Air quality across all four districts remained moderate as of 9am Mondau, with Temburong recording the highest Pollutant Standards Index (PSI) reading at 72.
According to the Department of Environment, Parks and Recreation (JASTRe), Brunei-Muara recorded a PSI of 63, followed by Tutong at 66 and Belait at 57.
A PSI reading of 51 to 100 indicates moderate air quality, while readings of 101 to 200 are classified as unhealthy.
Since September 1, JASTRe has incorporated fine particulate matter (PM2.5) concentrations into Brunei Darussalam’s PSI reporting.
The World Health Organization defines PM2.5 as fine particulate matter with a diameter of less than 2.5 micrometres. These particles can penetrate deep into the lungs and enter the bloodstream, potentially affecting the cardiovascular and respiratory systems.
JASTRe continues to monitor air quality nationwide and will issue PSI updates five times daily at 7am, 9am, 11am, 2pm and 4pm during the hazy period.
SOURCE/AUTHOR : BORNEO BULLETIN
Venues
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Audience Ceremony with Coordinating Minister for Public Affairs and Minister for Defence, Republic of Singapore
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His Royal Highness receives in Audience Coordinating Minister for Public Affairs and Minister for Defence, Republic of Singapore
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Congratulatory Messages on Occasion of Malaysia's 68th Anniversary of Independence Day
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Congratulatory Messages on the Occasion of the Socialist Republic of Viet Nam's National Day 80th Anniversary
National
Registration for National Level Musabaqah Al-Qur'an Memorisation and Its Understanding 1447 Hijrah
National
Course Closing Ceremony, Pengiran Anak Puteri Muta-Wakkilah Hayatul Bolkiah Religious School
National
Tahlil Ceremony in conjunction with 50th Anniversary of Brunei Arts and Handicrafts Training Centre
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Congratulatory Messages on the occasion of Kingdom of Saudi Arabia's 95th National Day
National
Inauguration Of Establishment of Johor Islamic Religious Council & Multaqa Ulama' Darul Ta'zim
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Congratulatory Message on the Occasion of Republic of Korea's National Foundation Day
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Doa Kesyukuran Ceremony in conjunction with Her Majesty Duli Raja Isteri's Birthday Celebration
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Audience Ceremony with The Secretary of National Defence of the Republic of the Philippines
National
Khatam Al-Qur'an Ceremony in conjunction with Birthday Celebration of Her Majesty Duli Raja Isteri
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Audience Ceremony with Spouse of the Chief of Staff of the Armed Forces of the Philippines
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Doa Kesyukuran Ceremony in conjunction with the Birthday Celebration of Her Majesty Duli Raja Isteri
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Khatam Al-Qur'an Ceremony in conjunction with the Ruby Jubilee of the Islamic Da'wah Centre
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Minister of Foreign Affairs of the Lao People’s Democratic Republic Audience Ceremony
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Prizes Presentation, National Preliminary Musabaqah Al-Qur'an Reading Competition for Adults
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Khatam Al-Qur'am Ceremony in conjunction with the 50th anniversary of Television Services, RTB
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Congratulatory Message on the occasion of the Republic of Turkiye's 102nd Republic Day
National
Sales Festival in conjunction with the Farmers, Livestock Breeders and Fishermen Day Celebration
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Message of Condolences following the Tragic Incident of a Turkish Military Cargo Plane Crash
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RB awarded 2026 APEX Four Star Major Airline & 2026 APEX Best in Seat Comfort Award for East Asia
National
Meeting of the Steering Committee with the Sectoral Committees for the Diamond Jubilee Celebrations
National
Silver Jubilee Celebration, 25th Anniversary of Yayasan Sultan Haji Hassanal Bolkiah Mosque
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His Royal Highness Prince Haji Sufri Bolkiah watches Fencing Event of Islamic Solidarity Games 2025
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His Royal Highness Prince Haji Sufri Bolkiah presents the Gold Medals, Islamic Solidarity Games 2025
National
Certification Application for Religious Teaching, Al-Qur'an, and Lectures 1st Session of 2026
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Senior Minister of State, Ministry of Home Affairs Republic of Singapore Audience Ceremony
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Ambassador Extraordinary and Plenipotentiary of the People's Republic of China Audience Ceremony
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Senior Minister of State, Ministry of Home Affairs Republic of Singapore Audience Ceremony
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Ambassador Extraordinary and Plenipotentiary of the People’s Republic of China Audience Ceremony
National
Launching of Guideline Book on Addressing Harassment at the Workplace in the Public Service
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Messages of Condolences following the recent fire at Wang Fuk Court Residential Complex
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Congratulatory Messages on the occasion of the National Day of the Kingdom of Thailand
Sports
Nine To Four Run in conjunction with 'Ke Temburong Bisai Programme: Borneo Bike Gathering Edition'
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Message of Condolences following the Terrorist Attack at Bondi Beach, Sydney, Australia
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Their Majesties will attend a Get-Together Ceremony with Citizens and Residents in United Kingdom and Ireland
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Get-Together Ceremony with Citizens and Residents of Brunei in United Kingdom and Ireland
National
Doa Kesyukuran Ceremony in conjunction with the 42nd Anniversary of Kampung Sungai Besar Mosque
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Message of Congratulations on the occasion of Republic of the Union of Myanmar's 78th Independence Day
School
Working Visit by Ministry of Religious Affairs Delegation for the Admission of Sanah 5 Students
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Exhibition Match in conjunction with Peak x UNIKLEARN Pickleball Charity Championship 2026
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His Majesty will be Taking Rest, Limited Presence at National and Official Ceremonies
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Sovereign's Parade Ceremony of the 24th Intake of the Officer Cadet School, Defence Academy, RBAF
National
Discipline and Self-Resilience are the Core of the Success of 24th Intake of Officer Cadets
National
Sunat Hajat Prayer, Reading of Surah Yasin and Special Doa, Brunei Darussalam Students Overseas
National
Official Academic Visit by Muslim Scholars Association of Malaysia at Islamic Da'wah Centre
National
Commemorative Products Press Conference in conjunction with Diamond Jubilee Wedding Anniversary
School
Brunei-Cambridge G.C.E. 'O' Level and IGCSE Examination Results for October/November 2025 Session
National
Agreement Signing between Warisan Shipping Line and DP World Logistics Malaysia Sendirian Berhad
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Message of Congratulations on Occasion of the Islamic Republic of Iran's National Day
National
Tahlil Ceremony and Appointment Letter Presentation, Jubli Perak Sultan Haji Hassanal Bolkiah Mosque
National
Presentation of Appreciation Certificates and Apointment Letters, Selangan Mosque Takmir Committee
National
Distribution of His Majesty's Personal Gift of Dates, Ministry of Primary Resources and Tourism
National
Urgent Treated Water Pump Valve Replacement Works at Bukit Barun Water Treatment Plant Stage 4 & 5
National
Enforcement of Control of the Capture, Importation of Small-sized and Egg-Bearing Lobsters and Crabs
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Congratulatory Message on occasion of Appointment as the New Prime Minister of the People's Republic of Bangladesh
National
Religious Ceremony Awaiting the Results of the Sighting of the New Moon of Ramadhan 1447 Hijrah
National
Temporary Half Lane Road Closure at Jalan Raja Isteri Pengiran Anak Saleha and Tungku Highway
National
Doa Kesyukuran Ceremony in conjunction with His Royal Highness the Crown Prince's 52nd Birthday
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Doa Kesyukuran Ceremony in conjunction with the Crown Prince's 52nd Birthday Celebration
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Prohibition of Offering Ramadhan Buffet for Premises that have not obtained Halal Certificate
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Flag Handover Ceremony to the National Contingent competing at the 6th Asian Beach Games
National
Brunei's Commitment to Fostering Peace, Promoting Social Harmony & Advancing Sustainable Development
National
Book Launching Ceremony, Ambassador Extraordinary and Plenipotentiary of the Republic of Turkiye
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Audience Ceremony with the Director-General of the Food and Agriculture Organisation of the United Nations, FAO and Delegation
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38th Session of Food and Agriculture Organisation Regional Conference Launching Ceremony
National
Signing of Agreement between Kedai Kampung & Agrodynamics Antarabangsa Brunei Sendirian Berhad
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27/04/2026 Opening of the Final of the National Musabaqah Al-Qur'an Reading for Adults 1447 Hijrah/2026
National
Mass Sunat Hajat Prayer in conjunction with the World Day for Safety and Health at Work 2026
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Final of National Level Musabaqah Al-Qur'an Reading for Adults 1447H/2026M, Final Night
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Audience Ceremony with Deputy Prime Minister and Minister of Foreign Affairs and International Cooperation of Cambodia
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Conferment of State Honorary Medals in conjunction with His Majesty's 79th Birthday Celebration
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Establishment of Tilawah Al-Qur'an Scheme for Children as Foundation for Noble Morals and Personalities
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Reading, Deepening Understanding and Expressing Internalisation of Al-Qur'an in Shaping Morals and Behavior
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Appointment & Confirmation of Deputy Permanent Secretary (Policy and Management), Ministry of Health
National
Advance Party of Brunei Darussalam Haj Management Office meeting with Syarikat Holiday Inn Bakkah
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Bilateral Meeting With His Excellency Prime Minister of the Democratic Republic of Timor-Leste
National
Flowmeter and Valve Replacement Works at the Agis-Agis Water Treatment Plant, Belait District
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Bilateral Meeting with the President and the Vice President of the People's Republic of China
In The Court
Customs Case, An Indonesian Woman possessing Cigarettes of Various Brands without a Valid Permit
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His Royal Highness left Shenzhen after concluding Official Visit to the People's Republic of China
National
Long Service Medal Presentation in conjunction with His Majesty's 79th Birthday Celebration
National
Religious Ceremony while Waiting For the Result of the Moon Sighting for Zulhijjah 1447 Hijrah
National
Ensuring every Citizen possesses Homes that are Comfortable, Safe and of Reasonably High Quality
National
Establishment of the National Committee on Addressing the Impact of the Middle East Conflict
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Special Titah in conjunction with the Reshuffle and Appointment of New Cabinet Ministers and Deputy Ministers 2026
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His Majesty consents to Appoint and Promote the Deputy Director of Anti-Corruption Bureau as Director of Anti-Corruption Bureau
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Swearing-In Ceremony for the Newly Appointed Judicial Commissioner of the Supreme Court for the Court of Appeal of Brunei Darussalam
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Message of Condolences following the recent earthquake in Southern Mindanao, Republic of the Philippines
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Courtesy Call by the Non-Resident Ambassador of the Republic of Azerbaijan to Brunei Darussalam
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Talk Programme “Meneladani Tokoh Wanita Islam Zaman Rasulullah Shallallahu 'Alaihi Wasallam"
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Congratulatory Message on the Occasion of the Republic of the Philippines' 128th Independence Day
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1448 Hijrah New Year with the National Level Reading of End of Hijrah Year and Hijrah New Year Doa
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His Majesty will attend the ASEAN-Russia Commemorative Summit in Kazan, Russian Federation
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The Pillars to the Country's Stability, Prosperity and Resilience Must Always Be At a Strong and Secure Level
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His Majesty Hope Goverment-Linked Companies Will Be Able to Contribute to a More Sustainable Economic Growth
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Strengthening Religious Education and the Field of Da'wah or Propogation is Necessary
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Gala Dinner in Honour of Heads of State and Government of ASEAN attending the ASEAN-Russia Commemorative Summit
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Congratulatory Messages on the occasion of His Majesty King Charles III's 77th Birthday Anniversary
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In Audience with the Outgoing Ambassador Extraordinary and Plenipotentiary of the United States of America to Brunei Darussalam
Sports
'Kampungku Cergas' Recreational Activity in conjunction with the National Family Day Celebration
National
'Quit2Win' Campaign becomes an Important Platform to Quit Smoking and Stop using Electronic Vape
National
BDFA Responsible for the Food Safety Services in the Tutong District and Temburong District
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Maintenance Works of Mengkubau Water Treatment Plant & Cleaning Works of Bukit Ambok Water Tank
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Doa Kesyukuran Ceremony in conjunction with His Royal Highness Prince 'Abdul Malik's 43rd Birthday
National
Giant-Sized Flag Hoisting Ceremony in conjunction with His Majesty's 80th Birthday Celebration
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Kejohanan Bola Sepak His Majesty The Sultan's Cup : Memperkukuh hubungan persahabatan NBD, UK
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Haj fare grant applications open; registration begins for National Maulidur Rasul celebration
National
Brunei Insurance & Takaful Represented in the 31st East Asia Insurance Congress (EAIC) Tokyo 2026
National
Maraburong Prison Phase 4 building handed overMaraburong Prison Phase 4 building handed over
National
Landmark Sukuk supports financial innovation and capital market development in Brunei Darussalam
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Their Majesties attend funeral for late HRH Pengiran Anak Isteri Pengiran Anak Hajah Zariah
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