In brief
Jeddah’s 24‑hour monitoring network, launched by the National Center for Environmental Compliance, covers residential, industrial, and coastal zones and gathers data on particulate matter, gases, and weather variables. The system feeds into an Air Quality Index that categorizes readings and informs public health alerts.
In a move to enhance environmental oversight, the National Center for Environmental Compliance (NCEC) announced on November 5, 2026, that it has installed 18 air‑quality monitoring stations across Jeddah, each operating continuously to report key pollutant concentrations and meteorological data.
The network’s coverage extends to residential districts such as Al‑Matar, Obhur, Dahaban, Buraiman, Al‑Rawdah, Al‑Jami’ah, and Al‑Khumrah, as well as the historic district and an industrial area. Mobile laboratories supplement fixed sites where additional scrutiny is required, ensuring data are captured from all relevant micro‑environments.
Technical Scope of the Monitoring Instrumentation
Each station autonomously measures fine and inhalable particulate matter—commonly referred to as PM2.5 and PM10—alongside ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO). Fine particulate matter consists of microscopic particles smaller than 2.5 micrometers in diameter; in plain terms, these are dust‑like particles that can be inhaled deep into the lungs and are linked to respiratory and cardiovascular health risks.
The stations also record temperature, humidity, wind speed and direction, and visibility. Data from the National Center for Meteorology feed these variables into the system to help interpret how pollutants disperse or concentrate under different weather conditions, such as sea breezes or dust storms that are characteristic of a coastal city like Jeddah.
From Raw Numbers to the Air Quality Index
Real‑time pollutant concentrations are automatically converted into an Air Quality Index (AQI), a standardized scale that ranks the overall atmospheric condition into six categories: Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous. An AQI value above the threshold for the “Unhealthy” category triggers health advisory alerts for sensitive populations—including children, the elderly, pregnant women, and individuals with asthma or heart disease—issued by local health authorities.
The AQI system aggregates the five pollutants into a single figure, allowing city officials and the public to quickly gauge the safety level of outdoor air. The values from the 18 stations are plotted on continuous maps that display temporal and spatial variations across Jeddah, identifying hotspots near major roads, railways, or industrial facilities.
Supporting Policy and Public Health Measures
By providing granular, time‑stamped data, the monitoring network empowers the NCEC to respond proactively to pollution spikes, adjusting traffic management, industrial operations, or public transportation schedules as needed. The real‑time alerts are also disseminated through the city’s emergency communication system, ensuring that vulnerable residents receive timely guidance on reducing exposure during high‑pollution periods.
Branded as part of Saudi Arabia’s commitment to improving urban environmental quality, the 18‑station system represents a step toward integrating climate and health data in policy planning. According to the NCEC press release, the network’s deployment should be measurable by a noticeable decline in the frequency of high‑AQI alerts and an improvement in long‑term health outcomes related to air‑borne illness.
As the first phase of a larger initiative, the NCEC plans to expand the network to additional cities within the Kingdom over the coming years. In the meantime, the 24‑hour monitoring system will continue to provide the data foundation required for research on pollutant dispersion, seasonal variations, and the effectiveness of regulatory interventions in an arid, coastal metropolis.
