New Ozone Nowcast to be Implemented on Thursday, August 1EPA has updated the NowCast for ozone – the technical method used to show current ozone values on AirNow.gov and will be updating the code on AirNow.gov during the evening of 8/1/19. Using this improved method, current ozone conditions will more closely represent the 8-hour average value for ozone air quality and should be more consistent with the daily AQI value.
Posted July 25, 2019, 09:51 (PT)
For a technical paper describing this change and more information about the R code and example files, please visit https://github.com/USEPA/O3-Nowcast |
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- Analyze current and past air quality events and episodes
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- View meteorological and air quality data
- Generate data reports
- Create GIS-based maps with air quality and meteorological conditions
- Sign up for the AirNow Notifier listserve
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| Color Legend | |||
|---|---|---|---|
| Green | Current | Yellow | 2 to 6 hrs old |
| Red | over 6 hrs old | Gray | Unknown status |
| September 19, 2019 20:40 (ET) | (All times are in ET) |
| Agency | Ozone | PM2.5 | PM10 |
|---|---|---|---|
| AB1 | 09/19 19:00 | 09/19 19:00 | 02/25 09:00 |
| AF1 | 09/19 19:00 | ||
| AIR | |||
| AKC | |||
| AL1 | 09/19 19:00 | 09/19 19:00 | 03/01 09:00 |
| AL2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| AL3 | |||
| AL4 | 09/19 19:00 | 09/19 19:00 | |
| ALG | 09/19 18:00 | ||
| AR1 | 09/19 19:00 | 09/19 19:00 | |
| AZ2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| AZ3 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| AZ4 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| BAA | 09/12 16:00 | ||
| BC1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| BC2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| BI1 | 09/19 19:00 | ||
| BIH | 09/19 18:00 | ||
| BK1 | |||
| BLW | 09/19 19:00 | 04/01 01:00 | |
| BPT | 09/11 14:00 | 09/19 17:00 | 04/14 18:00 |
| CA1 | 09/19 19:00 | 09/19 19:00 | 08/27 03:00 |
| CA2 | 09/19 19:00 | 09/19 19:00 | |
| CA3 | 09/19 11:00 | 09/19 11:00 | 09/19 11:00 |
| CA4 | 09/19 19:00 | 09/19 19:00 | |
| CA5 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CA6 | 09/19 18:00 | 09/19 18:00 | 09/19 18:00 |
| CA7 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CA8 | 09/19 19:00 | 09/19 20:00 | 09/19 19:00 |
| CA9 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CAT | 09/19 19:00 | 09/19 19:00 | |
| CHO | 09/19 19:00 | ||
| CI1 | |||
| CMB | 09/19 19:00 | ||
| CN1 | 09/19 19:00 | 09/19 19:00 | |
| CN3 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CN4 | 09/19 19:00 | 09/19 19:00 | |
| CO1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CO4 | |||
| CRI | 09/19 13:00 | ||
| CT1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| CUR | 06/24 16:00 | 06/24 16:00 | |
| DC1 | 09/19 19:00 | 09/19 20:38 | 09/19 19:00 |
| DE1 | 09/19 19:00 | 09/19 19:00 | |
| DN1 | |||
| DRN | 09/19 19:00 | ||
| DUS | 09/19 19:00 | ||
| EP1 | |||
| EPA | 08/21 12:00 | ||
| FL1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| FL2 | 09/19 19:00 | 09/19 19:00 | 09/29 15:00 |
| FL3 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| FL4 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| FS1 | 09/19 19:00 | 09/19 20:00 | 08/05 04:00 |
| GAB | |||
| GBU | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| GN1 | 08/07 06:00 | ||
| GOL | |||
| GT1 | 09/19 19:00 | ||
| HC1 | 09/19 19:00 | ||
| HI1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| IA1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| IA2 | 09/19 19:00 | 09/19 19:00 | |
| IA3 | 09/19 19:00 | 09/19 19:00 | |
| ID1 | 09/19 18:00 | 09/19 19:00 | 09/19 18:00 |
| IL1 | 09/19 19:00 | 09/19 19:00 | |
| IN4 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| JDA | 05/18 01:11 | ||
| JOR | 09/19 19:00 | ||
| JP1 | 12/30 02:00 | 12/30 02:00 | 12/30 02:00 |
| KAZ | 09/19 18:00 | ||
| KM1 | 09/19 20:00 | 09/19 20:00 | |
| KS1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| KY2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| LA1 | 09/19 19:00 | 09/19 19:00 | 02/01 00:00 |
| LAO | 09/19 19:00 | ||
| LC1 | |||
| MA1 | 09/19 19:00 | 09/19 19:00 | |
| MAD | 06/11 12:00 | ||
| MD1 | 09/19 19:00 | 09/19 19:00 | |
| ME1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| MEN | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| ML1 | 07/19 08:00 | ||
| MM1 | 09/19 19:00 | 09/19 19:00 | |
| MMR | 09/19 19:00 | 09/19 19:00 | |
| MO1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| MOE | |||
| MON | 09/19 18:00 | 09/19 18:00 | 09/19 18:00 |
| MS1 | 09/19 19:00 | 09/19 19:00 | |
| MT1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| NC2 | 09/19 19:00 | 09/19 19:00 | |
| NCA | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| NE1 | |||
| NE2 | 09/19 00:00 | 09/19 00:00 | 09/19 00:00 |
| NEA | |||
| NH1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| NJ1 | 09/19 19:00 | 09/19 19:00 | |
| NL1 | 09/19 19:00 | 09/19 19:00 | |
| NM2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| NOS | 09/19 18:00 | 09/19 19:00 | |
| NPS | 09/19 19:00 | 09/19 20:00 | |
| NRB | 09/19 19:13 | 09/19 19:13 | |
| NV2 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| NV3 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| OAP | 09/19 20:00 | ||
| OAQ | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| OAR | |||
| OD1 | 06/06 12:00 | ||
| OH1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| OK1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| OR1 | 09/19 19:00 | 09/19 19:00 | |
| OR2 | 09/19 19:00 | 09/19 19:00 | |
| PA1 | 09/19 19:00 | 09/19 19:00 | 06/30 23:00 |
| PA3 | 09/19 19:00 | 09/19 19:00 | |
| PIN | |||
| PK1 | 09/19 19:00 | ||
| PK2 | 09/19 19:00 | ||
| PK3 | 09/19 19:00 | ||
| PK4 | 09/19 19:00 | ||
| RI1 | 09/19 19:00 | 09/19 19:00 | |
| RIY | 07/08 06:00 | ||
| SC1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| SD1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| SFN | 03/05 07:00 | ||
| SHA | 09/19 19:00 | ||
| SIC | |||
| SIS | 09/19 20:00 | 09/19 19:00 | |
| SK1 | 09/19 19:00 | 09/19 19:00 | 08/21 16:00 |
| SLO | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| SMJ | 08/07 09:00 | 08/07 09:00 | |
| SR1 | 09/19 19:00 | 09/19 19:00 | |
| SU1 | 07/30 08:00 | ||
| SY1 | 09/19 19:00 | ||
| THM | 09/19 19:00 | 09/19 20:00 | |
| TKM | |||
| TN1 | 09/19 19:00 | 09/19 19:00 | |
| TN2 | 09/19 19:00 | 09/19 18:00 | 01/01 00:00 |
| TN3 | 09/19 19:00 | 09/19 19:00 | 11/01 00:00 |
| TPCD | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| TRX | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| TX1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| UDA | |||
| UNR | |||
| UT1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| UTE | 09/19 19:00 | 06/01 01:00 | |
| UZB | 09/19 19:00 | 09/19 19:00 | |
| VA1 | 09/19 19:00 | 09/19 19:00 | |
| VG1 | 01/23 19:24 | ||
| VT1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| WI1 | 09/19 19:00 | 09/19 19:00 | 09/19 19:00 |
| WT1 | 09/19 19:00 | ||
| WV1 | |||
| WV2 | 09/19 19:00 | 09/19 04:00 |