Smog in Halifax — Live Data: AQI, Fine Dust, Wind, UV and Health Advice

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Latest air quality data: Halifax

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Pollution and air quality forecast for Halifax. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Halifax:

particulate matter (PM2.5) dust - 9 (Good)
particulate matter (PM10) suspended dust - 9 (Good)
ozone (O3) - 67 (Good)
nitrogen dioxide (NO2) - 15 (Good)
sulfur dioxide (SO2) - 2 (Good)
carbon monoxide (CO) - 225 (Good)

Real-time Air Quality Index (AQI) for Halifax, Wednesday, August 26, 2026: 1.

AQI 1 Good

What is the air quality in Halifax today? Is the air polluted in Halifax?. Is there smog?

Today (Wednesday, August 26, 2026) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Halifax.

What is the current level of PM2.5 in Halifax? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 9 (Good) For comparison, the highest level of PM2.5 in Halifax in the last 7 days was: 6 (Saturday, August 22, 2026) and the lowest: 3 (Wednesday, August 19, 2026).

What is the level of PM10 today in Halifax? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Halifax is: 9 (Good)

How is the O3 level today in Halifax? (ozone (O3))
67 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
15 (Good)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
2 (Good)

How high is the CO level? (carbon monoxide (CO))
225 (Good)

Current data Wednesday, August 26, 2026 at 10:00 PM

PM2,5 9 (Good)

PM10 9 (Good)

O3 67 (Good)

NO2 15 (Good)

SO2 2 (Good)

CO 225 (Good)

Data on air pollution from recent days in Halifax

index	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20	2026-08-19
pm25	5 Good	5 Good	4 Good	4 Good	6 Good	6 Good	6 Good	3 Good
pm10	6 Good	6 Good	6 Good	6 Good	8 Good	7 Good	8 Good	4 Good
o3	87 Moderate	90 Moderate	81 Moderate	73 Moderate	72 Moderate	83 Moderate	83 Moderate	72 Moderate
no2	5 Good	4 Good	2 Good	2 Good	3 Good	6 Good	4 Good	4 Good
so2	1 Good	1 Good	1 Good	1 Good	1 Good	2 Good	1 Good	1 Good
co	149 Good	140 Good	110 Good	116 Good	144 Good	183 Good	134 Good	126 Good

data source »

Halifax

Wednesday, August 26, 2026 at 10:00 PM

PM2,5 8.6 (Good)

particulate matter (PM2.5) dust

PM10 9.3 (Good)

particulate matter (PM10) suspended dust

O3 67 (Good)

ozone (O3)

NO2 15 (Good)

nitrogen dioxide (NO2)

SO2 1.6 (Good)

sulfur dioxide (SO2)

CO 225 (Good)

carbon monoxide (CO)

Halifax

index	2026-08-19	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26
pm25	2.9	5.9	6.4	5.9	4.2	3.9	5.1	5.3
pm10	3.7	7.6	6.9	7.7	5.8	5.6	6.3	6
o3	72	83	83	72	73	81	90	87
no2	3.7	4.2	5.8	2.8	1.6	2.1	3.7	4.7
so2	1	1.1	1.6	1.3	0.55	0.62	1.1	1.2
co	126	134	183	144	116	110	140	149

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — Canada

16-day weather forecast for Canada: today around 22°C (rain), lows near 15°C. Daily temperature and conditions, updated every day. Strong wind (about 21 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Canada

The UV index in Canada today is 5.2 (moderate) — unprotected fair skin can burn in about 40 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Halifax — compare nearby locations.

Montréal 11 µg/m³
Ottawa 6 µg/m³
Toronto 7 µg/m³
Vancouver 10 µg/m³
Calgary 8 µg/m³
Edmonton 7 µg/m³
Mississauga 7 µg/m³
Winnipeg 5 µg/m³

Frequently asked questions

Is the air safe to breathe in Halifax today?

The current average PM2.5 across Halifax is about 9 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Halifax?

Right now PM2.5 in Halifax averages about 9 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Halifax?

Over the past week, the highest daily PM2.5 in Halifax was recorded on Friday, August 21 (about 6 µg/m³).

What is the UV index in Halifax today?

The UV index in Halifax today is 5.2 (moderate) — unprotected fair skin can burn in about 40 minutes.

Does today's wind help disperse smog in Halifax?

Strong wind (about 21 km/h) is actively clearing smog and dust away.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.