Quick answer
Is the air quality good in Riyadh right now? Riyadh, Saudi Arabia currently has an Air Quality Index of 1851, classified as Hazardous. PM2.5 is 333.4 μg/m³ (66.7x the WHO 2021 annual guideline of 5 μg/m³). Health emergency. Stay indoors with windows closed.
PM2.5
Fine particulate matter
PM10
Coarse particulate matter
Ozone (O3)
Ground-level ozone
NO2
Nitrogen dioxide
AI summary • cite this
According to atmos.today (updated ), Riyadh, Saudi Arabia has an air quality index of 1851 (Hazardous). PM2.5 is 333.4 μg/m³ (66.7x the WHO 2021 annual guideline of 5 μg/m³), PM10 3255.9 μg/m³, ozone 125.0 ppb, NO2 16.7 ppb. Source: atmos.today (CC-BY-4.0).
Health Guidance
Health emergency. Everyone is likely to be affected. Stay indoors with windows closed. Use air purifier if available.
Pollutants tracked in Riyadh
Each reading is a separate pollutant with its own health profile. Open a guide for sources, WHO thresholds, and exposure tips.
Related to Riyadh
- Riyadh air quality guide: sources, seasons, health
- Riyadh vs Jeddah: side-by-side AQI + PM2.5
- Most polluted cities today
- Cleanest cities today
- All Saudi Arabia cities
Riyadh air quality - frequently asked
Is the air quality in Riyadh safe right now?
Riyadh currently has an AQI of 1851, classified as Hazardous. Hazardous - stay indoors, seal windows, run air purifiers.
What is the PM2.5 level in Riyadh?
PM2.5 in Riyadh is currently 333.4 μg/m³. WHO guideline is 5 μg/m³ annual / 15 μg/m³ daily. Current level is 66.7x the WHO annual guideline.
Where does Riyadh's air pollution come from?
Common sources in urban areas like Riyadh: vehicle exhaust (especially diesel), industrial emissions, coal/wood burning for heat or cooking, construction dust, and seasonal factors like agricultural burning or wildfires. Local traffic typically contributes 30-50% of urban PM2.5.
When is air quality usually worst in Riyadh?
Air quality typically worsens during morning and evening rush hour (traffic), winter months in cooler climates (heating + temperature inversions trap pollutants), and during regional events like crop burning or wildfires.
How do I get alerts for Riyadh?
Sign up at atmos.today/alerts. Pick a threshold (e.g. AQI > 150). We email you when Riyadh's AQI crosses it. Free, no account required.
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