MAPUSA
Heavy downpours in July brought exceptional ambient air quality across Goa, with no monitored day falling into the ‘moderate’, ‘poor’ or ‘severe’ categories.
According to National Air Quality Monitoring Programme (NAMP) data for July 2026, all 16 reporting stations recorded ‘good’ or ‘satisfactory’ air quality. However, Cuncolim and Tilamol recorded no data due to technical downtime and maintenance issues, raising concerns over monitoring coverage.
Rain washes suspended particulate matter (PM10 and PM2.5) from the atmosphere, while wet conditions suppress road dust. However, clean monsoon readings do not mean pollution sources have disappeared, and air quality may deteriorate when rainfall recedes.
Coastal & mining belts lead in cleanest days
Panaji recorded ‘good’ air quality on 30% of days and ‘satisfactory’ levels on 70%.
Baina recorded ‘good’ air on nearly 70% of monitored days, with the remaining 30% classified as ‘satisfactory’. Margao followed, with over 65% of days rated ‘good’.
Mining and industrial belts, including Codli, Usgao and Assanora, also recorded substantial spells of ‘good’ air, attributed to reduced heavy transport movement and rain-suppressed dust emissions.
In Mapusa, Ponda, Vasco, Tuem, Kundaim and Honda, ‘satisfactory’ air quality accounted for 70% to 90% of the month’s readings. Although no station recorded days in the three poorer categories, the proportion of ‘good’ days varied across locations.
Monitoring blackout at two key stations
Cuncolim, an industrial area frequently scrutinised for air emissions, and Tilamol recorded no monitoring data during July.
“Monsoon precipitation effectively acts as a natural air washer, settling suspended particulate matter (PM10 and PM2.5) that otherwise spikes during drier months due to vehicular exhaust and road dust,” an environmental engineer from the Goa State Pollution Control Board (GSPCB) said.
Monsoon relief may not last
Rainfall reduces airborne dust and washes particles from the atmosphere. However, road dust, construction, vehicular movement and industrial emissions may have a greater impact during drier months.
July’s data offers encouraging evidence of cleaner monsoon air, but year-round monitoring, particularly in industrial areas, remains important to assess pollution levels accurately.
