Oklahoma air quality

Greer County, Oklahoma Air Quality

Greer County34.936, -99.561

The nearest reporting area, Lawton, measured an index of 61 this hour, which is Moderate. Oklahoma Department of Environmental Quality forecasts Good for Lawton today and Good tomorrow.

Measured now
61 · Moderate
Today
50 · Good
Tomorrow
50 · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Greer County, Oklahoma. Open it for the live map, where it pans and zooms.

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Greer County, Oklahoma Open the live map with the particulate forecast

Map layer from NOAA National Air Quality Forecast Capability. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

An Air Quality Alert is issued by the National Weather Service on behalf of a state or local agency when pollution is expected to reach a level that harms health. An Air Stagnation Advisory means the air will not move enough to clear what is already in it.

None are in force near Greer County right now. All Oklahoma warnings.

Now

Moderate

Reporting area
Lawton, OK, 65 miles away
Reported by
Oklahoma Department of Environmental Quality
Area index
61 · Moderate

Measured, not modeled. AirNow observations are preliminary until the operating agency certifies them, which happens months later.

Today and tomorrow

Oklahoma Department of Environmental Quality's own forecast for Lawton, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood50PM2.5
TomorrowGood50Ozone
Tuesday, September 22Good50Ozone
Wednesday, September 23Good50Ozone

The forecaster’s discussion

Written by Oklahoma Department of Environmental Quality for Lawton and filed with AirNow.

Hot southerly breezes will continue to bring northward Saharan dust. Meanwhile, a lack of rain desiccates vegetation, leaves little water to evaporate, and allows incoming solar radiation to heat the surface very effectively. Therefore, very high fire danger persists, and any fires may produce locally unhealthy smoke. Sufficient moisture aloft, steady breezes, and diurnal cumulus convection in the afternoon will limit ozone to the moderate category. Meanwhile, monsoonal moisture will bring scattered rain showers to the Panhandle through the forecast period. Early next week, a cold front will spread isolated thunderstorms to the rest of the state, and temperatures will drop significantly but stay above normal. Afterward, easterly flow with moisture, clouds, and virga aloft will impede ozone formation, but a frontal inversion and episodic sunshine enhance ozone concentrations.

Hour by hour

NOAA’s National Air Quality Forecast Capability, bias-corrected against monitors, for this town’s own coordinate. The worst hour ahead is an index of 51, Moderate, around Wed, 7:00 AM CDT, from the run issued Sun, 7:00 AM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 9:00 AM CDT23Good4.3
Sun, 10:00 AM CDT24Good4.4
Sun, 11:00 AM CDT24Good4.3
Sun, 12:00 PM CDT23Good4
Sun, 1:00 PM CDT23Good4
Sun, 2:00 PM CDT22Good3.7
Sun, 3:00 PM CDT36Good3.939.3
Sun, 4:00 PM CDT38Good3.841.5
Sun, 5:00 PM CDT40Good3.443.3
Sun, 6:00 PM CDT41Good3.444.2
Sun, 7:00 PM CDT41Good3.644.8
Sun, 8:00 PM CDT42Good3.745
Sun, 9:00 PM CDT41Good3.644.8
Sun, 10:00 PM CDT41Good3.744.4
Sun, 11:00 PM CDT41Good3.644
Mon, 12:00 AM CDT40Good3.643.6
Mon, 1:00 AM CDT40Good4.443.1
Mon, 2:00 AM CDT39Good5.542.2
Mon, 3:00 AM CDT37Good5.441
Mon, 4:00 AM CDT36Good5.939.9
Mon, 5:00 AM CDT35Good6.138.7
Mon, 6:00 AM CDT33Good636.9
Mon, 7:00 AM CDT31Good5.534.7
Mon, 8:00 AM CDT30Good5.133
Mon, 9:00 AM CDT29Good5.131.8
Mon, 10:00 AM CDT29Good5.431.3
Mon, 11:00 AM CDT31Good5.731.1
Mon, 12:00 PM CDT32Good6.431
Mon, 1:00 PM CDT33Good6.832
Mon, 2:00 PM CDT34Good6.634
Mon, 3:00 PM CDT35Good6.836.6
Mon, 4:00 PM CDT36Good6.738.8
Mon, 5:00 PM CDT37Good6.740.5
Mon, 6:00 PM CDT39Good6.542
Mon, 7:00 PM CDT40Good6.743.7
Mon, 8:00 PM CDT42Good6.645.1
Mon, 9:00 PM CDT42Good6.245.6
Mon, 10:00 PM CDT42Good6.645.5
Mon, 11:00 PM CDT42Good7.345
Tue, 12:00 AM CDT41Good7.944.2
Tue, 1:00 AM CDT41Good8.543.4
Tue, 2:00 AM CDT44Good942.3
Tue, 3:00 AM CDT46Good8.940.7
Tue, 4:00 AM CDT47Good8.739
Tue, 5:00 AM CDT46Good7.937.1
Tue, 6:00 AM CDT45Good7.835.1
Tue, 7:00 AM CDT46Good8.632.9
Tue, 8:00 AM CDT46Good8.230.6
Tue, 9:00 AM CDT45Good7.928.7
Tue, 10:00 AM CDT46Good8.427.8
Tue, 11:00 AM CDT46Good8.127.7
Tue, 12:00 PM CDT46Good8.128.7
Tue, 1:00 PM CDT45Good7.930.6
Tue, 2:00 PM CDT44Good7.633.1
Tue, 3:00 PM CDT44Good7.936.3
Tue, 4:00 PM CDT44Good8.540.2
Tue, 5:00 PM CDT45Good8.344
Tue, 6:00 PM CDT45Good8.547.3
Tue, 7:00 PM CDT46Good8.650.2
Tue, 8:00 PM CDT48Good8.352.3
Tue, 9:00 PM CDT49Good7.653.4
Tue, 10:00 PM CDT49Good7.453.7
Tue, 11:00 PM CDT49Good7.253.1
Wed, 12:00 AM CDT48Good7.752
Wed, 1:00 AM CDT46Good8.650.8
Wed, 2:00 AM CDT46Good9.349.2
Wed, 3:00 AM CDT48Good9.546.7
Wed, 4:00 AM CDT48Good9.244
Wed, 5:00 AM CDT49Good9.141.5
Wed, 6:00 AM CDT49Good9.138.9
Wed, 7:00 AM CDT51Moderate10.136.2

Fine particles in micrograms per cubic meter, ozone in parts per billion as an 8-hour average. The index for each hour is EPA’s: the ozone figure is already the 8-hour average the ozone index is defined on, and the particle figure is run through EPA’s NowCast, which is how an hourly PM2.5 concentration becomes an index.

Smoke

NOAA’s analysts have not drawn smoke over Greer County in satellite imagery today.

NOAA’s model forecasts near-surface smoke peaking at 0.5 µg/m³ around Mon, 11:00 AM CDT.

Smoke on the radar over Greer County

What this means

Moderate

Air quality is acceptable. There may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Who is affected
People who are unusually sensitive to ozone or fine particles.
What to do
If you are unusually sensitive, consider making long or intense outdoor activity shorter or easier.
Index range
51 to 100

Category descriptions are the Environmental Protection Agency’s own.

What these numbers are. An index beside a monitor’s name is a measurement, published hourly by AirNow and preliminary until the operating agency certifies it. A category for today or tomorrow is a state or local agency forecaster’s own forecast for a reporting area. An hourly index is NOAA’s air quality model on a five-kilometer grid, not a reading from any instrument. Where a town has no monitor within reach, only the model figures appear, and the page says so.

Nearby

The nearest towns with a page of their own, closest first.

Weather forecast for Greer CountyWarnings in Greer CountyLive radar over Greer CountyOklahoma air quality

Sources

Observations and daily forecasts from AirNow, the US Environmental Protection Agency’s program with NOAA, the National Park Service, NASA, tribal, state and local agencies. Hourly forecasts from NOAA’s National Air Quality Forecast Capability. Smoke analysis from NOAA’s Hazard Mapping System. Alerts from the National Weather Service. Index categories and breakpoints are EPA’s, as revised in 2024.