This dashboard shows information on the data collected by the regional councils for air quality scientific indicators:
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PM10
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Hourly average
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Daily average
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Monthly average
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Annual average
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Show more information Hide informationWhat do the dashboard colours mean for PM10?
The dashboard colours show how PM10 levels sit in relation to the guideline – from green (less than 10%) to red (more than 100% of the guideline). The guideline (100%) value for the daily average PM10 is 50 µg/m3 and 20 µg/m3 for the annual average. There are no guidelines for hourly or monthly data (charcoal colour).
Colour Percent of guidelines Less than 10% of guideline 10-33% of guideline 33-66% of guideline 66-100% of guideline Greater than 100% of guideline No guideline PM10 information
- Hourly
- Daily
- Monthly
- Annual
- Exceedances
- Show wind speed
- Show temperature
Months:Showing:Guideline
Concentration (µg/m3)
Wind speed (km/h)
Air temperature (℃)
What is this graph showing me?
This graph shows how levels of PM10 change on an hourly, daily, monthly or annual basis for the selected time period. The levels depend on local sources of emissions and what the weather is doing. Emissions from various sources change, depending on whether it’s a weekday or the weekend or at different times of the year (e.g. emissions from home heating goes up in the cold winter months). Still conditions often lead to high concentrations, as there is no wind to blow away the pollutants in the air. The PM10 concentrations are shown against the guidelines for air quality (for daily and annual averages), and where concentrations exceed the guideline (red line) this can be a cause for concern, especially if this occurs on a frequent basis.
Exceedance data (when available) shows the number of days per year that the concentrations went above 100% of the air quality guideline.
For information about allowable exceedances and targets, and the limitations of data shown, see the Factsheet on monitoring air quality in New Zealand.
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Benzene
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Hourly average
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Daily average
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Monthly average
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Annual average
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Show more information Hide informationWhat do the dashboard colours mean for benzene?
The dashboard colours show how benzene levels sit in relation to the guideline - from green (less than 10%) to red (over the guideline). The guideline for annual average benzene is 3.6 µg/m3. There are no guidelines for hourly, daily, or monthly data for benzene (charcoal colour) and generally monitoring is for a three month period to get an annual average.
Colour Percent of guidelines Less than 10% of guideline 10-33% of guideline 33-66% of guideline 66-100% of guideline Greater than 100% of guideline No guideline Benzene information
- Hourly
- Daily
- Monthly
- Annual
- Show wind speed
- Show temperature
Months:Showing:Guideline
Concentration (µg/m3)
Wind speed (km/h)
Air temperature (℃)
What is this graph showing me?
This graph shows how levels of benzene change on a hourly, daily, monthly or an annual basis for the selected time period. The levels depend on local sources of emissions and what the weather is doing. Emissions from various sources change, depending on whether it’s a weekday or the weekend or at different times of the year (e.g. emissions from home heating goes up in the cold winter months). Still conditions often lead to high concentrations, as there is no wind to blow away the pollutants in the air. The benzene concentrations are shown against the guidelines for air quality (annual averages), and where concentrations exceed 100% of the guideline (red line) this can be a cause for concern, especially if this occurs on a frequent basis.
For information about the limitations of data shown, see the Factsheet on monitoring air quality in New Zealand.
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