US state respiratory-illness pressure, weekly (CDC wastewater)

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Weekly US state respiratory-illness pressure from CDC NWSS wastewater surveillance (keyless Socrata: SARS-CoV-2, Influenza A, RSV; public domain): site samples aggregated to population-weighted state-week PMMoV-normalized concentrations, each scored as a percentile of the state's own trailing-52-week history with minimal/low/moderate/high/very-high bands, 4-week log-momentum and 2-vs-2-week acceleration, and a documented 0-100 composite respiratory-pressure index (50/30/20 covid/flu/RSV weights) with surge-watch/elevated/calm flags. Who joins this: an online shop joins (state_abbr, week_start) to staffing plans to anticipate sick-leave surges; a subscription business to support-load forecasts; a sales team to travel timing. Caveats: wastewater reflects community shedding, not clinical cases; site coverage varies by state/week; CDC backfills revise recent weeks. CDC NWSS data are U.S. public domain (commercial reuse allowed).

Source: U.S. Centers for Disease Control and Prevention, National Wastewater Surveillance System
Rows: 2,624
Columns: 30
Source cadence: Weekly
Last refreshed: Sep 30, 2026
Theme: health

Column	Type	Description
week_start	string	Week start (Monday, ISO date). Samples are bucketed to the Monday of their collection week.
state_abbr	string	USPS state/territory abbreviation (uppercase). Primary join key with week_start.
state_name	string	Canonical state/territory name.
country_code	string	ISO alpha-3 country code; always 'USA'.
sites_reporting	integer	Number of distinct wastewater sites contributing samples to this state-week (all pathogens).
population_covered	float	Sum of site served-populations contributing to this state-week (people).
pathogens_reporting	integer	How many of the 3 pathogens (SARS-CoV-2, Influenza A, RSV) reported this state-week; the composite renormalizes its weights over these.
covid_conc	float	Population-weighted mean of site-week median PMMoV-normalized SARS-CoV-2 concentrations (copies/L per PMMoV unit).
covid_level_pct	float	Percentile (0-100) of covid_conc within the state's own trailing-52-week history.
covid_band	string	Activity band from covid_level_pct: minimal (<25), low (25-50), moderate (50-75), high (75-90), very_high (>=90). Relative to state history.
covid_momentum_4w	float	log10(conc_t / conc_{t-4}); ~0.3 means roughly doubling over 4 weeks. Null when either endpoint is missing/non-positive.
covid_accel_2v2	float	Recent 2-week log-change minus prior 2-week log-change; positive = accelerating.
flua_conc	float	Population-weighted mean of site-week median PMMoV-normalized Influenza A concentrations.
flua_level_pct	float	Percentile (0-100) of flua_conc within the state's own trailing-52-week history.
flua_band	string	Activity band from flua_level_pct (same cuts as covid_band).
flua_momentum_4w	float	log10(conc_t / conc_{t-4}) for Influenza A.
flua_accel_2v2	float	2-vs-2-week log acceleration for Influenza A.
rsv_conc	float	Population-weighted mean of site-week median PMMoV-normalized RSV concentrations.
rsv_level_pct	float	Percentile (0-100) of rsv_conc within the state's own trailing-52-week history.
rsv_band	string	Activity band from rsv_level_pct (same cuts as covid_band).
rsv_momentum_4w	float	log10(conc_t / conc_{t-4}) for RSV.
rsv_accel_2v2	float	2-vs-2-week log acceleration for RSV.
respiratory_pressure_index	float	Documented 0-100 composite: 100 * weighted mean of reporting pathogens' level_pct (weights 0.50 covid / 0.30 flu / 0.20 RSV, renormalized when a pathogen is absent).
pressure_band	string	Composite band from the same percentile cuts applied to respiratory_pressure_index.
composite_momentum_4w	float	Weight-renormalized mean of reporting pathogens' momentum_4w (log10 units).
surge_watch	boolean	True when pressure >= 70 and composite momentum > 0.3 (sharp, elevated wave).
elevated	boolean	True when respiratory_pressure_index >= 70.
calm	boolean	True when respiratory_pressure_index <= 30.
preliminary	boolean	True for the trailing ~2 weekly buckets: NWSS samples land with a reporting lag, so the most recent weeks are systematically thin (median 2-3 contributing sites vs ~6 earlier) and revise as late samples arrive. Treat preliminary weeks as provisional.
row_hash	string	Deterministic sha256 hash of 'NWSS-RSP\|<state_abbr>\|<week_start>' (first 16 hex).

First 10 sample rows — a preview, not the complete dataset.

week_start	state_abbr	state_name	country_code	sites_reporting	population_covered	pathogens_reporting	covid_level_pct	covid_band	covid_momentum_4w	covid_accel_2v2	flua_level_pct	flua_band	flua_momentum_4w	flua_accel_2v2	rsv_level_pct	rsv_band	rsv_momentum_4w	rsv_accel_2v2	respiratory_pressure_index	pressure_band	composite_momentum_4w	surge_watch	elevated	calm	preliminary	row_hash
2025-09-22	AK	Alaska	USA	5	369,000	3	76.923	high	—	—	13.462	minimal	—	—	15.385	minimal	—	—	45.6	low	—	false	false	false	false	38124690b58620b5
2025-09-22	AL	Alabama	USA	6	697,000	3	24.528	minimal	—	—	5.66	minimal	—	—	7.547	minimal	—	—	15.5	minimal	—	false	false	true	false	17405bc1a4e1bd4e
2025-09-22	AR	Arkansas	USA	6	145,840	3	73.585	moderate	—	—	56.604	moderate	—	—	41.509	low	—	—	62.1	moderate	—	false	false	false	false	60bc2a5685a3dfce
2025-09-22	AZ	Arizona	USA	26	4,135,436	3	88.462	high	—	—	25	low	—	—	59.615	moderate	—	—	63.7	moderate	—	false	false	false	false	4e9fa53ae4dd49ac
2025-09-22	CA	California	USA	84	24,273,598	3	92.453	very_high	—	—	30.189	low	—	—	22.642	minimal	—	—	59.8	moderate	—	false	false	false	false	bdfbcf3897205ed4
2025-09-22	CO	Colorado	USA	2	60,000	3	83.019	high	—	—	23.585	minimal	—	—	26.415	low	—	—	53.9	moderate	—	false	false	false	false	e807fa37fdecc800
2025-09-22	CT	Connecticut	USA	5	352,060	3	88.679	high	—	—	47.17	low	—	—	32.075	low	—	—	64.9	moderate	—	false	false	false	false	f98bdf12f3f0792c
2025-09-22	DC	District of Columbia	USA	1	1,600,000	3	24.51	minimal	—	—	54.902	moderate	—	—	50	moderate	—	—	38.7	low	—	false	false	false	false	1aa9dab1e0728be1
2025-09-22	DE	Delaware	USA	1	13,172	3	33.962	low	—	—	31.132	low	—	—	31.132	low	—	—	32.5	low	—	false	false	false	false	b45197f7b93f8c6b
2025-09-22	FL	Florida	USA	14	3,563,830	3	90.566	very_high	—	—	33.962	low	—	—	43.396	low	—	—	64.2	moderate	—	false	false	false	false	af57fa3f53d4647f

Profiled Oct 1, 2026 from snapshot 20260930T174442Z-69be5765342f

Measured

Completeness: 95.5%
Rows: 2,624
Columns: 30
Columns with gaps: 13

Column	Missing	Distinct	Range	Distribution
week_startvarchar	0%	49	—	2025-09-2250 2025-09-2950 2025-10-0650
state_abbrvarchar	0%	53	—	AL53 AR53 CA53
state_namevarchar	0%	60	—	Alabama53 Arkansas53 California53
country_codevarchar	0%	1	—	USA2,624
sites_reportingbigint	0%	78	1 → 145median 6	27 outside 1st–99th percentile
population_covereddouble	0%	514	6,149 → 24,923,598median 601,024	27 outside 1st–99th percentile
pathogens_reportingbigint	0%	2	1 → 3median 3
covid_concdouble	0%	2,683	0 → 1,542median 0.0001	27 outside 1st–99th percentile
covid_level_pctdouble	0%	298	1.89 → 100median 50.94
covid_bandvarchar	0%	4	—	moderate651 low644 minimal634
covid_momentum_4wdouble	9.4%	2,296	-7.37 → 6.88median -0.0086	48 outside 1st–99th percentile
covid_accel_2v2double	9.8%	2,630	-14.8 → 11.58median 0.0005	48 outside 1st–99th percentile
flua_concdouble	2%	1,575	0 → 786.71median 0	26 outside 1st–99th percentile
flua_level_pctdouble	2%	210	1.89 → 100median 50.94	27 outside 1st–99th percentile
flua_bandvarchar	2%	4	—	minimal677 moderate631 low579
flua_momentum_4wdouble	22.8%	2,048	-6.97 → 7.23median -0.0081	42 outside 1st–99th percentile
flua_accel_2v2double	24.6%	2,217	-12.84 → 12.38median 0	40 outside 1st–99th percentile
rsv_concdouble	2%	2,122	0 → 532.36median 0	26 outside 1st–99th percentile
rsv_level_pctdouble	2%	236	1.89 → 100median 50	26 outside 1st–99th percentile
rsv_bandvarchar	2%	4	—	low678 moderate632 minimal580
rsv_momentum_4wdouble	23.1%	1,690	-6.32 → 7.11median 0	42 outside 1st–99th percentile
rsv_accel_2v2double	24.5%	2,191	-12.84 → 11.73median 0	40 outside 1st–99th percentile
respiratory_pressure_indexdouble	0%	796	1.9 → 100median 50.6	49 outside 1st–99th percentile
pressure_bandvarchar	0%	4	—	low837 moderate803 minimal457
composite_momentum_4wdouble	8.9%	2,084	-7.23 → 6.89median -0.0161	48 outside 1st–99th percentile
surge_watchboolean	0%	2	—	false2,374 true250
elevatedboolean	0%	2	—	false1,947 true677
calmboolean	0%	2	—	false2,007 true617
preliminaryboolean	0%	2	—	false2,542 true82
row_hashvarchar	0%	2,189	—	000245b58b00eb4d1 000f42480656ed6c1 003ee74a3489f6001

Point any LLM at the metadata endpoint — the documentation above is machine-readable too (JSON-LD + Croissant).

cURL

curl "https://datazimuts.com/v1/datasets/cdc_nwss_respiratory_pressure/us_state_respiratory_pressure_weekly" | jq '{title, rows, columns_count, license}'

Python

import requests

ds = requests.get("https://datazimuts.com/v1/datasets/cdc_nwss_respiratory_pressure/us_state_respiratory_pressure_weekly").json()
print(ds["title"], ds["rows"], "rows")

# Sample rows for an LLM context window
for row in ds.get("sample_rows", [])[:5]:
    print(row)

API endpoint: https://datazimuts.com/v1/datasets/cdc_nwss_respiratory_pressure/us_state_respiratory_pressure_weekly

Tip: fetch /llms.txt for the full machine-readable catalog.

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Pinned to snapshot 20260930T174442Z-69be5765342f and its content hash, so readers get exactly the data you used.

APA

U.S. Centers for Disease Control and Prevention, National Wastewater Surveillance System. (2026). US state respiratory-illness pressure, weekly (CDC wastewater) [Data set, snapshot 20260930T174442Z-69be5765342f, sha256 69be5765342f]. Datazimuts. Retrieved 2026-10-01, from https://datazimuts.com/en/datasets/cdc_nwss_respiratory_pressure/us_state_respiratory_pressure_weekly?snapshot=20260930T174442Z-69be5765342f

BibTeX

@misc{dz_cdc_nwss_respiratory_pressure_us_state_r_69be5765,
  title        = {{US state respiratory-illness pressure, weekly (CDC wastewater)}},
  author       = {{U.S. Centers for Disease Control and Prevention, National Wastewater Surveillance System}},
  year         = {2026},
  publisher    = {Datazimuts},
  howpublished = {\url{https://datazimuts.com/en/datasets/cdc_nwss_respiratory_pressure/us_state_respiratory_pressure_weekly?snapshot=20260930T174442Z-69be5765342f}},
  note         = {Snapshot 20260930T174442Z-69be5765342f, sha256 69be5765342fce97d470c019c2cc1e05ceb2507b959b2d8e19f57bd13a82e41c; accessed 2026-10-01}
}

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US state respiratory-illness pressure, weekly (CDC wastewater)

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