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Most Popular
Saturday, Feb 27, 2021
Classroom and indoor CO2 Standards compared; A Look around the WorldMonday, Jan 19, 2026
A look into the plastic injection mold of the AirGradient GoThursday, Jan 15, 2026
A Small Data Point, A Much Bigger Story: Bringing Air Quality Monitoring to RachaTuesday, Jan 13, 2026
A Postcard View with A Hidden HazardWednesday, Jan 7, 2026
The Portable Air Quality Monitor We Couldn’t Find - Built Openly, Built Together
CEO Corner
Saturday, Jan 10, 2026
AirGradient Go Enclosure - A journey of optimisations and compromisesSunday, Nov 16, 2025
Launching the AirGradient Mobile App - Bringing Open, Transparent Air Quality Data to EveryoneFriday, Nov 14, 2025
Should CEOs Code? I coded an iOS app in 8 weeks to find out.Friday, Aug 15, 2025
520 Tech Readers Reveal: Reddit Beats WIRED as AI Makes Reviews Worse.Sunday, Aug 10, 2025
The Overwhelming Response to Our WIRED Story
Shorts
Saturday, May 10, 2025
Is air pollution just a human problem? Not even close.
Wednesday, Apr 23, 2025
Importance of Air Quality Monitoring Networks
Wednesday, Apr 16, 2025
Air Pollution = Climate Change? Here's the Real Connection!
Thursday, Apr 3, 2025
Meet AirGradient Open Air - The Climate Change Monitor!
Thursday, Jan 15, 2026
A Small Data Point, A Much Bigger Story: Bringing Air Quality Monitoring to Racha
Tuesday, Jan 13, 2026
A Postcard View with A Hidden Hazard
Saturday, Jan 10, 2026
AirGradient Go Enclosure - A journey of optimisations and compromises
Wednesday, Jan 7, 2026
The Portable Air Quality Monitor We Couldn’t Find - Built Openly, Built Together
Tuesday, Jan 6, 2026
Explaining VOCs, TVOC and the VOC Index
Thursday, Dec 25, 2025
160 Sensors and an Open Approach: How the Urban Unit Is Expanding Air Quality Monitoring Across Pakistan
Sunday, Dec 14, 2025
When Red in the US is Green in India - The AQI Disparity Problem
Wednesday, Dec 10, 2025
Understanding the Cost of Inaction on Air Pollution
Monday, Dec 8, 2025
The AirGradient Ecosystem in Action with Local Haze
Tuesday, Dec 2, 2025
The Air Quality Monitoring Myths that Mislead Users
Monday, Dec 1, 2025
The Demography Project’s Push to Bring Air Quality Data to Communities
Friday, Nov 28, 2025
A Different Kind of Black Friday in Klong Toey
Wednesday, Nov 26, 2025
Do Our Calibrated PMS5003 Sensors Drift?
Tuesday, Nov 18, 2025
How the Global Health Agenda Fails to Prioritize Clean Air
Monday, Nov 17, 2025
When All PM2.5 Isn’t the Same: Ensuring Reproducibility Across Environments
Sunday, Nov 16, 2025
Partnering for Cleaner Air: Expanding Nepal’s Monitoring Network with Clean Energy Nepal
Sunday, Nov 16, 2025
Launching the AirGradient Mobile App - Bringing Open, Transparent Air Quality Data to Everyone
Sunday, Nov 16, 2025
I’ve Tested 50 Air Quality Monitors. These Are the Biggest Problems I Found.
Friday, Nov 14, 2025
Should CEOs Code? I coded an iOS app in 8 weeks to find out.
Tuesday, Nov 11, 2025
How One Researcher Is Helping Lagos’s Most Vulnerable Breathe Cleaner Air
Monday, Nov 10, 2025
PM2.5 is not enough. Why toxicity matters more than mass.
Thursday, Oct 30, 2025
Beyond the numbers: the practical dilemma of size
Monday, Oct 27, 2025
Evolving Our Testing Process with Version 2 Test Reports
Tuesday, Oct 21, 2025
Do AirGradient PM2.5 Monitors Stay Accurate Over Time? We Found Out!
Thursday, Oct 16, 2025
What Visiting the Netherlands Made Me Realize About Achieving Clean Air
Wednesday, Oct 15, 2025
Inside Lagos’ First Air Quality Network and the Push for Cleaner Air
Saturday, Oct 11, 2025
The Impact of a single Air Quality Monitor - A Visit to a Slum in Lagos, Nigeria
Thursday, Oct 9, 2025
Economist Educational Foundation
Tuesday, Oct 7, 2025
Citizen Science in Action: How a Small Village in Indonesia is Shaping the Future of Clean Air
Monday, Sep 29, 2025
Clean Air for the Smallest Lungs: Why Preschools Matter in Malaysia’s Air Quality Fight
Sunday, Sep 28, 2025
Do Plants Actually Clean Indoor Air?
Wednesday, Sep 24, 2025
We Put Bosch’s Revolutionary Tiny PM Sensor Through Its Paces
Tuesday, Sep 23, 2025
Why Our Air Quality Toolkit Had to Be More Than Just Sensors
Sunday, Sep 21, 2025
How Our Shared Vision with the UNDP Led to a Powerful New Toolkit
Tuesday, Sep 16, 2025
Why Clean Air in the Philippines Feels Out of Reach: A Personal Reflection
Sunday, Sep 14, 2025
Community Engagement: The Key to Impactful Air Quality Monitoring
Thursday, Sep 11, 2025
The Hidden Challenges of Measuring NO₂
Thursday, Sep 4, 2025
Lacing Up for Cleaner Cities: How the Lagos Cityzens Hub Uses Running to Drive a Clean Air Movement
Wednesday, Sep 3, 2025
AirGradient Product Survey 2025
Saturday, Aug 30, 2025
APAD: The App Putting Pollution Detection in Your Hands
Wednesday, Aug 27, 2025
When All PM2.5 Isn’t the Same: Why Particle Size Distribution Matters for Optical PM Sensors
Tuesday, Aug 26, 2025
From Cupcakes to Clean Air Workshops: How Pacha Ayllu is Building a Healthier Future for Families in Ecuador
Tuesday, Aug 26, 2025
AirGradient Is Now Works With Home Assistant!
Friday, Aug 22, 2025
Why Real-Time Air Quality Data Might Be Making Things Worse
Thursday, Aug 21, 2025
The OpenAQ Community Ambassador Programme: How AirGradient Supports The Next Generation Of Air Quality Leaders
Wednesday, Aug 20, 2025
What If Cities in the Global South Could Predict Air Pollution Before It Happens?
Friday, Aug 15, 2025
520 Tech Readers Reveal: Reddit Beats WIRED as AI Makes Reviews Worse.
Thursday, Aug 14, 2025
Knitting the Air: Raising Awareness About Air Pollution Through The Power of Knitting
Thursday, Aug 14, 2025
You’re Smoking Everyday and You Don’t Even Know It!
Sunday, Aug 10, 2025
The Overwhelming Response to Our WIRED Story
Tuesday, Aug 5, 2025
Climate Medicine Is Still New – But It’s Exactly What We Need Right Now
Tuesday, Aug 5, 2025
From Award Winning, to ‘Not Recommended’. The flawed indoor air quality monitor review by Wired.
Tuesday, Jul 29, 2025
Carbon Offsetting The AirGradient Way
Tuesday, Jul 29, 2025
Girls for Clean Air
Friday, Jul 18, 2025
A Breath of (Not So) Fresh Air: My Reflections from the Clean Air Forum in Nairobi
Monday, Jul 7, 2025
AirGradient’s Collaboration with CALM: Clean Air Living Matters UK project
Thursday, Jul 3, 2025
Do forests help reduce PM2.5? Mapping PM2.5 at high resolution in rural areas with HealthDEEP IRL
Wednesday, Jul 2, 2025
How This Data Scientist Is Breaking Down Air Pollution One biteSized Chunk at a Time
Wednesday, Jun 25, 2025
Navigating the DePIN Frontier
Monday, Jun 23, 2025
AirGradient Invites Organizations to Join Our Mission for Clean Air
Tuesday, Jun 17, 2025
Upcoming Price Adjustment for AirGradient Monitors
Monday, Jun 16, 2025
Why We’re Giving It All Away
Sunday, Jun 15, 2025
How One Student’s Curiosity Sparked a Clean Air Movement in New Zealand
Thursday, Jun 12, 2025
Breaking Down the IAQ Industry’s Most Guarded Secret: Price
Saturday, Jun 7, 2025
Our competitors gave away pens & candies, we gave each participant a $195 air quality monitor. Why did we do this?
Saturday, May 10, 2025
Collaboration in Action: What to Expect from Air Sensor International Conference (ASIC) 2025 Bangkok
Wednesday, May 7, 2025
Finding my Way to Low-Cost Sensors at an Immense Research Gathering: The EGU2025
Tuesday, May 6, 2025
Celebrating World Asthma Day
Friday, Apr 25, 2025
AirGradient-UNDP Air Quality Toolkit
Tuesday, Apr 22, 2025
Community Air Quality Monitoring in Sumberejo, Indonesia
Tuesday, Apr 22, 2025
More Than Just Specifications - The Research and Testing Behind Our Sensor Selections
Monday, Apr 21, 2025
The Hidden Health Risks of CO2: Rethinking Acceptable Exposure Limits
Sunday, Apr 20, 2025
Air Quality Monitoring for Enhanced Revelry
Thursday, Apr 10, 2025
AirGradient and the U.S. Tariff Changes
Wednesday, Mar 26, 2025
Beyond the numbers: the fundamental dilemma of size
Wednesday, Mar 26, 2025
Enabling Affordable, Accessible & Accurate Air Quality Monitoring
Thursday, Mar 13, 2025
Update: AirGradient and the PM2.5 correction algorithm from the EPA
Monday, Mar 10, 2025
Nationwide School AQ Monitoring in Lao PDR with UNICEF
Monday, Mar 10, 2025
Airgradient ONE and Open Air - Indoor and Outdoor Open Source Air Quality Monitor
Monday, Mar 10, 2025
Are Fireproof Homes the Future of Climate Resilience?
Monday, Mar 10, 2025
My Journey to Cleaner Air While Working from Home
Saturday, Mar 8, 2025
Enhanced Air Quality Monitoring in Lao PDR: Deployment of 160 AirGradient Monitors Marks Significant Advancement of Nationwide Air Quality Information
Friday, Mar 7, 2025
The U.S. pulled the plug on air quality monitoring. We’re here to reboot it.
Friday, Feb 28, 2025
AirGradient Open Data Survey Results: How our Community wants to Share their Air Quality Data.
Tuesday, Feb 25, 2025
It’s Time to Open the Air Quality Monitor Black Boxes.
Thursday, Feb 20, 2025
Uniting Families for Clean Air: The Family-Led Observatory in Ecuador
Monday, Feb 17, 2025
Why Low-Cost Air Quality Monitors Struggle in West Africa — And How Afri-SET is Solving It
Monday, Feb 10, 2025
Redefining Our Bold Approach: AirGradient Way Forward
Saturday, Feb 8, 2025
Decoding ‘Community Air Monitoring’: When Marketing Overshadows Openness.
Saturday, Feb 8, 2025
UNICEF x AirGradient: Two-Day Workshop on Air Quality Monitoring
Tuesday, Feb 4, 2025
Should You Base Your Air Quality Monitor Purchasing Decision on AQ-SPEC Results?
Wednesday, Jan 29, 2025
Turning Air Quality Data Into Actionable Insights
Tuesday, Jan 28, 2025
Beyond the numbers: PM2.5 is not PM2.5
Tuesday, Jan 28, 2025
Beyond the numbers: the uncomfortable complexity of PM2.5
Monday, Jan 27, 2025
Illuminating Air Quality
Tuesday, Jan 21, 2025
How a Youth Organization in Honduras is Shaping a New Generation of Changemakers
Tuesday, Jan 21, 2025
Our Donation to Those Impacted by the L.A. Wildfires
Monday, Jan 20, 2025
The Weight of the One Percent Unhappy Customers
Saturday, Jan 18, 2025
They Add More Pollutants; We Add More Accuracy. Why We’re Stepping Back from PM1 and PM10 Marketing
Wednesday, Jan 15, 2025
Update on PMS5003 Calibrations
Wednesday, Jan 15, 2025
We Don’t Love Subscriptions. But the AirGradient Dashboard Needs Them
Friday, Jan 10, 2025
Can You Trust Google Maps’ New Air Quality Feature?
Friday, Dec 27, 2024
AirGradient’s Next Step: Introducing the Clean Air Advocates Program
Monday, Dec 23, 2024
The Right to Repair and Air Quality Monitors: Why Longevity Should Be a Standard, Not a Luxury
Sunday, Dec 22, 2024
AirGradient’s Young Leaders
Friday, Dec 13, 2024
How Our Black Friday Initiative Supports OpenAQ’s Mission for Clean Air
Tuesday, Dec 10, 2024
How Accurate is the Sensirion SGP41 TVOC Sensor?
Thursday, Dec 5, 2024
Study Finds Strong Link Between Wildfire Smoke and Dementia
Sunday, Dec 1, 2024
How Our Ukrainian Developers Find Strength and Purpose Amidst Conflict & Chaos
Friday, Nov 29, 2024
Why We’re Doing Black Friday Differently This Year
Thursday, Nov 14, 2024
Air Quality Monitors Compared: AirGradient ONE vs Apollo AIR-1
Thursday, Nov 14, 2024
Air Quality Sensors and Drones Workshop at the Swiss Federal Laboratories for Materials Science and Technology (Empa)
Thursday, Nov 7, 2024
Why We’ve Decided to Change Our CO2 Sensor
Sunday, Oct 20, 2024
The Costs of Opacity: A Case for More Openness in the Indoor Air Quality Monitor Industry
Thursday, Oct 17, 2024
Low Readings from Plantower PMS5003
Wednesday, Oct 2, 2024
A Tough Decision at AirGradient
Wednesday, Oct 2, 2024
Every Air Quality Monitor Tells a Story
Sunday, Sep 22, 2024
From DIY Air Purifiers to a Global Movement: The Story of Smart Air
Saturday, Sep 21, 2024
Low Cost CO2 Sensors Comparison: Photo-Acoustic vs NDIR
Wednesday, Sep 18, 2024
Does the EPA Correction Algorithm for Wildfire Smoke PM2.5 Developed for PurpleAir Work for AirGradient Monitors?
Monday, Sep 16, 2024
AirGradient’s Approach to Authentic Partnerships
Thursday, Sep 12, 2024
High School Students Running a PM Study in Milton, Ontario, Canada
Monday, Sep 2, 2024
AirGradient Offers Significant Discount for EPIC Air Quality Fund Applicants
Tuesday, Aug 27, 2024
Is Your Air Quality Monitor Trustworthy? How to Test and Find Out.
Friday, Aug 23, 2024
Why We Don’t Have Any Sales People
Wednesday, Aug 14, 2024
Enhancing Air Quality Data Access in Africa: A Step Towards a Cleaner Future
Wednesday, Jul 3, 2024
The Health Impacts of Smoke Inhalation and the Importance of Precautionary Measures
Friday, Jun 28, 2024
We Launched the Largest Real-Time Global CO2 Map
Monday, Jun 24, 2024
SAMHE UK School Project
Friday, Jun 21, 2024
Why I Do Not Sign NDAs
Thursday, Jun 20, 2024
Bamboo School Project
Thursday, Jun 20, 2024
Toxicity of Wildfire Smoke Could Be Ten Times Greater Than That of Ambient PM
Monday, May 27, 2024
How a Small Day Care Center in Chiang Mai Protects its Children in the Burning Season
Saturday, May 25, 2024
Air Quality Monitors Compared: AirGradient ONE vs Airthings
Tuesday, May 14, 2024
Air Quality Monitors Compared: AirGradient vs PurpleAir
Friday, May 10, 2024
Collaboration with ICIMOD
Wednesday, Apr 24, 2024
Addressing Bangkok’s Air Pollution Crisis: Efforts in Protecting Children Through Dust-Free Classrooms
Friday, Apr 12, 2024
How to Determine the Error of an Air Quality Sensor?
Tuesday, Apr 2, 2024
What do you get if you add a Determined Teacher, a Mud House, Six Air Purifiers and a Few Holes?
Wednesday, Mar 27, 2024
Open Source Hardware is Not a New Concept
Monday, Mar 18, 2024
How to Quantify the Performance of a Sensor: Precision, Reproducibility and Accuracy
Thursday, Feb 29, 2024
Why we Need more Air Quality Monitoring - An Example with Real Data
Saturday, Feb 10, 2024
Improving Air Quality in Pai, Thailand
Thursday, Feb 8, 2024
We Own All Rights to all Data Collected via Products Purchased by You.
Friday, Jan 26, 2024
Are You Just Air-Purifying Your Way Out Of This Mess?
Monday, Jan 22, 2024
We accidentally forgot about the largest environmental conference in the world!
Friday, Jan 12, 2024
TVOC - When it’s useful and when it’s useless
Sunday, Dec 31, 2023
Our Website Loads up to 4 Times Faster after Removal of (unneeded) Tracking Scripts
Sunday, Dec 31, 2023
Why Do We Need So Much Tracking? We Actually Don’t!
Monday, Dec 18, 2023
A Simple Linear Correction Algorithm for Temperature
Monday, Dec 11, 2023
How YOU Can Support Air Quality Research
Friday, Dec 8, 2023
Air Quality Hackathon
Tuesday, Nov 28, 2023
Navigating Air Pollution on Our Global Journey
Saturday, Nov 25, 2023
Using R and RStudio to Develop a Linear Regression Correction Algorithm
Sunday, Nov 12, 2023
Why do I sign and add a thank-you card for every air quality monitor we sell?
Friday, Oct 13, 2023
How we use Linear Regression to Drastically Improve Humidity Sensor Accuracy
Monday, Oct 9, 2023
Victor Takes A Stand Against Poor Air Quality
Sunday, Oct 1, 2023
Why we Wrote the AirGradient Manifesto
Tuesday, Sep 26, 2023
Are our Articles Disguised Ads?
Sunday, Sep 24, 2023
Air Quality Monitors from USD 169 to 6k use the Same Low-Cost PM Modules
Sunday, Sep 17, 2023
Should we Pay for Clicks?
Saturday, Aug 26, 2023
The Climate Change Monitor
Thursday, Aug 17, 2023
Low Cost CO2 Sensors Performance Outdoors Close to Reference Grade Instruments
Saturday, Aug 12, 2023
What we Learned Making a Plastic Injection Mold with a Chinese Mold Maker
Tuesday, Aug 1, 2023
Our Open Source Open Hardware Vision
Monday, Jun 26, 2023
You might NOT own the Data of Your Air Quality Monitor
Wednesday, May 17, 2023
The link between Climate Change and Air Pollution
Wednesday, Apr 19, 2023
Health Impacts Of Air Pollution Across the Life Course
Wednesday, Apr 12, 2023
Air Quality Monitors: When Paying More Does Not Get You More Accuracy
Tuesday, Apr 4, 2023
Why We Joined 1% For The Planet
Monday, Mar 27, 2023
The Hidden Cost of Air Quality Monitoring
Wednesday, Mar 8, 2023
Licensing and Monetization of our Open Source Air Quality Monitors
Wednesday, Feb 15, 2023
Our Stories and Beliefs
Monday, Jan 30, 2023
AirGradient TVOC Monitoring Survey Results
Tuesday, Jan 10, 2023
Co-Location project
Friday, Dec 16, 2022
When Mimi is Better than Mini or When a Clone is Better than the Original?
Thursday, Dec 15, 2022
Launching the Open Air Outdoor Monitor
Wednesday, Jul 13, 2022
Good Hardware Takes Time- The Journey of the AirGradient DIY Kit Production
Saturday, Jan 22, 2022
Air Purifier vs. Positive Pressure Fresh Air System – an unfair Battle?
Saturday, Feb 27, 2021
Ikea Vindriktning Air Quality Sensor Review and Accuracy
Saturday, Feb 27, 2021
Classroom and indoor CO2 Standards compared; A Look around the World
Tuesday, Jan 19, 2021
Breathe Safe Air Blog
Friday, Nov 20, 2020
How to write a School Policy on Air Quality
Wednesday, Oct 28, 2020
The making of our DIY enclosure
Tuesday, Aug 11, 2020
Use the Real-time Outdoor Activity Risk (ROAR) Guideline to complement your school’s AQI policy
Saturday, Aug 1, 2020
Review: Nicholas and his incredible Eyesight
Tuesday, Jun 30, 2020
Why Air Quality is such a Successful Marketing Opportunity – a look at Maslow’s Hierarchy of Needs
Tuesday, Jun 23, 2020
Design your School’s Air Quality Management to be a Growth and Profit Maker
Thursday, Feb 20, 2020
Air Quality at Schools – A Holistic Approach
Sunday, Feb 16, 2020
8 Student Experiments to Measure Air Quality
Friday, Feb 7, 2020
6 Ways to Improve Air Quality in Classrooms
Friday, Feb 7, 2020
We Measured the CO2 Level in a Classroom. This is What We Found Out.
Wednesday, Jan 8, 2020
Living in an Area with High Air Pollution? Consider Positive Pressure Systems.
Saturday, Dec 28, 2019