Ozone (O₃) concentration in Canada
Canada: Ozone (O₃) concentration was 57 ppb in 2015. ▬ Flat
Ozone (O₃) concentration in Canada, 1990–2015
Source: Health Effects Institute (2017) – processed by Our World in Data. Measured in ppb.
Analysis
In 2015, ozone (o₃) concentration in Canada stood at 57 ppb. That is the lowest value across all 7 years on record.
Compared with earlier readings it is unchanged over ten years.
Over the whole period, ozone (o₃) concentration in Canada peaked at 58 ppb in 1990 and was at its lowest, 57 ppb, in 2005.
That places Canada 83rd out of 187 countries with data for 2015, putting it in the middle of the range.
Ozone (O₃) concentration in Canada, year by year
| Year | ppb | Change |
|---|---|---|
| 1990 | 58 ppb | — |
| 1995 | 58 ppb | +0.0% |
| 2000 | 58 ppb | +0.0% |
| 2005 | 57 ppb | -1.7% |
| 2010 | 57 ppb | +0.0% |
| 2013 | 57 ppb | +0.0% |
| 2015 | 57 ppb | +0.0% |
Canada compared with similar countries
- Canada's 57 ppb is above the median for high income countries, which is 55 ppb, 1.0× the median. (59 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 58 ppb | 58 ppb | 58 ppb | 2 |
| 2000s | 57.5 ppb | 57 ppb | 58 ppb | 2 |
| 2010s | 57 ppb | 57 ppb | 57 ppb | 3 |
Countries ranked near Canada
More environment data for Canada
- Historical exposure to drought — Land soil moisture anomaly -2.52 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -6.76 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.642 °C (2025)
- Temperature change 2.96 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 1.7 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate -0.3398 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is ozone (o₃) concentration in Canada?
- Ozone (o₃) concentration in Canada was 57 ppb in 2015, according to Health Effects Institute (2017) – processed by Our World in Data.
- What is the highest ozone (o₃) concentration recorded in Canada?
- The highest recorded value was 58 ppb in 1990.
- What is the lowest ozone (o₃) concentration recorded in Canada?
- The lowest recorded value was 57 ppb in 2005.
- How does Canada rank for ozone (o₃) concentration?
- Canada ranks 83rd out of 187 countries with data for 2015.
- Is ozone (o₃) concentration rising or falling in Canada?
- Over the last ten years it is unchanged. The long-run trend across the full record is flat.
- Where does this Canada data come from?
- The figures come from Health Effects Institute (2017) – processed by Our World in Data, published as part of Ozone (O₃) concentration. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 7 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Population-weighted average ozone (O₃) concentrations in parts per billion (ppb). Local concentrations of ozone are recorded and estimated at a 11x11km resolution. These values are subsequently weighted by population-density for calculation of nation-level average concentrations.