Air Quality Info

 

Current Air Quality Health Advisories in place:

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Grass Valley ▪ Truckee ▪ Portola
Quincy ▪ Chester

AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_ca_nv.gif
Map data is collected from AirNow.gov.

AIR QUALITY INDEX

air quality index

AQI Forecast

Nevada County

This forecast is for the pollutant: ozone (O3)

DATE DAY FORECAST AQI ACTUAL AQI
03 / 15 / 17 Wed 48 62
03 / 16 / 17 Thu 45 42
03 / 17 / 17 Fri 45 50
03 / 18 / 17 Sat 45 46
03 / 19 / 17 Sun 50 50
03 / 20 / 17 Mon 50
03 / 21 / 17 Tue 45
03 / 22 / 17 Wed 45
03 / 23 / 17 Thu 45
03 / 24 / 17 Fri 45
03 / 25 / 17 Sat 45

Ozone levels should remain in the Good range until sometime in April or May.

In October of 2015 the EPA modified the National Ambient Air Quality Standard (NAAQS) for ozone. The old standard was 75 ppb (8 hour average). The new standard is now 70 ppb (8 hour average). Since the AQI values are based on the NAAQS, that means the AQI values are going to be a little higher this year even if the ozone values are identical to last year. Hence, we are going to have more days in the Moderate range in 2016, and even more days in the Unhealthy for Sensitive Groups range.

You may or may not have noticed, but one of the things that is unique and special about my ozone AQI forecast is that unlike almost everybody else, I let you see what the forecast was. That allows the user an opportunity to see how accurate my forecast is (or is not). That is a feature I wish the weather web sites and other AQI forecasters would add to their web pages.For Western Nevada County only, check out Ozone Maps at http://www.sparetheair.com/

To check out PM2.5 data for both Eastern and Western Nevada County, click here.  Be sure to set PM2.5 for the Parameter, and in Step 3 set the county to “Nevada”

Plumas County

To Check current PM 2.5 conditions click here. Be sure to set PM2.5 for the Parameter, and in Step 3 set the county to “Plumas”