Castle Street, Saint John, New Brunswick, 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+
August Air Quality Analysis
Castle Street, Saint John, New Brunswick, Canada
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Aug 2023
65AQILowest AQI recorded on
29th Aug 2024
14AQISame Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Castle Street, Saint John, New Brunswick, Canada
AQI
Day
Night
.
6 AM7th Aug 2025
9 PM
5 AM8th Aug 2025
Day time
Avg. Highest Time
12PM7th Aug
34AQI
Avg. Lowest Time
7AM7th Aug
26AQI
Night time
Avg. Highest Time
3AM8th Aug
47AQI
Avg. Lowest Time
11PM7th Aug
32AQI
In the last 24 hours,
Castle Street's AQI reached its highest point of 47 at 3 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Castle Street, Saint John, New Brunswick, Canada
JulAug
09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th
Day
Night
9th Jul 2025216 AMAQI
9th Jul 2025207 AMAQI
9th Jul 2025208 AMAQI
9th Jul 2025209 AMAQI
9th Jul 20252310 AMAQI
9th Jul 20252211 AMAQI
9th Jul 20252212 PMAQI
9th Jul 2025231 PMAQI
9th Jul 2025232 PMAQI
9th Jul 2025223 PMAQI
9th Jul 2025234 PMAQI
9th Jul 2025245 PMAQI
9th Jul 2025246 PMAQI
9th Jul 2025247 PMAQI
9th Jul 2025238 PMAQI
9th Jul 2025269 PMAQI
9th Jul 20252410 PMAQI
9th Jul 20252411 PMAQI
10th Jul 20252712 AMAQI
10th Jul 2025311 AMAQI
10th Jul 2025362 AMAQI
10th Jul 2025343 AMAQI
10th Jul 2025334 AMAQI
10th Jul 2025345 AMAQI
17°C12/22°C
10th Jul 2025346 AMAQI
10th Jul 2025347 AMAQI
10th Jul 2025388 AMAQI
10th Jul 2025379 AMAQI
10th Jul 20253710 AMAQI
10th Jul 20253411 AMAQI
10th Jul 20253412 PMAQI
10th Jul 2025321 PMAQI
10th Jul 2025322 PMAQI
10th Jul 2025293 PMAQI
10th Jul 2025294 PMAQI
10th Jul 2025315 PMAQI
10th Jul 2025326 PMAQI
10th Jul 2025317 PMAQI
10th Jul 2025318 PMAQI
10th Jul 2025329 PMAQI
10th Jul 20253410 PMAQI
10th Jul 20253211 PMAQI
11th Jul 20253212 AMAQI
11th Jul 2025331 AMAQI
11th Jul 2025322 AMAQI
11th Jul 2025273 AMAQI
11th Jul 2025304 AMAQI
11th Jul 2025275 AMAQI
17°C13/21°C
11th Jul 2025266 AMAQI
11th Jul 2025267 AMAQI
11th Jul 2025268 AMAQI
11th Jul 2025269 AMAQI
11th Jul 20252510 AMAQI
11th Jul 20252511 AMAQI
11th Jul 20252612 PMAQI
11th Jul 2025271 PMAQI
11th Jul 2025252 PMAQI
11th Jul 2025243 PMAQI
11th Jul 2025244 PMAQI
11th Jul 2025265 PMAQI
11th Jul 2025236 PMAQI
11th Jul 2025247 PMAQI
11th Jul 2025258 PMAQI
11th Jul 2025289 PMAQI
11th Jul 20252810 PMAQI
11th Jul 20252811 PMAQI
12th Jul 20252712 AMAQI
12th Jul 2025311 AMAQI
12th Jul 2025292 AMAQI
12th Jul 2025273 AMAQI
12th Jul 2025304 AMAQI
12th Jul 2025445 AMAQI
16°C13/20°C
12th Jul 2025306 AMAQI
12th Jul 2025277 AMAQI
12th Jul 2025288 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20252410 AMAQI
12th Jul 20252511 AMAQI
12th Jul 20252412 PMAQI
12th Jul 2025241 PMAQI
12th Jul 2025222 PMAQI
12th Jul 2025213 PMAQI
12th Jul 2025214 PMAQI
12th Jul 2025245 PMAQI
12th Jul 2025266 PMAQI
12th Jul 2025247 PMAQI
12th Jul 2025228 PMAQI
12th Jul 2025259 PMAQI
12th Jul 20252810 PMAQI
12th Jul 20253211 PMAQI
13th Jul 20252612 AMAQI
13th Jul 2025291 AMAQI
13th Jul 2025262 AMAQI
13th Jul 2025193 AMAQI
13th Jul 2025224 AMAQI
13th Jul 2025175 AMAQI
16°C13/19°C
13th Jul 2025166 AMAQI
13th Jul 2025187 AMAQI
13th Jul 2025188 AMAQI
13th Jul 2025179 AMAQI
13th Jul 20251610 AMAQI
13th Jul 20251711 AMAQI
13th Jul 20251612 PMAQI
13th Jul 2025171 PMAQI
13th Jul 2025162 PMAQI
13th Jul 2025173 PMAQI
13th Jul 2025184 PMAQI
13th Jul 2025205 PMAQI
13th Jul 2025236 PMAQI
13th Jul 2025247 PMAQI
13th Jul 2025268 PMAQI
13th Jul 2025229 PMAQI
13th Jul 20252310 PMAQI
13th Jul 20252811 PMAQI
14th Jul 20252812 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025212 AMAQI
14th Jul 2025183 AMAQI
14th Jul 2025184 AMAQI
14th Jul 2025185 AMAQI
15°C12/18°C
14th Jul 2025176 AMAQI
14th Jul 2025167 AMAQI
14th Jul 2025158 AMAQI
14th Jul 2025169 AMAQI
14th Jul 20251610 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025161 PMAQI
14th Jul 2025162 PMAQI
14th Jul 2025163 PMAQI
14th Jul 2025184 PMAQI
14th Jul 2025185 PMAQI
14th Jul 2025196 PMAQI
14th Jul 2025207 PMAQI
14th Jul 2025208 PMAQI
14th Jul 2025189 PMAQI
14th Jul 20251910 PMAQI
14th Jul 20252311 PMAQI
15th Jul 20252512 AMAQI
15th Jul 2025241 AMAQI
15th Jul 2025222 AMAQI
15th Jul 2025203 AMAQI
15th Jul 2025184 AMAQI
15th Jul 2025195 AMAQI
15°C12/17°C
15th Jul 2025206 AMAQI
15th Jul 2025187 AMAQI
15th Jul 2025188 AMAQI
15th Jul 2025189 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20251911 AMAQI
15th Jul 20252012 PMAQI
15th Jul 2025201 PMAQI
15th Jul 2025182 PMAQI
15th Jul 2025193 PMAQI
15th Jul 2025204 PMAQI
15th Jul 2025205 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025227 PMAQI
15th Jul 2025218 PMAQI
15th Jul 2025239 PMAQI
15th Jul 20252510 PMAQI
15th Jul 20252811 PMAQI
16th Jul 20252512 AMAQI
16th Jul 2025261 AMAQI
16th Jul 2025262 AMAQI
16th Jul 2025293 AMAQI
16th Jul 2025284 AMAQI
16th Jul 2025285 AMAQI
17°C13/23°C
16th Jul 2025286 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025288 AMAQI
16th Jul 2025299 AMAQI
16th Jul 20253010 AMAQI
16th Jul 20253111 AMAQI
16th Jul 20253212 PMAQI
16th Jul 2025301 PMAQI
16th Jul 2025322 PMAQI
16th Jul 2025323 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025305 PMAQI
16th Jul 2025326 PMAQI
16th Jul 2025347 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025269 PMAQI
16th Jul 20252610 PMAQI
16th Jul 20252811 PMAQI
17th Jul 20252912 AMAQI
17th Jul 2025271 AMAQI
17th Jul 2025272 AMAQI
17th Jul 2025223 AMAQI
17th Jul 2025224 AMAQI
17th Jul 2025225 AMAQI
17°C14/23°C
17th Jul 2025226 AMAQI
17th Jul 2025227 AMAQI
17th Jul 2025208 AMAQI
17th Jul 2025219 AMAQI
17th Jul 20252110 AMAQI
17th Jul 20252111 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025231 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025218 PMAQI
17th Jul 2025199 PMAQI
17th Jul 20251810 PMAQI
17th Jul 20251911 PMAQI
18th Jul 20252012 AMAQI
18th Jul 2025201 AMAQI
18th Jul 2025182 AMAQI
18th Jul 2025143 AMAQI
18th Jul 2025134 AMAQI
18th Jul 2025145 AMAQI
16°C14/18°C
18th Jul 2025136 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025198 AMAQI
18th Jul 2025209 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20251812 PMAQI
18th Jul 2025161 PMAQI
18th Jul 2025182 PMAQI
18th Jul 2025173 PMAQI
18th Jul 2025164 PMAQI
18th Jul 2025165 PMAQI
18th Jul 2025176 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025178 PMAQI
18th Jul 2025169 PMAQI
18th Jul 20251710 PMAQI
18th Jul 20252011 PMAQI
19th Jul 20251912 AMAQI
19th Jul 2025221 AMAQI
19th Jul 2025232 AMAQI
19th Jul 2025263 AMAQI
19th Jul 2025254 AMAQI
19th Jul 2025285 AMAQI
20°C15/26°C
19th Jul 2025296 AMAQI
19th Jul 2025267 AMAQI
19th Jul 2025268 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20252911 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025302 PMAQI
19th Jul 2025303 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025286 PMAQI
19th Jul 2025287 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025289 PMAQI
19th Jul 20252810 PMAQI
19th Jul 20252711 PMAQI
20th Jul 20253112 AMAQI
20th Jul 2025321 AMAQI
20th Jul 2025322 AMAQI
20th Jul 2025333 AMAQI
20th Jul 2025344 AMAQI
20th Jul 2025335 AMAQI
18°C12/24°C
20th Jul 2025326 AMAQI
20th Jul 2025297 AMAQI
20th Jul 2025278 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20252810 AMAQI
20th Jul 20252811 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025284 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025287 PMAQI
20th Jul 2025318 PMAQI
20th Jul 2025309 PMAQI
20th Jul 20253010 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253012 AMAQI
21st Jul 2025311 AMAQI
21st Jul 2025312 AMAQI
21st Jul 2025343 AMAQI
21st Jul 2025244 AMAQI
21st Jul 2025215 AMAQI
14°C12/15°C
21st Jul 2025226 AMAQI
21st Jul 2025217 AMAQI
21st Jul 2025238 AMAQI
21st Jul 2025259 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20253011 AMAQI
21st Jul 20253612 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025382 PMAQI
21st Jul 2025313 PMAQI
21st Jul 2025254 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025217 PMAQI
21st Jul 2025218 PMAQI
21st Jul 2025249 PMAQI
21st Jul 20252310 PMAQI
21st Jul 20251911 PMAQI
22nd Jul 20251912 AMAQI
22nd Jul 2025201 AMAQI
22nd Jul 2025172 AMAQI
22nd Jul 2025143 AMAQI
22nd Jul 2025144 AMAQI
22nd Jul 2025145 AMAQI
17°C14/19°C
22nd Jul 2025126 AMAQI
22nd Jul 2025127 AMAQI
22nd Jul 2025128 AMAQI
22nd Jul 2025139 AMAQI
22nd Jul 20251310 AMAQI
22nd Jul 20251411 AMAQI
22nd Jul 20251412 PMAQI
22nd Jul 2025161 PMAQI
22nd Jul 2025152 PMAQI
22nd Jul 2025153 PMAQI
22nd Jul 2025164 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025188 PMAQI
22nd Jul 2025169 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251911 PMAQI
23rd Jul 20251912 AMAQI
23rd Jul 2025201 AMAQI
23rd Jul 2025212 AMAQI
23rd Jul 2025233 AMAQI
23rd Jul 2025294 AMAQI
23rd Jul 2025335 AMAQI
17°C12/24°C
23rd Jul 2025356 AMAQI
23rd Jul 2025337 AMAQI
23rd Jul 2025328 AMAQI
23rd Jul 2025339 AMAQI
23rd Jul 20253610 AMAQI
23rd Jul 20253511 AMAQI
23rd Jul 20253512 PMAQI
23rd Jul 2025361 PMAQI
23rd Jul 2025342 PMAQI
23rd Jul 2025343 PMAQI
23rd Jul 2025374 PMAQI
23rd Jul 2025345 PMAQI
23rd Jul 2025346 PMAQI
23rd Jul 2025347 PMAQI
23rd Jul 2025328 PMAQI
23rd Jul 2025329 PMAQI
23rd Jul 20253010 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025291 AMAQI
24th Jul 2025282 AMAQI
24th Jul 2025253 AMAQI
24th Jul 2025244 AMAQI
24th Jul 2025235 AMAQI
16°C12/21°C
24th Jul 2025236 AMAQI
24th Jul 2025217 AMAQI
24th Jul 2025228 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252510 AMAQI
24th Jul 20252511 AMAQI
24th Jul 20252612 PMAQI
24th Jul 2025261 PMAQI
24th Jul 2025272 PMAQI
24th Jul 2025283 PMAQI
24th Jul 2025284 PMAQI
24th Jul 2025305 PMAQI
24th Jul 2025296 PMAQI
24th Jul 2025307 PMAQI
24th Jul 2025328 PMAQI
24th Jul 2025289 PMAQI
24th Jul 20253010 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20253312 AMAQI
25th Jul 2025331 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025403 AMAQI
25th Jul 2025424 AMAQI
25th Jul 2025445 AMAQI
15°C12/18°C
25th Jul 2025446 AMAQI
25th Jul 2025487 AMAQI
25th Jul 2025488 AMAQI
25th Jul 2025449 AMAQI
25th Jul 20254210 AMAQI
25th Jul 20254311 AMAQI
25th Jul 20254412 PMAQI
25th Jul 2025441 PMAQI
25th Jul 2025472 PMAQI
25th Jul 2025493 PMAQI
25th Jul 2025434 PMAQI
25th Jul 2025405 PMAQI
25th Jul 2025396 PMAQI
25th Jul 2025377 PMAQI
25th Jul 2025378 PMAQI
25th Jul 2025419 PMAQI
25th Jul 20254010 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20253912 AMAQI
26th Jul 2025411 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025613 AMAQI
26th Jul 2025634 AMAQI
26th Jul 2025705 AMAQI
16°C14/17°C
26th Jul 2025626 AMAQI
26th Jul 2025617 AMAQI
26th Jul 2025608 AMAQI
26th Jul 2025569 AMAQI
26th Jul 20255510 AMAQI
26th Jul 20255311 AMAQI
26th Jul 20254912 PMAQI
26th Jul 2025461 PMAQI
26th Jul 2025442 PMAQI
26th Jul 2025423 PMAQI
26th Jul 2025444 PMAQI
26th Jul 2025495 PMAQI
26th Jul 2025486 PMAQI
26th Jul 2025487 PMAQI
26th Jul 2025488 PMAQI
26th Jul 2025499 PMAQI
26th Jul 20255010 PMAQI
26th Jul 20255011 PMAQI
27th Jul 20255212 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025502 AMAQI
27th Jul 2025513 AMAQI
27th Jul 2025554 AMAQI
27th Jul 2025545 AMAQI
21°C15/27°C
27th Jul 2025536 AMAQI
27th Jul 2025567 AMAQI
27th Jul 2025548 AMAQI
27th Jul 2025559 AMAQI
27th Jul 20255410 AMAQI
27th Jul 20255411 AMAQI
27th Jul 20255512 PMAQI
27th Jul 2025561 PMAQI
27th Jul 2025592 PMAQI
27th Jul 2025623 PMAQI
27th Jul 2025584 PMAQI
27th Jul 2025555 PMAQI
27th Jul 2025546 PMAQI
27th Jul 2025557 PMAQI
27th Jul 2025568 PMAQI
27th Jul 2025559 PMAQI
27th Jul 20255410 PMAQI
27th Jul 20255411 PMAQI
28th Jul 20255412 AMAQI
28th Jul 2025521 AMAQI
28th Jul 2025522 AMAQI
28th Jul 2025523 AMAQI
28th Jul 2025514 AMAQI
28th Jul 2025545 AMAQI
15°C9/22°C
28th Jul 2025566 AMAQI
28th Jul 2025577 AMAQI
28th Jul 2025588 AMAQI
28th Jul 2025579 AMAQI
28th Jul 20255710 AMAQI
28th Jul 20255711 AMAQI
28th Jul 20255812 PMAQI
28th Jul 2025581 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025554 PMAQI
28th Jul 2025545 PMAQI
28th Jul 2025536 PMAQI
28th Jul 2025527 PMAQI
28th Jul 2025528 PMAQI
28th Jul 2025549 PMAQI
28th Jul 20255410 PMAQI
28th Jul 20255011 PMAQI
29th Jul 20255112 AMAQI
29th Jul 2025511 AMAQI
29th Jul 2025432 AMAQI
29th Jul 2025383 AMAQI
29th Jul 2025344 AMAQI
29th Jul 2025335 AMAQI
17°C13/22°C
29th Jul 2025376 AMAQI
29th Jul 2025377 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025359 AMAQI
29th Jul 20253410 AMAQI
29th Jul 20253411 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025361 PMAQI
29th Jul 2025392 PMAQI
29th Jul 2025423 PMAQI
29th Jul 2025444 PMAQI
29th Jul 2025445 PMAQI
29th Jul 2025456 PMAQI
29th Jul 2025447 PMAQI
29th Jul 2025438 PMAQI
29th Jul 2025419 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254211 PMAQI
30th Jul 20254212 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025382 AMAQI
30th Jul 2025403 AMAQI
30th Jul 2025444 AMAQI
30th Jul 2025455 AMAQI
15°C14/17°C
30th Jul 2025446 AMAQI
30th Jul 2025447 AMAQI
30th Jul 2025458 AMAQI
30th Jul 2025479 AMAQI
30th Jul 20254910 AMAQI
30th Jul 20255211 AMAQI
30th Jul 20255412 PMAQI
30th Jul 2025541 PMAQI
30th Jul 2025542 PMAQI
30th Jul 2025533 PMAQI
30th Jul 2025534 PMAQI
30th Jul 2025535 PMAQI
30th Jul 2025536 PMAQI
30th Jul 2025537 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025539 PMAQI
30th Jul 20255310 PMAQI
30th Jul 20255411 PMAQI
31st Jul 20255412 AMAQI
31st Jul 2025541 AMAQI
31st Jul 2025552 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025554 AMAQI
31st Jul 2025565 AMAQI
18°C13/24°C
31st Jul 2025586 AMAQI
31st Jul 2025587 AMAQI
31st Jul 2025608 AMAQI
31st Jul 2025689 AMAQI
31st Jul 20256710 AMAQI
31st Jul 20257011 AMAQI
31st Jul 20257112 PMAQI
31st Jul 2025671 PMAQI
31st Jul 2025662 PMAQI
31st Jul 2025633 PMAQI
31st Jul 2025584 PMAQI
31st Jul 2025575 PMAQI
31st Jul 2025546 PMAQI
31st Jul 2025547 PMAQI
31st Jul 2025488 PMAQI
31st Jul 2025609 PMAQI
31st Jul 20254710 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025331 AMAQI
1st Aug 2025332 AMAQI
1st Aug 2025333 AMAQI
1st Aug 2025314 AMAQI
1st Aug 2025295 AMAQI
19°C15/24°C
1st Aug 2025286 AMAQI
1st Aug 2025257 AMAQI
1st Aug 2025228 AMAQI
1st Aug 2025209 AMAQI
1st Aug 20251810 AMAQI
1st Aug 20251911 AMAQI
1st Aug 20251712 PMAQI
1st Aug 2025161 PMAQI
1st Aug 2025162 PMAQI
1st Aug 2025203 PMAQI
1st Aug 2025164 PMAQI
1st Aug 2025185 PMAQI
1st Aug 2025176 PMAQI
1st Aug 2025177 PMAQI
1st Aug 2025168 PMAQI
1st Aug 2025209 PMAQI
1st Aug 20251910 PMAQI
1st Aug 20252211 PMAQI
2nd Aug 20252612 AMAQI
2nd Aug 2025321 AMAQI
2nd Aug 2025342 AMAQI
2nd Aug 2025303 AMAQI
2nd Aug 2025284 AMAQI
2nd Aug 2025245 AMAQI
19°C14/24°C
2nd Aug 2025256 AMAQI
2nd Aug 2025257 AMAQI
2nd Aug 2025248 AMAQI
2nd Aug 2025259 AMAQI
2nd Aug 20252510 AMAQI
2nd Aug 20252211 AMAQI
2nd Aug 20252112 PMAQI
2nd Aug 2025201 PMAQI
2nd Aug 2025202 PMAQI
2nd Aug 2025193 PMAQI
2nd Aug 2025204 PMAQI
2nd Aug 2025205 PMAQI
2nd Aug 2025196 PMAQI
2nd Aug 2025207 PMAQI
2nd Aug 2025288 PMAQI
2nd Aug 2025249 PMAQI
2nd Aug 20252510 PMAQI
2nd Aug 20253011 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025301 AMAQI
3rd Aug 2025322 AMAQI
3rd Aug 2025293 AMAQI
3rd Aug 2025304 AMAQI
3rd Aug 2025285 AMAQI
17°C9/23°C
3rd Aug 2025266 AMAQI
3rd Aug 2025277 AMAQI
3rd Aug 2025288 AMAQI
3rd Aug 2025289 AMAQI
3rd Aug 20253010 AMAQI
3rd Aug 20253211 AMAQI
3rd Aug 20253412 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025462 PMAQI
3rd Aug 2025433 PMAQI
3rd Aug 2025434 PMAQI
3rd Aug 2025505 PMAQI
3rd Aug 2025486 PMAQI
3rd Aug 2025467 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025339 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20255511 PMAQI
4th Aug 20255412 AMAQI
4th Aug 2025481 AMAQI
4th Aug 2025462 AMAQI
4th Aug 2025473 AMAQI
4th Aug 2025424 AMAQI
4th Aug 2025505 AMAQI
15°C8/21°C
4th Aug 2025486 AMAQI
4th Aug 2025467 AMAQI
4th Aug 2025458 AMAQI
4th Aug 2025469 AMAQI
4th Aug 20255010 AMAQI
4th Aug 20254711 AMAQI
4th Aug 20255612 PMAQI
4th Aug 2025541 PMAQI
4th Aug 2025532 PMAQI
4th Aug 2025543 PMAQI
4th Aug 2025554 PMAQI
4th Aug 2025575 PMAQI
4th Aug 2025606 PMAQI
4th Aug 2025577 PMAQI
4th Aug 2025568 PMAQI
4th Aug 2025569 PMAQI
4th Aug 20255810 PMAQI
4th Aug 20256111 PMAQI
5th Aug 20255712 AMAQI
5th Aug 2025661 AMAQI
5th Aug 2025662 AMAQI
5th Aug 2025603 AMAQI
5th Aug 2025574 AMAQI
5th Aug 2025545 AMAQI
16°C10/23°C
5th Aug 2025536 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025408 AMAQI
5th Aug 2025389 AMAQI
5th Aug 20253410 AMAQI
5th Aug 20253111 AMAQI
5th Aug 20252712 PMAQI
5th Aug 2025241 PMAQI
5th Aug 2025222 PMAQI
5th Aug 2025253 PMAQI
5th Aug 2025254 PMAQI
5th Aug 2025255 PMAQI
5th Aug 2025276 PMAQI
5th Aug 2025307 PMAQI
5th Aug 2025298 PMAQI
5th Aug 2025359 PMAQI
5th Aug 20253210 PMAQI
5th Aug 20253011 PMAQI
6th Aug 20252912 AMAQI
6th Aug 2025261 AMAQI
6th Aug 2025252 AMAQI
6th Aug 2025233 AMAQI
6th Aug 2025224 AMAQI
6th Aug 2025215 AMAQI
19°C13/23°C
6th Aug 2025216 AMAQI
6th Aug 2025227 AMAQI
6th Aug 2025218 AMAQI
6th Aug 2025209 AMAQI
6th Aug 20252110 AMAQI
6th Aug 20252211 AMAQI
6th Aug 20252012 PMAQI
6th Aug 2025201 PMAQI
6th Aug 2025232 PMAQI
6th Aug 2025223 PMAQI
6th Aug 2025224 PMAQI
6th Aug 2025235 PMAQI
6th Aug 2025216 PMAQI
6th Aug 2025207 PMAQI
6th Aug 2025218 PMAQI
6th Aug 2025249 PMAQI
6th Aug 20252610 PMAQI
6th Aug 20252811 PMAQI
7th Aug 20252712 AMAQI
7th Aug 2025301 AMAQI
7th Aug 2025282 AMAQI
7th Aug 2025283 AMAQI
7th Aug 2025284 AMAQI
7th Aug 2025255 AMAQI
18°C10/25°C
7th Aug 2025266 AMAQI
7th Aug 2025267 AMAQI
7th Aug 2025288 AMAQI
7th Aug 2025309 AMAQI
7th Aug 20253010 AMAQI
7th Aug 20253311 AMAQI
7th Aug 20253412 PMAQI
7th Aug 2025331 PMAQI
7th Aug 2025302 PMAQI
7th Aug 2025303 PMAQI
7th Aug 2025304 PMAQI
7th Aug 2025315 PMAQI
7th Aug 2025316 PMAQI
7th Aug 2025307 PMAQI
7th Aug 2025318 PMAQI
7th Aug 2025329 PMAQI
7th Aug 20253410 PMAQI
7th Aug 20253211 PMAQI
8th Aug 20253312 AMAQI
8th Aug 2025341 AMAQI
8th Aug 2025432 AMAQI
8th Aug 2025473 AMAQI
17°C10/25°C
6 AM
1 PM
9 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 9 PM
32AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
6 AM - 9 PM
32AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 9 PM (Avg. 32), while the lowest AQI was between 6 AM to 9 PM (Avg. 32).
Night time
Avg. Highest Time
12 AM - 11 PM
33AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
33AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 33), while the lowest AQI was between 12 AM to 11 PM (Avg. 33).
2025 Days Vs Air Quality
Castle Street, Saint John, New Brunswick, Canada
2025
96%
210
4%
8
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Good
210 DaysModerate
8 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 220 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
Castle Street, Saint John, New Brunswick, Canada
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
27AQI
27AQI
2nd January 2025
22AQI
22AQI
3rd January 2025
27AQI
27AQI
4th January 2025
25AQI
25AQI
5th January 2025
24AQI
24AQI
6th January 2025
25AQI
25AQI
7th January 2025
22AQI
22AQI
8th January 2025
24AQI
24AQI
9th January 2025
24AQI
24AQI
10th January 2025
26AQI
26AQI
11th January 2025
24AQI
24AQI
12th January 2025
26AQI
26AQI
13th January 2025
28AQI
28AQI
14th January 2025
33AQI
33AQI
15th January 2025
25AQI
25AQI
16th January 2025
27AQI
27AQI
17th January 2025
39AQI
39AQI
18th January 2025
32AQI
32AQI
19th January 2025
25AQI
25AQI
20th January 2025
24AQI
24AQI
21st January 2025
27AQI
27AQI
22nd January 2025
27AQI
27AQI
23rd January 2025
35AQI
35AQI
24th January 2025
29AQI
29AQI
25th January 2025
26AQI
26AQI
26th January 2025
30AQI
30AQI
27th January 2025
26AQI
26AQI
28th January 2025
30AQI
30AQI
29th January 2025
27AQI
27AQI
30th January 2025
28AQI
28AQI
31st January 2025
27AQI
27AQI
1st February 2025
28AQI
28AQI
2nd February 2025
25AQI
25AQI
3rd February 2025
26AQI
26AQI
4th February 2025
24AQI
24AQI
5th February 2025
26AQI
26AQI
6th February 2025
27AQI
27AQI
7th February 2025
25AQI
25AQI
8th February 2025
27AQI
27AQI
9th February 2025
26AQI
26AQI
10th February 2025
29AQI
29AQI
11th February 2025
27AQI
27AQI
12th February 2025
27AQI
27AQI
13th February 2025
25AQI
25AQI
14th February 2025
27AQI
27AQI
15th February 2025
29AQI
29AQI
16th February 2025
28AQI
28AQI
17th February 2025
27AQI
27AQI
18th February 2025
25AQI
25AQI
19th February 2025
22AQI
22AQI
20th February 2025
22AQI
22AQI
21st February 2025
26AQI
26AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
29AQI
29AQI
24th February 2025
34AQI
34AQI
25th February 2025
46AQI
46AQI
26th February 2025
30AQI
30AQI
27th February 2025
28AQI
28AQI
28th February 2025
34AQI
34AQI
1st March 2025
31AQI
31AQI
2nd March 2025
30AQI
30AQI
3rd March 2025
27AQI
27AQI
4th March 2025
35AQI
35AQI
5th March 2025
51AQI
51AQI
6th March 2025
30AQI
30AQI
7th March 2025
24AQI
24AQI
8th March 2025
31AQI
31AQI
9th March 2025
31AQI
31AQI
10th March 2025
29AQI
29AQI
11th March 2025
28AQI
28AQI
12th March 2025
32AQI
32AQI
13th March 2025
24AQI
24AQI
14th March 2025
22AQI
22AQI
15th March 2025
23AQI
23AQI
16th March 2025
18AQI
18AQI
17th March 2025
32AQI
32AQI
18th March 2025
16AQI
16AQI
19th March 2025
21AQI
21AQI
20th March 2025
19AQI
19AQI
21st March 2025
14AQI
14AQI
22nd March 2025
18AQI
18AQI
23rd March 2025
30AQI
30AQI
24th March 2025
18AQI
18AQI
25th March 2025
19AQI
19AQI
26th March 2025
27AQI
27AQI
27th March 2025
20AQI
20AQI
28th March 2025
18AQI
18AQI
29th March 2025
15AQI
15AQI
30th March 2025
18AQI
18AQI
31st March 2025
18AQI
18AQI
1st April 2025
20AQI
20AQI
2nd April 2025
17AQI
17AQI
3rd April 2025
18AQI
18AQI
4th April 2025
19AQI
19AQI
5th April 2025
14AQI
14AQI
6th April 2025
15AQI
15AQI
7th April 2025
16AQI
16AQI
8th April 2025
17AQI
17AQI
9th April 2025
15AQI
15AQI
10th April 2025
17AQI
17AQI
11th April 2025
12AQI
12AQI
12th April 2025
11AQI
11AQI
13th April 2025
10AQI
10AQI
14th April 2025
10AQI
10AQI
15th April 2025
9AQI
9AQI
16th April 2025
11AQI
11AQI
17th April 2025
10AQI
10AQI
18th April 2025
9AQI
9AQI
19th April 2025
10AQI
10AQI
20th April 2025
11AQI
11AQI
21st April 2025
11AQI
11AQI
22nd April 2025
16AQI
16AQI
23rd April 2025
14AQI
14AQI
24th April 2025
14AQI
14AQI
25th April 2025
17AQI
17AQI
26th April 2025
19AQI
19AQI
27th April 2025
15AQI
15AQI
28th April 2025
15AQI
15AQI
29th April 2025
26AQI
26AQI
30th April 2025
25AQI
25AQI
1st May 2025
15AQI
15AQI
2nd May 2025
22AQI
22AQI
3rd May 2025
21AQI
21AQI
4th May 2025
24AQI
24AQI
5th May 2025
16AQI
16AQI
6th May 2025
18AQI
18AQI
7th May 2025
16AQI
16AQI
8th May 2025
19AQI
19AQI
9th May 2025
16AQI
16AQI
10th May 2025
14AQI
14AQI
11th May 2025
15AQI
15AQI
12th May 2025
17AQI
17AQI
13th May 2025
20AQI
20AQI
14th May 2025
22AQI
22AQI
15th May 2025
28AQI
28AQI
16th May 2025
28AQI
28AQI
17th May 2025
24AQI
24AQI
18th May 2025
17AQI
17AQI
19th May 2025
16AQI
16AQI
20th May 2025
12AQI
12AQI
21st May 2025
15AQI
15AQI
22nd May 2025
19AQI
19AQI
23rd May 2025
18AQI
18AQI
24th May 2025
14AQI
14AQI
25th May 2025
13AQI
13AQI
26th May 2025
15AQI
15AQI
27th May 2025
24AQI
24AQI
28th May 2025
30AQI
30AQI
29th May 2025
32AQI
32AQI
30th May 2025
25AQI
25AQI
31st May 2025
21AQI
21AQI
1st June 2025
32AQI
32AQI
2nd June 2025
31AQI
31AQI
3rd June 2025
32AQI
32AQI
4th June 2025
37AQI
37AQI
5th June 2025
37AQI
37AQI
6th June 2025
47AQI
47AQI
7th June 2025
45AQI
45AQI
8th June 2025
49AQI
49AQI
9th June 2025
52AQI
52AQI
10th June 2025
42AQI
42AQI
11th June 2025
32AQI
32AQI
12th June 2025
57AQI
57AQI
13th June 2025
32AQI
32AQI
14th June 2025
25AQI
25AQI
15th June 2025
30AQI
30AQI
16th June 2025
27AQI
27AQI
17th June 2025
25AQI
25AQI
18th June 2025
22AQI
22AQI
19th June 2025
18AQI
18AQI
20th June 2025
24AQI
24AQI
21st June 2025
18AQI
18AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
35AQI
35AQI
24th June 2025
48AQI
48AQI
25th June 2025
50AQI
50AQI
26th June 2025
20AQI
20AQI
27th June 2025
20AQI
20AQI
28th June 2025
24AQI
24AQI
29th June 2025
17AQI
17AQI
30th June 2025
20AQI
20AQI
1st July 2025
30AQI
30AQI
2nd July 2025
26AQI
26AQI
3rd July 2025
32AQI
32AQI
4th July 2025
35AQI
35AQI
5th July 2025
22AQI
22AQI
6th July 2025
35AQI
35AQI
7th July 2025
46AQI
46AQI
8th July 2025
22AQI
22AQI
9th July 2025
23AQI
23AQI
10th July 2025
33AQI
33AQI
11th July 2025
27AQI
27AQI
12th July 2025
27AQI
27AQI
13th July 2025
21AQI
21AQI
14th July 2025
19AQI
19AQI
15th July 2025
21AQI
21AQI
16th July 2025
29AQI
29AQI
17th July 2025
22AQI
22AQI
18th July 2025
17AQI
17AQI
19th July 2025
27AQI
27AQI
20th July 2025
30AQI
30AQI
21st July 2025
26AQI
26AQI
22nd July 2025
15AQI
15AQI
23rd July 2025
31AQI
31AQI
24th July 2025
27AQI
27AQI
25th July 2025
41AQI
41AQI
26th July 2025
52AQI
52AQI
27th July 2025
54AQI
54AQI
28th July 2025
54AQI
54AQI
29th July 2025
40AQI
40AQI
30th July 2025
49AQI
49AQI
31st July 2025
57AQI
57AQI
1st August 2025
23AQI
23AQI
2nd August 2025
25AQI
25AQI
3rd August 2025
37AQI
37AQI
4th August 2025
52AQI
52AQI
5th August 2025
40AQI
40AQI
6th August 2025
23AQI
23AQI
27AQI
28AQI
25AQI
15AQI
20AQI
32AQI
32AQI
33AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202526AQI
31
28
30
1
30
31
28
2
27
4
5
1
210
8
Highest AQI recorded in
August33AQI
Lowest AQI recorded in
April15AQI
202426AQI
31
29
31
30
31
27
2
30
1
30
1
30
31
30
31
361
4
Highest AQI recorded in
August31AQI
Lowest AQI recorded in
November16AQI
202331AQI
31
28
31
30
31
27
3
28
3
30
1
26
4
30
1
29
30
1
351
13
Highest AQI recorded in
April35AQI
Lowest AQI recorded in
November27AQI
202229AQI
31
20
1
31
17
31
30
21
2
2
28
1
31
30
29
2
301
6
Highest AQI recorded in
February35AQI
Lowest AQI recorded in
September25AQI
202128AQI
30
28
29
2
29
1
29
2
26
4
29
2
29
2
30
31
30
30
1
350
14
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
October22AQI
202026AQI
13
20
18
29
1
27
4
31
30
31
18
2
31
248
7
Highest AQI recorded in
March32AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
31AQILeast Polluted Year Recorded
2025(Avg.)
26AQICastle Street's annual 2025 AQI (26) shows an average percentage change of -8.05% (improved AQI) compared to previous years: 2020 (26), 2021 (28), 2022 (29), 2023 (31), 2024 (26).
