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Navigation tip: find out about sources of air quality pollutants and seasonal air quality patterns in this town by selecting the town name above. View regional summary results by selecting Air Quality.

Nelson at Brook

Nelson Centre/North comprises of mainly residential areas along a narrow coastal strip crossed by numerous small valleys which drain air from the hills to the sea. It has one PM10 monitoring site which produces daily averages, so no hourly data are available. Daily data can be viewed by selecting Show more information + and a minimum time period of 6 months.

PM10 monitoring is undertaken using a Partisol 2000 gravimetric monitor which samples every second day in winter and 1 day in 6 over summer, There can be a delay of up to a month in reporting data from this site to enable time for filter delivery and analysis. There is no meteorological equipment located at this site. The main sources of PM10 in Nelson Centre/North are from domestic home heating with a small secondary contribution from transport and natural sources such as marine aerosol. The small coastal valleys in the area tend to drain the cold sinking air from the coastal hills to sea taking some of the PM10 with it. Nelson Centre/North is considered to currently comply with the requirements of the National Environmental Standards for air quality.

Scientific Indicators
Scientific data for this site

This dashboard shows the latest results for air quality indicators collected by regional councils and unitary authorities.  Indicators are shown against the National Environmental Standards for Air Quality (NES-AQ).  Where no national standards exist for the air quality measurements shown, the data are compared against other guidelines (e.g. World Health Organization (WHO) 2021 guidelines, Ambient Air Quality Guidelines (AAQG)).  

Select 'Show more information +' under a dashboard to see the current and historical monitoring data.

 

  • PM10
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    • Exceedance
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    PM10 information

    • Hourly
    • Daily
    • Monthly
    • Annual
    • Exceedances
    • Show wind speed
    • Show temperature
    Months:
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    Showing:

    Guideline

    Concentration (µg/m3)

    Wind speed (km/h)

    Air temperature (℃)

    Guideline

    What is this graph showing me?

    This graph shows how concentrations of PM10 change on an hourly, daily, monthly or annual basis for the selected time period. The number of exceedance days can be viewed over the last 10 years or all years if available.

    The PM10 daily average concentrations and exceedance days are compared to the National Standard (NES-AQ), and the PM10 annual average concentrations are compared to the WHO guideline.  The standard and guideline limits are denoted by the red horizontal line.   There are no guidelines for hourly or monthly average concentrations.  For information about allowable exceedances and targets, and the limitations of data shown, see the factsheet on monitoring air quality in New Zealand. 

    The concentrations depend on local sources of emissions and weather conditions. 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 go 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.  At some monitoring sites, the hourly temperature and wind data are available to explore the relationship between local weather conditions and PM10 concentrations.  See this factsheet about why air quality is important and factors that influence air quality. 

     Download data