Saharan Dust Concentrations Forecast To Fluctuate Across T&T Over Next 7 Days

Air quality levels are gradually improving across Trinidad and Tobago as Tropical Wave 04 nears the region. However, over the next several days, Saharan Dust concentrations are forecast to fluctuate across Trinidad and Tobago due to the passage of a low-level trough on Wednesday and Tropical Wave 05 on Friday into Saturday. Further north, moderate to high concentrations will continue to persist in the remainder of the Lesser Antilles.

What you need to know

— Saharan Dust Surges: The significant surge of Saharan Dust is moving away from Trinidad and Tobago, with still moderate to high concentrations but decreasing through tonight (Monday night), While improvement is forecast through the week, generally mild to moderate Saharan Dust levels are expected across T&T, even with rainfall episodes over the next seven days.
— Impacts: Air quality is expected to gradually improve over the next 24 hours, returning to moderate levels by Tuesday and generally remaining between good and moderate levels thereafter through June 18th.
What Should You Do: Throughout the forecast period, mainly from Tuesday, unusually sensitive groups are advised to take necessary precautions.

Current AQI Levels Across T&T

As of 4:00 PM, June 9th, 2025, the official air quality monitoring stations from the Environmental Management Agency (EMA) at Beetham outside of Port of Spain, Point Lisas, and San Fernando report air quality that are unhealthy for sensitive groups while all other stations (Signal Hill, Toco, Arima) are not currently transmitting PM2.5 or PM10 data.

Unofficial air quality monitoring stations at Longdenville and Woodbrook report air quality levels that are good to moderate.

These measurements are based on PM2.5 (particulates smaller than 2.5 micrometers in size, typically associated with increases in Saharan Dust, vehicle exhaust, and smoke) and PM10 particulates.

Outside of rainfall, visibility, used as a proxy for Saharan Dust concentrations, at the A.N.R. Robinson International Airport at Crown Point, Tobago, and Piarco, fluctuates between 6 and 10 kilometers.

Saharan Dust Forecast For T&T

Air quality forecast for Trinidad and Tobago, based on Saharan Dust concentrations over the next seven days.

Remainder of June 9th through June 10th: High but decreasing concentrations of Saharan Dust with air quality and visibility degraded. Air quality levels are likely to improve from unhealthy for sensitive groups to moderate. Horizontal visibility outside of rainfall is expected to range from 8 to 10 kilometers.

June 10th through June 19th: Mild to moderate concentrations of Saharan Dust with air quality generally at good to moderate levels. Visibility marginally affected.

00Z Monday, June 9th, 2025, NASA GEOS-5 Dust Extinction Monitoring Tropical Atlantic Dust Aerosol Optical Depth showing Saharan Dust. (Weathermodels.com)

What does this mean for you?

Beyond June 10th, air quality is forecast to remain generally at moderate levels, with only the most sensitive groups marginally affected.

We’re now in a period where the Intertropical Convergence Zonetropical waves, and occasional tropical cyclones may shield Trinidad and Tobago from the Saharan Dust events. While tropical waves are notable in moving dust across the Atlantic and the Eastern Caribbean, these periodic tropical waves also improve air quality.

Peak dust concentrations climatologically occur during June across the Main Development Region of the Atlantic, just east of Trinidad and Tobago.

Climatological average of Saharan Dust cover across the Main Development Region of the Atlantic Ocean, east of Trinidad and Tobago. (Photo: Michael Lowry/NASA)

The concentration of the dust that follows the wave depends on its strength as it moves off the West African Coast. This is because of stronger thunderstorms across Central Africa. As strong winds move downward and outward from these thunderstorms, they kick up dust as they move across parts of the Saharan Desert and transport it into the upper atmosphere. This “plume” of dust follows the axis of the wave as it progresses westward into the Atlantic.

Dust that enters the upper levels of the atmosphere can then be transported across the Atlantic Ocean. The plumes of dust eventually affect the Eastern Caribbean.

Larger, more concentrated plumes of Saharan dust begin in April and continue through November.

Read More

Staying Safe From Saharan Dust

Believe it or not, Saharan Dust can be present in T&T year-round. Concentrations wax and wane depending on prevailing weather features in the area. It also depends on if there are…

The Air Quality Index

In all of our Saharan Dust forecasts, we use the Air Quality Index (AQI) to quickly surmise the possible impacts on the population. What is the Air Quality Index? The AQI is an index for…

Total
0
Shares
Related Posts
Total
0
Share
perihoki perihoki perihoki perihoki perihoki duta76 duta76 duta76 duta76 duta76 Bagaimana satu spin mengguncang saldo Mahjong buktikan satu scatter hitam ubah kekalahan jadi kemenangan Paduan spin cepat delay pemicu lonjakan saldo Pola spin baru jadi kunci kelancara main Subuh tenang hadirkan scatter hitam lebih cepat Hanya sekali spin langsung raih berkah Hemat modal jadi senjata utama menang scatter hitam Mahjong hadirkan cara baru menang lewat rtp ajaib Main mahjong di mobil road trip langsung disambut scatter hitam Scatter berlipat akun pro buka jalan Mengapa mahjong sering keluarkan scatter hitam Saat terbaik scatter hitam hadir Scatter hitam tak lagi langka spin selang seling buka jalan Scatter terungkap lewat tantangan yang menguji pemain Tips bermain mahjong dengan pola simpel menguntungkan spin manual 15x olympus duta76 pasti gacor banget trik scatter wild starlight princess x1000 saldo melejit duta7 tak sadar bisa menang sebesar itu di duta76 pgsoft mahjong ways 2 fitur terbaru pgsoft mahjong ways 2 duta76 bisa trigger free spin pola unik duta7 jadi andalan pemain mahjong wins 3 Bagaimana satu spin mengguncang saldo Mahjong buktikan satu scatter hitam ubah kekalahan jadi kemenangan Paduan spin cepat delay pemicu lonjakan saldo Pola spin baru jadi kunci kelancara main Subuh tenang hadirkan scatter hitam lebih cepat Hanya sekali spin langsung raih berkah Hemat modal jadi senjata utama menang scatter hitam Mahjong hadirkan cara baru menang lewat rtp ajaib Main mahjong di mobil road trip langsung disambut scatter hitam Scatter berlipat akun pro buka jalan Mengapa mahjong sering keluarkan scatter hitam Saat terbaik scatter hitam hadir Scatter hitam tak lagi langka spin selang seling buka jalan Scatter terungkap lewat tantangan yang menguji pemain Tips bermain mahjong dengan pola simpel menguntungkan