What is Disease Weather?

Disease Weather by Orbient shows environmental conditions for any US city or ZIP code: air quality, pollen, cold and flu activity, weather and National Weather Service alerts. It sums up current conditions in one Environmental Health Index (EHI) from 0 to 100. It is for public awareness and is not medical advice.

What data does Disease Weather use?

Air quality: EPA AirNow, OpenAQ, EPA Air Quality System and Open-Meteo air quality (CAMS). Pollen: Google Pollen API. Cold and flu activity: CDC FluView (ILINet), through Delphi Epidata. Wastewater: CDC National Wastewater Surveillance System. ER visits: CDC National Syndromic Surveillance Program. Wastewater and ER visits are shown for context and are not part of the index yet. Weather: Open-Meteo, checked against the ECMWF forecast model. Alerts: National Weather Service API, checked about every minute. Climate pattern (El Niño and La Niña): NOAA Climate Prediction Center. Rain radar: RainViewer. Outbreaks outside the US: WHO Disease Outbreak News. Mosquito and tick season is a monthly seasonal estimate based on CDC ArboNET history.

Is Disease Weather free?

Yes. Disease Weather is free to use for any US city or ZIP code.

Who builds Disease Weather?

Disease Weather is built by Orbient LLC (orbient.com). Contact: hello@orbient.com.

Disease Weather · by Orbient

WHO public health emergency: Ebola

Last updated by Disease Weather on Oct 20, 2026. These numbers are not updated automatically. Check WHO and CDC for the latest.

Bundibugyo strain (no licensed vaccine or treatment) — PHEIC declared May 2026 — second-largest Ebola outbreak ever — 9,552 confirmed cases and 4,602 deaths in DRC, data through Oct 18 — 65 health zones in seven provinces, with no steady decline yet — Kenya: first-ever cases, 8 confirmed and 1 death as of Oct 20, starting with a case imported from DRC on Oct 6 — Uganda: no active cases — CDC: risk to the US public and travelers remains low, no US cases reported. CDC Travelers Health →

WHO Disease Outbreak News

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Environmental Health Index

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Select a location

The EHI fuses air quality, disease burden, and environmental conditions into a 0–100 score. Lower is healthier.

Your Environment—

Air Quality Score—

Small Particles—

Ozone Level—

Pollen—

Your Community—

Cold & Flu Activity—

Trend—

Wastewater—

ER Visits—

Respiratory Season—

Environmental Conditions—

Temperature—

Moisture in the Air—

Wind—

Conditions—

How Disease Weather works

What does the Environmental Health Index mean?

The Environmental Health Index (EHI) is one number from 0 to 100 that sums up the conditions around a place right now. Lower is better.

0 to 24: Low
25 to 49: Medium
50 to 74: High
75 to 100: Very high

It combines three groups: Your Environment (air quality and pollen), Your Community (cold and flu activity) and Environmental Conditions (weather). How much each group counts changes with the season.

The index describes conditions, not people. It does not tell you whether you will get sick, and it is not medical advice.

What can you check for your location?

Air quality: the air quality score, small particles (PM2.5) and ozone.
Pollen: today’s pollen level.
Cold and flu activity: how much flu-like illness doctors are seeing, and whether it is rising or falling.
Wastewater and ER visits: CDC’s wastewater levels for flu, COVID and RSV, and the share of ER visits for them, for your state. These are shown for context and are not part of the index yet.
Weather: temperature, moisture in the air, wind and current conditions.
Alerts: National Weather Service warnings for your area.

Search any US city or ZIP code, or use your location.

How current is the information?

Air quality and weather: every hour.
Pollen: every day.
Cold and flu activity: every week, for your state.
Mosquito and tick season: every month, from seasonal patterns.
Weather alerts: checked about every minute.

Each panel shows when it last updated. If a source does not answer, that row shows a dash instead of a guess. If flu data can’t be reached, the flu rows show an estimate for the time of year, marked “Seasonal estimate.” Wastewater levels and ER visits come from CDC once a week.

Where does the data come from?

Air quality: EPA AirNow, OpenAQ, EPA Air Quality System and Open-Meteo air quality (CAMS)
Pollen: Google Pollen API
Wastewater: CDC National Wastewater Surveillance System
ER visits: CDC National Syndromic Surveillance Program
Cold and flu activity: CDC FluView (ILINet), through Delphi Epidata
Weather: Open-Meteo, checked against the ECMWF forecast model
Alerts: National Weather Service API
Climate pattern (El Niño and La Niña): NOAA Climate Prediction Center
Rain radar: RainViewer
Outbreaks outside the US: WHO Disease Outbreak News

Air quality & weather updated hourly · Pollen updated daily · Disease activity updated weekly (CDC ILINet, CDC wastewater, CDC ER visits) · Vector-borne risk updated monthly (seasonal proxy).

Data sources: EPA AirNow · OpenAQ / EPA AQS (PM2.5, AQI) · Open-Meteo CAMS · ECMWF IFS · Google Pollen API · CDC ILINet via Delphi Epidata · CDC NWSS wastewater · CDC NSSP ER visits · CDC ArboNET historical (Lyme, West Nile, EEE) · NOAA CPC ENSO · NWS CAP API · RainViewer radar · WHO Disease Outbreak News · USGS Hawaiian Volcano Observatory & Hawaiʻi DOH (linked advisories).

Environmental intelligence for public awareness. Not medical advice.

Disease Weather by Orbient · hello@orbient.com

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