This morning Saigon suffered yet another bad air morning with the AQI (air quality indicator) at 162 (50 AQI and below is healthy). With cooler weather, the air pollution in Saigon tends to get worse in the morning due to temperature inversions. What is Temperature Inversion? Temperature inversion is when the surface air temperature is cooler then the air above it (air is … [Read more...] about Temperature Inversion Pollution in Saigon
air pollution
Accuracy of AirVisual Air Quality Reading for Saigon
Yesterday several people reported that they felt the AQI reading for Saigon was not accurate. They felt it was too low. Check the reading below : In fact, this was a reading from another AirVisual Node in Thu Duc at Riviera Villa. AirVisual will switch to the Riviera Villa reading when the US Consulate's air quality monitor is down. It was down from Saturday until … [Read more...] about Accuracy of AirVisual Air Quality Reading for Saigon
Good air vs bad air days in Saigon
Saigon is experiencing more bad air days with PM 2.5 levels above 150 AQI. Below is a photo from my apartment to Phu My Hung. Notice that the Phu My Hung Bridge on the top photo. Below it disappears. It is only 5 km away. … [Read more...] about Good air vs bad air days in Saigon
Air Quality in Long An, Vietnam
Nearly 11 months ago I took my first air quality reading in Long An about 30 km south of Ho Chi Minh City, Vietnam. I was surprised that I got an AQI reading of 41 (about 10 micrograms which is the safe level for clean air based on WHO standards). Currently at the same location I got the following reading: This is 58 micrograms or roughly 152 AQI which is unhealthy. … [Read more...] about Air Quality in Long An, Vietnam
Saigon air better than Shanghai now
Well, with winter coming to Shanghai soon, I was warned that the pollution of the air will get worse. Though I am not in Shanghai now, the air is quite bad. I will probably need to wear my mask there when I return Sunday. I brought some 3M PM2.5 masks for a friend. I will bring more and some air purifiers next month to Saigon. Hanoi's air is terrible. … [Read more...] about Saigon air better than Shanghai now