Amman Air Quality Index (AQI)
Jordan's capital — sharav dust storms, aging vehicle fleet, refugee population pressure
Jordan's Air Quality Context
Amman is a city transformed — from ~900,000 people in 1990 to over 4.2 million today, driven partly by successive refugee waves (Iraqis after 2003, Syrians after 2011, Palestinians ongoing). This demographic pressure on energy, transport, and waste systems is a primary air quality driver. Amman's annual PM2.5 of 24 μg/m³ is 4.8× WHO guidelines.
Monthly AQI Pattern
Data: Estimated monthly averages based on IQAir/OpenAQ records and Jordan MoE reports.
The Sharav Wind: Amman's Dust Storm Engine
What is sharav?
The sharav (Hebrew/Arabic origin, called “khamsin” in Egypt and “sirocco” further west) is a hot, dry southerly-to-easterly wind that descends from the Arabian Desert. In Arabic, “khamsin” means fifty — referring to the fifty days around the spring equinox when these storms are most frequent.
Effect on AQI
During a sharav event, PM10 in Amman can reach 400–600 μg/m³ — versus a normal day's 50–80 μg/m³. Visibility drops to 1–2 km. The sky turns yellow-brown. These events typically last 1–3 days before Atlantic/Mediterranean air restores normal conditions.
Sharav Season Quick Facts
- Peak months: March–May (spring transition)
- Frequency: 5–15 events per spring
- Duration: 1–3 days each
- PM10 during event: 400–600 μg/m³
- PM2.5 during event: 60–100 μg/m³
- AQI during peak event: 150–200+
- Health impact: Close schools on worst days, masks advised
Zarqa: Jordan's Industrial Pollution Belt
Zarqa, 20 km northeast of central Amman, hosts Jordan's primary industrial corridor — including the Jordan Petroleum Refinery (capacity 65,000 bbl/day), cement plants, fertilizer factories, and textile dyeing operations. Wind direction is a critical factor: when easterly or northeasterly winds blow, Zarqa's industrial emissions drift directly into Amman's residential areas.
Amman Pollutant Breakdown
| Pollutant | Annual Avg | WHO Limit | Primary Source |
|---|---|---|---|
| PM2.5 | 24 μg/m³ | 5 μg/m³ | Vehicle exhaust, diesel heating, open burning |
| PM10 | 72 μg/m³ | 15 μg/m³ | Desert dust (sharav), construction, unpaved roads |
| NO₂ | ~32 μg/m³ | 10 μg/m³ | Vehicle exhaust, diesel power generators |
| O₃ | ~48 μg/m³ | 60 μg/m³ | Photochemical smog in summer heat |
| SO₂ | ~12 μg/m³ | 40 μg/m³ | Zarqa oil refinery, diesel fuel combustion |
Amman vs Middle East Cities
| City | Annual AQI | Key Factor |
|---|---|---|
| Cairo | 148 | Black Cloud + Khamsin |
| Tehran | 135 | Mountain inversions + old fleet |
| Baghdad | 122 | Desert dust + oil infrastructure |
| Riyadh | 102 | Central desert location |
| Amman ◀ | 88 | Sharav dust, vehicles |
| Dubai | 92 | Shamal + construction |
| Beirut | 82 | Crisis-era generator use |
Health Advisory by Group
Limit outdoor play on dust event days. Keep windows closed when sharav wind is active (yellow-brown sky). Use air purifiers indoors.
Keep rescue inhalers accessible year-round. Wear N95 mask during sharav events. Monitor AQI daily March–May.
Schedule heavy outdoor work for morning hours. Wear a P2/N95 mask when PM10 exceeds 150 μg/m³. Employers should pause construction during sharav.
December–January: cleaner air, pleasant temperatures. Avoid March–May for best AQI. Petra visits should be planned with dust forecast awareness.
Amman Air Quality FAQ
What causes Amman's air pollution problem?
Amman's air quality is shaped by three main factors: (1) Desert dust — Jordan sits at the edge of the Syrian Desert and Arabian Peninsula; 'sharav' (khamsin-type) hot dry winds in spring carry massive dust loads that can push AQI above 150; (2) Vehicle emissions — Jordan has an aging vehicle fleet with poor emission standards; diesel cars, trucks, and a lack of public transport alternatives create persistent NO₂ and PM2.5; (3) Refugee population expansion — Jordan hosts 1.3 million registered Syrian refugees (and estimated 750,000 unregistered), which has dramatically increased Amman's population and informal energy use including open burning and diesel generators in refugee settlements.
What is the sharav wind and how does it affect Amman's AQI?
The sharav (also called khamsin or hamsin in Arabic — meaning 'fifty days') is a hot, dry wind that blows from the Arabian Peninsula and Syrian Desert across Jordan, typically March through May. The sharav can raise temperatures by 10–15°C in hours and carries heavy sand and dust loads. During a severe sharav event, Amman's PM10 can reach 400–600 μg/m³ and AQI can spike to Very Unhealthy or Hazardous within hours. The events typically last 1–3 days before Mediterranean Atlantic air restores normal conditions.
How does Jordan's refugee crisis affect Amman's air quality?
Jordan is one of the world's largest refugee-hosting nations per capita. The population surge — primarily from Syria since 2011 and ongoing from Iraq — has increased Amman's population from ~2.5 million to over 4.2 million metro area. The environmental effects include more vehicles on roads, increased diesel generator use in informal camps and neighborhoods, more open waste burning, and higher industrial demand. Zaatari refugee camp north of Amman burns garbage and wood at scale. The World Bank estimates Jordan's air quality burden increased significantly from 2011 onward due to the demographic pressure.
Is Amman's air quality getting better or worse?
Amman is on a slow improving trend in some metrics but faces countervailing pressures. Positives: the government has gradually tightened vehicle emission standards, natural gas is increasingly used for home heating replacing heavy fuel oil, and there is public awareness about dust season. Negatives: the city's population has grown 60% in 15 years, vehicle density has surged, and climate change is making spring dust events more frequent and intense. The net result is a relatively flat trend line with significant year-to-year variability depending on dust event frequency.
When is the best time to visit Amman for air quality?
December and January are typically the cleanest months in Amman — winter rains wash dust from the air, temperatures are cool, and the sharav season has not yet begun. Avoid March–May for the best air quality experience, as this is peak sharav dust season. Autumn (October–November) is moderate — rain begins to clean the air but dust events can still occur. If you must visit in spring, monitor AQI apps daily and stay indoors on high-dust days, especially those with the characteristic yellowish haze.