United States
2,673 monitoring stations · readings from 9 to 119
Average AQI
Air quality in United States
Air quality in United States is currently 51 on the AQI scale, which falls in the Moderate band. That number is the average across every monitoring station reporting in United States right now.
We aggregate 2,673 stations across United States. Individual stations range from 9 at the cleanest to 119 at the worst, so conditions vary across United States — the local figure matters more than the average.
United States breaks down into 54 regions you can open individually. Of those listed below, Gaum is reading highest at 93 and Puerto Rico lowest at 35.
Readings refresh hourly from the official monitoring networks we track. Conditions can change quickly, so check back before planning time outdoors.
What to do at moderate levels
Outdoor activity
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner.
Sensitive groups
Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
Indoor air
Ventilating is still worthwhile. Consider closing up during traffic peaks if you live on a busy road.
Regions in United States
54 regions
Gaum
Moderate
- Stations
- 1
- Range
- 93–93
89Alaska
Moderate
- Stations
- 16
- Range
- 65–95
71South Carolina
Moderate
- Stations
- 29
- Range
- 38–86
68Tennessee
Moderate
- Stations
- 44
- Range
- 42–88
66Iowa
Moderate
- Stations
- 24
- Range
- 42–80
62Hawaii
Moderate
- Stations
- 30
- Range
- 50–65
60Florida
Moderate
- Stations
- 116
- Range
- 38–82
60Ohio
Moderate
- Stations
- 69
- Range
- 42–75
59Michigan
Moderate
- Stations
- 49
- Range
- 52–71
58Georgia
Moderate
- Stations
- 40
- Range
- 38–119
58Louisiana
Moderate
- Stations
- 38
- Range
- 38–69
58Pennsylvania
Moderate
- Stations
- 101
- Range
- 42–88
56Illinois
Moderate
- Stations
- 64
- Range
- 42–76
55New Jersey
Moderate
- Stations
- 39
- Range
- 30–63
55Washington
Moderate
- Stations
- 139
- Range
- 33–65
Delaware
Moderate
- Stations
- 6
- Range
- 52–54
54Indiana
Moderate
- Stations
- 76
- Range
- 46–82
54Missouri
Moderate
- Stations
- 39
- Range
- 42–72
54North Carolina
Moderate
- Stations
- 54
- Range
- 9–95
53Maryland
Moderate
- Stations
- 33
- Range
- 42–82
53Oregon
Moderate
- Stations
- 127
- Range
- 21–69
West Virginia
Moderate
- Stations
- 3
- Range
- 50–56
52District of Columbia
Moderate
- Stations
- 6
- Range
- 52–52
52North Dakota
Moderate
- Stations
- 17
- Range
- 30–59
52Wisconsin
Moderate
- Stations
- 39
- Range
- 25–71
51Virginia
Moderate
- Stations
- 46
- Range
- 42–73
50Arkansas
Good
- Stations
- 12
- Range
- 42–56
50Kansas
Good
- Stations
- 17
- Range
- 42–60
50Kentucky
Good
- Stations
- 44
- Range
- 33–73
50Nebraska
Good
- Stations
- 13
- Range
- 38–58
50New Mexico
Good
- Stations
- 45
- Range
- 17–67
49Mississippi
Good
- Stations
- 18
- Range
- 38–60
49New York
Good
- Stations
- 69
- Range
- 29–60
49Texas
Good
- Stations
- 142
- Range
- 29–60
48Maine
Good
- Stations
- 28
- Range
- 46–52
48Oklahoma
Good
- Stations
- 31
- Range
- 42–52
48South Dakota
Good
- Stations
- 17
- Range
- 29–64
47Colorado
Good
- Stations
- 73
- Range
- 25–74
47Connecticut
Good
- Stations
- 18
- Range
- 46–54
47Massachusetts
Good
- Stations
- 38
- Range
- 42–52
About United States
Coordinates
38.488, -99.166
Centroid of monitored stations
Stations
2,673
Reporting in this area
Spread
9 – 119
Cleanest to worst station reading
Other countries nearby
United States air quality, answered
United States is currently reading an AQI of 51, which is Moderate. It is the average across 2,673 reporting stations.
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner. Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
51 sits in the Moderate band of the air quality index. The index runs from 0 to 500, and the lower the number the cleaner the air.
We currently aggregate 2,673 stations in United States, reading between 9 and 119.
Of the regions currently listed for United States, Gaum is reading highest at 93 (Moderate).
Hourly. We pull from the official monitoring networks that publish for this country, and this page refreshes on the same cadence.
See United States on the map.
Every station around it, live — or find out what today's reading means for you personally.