Which is more harmful, high CO2 indoor or PM2.5 outdoor
Smoke has enveloped the outdoors in my area, the pm2.5 in the area is high, currently at levels categorized as very unhealthy AQI 201-300.
I don't have many indoor plants so the CO2 level inside is real high, our CO2 meter (Netatmo) device is currently reading 3596ppm.
What is a good framework for determining risks? Would going outside with a air filtration mask make most sense in the immediate term?
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Given the levels you're describing, I'd stay inside, but it's a close call.
Pulling up a random Carbon Dioxide Safety Data Sheet, the long-term exposure limit for carbon dioxide is 5000 parts per million according to NIOSH, ACGIA, and the latest OSHA standards (OSHA 1989 permitted 10,000 ppm). The 3600 ppm your meter is reporting is below that, while the PM2.5 level outside is solidly into the "unsafe" range.
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