Can You Convert Any AQI to Cigarettes? Check These Inputs First
Only a confirmed U.S. PM2.5 AQI belongs in an AQI-to-cigarettes conversion. Use this checklist for dominant pollutants, international indexes, sensors, and forecasts.
7 min read
Air Quality Insights
Source-linked guides for understanding air quality and making practical decisions
How to Read the AirNow Fire and Smoke Map
Learn what permanent monitors, temporary monitors, corrected sensors, fire icons, smoke plumes, trends, and Smoke Outlooks mean on the AirNow map.
8 min read
Why Do Air Quality Apps Show Different AQI Numbers?
AirNow, PurpleAir, Google, and weather apps can disagree without a simple error. Diagnose differences in pollutant, index, location, time window, sensor correction, and modeling.
7 min read
Air Purifier Buyer's Guide: HEPA, MERV, and CADR Explained
Choose an air purifier using smoke CADR, verified particle filtration, room size, noise, and operating cost—not unsupported marketing claims.
8 min read
Air Quality in Major Cities: How to Compare the Data Correctly
Compare city air quality without misusing average AQI, using current WHO guidance and traceable official PM2.5 examples with explicit years and monitoring scopes.
8 min read
Beijing vs New York Air Quality: What the Official Trends Show
Compare Beijing and New York with official PM2.5 monitoring data, clear time periods, and an honest explanation of why the two datasets are not interchangeable.
7 min read
Best Air Quality Apps and Monitoring Tools in 2026
Compare AirNow, IQAir AirVisual, and PurpleAir Map by region, platform, forecast, wildfire use, and hyperlocal coverage with our verified app finder.
8 min read
Children and Air Pollution: A Practical Guide for Parents
Use official AQI guidance, school activity plans, cleaner indoor air, and symptom-aware decisions to reduce children's exposure without unsupported cutoff rules.
7 min read
Creating a Clean Air Room: A Safe Step-by-Step Setup
Build a cleaner-air room for wildfire smoke with correct CADR sizing, safe HVAC settings, filtration, monitoring, and clear heat, carbon monoxide, and evacuation limits.
8 min read
European City Air Quality: Progress, Policies, and the Work Still Ahead
A source-based review of air-quality progress in London, Paris, and Stockholm, with official data, policy limits, and no unsupported clean-city claims.
8 min read
Exercise in Polluted Air: How to Adjust Your Workout
Decide whether to exercise outside using the main pollutant, official AQI activity guidance, workout duration and intensity, symptoms, and cleaner-air alternatives.
7 min read
India Air Quality: Official PM2.5 Data and How to Read the Indian AQI
Understand India's air pollution with official PM2.5 data, the CPCB AQI system, National Clean Air Programme results, and a clear warning against mixing Indian and U.S. AQI.
8 min read
Indoor vs Outdoor Air Quality: A Practical Decision Guide
Learn when outdoor air enters a home, when to ventilate, when to filter, and how source control, smoke, heat, and combustion change the right decision.
7 min read
Long-Term Air Pollution Effects: What the Evidence Actually Shows
A careful review of long-term PM2.5 health evidence, certainty levels, relative risk, exposure limits, and claims the research cannot make about an individual.
8 min read
N95 Respirators for Air Pollution: Fit, Limits, and Safe Use
Learn what an N95 certification means, how fit changes protection, what respirators cannot filter, and how to choose and use one during smoke or particle pollution.
8 min read
PM2.5 vs PM10 vs Ozone: Why the Pollutant Changes the Advice
Compare PM2.5, PM10, ozone, and the other U.S. AQI pollutants, then choose guidance and tools that match the pollutant actually being reported.
8 min read
Current AQI, NowCast, Daily AQI, and Forecasts Explained
Learn the difference between current AQI, AirNow's NowCast, a final daily AQI, and an AQI forecast so you can plan without treating predictions as measurements.
8 min read
Wildfire Smoke and AQI: Why Air Quality Changes Far Downwind
Understand how wildfire smoke travels, why PM2.5 AQI changes quickly, how to read official smoke data, and what to do indoors, outdoors, in a vehicle, or during evacuation.
8 min read
How PM2.5 Affects Health: What the Evidence Shows
Learn what PM2.5 is, which short- and long-term health effects are well established, who is more vulnerable, and how to reduce exposure.
7 min read
The Science Behind AQI to Cigarettes Conversion
See how a U.S. PM2.5 AQI becomes a cigarette-equivalent estimate, where the 22 µg/m³ benchmark comes from, and what the result cannot tell you.
6 min read
Go beyond the article list
Use the calculator, compare common AQI levels, or start with a scenario page built around the decision you need to make.