Air Quality Today — US
As of 19 Oct 2026, 21:00 EDT, 2 of 1,742 air quality monitors in the lower 48 states report unhealthy air (AQI over 150) — worst: Sandersville (Georgia Department of Natural Resources), AQI 201 (PM2.5). 1,573 are Good and 164 Moderate. Preliminary data from EPA AirNow.
Your location is used once to find nearby monitors and is not stored.
Good (0-50): 1,573 Moderate (51-100): 164 Unhealthy for Sensitive Groups (101-150): 3 Unhealthy (151-200): 1 Very Unhealthy (201-300): 1 Hazardous (301+): 0
Worst air right now 40
| Monitor | AQI | Category | Pollutant | Hour |
|---|---|---|---|---|
| Sandersville Georgia Department of Natural Resources |
201 | Very Unhealthy | PM2.5 | 19 Oct 21:00 EDT |
| Billings Montana DEQ |
164 | Unhealthy | PM2.5 | 19 Oct 21:00 EDT |
| Canton Fire St8 Ohio EPA-DAPC |
104 | Unhealthy for Sensitive Groups | PM2.5 | 19 Oct 21:00 EDT |
| Indpls-Washington Park Indiana Dept. of Environmental Management |
101 | Unhealthy for Sensitive Groups | PM2.5 | 19 Oct 21:00 EDT |
| Finland Elem Ohio EPA-DAPC |
101 | Unhealthy for Sensitive Groups | PM2.5 | 19 Oct 21:00 EDT |
| Glendora - Laurel South Coast AQMD |
97 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Spruce Pine North Carolina DEQ - Division of Air Quality |
97 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| BPG Ohio EPA-DAPC |
89 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Crestline - Lake Gregory South Coast AQMD |
87 | Moderate | Ozone | 19 Oct 21:00 EDT |
| MONTG Alabama Department of Environmental Management |
85 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| PUBLIC HEALTH Linn Co. Public Health |
84 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Lancaster-Fairgrounds Antelope Valley AQMD |
80 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Rutgers University New Jersey Dept. of Environmental Protection |
80 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Rosalia-S Josephine Ave Washington Department of Ecology |
78 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Elkhart-Prairie St. Indiana Dept. of Environmental Management |
75 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Near Road Louisville Metro Air Pollution Control District |
75 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Jerseydale (seasonal) California Air Resources Board |
74 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Muncie Central HS Indiana Dept. of Environmental Management |
74 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| McCall Idaho Department of Environmental Quality |
73 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| PARR Arkansas Department of Environmental Quality |
73 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Victorville - Park Avenue Mojave Desert AQMD |
71 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Alpine San Diego APCD |
71 | Moderate | Ozone | 19 Oct 21:00 EDT |
| St. Paul-Harding H.S. Minnesota Pollution Control Agency |
69 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Pullman-SE Dexter St Washington Department of Ecology |
68 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Smoky Row Near Road Ohio EPA-DAPC |
68 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Hesperia - Olive Street Mojave Desert AQMD |
67 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Detroit-Trinity Michigan Department of Environment, Great Lakes, and Energy |
66 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Merced-Vierra San Joaquin Valley Unified APCD |
65 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Waterloo, Water Tower Iowa DNR |
65 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Fairgrounds Ohio EPA-DAPC |
65 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Red Bluff - Walnut office Tehama County Air Pollution Control District |
64 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Madera-City San Joaquin Valley Unified APCD |
64 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Riverside - Rubidoux South Coast AQMD |
64 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Redlands - Dearborn South Coast AQMD |
64 | Moderate | Ozone | 19 Oct 21:00 EDT |
| Canton Ohio EPA-DAPC |
64 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Alton Illinois EPA |
63 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Yakima-4th Ave Washington Department of Ecology |
62 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Lafayette Louisiana Department of Environmental Quality |
62 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Indpls-W.18th St Indiana Dept. of Environmental Management |
62 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
| Lansing Michigan Department of Environment, Great Lakes, and Energy |
62 | Moderate | PM2.5 | 19 Oct 21:00 EDT |
On an unhealthy air day
- Orange (101-150): children, older adults and people with heart or lung disease should cut long or hard outdoor exertion.
- Red (151-200) and above: everyone should limit time outdoors; keep windows shut and run a HEPA filter if you have one.
- Wildfire smoke is the usual cause of the highest readings — what helps: wildfire smoke guide.
- Your state or local air agency issues the official air quality alerts; they are also in our US weather alerts.
What this page shows, and what it misses
The latest hourly AQI from each AirNow monitoring site in the lower 48 states, for fine particles (PM2.5) and ozone, refreshed every 30 minutes; where a site measures both, the higher is shown. These data are preliminary: they are not fully verified and can change. Values, categories and colours are shown exactly as AirNow reports them. Alaska, Hawaii and Puerto Rico are not covered here.
Data: U.S. EPA AirNow and the federal, state, local and tribal air quality agencies that operate the monitors (list of agencies).