In Waimate, most of the PM is from the burning of wood or coal for home heating. Other outdoor sources of PM are motor vehicles, industrial and commercial processes, and natural sources. PM concentrations are highest during winter evenings, when temperatures are coldest and there is little wind.
Seasonal variation
- Show wind speed
- Show temperature
PM10 |
PM2.5 |
Wind speed (km/h) |
Air temperature (℃) |