Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

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, 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
10AQI

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, Nova Scotia, Canada

AQI
Day
Night
.

5 AM1st Aug 2025

8 PM

4 AM2nd Aug 2025

Day time
Avg. Highest Time
6AM1st Aug

68AQI

Avg. Lowest Time
8PM1st Aug

30AQI

Night time
Avg. Highest Time
5AM1st Aug

69AQI

Avg. Lowest Time
4AM2nd Aug

29AQI

In the last 24 hours,

Halifax's AQI reached its highest point of 69 at 5 AM during the Night, while the lowest point, 29, was recorded at 4 AM during the Night between 1st Aug and 2nd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

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 20252910 AMAQI
3rd Jul 20253011 AMAQI
3rd Jul 20253112 PMAQI
3rd Jul 2025301 PMAQI
3rd Jul 2025302 PMAQI
3rd Jul 2025313 PMAQI
3rd Jul 2025324 PMAQI
3rd Jul 2025335 PMAQI
3rd Jul 2025316 PMAQI
3rd Jul 2025307 PMAQI
3rd Jul 2025298 PMAQI
3rd Jul 2025329 PMAQI
3rd Jul 20253310 PMAQI
3rd Jul 20253111 PMAQI
4th Jul 20253012 AMAQI
4th Jul 2025281 AMAQI
4th Jul 2025272 AMAQI
4th Jul 2025243 AMAQI
4th Jul 2025264 AMAQI

18°C15/23°C

4th Jul 2025245 AMAQI
4th Jul 2025266 AMAQI
4th Jul 2025247 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 2025352 PMAQI
4th Jul 2025373 PMAQI
4th Jul 2025364 PMAQI
4th Jul 2025375 PMAQI
4th Jul 2025366 PMAQI
4th Jul 2025327 PMAQI
4th Jul 2025298 PMAQI
4th Jul 2025289 PMAQI
4th Jul 20253010 PMAQI
4th Jul 20253511 PMAQI
5th Jul 20253712 AMAQI
5th Jul 2025361 AMAQI
5th Jul 2025312 AMAQI
5th Jul 2025303 AMAQI
5th Jul 2025274 AMAQI

18°C14/24°C

5th Jul 2025285 AMAQI
5th Jul 2025246 AMAQI
5th Jul 2025247 AMAQI
5th Jul 2025238 AMAQI
5th Jul 2025249 AMAQI
5th Jul 20252310 AMAQI
5th Jul 20252311 AMAQI
5th Jul 20252212 PMAQI
5th Jul 2025201 PMAQI
5th Jul 2025212 PMAQI
5th Jul 2025223 PMAQI
5th Jul 2025224 PMAQI
5th Jul 2025245 PMAQI
5th Jul 2025266 PMAQI
5th Jul 2025257 PMAQI
5th Jul 2025248 PMAQI
5th Jul 2025259 PMAQI
5th Jul 20252310 PMAQI
5th Jul 20252511 PMAQI
6th Jul 20252512 AMAQI
6th Jul 2025251 AMAQI
6th Jul 2025262 AMAQI
6th Jul 2025273 AMAQI
6th Jul 2025264 AMAQI

19°C14/26°C

6th Jul 2025275 AMAQI
6th Jul 2025276 AMAQI
6th Jul 2025287 AMAQI
6th Jul 2025278 AMAQI
6th Jul 2025269 AMAQI
6th Jul 20252810 AMAQI
6th Jul 20253111 AMAQI
6th Jul 20253312 PMAQI
6th Jul 2025361 PMAQI
6th Jul 2025382 PMAQI
6th Jul 2025403 PMAQI
6th Jul 2025394 PMAQI
6th Jul 2025345 PMAQI
6th Jul 2025336 PMAQI
6th Jul 2025347 PMAQI
6th Jul 2025358 PMAQI
6th Jul 2025329 PMAQI
6th Jul 20253110 PMAQI
6th Jul 20253411 PMAQI
7th Jul 20253312 AMAQI
7th Jul 2025341 AMAQI
7th Jul 2025362 AMAQI
7th Jul 2025463 AMAQI
7th Jul 2025464 AMAQI

18°C15/24°C

7th Jul 2025465 AMAQI
7th Jul 2025496 AMAQI
7th Jul 2025507 AMAQI
7th Jul 2025518 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 2025473 PMAQI
7th Jul 2025484 PMAQI
7th Jul 2025475 PMAQI
7th Jul 2025456 PMAQI
7th Jul 2025467 PMAQI
7th Jul 2025468 PMAQI
7th Jul 2025479 PMAQI
7th Jul 20254510 PMAQI
7th Jul 20254111 PMAQI
8th Jul 20253912 AMAQI
8th Jul 2025391 AMAQI
8th Jul 2025302 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 20252010 AMAQI
8th Jul 20252011 AMAQI
8th Jul 20252112 PMAQI
8th Jul 2025211 PMAQI
8th Jul 2025212 PMAQI
8th Jul 2025223 PMAQI
8th Jul 2025234 PMAQI
8th Jul 2025235 PMAQI
8th Jul 2025236 PMAQI
8th Jul 2025247 PMAQI
8th Jul 2025238 PMAQI
8th Jul 2025229 PMAQI
8th Jul 20252210 PMAQI
8th Jul 20252211 PMAQI
9th Jul 20252512 AMAQI
9th Jul 2025281 AMAQI
9th Jul 2025282 AMAQI
9th Jul 2025263 AMAQI
9th Jul 2025254 AMAQI

18°C16/20°C

9th Jul 2025225 AMAQI
9th Jul 2025206 AMAQI
9th Jul 2025197 AMAQI
9th Jul 2025208 AMAQI
9th Jul 2025219 AMAQI
9th Jul 20252110 AMAQI
9th Jul 20252211 AMAQI
9th Jul 20252412 PMAQI
9th Jul 2025251 PMAQI
9th Jul 2025252 PMAQI
9th Jul 2025243 PMAQI
9th Jul 2025254 PMAQI
9th Jul 2025245 PMAQI
9th Jul 2025256 PMAQI
9th Jul 2025257 PMAQI
9th Jul 2025248 PMAQI
9th Jul 2025259 PMAQI
9th Jul 20252510 PMAQI
9th Jul 20252611 PMAQI
10th Jul 20252812 AMAQI
10th Jul 2025281 AMAQI
10th Jul 2025282 AMAQI
10th Jul 2025293 AMAQI
10th Jul 2025284 AMAQI

18°C14/21°C

10th Jul 2025275 AMAQI
10th Jul 2025286 AMAQI
10th Jul 2025287 AMAQI
10th Jul 2025298 AMAQI
10th Jul 2025319 AMAQI
10th Jul 20253310 AMAQI
10th Jul 20253211 AMAQI
10th Jul 20253212 PMAQI
10th Jul 2025291 PMAQI
10th Jul 2025292 PMAQI
10th Jul 2025323 PMAQI
10th Jul 2025294 PMAQI
10th Jul 2025295 PMAQI
10th Jul 2025296 PMAQI
10th Jul 2025297 PMAQI
10th Jul 2025288 PMAQI
10th Jul 2025299 PMAQI
10th Jul 20252810 PMAQI
10th Jul 20252811 PMAQI
11th Jul 20252712 AMAQI
11th Jul 2025271 AMAQI
11th Jul 2025262 AMAQI
11th Jul 2025213 AMAQI
11th Jul 2025244 AMAQI

17°C13/20°C

11th Jul 2025255 AMAQI
11th Jul 2025236 AMAQI
11th Jul 2025227 AMAQI
11th Jul 2025248 AMAQI
11th Jul 2025239 AMAQI
11th Jul 20252310 AMAQI
11th Jul 20252111 AMAQI
11th Jul 20252112 PMAQI
11th Jul 2025221 PMAQI
11th Jul 2025212 PMAQI
11th Jul 2025213 PMAQI
11th Jul 2025224 PMAQI
11th Jul 2025245 PMAQI
11th Jul 2025256 PMAQI
11th Jul 2025267 PMAQI
11th Jul 2025258 PMAQI
11th Jul 2025259 PMAQI
11th Jul 20252610 PMAQI
11th Jul 20252811 PMAQI
12th Jul 20252612 AMAQI
12th Jul 2025291 AMAQI
12th Jul 2025282 AMAQI
12th Jul 2025283 AMAQI
12th Jul 2025274 AMAQI

16°C14/19°C

12th Jul 2025355 AMAQI
12th Jul 2025266 AMAQI
12th Jul 2025267 AMAQI
12th Jul 2025258 AMAQI
12th Jul 2025259 AMAQI
12th Jul 20252510 AMAQI
12th Jul 20252411 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025281 PMAQI
12th Jul 2025292 PMAQI
12th Jul 2025293 PMAQI
12th Jul 2025304 PMAQI
12th Jul 2025315 PMAQI
12th Jul 2025306 PMAQI
12th Jul 2025307 PMAQI
12th Jul 2025288 PMAQI
12th Jul 2025289 PMAQI
12th Jul 20253110 PMAQI
12th Jul 20252811 PMAQI
13th Jul 20252912 AMAQI
13th Jul 2025311 AMAQI
13th Jul 2025282 AMAQI
13th Jul 2025213 AMAQI
13th Jul 2025214 AMAQI

17°C14/22°C

13th Jul 2025225 AMAQI
13th Jul 2025226 AMAQI
13th Jul 2025237 AMAQI
13th Jul 2025268 AMAQI
13th Jul 2025229 AMAQI
13th Jul 20252210 AMAQI
13th Jul 20252411 AMAQI
13th Jul 20252412 PMAQI
13th Jul 2025251 PMAQI
13th Jul 2025262 PMAQI
13th Jul 2025263 PMAQI
13th Jul 2025264 PMAQI
13th Jul 2025265 PMAQI
13th Jul 2025266 PMAQI
13th Jul 2025267 PMAQI
13th Jul 2025268 PMAQI
13th Jul 2025269 PMAQI
13th Jul 20252610 PMAQI
13th Jul 20252611 PMAQI
14th Jul 20252512 AMAQI
14th Jul 2025251 AMAQI
14th Jul 2025222 AMAQI
14th Jul 2025203 AMAQI
14th Jul 2025194 AMAQI

18°C14/23°C

14th Jul 2025185 AMAQI
14th Jul 2025176 AMAQI
14th Jul 2025177 AMAQI
14th Jul 2025168 AMAQI
14th Jul 2025179 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251711 AMAQI
14th Jul 20251812 PMAQI
14th Jul 2025191 PMAQI
14th Jul 2025182 PMAQI
14th Jul 2025183 PMAQI
14th Jul 2025214 PMAQI
14th Jul 2025215 PMAQI
14th Jul 2025226 PMAQI
14th Jul 2025237 PMAQI
14th Jul 2025228 PMAQI
14th Jul 2025209 PMAQI
14th Jul 20252110 PMAQI
14th Jul 20252311 PMAQI
15th Jul 20252212 AMAQI
15th Jul 2025221 AMAQI
15th Jul 2025212 AMAQI
15th Jul 2025213 AMAQI
15th Jul 2025174 AMAQI

17°C13/21°C

15th Jul 2025175 AMAQI
15th Jul 2025166 AMAQI
15th Jul 2025167 AMAQI
15th Jul 2025168 AMAQI
15th Jul 2025179 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20251911 AMAQI
15th Jul 20252112 PMAQI
15th Jul 2025221 PMAQI
15th Jul 2025232 PMAQI
15th Jul 2025253 PMAQI
15th Jul 2025264 PMAQI
15th Jul 2025245 PMAQI
15th Jul 2025266 PMAQI
15th Jul 2025277 PMAQI
15th Jul 2025288 PMAQI
15th Jul 2025249 PMAQI
15th Jul 20252410 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025281 AMAQI
16th Jul 2025332 AMAQI
16th Jul 2025423 AMAQI
16th Jul 2025484 AMAQI

20°C16/25°C

16th Jul 2025475 AMAQI
16th Jul 2025536 AMAQI
16th Jul 2025507 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025529 AMAQI
16th Jul 20255110 AMAQI
16th Jul 20255011 AMAQI
16th Jul 20255112 PMAQI
16th Jul 2025501 PMAQI
16th Jul 2025532 PMAQI
16th Jul 2025553 PMAQI
16th Jul 2025534 PMAQI
16th Jul 2025515 PMAQI
16th Jul 2025516 PMAQI
16th Jul 2025517 PMAQI
16th Jul 2025458 PMAQI
16th Jul 2025449 PMAQI
16th Jul 20254610 PMAQI
16th Jul 20253811 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025391 AMAQI
17th Jul 2025322 AMAQI
17th Jul 2025273 AMAQI
17th Jul 2025224 AMAQI

21°C18/25°C

17th Jul 2025185 AMAQI
17th Jul 2025186 AMAQI
17th Jul 2025177 AMAQI
17th Jul 2025178 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20252011 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025221 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025235 PMAQI
17th Jul 2025236 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025238 PMAQI
17th Jul 2025239 PMAQI
17th Jul 20252110 PMAQI
17th Jul 20252311 PMAQI
18th Jul 20252312 AMAQI
18th Jul 2025221 AMAQI
18th Jul 2025202 AMAQI
18th Jul 2025153 AMAQI
18th Jul 2025134 AMAQI

19°C18/20°C

18th Jul 2025145 AMAQI
18th Jul 2025146 AMAQI
18th Jul 2025167 AMAQI
18th Jul 2025168 AMAQI
18th Jul 2025189 AMAQI
18th Jul 20251810 AMAQI
18th Jul 20251811 AMAQI
18th Jul 20252012 PMAQI
18th Jul 2025211 PMAQI
18th Jul 2025232 PMAQI
18th Jul 2025243 PMAQI
18th Jul 2025234 PMAQI
18th Jul 2025205 PMAQI
18th Jul 2025196 PMAQI
18th Jul 2025187 PMAQI
18th Jul 2025178 PMAQI
18th Jul 2025189 PMAQI
18th Jul 20251810 PMAQI
18th Jul 20251811 PMAQI
19th Jul 20251812 AMAQI
19th Jul 2025191 AMAQI
19th Jul 2025202 AMAQI
19th Jul 2025203 AMAQI
19th Jul 2025214 AMAQI

21°C18/29°C

19th Jul 2025195 AMAQI
19th Jul 2025186 AMAQI
19th Jul 2025187 AMAQI
19th Jul 2025198 AMAQI
19th Jul 2025199 AMAQI
19th Jul 20251910 AMAQI
19th Jul 20251911 AMAQI
19th Jul 20252112 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025218 PMAQI
19th Jul 2025219 PMAQI
19th Jul 20252110 PMAQI
19th Jul 20252311 PMAQI
20th Jul 20252412 AMAQI
20th Jul 2025241 AMAQI
20th Jul 2025252 AMAQI
20th Jul 2025263 AMAQI
20th Jul 2025264 AMAQI

20°C15/28°C

20th Jul 2025255 AMAQI
20th Jul 2025256 AMAQI
20th Jul 2025247 AMAQI
20th Jul 2025248 AMAQI
20th Jul 2025259 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252312 PMAQI
20th Jul 2025221 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025224 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025237 PMAQI
20th Jul 2025238 PMAQI
20th Jul 2025259 PMAQI
20th Jul 20252510 PMAQI
20th Jul 20252411 PMAQI
21st Jul 20252312 AMAQI
21st Jul 2025231 AMAQI
21st Jul 2025222 AMAQI
21st Jul 2025203 AMAQI
21st Jul 2025194 AMAQI

18°C14/23°C

21st Jul 2025185 AMAQI
21st Jul 2025176 AMAQI
21st Jul 2025167 AMAQI
21st Jul 2025188 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20251910 AMAQI
21st Jul 20251811 AMAQI
21st Jul 20251812 PMAQI
21st Jul 2025191 PMAQI
21st Jul 2025222 PMAQI
21st Jul 2025293 PMAQI
21st Jul 2025304 PMAQI
21st Jul 2025245 PMAQI
21st Jul 2025296 PMAQI
21st Jul 2025267 PMAQI
21st Jul 2025258 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 2025185 AMAQI
22nd Jul 2025126 AMAQI
22nd Jul 2025127 AMAQI
22nd Jul 2025148 AMAQI
22nd Jul 2025139 AMAQI
22nd Jul 20251510 AMAQI
22nd Jul 20251611 AMAQI
22nd Jul 20251512 PMAQI
22nd Jul 2025161 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 2025194 AMAQI

18°C12/23°C

23rd Jul 2025185 AMAQI
23rd Jul 2025186 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025218 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252510 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252612 PMAQI
23rd Jul 2025251 PMAQI
23rd Jul 2025252 PMAQI
23rd Jul 2025273 PMAQI
23rd Jul 2025264 PMAQI
23rd Jul 2025265 PMAQI
23rd Jul 2025276 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025258 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252410 PMAQI
23rd Jul 20252411 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025241 AMAQI
24th Jul 2025242 AMAQI
24th Jul 2025253 AMAQI
24th Jul 2025244 AMAQI

19°C14/24°C

24th Jul 2025245 AMAQI
24th Jul 2025236 AMAQI
24th Jul 2025217 AMAQI
24th Jul 2025218 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252310 AMAQI
24th Jul 20252211 AMAQI
24th Jul 20252212 PMAQI
24th Jul 2025221 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 20252511 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025241 AMAQI
25th Jul 2025242 AMAQI
25th Jul 2025253 AMAQI
25th Jul 2025254 AMAQI

18°C13/25°C

25th Jul 2025225 AMAQI
25th Jul 2025226 AMAQI
25th Jul 2025237 AMAQI
25th Jul 2025268 AMAQI
25th Jul 2025259 AMAQI
25th Jul 20252510 AMAQI
25th Jul 20252711 AMAQI
25th Jul 20252712 PMAQI
25th Jul 2025291 PMAQI
25th Jul 2025302 PMAQI
25th Jul 2025313 PMAQI
25th Jul 2025314 PMAQI
25th Jul 2025325 PMAQI
25th Jul 2025326 PMAQI
25th Jul 2025327 PMAQI
25th Jul 2025338 PMAQI
25th Jul 2025309 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20252911 PMAQI
26th Jul 20252912 AMAQI
26th Jul 2025301 AMAQI
26th Jul 2025302 AMAQI
26th Jul 2025293 AMAQI
26th Jul 2025274 AMAQI

19°C15/25°C

26th Jul 2025305 AMAQI
26th Jul 2025366 AMAQI
26th Jul 2025517 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025539 AMAQI
26th Jul 20255310 AMAQI
26th Jul 20254711 AMAQI
26th Jul 20254212 PMAQI
26th Jul 2025371 PMAQI
26th Jul 2025332 PMAQI
26th Jul 2025303 PMAQI
26th Jul 2025304 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025336 PMAQI
26th Jul 2025327 PMAQI
26th Jul 2025328 PMAQI
26th Jul 2025339 PMAQI
26th Jul 20253410 PMAQI
26th Jul 20253111 PMAQI
27th Jul 20253212 AMAQI
27th Jul 2025331 AMAQI
27th Jul 2025292 AMAQI
27th Jul 2025253 AMAQI
27th Jul 2025244 AMAQI

21°C17/27°C

27th Jul 2025255 AMAQI
27th Jul 2025276 AMAQI
27th Jul 2025277 AMAQI
27th Jul 2025298 AMAQI
27th Jul 2025349 AMAQI
27th Jul 20253710 AMAQI
27th Jul 20254211 AMAQI
27th Jul 20254912 PMAQI
27th Jul 2025521 PMAQI
27th Jul 2025552 PMAQI
27th Jul 2025543 PMAQI
27th Jul 2025534 PMAQI
27th Jul 2025495 PMAQI
27th Jul 2025466 PMAQI
27th Jul 2025487 PMAQI
27th Jul 2025468 PMAQI
27th Jul 2025429 PMAQI
27th Jul 20254110 PMAQI
27th Jul 20254311 PMAQI
28th Jul 20254112 AMAQI
28th Jul 2025391 AMAQI
28th Jul 2025382 AMAQI
28th Jul 2025383 AMAQI
28th Jul 2025364 AMAQI

20°C13/27°C

28th Jul 2025365 AMAQI
28th Jul 2025366 AMAQI
28th Jul 2025387 AMAQI
28th Jul 2025398 AMAQI
28th Jul 2025419 AMAQI
28th Jul 20254610 AMAQI
28th Jul 20255011 AMAQI
28th Jul 20255112 PMAQI
28th Jul 2025531 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025543 PMAQI
28th Jul 2025534 PMAQI
28th Jul 2025515 PMAQI
28th Jul 2025516 PMAQI
28th Jul 2025517 PMAQI
28th Jul 2025518 PMAQI
28th Jul 2025519 PMAQI
28th Jul 20254910 PMAQI
28th Jul 20254911 PMAQI
29th Jul 20254912 AMAQI
29th Jul 2025481 AMAQI
29th Jul 2025442 AMAQI
29th Jul 2025393 AMAQI
29th Jul 2025364 AMAQI

18°C15/24°C

29th Jul 2025365 AMAQI
29th Jul 2025366 AMAQI
29th Jul 2025357 AMAQI
29th Jul 2025378 AMAQI
29th Jul 2025389 AMAQI
29th Jul 20253910 AMAQI
29th Jul 20254311 AMAQI
29th Jul 20254512 PMAQI
29th Jul 2025431 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025433 PMAQI
29th Jul 2025424 PMAQI
29th Jul 2025435 PMAQI
29th Jul 2025416 PMAQI
29th Jul 2025407 PMAQI
29th Jul 2025398 PMAQI
29th Jul 2025439 PMAQI
29th Jul 20254310 PMAQI
29th Jul 20254011 PMAQI
30th Jul 20254112 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025372 AMAQI
30th Jul 2025343 AMAQI
30th Jul 2025364 AMAQI

18°C15/24°C

30th Jul 2025395 AMAQI
30th Jul 2025446 AMAQI
30th Jul 2025477 AMAQI
30th Jul 2025478 AMAQI
30th Jul 2025499 AMAQI
30th Jul 20255110 AMAQI
30th Jul 20255111 AMAQI
30th Jul 20255212 PMAQI
30th Jul 2025511 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025523 PMAQI
30th Jul 2025524 PMAQI
30th Jul 2025525 PMAQI
30th Jul 2025526 PMAQI
30th Jul 2025527 PMAQI
30th Jul 2025528 PMAQI
30th Jul 2025529 PMAQI
30th Jul 20255210 PMAQI
30th Jul 20255111 PMAQI
31st Jul 20255112 AMAQI
31st Jul 2025501 AMAQI
31st Jul 2025442 AMAQI
31st Jul 2025363 AMAQI
31st Jul 2025344 AMAQI

21°C17/27°C

31st Jul 2025365 AMAQI
31st Jul 2025376 AMAQI
31st Jul 2025407 AMAQI
31st Jul 2025478 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255910 AMAQI
31st Jul 20256011 AMAQI
31st Jul 20256212 PMAQI
31st Jul 2025641 PMAQI
31st Jul 2025642 PMAQI
31st Jul 2025663 PMAQI
31st Jul 2025644 PMAQI
31st Jul 2025655 PMAQI
31st Jul 2025686 PMAQI
31st Jul 2025707 PMAQI
31st Jul 2025698 PMAQI
31st Jul 2025619 PMAQI
31st Jul 20256410 PMAQI
31st Jul 20257011 PMAQI
1st Aug 20256812 AMAQI
1st Aug 2025711 AMAQI
1st Aug 2025672 AMAQI
1st Aug 2025673 AMAQI
1st Aug 2025684 AMAQI

20°C16/25°C

1st Aug 2025695 AMAQI
1st Aug 2025686 AMAQI
1st Aug 2025637 AMAQI
1st Aug 2025588 AMAQI
1st Aug 2025539 AMAQI
1st Aug 20254810 AMAQI
1st Aug 20254311 AMAQI
1st Aug 20253612 PMAQI
1st Aug 2025331 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025393 PMAQI
1st Aug 2025414 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025346 PMAQI
1st Aug 2025327 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025489 PMAQI
1st Aug 20253610 PMAQI
1st Aug 20253311 PMAQI
2nd Aug 20253212 AMAQI
2nd Aug 2025291 AMAQI
2nd Aug 2025312 AMAQI
2nd Aug 2025323 AMAQI
2nd Aug 2025294 AMAQI

17°C14/19°C

2nd Aug 2025315 AMAQI
5 AM
2nd Aug 2025316 AMAQI
2nd Aug 2025287 AMAQI
2nd Aug 2025278 AMAQI
2nd Aug 2025239 AMAQI
2nd Aug 20252210 AMAQI
2nd Aug 20252211 AMAQI
2nd Aug 20252212 PMAQI
12 PM
2nd Aug 2025211 PMAQI
2nd Aug 2025202 PMAQI
2nd Aug 2025213 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025225 PMAQI
8 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 PM

30AQI

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

30AQI

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. 30), while the lowest AQI was between 5 AM to 8 PM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 1 AM

31AQI

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

28AQI

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. 31), while the lowest AQI was between 2 AM to 4 AM (Avg. 28).

2025 Days Vs Air Quality

Halifax, Nova Scotia, Canada

2025

99%

210

1%

3

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

Good
210 Days
Moderate
3 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 99%

Health Risk Level:

Very Low

In 2025, 99% 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, 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
27AQI
2nd January 2025
24AQI
3rd January 2025
19AQI
4th January 2025
18AQI
5th January 2025
20AQI
6th January 2025
18AQI
7th January 2025
19AQI
8th January 2025
17AQI
9th January 2025
18AQI
10th January 2025
19AQI
11th January 2025
20AQI
12th January 2025
20AQI
13th January 2025
24AQI
14th January 2025
26AQI
15th January 2025
20AQI
16th January 2025
21AQI
17th January 2025
30AQI
18th January 2025
25AQI
19th January 2025
23AQI
20th January 2025
19AQI
21st January 2025
21AQI
22nd January 2025
24AQI
23rd January 2025
24AQI
24th January 2025
25AQI
25th January 2025
24AQI
26th January 2025
26AQI
27th January 2025
20AQI
28th January 2025
28AQI
29th January 2025
22AQI
30th January 2025
18AQI
31st January 2025
25AQI
1st February 2025
18AQI
2nd February 2025
19AQI
3rd February 2025
21AQI
4th February 2025
18AQI
5th February 2025
20AQI
6th February 2025
24AQI
7th February 2025
20AQI
8th February 2025
21AQI
9th February 2025
22AQI
10th February 2025
24AQI
11th February 2025
24AQI
12th February 2025
22AQI
13th February 2025
23AQI
14th February 2025
19AQI
15th February 2025
19AQI
16th February 2025
23AQI
17th February 2025
19AQI
18th February 2025
18AQI
19th February 2025
19AQI
20th February 2025
22AQI
21st February 2025
20AQI
22nd February 2025
20AQI
23rd February 2025
23AQI
24th February 2025
29AQI
25th February 2025
32AQI
26th February 2025
26AQI
27th February 2025
23AQI
28th February 2025
21AQI
1st March 2025
24AQI
2nd March 2025
21AQI
3rd March 2025
21AQI
4th March 2025
25AQI
5th March 2025
33AQI
6th March 2025
22AQI
7th March 2025
18AQI
8th March 2025
21AQI
9th March 2025
20AQI
10th March 2025
20AQI
11th March 2025
22AQI
12th March 2025
23AQI
13th March 2025
19AQI
14th March 2025
22AQI
15th March 2025
24AQI
16th March 2025
18AQI
17th March 2025
23AQI
18th March 2025
20AQI
19th March 2025
19AQI
20th March 2025
16AQI
21st March 2025
14AQI
22nd March 2025
16AQI
23rd March 2025
25AQI
24th March 2025
18AQI
25th March 2025
22AQI
26th March 2025
27AQI
27th March 2025
17AQI
28th March 2025
18AQI
29th March 2025
16AQI
30th March 2025
20AQI
31st March 2025
18AQI
1st April 2025
18AQI
2nd April 2025
17AQI
3rd April 2025
18AQI
4th April 2025
18AQI
5th April 2025
17AQI
6th April 2025
17AQI
7th April 2025
16AQI
8th April 2025
15AQI
9th April 2025
17AQI
10th April 2025
18AQI
11th April 2025
26AQI
12th April 2025
25AQI
13th April 2025
27AQI
14th April 2025
29AQI
15th April 2025
22AQI
16th April 2025
25AQI
17th April 2025
29AQI
18th April 2025
26AQI
19th April 2025
27AQI
20th April 2025
33AQI
21st April 2025
13AQI
22nd April 2025
17AQI
23rd April 2025
13AQI
24th April 2025
15AQI
25th April 2025
19AQI
26th April 2025
26AQI
27th April 2025
15AQI
28th April 2025
17AQI
29th April 2025
25AQI
30th April 2025
32AQI
1st May 2025
15AQI
2nd May 2025
23AQI
3rd May 2025
21AQI
4th May 2025
24AQI
5th May 2025
16AQI
6th May 2025
20AQI
7th May 2025
21AQI
8th May 2025
16AQI
9th May 2025
19AQI
10th May 2025
15AQI
11th May 2025
15AQI
12th May 2025
16AQI
13th May 2025
17AQI
14th May 2025
18AQI
15th May 2025
23AQI
16th May 2025
23AQI
17th May 2025
24AQI
18th May 2025
14AQI
19th May 2025
24AQI
20th May 2025
16AQI
21st May 2025
20AQI
22nd May 2025
18AQI
23rd May 2025
17AQI
24th May 2025
17AQI
25th May 2025
16AQI
26th May 2025
15AQI
27th May 2025
21AQI
28th May 2025
25AQI
29th May 2025
24AQI
30th May 2025
19AQI
31st May 2025
20AQI
1st June 2025
32AQI
2nd June 2025
29AQI
3rd June 2025
21AQI
4th June 2025
24AQI
5th June 2025
26AQI
6th June 2025
36AQI
7th June 2025
33AQI
8th June 2025
39AQI
9th June 2025
39AQI
10th June 2025
33AQI
11th June 2025
31AQI
12th June 2025
54AQI
13th June 2025
38AQI
14th June 2025
22AQI
15th June 2025
24AQI
16th June 2025
23AQI
17th June 2025
22AQI
18th June 2025
20AQI
19th June 2025
25AQI
20th June 2025
22AQI
21st June 2025
21AQI
22nd June 2025
20AQI
23rd June 2025
42AQI
24th June 2025
41AQI
25th June 2025
50AQI
26th June 2025
25AQI
27th June 2025
20AQI
28th June 2025
23AQI
29th June 2025
23AQI
30th June 2025
20AQI
1st July 2025
29AQI
2nd July 2025
24AQI
3rd July 2025
30AQI
4th July 2025
29AQI
5th July 2025
26AQI
6th July 2025
31AQI
7th July 2025
45AQI
8th July 2025
24AQI
9th July 2025
24AQI
10th July 2025
29AQI
11th July 2025
24AQI
12th July 2025
28AQI
13th July 2025
25AQI
14th July 2025
20AQI
15th July 2025
22AQI
16th July 2025
45AQI
17th July 2025
24AQI
18th July 2025
19AQI
19th July 2025
21AQI
20th July 2025
24AQI
21st July 2025
22AQI
22nd July 2025
16AQI
23rd July 2025
22AQI
24th July 2025
23AQI
25th July 2025
27AQI
26th July 2025
35AQI
27th July 2025
38AQI
28th July 2025
45AQI
29th July 2025
42AQI
30th July 2025
47AQI
31st July 2025
55AQI
1st August 2025
54AQI

22AQI

22AQI

21AQI

21AQI

19AQI

29AQI

30AQI

54AQI

No. of days

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

202524AQI

31
28
31
30
31
29
1
30
1
1
210
3

Highest AQI recorded in

August

54AQI

Lowest AQI recorded in

May

19AQI

202418AQI

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

Highest AQI recorded in

August

25AQI

Lowest AQI recorded in

November

13AQI

202322AQI

31
28
31
30
29
2
26
4
30
1
30
1
29
1
31
29
30
1
354
10

Highest AQI recorded in

June

27AQI

Lowest AQI recorded in

January

18AQI

202221AQI

31
21
31
30
31
30
22
1
1
29
31
30
31
318
1

Highest AQI recorded in

July

27AQI

Lowest AQI recorded in

May

18AQI

202122AQI

30
28
31
29
1
31
28
2
30
1
31
30
31
30
31
360
4

Highest AQI recorded in

August

29AQI

Lowest AQI recorded in

January

17AQI

202021AQI

13
21
18
30
30
1
30
30
31
29
1
29
2
261
4

Highest AQI recorded in

July

26AQI

Lowest AQI recorded in

September

18AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
24AQI
Least Polluted Year Recorded
2024(Avg.)
18AQI

Halifax's annual 2025 AQI (24) shows an average percentage change of 12.3% (worsened AQI) compared to previous years: 2020 (21), 2021 (22), 2022 (21), 2023 (22), 2024 (18).