US EPA PM2.5 AQI

Both channels over the capture

Channel A Channel B shaded = AQI category · hover for values

Live now

7-day avg
Loading live reading…

Do the channels agree?

each dot = one 15-min average
15-min readingA = B line

Daily rhythm

average by hour of day
Channel AChannel B

Where the readings fall

count of 2-min readings by AQI bin
Channel AChannel B

Six-year history

yearly average AQI
Channel AChannel B