Change the color codes to those of EPA
Hi! You guys really did a great job. One small improvement will make it perfect. The current color codes are not that similar to those of EPA. Especially, the Red seems deeper than Purple, which isn't the case of those of EPA. I think you directly copy the color code from the source of EPA's AQI page.
Keep on the good job!
Webb Vetter commented
The EPA color coding should not be used.