Processed on 2024-03-04 13:39:25 PST.

Disclaimer: Data presented here come from a variety of sources and do not represent official EPA measurements. Please visit AirNow for official measurements.

Cumulative exposure to smoke is an important public health metric. This report summarizes the cumulative number of days air quality monitors in New Jersey spent in each AQI category during the the month of January.

The tables below include only permanent monitors measuring PM2.5 and show cumulative exposure under existing NAAQS (National Ambient Air Quality Standards) and under the 2024 revised standards for PM2.5.

In the tables and plots below, ‘Old’ designates cumulative days calculated using the 2023 PM2.5 NAAQS while ‘New’ is calculated using the 2024 revised PM2.5 NAAQS. The impact of the NAAQS revision is quite clear.

January in New Jersey

January 2014 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 95 53 4 0 0 0 3
New 58 90 4 0 0 0 3

January 2015 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 110 40 0 0 0 0 36
New 68 82 0 0 0 0 36

January 2016 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 181 81 0 0 0 0 48
New 125 137 0 0 0 0 48

January 2017 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 250 61 1 0 0 0 29
New 179 132 1 0 0 0 29

January 2018 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 230 99 0 0 0 0 43
New 166 163 0 0 0 0 43

January 2019 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 274 62 0 0 0 0 36
New 219 117 0 0 0 0 36

January 2020 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 300 54 0 0 0 0 18
New 245 109 0 0 0 0 18

January 2021 – 14 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 274 52 0 0 0 0 15
New 244 82 0 0 0 0 15

January 2022 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 320 69 0 0 0 0 14
New 268 121 0 0 0 0 14

January 2023 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 406 45 0 0 0 0 14
New 345 106 0 0 0 0 14