Push data from specific PurpleAir sensors to an Apple Watch complication with Pushover

aqi.py

import requests
import json

from datetime import timedelta
from datetime import datetime


def calcAQI(Cp, Ih, Il, BPh, BPl):
    a = (Ih - Il)
    b = (BPh - BPl)
    c = (Cp - BPl)
    return round((a/b) * c + Il)


def aqiFromPM(pm):
    if (pm > 350.5):
      return calcAQI(pm, 500, 401, 500, 350.5)
    if (pm > 250.5):
      return calcAQI(pm, 400, 301, 350.4, 250.5)
    if (pm > 150.5):
      return calcAQI(pm, 300, 201, 250.4, 150.5)
    if (pm > 55.5):
      return calcAQI(pm, 200, 151, 150.4, 55.5)
    if (pm > 35.5):
      return calcAQI(pm, 150, 101, 55.4, 35.5)
    if (pm > 12.1):
      return calcAQI(pm, 100, 51, 35.4, 12.1)
    if (pm >= 0):
      return calcAQI(pm, 50, 0, 12, 0)


sensors = [
    4506,   # New school
    40769,  # Jefferson
    59693,  # Farm house
]


def get_sensor(name):
    res = requests.get("https://www.purpleair.com/json", params={"show": name})
    data = res.json()
    values = [float(x["PM2_5Value"]) for x in data["results"]]
    return aqiFromPM(sum(values) / len(values))


def glance(now, text):
    res = requests.post("https://api.pushover.net/1/glances.json", data={
        "token": "...",
        "user": "...",
        "title": "Purple Air",
        "text": text,
        "subtext": now.strftime("%I:%M%p")
        })
    return res


def main():
    values = [str(get_sensor(s)) for s in sensors]
    now = datetime.now() - timedelta(hours=7)
    post = False
    if now.hour > 6 and now.hour < 22:
        post = True
        res = glance(" | ".join(values))
        print(post, now, values, res, res.text)
        return
    print(post, now, values)


main()