Sig Air Quality Index (AQI)

Loading live AQI data...

Loading weather snapshot...

Loading historical AQI trends...

Sig, nestled in the Mascara Province of Algeria, occupies a unique geographic position within the country’s northwest. Located at coordinates 35.5278, -0.1861, the city is situated on the foothills of the Tell Atlas mountain range, a landscape characterised by rolling hills and fertile plains. This terrain significantly influences local air quality; the hills can trap pollutants, leading to localised concentrations, while the plains facilitate their wider dispersal depending on prevailing winds. The city’s elevation, approximately 800 meters above sea level, contributes to cooler temperatures and potentially increased temperature inversions during calmer periods. Sig isn’t directly adjacent to a major body of water, though it benefits from proximity to seasonal wadis and streams originating in the Atlas Mountains. The surrounding region is predominantly agricultural, with olive groves and cereal crops dominating the landscape. While Sig isn’t a major industrial hub, smaller-scale industrial activity and the increasing number of vehicles contribute to localised emissions. The urban-rural gradient is relatively sharp, with agricultural land quickly transitioning to denser residential areas as one approaches the city centre. This proximity to agricultural practices introduces potential for particulate matter from dust and seasonal burning.

Air quality in Sig experiences distinct seasonal variations, largely dictated by meteorological patterns. Winter (December-February) often sees poorer air quality due to temperature inversions – cold air trapped beneath warmer layers – preventing pollutant dispersal. Reduced wind speeds during these months exacerbate the issue, concentrating emissions from residential heating, primarily wood and charcoal. Spring (March-May) brings improvement as winds increase and rainfall washes away accumulated pollutants, though dust from agricultural activities can be a concern. Summer (June-August) is generally the clearest period, with strong, dry winds effectively dispersing pollutants. However, prolonged heatwaves can lead to increased ozone formation. Autumn (September-November) sees a transition, with decreasing temperatures and calmer conditions potentially leading to localised pollution build-up, particularly from agricultural burning as farmers prepare fields for winter. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter mornings and autumn evenings. Monitoring wind direction is crucial; winds from the south can carry dust from agricultural areas. Avoiding peak traffic hours can also minimise exposure. The dry climate necessitates staying hydrated to mitigate respiratory irritation.