Fine particles
6.2µg/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: 6.2 µg/m³, PM10: 6.5 µg/m³, O₃: 50.8 µg/m³, NO₂: 20.4 µg/m³, SO₂: 3.8 µg/m³, CO: 268.7 µg/m³. Date range: September 25, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Okanagan (1.9 µg/m³). Highest PM2.5: Québec (18.2 µg/m³). This comparison covers 20 cities on September 25, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →
2 weather warnings in effect for Canada
All cities · Canada
20 citiesCanada↗
Toronto
PM2.55.1
PM105.1
µg/m³
PM2.5 · FairNO₂ 29O₃ 54
September 25, 202621:00
Canada↗
Montréal
PM2.59.1
PM109.4
µg/m³
PM2.5 · FairNO₂ 37.3O₃ 40
September 25, 202621:00
Canada↗
Vancouver
PM2.55.3
PM106.1
µg/m³
PM2.5 · FairNO₂ 13.5O₃ 62
September 25, 202618:00
Canada↗
Calgary
PM2.52.4
PM102.5
µg/m³
PM2.5 · GoodNO₂ 6.5O₃ 82
September 25, 202619:00
Canada↗
Ottawa
PM2.57.9
PM108.2
µg/m³
PM2.5 · FairNO₂ 32.4O₃ 25
September 25, 202621:00
Canada↗
Edmonton
PM2.59.3
PM109.6
µg/m³
PM2.5 · FairNO₂ 27O₃ 20
September 25, 202619:00
Canada↗
Mississauga
PM2.55.1
PM105.1
µg/m³
PM2.5 · FairNO₂ 29O₃ 54
September 25, 202621:00
Canada↗
Winnipeg
PM2.55.5
PM105.7
µg/m³
PM2.5 · FairNO₂ 7.8O₃ 52
September 25, 202620:00
Canada↗
Québec
PM2.518.2
PM1018.2
µg/m³
PM2.5 · ModerateNO₂ 54.3O₃ 6
September 25, 202621:00
Canada↗
Hamilton
PM2.56.1
PM106.1
µg/m³
PM2.5 · FairNO₂ 27.2O₃ 51
September 25, 202621:00
Canada↗
Brampton
PM2.55.1
PM105.1
µg/m³
PM2.5 · FairNO₂ 29O₃ 54
September 25, 202621:00
Canada↗
Kitchener
PM2.53.4
PM103.4
µg/m³
PM2.5 · GoodNO₂ 17.2O₃ 53
September 25, 202621:00
Canada↗
Surrey
PM2.56.7
PM107.3
µg/m³
PM2.5 · FairNO₂ 15.8O₃ 56
September 25, 202618:00
Canada↗
Halifax
PM2.54.9
PM105.1
µg/m³
PM2.5 · GoodNO₂ 7.1O₃ 57
September 25, 202622:00
Canada↗
London
PM2.57.3
PM107.3
µg/m³
PM2.5 · FairNO₂ 23.9O₃ 45
September 25, 202621:00
Canada↗
Okanagan
PM2.51.9
PM102
µg/m³
PM2.5 · GoodNO₂ 2O₃ 68
September 25, 202618:00
Canada↗
Victoria
PM2.58.2
PM1011.6
µg/m³
PM2.5 · FairNO₂ 2O₃ 77
September 25, 202618:00
Canada↗
Markham
PM2.52.7
PM102.7
µg/m³
PM2.5 · GoodNO₂ 14.8O₃ 53
September 25, 202621:00
Canada↗
Buffalo
PM2.56.3
PM106.3
µg/m³
PM2.5 · FairNO₂ 15.9O₃ 63
September 25, 202621:00
Canada↗
Oshawa
PM2.52.5
PM102.6
µg/m³
PM2.5 · GoodNO₂ 15.5O₃ 44
September 25, 202621:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Canada
Particulate matter
6.5µg/m³Ozone
50.8µg/m³Nitrogen dioxide
20.4µg/m³Sulphur dioxide
3.8µg/m³Carbon monoxide
268.7µg/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 - 2026-09-24)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 5.92 2026-09-05Highest 12.85 2026-09-012026-08-30 - 2026-09-24
PM10Lowest 6.13 2026-09-05Highest 13.2 2026-09-012026-08-30 - 2026-09-24
O₃Lowest 48.34 2026-09-24Highest 68.64 2026-09-012026-08-30 - 2026-09-24
NO₂Lowest 10.56 2026-09-05Highest 17.51 2026-09-242026-08-30 - 2026-09-24
SO₂Lowest 2.61 2026-09-02Highest 4.18 2026-09-202026-08-30 - 2026-09-24
COLowest 189.61 2026-08-30Highest 292.61 2026-09-242026-08-30 - 2026-09-24
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 2026-09-19 | 2026-09-18 | 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 | 8.54 | 10.28 | 6.78 | 7.66 | 8.64 | 6.76 | 8.02 | 7.87 | 5.92 | 8.76 | 7.3 | 8.25 | 12.85 | 8.21 | 6.46 |
| PM10 | 8.91 | 10.89 | 7.08 | 8.18 | 8.91 | 7.02 | 8.32 | 8.17 | 6.13 | 9.44 | 7.94 | 8.67 | 13.2 | 8.48 | 7 |
| O₃ | 48.34 | 52.52 | 51.45 | 52.04 | 51.52 | 49.83 | 55.08 | 53.09 | 56.31 | 52.48 | 63.55 | 64.04 | 68.64 | 60.29 | 62.11 |
| NO₂ | 17.51 | 14.17 | 11.54 | 12.22 | 13.9 | 11.53 | 14.32 | 11.62 | 10.56 | 15.25 | 12.57 | 12.31 | 14.98 | 14.9 | 10.64 |
| SO₂ | 3.96 | 3.45 | 3.28 | 3.03 | 4.18 | 3.26 | 3.37 | 3.09 | 2.98 | 3.63 | 2.87 | 2.61 | 4.03 | 3.9 | 3.09 |
| CO | 292.61 | 242.33 | 189.99 | 197.67 | 211.28 | 196.66 | 238.96 | 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 · September 23, 2026: minimum temperature 7.7°C, maximum 20.5°C. Wind: 11.3 km/h. Humidity: 32%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-23 | 18.3 | 7.7 | 20.5 | 11.9 | 2.1 | 3.2 | 32 | 5 |
| 2026-09-24 | 15.5 | 8.4 | 17.6 | 9.3 | 0.9 | 4.6 | 50 | 60 |
| 2026-09-25 | 15.6 | 8.5 | 18.6 | 17 | 0.1 | 8.4 | 42 | 100 |
| 2026-09-26 | 17.4 | 5.7 | 18 | 5.7 | 0.2 | 8.5 | 54 | 82 |
| 2026-09-27 | 10.6 | 4.9 | 13.4 | 7.1 | 0.8 | 8.2 | 42 | 72 |
| 2026-09-28 | 12.2 | 3.3 | 14.6 | 8.2 | 2 | 5.3 | 49 | 7 |
| 2026-09-29 | 12.1 | 6.4 | 16.5 | 8.4 | 1 | 4.6 | 45 | 100 |
| 2026-09-30 | 8.8 | 1.6 | 9.2 | 1.6 | 0.8 | 6.4 | 58 | 100 |
| 2026-10-01 | 1.5 | -0.8 | 2.5 | 0.5 | 1.1 | 6 | 62 | 99 |
| 2026-10-02 | 4.4 | -3.6 | 6.5 | -0.8 | 3.8 | 3 | 50 | 41 |
| 2026-10-03 | 4.1 | -2.7 | 5.6 | -1.4 | 0.2 | 3.7 | 43 | 12 |
| 2026-10-04 | 6.2 | -2.7 | 8.1 | 2.5 | 0.2 | 3.8 | 54 | 100 |
| 2026-10-05 | 4.6 | 1.1 | 7.5 | 3.5 | 5.2 | 2.5 | 72 | 98 |
| 2026-10-06 | 14.3 | 3.2 | 15 | 4.9 | 0.4 | 6.8 | 58 | 44 |
| 2026-10-07 | 10.3 | 0.9 | 16.6 | 14 | 0.2 | 5.8 | 57 | 79 |
| 2026-10-08 | 15.3 | 9.4 | 16.6 | 9.4 | — | 5.4 | 46 | 44 |
| 2026-10-09 | 14.6 | 7.6 | 18 | 12.6 | — | 5 | 55 | 100 |
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 · September 25, 2026: UV index: 2.9 .
| Indicator | 2026-09-25 | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 2.9 | 3.1 | 3.3 | 3.3 | 2.4 | 2 | 1.5 | 2.9 | 2.9 | 2.4 | 1.5 | 2.9 | 2.8 | 2.8 | 2.3 | — |
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: 6.2 µg/m³, PM10: 6.5 µg/m³, O₃: 50.8 µg/m³, NO₂: 20.4 µg/m³, SO₂: 3.8 µg/m³, CO: 268.7 µg/m³. Date range: September 25, 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 10.3 µg/m³ (September 23, 2026). This comparison covers 7 days with data in the seven days before September 25, 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: Okanagan (1.9 µg/m³). Highest PM2.5: Québec (18.2 µg/m³). This comparison covers 20 cities on September 25, 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 September 25, 2026, the forecast UV index is 2.9. The UV section also shows the following available days.
What wind speed is forecast for Canada?
For September 23, 2026, forecast wind speed is 11.3 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.