A beautiful Day 4 of Tet in Saigon today. Clear blue skies. PM 2.5 is at 68 AQI. Not bad. Below is a panoramic view of District 7 from my apartment in District 4. Phu My Bridge When you can see the Phu My Bridge, then you know the air is clean. It is roughly 5 km from where I live. … [Read more...] about Beautiful Tet Day 4 in Saigon