Indeks Kualiti Udara (AQI) di Amerika Syarikat ๐บ๐ธ
Indeks Kualiti Udara (AQI) dan Tahap PM2.5 Langsung di Amerika Syarikat
Pada masa ini, Indeks Kualiti Udara (AQI) di Washington, ibu negara Amerika Syarikat, diukur pada skor 56. Menurut standard kesihatan US EPA, penarafan kualiti udara ini dikategorikan sebagai Good. Atmosfera semasa di Washington dipengaruhi oleh kepekatan PM2.5 (zarah halus) sebanyak 11.6 ยตg/mยณ dan tahap PM10 yang direkodkan pada 13.1 ยตg/mยณ. Pemantauan bahan pencemar gas menunjukkan Nitrogen Dioksida (NO2) pada 5.0 ยตg/mยณ.
Di luar pusat bandar utama, keadaan atmosfera dan tahap jerebu berubah-ubah di seluruh Amerika Syarikat berdasarkan output industri, kepadatan trafik, dan corak cuaca tempatan. Data pencemaran masa nyata dan amaran kesihatan pernafasan juga sedang dipantau secara aktif di bandar seperti New York City, Los Angeles, Brooklyn, Chicago dan Houston. Menjejaki metrik kualiti udara ini adalah penting untuk penduduk di seluruh negara bagi menguruskan pendedahan luar dan mengekalkan keselamatan pernafasan semasa tempoh kepekatan zarah yang meningkat.
Kualiti Udara Amerika Syarikat: Indeks Bandar Utama
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Pemantau Pencemaran & Ramalan AQI: Wilayah Amerika Syarikat
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* Data Indeks Kualiti Udara (AQI) untuk Amerika Syarikat dikira menggunakan piawaian EPA AS. Maklumat diproses daripada beberapa stesen pemantauan yang mengesan PM2.5, PM10, dan bahan pencemar gas untuk memastikan ketepatan bagi perancangan kesihatan pernafasan.
Memahami Tahap Kualiti Udara
Air is fresh and healthy. Safe for all outdoor activities.
Acceptable air quality, though sensitive groups should monitor comfort.
Vulnerable groups (children, elderly) should limit outdoor exertion.
Everyone begins to experience health effects. Stay indoors where possible.
Significant health impact for entire population. Emergency conditions.
Serious health alert: everyone may experience serious life-threatening effects.
Fine particles are at minimal, safe levels. Air is optimal.
Acceptable air, but haze may be present in urban areas.
Individuals with heart or lung disease should limit activity.
Particulate levels high enough to cause respiratory irritation.
Heavy haze. High risk to cardiovascular health for the public.
Lethal particulate concentrations. Critical neurological and lung risk.
Low levels of dust and coarse particles. Environment is safe.
Coarse particles may trigger coughing in sensitive groups.
Visible dust pollution. Sensitive groups should avoid heavy labor.
Widespread respiratory impacts likely for the population.
Dangerous dust and debris levels. Significant warnings issued.
Extremely high concentrations. Stay inside with filtration.
Surface ozone levels are within a safe, natural range.
Acceptable air, but sensitive individuals may feel chest tightness.
Rising ozone can trigger airway inflammation in active children.
Avoid heavy outdoor work during the hottest part of the day.
Serious lung function reduction likely across the public.
Emergency ozone levels. Risk of permanent lung tissue damage.
Nitrogen levels are optimal. Safe for everyone.
Typical background levels for high-density urban areas.
Increased risk of respiratory infections for vulnerable groups.
Significant airway inflammation likely near traffic zones.
Acute respiratory distress potential. High-risk groups stay indoors.
Toxic concentrations. Immediate health precautions required.
Carbon Monoxide levels are clean and non-toxic.
Acceptable; may affect those with specific heart conditions.
Reduced oxygen delivery to the heart may occur.
Headaches and fatigue may occur in urban canyons.
Significant cardiovascular distress. Mental confusion possible.
Lethal potential. Immediate risk of neurological collapse.
Optimal air quality with no sulfur detection.
Acceptable air; minor odors possible near industry.
Bronchoconstriction possible for active asthmatics.
Respiratory distress likely for the wider population.
Significant wheezing and shortness of breath likely.
Extreme respiratory danger. Significant life risk.
Kualiti Udara di Amerika Syarikat โ Soal Jawab
Soalan lazim tentang tahap AQI, bahan pencemar, dan sumber data untuk Amerika Syarikat.