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Air quality · Manitoba, Canada

Winnipeg Air Quality Index (AQI) today

Modelled estimate for 08:00 local time (UTC-5), refreshed 3 Nov, 07:52 UTC+0.

31 Good

Live estimate · modelled

US EPA AQI08:00 UTC-5, 3 Nov Main pollutant: O₃

Air quality is satisfactory, and air pollution poses little or no risk.

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 25.

Over the next 24 hours the model expects the AQI to range from 22 around 06:00 to 31 around 09:00 (3 Nov).

779th most polluted of 849 cities worldwide right now, 8th of 8 in Canada.

What to do today

  • Long walk or run outside OK
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is satisfactory, and air pollution poses little or no risk.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

09:00 · 54 10:00 · 54 11:00 · 54 12:00 · 54 13:00 · 53 14:00 · 53 15:00 · 52 16:00 · 52 17:00 · 47 18:00 · 38 19:00 · 29 20:00 · 22 21:00 · 18 22:00 · 19 23:00 · 20 00:00 · 20 01:00 · 21 02:00 · 23 03:00 · 24 04:00 · 26 05:00 · 27 06:00 · 28 07:00 · 29 08:00 · 31 09:00 · 31 10:00 · 31 11:00 · 31 12:00 · 31 13:00 · 31 14:00 · 31 15:00 · 31 16:00 · 30 17:00 · 30 18:00 · 30 19:00 · 29 20:00 · 29 21:00 · 28 22:00 · 27 23:00 · 26 00:00 · 25 01:00 · 24 02:00 · 23 03:00 · 23 04:00 · 23 05:00 · 23 06:00 · 22 07:00 · 22 08:00 · 22 09:00 · 21 10:00 · 20 11:00 · 20 12:00 · 20 13:00 · 20 14:00 · 22 15:00 · 23 16:00 · 25 17:00 · 27 18:00 · 29 19:00 · 30 20:00 · 30 21:00 · 30 22:00 · 29 23:00 · 28 00:00 · 26 01:00 · 25 02:00 · 24 Now

US EPA AQI per hour, UTC-5. 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 09:0054
Mon 10:0054
Mon 11:0054
Mon 12:0054
Mon 13:0053
Mon 14:0053
Mon 15:0052
Mon 16:0052
Mon 17:0047
Mon 18:0038
Mon 19:0029
Mon 20:0022
Mon 21:0018
Mon 22:0019
Mon 23:0020
Tue 00:0020
Tue 01:0021
Tue 02:0023
Tue 03:0024
Tue 04:0026
Tue 05:0027
Tue 06:0028
Tue 07:0029
Tue 08:00 · Now31
Tue 09:00 · Forecast31
Tue 10:00 · Forecast31
Tue 11:00 · Forecast31
Tue 12:00 · Forecast31
Tue 13:00 · Forecast31
Tue 14:00 · Forecast31
Tue 15:00 · Forecast31
Tue 16:00 · Forecast30
Tue 17:00 · Forecast30
Tue 18:00 · Forecast30
Tue 19:00 · Forecast29
Tue 20:00 · Forecast29
Tue 21:00 · Forecast28
Tue 22:00 · Forecast27
Tue 23:00 · Forecast26
Wed 00:00 · Forecast25
Wed 01:00 · Forecast24
Wed 02:00 · Forecast23
Wed 03:00 · Forecast23
Wed 04:00 · Forecast23
Wed 05:00 · Forecast23
Wed 06:00 · Forecast22
Wed 07:00 · Forecast22
Wed 08:00 · Forecast22
Wed 09:00 · Forecast21
Wed 10:00 · Forecast20
Wed 11:00 · Forecast20
Wed 12:00 · Forecast20
Wed 13:00 · Forecast20
Wed 14:00 · Forecast22
Wed 15:00 · Forecast23
Wed 16:00 · Forecast25
Wed 17:00 · Forecast27
Wed 18:00 · Forecast29
Wed 19:00 · Forecast30
Wed 20:00 · Forecast30
Wed 21:00 · Forecast30
Wed 22:00 · Forecast29
Wed 23:00 · Forecast28
Thu 00:00 · Forecast26
Thu 01:00 · Forecast25
Thu 02:00 · Forecast24

Pollutants this hour

  • PM2.5 1.8 µg/m³ 24-hour mean 4.5 µg/m³ · within WHO’s 24-hour guideline (15) 8
  • PM10 2 µg/m³ 1
  • O₃ 68 µg/m³ 31
  • NO₂ 2 µg/m³ 1
  • SO₂ 1 µg/m³ 0
  • CO 0.14 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
Chicago United States 41
Edmonton Alberta 54
Calgary Alberta 52
Denver United States 23
Indianapolis United States 28
Mississauga Ontario 40
Toronto Ontario 41

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 Winnipeg’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 Winnipeg right now?
31 on the US EPA scale (Good) at 08:00 UTC-5, 3 Nov. O₃ 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 Winnipeg today?
For most people, yes. The EPA’s statement for “Good”: Air quality is satisfactory, and air pollution poses little or no risk. General guidance, not medical advice.

Will the air in Winnipeg get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 22 around 06:00 to 31 around 09:00 (3 Nov). Forecasts beyond a day are less certain.

How does Winnipeg compare with other cities?
Right now it is the 779th most polluted of 849 cities we track worldwide, and 8th of 8 in Canada, all on the same US EPA scale.

Why does another app show a different AQI for Winnipeg?
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.