Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Halifax Johnston, Halifax, Nova Scotia, 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

Halifax Johnston, Halifax, Nova Scotia, Canada

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2025
54AQI
Lowest AQI recorded on
30th Aug 2023
11AQI

Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025

Halifax Johnston, Halifax, Nova Scotia, Canada

AQI
Day
Night
.

5 AM1st Aug 2025

8 PM

4 AM2nd Aug 2025

Day time
Avg. Highest Time
6AM1st Aug

70AQI

Avg. Lowest Time
8PM1st Aug

30AQI

Night time
Avg. Highest Time
5AM1st Aug

70AQI

Avg. Lowest Time
1AM2nd Aug

30AQI

In the last 24 hours,

Halifax Johnston's AQI reached its highest point of 70 at 5 AM during the Night, while the lowest point, 30, was recorded at 1 AM during the Night between 1st Aug and 2nd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Halifax Johnston, Halifax, Nova Scotia, Canada

JulAug
03rd - 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 - 31st31st - 01st01st - 02nd02nd
Day
Night
3rd Jul 2025275 AMAQI
3rd Jul 2025326 AMAQI
3rd Jul 2025327 AMAQI
3rd Jul 2025298 AMAQI
3rd Jul 2025299 AMAQI
3rd Jul 20252810 AMAQI
3rd Jul 20253111 AMAQI
3rd Jul 20253212 PMAQI
3rd Jul 2025311 PMAQI
3rd Jul 2025322 PMAQI
3rd Jul 2025333 PMAQI
3rd Jul 2025344 PMAQI
3rd Jul 2025345 PMAQI
3rd Jul 2025316 PMAQI
3rd Jul 2025307 PMAQI
3rd Jul 2025288 PMAQI
3rd Jul 2025329 PMAQI
3rd Jul 20253410 PMAQI
3rd Jul 20253211 PMAQI
4th Jul 20253112 AMAQI
4th Jul 2025271 AMAQI
4th Jul 2025272 AMAQI
4th Jul 2025243 AMAQI
4th Jul 2025264 AMAQI

18°C15/23°C

4th Jul 2025235 AMAQI
4th Jul 2025266 AMAQI
4th Jul 2025257 AMAQI
4th Jul 2025248 AMAQI
4th Jul 2025269 AMAQI
4th Jul 20252610 AMAQI
4th Jul 20252711 AMAQI
4th Jul 20253012 PMAQI
4th Jul 2025301 PMAQI
4th Jul 2025362 PMAQI
4th Jul 2025403 PMAQI
4th Jul 2025384 PMAQI
4th Jul 2025395 PMAQI
4th Jul 2025386 PMAQI
4th Jul 2025327 PMAQI
4th Jul 2025298 PMAQI
4th Jul 2025289 PMAQI
4th Jul 20253010 PMAQI
4th Jul 20253611 PMAQI
5th Jul 20253912 AMAQI
5th Jul 2025371 AMAQI
5th Jul 2025332 AMAQI
5th Jul 2025313 AMAQI
5th Jul 2025284 AMAQI

18°C14/24°C

5th Jul 2025305 AMAQI
5th Jul 2025236 AMAQI
5th Jul 2025237 AMAQI
5th Jul 2025248 AMAQI
5th Jul 2025259 AMAQI
5th Jul 20252310 AMAQI
5th Jul 20252311 AMAQI
5th Jul 20252212 PMAQI
5th Jul 2025211 PMAQI
5th Jul 2025222 PMAQI
5th Jul 2025223 PMAQI
5th Jul 2025234 PMAQI
5th Jul 2025245 PMAQI
5th Jul 2025266 PMAQI
5th Jul 2025257 PMAQI
5th Jul 2025248 PMAQI
5th Jul 2025259 PMAQI
5th Jul 20252410 PMAQI
5th Jul 20252611 PMAQI
6th Jul 20252512 AMAQI
6th Jul 2025251 AMAQI
6th Jul 2025272 AMAQI
6th Jul 2025283 AMAQI
6th Jul 2025264 AMAQI

19°C14/26°C

6th Jul 2025285 AMAQI
6th Jul 2025286 AMAQI
6th Jul 2025287 AMAQI
6th Jul 2025288 AMAQI
6th Jul 2025279 AMAQI
6th Jul 20252810 AMAQI
6th Jul 20253211 AMAQI
6th Jul 20253412 PMAQI
6th Jul 2025371 PMAQI
6th Jul 2025382 PMAQI
6th Jul 2025423 PMAQI
6th Jul 2025404 PMAQI
6th Jul 2025345 PMAQI
6th Jul 2025336 PMAQI
6th Jul 2025347 PMAQI
6th Jul 2025358 PMAQI
6th Jul 2025329 PMAQI
6th Jul 20253010 PMAQI
6th Jul 20253211 PMAQI
7th Jul 20253212 AMAQI
7th Jul 2025321 AMAQI
7th Jul 2025342 AMAQI
7th Jul 2025463 AMAQI
7th Jul 2025444 AMAQI

18°C15/24°C

7th Jul 2025465 AMAQI
7th Jul 2025506 AMAQI
7th Jul 2025507 AMAQI
7th Jul 2025528 AMAQI
7th Jul 2025529 AMAQI
7th Jul 20255310 AMAQI
7th Jul 20255211 AMAQI
7th Jul 20255012 PMAQI
7th Jul 2025501 PMAQI
7th Jul 2025502 PMAQI
7th Jul 2025483 PMAQI
7th Jul 2025484 PMAQI
7th Jul 2025475 PMAQI
7th Jul 2025456 PMAQI
7th Jul 2025467 PMAQI
7th Jul 2025488 PMAQI
7th Jul 2025479 PMAQI
7th Jul 20254610 PMAQI
7th Jul 20254111 PMAQI
8th Jul 20253912 AMAQI
8th Jul 2025391 AMAQI
8th Jul 2025282 AMAQI
8th Jul 2025203 AMAQI
8th Jul 2025204 AMAQI

20°C14/25°C

8th Jul 2025195 AMAQI
8th Jul 2025206 AMAQI
8th Jul 2025187 AMAQI
8th Jul 2025198 AMAQI
8th Jul 2025209 AMAQI
8th Jul 20251910 AMAQI
8th Jul 20252011 AMAQI
8th Jul 20252112 PMAQI
8th Jul 2025201 PMAQI
8th Jul 2025222 PMAQI
8th Jul 2025223 PMAQI
8th Jul 2025234 PMAQI
8th Jul 2025245 PMAQI
8th Jul 2025226 PMAQI
8th Jul 2025257 PMAQI
8th Jul 2025238 PMAQI
8th Jul 2025229 PMAQI
8th Jul 20252210 PMAQI
8th Jul 20252211 PMAQI
9th Jul 20252412 AMAQI
9th Jul 2025281 AMAQI
9th Jul 2025282 AMAQI
9th Jul 2025283 AMAQI
9th Jul 2025264 AMAQI

18°C16/20°C

9th Jul 2025245 AMAQI
9th Jul 2025216 AMAQI
9th Jul 2025207 AMAQI
9th Jul 2025218 AMAQI
9th Jul 2025229 AMAQI
9th Jul 20252210 AMAQI
9th Jul 20252211 AMAQI
9th Jul 20252512 PMAQI
9th Jul 2025281 PMAQI
9th Jul 2025272 PMAQI
9th Jul 2025263 PMAQI
9th Jul 2025264 PMAQI
9th Jul 2025255 PMAQI
9th Jul 2025266 PMAQI
9th Jul 2025267 PMAQI
9th Jul 2025248 PMAQI
9th Jul 2025269 PMAQI
9th Jul 20252710 PMAQI
9th Jul 20252811 PMAQI
10th Jul 20253012 AMAQI
10th Jul 2025301 AMAQI
10th Jul 2025302 AMAQI
10th Jul 2025313 AMAQI
10th Jul 2025304 AMAQI

18°C14/21°C

10th Jul 2025295 AMAQI
10th Jul 2025306 AMAQI
10th Jul 2025307 AMAQI
10th Jul 2025338 AMAQI
10th Jul 2025349 AMAQI
10th Jul 20253710 AMAQI
10th Jul 20253611 AMAQI
10th Jul 20253612 PMAQI
10th Jul 2025321 PMAQI
10th Jul 2025312 PMAQI
10th Jul 2025363 PMAQI
10th Jul 2025324 PMAQI
10th Jul 2025325 PMAQI
10th Jul 2025306 PMAQI
10th Jul 2025307 PMAQI
10th Jul 2025308 PMAQI
10th Jul 2025319 PMAQI
10th Jul 20253010 PMAQI
10th Jul 20253111 PMAQI
11th Jul 20252812 AMAQI
11th Jul 2025281 AMAQI
11th Jul 2025272 AMAQI
11th Jul 2025223 AMAQI
11th Jul 2025244 AMAQI

17°C13/20°C

11th Jul 2025265 AMAQI
11th Jul 2025246 AMAQI
11th Jul 2025247 AMAQI
11th Jul 2025258 AMAQI
11th Jul 2025249 AMAQI
11th Jul 20252410 AMAQI
11th Jul 20252211 AMAQI
11th Jul 20252212 PMAQI
11th Jul 2025221 PMAQI
11th Jul 2025222 PMAQI
11th Jul 2025223 PMAQI
11th Jul 2025234 PMAQI
11th Jul 2025265 PMAQI
11th Jul 2025266 PMAQI
11th Jul 2025267 PMAQI
11th Jul 2025268 PMAQI
11th Jul 2025279 PMAQI
11th Jul 20252810 PMAQI
11th Jul 20252911 PMAQI
12th Jul 20252812 AMAQI
12th Jul 2025311 AMAQI
12th Jul 2025292 AMAQI
12th Jul 2025293 AMAQI
12th Jul 2025284 AMAQI

16°C14/19°C

12th Jul 2025405 AMAQI
12th Jul 2025286 AMAQI
12th Jul 2025287 AMAQI
12th Jul 2025268 AMAQI
12th Jul 2025269 AMAQI
12th Jul 20252510 AMAQI
12th Jul 20252511 AMAQI
12th Jul 20252812 PMAQI
12th Jul 2025291 PMAQI
12th Jul 2025312 PMAQI
12th Jul 2025303 PMAQI
12th Jul 2025324 PMAQI
12th Jul 2025325 PMAQI
12th Jul 2025316 PMAQI
12th Jul 2025317 PMAQI
12th Jul 2025298 PMAQI
12th Jul 2025309 PMAQI
12th Jul 20253210 PMAQI
12th Jul 20252911 PMAQI
13th Jul 20253012 AMAQI
13th Jul 2025321 AMAQI
13th Jul 2025282 AMAQI
13th Jul 2025203 AMAQI
13th Jul 2025224 AMAQI

17°C14/22°C

13th Jul 2025235 AMAQI
13th Jul 2025236 AMAQI
13th Jul 2025247 AMAQI
13th Jul 2025308 AMAQI
13th Jul 2025229 AMAQI
13th Jul 20252210 AMAQI
13th Jul 20252511 AMAQI
13th Jul 20252512 PMAQI
13th Jul 2025261 PMAQI
13th Jul 2025272 PMAQI
13th Jul 2025273 PMAQI
13th Jul 2025274 PMAQI
13th Jul 2025275 PMAQI
13th Jul 2025266 PMAQI
13th Jul 2025277 PMAQI
13th Jul 2025278 PMAQI
13th Jul 2025279 PMAQI
13th Jul 20252710 PMAQI
13th Jul 20252811 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025222 AMAQI
14th Jul 2025213 AMAQI
14th Jul 2025204 AMAQI

18°C14/23°C

14th Jul 2025185 AMAQI
14th Jul 2025186 AMAQI
14th Jul 2025177 AMAQI
14th Jul 2025178 AMAQI
14th Jul 2025189 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251711 AMAQI
14th Jul 20251912 PMAQI
14th Jul 2025201 PMAQI
14th Jul 2025192 PMAQI
14th Jul 2025203 PMAQI
14th Jul 2025224 PMAQI
14th Jul 2025225 PMAQI
14th Jul 2025246 PMAQI
14th Jul 2025247 PMAQI
14th Jul 2025228 PMAQI
14th Jul 2025209 PMAQI
14th Jul 20252210 PMAQI
14th Jul 20252411 PMAQI
15th Jul 20252212 AMAQI
15th Jul 2025231 AMAQI
15th Jul 2025212 AMAQI
15th Jul 2025213 AMAQI
15th Jul 2025184 AMAQI

17°C13/21°C

15th Jul 2025175 AMAQI
15th Jul 2025156 AMAQI
15th Jul 2025167 AMAQI
15th Jul 2025168 AMAQI
15th Jul 2025179 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20251811 AMAQI
15th Jul 20252212 PMAQI
15th Jul 2025231 PMAQI
15th Jul 2025242 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025274 PMAQI
15th Jul 2025255 PMAQI
15th Jul 2025286 PMAQI
15th Jul 2025287 PMAQI
15th Jul 2025308 PMAQI
15th Jul 2025259 PMAQI
15th Jul 20252410 PMAQI
15th Jul 20252611 PMAQI
16th Jul 20252612 AMAQI
16th Jul 2025271 AMAQI
16th Jul 2025332 AMAQI
16th Jul 2025453 AMAQI
16th Jul 2025564 AMAQI

20°C16/25°C

16th Jul 2025525 AMAQI
16th Jul 2025586 AMAQI
16th Jul 2025537 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025529 AMAQI
16th Jul 20255010 AMAQI
16th Jul 20254711 AMAQI
16th Jul 20255112 PMAQI
16th Jul 2025501 PMAQI
16th Jul 2025542 PMAQI
16th Jul 2025553 PMAQI
16th Jul 2025534 PMAQI
16th Jul 2025515 PMAQI
16th Jul 2025516 PMAQI
16th Jul 2025517 PMAQI
16th Jul 2025478 PMAQI
16th Jul 2025459 PMAQI
16th Jul 20254610 PMAQI
16th Jul 20253911 PMAQI
17th Jul 20254012 AMAQI
17th Jul 2025401 AMAQI
17th Jul 2025292 AMAQI
17th Jul 2025233 AMAQI
17th Jul 2025204 AMAQI

21°C18/25°C

17th Jul 2025185 AMAQI
17th Jul 2025186 AMAQI
17th Jul 2025177 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025199 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20252111 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025241 PMAQI
17th Jul 2025242 PMAQI
17th Jul 2025223 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025235 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025248 PMAQI
17th Jul 2025239 PMAQI
17th Jul 20252110 PMAQI
17th Jul 20252311 PMAQI
18th Jul 20252312 AMAQI
18th Jul 2025231 AMAQI
18th Jul 2025202 AMAQI
18th Jul 2025153 AMAQI
18th Jul 2025134 AMAQI

19°C18/20°C

18th Jul 2025155 AMAQI
18th Jul 2025156 AMAQI
18th Jul 2025187 AMAQI
18th Jul 2025178 AMAQI
18th Jul 2025189 AMAQI
18th Jul 20251910 AMAQI
18th Jul 20251911 AMAQI
18th Jul 20252012 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025242 PMAQI
18th Jul 2025263 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025206 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025178 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20251810 PMAQI
18th Jul 20251811 PMAQI
19th Jul 20251912 AMAQI
19th Jul 2025201 AMAQI
19th Jul 2025212 AMAQI
19th Jul 2025213 AMAQI
19th Jul 2025224 AMAQI

21°C18/27°C

19th Jul 2025215 AMAQI
19th Jul 2025206 AMAQI
19th Jul 2025197 AMAQI
19th Jul 2025208 AMAQI
19th Jul 2025199 AMAQI
19th Jul 20252010 AMAQI
19th Jul 20252011 AMAQI
19th Jul 20252212 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025236 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252411 PMAQI
20th Jul 20252512 AMAQI
20th Jul 2025251 AMAQI
20th Jul 2025272 AMAQI
20th Jul 2025283 AMAQI
20th Jul 2025274 AMAQI

20°C15/28°C

20th Jul 2025265 AMAQI
20th Jul 2025266 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025258 AMAQI
20th Jul 2025269 AMAQI
20th Jul 20252510 AMAQI
20th Jul 20252411 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025233 PMAQI
20th Jul 2025234 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025269 PMAQI
20th Jul 20252510 PMAQI
20th Jul 20252411 PMAQI
21st Jul 20252412 AMAQI
21st Jul 2025241 AMAQI
21st Jul 2025222 AMAQI
21st Jul 2025203 AMAQI
21st Jul 2025204 AMAQI

18°C14/23°C

21st Jul 2025195 AMAQI
21st Jul 2025186 AMAQI
21st Jul 2025167 AMAQI
21st Jul 2025188 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20251811 AMAQI
21st Jul 20251912 PMAQI
21st Jul 2025201 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025313 PMAQI
21st Jul 2025314 PMAQI
21st Jul 2025245 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025287 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252010 PMAQI
21st Jul 20252011 PMAQI
22nd Jul 20251912 AMAQI
22nd Jul 2025191 AMAQI
22nd Jul 2025182 AMAQI
22nd Jul 2025153 AMAQI
22nd Jul 2025144 AMAQI

18°C16/23°C

22nd Jul 2025205 AMAQI
22nd Jul 2025126 AMAQI
22nd Jul 2025127 AMAQI
22nd Jul 2025148 AMAQI
22nd Jul 2025149 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251612 PMAQI
22nd Jul 2025181 PMAQI
22nd Jul 2025162 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025164 PMAQI
22nd Jul 2025165 PMAQI
22nd Jul 2025166 PMAQI
22nd Jul 2025177 PMAQI
22nd Jul 2025178 PMAQI
22nd Jul 2025179 PMAQI
22nd Jul 20251710 PMAQI
22nd Jul 20251811 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025193 AMAQI
23rd Jul 2025204 AMAQI

18°C12/23°C

23rd Jul 2025185 AMAQI
23rd Jul 2025186 AMAQI
23rd Jul 2025207 AMAQI
23rd Jul 2025218 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252510 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025271 PMAQI
23rd Jul 2025282 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025287 PMAQI
23rd Jul 2025278 PMAQI
23rd Jul 2025259 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252411 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025261 AMAQI
24th Jul 2025252 AMAQI
24th Jul 2025263 AMAQI
24th Jul 2025254 AMAQI

19°C14/24°C

24th Jul 2025255 AMAQI
24th Jul 2025236 AMAQI
24th Jul 2025227 AMAQI
24th Jul 2025218 AMAQI
24th Jul 2025239 AMAQI
24th Jul 20252410 AMAQI
24th Jul 20252311 AMAQI
24th Jul 20252212 PMAQI
24th Jul 2025231 PMAQI
24th Jul 2025232 PMAQI
24th Jul 2025223 PMAQI
24th Jul 2025224 PMAQI
24th Jul 2025235 PMAQI
24th Jul 2025246 PMAQI
24th Jul 2025227 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025239 PMAQI
24th Jul 20252510 PMAQI
24th Jul 20252611 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025251 AMAQI
25th Jul 2025242 AMAQI
25th Jul 2025263 AMAQI
25th Jul 2025264 AMAQI

18°C13/25°C

25th Jul 2025225 AMAQI
25th Jul 2025226 AMAQI
25th Jul 2025247 AMAQI
25th Jul 2025278 AMAQI
25th Jul 2025249 AMAQI
25th Jul 20252510 AMAQI
25th Jul 20252811 AMAQI
25th Jul 20252912 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025322 PMAQI
25th Jul 2025333 PMAQI
25th Jul 2025324 PMAQI
25th Jul 2025325 PMAQI
25th Jul 2025336 PMAQI
25th Jul 2025347 PMAQI
25th Jul 2025358 PMAQI
25th Jul 2025309 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20253011 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025312 AMAQI
26th Jul 2025303 AMAQI
26th Jul 2025294 AMAQI

19°C15/25°C

26th Jul 2025325 AMAQI
26th Jul 2025386 AMAQI
26th Jul 2025527 AMAQI
26th Jul 2025578 AMAQI
26th Jul 2025539 AMAQI
26th Jul 20255410 AMAQI
26th Jul 20254911 AMAQI
26th Jul 20254312 PMAQI
26th Jul 2025381 PMAQI
26th Jul 2025332 PMAQI
26th Jul 2025323 PMAQI
26th Jul 2025304 PMAQI
26th Jul 2025335 PMAQI
26th Jul 2025326 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025328 PMAQI
26th Jul 2025339 PMAQI
26th Jul 20253410 PMAQI
26th Jul 20253111 PMAQI
27th Jul 20253112 AMAQI
27th Jul 2025341 AMAQI
27th Jul 2025302 AMAQI
27th Jul 2025263 AMAQI
27th Jul 2025264 AMAQI

21°C17/27°C

27th Jul 2025275 AMAQI
27th Jul 2025286 AMAQI
27th Jul 2025307 AMAQI
27th Jul 2025328 AMAQI
27th Jul 2025369 AMAQI
27th Jul 20253910 AMAQI
27th Jul 20254411 AMAQI
27th Jul 20255212 PMAQI
27th Jul 2025521 PMAQI
27th Jul 2025542 PMAQI
27th Jul 2025533 PMAQI
27th Jul 2025534 PMAQI
27th Jul 2025495 PMAQI
27th Jul 2025466 PMAQI
27th Jul 2025487 PMAQI
27th Jul 2025468 PMAQI
27th Jul 2025439 PMAQI
27th Jul 20254210 PMAQI
27th Jul 20254411 PMAQI
28th Jul 20254212 AMAQI
28th Jul 2025401 AMAQI
28th Jul 2025392 AMAQI
28th Jul 2025403 AMAQI
28th Jul 2025374 AMAQI

20°C13/27°C

28th Jul 2025375 AMAQI
28th Jul 2025366 AMAQI
28th Jul 2025407 AMAQI
28th Jul 2025408 AMAQI
28th Jul 2025429 AMAQI
28th Jul 20254610 AMAQI
28th Jul 20255111 AMAQI
28th Jul 20255212 PMAQI
28th Jul 2025541 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025543 PMAQI
28th Jul 2025544 PMAQI
28th Jul 2025525 PMAQI
28th Jul 2025526 PMAQI
28th Jul 2025517 PMAQI
28th Jul 2025528 PMAQI
28th Jul 2025529 PMAQI
28th Jul 20255010 PMAQI
28th Jul 20255011 PMAQI
29th Jul 20255012 AMAQI
29th Jul 2025481 AMAQI
29th Jul 2025432 AMAQI
29th Jul 2025363 AMAQI
29th Jul 2025344 AMAQI

18°C14/24°C

29th Jul 2025345 AMAQI
29th Jul 2025346 AMAQI
29th Jul 2025347 AMAQI
29th Jul 2025368 AMAQI
29th Jul 2025399 AMAQI
29th Jul 20253910 AMAQI
29th Jul 20254211 AMAQI
29th Jul 20254512 PMAQI
29th Jul 2025441 PMAQI
29th Jul 2025452 PMAQI
29th Jul 2025443 PMAQI
29th Jul 2025434 PMAQI
29th Jul 2025435 PMAQI
29th Jul 2025416 PMAQI
29th Jul 2025397 PMAQI
29th Jul 2025398 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254310 PMAQI
29th Jul 20254011 PMAQI
30th Jul 20254112 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025372 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025384 AMAQI

18°C15/24°C

30th Jul 2025415 AMAQI
30th Jul 2025466 AMAQI
30th Jul 2025497 AMAQI
30th Jul 2025498 AMAQI
30th Jul 2025509 AMAQI
30th Jul 20255210 AMAQI
30th Jul 20255211 AMAQI
30th Jul 20255412 PMAQI
30th Jul 2025541 PMAQI
30th Jul 2025542 PMAQI
30th Jul 2025543 PMAQI
30th Jul 2025544 PMAQI
30th Jul 2025555 PMAQI
30th Jul 2025556 PMAQI
30th Jul 2025557 PMAQI
30th Jul 2025558 PMAQI
30th Jul 2025559 PMAQI
30th Jul 20255510 PMAQI
30th Jul 20255311 PMAQI
31st Jul 20255312 AMAQI
31st Jul 2025521 AMAQI
31st Jul 2025462 AMAQI
31st Jul 2025383 AMAQI
31st Jul 2025364 AMAQI

21°C17/27°C

31st Jul 2025395 AMAQI
31st Jul 2025386 AMAQI
31st Jul 2025417 AMAQI
31st Jul 2025498 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255910 AMAQI
31st Jul 20256111 AMAQI
31st Jul 20256212 PMAQI
31st Jul 2025641 PMAQI
31st Jul 2025642 PMAQI
31st Jul 2025663 PMAQI
31st Jul 2025654 PMAQI
31st Jul 2025655 PMAQI
31st Jul 2025706 PMAQI
31st Jul 2025717 PMAQI
31st Jul 2025708 PMAQI
31st Jul 2025629 PMAQI
31st Jul 20256410 PMAQI
31st Jul 20257211 PMAQI
1st Aug 20257012 AMAQI
1st Aug 2025741 AMAQI
1st Aug 2025702 AMAQI
1st Aug 2025693 AMAQI
1st Aug 2025704 AMAQI

20°C16/25°C

1st Aug 2025705 AMAQI
1st Aug 2025706 AMAQI
1st Aug 2025657 AMAQI
1st Aug 2025608 AMAQI
1st Aug 2025549 AMAQI
1st Aug 20255010 AMAQI
1st Aug 20254411 AMAQI
1st Aug 20253712 PMAQI
1st Aug 2025331 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025393 PMAQI
1st Aug 2025404 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025326 PMAQI
1st Aug 2025337 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025509 PMAQI
1st Aug 20253710 PMAQI
1st Aug 20253511 PMAQI
2nd Aug 20253412 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025312 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025314 AMAQI

17°C14/19°C

2nd Aug 2025325 AMAQI
5 AM
2nd Aug 2025326 AMAQI
2nd Aug 2025297 AMAQI
2nd Aug 2025288 AMAQI
2nd Aug 2025249 AMAQI
2nd Aug 20252310 AMAQI
12 PM
8 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 PM

32AQI

16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM

32AQI

16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 32), while the lowest AQI was between 5 AM to 8 PM (Avg. 32).
Night time
Avg. Highest Time
12 AM - 1 AM

32AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM - 4 AM

29AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 32), while the lowest AQI was between 2 AM to 4 AM (Avg. 29).

2025 Days Vs Air Quality

Halifax Johnston, Halifax, Nova Scotia, Canada

2025

98%

209

2%

4

Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)

Good
209 Days
Moderate
4 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 98%

Health Risk Level:

Very Low

In 2025, 98% of 214 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

Halifax Johnston, Halifax, Nova Scotia, 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
29AQI
2nd January 2025
23AQI
3rd January 2025
19AQI
4th January 2025
18AQI
5th January 2025
20AQI
6th January 2025
18AQI
7th January 2025
19AQI
8th January 2025
18AQI
9th January 2025
18AQI
10th January 2025
19AQI
11th January 2025
21AQI
12th January 2025
20AQI
13th January 2025
24AQI
14th January 2025
26AQI
15th January 2025
20AQI
16th January 2025
22AQI
17th January 2025
31AQI
18th January 2025
26AQI
19th January 2025
24AQI
20th January 2025
20AQI
21st January 2025
22AQI
22nd January 2025
24AQI
23rd January 2025
25AQI
24th January 2025
27AQI
25th January 2025
26AQI
26th January 2025
28AQI
27th January 2025
22AQI
28th January 2025
29AQI
29th January 2025
23AQI
30th January 2025
18AQI
31st January 2025
26AQI
1st February 2025
17AQI
2nd February 2025
19AQI
3rd February 2025
21AQI
4th February 2025
19AQI
5th February 2025
21AQI
6th February 2025
24AQI
7th February 2025
21AQI
8th February 2025
22AQI
9th February 2025
22AQI
10th February 2025
25AQI
11th February 2025
24AQI
12th February 2025
23AQI
13th February 2025
24AQI
14th February 2025
19AQI
15th February 2025
19AQI
16th February 2025
26AQI
17th February 2025
19AQI
18th February 2025
18AQI
19th February 2025
19AQI
20th February 2025
23AQI
21st February 2025
20AQI
22nd February 2025
21AQI
23rd February 2025
24AQI
24th February 2025
29AQI
25th February 2025
32AQI
26th February 2025
27AQI
27th February 2025
24AQI
28th February 2025
21AQI
1st March 2025
25AQI
2nd March 2025
22AQI
3rd March 2025
21AQI
4th March 2025
25AQI
5th March 2025
36AQI
6th March 2025
22AQI
7th March 2025
18AQI
8th March 2025
21AQI
9th March 2025
19AQI
10th March 2025
20AQI
11th March 2025
22AQI
12th March 2025
22AQI
13th March 2025
19AQI
14th March 2025
23AQI
15th March 2025
25AQI
16th March 2025
19AQI
17th March 2025
23AQI
18th March 2025
20AQI
19th March 2025
19AQI
20th March 2025
17AQI
21st March 2025
15AQI
22nd March 2025
17AQI
23rd March 2025
27AQI
24th March 2025
18AQI
25th March 2025
23AQI
26th March 2025
28AQI
27th March 2025
17AQI
28th March 2025
19AQI
29th March 2025
16AQI
30th March 2025
21AQI
31st March 2025
18AQI
1st April 2025
18AQI
2nd April 2025
17AQI
3rd April 2025
19AQI
4th April 2025
18AQI
5th April 2025
17AQI
6th April 2025
18AQI
7th April 2025
17AQI
8th April 2025
16AQI
9th April 2025
18AQI
10th April 2025
19AQI
11th April 2025
28AQI
12th April 2025
26AQI
13th April 2025
26AQI
14th April 2025
32AQI
15th April 2025
23AQI
16th April 2025
27AQI
17th April 2025
31AQI
18th April 2025
26AQI
19th April 2025
28AQI
20th April 2025
36AQI
21st April 2025
13AQI
22nd April 2025
19AQI
23rd April 2025
14AQI
24th April 2025
15AQI
25th April 2025
20AQI
26th April 2025
29AQI
27th April 2025
16AQI
28th April 2025
17AQI
29th April 2025
27AQI
30th April 2025
33AQI
1st May 2025
15AQI
2nd May 2025
26AQI
3rd May 2025
22AQI
4th May 2025
25AQI
5th May 2025
17AQI
6th May 2025
20AQI
7th May 2025
22AQI
8th May 2025
16AQI
9th May 2025
19AQI
10th May 2025
16AQI
11th May 2025
15AQI
12th May 2025
17AQI
13th May 2025
19AQI
14th May 2025
19AQI
15th May 2025
24AQI
16th May 2025
24AQI
17th May 2025
26AQI
18th May 2025
14AQI
19th May 2025
27AQI
20th May 2025
17AQI
21st May 2025
21AQI
22nd May 2025
19AQI
23rd May 2025
18AQI
24th May 2025
17AQI
25th May 2025
16AQI
26th May 2025
16AQI
27th May 2025
23AQI
28th May 2025
26AQI
29th May 2025
25AQI
30th May 2025
20AQI
31st May 2025
20AQI
1st June 2025
33AQI
2nd June 2025
30AQI
3rd June 2025
22AQI
4th June 2025
25AQI
5th June 2025
27AQI
6th June 2025
37AQI
7th June 2025
34AQI
8th June 2025
39AQI
9th June 2025
41AQI
10th June 2025
34AQI
11th June 2025
32AQI
12th June 2025
55AQI
13th June 2025
38AQI
14th June 2025
23AQI
15th June 2025
25AQI
16th June 2025
24AQI
17th June 2025
22AQI
18th June 2025
20AQI
19th June 2025
27AQI
20th June 2025
23AQI
21st June 2025
23AQI
22nd June 2025
23AQI
23rd June 2025
45AQI
24th June 2025
42AQI
25th June 2025
51AQI
26th June 2025
24AQI
27th June 2025
20AQI
28th June 2025
25AQI
29th June 2025
25AQI
30th June 2025
21AQI
1st July 2025
30AQI
2nd July 2025
25AQI
3rd July 2025
30AQI
4th July 2025
30AQI
5th July 2025
26AQI
6th July 2025
31AQI
7th July 2025
46AQI
8th July 2025
23AQI
9th July 2025
25AQI
10th July 2025
31AQI
11th July 2025
25AQI
12th July 2025
30AQI
13th July 2025
26AQI
14th July 2025
21AQI
15th July 2025
22AQI
16th July 2025
47AQI
17th July 2025
23AQI
18th July 2025
19AQI
19th July 2025
22AQI
20th July 2025
25AQI
21st July 2025
22AQI
22nd July 2025
16AQI
23rd July 2025
24AQI
24th July 2025
24AQI
25th July 2025
28AQI
26th July 2025
36AQI
27th July 2025
40AQI
28th July 2025
46AQI
29th July 2025
40AQI
30th July 2025
49AQI
31st July 2025
57AQI
1st August 2025
54AQI

23AQI

22AQI

21AQI

22AQI

20AQI

30AQI

30AQI

54AQI

No. of days

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

202524AQI

31
28
31
30
31
28
2
30
1
1
209
4

Highest AQI recorded in

August

54AQI

Lowest AQI recorded in

May

20AQI

202419AQI

31
29
31
30
31
29
31
31
30
31
30
31
365

Highest AQI recorded in

August

27AQI

Lowest AQI recorded in

November

13AQI

202322AQI

31
28
31
17
10
1
30
1
29
1
30
29
30
1
265
4

Highest AQI recorded in

July

34AQI

Lowest AQI recorded in

January

18AQI

202222AQI

31
20
1
31
16
1
31
30
22
1
1
29
31
30
31
303
3

Highest AQI recorded in

July

27AQI

Lowest AQI recorded in

May

19AQI

202123AQI

30
28
31
29
1
31
28
2
30
1
31
30
29
30
31
358
4

Highest AQI recorded in

August

30AQI

Lowest AQI recorded in

January

17AQI

202023AQI

13
19
18
30
29
2
30
30
31
29
1
29
2
258
5

Highest AQI recorded in

July

28AQI

Lowest AQI recorded in

September

19AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
24AQI
Least Polluted Year Recorded
2024(Avg.)
19AQI

Halifax Johnston's annual 2025 AQI (24) shows an average percentage change of 12.3% (worsened AQI) compared to previous years: 2020 (23), 2021 (23), 2022 (22), 2023 (22), 2024 (19).