Indoor air quality is becoming a core indicator of how well a building performs. As expectations rise around comfort, energy use, and operational clarity, 2026 will be a year when IAQ is measured more precisely and managed more intelligently. These shifts reflect where the industry is headed and what building teams should prepare for as they plan new projects, updates, and long-term strategies. 

Below are the IAQ trends set to influence building performance in 2026 along with what they mean for the teams responsible for keeping indoor environments healthy and efficient. 

1. Performance-Based Ventilation Becomes the New Standard 

Buildings are moving beyond fixed ventilation assumptions and toward strategies driven by real indoor conditions. Performance-based ventilation gives teams the ability to match airflow to what is actually happening inside the building. 

Why this matters to building teams: 

• Reduces unnecessary outdoor air loads resulting in cost savings. 

• Improves airflow balance across zones 

• Supports energy and decarbonization goals 

• Reduces comfort complaints tied to CO2 or temperature swings 

• Provides clear documentation of ventilation performance 

Tools that support real-time ventilation decision-making, including zone-level monitoring solutions such as Fellowes Array, help teams see how conditions vary across a building and where adjustments can deliver the most impact. 

2. AI and Machine Learning Shift IAQ From Reactive to Predictive 

AI is becoming a practical part of building operations. Instead of reacting to IAQ problems, systems can anticipate them and adjust ventilation or filtration before conditions decline. 

What this unlocks for facility teams: 

• Early identification of failing components 

• Alerts before IAQ dips enough to trigger complaints 

• Automated adjustments based on occupancy or usage patterns 

• Less manual trending and diagnostic work 

• Better preparation for seasonal or wildfire-driven pollution events 

Analytics platforms, including those connected through the Fellowes Array Viewpoint dashboard, help teams visualize patterns and understand how IAQ shifts throughout the day. 

3. Continuous IAQ Monitoring Becomes a Baseline Expectation 

Real-time IAQ visibility is quickly becoming an essential part of how buildings demonstrate performance. More organizations are installing sensor networks that give them a clear picture of the conditions in their spaces. 

Why monitoring matters: 

• Provides defensible data for ventilation decisions 

• Helps identify under or over ventilated zones 

• Simplifies documentation for audits and funding requirements 

• Strengthens transparency for occupants and stakeholders 

• Supports coordinated HVAC and purification strategies 

For teams exploring how to begin, resources like an IAQ Assessment provide a simple entry point for understanding baseline conditions. 

4. Policy Momentum Pushes IAQ Further Into the Spotlight 

State legislation and federal proposals continue to bring IAQ into focus. Schools, workplaces, and public buildings may see increased expectations around monitoring and ventilation verification in 2026. 

What this means for your building: 

• Documentation expectations may increase 

• Monitoring may become essential for compliance 

• Ventilation performance is likely to face more scrutiny 

• Funding opportunities may require IAQ reporting or visibility 

Organizations that plan ahead with connected monitoring, filtration, and data transparency tools will be in a stronger position as standards evolve. 

5. Sensor Technology Expands What We Can Detect 

The IAQ sensor landscape is becoming more capable and more accessible. New sensing technology is helping teams understand more of what influences indoor environments. 

Implications for facility teams: 

• Better VOC classification supports improved source control 

• Ultrafine particle detection helps address environmental events like wildfire smoke infiltration 

• Humidity, pressure, temperature, and occupancy data help diagnose issues like infiltration, poor ventilation, or zones that do not recover properly. 
  More granular data allows for more thoughtful BMS programming 

Multi-pollutant sensing systems, including Array, help teams understand how different factors interact in each zone. 

6. Sustainability Goals Reshape IAQ Strategies 

Sustainability and IAQ are increasingly connected. Organizations are looking for solutions that support clean indoor air while reducing operational impact. 

Where this shows up in practice: 

• Optimized ventilation reduces HVAC strain and energy spend 

• Longer-lasting filters help reduce waste 

• IAQ performance supports ESG and wellness reporting 

• IAQ data supports building certifications such as LEED, WELL, and RESET 

• Lifecycle-focused design helps justify IAQ investments 

Solutions that combine localized purification with HVAC support, such as the Fellowes Array ecosystem, help teams maintain healthier conditions without over ventilating or oversizing equipment. 

Looking Ahead 

The year ahead will bring smarter tools, stronger expectations, and clearer indicators of what healthy indoor air should look like. For teams managing new builds, retrofits, or operational improvements, the opportunity lies in using data to guide decisions and performance throughout the year. Solutions that combine monitoring, filtration, ventilation support, and transparent reporting, such as those across the Fellowes Array platform, can help buildings stay aligned with these emerging shifts and deliver reliable performance in 2026 and beyond.