Zachary, Louisiana Air Quality
The nearest monitor to Zachary, at Pride, 7 miles away, measured an index of 11 at Mon, 11:00 PM CDT, which is Good for ground-level ozone. Louisiana Department of Environmental Quality forecasts Moderate for Baton Rouge Area today and Moderate tomorrow. NOAA’s analysts drew medium wildfire smoke over the town today.
- Measured now
- 11 · Good
- Today
- 61 · Moderate
- Tomorrow
- 64 · Moderate
- Pollutant
- Ozone
Fine particles on the map
Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Zachary, Louisiana. Open it for the live map, where it pans and zooms.
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 Zachary right now. All Louisiana warnings.
Now
Good
- Nearest monitor
- Pride, 7 miles away (site 220330013)
- Index measured
- 11 · Good
- Measured at
- Mon, 11:00 PM CDT
- Ozone
- 9 ppb
- Reporting area
- Baton Rouge Area, LA, 14 miles away
- Reported by
- Louisiana Department of Environmental Quality
- Area index
- 46 · Good
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 Baton Rouge Area, written by a forecaster rather than read off a model.
| Day | Category | Index | Pollutant |
|---|---|---|---|
| Monday, September 21 | Moderate | 77 | Ozone |
| Today | Moderate | 61 | Ozone |
| Tomorrow | Moderate | 64 | Ozone |
The forecaster’s discussion
Written by Louisiana Department of Environmental Quality for Baton Rouge Area and filed with AirNow.
Monday, light and variable winds will limit dispersion of pollutants and regional thin smoke. In addition, partly sunny and warm conditions will support ozone formation. Therefore, despite afternoon scattered thunderstorms aiding mixing, AQI levels will be low- to mid-Moderate in most locations. Tuesday, afternoon scattered thunderstorms will aid atmospheric mixing. However, periods of sunshine and warm temperatures will continue to promote ozone formation. Additionally, light easterly to northeasterly winds will allow thin smoke to linger over the region. These conditions will yield high-Good to low-Moderate AQI levels in most cities. Wednesday, as a weak front departs to the south, northeasterly winds will transport regional smoke into the state. Furthermore, increasing sunshine and temperatures in the low- to mid-90s will be conducive for ozone development. Thus, AQI levels will be low- to mid-Moderate in most cities.
Hour by hour
NOAA’s air quality model could not be read for this point just now. It runs twice a day and covers the lower 48, Alaska and Hawaii.
Smoke
NOAA’s Hazard Mapping System analysts drew medium smoke over Zachary in satellite imagery today (Mon, 7:00 AM CDT to Mon, 10:00 AM CDT). That is smoke seen from above; it is not always smoke at ground level.
NOAA’s model forecasts no measurable smoke near the ground here over the next two days.
What this means
Good
Air quality is satisfactory, and air pollution poses little or no risk.
- Who is affected
- Nobody is expected to be affected.
- What to do
- It is a good day to be outside.
- Index range
- 0 to 50
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 ZacharyWarnings in East Baton Rouge ParishLive radar over ZacharyLouisiana 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.