Louisiana air quality

Jonesville, Louisiana Air Quality

Catahoula Parish31.627, -91.818

No monitor near Jonesville has published a reading for this hour. Louisiana Department of Environmental Quality forecasts Moderate for Alexandria today and Moderate tomorrow. NOAA’s analysts drew medium wildfire smoke over the town today.

Measured now
No reading
Today
55 · Moderate
Tomorrow
64 · Moderate
Pollutant
PM2.5

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Jonesville, Louisiana 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 Jonesville right now. All Louisiana warnings.

Now

Reporting area
Alexandria, LA, 43 miles away
Reported by
Louisiana Department of Environmental Quality

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

Today and tomorrow

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

DayCategoryIndexPollutant
TodayModerate55PM2.5
TomorrowModerate64Ozone
Wednesday, September 30Good50PM2.5

The forecaster’s discussion

Written by Louisiana Department of Environmental Quality for Alexandria and filed with AirNow.

Monday, calm to light northeasterly winds will limit pollutant dispersion in Louisiana. Furthermore, mostly sunny skies, temperatures around 90-95F, and lingering thin smoke will promote ozone formation. Thus, AQI levels will be low- to mid-Moderate in most cities, with high-Moderate AQI levels expected in Baton Rouge. Tuesday, upper-level high pressure will reduce vertical mixing in the atmosphere. In addition, mostly sunny skies and temperatures around 90-95F will enhance ozone development, while light east-southeasterly winds will limit dispersion. Therefore, AQI levels will be low- to mid-Moderate over most of the state, with high-Moderate AQI levels expected to continue in Baton Rouge. Wednesday, southeasterly winds will strengthen slightly as a low pressure system develops over the central Plains, increasing pollutant dispersion in the Bayou State. Additionally, isolated afternoon thunderstorms will limit ozone formation. However, mostly sunny and warm conditions will lead to high-Good to low-Moderate AQI levels for ozone.

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 58, Moderate, around Wed, 1:00 AM CDT, from the run issued Mon, 7:00 AM CDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Mon, 9:00 PM CDT40Good6.143.1
Mon, 10:00 PM CDT37Good6.141
Mon, 11:00 PM CDT35Good6.338.5
Tue, 12:00 AM CDT34Good6.835.5
Tue, 1:00 AM CDT34Good6.732.1
Tue, 2:00 AM CDT37Good7.528.1
Tue, 3:00 AM CDT42Good924.5
Tue, 4:00 AM CDT47Good9.521.9
Tue, 5:00 AM CDT49Good9.520.1
Tue, 6:00 AM CDT51Moderate9.418.8
Tue, 7:00 AM CDT51Moderate9.317.9
Tue, 8:00 AM CDT51Moderate9.317.7
Tue, 9:00 AM CDT51Moderate9.418.8
Tue, 10:00 AM CDT52Moderate9.821.4
Tue, 11:00 AM CDT52Moderate10.225
Tue, 12:00 PM CDT52Moderate10.128.9
Tue, 1:00 PM CDT52Moderate9.832.8
Tue, 2:00 PM CDT52Moderate9.436.7
Tue, 3:00 PM CDT52Moderate9.340.5
Tue, 4:00 PM CDT52Moderate9.244.2
Tue, 5:00 PM CDT52Moderate9.247
Tue, 6:00 PM CDT52Moderate8.948.4
Tue, 7:00 PM CDT51Moderate8.248.7
Tue, 8:00 PM CDT50Good8.647.7
Tue, 9:00 PM CDT50Good9.546.1
Tue, 10:00 PM CDT51Moderate10.444.5
Tue, 11:00 PM CDT53Moderate11.743
Wed, 12:00 AM CDT56Moderate1441.6
Wed, 1:00 AM CDT58Moderate14.239.8
Wed, 2:00 AM CDT58Moderate13.337.4
Wed, 3:00 AM CDT58Moderate13.235
Wed, 4:00 AM CDT58Moderate13.133.4
Wed, 5:00 AM CDT58Moderate12.932
Wed, 6:00 AM CDT58Moderate12.830.3
Wed, 7:00 AM CDT58Moderate12.228.5
Wed, 8:00 AM CDT57Moderate11.826.4
Wed, 9:00 AM CDT57Moderate11.225.6
Wed, 10:00 AM CDT55Moderate9.226.4
Wed, 11:00 AM CDT51Moderate7.527.7
Wed, 12:00 PM CDT44Good6.929.6
Wed, 1:00 PM CDT40Good6.632
Wed, 2:00 PM CDT39Good6.835.1
Wed, 3:00 PM CDT38Good6.938.6
Wed, 4:00 PM CDT39Good742.3
Wed, 5:00 PM CDT42Good6.745.3
Wed, 6:00 PM CDT44Good6.447.6
Wed, 7:00 PM CDT45Good5.549.3
Wed, 8:00 PM CDT45Good4.249.6
Wed, 9:00 PM CDT45Good4.149.2
Wed, 10:00 PM CDT44Good3.348.2
Wed, 11:00 PM CDT42Good2.346
Thu, 12:00 AM CDT40Good2.343
Thu, 1:00 AM CDT36Good2.239.7
Thu, 2:00 AM CDT32Good2.335.9
Thu, 3:00 AM CDT29Good2.731.9
Thu, 4:00 AM CDT26Good2.728.9
Thu, 5:00 AM CDT24Good2.726
Thu, 6:00 AM CDT21Good2.823.2
Thu, 7:00 AM CDT19Good2.221

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 Hazard Mapping System analysts drew medium smoke over Jonesville in satellite imagery today (Mon, 3:10 PM CDT to Mon, 6:30 PM CDT). That is smoke seen from above; it is not always smoke at ground level.

NOAA’s model forecasts near-surface smoke peaking at 1 µg/m³ around Tue, 11:00 AM CDT.

Smoke on the radar over Jonesville

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 JonesvilleWarnings in Catahoula ParishLive radar over JonesvilleLouisiana 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.