Fine particles
48.9µg/m³Moderate · 1 hourCAMS model • Open-Meteo
RiyadhAir quality, PM2.5 and PM10
Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.
Riyadh - latest available concentrations (October 7, 2026, 04:00 local time): PM2.5: 48.9 µg/m³, PM10: 87.3 µg/m³, O₃: 5 µg/m³, NO₂: 86.4 µg/m³, SO₂: 84.4 µg/m³, CO: 839 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →
4 weather warnings in effect for Saudi Arabia
Riyadh · Air pollutant concentrations
Data time: October 7, 2026 · 04:00 · local timeParticulate matter
87.3µg/m³Moderate · 1 hourOzone
5µg/m³Good · 1 hourNitrogen dioxide
86.4µg/m³Poor · 1 hourSulphur dioxide
84.4µg/m³Moderate · 1 hourCarbon monoxide
839µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Riyadh
Riyadh - air pollution over recent days (2026-08-31 - 2026-10-06)
Concentrations of all available pollutants for this city.
PM2.5Lowest 69.31 2026-10-06Highest 254.17 2026-10-032026-08-31 - 2026-10-06
PM10Lowest 380.11 2026-10-06Highest 2,254.42 2026-10-032026-08-31 - 2026-10-06
O₃Lowest 43.29 2026-10-04Highest 119.29 2026-09-062026-08-31 - 2026-10-06
NO₂Lowest 20.43 2026-10-03Highest 62.48 2026-10-062026-08-31 - 2026-10-06
SO₂Lowest 30.2 2026-10-03Highest 68.08 2026-10-062026-08-31 - 2026-10-06
COLowest 182.96 2026-09-05Highest 368.13 2026-10-062026-08-31 - 2026-10-06
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-10-06 | 2026-10-05 | 2026-10-04 | 2026-10-03 | 2026-10-02 | 2026-10-01 | 2026-09-30 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 69.31 | 81.75 | 205.92 | 254.17 | 189.75 | 218.3 | 160.22 | 183.65 | 110.91 | 169.44 | 83.8 | 145.69 | 225.38 | 171.2 | 133.73 |
| PM10 | 380.11 | 545.15 | 1,784.33 | 2,254.42 | 1,593.41 | 1,897.73 | 1,158.22 | 1,614.96 | 776.57 | 1,364.47 | 660.58 | 1,006.72 | 1,497.26 | 1,231.95 | 903.1 |
| O₃ | 46.75 | 48.25 | 43.29 | 57.79 | 75.96 | 60.08 | 64.04 | 62.08 | 119.29 | 104.71 | 65.96 | 85.08 | 87.29 | 85.33 | 90.42 |
| NO₂ | 62.48 | 47.85 | 29.17 | 20.43 | 26.38 | 36.32 | 42.27 | 29.3 | 30.6 | 22.59 | 28.08 | 37.62 | 38.04 | 29.39 | 35.53 |
| SO₂ | 68.08 | 55.02 | 36.29 | 30.2 | 46.92 | 50.8 | 49.1 | 39.5 | 52.15 | 39.46 | 41.83 | 56.52 | 57.47 | 46.67 | 59.68 |
| CO | 368.13 | 302.42 | 215.67 | 183.54 | 229.54 | 262.17 | 327.58 | 226.67 | 232.38 | 182.96 | 187.75 | 228.25 | 225 | 220.04 | 232.83 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
Environment and quality of life ratings · Riyadh
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Riyadh | Bahrain | Kuwait | United Arab Emirates | Iraq | Qatar |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 42% | 34% | 45% | 58% | 40% | 52% |
| particulate matter PM2.5 (µg/m³) | 72.8 | — | — | — | — | — |
| Pleasure of spending time in the city | 43% | 36% | 46% | 62% | 43% | 51% |
| particulate matter PM10 (µg/m³) | 211.7 | — | — | — | — | — |
| Air Pollution | 69% | 74% | 69% | 49% | 66% | 63% |
| Garbage Disposal | 51% | 49% | 43% | 68% | 32% | 67% |
| Availability and quality of drinking water | 72% | 66% | 61% | 67% | 45% | 63% |
| Cleanliness and tidiness | 54% | 53% | 42% | 74% | 39% | 67% |
| Noise and Light pollution | 52% | 55% | 50% | 51% | 52% | 56% |
| Water Pollution | 43% | 51% | 52% | 39% | 63% | 45% |
Air quality in nearby cities
All cities →Saudi Arabia↗
Unaizah
PM2.532.5
PM10168.6
µg/m³
PM2.5 · ModerateNO₂ 2.9O₃ 74
October 7, 202604:00
Saudi Arabia↗
Buraidah
PM2.535.3
PM10160.2
µg/m³
PM2.5 · ModerateNO₂ 5.2O₃ 76
October 7, 202604:00
Saudi Arabia↗
Dammam
PM2.543.5
PM1063.6
µg/m³
PM2.5 · ModerateNO₂ 38.9O₃ 34
October 7, 202604:00
Saudi Arabia↗
Al Hufūf
PM2.534.8
PM1053.3
µg/m³
PM2.5 · ModerateNO₂ 22.1O₃ 32
October 7, 202604:00
Saudi Arabia↗
Jubail
PM2.550.5
PM1070.8
µg/m³
PM2.5 · PoorNO₂ 9.5O₃ 81
October 7, 202604:00
Saudi Arabia↗
Khobar
PM2.538.3
PM1071.5
µg/m³
PM2.5 · ModerateNO₂ 29.7O₃ 71
October 7, 202604:00
Saudi Arabia↗
Ha'il
PM2.556
PM10190
µg/m³
PM2.5 · PoorNO₂ 7.8O₃ 34
October 7, 202604:00
Saudi Arabia↗
Medina
PM2.522.9
PM1056.1
µg/m³
PM2.5 · ModerateNO₂ 15.4O₃ 39
October 7, 202604:00
Saudi Arabia · air quality in other cities
WEATHER & SURROUNDINGS
Riyadh · weather forecast
Daily maximum and minimum temperatures. Forecast point: 24.7117, 46.7242.
Scroll the forecast to see the following days.
Riyadh · October 4, 2026: minimum temperature 28.1°C, maximum 38.3°C. Wind: 11.9 km/h. Humidity: 18%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-10-04 | 36.4 | 28.1 | 38.3 | 32.2 | — | 3.3 | 18 | 4 |
| 2026-10-05 | 35.3 | 27.2 | 38.3 | 32 | — | 2.4 | 18 | 3 |
| 2026-10-06 | 36.6 | 26.1 | 38.3 | 32.5 | — | 2 | 14 | 6 |
| 2026-10-07 | 37.5 | 26.3 | 39.2 | 32.4 | — | 2.2 | 10 | 1 |
| 2026-10-08 | 37.6 | 27.9 | 39.1 | 31.7 | — | 2.7 | 12 | 99 |
| 2026-10-09 | 37.6 | 26.9 | 38.3 | 32.1 | — | 3.1 | 11 | 1 |
| 2026-10-10 | 36.3 | 25.3 | 37.5 | 32.2 | — | 2.9 | 10 | 7 |
| 2026-10-11 | 36.4 | 26.6 | 37.2 | 31.1 | — | 4.4 | 13 | 24 |
| 2026-10-12 | 35.5 | 26.5 | 36.2 | 31.5 | — | 5.3 | 15 | 15 |
| 2026-10-13 | 35.1 | 26.4 | 36.3 | 30.2 | — | 4 | 15 | 64 |
| 2026-10-14 | 35.9 | 25.9 | 37.1 | 30.9 | — | 3.8 | 13 | 58 |
| 2026-10-15 | 37.2 | 27.6 | 37.8 | 32.8 | — | 3.2 | 12 | 2 |
| 2026-10-16 | 36.2 | 28 | 37.4 | 30.4 | — | 4 | 11 | 62 |
| 2026-10-17 | 35.1 | 24.9 | 37.8 | 32 | — | 4.7 | 17 | 16 |
| 2026-10-18 | 37.4 | 26.9 | 37.9 | 31.8 | — | 5.7 | 11 | 10 |
| 2026-10-19 | 37.2 | 27.6 | 37.6 | 31.3 | 0.9 | 5.5 | 12 | 41 |
| 2026-10-20 | 36.7 | 27.5 | 36.9 | 31 | 0.1 | 5.3 | 11 | 52 |
| 2026-10-21 | 36.3 | 26.9 | 36.3 | 36.3 | — | 7.2 | 12 | — |
UV index by day · Riyadh
City data.
SPF 30-50, hat and sunglasses are a must. Better to stay in the shade 11:00-15:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Riyadh · October 6, 2026: UV index: 7.6 .
| Indicator | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 | 2026-10-11 | 2026-10-12 | 2026-10-13 | 2026-10-14 | 2026-10-15 | 2026-10-16 | 2026-10-17 | 2026-10-18 | 2026-10-19 | 2026-10-20 | 2026-10-21 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 7.6 | 7.6 | 7.5 | 7.5 | 7.4 | 7.2 | 7.1 | 7.1 | 7.1 | 7 | 7 | 7 | 6.9 | 6.9 | 6.8 | — |
AIR QUALITY QUESTIONS
Riyadh · air pollution - questions and answers
What do the latest air quality data show for Riyadh?
Riyadh - latest available concentrations (October 7, 2026, 04:00 local time): PM2.5: 48.9 µg/m³, PM10: 87.3 µg/m³, O₃: 5 µg/m³, NO₂: 86.4 µg/m³, SO₂: 84.4 µg/m³, CO: 839 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Riyadh over the past week?
The highest available daily mean PM2.5 was 254.2 µg/m³ (October 3, 2026). This comparison covers 7 days with data in the seven days before October 7, 2026. The day of the latest reading is excluded because it may be incomplete.
Is the PM2.5 concentration for Riyadh an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Riyadh?
For October 6, 2026, the forecast UV index is 7.6. The UV section also shows the following available days.
What wind speed is forecast for Riyadh?
For October 4, 2026, forecast wind speed is 11.9 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.