Fine particles
8.2µg/m³CAMS model • Open-Meteo
CanadaAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
Canada - average concentrations across available points: PM2.5: 8.2 µg/m³, PM10: 8.6 µg/m³, O₃: 51.3 µg/m³, NO₂: 18.4 µg/m³, SO₂: 3.8 µg/m³, CO: 294.4 µg/m³. Date range: October 22, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Ottawa (1.2 µg/m³). Highest PM2.5: Edmonton (29.5 µg/m³). This comparison covers 20 cities on October 22, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
5 weather warnings in effect for Canada
All cities · Canada
20 citiesCanada↗
Toronto
PM2.54.2
PM104.3
µg/m³
PM2.5 · GoodNO₂ 15.9O₃ 62
October 22, 202621:00
Canada↗
Montréal
PM2.53.5
PM103.6
µg/m³
PM2.5 · GoodNO₂ 19.5O₃ 39
October 22, 202621:00
Canada↗
Vancouver
PM2.519.7
PM1021.1
µg/m³
PM2.5 · ModerateNO₂ 25.8O₃ 57
October 22, 202618:00
Canada↗
Calgary
PM2.59.3
PM1010.2
µg/m³
PM2.5 · FairNO₂ 36.1O₃ 34
October 22, 202619:00
Canada↗
Ottawa
PM2.51.2
PM101.4
µg/m³
PM2.5 · GoodNO₂ 5.4O₃ 53
October 22, 202621:00
Canada↗
Edmonton
PM2.529.5
PM1030.6
µg/m³
PM2.5 · ModerateNO₂ 48.2O₃ 0
October 22, 202619:00
Canada↗
Mississauga
PM2.54.2
PM104.3
µg/m³
PM2.5 · GoodNO₂ 15.9O₃ 62
October 22, 202621:00
Canada↗
Winnipeg
PM2.54.1
PM104.1
µg/m³
PM2.5 · GoodNO₂ 11.3O₃ 48
October 22, 202620:00
Canada↗
Québec
PM2.53.1
PM103.2
µg/m³
PM2.5 · GoodNO₂ 17O₃ 41
October 22, 202621:00
Canada↗
Hamilton
PM2.58.5
PM108.6
µg/m³
PM2.5 · FairNO₂ 29.1O₃ 45
October 22, 202621:00
Canada↗
Brampton
PM2.54.2
PM104.3
µg/m³
PM2.5 · GoodNO₂ 15.9O₃ 62
October 22, 202621:00
Canada↗
Kitchener
PM2.54.2
PM104.3
µg/m³
PM2.5 · GoodNO₂ 8.9O₃ 62
October 22, 202621:00
Canada↗
Surrey
PM2.527
PM1028.1
µg/m³
PM2.5 · ModerateNO₂ 43.6O₃ 35
October 22, 202618:00
Canada↗
Halifax
PM2.51.9
PM102.3
µg/m³
PM2.5 · GoodNO₂ 2.8O₃ 63
October 22, 202622:00
Canada↗
London
PM2.56.8
PM106.9
µg/m³
PM2.5 · FairNO₂ 11.7O₃ 59
October 22, 202621:00
Canada↗
Okanagan
PM2.56.3
PM107.2
µg/m³
PM2.5 · FairNO₂ 5.2O₃ 80
October 22, 202618:00
Canada↗
Victoria
PM2.57.5
PM108.5
µg/m³
PM2.5 · FairNO₂ 10.4O₃ 66
October 22, 202618:00
Canada↗
Markham
PM2.53.5
PM103.6
µg/m³
PM2.5 · GoodNO₂ 8.6O₃ 57
October 22, 202621:00
Canada↗
Buffalo
PM2.512.8
PM1012.9
µg/m³
PM2.5 · FairNO₂ 30.2O₃ 44
October 22, 202621:00
Canada↗
Oshawa
PM2.52.8
PM102.8
µg/m³
PM2.5 · GoodNO₂ 6.9O₃ 56
October 22, 202621:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Canada
Particulate matter
8.6µg/m³Ozone
51.3µg/m³Nitrogen dioxide
18.4µg/m³Sulphur dioxide
3.8µg/m³Carbon monoxide
294.4µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · Canada
Canada - air pollution over recent days (2026-08-30 - 2026-10-21)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 3.56 2026-10-17Highest 12.85 2026-09-012026-08-30 - 2026-10-21
PM10Lowest 4.22 2026-10-17Highest 13.2 2026-09-012026-08-30 - 2026-10-21
O₃Lowest 36.85 2026-10-21Highest 68.64 2026-09-012026-08-30 - 2026-10-21
NO₂Lowest 7.86 2026-10-17Highest 25.97 2026-10-212026-08-30 - 2026-10-21
SO₂Lowest 2.38 2026-10-17Highest 8.22 2026-10-212026-08-30 - 2026-10-21
COLowest 148.9 2026-10-17Highest 449.84 2026-10-212026-08-30 - 2026-10-21
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-21 | 2026-10-20 | 2026-10-19 | 2026-10-18 | 2026-10-17 | 2026-10-16 | 2026-10-15 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 | 2026-08-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 11.24 | 8.69 | 7.21 | 4.89 | 3.56 | 5.83 | 6.06 | 7.87 | 5.92 | 8.76 | 7.3 | 8.25 | 12.85 | 8.21 | 6.46 |
| PM10 | 11.47 | 9.02 | 7.51 | 5.25 | 4.22 | 5.96 | 6.25 | 8.17 | 6.13 | 9.44 | 7.94 | 8.67 | 13.2 | 8.48 | 7 |
| O₃ | 36.85 | 42.26 | 43.53 | 52.47 | 59.84 | 45.24 | 51.61 | 53.09 | 56.31 | 52.48 | 63.55 | 64.04 | 68.64 | 60.29 | 62.11 |
| NO₂ | 25.97 | 19.41 | 18.8 | 12.35 | 7.86 | 13.42 | 12.21 | 11.62 | 10.56 | 15.25 | 12.57 | 12.31 | 14.98 | 14.9 | 10.64 |
| SO₂ | 8.22 | 5.68 | 6.3 | 4.39 | 2.38 | 3.01 | 3.45 | 3.09 | 2.98 | 3.63 | 2.87 | 2.61 | 4.03 | 3.9 | 3.09 |
| CO | 449.84 | 289.99 | 271.21 | 187.73 | 148.9 | 241.35 | 230.18 | 193.13 | 194.86 | 237.82 | 229.02 | 213.55 | 234.35 | 224.17 | 189.61 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Canada
Canada - air pollution history (2016-03 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 3.47 2018-09Highest 6.83 2017-012016-03 - 2020-05
PM10Lowest 5.29 2020-01Highest 20.7 2016-052016-03 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 3.9 | 4.67 | 5.18 | 5.85 | 5.02 | 5 | 4.96 | 4.24 | 4.22 | 4.9 | 5.63 | 4.8 | 4.5 | 4.55 | 6.06 | 5.7 | 5.23 | 6.17 | 5.07 | 4.52 | 3.47 | 6.65 | 5.21 | 4.33 | 5.68 | 5.18 | 5 | 5.94 | 6 | 5.88 | 5.75 | 5 | 5.76 | 6.42 | 6.03 | 4.95 | 4.5 | 4.7 | 5.59 | 6.43 | 6.83 | 6.35 | 6.37 | 4.92 | 3.71 | 4.73 | 5.02 | 4.46 | 4.81 | 5.26 | 4.8 |
| PM10 | 6.7 | 6.67 | 8.13 | 7.17 | 5.29 | 6.71 | 12.5 | 8.01 | 7.19 | 11.5 | 9.76 | 9.35 | 11.3 | 9.42 | 11.5 | 9.52 | 6.84 | 5.56 | 7.26 | 8.8 | 6.84 | 14.7 | 13.3 | 9.21 | 13.2 | 10.3 | 9 | 6.33 | 5.4 | 6.17 | 6.1 | 8.5 | 10.2 | 16.1 | 12.1 | 9.55 | 11.2 | 9.05 | 8.19 | 11 | 8.96 | 8.57 | 8.25 | 7.96 | 10.2 | 11.4 | 10.8 | 11.7 | 20.7 | 19.1 | 10.6 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Environment and quality of life ratings · Canada
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Canada | United States | Saint Pierre and Miquelon | The Bahamas | Venezuela | Iceland |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 77% | 70% | — | 50% | 41% | 72% |
| Pleasure of spending time in the city | 79% | 75% | — | 53% | 41% | 89% |
| Air Pollution | 24% | 29% | — | 52% | 59% | 13% |
| Garbage Disposal | 74% | 71% | — | 29% | 18% | 79% |
| Availability and quality of drinking water | 82% | 71% | — | 55% | 28% | 96% |
| Cleanliness and tidiness | 66% | 60% | — | 35% | 22% | 75% |
| Noise and Light pollution | 42% | 47% | — | 39% | 47% | 23% |
| Water Pollution | 35% | 44% | — | 58% | 76% | 8.4% |
WEATHER & SURROUNDINGS
Canada · weather forecast
Daily maximum and minimum temperatures. Forecast point: 56.1304, -106.3468.
Scroll the forecast to see the following days.
Canada · October 20, 2026: minimum temperature 2°C, maximum 9.3°C. Wind: 15 km/h. Humidity: 61%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-20 | 7.8 | 2 | 9.3 | 4.2 | 2.5 | 4.2 | 61 | 3 |
| 2026-10-21 | 10.5 | 2.6 | 13 | 5.8 | 1.8 | 4.9 | 42 | 21 |
| 2026-10-22 | 10.7 | 3.4 | 12.8 | 4.6 | 1.5 | 2.6 | 48 | 1 |
| 2026-10-23 | 5.6 | 0.2 | 6.2 | 0.2 | 1.1 | 6 | 68 | 100 |
| 2026-10-24 | -4.7 | -5.1 | -0.1 | -4.9 | 1.2 | 9 | 92 | 100 |
| 2026-10-25 | -3.4 | -13 | -2.6 | -13 | 0.6 | 7.5 | 86 | 100 |
| 2026-10-26 | -2.1 | -14.8 | -0.2 | -4.9 | 0.5 | 3.6 | 88 | 94 |
| 2026-10-27 | -1.7 | -7.4 | -0.1 | -6.9 | 2.9 | 3.8 | 87 | 40 |
| 2026-10-28 | -0.1 | -11.1 | 0.7 | -6.1 | — | 3.4 | 87 | 90 |
| 2026-10-29 | 0 | -9.1 | 1 | -1.1 | 0.1 | 2.9 | 92 | 100 |
| 2026-10-30 | 0.5 | -2.5 | 1.4 | -2.5 | — | 4.5 | 96 | 100 |
| 2026-10-31 | -1.8 | -8.3 | -0.2 | -8.3 | — | 4.2 | 84 | 53 |
| 2026-11-01 | -3.8 | -5.6 | -2.7 | -5.5 | 0.2 | 5.7 | 82 | 100 |
| 2026-11-02 | -6 | -12.6 | -5.5 | -12.6 | — | 5.1 | 80 | 77 |
| 2026-11-03 | -1.8 | -12.1 | -0.1 | -1.2 | — | 3.6 | 90 | 100 |
| 2026-11-04 | -7.4 | -10.9 | -2.4 | -10.9 | — | 5.9 | 93 | 100 |
| 2026-11-05 | -9 | -19.2 | -6.9 | -7 | — | 2.9 | 88 | 96 |
UV index by day · Canada
Data for a country reference point. Local conditions may differ.
You can safely stay in the sun. Sunscreen only matters on very long exposure.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Canada · October 22, 2026: UV index: 2.1 .
| Indicator | 2026-10-22 | 2026-10-23 | 2026-10-24 | 2026-10-25 | 2026-10-26 | 2026-10-27 | 2026-10-28 | 2026-10-29 | 2026-10-30 | 2026-10-31 | 2026-11-01 | 2026-11-02 | 2026-11-03 | 2026-11-04 | 2026-11-05 | 2026-11-06 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 2.1 | 1.7 | 1.1 | 2 | 1.9 | 1.9 | 1.8 | 1.9 | 1.8 | 1.6 | 1.6 | 1.6 | 1 | 1.3 | 0.8 | — |
AIR QUALITY QUESTIONS
Canada · air pollution - questions and answers
What do the latest air quality data show for Canada?
Canada - average concentrations across available points: PM2.5: 8.2 µg/m³, PM10: 8.6 µg/m³, O₃: 51.3 µg/m³, NO₂: 18.4 µg/m³, SO₂: 3.8 µg/m³, CO: 294.4 µg/m³. Date range: October 22, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in Canada over the past week?
The highest available daily mean PM2.5 was 11.2 µg/m³ (October 21, 2026). This comparison covers 7 days with data in the seven days before October 22, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in Canada have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Ottawa (1.2 µg/m³). Highest PM2.5: Edmonton (29.5 µg/m³). This comparison covers 20 cities on October 22, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
What period does the pollution history for Canada cover?
Available monthly means cover 2016-03 - 2020-05. The tables include PM2.5, PM10. Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Canada an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Canada?
For October 22, 2026, the forecast UV index is 2.1. The UV section also shows the following available days.
What wind speed is forecast for Canada?
For October 20, 2026, forecast wind speed is 15 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.