Processed on 2024-03-04 13:40:26 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 July.

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.

July in New Jersey

July 2014 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 110 95 0 0 0 0 19
New 43 162 0 0 0 0 19

July 2015 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 134 146 0 0 0 0 40
New 63 217 0 0 0 0 40

July 2016 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 230 88 0 0 0 0 66
New 122 196 0 0 0 0 66

July 2017 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 200 85 0 0 0 0 99
New 138 147 0 0 0 0 99

July 2018 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 250 81 0 0 0 0 53
New 154 177 0 0 0 0 53

July 2019 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 226 107 0 0 0 0 51
New 115 218 0 0 0 0 51

July 2020 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 252 73 0 0 0 0 59
New 166 159 0 0 0 0 59

July 2021 – 14 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 162 115 12 0 0 0 127
New 108 169 12 0 0 0 127

July 2022 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 325 88 0 0 0 0 35
New 182 231 0 0 0 0 35

July 2023 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 253 182 4 0 0 0 41
New 149 285 5 0 0 0 41