Slidell, LA Pollen Count
Slidell, LA · Last updated Friday, November 6, 2026
This page shows the most recent reading available for Slidell — from Friday, November 6, 2026 (1 day ago) — not today's reading.
Pollen Overview
Today's overall pollen level and the dominant type (trees, weeds, grass, or mold).
Total Pollen Index
The combined pollen level across all types (0–100).
Slidell, LA
Weeds Index
How active weeds pollen is today (0–100).
Slidell, LA
Pollen Types
Pick a pollen subtype to update the species forecast
5-Day Slidell Overall Pollen Forecast
Bars are colored by severity (Low/Moderate/High).
Pollen count Slidell residents check each morning
The Slidell pollen count today is 18 (Low). The main driver is Ragweed, with weed pollen at 20 today. Tree pollen is the highest single category in the split at 20 (Low), ahead of weed pollen at 20 and grass pollen at 6. Plant-by-plant detail for Slidell, LA follows, along with the outlook for the days ahead. Pollen Atlas updated this count on Friday, November 6, 2026.
A Low band on the Pollen Atlas index means the Total Pollen Index has stayed in the lower part of the 0–100 scale. Readings in this band are built from low individual category values rather than from one large spike, and the category split above matters more than the headline number: a low total can still contain one category, such as tree pollen, reading noticeably higher than the rest, which is why the split is printed on every Slidell page.
Fall is ragweed season across most of the United States: ragweed plants release pollen from late summer into autumn, and weed pollen is typically the last major outdoor pollen category to fade as the weather cools. That pattern is why an autumn total is so often weed-led even when the headline number is low — tree and grass pollen have usually receded by then, leaving weed pollen, and on damp days mold, to make up most of what the index records.
To see whether today’s pollen level holds, check the 5-day Slidell pollen forecast below — it is currently holding, with Friday the highest day in the window.
This is the pollen count Slidell residents check each morning, built from the day’s tree, grass, weed and mold readings.
What is the Slidell pollen count today?
The Slidell pollen count today is 18 out of 100 (Low) on the Pollen Atlas Total Pollen Index, driven mainly by Ragweed.
Short answer for anyone searching pollen count today Slidell: this page is updated every morning with the day’s modelled reading.
Slidell allergies today
Slidell allergies today are set by the same reading as the pollen count above: the Total Pollen Index is 18 (Low), driven mainly by Ragweed. When people ask about Slidell allergies, this is the number that answers them — one daily index built from today’s tree, grass, weed and mold readings for Slidell.
Allergies in Slidell follow the Louisiana calendar set out below — the chapters, the plants behind them, and the 5-day forecast on this page show whether today is typical for the season or an exception to it. If you are checking allergies today in Slidell before heading outdoors, the split at the top of this page is the part to read: it shows which pollen is doing the work today, not just how high the total sits.
Read the five-day table on this page as the Slidell allergy forecast: today reads 18 (Low), and the day-by-day outlook shows whether Slidell allergies are set to ease or build across the week — the days to plan outdoor time around are the ones where the index steps down, not just today.
In practice, the allergy count Slidell today records is this same combined reading — tree, grass, weed and mold in one index.
The Slidell allergy count today is 18 (Low) — the same Total Pollen Index as the pollen count above, in one combined reading.
Pollen count today Slidell: the 5-day forecast
| Day | Total Pollen Index | Band |
|---|---|---|
| Friday, November 6 | 18 | Low |
| Saturday, November 7 | 17 | Low |
| Sunday, November 8 | 17 | Low |
| Monday, November 9 | 17 | Low |
| Tuesday, November 10 | 15 | Low |
Pollen Atlas forecasts Slidell’s pollen count to peak on Friday at 18 (Low) over the next 5 days.
Pollen by type in Slidell
What is driving Slidell’s pollen today
The shape of today’s 18 (Low) is set by tree pollen at 20 (Low on its own scale) — about 43% of the four category readings added together, level with weed pollen at 20. Tree readings are the fastest-moving of the four in their season, because species pollinate in sequence — a tree-led total can change character within a week. Tree pollen leading in November runs against the usual calendar — the Louisiana tree chapter runs December to May — so today’s lead is the model outranking the pattern, and this page reports the modelled reading first.
Plant-level detail is not in today’s feed for Slidell, so the drivers have to be read from the category split above. The Louisiana guide’s account of Louisiana names an early February tree start and outdoor mold, elevated much of the year in the Gulf humidity — the pollens behind readings of this shape in this state — and the split shows how much of today’s total each category is actually carrying.
Across the five-day window the Total Pollen Index runs from 15 to 18, never changing band. Today’s 18 sits 1 point above the window’s average of 16.8 — a steady window, in which one day reads much like the next.
Plants affecting Slidell now
Detailed plant-by-plant readings for Slidell were not returned in today\u2019s source data, so this section summarises the pollen types the index above is built from instead of listing individual plants.
Tree pollen is one of the categories with a non-zero reading today, at 20 (Low).
Grass pollen is one of the categories with a non-zero reading today, at 6 (Low).
Weed pollen is one of the categories with a non-zero reading today, at 20 (Low).
In the Gulf & South Texas pattern, the plants that typically shape this city’s year are spring trees, warm-season grasses, late-summer ragweed and winter mountain cedar in the west of the region — named here as regional context only, not as today\u2019s measurements.
Plant detail returns here automatically on any day the source data includes it.
Every pollen type, with photos and seasons: the pollen directory.
Slidell pollen through the year
Chapter by chapter, the Slidell pollen year runs like this:
- Mountain cedar runs from December to March in the west of the region, and oak leads the spring.
- Grasses carry the hot months, with mold close behind in the Gulf humidity.
- Ragweed runs from August toward a mild, late finish.
- Outdoor mold stays elevated for much of the year in the Gulf humidity and can co-headline a reading in any month.
The Louisiana allergy season guide names an early February tree start and outdoor mold, elevated much of the year in the Gulf humidity. Duration defines Louisiana’s season: hard frosts are infrequent, so the calendar’s true low break is the briefest in the continental interior — and the AAFA’s 2025 report ranked New Orleans No. 2 of 100 metros. The CDC identifies warm, humid environments as prime mold habitat, and Louisiana’s Gulf climate is the continental interior’s clearest example.
November in Slidell sits inside the weed chapter of the Louisiana year, in its closing weeks — the part of the calendar today’s readings should be judged against. Between them, the three chapters touch every month of the Louisiana year — there is no reliably empty month in this calendar. The full calendar is set out in the Louisiana allergy season guide.
How to read this index
Pollen Atlas reports the Slidell pollen count on a Total Pollen Index from 0 to 100, built from separate tree, grass and weed readings. The total is a summary, not an average of the three: a single strong category can lift it, and three quiet categories can hold it down even in a month when Slidell, LA pollen is usually more active. Index values are a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data, with plant detail by the Google Pollen API. The index is a modelled 0–100 scale, not a measured count, and figures update through the day, so a morning and an evening visit to this page can legitimately show different numbers.
Slidell in today’s national picture
At 18 (Low), Slidell ranks joint 56739th of the 90896 cities Pollen Atlas tracks today — in the middle of the national table. The highest reading in the country today is Serpa, Portugal at 53, and the lowest is Galiakberovo, Russia at 5. The whole table spans 48 points today — a wide-open day, when the top and bottom of the table are effectively in different seasons.
Around Slidell: Eden Isle, LA (5 miles away) reads 25 (Low); Pearl River, LA (6 miles away) reads 18 (Low); Lacombe, LA (9 miles away) reads 18 (Low). Slidell reads 7 points lower than its nearest tracked neighbour today. Across Louisiana’s 489 tracked cities, today runs from 15 in Haynesville to 31 in White Castle.
Pollen totals are population numbers; symptoms are personal. The same reading can leave one Slidell resident untouched and floor another, depending on which pollens they are sensitised to. If this pattern finds you every ragweed season, allergists in Slidell, LA can test whether tree, grass, weed or mold is the category that matters for you — the four readings at the top of this page are the starting point for that conversation.
Slidell in its local area
Slidell is a city in St. Tammany Parish, Louisiana. Its population is 28,664 (ACS 2023).
Across Louisiana’s 489 tracked cities, Slidell ranks joint 287th today.
Like every Pollen Atlas city page, the Slidell, LA pollen count is refreshed each morning.
Nearby cities
- Eden Isle pollen count (5 miles away)
- Pearl River pollen count (6 miles away)
- Lacombe pollen count (9 miles away)
- Abita Springs pollen count (19 miles away)
- Lewisburg pollen count (20 miles away)
- Mandeville pollen count (20 miles away)
From Pollen Atlas News
See how Slidell ranks in today's pollen count rankings — the worst cities for allergies today
See Slidell on the US pollen map
Pollen indexes: a modelled pollen risk index computed by Pollen Atlas from open weather, vegetation and phenology data, calibrated against CDC/NAB season data. Plant detail: Google Pollen API. Index values are modelled, not measured counts. Sources: CDC/NAB; USA-NPN; GBIF (CC BY); ESA WorldCover (CC BY 4.0).