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
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