Moderate Air Quality in LA, Some Risks for Sensitive Groups
カートのアイテムが多すぎます
ご購入は五十タイトルがカートに入っている場合のみです。
カートに追加できませんでした。
しばらく経ってから再度お試しください。
ウィッシュリストに追加できませんでした。
しばらく経ってから再度お試しください。
ほしい物リストの削除に失敗しました。
しばらく経ってから再度お試しください。
ポッドキャストのフォローに失敗しました
ポッドキャストのフォロー解除に失敗しました
Moderate Air Quality in LA, Some Risks for Sensitive Groups
-
ナレーター：
-
著者：
このコンテンツについて
Most of the air pollution in Los Angeles currently stems from fine particulate matter, known as PM2.5. These microscopic particles are produced primarily by vehicle emissions, industrial activity, and, at times, wildfires. On today’s forecast, central and western parts of Los Angeles County are experiencing moderate PM2.5 levels, while coastal and southern areas are enjoying good air quality with lower pollutant concentrations[3].
Los Angeles continues to battle persistent smog and ozone pollution, despite decades of clean-air initiatives. The city frequently ranks at or near the top of national lists for ozone pollution, with the surrounding basin’s geography naturally trapping pollutants and exacerbating the problem. Nevertheless, air quality has improved significantly over recent decades, with high-ozone days down by a third from the late 1990s, thanks to stricter regulations and technological advances. However, extreme heat and periodic wildfires continue to elevate pollution levels at times, presenting ongoing challenges[1][2].
For most residents, outdoor activities are safe today, though people with asthma or heart and lung conditions should remain alert for any symptoms if spending extended time outdoors. Checking real-time AQI updates is advisable for those especially sensitive to air pollution[5].