
5th Sep 2026483 AMAQI
5th Sep 20261104 AMAQI
5th Sep 2026935 AMAQI
5th Sep 2026846 AMAQI

18°C14/23°C

5th Sep 2026477 AMAQI
5th Sep 2026368 AMAQI
5th Sep 2026259 AMAQI
5th Sep 20262610 AMAQI
5th Sep 20263011 AMAQI
5th Sep 20263012 PMAQI
5th Sep 2026271 PMAQI
5th Sep 2026302 PMAQI
5th Sep 2026303 PMAQI
5th Sep 2026264 PMAQI
5th Sep 2026245 PMAQI
5th Sep 2026406 PMAQI
5th Sep 2026357 PMAQI
5th Sep 2026298 PMAQI
5th Sep 2026329 PMAQI
5th Sep 20262410 PMAQI
5th Sep 20262911 PMAQI
6th Sep 20262912 AMAQI
6th Sep 2026261 AMAQI
6th Sep 2026282 AMAQI
6th Sep 2026243 AMAQI
6th Sep 2026264 AMAQI
6th Sep 2026235 AMAQI
6th Sep 2026316 AMAQI

18°C13/22°C

6th Sep 2026247 AMAQI
6th Sep 2026348 AMAQI
6th Sep 2026289 AMAQI
6th Sep 20264410 AMAQI
6th Sep 20264211 AMAQI
6th Sep 20263012 PMAQI
6th Sep 2026321 PMAQI
6th Sep 2026382 PMAQI
6th Sep 2026303 PMAQI
6th Sep 2026244 PMAQI
6th Sep 2026385 PMAQI
6th Sep 20261046 PMAQI
6th Sep 2026267 PMAQI
6th Sep 2026248 PMAQI
6th Sep 2026309 PMAQI
6th Sep 20264210 PMAQI
6th Sep 20267111 PMAQI
7th Sep 20266312 AMAQI
7th Sep 2026741 AMAQI
7th Sep 2026662 AMAQI
7th Sep 2026583 AMAQI
7th Sep 2026644 AMAQI
7th Sep 2026335 AMAQI
7th Sep 2026366 AMAQI

18°C14/25°C

7th Sep 2026347 AMAQI
7th Sep 2026428 AMAQI
7th Sep 2026329 AMAQI
7th Sep 20262510 AMAQI
7th Sep 20262811 AMAQI
7th Sep 20263212 PMAQI
7th Sep 2026361 PMAQI
7th Sep 2026252 PMAQI
7th Sep 2026293 PMAQI
7th Sep 2026144 PMAQI
7th Sep 2026165 PMAQI
7th Sep 2026246 PMAQI
7th Sep 2026207 PMAQI
7th Sep 2026448 PMAQI
7th Sep 2026309 PMAQI
7th Sep 20264010 PMAQI
7th Sep 20263111 PMAQI
8th Sep 20263812 AMAQI
8th Sep 2026621 AMAQI
8th Sep 2026362 AMAQI
8th Sep 2026343 AMAQI
8th Sep 2026544 AMAQI
8th Sep 2026405 AMAQI
8th Sep 2026286 AMAQI

18°C12/25°C

8th Sep 2026467 AMAQI
8th Sep 2026628 AMAQI
8th Sep 2026349 AMAQI
8th Sep 20264410 AMAQI
8th Sep 20262811 AMAQI
8th Sep 20262412 PMAQI
8th Sep 2026261 PMAQI
8th Sep 2026262 PMAQI
8th Sep 2026263 PMAQI
8th Sep 2026274 PMAQI
8th Sep 2026285 PMAQI
8th Sep 2026256 PMAQI
8th Sep 2026257 PMAQI
8th Sep 2026388 PMAQI
8th Sep 2026279 PMAQI
8th Sep 20262310 PMAQI
8th Sep 20262211 PMAQI
9th Sep 20262512 AMAQI
9th Sep 2026271 AMAQI
9th Sep 2026232 AMAQI
9th Sep 2026253 AMAQI
9th Sep 2026344 AMAQI
9th Sep 2026295 AMAQI
9th Sep 2026386 AMAQI

19°C13/25°C

9th Sep 2026317 AMAQI
9th Sep 2026488 AMAQI
9th Sep 2026489 AMAQI
9th Sep 20265110 AMAQI
9th Sep 20266711 AMAQI
9th Sep 20267612 PMAQI
9th Sep 2026681 PMAQI
9th Sep 2026592 PMAQI
9th Sep 2026653 PMAQI
9th Sep 2026574 PMAQI
9th Sep 2026595 PMAQI
9th Sep 2026626 PMAQI
9th Sep 2026527 PMAQI
9th Sep 2026548 PMAQI
9th Sep 2026549 PMAQI
9th Sep 20267610 PMAQI
9th Sep 20265011 PMAQI
10th Sep 20264212 AMAQI
10th Sep 2026401 AMAQI
10th Sep 2026422 AMAQI
10th Sep 2026253 AMAQI
10th Sep 2026404 AMAQI
10th Sep 2026245 AMAQI
10th Sep 2026476 AMAQI

21°C18/25°C

10th Sep 2026567 AMAQI
10th Sep 2026328 AMAQI
10th Sep 2026429 AMAQI
10th Sep 20263210 AMAQI
10th Sep 20263811 AMAQI
10th Sep 20263812 PMAQI
10th Sep 2026381 PMAQI
10th Sep 2026302 PMAQI
10th Sep 2026463 PMAQI
10th Sep 2026444 PMAQI
10th Sep 2026365 PMAQI
10th Sep 2026466 PMAQI
10th Sep 2026467 PMAQI
10th Sep 2026248 PMAQI
10th Sep 2026249 PMAQI
10th Sep 20263210 PMAQI
10th Sep 20262411 PMAQI
11th Sep 20265412 AMAQI
11th Sep 2026651 AMAQI
11th Sep 2026332 AMAQI
11th Sep 2026383 AMAQI
11th Sep 2026564 AMAQI
11th Sep 2026765 AMAQI
11th Sep 2026646 AMAQI

18°C14/24°C

11th Sep 2026237 AMAQI
11th Sep 2026278 AMAQI
11th Sep 2026229 AMAQI
11th Sep 20262210 AMAQI
11th Sep 20262611 AMAQI
11th Sep 20262512 PMAQI
11th Sep 2026231 PMAQI
11th Sep 2026292 PMAQI
11th Sep 2026233 PMAQI
11th Sep 2026244 PMAQI
11th Sep 2026235 PMAQI
11th Sep 2026246 PMAQI
11th Sep 2026227 PMAQI
11th Sep 2026278 PMAQI
11th Sep 2026319 PMAQI
11th Sep 20264210 PMAQI
11th Sep 20264711 PMAQI
12th Sep 20264212 AMAQI
12th Sep 2026441 AMAQI
12th Sep 2026402 AMAQI
12th Sep 2026443 AMAQI
12th Sep 2026444 AMAQI
12th Sep 2026495 AMAQI
12th Sep 2026466 AMAQI

16°C10/24°C

12th Sep 2026487 AMAQI
12th Sep 2026468 AMAQI
12th Sep 2026469 AMAQI
12th Sep 20264010 AMAQI
12th Sep 20263411 AMAQI
12th Sep 20263812 PMAQI
12th Sep 2026331 PMAQI
12th Sep 2026252 PMAQI
12th Sep 2026273 PMAQI
12th Sep 2026315 PMAQI
12th Sep 2026476 PMAQI
12th Sep 2026387 PMAQI
12th Sep 20261188 PMAQI
12th Sep 20261259 PMAQI
12th Sep 202610710 PMAQI
12th Sep 20268611 PMAQI
13th Sep 202613012 AMAQI
13th Sep 2026711 AMAQI
13th Sep 2026702 AMAQI
13th Sep 2026723 AMAQI
13th Sep 2026644 AMAQI
13th Sep 2026485 AMAQI
13th Sep 2026536 AMAQI

18°C10/27°C

13th Sep 2026447 AMAQI
13th Sep 2026428 AMAQI
13th Sep 2026509 AMAQI
13th Sep 20264410 AMAQI
13th Sep 20265011 AMAQI
13th Sep 20263012 PMAQI
13th Sep 2026301 PMAQI
13th Sep 2026292 PMAQI
13th Sep 2026603 PMAQI
13th Sep 2026344 PMAQI
13th Sep 2026425 PMAQI
13th Sep 2026216 PMAQI
13th Sep 2026297 PMAQI
13th Sep 2026278 PMAQI
13th Sep 2026279 PMAQI
13th Sep 20262510 PMAQI
13th Sep 20262611 PMAQI
14th Sep 20261912 AMAQI
14th Sep 2026231 AMAQI
14th Sep 2026252 AMAQI
14th Sep 2026223 AMAQI
14th Sep 2026194 AMAQI
14th Sep 2026205 AMAQI
14th Sep 2026206 AMAQI

18°C14/21°C

14th Sep 2026167 AMAQI
14th Sep 2026538 AMAQI
14th Sep 2026269 AMAQI
14th Sep 20262410 AMAQI
14th Sep 20266011 AMAQI
14th Sep 20265612 PMAQI
14th Sep 2026461 PMAQI
14th Sep 2026762 PMAQI
14th Sep 2026543 PMAQI
14th Sep 2026424 PMAQI
14th Sep 2026245 PMAQI
14th Sep 2026216 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026278 PMAQI
14th Sep 2026329 PMAQI
14th Sep 20262710 PMAQI
14th Sep 20263411 PMAQI
15th Sep 20263812 AMAQI
15th Sep 2026301 AMAQI
15th Sep 2026262 AMAQI
15th Sep 2026313 AMAQI
15th Sep 2026274 AMAQI
15th Sep 2026315 AMAQI
15th Sep 2026286 AMAQI

13°C10/16°C

15th Sep 2026367 AMAQI
15th Sep 2026288 AMAQI
15th Sep 2026269 AMAQI
15th Sep 20262910 AMAQI
15th Sep 20263911 AMAQI
15th Sep 20265012 PMAQI
15th Sep 2026501 PMAQI
15th Sep 2026302 PMAQI
15th Sep 2026323 PMAQI
15th Sep 2026234 PMAQI
15th Sep 2026385 PMAQI
15th Sep 2026296 PMAQI
15th Sep 2026237 PMAQI
15th Sep 2026308 PMAQI
15th Sep 2026289 PMAQI
15th Sep 20262810 PMAQI
15th Sep 20262811 PMAQI
16th Sep 20263112 AMAQI
16th Sep 2026311 AMAQI
16th Sep 2026312 AMAQI
16th Sep 2026443 AMAQI
16th Sep 2026464 AMAQI
16th Sep 2026545 AMAQI
16th Sep 2026786 AMAQI

15°C11/22°C

16th Sep 2026427 AMAQI
16th Sep 2026488 AMAQI
16th Sep 2026329 AMAQI
16th Sep 20262810 AMAQI
16th Sep 20262511 AMAQI
16th Sep 20262412 PMAQI
16th Sep 2026301 PMAQI
16th Sep 2026422 PMAQI
16th Sep 2026313 PMAQI
16th Sep 2026404 PMAQI
16th Sep 2026565 PMAQI
16th Sep 2026506 PMAQI
16th Sep 2026517 PMAQI
16th Sep 2026478 PMAQI
16th Sep 2026289 PMAQI
16th Sep 20262510 PMAQI
16th Sep 20263611 PMAQI
17th Sep 20262712 AMAQI
17th Sep 2026651 AMAQI
17th Sep 2026422 AMAQI
17th Sep 2026243 AMAQI
17th Sep 2026694 AMAQI
17th Sep 2026465 AMAQI
17th Sep 2026296 AMAQI

18°C14/21°C

17th Sep 2026347 AMAQI
17th Sep 2026288 AMAQI
17th Sep 2026299 AMAQI
17th Sep 20264410 AMAQI
17th Sep 20263611 AMAQI
17th Sep 20264612 PMAQI
17th Sep 2026421 PMAQI
17th Sep 2026252 PMAQI
17th Sep 2026263 PMAQI
17th Sep 2026284 PMAQI
17th Sep 2026365 PMAQI
17th Sep 2026296 PMAQI
17th Sep 2026287 PMAQI
17th Sep 2026268 PMAQI
17th Sep 2026349 PMAQI
17th Sep 20263410 PMAQI
17th Sep 20262711 PMAQI
18th Sep 20262512 AMAQI
18th Sep 2026341 AMAQI
18th Sep 2026252 AMAQI
18th Sep 2026233 AMAQI
18th Sep 2026214 AMAQI
18th Sep 2026195 AMAQI
18th Sep 2026236 AMAQI

16°C12/22°C

18th Sep 2026227 AMAQI
18th Sep 2026258 AMAQI
18th Sep 2026209 AMAQI
18th Sep 20263610 AMAQI
18th Sep 20264011 AMAQI
18th Sep 20264212 PMAQI
18th Sep 2026441 PMAQI
18th Sep 2026482 PMAQI
18th Sep 2026713 PMAQI
18th Sep 2026504 PMAQI
18th Sep 2026275 PMAQI
18th Sep 2026286 PMAQI
18th Sep 2026287 PMAQI
18th Sep 2026288 PMAQI
18th Sep 2026279 PMAQI
18th Sep 20262610 PMAQI
18th Sep 20263211 PMAQI
19th Sep 20264012 AMAQI
19th Sep 2026361 AMAQI
19th Sep 2026262 AMAQI
19th Sep 2026233 AMAQI
19th Sep 2026264 AMAQI
19th Sep 2026255 AMAQI
19th Sep 2026236 AMAQI

14°C11/18°C

19th Sep 2026247 AMAQI
19th Sep 2026268 AMAQI
19th Sep 2026239 AMAQI
19th Sep 20262810 AMAQI
19th Sep 20262611 AMAQI
19th Sep 20262612 PMAQI
19th Sep 2026281 PMAQI
19th Sep 2026282 PMAQI
19th Sep 2026233 PMAQI
19th Sep 2026204 PMAQI
19th Sep 2026225 PMAQI
19th Sep 2026246 PMAQI
19th Sep 2026267 PMAQI
19th Sep 2026278 PMAQI
19th Sep 20261089 PMAQI
19th Sep 20264610 PMAQI
19th Sep 20264611 PMAQI
20th Sep 20264012 AMAQI
20th Sep 2026281 AMAQI
20th Sep 2026242 AMAQI
20th Sep 2026213 AMAQI
20th Sep 2026244 AMAQI
20th Sep 2026275 AMAQI
20th Sep 2026286 AMAQI

12°C8/17°C

20th Sep 2026287 AMAQI
20th Sep 2026288 AMAQI
20th Sep 2026349 AMAQI
20th Sep 20262610 AMAQI
20th Sep 20263611 AMAQI
20th Sep 20262412 PMAQI
20th Sep 2026261 PMAQI
20th Sep 2026272 PMAQI
20th Sep 2026263 PMAQI
20th Sep 2026304 PMAQI
20th Sep 2026225 PMAQI
20th Sep 2026266 PMAQI
20th Sep 2026287 PMAQI
20th Sep 2026288 PMAQI
20th Sep 2026309 PMAQI
20th Sep 20264010 PMAQI
20th Sep 20262911 PMAQI
21st Sep 20262712 AMAQI
21st Sep 2026241 AMAQI
21st Sep 2026282 AMAQI
21st Sep 2026283 AMAQI
21st Sep 2026284 AMAQI
21st Sep 2026275 AMAQI
21st Sep 2026276 AMAQI

14°C9/19°C

21st Sep 2026267 AMAQI
21st Sep 2026288 AMAQI
21st Sep 2026299 AMAQI
21st Sep 20262610 AMAQI
21st Sep 20263111 AMAQI
21st Sep 20262612 PMAQI
21st Sep 2026481 PMAQI
21st Sep 2026222 PMAQI
21st Sep 2026183 PMAQI
21st Sep 2026214 PMAQI
21st Sep 2026275 PMAQI
21st Sep 2026236 PMAQI
21st Sep 2026287 PMAQI
21st Sep 2026308 PMAQI
21st Sep 2026309 PMAQI
21st Sep 20262910 PMAQI
21st Sep 20262811 PMAQI
22nd Sep 20263212 AMAQI
22nd Sep 2026241 AMAQI
22nd Sep 2026292 AMAQI
22nd Sep 2026263 AMAQI
22nd Sep 2026264 AMAQI
22nd Sep 2026235 AMAQI
22nd Sep 2026246 AMAQI

10°C4/15°C

22nd Sep 2026287 AMAQI
22nd Sep 2026288 AMAQI
22nd Sep 2026269 AMAQI
22nd Sep 20263210 AMAQI
22nd Sep 20263211 AMAQI
22nd Sep 20262612 PMAQI
22nd Sep 2026291 PMAQI
22nd Sep 2026282 PMAQI
22nd Sep 2026283 PMAQI
22nd Sep 2026264 PMAQI
22nd Sep 2026245 PMAQI
22nd Sep 2026226 PMAQI
22nd Sep 2026227 PMAQI
22nd Sep 2026208 PMAQI
22nd Sep 2026229 PMAQI
22nd Sep 20262910 PMAQI
22nd Sep 20263411 PMAQI
23rd Sep 20262812 AMAQI
23rd Sep 2026281 AMAQI
23rd Sep 2026272 AMAQI
23rd Sep 2026243 AMAQI
23rd Sep 2026274 AMAQI
23rd Sep 2026305 AMAQI
23rd Sep 2026306 AMAQI

10°C5/17°C

23rd Sep 2026287 AMAQI
23rd Sep 2026358 AMAQI
23rd Sep 2026389 AMAQI
23rd Sep 20263410 AMAQI
23rd Sep 20263811 AMAQI
23rd Sep 20265212 PMAQI
23rd Sep 2026501 PMAQI
23rd Sep 2026442 PMAQI
23rd Sep 2026223 PMAQI
23rd Sep 2026234 PMAQI
23rd Sep 2026265 PMAQI
23rd Sep 2026226 PMAQI
23rd Sep 2026247 PMAQI
23rd Sep 2026248 PMAQI
23rd Sep 2026269 PMAQI
23rd Sep 20262810 PMAQI
23rd Sep 20262811 PMAQI
24th Sep 20263212 AMAQI
24th Sep 2026291 AMAQI
24th Sep 2026322 AMAQI
24th Sep 2026283 AMAQI
24th Sep 2026244 AMAQI
24th Sep 2026295 AMAQI
24th Sep 2026266 AMAQI

12°C7/19°C

24th Sep 2026267 AMAQI
24th Sep 2026268 AMAQI
24th Sep 2026289 AMAQI
24th Sep 20262710 AMAQI
24th Sep 20263011 AMAQI
24th Sep 20264212 PMAQI
24th Sep 2026501 PMAQI
24th Sep 2026302 PMAQI
24th Sep 2026203 PMAQI
24th Sep 2026224 PMAQI
24th Sep 2026205 PMAQI
24th Sep 2026276 PMAQI
24th Sep 2026227 PMAQI
24th Sep 2026208 PMAQI
24th Sep 2026259 PMAQI
24th Sep 20262510 PMAQI
24th Sep 20265811 PMAQI
25th Sep 20264212 AMAQI
25th Sep 2026341 AMAQI
25th Sep 2026332 AMAQI
25th Sep 2026243 AMAQI
25th Sep 2026404 AMAQI
25th Sep 2026255 AMAQI
25th Sep 2026586 AMAQI

13°C8/20°C

25th Sep 2026427 AMAQI
25th Sep 2026388 AMAQI
25th Sep 2026469 AMAQI
25th Sep 20264610 AMAQI
25th Sep 20264011 AMAQI
25th Sep 20264812 PMAQI
25th Sep 2026291 PMAQI
25th Sep 2026272 PMAQI
25th Sep 2026213 PMAQI
25th Sep 2026204 PMAQI
25th Sep 2026185 PMAQI
25th Sep 2026186 PMAQI
25th Sep 2026177 PMAQI
25th Sep 2026258 PMAQI
25th Sep 2026239 PMAQI
25th Sep 20265510 PMAQI
25th Sep 20264411 PMAQI
26th Sep 20264012 AMAQI
26th Sep 2026231 AMAQI
26th Sep 2026382 AMAQI
26th Sep 2026233 AMAQI
26th Sep 2026364 AMAQI
26th Sep 2026575 AMAQI
26th Sep 2026426 AMAQI

13°C7/20°C

26th Sep 2026427 AMAQI
26th Sep 2026448 AMAQI
26th Sep 2026279 AMAQI
26th Sep 20265210 AMAQI
26th Sep 20264011 AMAQI
26th Sep 20262512 PMAQI
26th Sep 2026251 PMAQI
26th Sep 2026472 PMAQI
26th Sep 2026473 PMAQI
26th Sep 2026294 PMAQI
26th Sep 2026255 PMAQI
26th Sep 2026386 PMAQI
26th Sep 2026217 PMAQI
26th Sep 2026298 PMAQI
26th Sep 2026479 PMAQI
26th Sep 20263610 PMAQI
26th Sep 20263011 PMAQI
27th Sep 20263212 AMAQI
27th Sep 2026231 AMAQI
27th Sep 2026312 AMAQI
27th Sep 2026293 AMAQI
27th Sep 2026274 AMAQI
27th Sep 2026565 AMAQI
27th Sep 2026606 AMAQI

14°C9/22°C

27th Sep 2026627 AMAQI
27th Sep 2026528 AMAQI
27th Sep 2026629 AMAQI
27th Sep 20266210 AMAQI
27th Sep 20264611 AMAQI
27th Sep 20265012 PMAQI
27th Sep 2026541 PMAQI
27th Sep 2026402 PMAQI
27th Sep 2026473 PMAQI
27th Sep 2026604 PMAQI
27th Sep 2026325 PMAQI
27th Sep 2026496 PMAQI
27th Sep 2026347 PMAQI
27th Sep 2026298 PMAQI
27th Sep 2026409 PMAQI
27th Sep 20264410 PMAQI
27th Sep 20262111 PMAQI
28th Sep 20262312 AMAQI
28th Sep 2026211 AMAQI
28th Sep 2026252 AMAQI
28th Sep 2026253 AMAQI
28th Sep 2026254 AMAQI
28th Sep 2026275 AMAQI
28th Sep 2026296 AMAQI

16°C11/23°C

28th Sep 2026387 AMAQI
28th Sep 2026318 AMAQI
28th Sep 2026229 AMAQI
28th Sep 20262510 AMAQI
28th Sep 20262511 AMAQI
28th Sep 20264012 PMAQI
28th Sep 2026271 PMAQI
28th Sep 2026322 PMAQI
28th Sep 2026403 PMAQI
28th Sep 2026224 PMAQI
28th Sep 2026225 PMAQI
28th Sep 2026236 PMAQI
28th Sep 2026307 PMAQI
28th Sep 2026298 PMAQI
28th Sep 2026259 PMAQI
28th Sep 20262710 PMAQI
28th Sep 20262311 PMAQI
29th Sep 20265412 AMAQI
29th Sep 2026421 AMAQI
29th Sep 2026502 AMAQI
29th Sep 2026673 AMAQI
29th Sep 2026484 AMAQI
29th Sep 2026255 AMAQI
29th Sep 2026366 AMAQI

16°C13/22°C

29th Sep 2026447 AMAQI
29th Sep 2026608 AMAQI
29th Sep 2026259 AMAQI
29th Sep 20263110 AMAQI
29th Sep 20262911 AMAQI
29th Sep 20265212 PMAQI
29th Sep 2026341 PMAQI
29th Sep 2026252 PMAQI
29th Sep 2026383 PMAQI
29th Sep 2026384 PMAQI
29th Sep 2026465 PMAQI
29th Sep 2026266 PMAQI
29th Sep 2026277 PMAQI
29th Sep 2026298 PMAQI
29th Sep 2026449 PMAQI
29th Sep 20268210 PMAQI
29th Sep 20263411 PMAQI
30th Sep 20264212 AMAQI
30th Sep 2026441 AMAQI
30th Sep 2026502 AMAQI
30th Sep 2026603 AMAQI
30th Sep 2026724 AMAQI
30th Sep 2026555 AMAQI
30th Sep 2026506 AMAQI

17°C14/22°C

30th Sep 2026557 AMAQI
30th Sep 2026568 AMAQI
30th Sep 2026559 AMAQI
30th Sep 20265310 AMAQI
30th Sep 20264411 AMAQI
30th Sep 20265112 PMAQI
30th Sep 2026381 PMAQI
30th Sep 2026442 PMAQI
30th Sep 2026463 PMAQI
30th Sep 2026424 PMAQI
30th Sep 2026465 PMAQI
30th Sep 2026506 PMAQI
30th Sep 2026517 PMAQI
30th Sep 2026508 PMAQI
30th Sep 2026529 PMAQI
30th Sep 20263610 PMAQI
30th Sep 20263611 PMAQI
1st Oct 20264012 AMAQI
1st Oct 2026331 AMAQI
1st Oct 2026312 AMAQI
1st Oct 2026333 AMAQI
1st Oct 2026364 AMAQI
1st Oct 2026605 AMAQI
1st Oct 2026636 AMAQI

18°C14/23°C

1st Oct 2026607 AMAQI
1st Oct 2026648 AMAQI
1st Oct 2026599 AMAQI
1st Oct 20265610 AMAQI
1st Oct 20265511 AMAQI
1st Oct 20265412 PMAQI
1st Oct 2026511 PMAQI
1st Oct 2026522 PMAQI
1st Oct 2026493 PMAQI
1st Oct 2026524 PMAQI
1st Oct 2026515 PMAQI
1st Oct 2026466 PMAQI
1st Oct 2026467 PMAQI
1st Oct 2026548 PMAQI
1st Oct 2026589 PMAQI
1st Oct 20266010 PMAQI
1st Oct 20265111 PMAQI
2nd Oct 20265112 AMAQI
2nd Oct 2026501 AMAQI
2nd Oct 2026482 AMAQI
2nd Oct 2026233 AMAQI
2nd Oct 2026404 AMAQI
2nd Oct 2026385 AMAQI
2nd Oct 2026236 AMAQI

18°C16/20°C

2nd Oct 2026547 AMAQI
2nd Oct 2026278 AMAQI
2nd Oct 2026509 AMAQI
2nd Oct 20264710 AMAQI
2nd Oct 20262711 AMAQI
2nd Oct 20263712 PMAQI
2nd Oct 2026401 PMAQI
2nd Oct 2026212 PMAQI
2nd Oct 2026223 PMAQI
2nd Oct 2026264 PMAQI
2nd Oct 2026315 PMAQI
2nd Oct 2026246 PMAQI
2nd Oct 2026257 PMAQI
2nd Oct 2026228 PMAQI
2nd Oct 2026249 PMAQI
2nd Oct 20262510 PMAQI
2nd Oct 20262911 PMAQI
3rd Oct 20262212 AMAQI
3rd Oct 2026211 AMAQI
3rd Oct 2026242 AMAQI
3rd Oct 2026293 AMAQI
3rd Oct 2026364 AMAQI
3rd Oct 2026255 AMAQI
3rd Oct 2026546 AMAQI

14°C10/17°C

3rd Oct 2026537 AMAQI
7 AM
3rd Oct 2026508 AMAQI
3rd Oct 2026519 AMAQI
3rd Oct 20264910 AMAQI
3rd Oct 20265011 AMAQI
3rd Oct 20265012 PMAQI
3rd Oct 2026231 PMAQI
1 PM
3rd Oct 2026242 PMAQI
3rd Oct 2026223 PMAQI
3rd Oct 2026244 PMAQI
3rd Oct 2026295 PMAQI
3rd Oct 2026206 PMAQI
3rd Oct 2026427 PMAQI
7 PM
3rd Oct 2026228 PMAQI
3rd Oct 2026239 PMAQI
3rd Oct 20262510 PMAQI
3rd Oct 20263211 PMAQI
1 AM
6 AM

11°C7/17°C

Day time
Avg. Highest Time
7 AM - 8 AM

39AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM

31AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 8 AM (Avg. 39), while the lowest AQI was between 7 PM to 7 PM (Avg. 31).
Night time
Avg. Highest Time
6 AM

42AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 AM (Avg. 42), while the lowest AQI was between 3 AM to 3 AM (Avg. 33).

2026 Days Vs Air Quality

Barrie, Ontario, Canada

2026

85%

231

14%

37

0.7%

2

0.7%

2

Total number of days with different AQI categories in last 276 days in 2026 (89 days remaining)

Good
231 Days
Moderate
37 Days
Poor
2 Days
Unhealthy
2 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 85%

Health Risk Level:

Low

In 2026, 85% of 276 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

Barrie, 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
9AQI (US)
2nd January 2026
9AQI (US)
3rd January 2026
10AQI (US)
4th January 2026
39AQI (US)
5th January 2026
47AQI (US)
6th January 2026
75AQI (US)
7th January 2026
65AQI (US)
8th January 2026
63AQI (US)
9th January 2026
35AQI (US)
10th January 2026
15AQI (US)
11th January 2026
18AQI (US)
12th January 2026
31AQI (US)
13th January 2026
44AQI (US)
14th January 2026
36AQI (US)
15th January 2026
11AQI (US)
16th January 2026
26AQI (US)
17th January 2026
45AQI (US)
18th January 2026
30AQI (US)
19th January 2026
37AQI (US)
20th January 2026
17AQI (US)
21st January 2026
36AQI (US)
22nd January 2026
59AQI (US)
23rd January 2026
61AQI (US)
24th January 2026
47AQI (US)
25th January 2026
50AQI (US)
26th January 2026
48AQI (US)
27th January 2026
39AQI (US)
28th January 2026
43AQI (US)
29th January 2026
49AQI (US)
30th January 2026
58AQI (US)
31st January 2026
46AQI (US)
1st February 2026
48AQI (US)
2nd February 2026
52AQI (US)
3rd February 2026
49AQI (US)
4th February 2026
45AQI (US)
5th February 2026
53AQI (US)
6th February 2026
51AQI (US)
7th February 2026
40AQI (US)
8th February 2026
44AQI (US)
9th February 2026
49AQI (US)
10th February 2026
46AQI (US)
11th February 2026
40AQI (US)
12th February 2026
40AQI (US)
13th February 2026
48AQI (US)
14th February 2026
50AQI (US)
15th February 2026
43AQI (US)
16th February 2026
48AQI (US)
17th February 2026
51AQI (US)
18th February 2026
44AQI (US)
19th February 2026
42AQI (US)
20th February 2026
40AQI (US)
21st February 2026
36AQI (US)
22nd February 2026
36AQI (US)
23rd February 2026
39AQI (US)
24th February 2026
47AQI (US)
25th February 2026
47AQI (US)
26th February 2026
37AQI (US)
27th February 2026
40AQI (US)
28th February 2026
40AQI (US)
1st March 2026
40AQI (US)
2nd March 2026
61AQI (US)
3rd March 2026
47AQI (US)
4th March 2026
49AQI (US)
5th March 2026
43AQI (US)
6th March 2026
36AQI (US)
7th March 2026
45AQI (US)
8th March 2026
43AQI (US)
9th March 2026
40AQI (US)
10th March 2026
38AQI (US)
11th March 2026
46AQI (US)
12th March 2026
41AQI (US)
13th March 2026
44AQI (US)
14th March 2026
36AQI (US)
15th March 2026
32AQI (US)
16th March 2026
38AQI (US)
17th March 2026
34AQI (US)
18th March 2026
33AQI (US)
19th March 2026
39AQI (US)
20th March 2026
45AQI (US)
21st March 2026
41AQI (US)
22nd March 2026
38AQI (US)
23rd March 2026
41AQI (US)
24th March 2026
37AQI (US)
25th March 2026
38AQI (US)
26th March 2026
37AQI (US)
27th March 2026
29AQI (US)
28th March 2026
30AQI (US)
29th March 2026
30AQI (US)
30th March 2026
37AQI (US)
31st March 2026
59AQI (US)
1st April 2026
34AQI (US)
2nd April 2026
31AQI (US)
3rd April 2026
46AQI (US)
4th April 2026
29AQI (US)
5th April 2026
33AQI (US)
6th April 2026
29AQI (US)
7th April 2026
28AQI (US)
8th April 2026
31AQI (US)
9th April 2026
43AQI (US)
10th April 2026
31AQI (US)
11th April 2026
33AQI (US)
12th April 2026
37AQI (US)
13th April 2026
48AQI (US)
14th April 2026
49AQI (US)
15th April 2026
55AQI (US)
16th April 2026
51AQI (US)
17th April 2026
18th April 2026
30AQI (US)
19th April 2026
42AQI (US)
20th April 2026
28AQI (US)
21st April 2026
31AQI (US)
22nd April 2026
23rd April 2026
43AQI (US)
24th April 2026
27AQI (US)
25th April 2026
30AQI (US)
26th April 2026
35AQI (US)
27th April 2026
31AQI (US)
28th April 2026
35AQI (US)
29th April 2026
26AQI (US)
30th April 2026
28AQI (US)
1st May 2026
27AQI (US)
2nd May 2026
24AQI (US)
3rd May 2026
32AQI (US)
4th May 2026
34AQI (US)
5th May 2026
36AQI (US)
6th May 2026
33AQI (US)
7th May 2026
28AQI (US)
8th May 2026
31AQI (US)
9th May 2026
10th May 2026
32AQI (US)
11th May 2026
28AQI (US)
12th May 2026
29AQI (US)
13th May 2026
46AQI (US)
14th May 2026
28AQI (US)
15th May 2026
43AQI (US)
16th May 2026
49AQI (US)
17th May 2026
79AQI (US)
18th May 2026
61AQI (US)
19th May 2026
46AQI (US)
20th May 2026
51AQI (US)
21st May 2026
45AQI (US)
22nd May 2026
44AQI (US)
23rd May 2026
50AQI (US)
24th May 2026
44AQI (US)
25th May 2026
47AQI (US)
26th May 2026
38AQI (US)
27th May 2026
32AQI (US)
28th May 2026
28AQI (US)
29th May 2026
26AQI (US)
30th May 2026
28AQI (US)
31st May 2026
34AQI (US)
1st June 2026
31AQI (US)
2nd June 2026
36AQI (US)
3rd June 2026
32AQI (US)
4th June 2026
29AQI (US)
5th June 2026
40AQI (US)
6th June 2026
56AQI (US)
7th June 2026
34AQI (US)
8th June 2026
29AQI (US)
9th June 2026
55AQI (US)
10th June 2026
55AQI (US)
11th June 2026
41AQI (US)
12th June 2026
36AQI (US)
13th June 2026
34AQI (US)
14th June 2026
27AQI (US)
15th June 2026
29AQI (US)
16th June 2026
27AQI (US)
17th June 2026
29AQI (US)
18th June 2026
31AQI (US)
19th June 2026
31AQI (US)
20th June 2026
25AQI (US)
21st June 2026
24AQI (US)
22nd June 2026
34AQI (US)
23rd June 2026
27AQI (US)
24th June 2026
26AQI (US)
25th June 2026
34AQI (US)
26th June 2026
50AQI (US)
27th June 2026
59AQI (US)
28th June 2026
45AQI (US)
29th June 2026
47AQI (US)
30th June 2026
58AQI (US)
1st July 2026
57AQI (US)
2nd July 2026
40AQI (US)
3rd July 2026
42AQI (US)
4th July 2026
54AQI (US)
5th July 2026
59AQI (US)
6th July 2026
44AQI (US)
7th July 2026
39AQI (US)
8th July 2026
32AQI (US)
9th July 2026
59AQI (US)
10th July 2026
47AQI (US)
11th July 2026
72AQI (US)
12th July 2026
77AQI (US)
13th July 2026
76AQI (US)
14th July 2026
71AQI (US)
15th July 2026
153AQI (US)
16th July 2026
197AQI (US)
17th July 2026
140AQI (US)
18th July 2026
113AQI (US)
19th July 2026
47AQI (US)
20th July 2026
41AQI (US)
21st July 2026
72AQI (US)
22nd July 2026
30AQI (US)
23rd July 2026
32AQI (US)
24th July 2026
36AQI (US)
25th July 2026
41AQI (US)
26th July 2026
48AQI (US)
27th July 2026
53AQI (US)
28th July 2026
49AQI (US)
29th July 2026
28AQI (US)
30th July 2026
31AQI (US)
31st July 2026
39AQI (US)
1st August 2026
52AQI (US)
2nd August 2026
43AQI (US)
3rd August 2026
29AQI (US)
4th August 2026
27AQI (US)
5th August 2026
36AQI (US)
6th August 2026
47AQI (US)
7th August 2026
50AQI (US)
8th August 2026
51AQI (US)
9th August 2026
30AQI (US)
10th August 2026
48AQI (US)
11th August 2026
37AQI (US)
12th August 2026
42AQI (US)
13th August 2026
38AQI (US)
14th August 2026
41AQI (US)
15th August 2026
37AQI (US)
16th August 2026
37AQI (US)
17th August 2026
32AQI (US)
18th August 2026
35AQI (US)
19th August 2026
35AQI (US)
20th August 2026
40AQI (US)
21st August 2026
43AQI (US)
22nd August 2026
37AQI (US)
23rd August 2026
32AQI (US)
24th August 2026
32AQI (US)
25th August 2026
34AQI (US)
26th August 2026
47AQI (US)
27th August 2026
40AQI (US)
28th August 2026
29AQI (US)
29th August 2026
36AQI (US)
30th August 2026
41AQI (US)
31st August 2026
39AQI (US)
1st September 2026
52AQI (US)
2nd September 2026
39AQI (US)
3rd September 2026
47AQI (US)
4th September 2026
38AQI (US)
5th September 2026
40AQI (US)
6th September 2026
35AQI (US)
7th September 2026
37AQI (US)
8th September 2026
34AQI (US)
9th September 2026
49AQI (US)
10th September 2026
37AQI (US)
11th September 2026
35AQI (US)
12th September 2026
52AQI (US)
13th September 2026
47AQI (US)
14th September 2026
33AQI (US)
15th September 2026
32AQI (US)
16th September 2026
40AQI (US)
17th September 2026
36AQI (US)
18th September 2026
32AQI (US)
19th September 2026
31AQI (US)
20th September 2026
28AQI (US)
21st September 2026
27AQI (US)
22nd September 2026
27AQI (US)
23rd September 2026
31AQI (US)
24th September 2026
29AQI (US)
25th September 2026
34AQI (US)
26th September 2026
36AQI (US)
27th September 2026
43AQI (US)
28th September 2026
27AQI (US)
29th September 2026
41AQI (US)
30th September 2026
49AQI (US)
1st October 2026
51AQI (US)
2nd October 2026
34AQI (US)
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

39AQI (US)

44AQI (US)

40AQI (US)

36AQI (US)

38AQI (US)

37AQI (US)

62AQI (US)

39AQI (US)

37AQI (US)

43AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202641AQI (US)

25
6
24
4
29
2
26
2
27
3
25
5
17
10
2
2
29
2
28
2
1
1
231
37
2
2

Highest AQI (US) recorded in

July

62AQI (US)

Lowest AQI (US) recorded in

April

36AQI (US)

202536AQI (US)

5
30
31
17
13
22
9
18
11
2
30
25
6
27
3
23
8
228
50
2

Highest AQI (US) recorded in

August

48AQI (US)

Lowest AQI (US) recorded in

March

20AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2026(Avg.)
41AQI (US)
Least Polluted Year Recorded
2025(Avg.)
36AQI (US)

Barrie's annual 2026 AQI (US) (41) shows an average percentage change of 13.8% (worsened AQI (US)) compared to previous years: 2025 (36).