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

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Latest air quality data: Calgary

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

particulate matter (PM2.5) dust - 8 (Good)
particulate matter (PM10) suspended dust - 9 (Good)
ozone (O3) - 88 (Moderate)
nitrogen dioxide (NO2) - 9 (Good)
sulfur dioxide (SO2) - 2 (Good)
carbon monoxide (CO) - 233 (Good)

Real-time Air Quality Index (AQI) for Calgary, Wednesday, August 26, 2026: 2.

AQI 2 Moderate

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

Today (Wednesday, August 26, 2026) air quality is moderate in Calgary. Some pollutants in Calgary may slightly affect very few hypersensitive individuals. Air pollutants in Calgary may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Calgary? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 8 (Good) For comparison, the highest level of PM2.5 in Calgary in the last 7 days was: 17 (Wednesday, August 19, 2026) and the lowest: 6 (Wednesday, August 26, 2026). The highest PM2.5 values were recorded: 41 (August 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: April (1.9).

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

How is the O3 level today in Calgary? (ozone (O3))
88 (Moderate)

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

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

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

Current data Wednesday, August 26, 2026 at 7:00 PM

PM2,5 8 (Good)

PM10 9 (Good)

O3 88 (Moderate)

NO2 9 (Good)

SO2 2 (Good)

CO 233 (Good)

Data on air pollution from recent days in Calgary

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	6 Good	8 Good	11 Good	12 Good	15 Moderate	15 Moderate	12 Good	17 Moderate
pm10	7 Good	9 Good	12 Good	12 Good	15 Good	15 Good	12 Good	18 Good
o3	60 Good	54 Good	66 Good	65 Good	63 Good	54 Good	55 Good	48 Good
no2	13 Good	16 Good	9 Good	10 Good	15 Good	18 Good	17 Good	26 Good
so2	3 Good	3 Good	2 Good	2 Good	3 Good	3 Good	4 Good	4 Good
co	245 Good	236 Good	255 Good	155 Good	219 Good	196 Good	261 Good	257 Good

data source »

pollution pm25 hikersbay.com — Air pollution in Calgary from March 2016 to May 2020

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10	2018-09	2018-08	2018-07	2018-06	2018-05	2018-04	2018-03	2018-02	2018-01	2017-12	2017-11	2017-10	2017-09	2017-08	2017-07	2017-06	2017-05	2017-04	2016-09	2016-08	2016-04	2016-03
co:ppm	0.33 (Good)	0.3 (Good)	0.38 (Good)	0.39 (Good)	0.41 (Good)	0.5 (Good)	0.41 (Good)	0.34 (Good)	0.24 (Good)	0.21 (Good)	0.14 (Good)	0.15 (Good)	0.2 (Good)	0.27 (Good)	0.34 (Good)	0.35 (Good)	0.49 (Good)	0.41 (Good)	0.57 (Good)	0.42 (Good)	0.29 (Good)	0.52 (Good)	0.16 (Good)	0.09 (Good)	0.08 (Good)	0.07 (Good)	0.59 (Good)	0.2 (Good)	0.22 (Good)	0.23 (Good)	0.24 (Good)	0.17 (Good)	0.24 (Good)	0.3 (Good)	0.06 (Good)	0.05 (Good)	0.05 (Good)	0.02 (Good)	0.15 (Good)	0.19 (Good)	0.45 (Good)	0.28 (Good)
no2:ppm	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.03 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0 (Good)	0 (Good)	0.01 (Good)	0.01 (Good)	0.02 (Good)	0.01 (Good)	0.02 (Good)	0.01 (Good)	0.02 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0.01 (Good)	0 (Good)	0.01 (Good)	0.01 (Good)	0 (Good)	0.01 (Good)	- (Good)	0.01 (Good)
o3:ppm	0.04 (Good)	0.04 (Good)	0.03 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.03 (Good)	0.03 (Good)	0.03 (Good)	0.03 (Good)	0.03 (Good)	0.03 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.01 (Good)	0.02 (Good)	0.01 (Good)	0.03 (Good)	0.04 (Good)	0.04 (Good)	0.04 (Good)	0.04 (Good)	0.03 (Good)	0.03 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.02 (Good)	0.03 (Good)	0.03 (Good)	0.04 (Good)	0.03 (Good)	0.03 (Good)	0.03 (Good)	0.02 (Good)	0.02 (Good)	0.04 (Good)	0.03 (Good)
pm25	5.1 (Good)	4.9 (Good)	6.6 (Good)	5.6 (Good)	8.1 (Good)	6.4 (Good)	4.7 (Good)	6.4 (Good)	4.9 (Good)	5.9 (Good)	5.5 (Good)	5.2 (Good)	13 (Good)	4.3 (Good)	9.9 (Good)	10 (Good)	6.9 (Good)	6.2 (Good)	6.9 (Good)	6.1 (Good)	6.6 (Good)	41 (Unhealthy for Sensitive Groups)	9.1 (Good)	5 (Good)	7.4 (Good)	9.3 (Good)	15 (Moderate)	3.5 (Good)	5.8 (Good)	4.8 (Good)	11 (Good)	3.6 (Good)	11 (Good)	19 (Moderate)	14 (Moderate)	5 (Good)	3.6 (Good)	4.3 (Good)	- (Good)	5.1 (Good)	1.9 (Good)	3.4 (Good)

data source »

Quality of life in Calgary

Green and Parks in the City

Calgary 78%

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

particulate matter PM2.5

Calgary 8 (Good)

Pleasure of spending time in the city

Calgary 81%

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

particulate matter PM10

Calgary 14 (Good)

Air Pollution

Calgary 21%

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

Garbage Disposal

Calgary 78%

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

Availability and quality of drinking water

Calgary 86%

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

Cleanliness and tidiness

Calgary 74%

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

Noise and Light pollution

Calgary 41%

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

Water Pollution

Calgary 28%

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

Source: Numbeo

Calgary

Wednesday, August 26, 2026 at 7:00 PM

PM2,5 8.3 (Good)

particulate matter (PM2.5) dust

PM10 8.5 (Good)

particulate matter (PM10) suspended dust

O3 88 (Moderate)

ozone (O3)

NO2 9.1 (Good)

nitrogen dioxide (NO2)

SO2 2.1 (Good)

sulfur dioxide (SO2)

CO 233 (Good)

carbon monoxide (CO)

Calgary

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	17	12	15	15	12	11	8.3	6.4
pm10	18	12	15	15	12	12	8.7	6.5
o3	48	55	54	63	65	66	54	60
no2	26	17	18	15	9.5	9	16	13
so2	3.7	3.7	3.4	2.8	2	2	3.1	2.9
co	257	261	196	219	155	255	236	245

Calgary Central2

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10	2018-09	2018-08
co:ppm	0.44	0.32	0.33	0.4	0.36	0.52	0.42	0.32	0.2	0.23	0.18	0.16	0.18	0.35	0.34	0.41	0.5	0.46	0.5	0.37	0.28	0.58
no2:ppm	0.01	0.01	0.01	0.02	0.03	0.03	0.02	0.02	0.01	0.01	0.01	0.01	0.01	0.01	0.02	0.02	0.02	0.03	0.04	0.01	0.01	0.01
o3:ppm	0.03	0.04	0.03	0.02	0.01	0.01	0.01	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.03	0.02	0.01	0.01	0.01	0.02	0.01	0.02
pm25	4.1	4.7	7.2	6.7	9.6	8.3	5.9	6	4.6	5.6	5.4	5	14	4.8	10	11	8.7	8	8.8	6.8	6.5	39

Calgary Northwest

index	2020-05	2020-04	2020-03	2020-02	2020-01	2019-12	2019-11	2019-10	2019-09	2019-08	2019-07	2019-06	2019-05	2019-04	2019-03	2019-02	2019-01	2018-12	2018-11	2018-10	2018-09	2018-08	2018-07	2018-06	2018-05	2018-04	2018-03	2018-02	2018-01	2017-12	2017-11	2017-10	2017-09	2017-08	2017-07	2017-06	2017-05	2017-04	2016-09	2016-08	2016-04	2016-03
o3:ppm	0.04	0.04	0.03	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.04	0.03	0.02	0.02	0.02	0.02	0.02	0.02	0.03	0.04	0.04	0.04	0.04	0.03	0.03	0.02	0.02	0.02	0.02	0.03	0.03	0.04	0.03	0.03	0.03	0.02	0.02	0.04	0.03
pm25	6.1	5.1	5.9	4.5	6.5	4.4	3.4	6.9	5.2	6.3	5.6	5.3	11	3.8	9.3	9.8	5.2	4.4	4.9	5.3	6.8	44	9.1	5	7.4	9.3	15	3.5	5.8	4.8	11	3.6	11	19	14	5	3.6	4.3	-	5.1	1.9	3.4
no2:ppm	0	0	0.01	0.01	0.02	0.02	0.01	0.01	0.01	0	0	0	0.01	0.01	0.01	0.02	0.02	0.02	0.02	0.01	0.01	0.01	0	0	0.01	0.01	0.02	0.01	0.02	0.01	0.02	0.01	0.01	0.01	0.01	0	0.01	0.01	0	0.01	-	0.01
co:ppm	0.22	0.29	0.43	0.38	0.46	0.48	0.4	0.37	0.27	0.19	0.09	0.14	0.22	0.2	0.34	0.3	0.47	0.35	0.64	0.47	0.3	0.46	0.16	0.09	0.08	0.07	0.59	0.2	0.22	0.23	0.24	0.17	0.24	0.3	0.06	0.05	0.05	0.02	0.15	0.19	0.45	0.28

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

🌦️ Weather · 16-day Forecast — Calgary

16-day weather forecast for Calgary: today around 23°C (partly cloudy), lows near 12°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 — Calgary

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

📍 Air quality in nearby cities

Live PM2.5 around Calgary — compare nearby locations.

Edmonton 7 µg/m³
Okanagan 12 µg/m³
Surrey 10 µg/m³
Vancouver 10 µg/m³
Victoria 7 µg/m³
Toronto 7 µg/m³
Montréal 11 µg/m³
Ottawa 6 µg/m³

Frequently asked questions

Is the air safe to breathe in Calgary today?

The current average PM2.5 across Calgary is about 8 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Calgary?

Right now PM2.5 in Calgary averages about 8 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 Calgary?

Over the past week, the highest daily PM2.5 in Calgary was recorded on Wednesday, August 19 (about 17 µg/m³).

What is the UV index in Calgary today?

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

Does today's wind help disperse smog in Calgary?

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.