meganariley/

us-air-quality-hourly

Hourly air quality readings from all US EPA monitoring stations, 2015–2024.

239M+ rows covering 6 NAAQS criteria pollutants across all US monitoring stations for 10 years.

	Fields




	

Column Description

timestamp Local date and time of measurement

pollutant Pollutant name: ozone, pm25, pm10, so2, co, no2

value Raw measurement value

unit Unit of measurement

aqi Calculated AQI (EPA standard… See the full description on the dataset page: https://huggingface.co/datasets/meganariley/us-air-quality-hourly.