Air quality index70Moderate

Acceptable for most people; unusually sensitive people should take it easier outdoors.

Next 24 hours

US AQI

75Now
70
65
6112 AM
59
57
553 AM
56
56
576 AM
60
62
659 AM
74
83
9212 PM
96
100
1043 PM
103
103
1026 PM
100
98

Air quality outlook

Worst hour each day

Today84Moderate
Thu 8104Unhealthy for sensitive groups
Fri 9108Unhealthy for sensitive groups
Sat 1094Moderate
Sun 1157Moderate

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About Chattanooga weather

Chattanooga is in Hamilton County, Tennessee, United States at 35.05°, -85.31°. Right now it’s 68° and clear; today’s high is 82° with a 0% chance of rain.

Tennessee has a humid subtropical climate with mild winters and hot, humid summers. The state stretches over 400 miles from the Appalachian Mountains in the east to the Mississippi River floodplain in the west, creating notable climate differences across its length. Nashville receives about 47 inches of rain annually, with spring being the wettest season and fall the driest.