What do Flow's quick-view LEDs mean?

Flow's quick-view LEDs give you glanceable feedback related to your air quality exposure and battery level.

What do Flow's LEDs mean? 

GREEN
Air pollution levels are low

YELLOW
Air pollution levels are moderate

YELLOW (scrolling)
Flow is warming up (15 min)
 

RED
Air pollution levels are high

PURPLE
Air pollution levels are very high

BLUE

Flow is installing, updating or connecting via Bluetooth 

WHITE

Taking a measurement 

Battery lights

GREEN

Full battery

YELLOW
Medium battery

RED

Low battery

FLASHING RED

Empty battery