Air quality
Good
Moderate
Sensitive groups
Unhealthy
Very unhealthy
Hazardous
EPA AirNow scale
Satellite heat
Under 6 hrs
6–12 hrs
12–24 hrs
NASA VIIRS · bigger dot = more intense
Fire weather
Elevated
Critical
Extreme
NOAA SPC — today's outlook
Wind
Light (under 15 mph)
Moderate (15–30 mph)
Strong (30+ mph)
Arrows point the way the wind blows · NOAA HRRR, hourly