GlobeMetrics
EN
  • English✓
  • हिंदी—
  • मराठी—

Try “Pune”, “Poona” or “पुणे”

Air quality · Alberta, Canada

Calgary Air Quality Index (AQI) today

Modelled estimate for 07:00 local time (UTC-6), refreshed 3 Nov, 07:52 UTC+0.

52 Moderate

Live estimate · modelled

US EPA AQI07:00 UTC-6, 3 Nov Main pollutant: PM2.5

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 62.

Over the next 24 hours the model expects the AQI to range from 49 around 08:00 to 59 around 19:00 (3 Nov).

617th most polluted of 849 cities worldwide right now, 5th of 8 in Canada.

What to do today

  • Long walk or run outside OK, lighter if very sensitive
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

08:00 · 53 09:00 · 53 10:00 · 55 11:00 · 56 12:00 · 58 13:00 · 57 14:00 · 57 15:00 · 58 16:00 · 59 17:00 · 61 18:00 · 65 19:00 · 69 20:00 · 72 21:00 · 74 22:00 · 75 23:00 · 73 00:00 · 70 01:00 · 68 02:00 · 65 03:00 · 62 04:00 · 59 05:00 · 57 06:00 · 54 07:00 · 52 08:00 · 49 09:00 · 50 10:00 · 51 11:00 · 51 12:00 · 52 13:00 · 53 14:00 · 53 15:00 · 54 16:00 · 56 17:00 · 57 18:00 · 58 19:00 · 59 20:00 · 59 21:00 · 59 22:00 · 58 23:00 · 58 00:00 · 58 01:00 · 57 02:00 · 57 03:00 · 57 04:00 · 57 05:00 · 57 06:00 · 57 07:00 · 59 08:00 · 63 09:00 · 69 10:00 · 72 11:00 · 72 12:00 · 68 13:00 · 63 14:00 · 58 15:00 · 55 16:00 · 53 17:00 · 52 18:00 · 52 19:00 · 52 20:00 · 52 21:00 · 52 22:00 · 52 23:00 · 53 00:00 · 54 01:00 · 55 Now

US EPA AQI per hour, UTC-6. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 08:0053
Mon 09:0053
Mon 10:0055
Mon 11:0056
Mon 12:0058
Mon 13:0057
Mon 14:0057
Mon 15:0058
Mon 16:0059
Mon 17:0061
Mon 18:0065
Mon 19:0069
Mon 20:0072
Mon 21:0074
Mon 22:0075
Mon 23:0073
Tue 00:0070
Tue 01:0068
Tue 02:0065
Tue 03:0062
Tue 04:0059
Tue 05:0057
Tue 06:0054
Tue 07:00 · Now52
Tue 08:00 · Forecast49
Tue 09:00 · Forecast50
Tue 10:00 · Forecast51
Tue 11:00 · Forecast51
Tue 12:00 · Forecast52
Tue 13:00 · Forecast53
Tue 14:00 · Forecast53
Tue 15:00 · Forecast54
Tue 16:00 · Forecast56
Tue 17:00 · Forecast57
Tue 18:00 · Forecast58
Tue 19:00 · Forecast59
Tue 20:00 · Forecast59
Tue 21:00 · Forecast59
Tue 22:00 · Forecast58
Tue 23:00 · Forecast58
Wed 00:00 · Forecast58
Wed 01:00 · Forecast57
Wed 02:00 · Forecast57
Wed 03:00 · Forecast57
Wed 04:00 · Forecast57
Wed 05:00 · Forecast57
Wed 06:00 · Forecast57
Wed 07:00 · Forecast59
Wed 08:00 · Forecast63
Wed 09:00 · Forecast69
Wed 10:00 · Forecast72
Wed 11:00 · Forecast72
Wed 12:00 · Forecast68
Wed 13:00 · Forecast63
Wed 14:00 · Forecast58
Wed 15:00 · Forecast55
Wed 16:00 · Forecast53
Wed 17:00 · Forecast52
Wed 18:00 · Forecast52
Wed 19:00 · Forecast52
Wed 20:00 · Forecast52
Wed 21:00 · Forecast52
Wed 22:00 · Forecast52
Wed 23:00 · Forecast53
Thu 00:00 · Forecast54
Thu 01:00 · Forecast55

Pollutants this hour

  • PM2.5 8.2 µg/m³ 24-hour mean 14.9 µg/m³ · within WHO’s 24-hour guideline (15) 52
  • PM10 9 µg/m³ 9
  • O₃ 64 µg/m³ 19
  • NO₂ 23 µg/m³ 11
  • SO₂ 3 µg/m³ 1
  • CO 0.21 mg/m³ 1

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
Edmonton Alberta 54
Vancouver British Columbia 100
Seattle United States 100
Portland United States 73
Winnipeg Manitoba 31
Denver United States 23
San Francisco United States 53

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Calgary’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Calgary right now?
52 on the US EPA scale (Moderate) at 07:00 UTC-6, 3 Nov. PM2.5 is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Calgary today?
For most people, yes. The EPA’s statement for “Moderate”: Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. General guidance, not medical advice.

Will the air in Calgary get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 49 around 08:00 to 59 around 19:00 (3 Nov). Forecasts beyond a day are less certain.

How does Calgary compare with other cities?
Right now it is the 617th most polluted of 849 cities we track worldwide, and 5th of 8 in Canada, all on the same US EPA scale.

Why does another app show a different AQI for Calgary?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.