PM25 INDEX FORECAST

Hour 2 5 8 11 14 17 20 23
Index

2 5 8 11 14 17 20 23

2 5 8 11 14 17 20 23

2 5 8 11 14 17 20 23

2 5 8 11 14 17 20 23

2 5 8 11 14 17 20 23

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Legend and Meta Data

Outdoor Air Quality
Indicator Category
Indicator Value
Good 0 - 15.4
Moderate 15.5 - 40.4
Unhealthy for Sensitive Groups 40.5 - 65.4
Unhealthy 65.5 - 150.4
Very Unhealthy 150.5 - 250.4
Hazardous 250.5 - 500

Saharan dust is a mixture of sand and dust from the Sahara

The products, images and information provided here may be used solely for public weather services and may not be used for commercial purposes. The Meteorological Services Division (MSD) of Trinidad and Tobago cannot guarantee that the data are correct in all circumstances. Neither do the MSD accept any liability whatsoever for any error or omission in the data, or for any loss or damage arising from its use. This product, data or information must not be supplied as a whole or in part to any third party without prior authorization.

This Sahara Dust Haze Index Forecasts and Air Quality Index forecasts products have been designed, tailored to the needs of the society and are generated by the Meteorological Services Division of Trinidad and Tobago, in collaboration with the Caribbean Institute of Meteorology and Hydrology (CIMH).

Forecast and warning levels are generated and computed from the CIMH advanced WRF-Chem regional numerical model prediction system working on a 25 km grid resolution. The forecast represents the air quality without localized sources of pollution, such as bushfires. The Sahara Dust Haze Index is determined from the PM10 µg/m3 maximum concentration over Trinidad and Tobago in 24 hours. The Air Quality Index is determined from the PM2.5 µg/m3 maximum concentration over Trinidad and Tobago in 24 hours.

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