Notice regarding new AirNow sites

Dear AirNow-Tech users,

Due to a large number of new international sites coming into AirNow and the increasing possibility of duplicate 9 digit site ID’s, we have prepended the 3 digit country code (840 for the U.S.) to all new sites coming into the system as of June 2018. If your agency is adding new sites, a 12 digit site code in your site list is the expected behavior.

Sites that existed prior to June 2018 had back-end adjustments made to ensure they are kept separate from international sites with the same 9 digit code.

Please send any questions or concerns to AirNowInfo@sonomatech.com.

Thank you, AirNow Data Management Center

Posted April 3, 2020, 09:10 (PT)

AirNow-Tech is a password-protected website for air quality data management analysis, and decision support. AirNow-Tech is primarily used by the federal, State, Tribal, and local air quality organizations that provide data and forecasts to the AirNow system, as well as researchers and other air data users. It allows users to:

  • Access monitoring site data, information, and polling status
  • Analyze current and past air quality events and episodes
  • Submit and analyze air quality forecasts
  • Configure EnviroFlash email services for public dissemination of air quality forecasts
  • 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
Register for an AirNow-Tech Account

A comprehensive list of EPA air pollution data sources

Register with AirNow API for an automatic feed of AirNow air quality data

Color Legend
Green Current Yellow 2 to 6 hrs old
Red over 6 hrs old Gray Unknown status

June 06, 2020 09:42 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 06/06 08:00 06/06 08:00 02/25 09:00
AF1   06/06 09:00  
AIR      
AKC      
AL2 06/05 17:00 06/05 17:00 06/05 17:00
AL3      
AL4 06/06 08:00 06/06 08:00  
ALG   06/06 07:00  
AR1 06/06 08:00 06/06 08:00  
AZ2 06/06 08:00 06/06 08:00 06/06 08:00
AZ3 06/06 08:00 06/06 08:00 06/06 08:00
AZ4 06/06 08:00 06/06 08:00 06/06 08:00
BAA   03/03 14:00  
BC1 06/06 08:00 06/06 08:00 04/07 15:00
BC2 06/06 08:00 06/06 08:00 06/06 08:00
BI1   06/06 08:00  
BIH   06/06 09:00  
BK1      
BLW 06/06 08:00 04/01 01:00  
BPT 09/11 14:00 01/13 13:00 04/14 18:00
CA1 06/06 08:00 06/06 08:00 08/27 03:00
CA2 06/06 08:00 06/06 08:00  
CA3 06/06 08:00 06/06 08:00 06/06 08:00
CA4 06/06 08:00 06/06 08:00  
CA5 06/06 08:00 06/06 08:00 06/06 08:00
CA6 06/06 08:00 06/06 08:00 06/06 08:00
CA8 06/06 08:00 06/06 09:00 06/06 08:00
CA9 06/06 08:00 06/06 08:00 06/06 08:00
CAT 06/06 08:00 06/06 08:00  
CHD   06/06 07:00  
CHO 11/29 13:00    
CI1   06/06 08:00  
CMB   06/06 08:00  
CN1 06/06 08:00 06/06 08:00  
CN3 06/06 08:00 06/06 08:00 06/06 08:00
CN4 06/06 08:00 06/06 08:00  
CO1 06/06 08:00 06/06 08:00 06/06 08:00
CO4      
CRI   06/06 08:00  
CT1 06/06 08:00 06/06 08:00 06/06 08:00
CUR 06/06 07:00 06/06 07:00  
DC1 06/06 08:00 06/06 09:41 06/01 12:00
DE1 06/06 08:00 06/06 08:00  
DN1      
DRN   06/06 08:00  
DUS   06/06 08:00  
EP1      
EPA   08/21 12:00  
FL1 06/06 07:00 06/06 07:00 06/06 07:00
FL2 06/06 08:00 06/06 08:00 06/06 07:00
FL3 06/06 08:00 06/06 08:00 06/06 08:00
FL4 06/06 08:00 06/06 08:00 06/06 08:00
FS1 06/06 08:00 06/06 08:00 08/05 04:00
GAB   03/27 03:00  
GBU 06/06 08:00 06/06 08:00 06/06 08:00
GH1   06/06 08:00  
GN1   06/06 08:00  
GOL      
GT1   06/06 08:00  
HC1   06/06 08:00  
HI1 06/06 08:00 06/06 08:00 06/06 08:00
IA2 06/06 08:00 06/06 08:00  
IA3 06/06 08:00 06/06 08:00  
ID1 06/06 08:00 06/06 09:00 06/06 08:00
IL1 06/06 08:00 06/06 08:00  
IN4 06/06 08:00 06/06 08:00 06/06 08:00
JOR   06/06 08:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   06/06 07:00  
KM1 06/06 09:00 06/06 09:00  
KS1 06/06 08:00 06/06 08:00 06/06 08:00
KY1 06/06 08:00 06/06 08:00  
KY2 06/06 08:00 06/06 08:00 06/06 08:00
KZ1   06/02 08:00  
LA1 06/06 08:00 06/06 08:00 02/01 00:00
LAO   06/06 08:00  
LC1      
MA1 06/06 08:00 06/06 08:00  
MAD   06/06 08:00  
MD1 06/05 19:00 06/05 19:00 06/05 19:00
ME1 06/06 08:00 06/06 08:00 06/06 08:00
MEN 06/02 12:00 06/02 12:00 06/02 12:00
ML1   06/06 08:00  
MLD   10/01 14:00  
MM1 06/06 08:00 06/06 08:00  
MMR 06/06 09:00 06/06 09:00  
MO1 06/06 08:00 06/06 08:00 06/06 08:00
MOE      
MON 06/06 07:00 06/06 07:00 06/06 07:00
MT1 06/06 08:00 06/06 08:00 06/06 08:00
MY1   03/03 14:00  
NC2 06/06 08:00 06/06 08:00 06/06 08:00
NCA 06/06 08:00 06/06 08:00 06/06 08:00
NE2 06/06 08:00 06/06 08:00 06/06 08:00
NEA   06/06 09:00  
NH1 06/06 08:00 06/06 08:00 06/06 08:00
NI1      
NI2      
NJ1 06/06 08:00 06/06 08:00  
NL1 06/06 08:00 06/06 08:00  
NM2 06/06 08:00 06/06 08:00 06/06 08:00
NOS 05/31 14:00 06/06 08:00  
NPS 06/06 08:00 06/06 09:00  
NRB   12/31 18:26 12/31 18:26
NV2 06/06 08:00 06/06 08:00 06/06 08:00
NV3 06/06 08:00 06/06 08:00 06/06 08:00
OAP 06/06 09:00    
OAQ 06/06 08:00 06/06 08:00 06/06 08:00
OAR      
OD1   06/06 12:00  
OH1 06/06 08:00 06/06 08:00 06/06 08:00
OK1 06/06 08:00 06/06 08:00 06/06 08:00
OR1 06/06 08:00 06/06 08:00  
OR2 06/06 08:00 06/06 08:00  
PA3 06/06 08:00 06/06 08:00  
PIN      
PK1   06/06 08:00  
PK2   06/06 08:00  
PK3   06/06 08:00  
PK4   06/06 08:00  
RI1 06/06 08:00 06/06 08:00  
RIY   05/16 00:00  
SC1 06/06 08:00 06/06 08:00 06/06 08:00
SFN 03/05 07:00    
SHA 06/06 08:00 06/06 08:00  
SIC      
SIS 06/06 08:00 06/06 08:00  
SK1 06/06 08:00 06/06 08:00 08/21 16:00
SLO 06/06 08:00 06/06 08:00 06/06 08:00
SMJ 06/06 08:00   06/06 08:00
SR1 06/06 08:00   06/06 08:00
SU1   06/06 08:00  
SY1   06/06 08:00  
THM 06/06 08:00 06/06 08:00  
TKM      
TN1 06/06 08:00 06/06 08:00  
TN2 06/06 07:00 03/02 23:00 01/01 00:00
TN3 06/06 08:00 06/06 08:00 11/01 00:00
TPCD 06/06 08:00 06/06 08:00 06/06 08:00
TX1 06/06 08:00 06/06 08:00 06/06 08:00
UDA      
UNR      
UT1 06/06 08:00 06/06 08:00 06/06 08:00
UTE 06/06 08:00 06/01 01:00  
UZB 06/06 08:00 06/06 08:00  
VA1 06/06 08:00 06/06 08:00  
VG1   01/23 19:24  
VT1 06/06 08:00 06/06 08:00 06/06 08:00
WI1 06/06 08:00 06/06 08:00 06/06 08:00
WT1 06/06 08:00    
WV2 06/06 08:00 06/06 04:00