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

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Latest air quality data: Ottawa

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

particulate matter (PM2.5) dust - 6 (Good)
particulate matter (PM10) suspended dust - 6 (Good)
ozone (O3) - 64 (Good)
nitrogen dioxide (NO2) - 15 (Good)
sulfur dioxide (SO2) - 2 (Good)
carbon monoxide (CO) - 291 (Good)

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

AQI 1 Good

What is the air quality in Ottawa today? Is the air polluted in Ottawa?. 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 Ottawa.

What is the current level of PM2.5 in Ottawa? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 6 (Good) For comparison, the highest level of PM2.5 in Ottawa in the last 7 days was: 11 (Friday, August 21, 2026) and the lowest: 3 (Sunday, August 23, 2026).

What is the level of PM10 today in Ottawa? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Ottawa is: 6 (Good)

How is the O3 level today in Ottawa? (ozone (O3))
64 (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))
291 (Good)

Current data Wednesday, August 26, 2026 at 9:00 PM

PM2,5 6 (Good)

PM10 6 (Good)

O3 64 (Good)

NO2 15 (Good)

SO2 2 (Good)

CO 291 (Good)

Data on air pollution from recent days in Ottawa

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	6 Good	5 Good	3 Good	5 Good	11 Good	6 Good	7 Good
pm10	5 Good	6 Good	5 Good	3 Good	5 Good	11 Good	6 Good	7 Good
o3	59 Good	46 Good	48 Good	77 Moderate	72 Moderate	53 Good	46 Good	64 Good
no2	8 Good	7 Good	5 Good	3 Good	6 Good	15 Good	9 Good	9 Good
so2	2 Good	1 Good	1 Good	1 Good	2 Good	2 Good	1 Good	2 Good
co	191 Good	196 Good	156 Good	157 Good	178 Good	333 Good	242 Good	202 Good

data source »

Quality of life in Ottawa

Green and Parks in the City

Ottawa 75%

United States: 70% Venezuela: 41% Iceland: 72%

particulate matter PM2.5

Ottawa 7 (Good)

Pleasure of spending time in the city

Ottawa 82%

United States: 75% The Bahamas: 53% Venezuela: 41% Iceland: 89%

particulate matter PM10

Ottawa 12 (Good)

Air Pollution

Ottawa 22%

United States: 29% The Bahamas: 52% Venezuela: 59% Iceland: 13%

Garbage Disposal

Ottawa 71%

United States: 71% The Bahamas: 29% Venezuela: 18% Iceland: 79%

Availability and quality of drinking water

Ottawa 84%

United States: 71% The Bahamas: 55% Venezuela: 28% Iceland: 96%

Cleanliness and tidiness

Ottawa 69%

United States: 60% The Bahamas: 35% Venezuela: 22% Iceland: 75%

Noise and Light pollution

Ottawa 44%

United States: 47% The Bahamas: 39% Venezuela: 47% Iceland: 23%

Water Pollution

Ottawa 35%

United States: 44% The Bahamas: 58% Venezuela: 76% Iceland: 8.4%

Source: Numbeo

Ottawa

Wednesday, August 26, 2026 at 9:00 PM

PM2,5 6.3 (Good)

particulate matter (PM2.5) dust

PM10 6.4 (Good)

particulate matter (PM10) suspended dust

O3 64 (Good)

ozone (O3)

NO2 15 (Good)

nitrogen dioxide (NO2)

SO2 2.2 (Good)

sulfur dioxide (SO2)

CO 291 (Good)

carbon monoxide (CO)

Ottawa

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	6.6	5.7	11	4.8	3	4.9	6.2	5.3
pm10	6.7	6	11	4.9	3.1	5	6.3	5.4
o3	64	46	53	72	77	48	46	59
no2	8.6	9.5	15	5.8	3	5.5	7.1	8
so2	1.7	1.4	2.2	2.4	0.99	1.5	1.4	1.7
co	202	242	333	178	157	156	196	191

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

🌦️ Weather · 16-day Forecast — Ottawa

16-day weather forecast for Ottawa: today around 20°C (rain), lows near 14°C. Daily temperature and conditions, updated every day. Strong wind (about 19 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — Ottawa

The UV index in Ottawa today is 6.2 (high) — unprotected fair skin can burn in about 30 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Ottawa — compare nearby locations.

Montréal 11 µg/m³
Oshawa 3 µg/m³
Markham 5 µg/m³
Toronto 7 µg/m³
Vancouver 10 µg/m³
Calgary 8 µg/m³
Edmonton 7 µg/m³
Mississauga 7 µg/m³

Frequently asked questions

Is the air safe to breathe in Ottawa today?

The current average PM2.5 across Ottawa is about 6 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Ottawa?

Right now PM2.5 in Ottawa averages about 6 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 Ottawa?

Over the past week, the highest daily PM2.5 in Ottawa was recorded on Friday, August 21 (about 11 µg/m³).

What is the UV index in Ottawa today?

The UV index in Ottawa today is 6.2 (high) — unprotected fair skin can burn in about 30 minutes.

Does today's wind help disperse smog in Ottawa?

Strong wind (about 19 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.