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
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Red over 6 hrs old Gray Unknown status

August 11, 2020 10:53 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 08/11 09:00 08/11 09:00 02/25 09:00
AF1   08/11 10:00  
AIR      
AKC      
AL2 08/11 09:00 08/11 09:00 08/11 09:00
AL3      
AL4 08/11 08:00 08/11 08:00  
ALG   08/11 08:00  
AR1 08/11 09:00 08/11 09:00  
AZ2 08/11 09:00 08/11 09:00 08/11 09:00
AZ3 08/11 09:00 08/11 09:00 08/11 09:00
AZ4 08/11 09:00 08/11 09:00 08/11 09:00
BAA   08/11 08:00  
BC1 08/11 09:00 08/11 09:00 04/07 15:00
BC2 08/11 09:00 08/11 09:00 08/11 09:00
BI1   08/11 09:00  
BIH   08/11 10:00  
BK1      
BLW 08/11 09:00 04/01 01:00  
BPT 09/11 14:00 01/13 13:00 04/14 18:00
CA1 08/11 09:00 08/11 09:00 08/27 03:00
CA2 08/11 09:00 08/11 09:00  
CA3 08/11 09:00 08/11 09:00 08/11 09:00
CA4 08/11 09:00 08/11 09:00  
CA5 08/11 09:00 08/11 09:00 08/11 09:00
CA6 08/11 09:00 08/11 09:00 08/11 09:00
CA8 08/11 09:00 08/11 10:00 08/11 09:00
CA9 08/11 09:00 08/11 09:00 08/11 09:00
CAT 08/11 08:00 08/11 09:00  
CHD   08/11 08:00  
CHO 11/29 13:00    
CI1   08/11 09:00  
CMB   08/11 10:00  
CN1 08/11 09:00 08/11 09:00  
CN3 08/11 09:00 08/11 09:00 08/11 09:00
CN4 02/01 10:00 01/21 14:00  
CO1 08/11 09:00 08/11 09:00 08/11 09:00
CO4      
CRI   08/11 09:00  
CT1 08/11 09:00 08/11 09:00 08/11 09:00
CUR 08/11 08:00 08/11 08:00  
DC1 08/11 09:00 08/11 10:52 04/23 12:00
DE1 08/11 09:00 08/11 09:00  
DN1      
DRN   08/11 09:00  
DUS   08/11 09:00  
EP1      
EPA   08/21 12:00  
FL1 08/11 09:00 08/11 09:00 08/11 09:00
FL2 08/11 09:00 08/11 09:00 08/04 10:00
FL3 08/11 09:00 08/11 09:00 08/11 09:00
FL4 08/11 09:00 08/11 09:00 08/11 09:00
FS1 08/11 09:00 08/11 10:00 08/05 04:00
GAB   03/27 03:00  
GBU 08/11 09:00 08/11 10:00 08/11 09:00
GH1   08/11 09:00  
GN1   08/10 04:00  
GOL      
GT1   08/11 09:00  
HC1   08/11 09:00  
HI1 08/11 09:00 08/11 09:00 08/11 09:00
IA2 08/11 09:00 08/11 09:00  
IA3 08/11 05:00 08/10 11:00  
ID1 08/11 09:00 08/11 10:00 08/11 09:00
IL1 08/11 09:00 08/11 09:00  
IN4 08/11 09:00 08/11 09:00 08/11 09:00
JDA   08/11 08:00  
JOR   08/07 02:00  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   08/11 08:00  
KM1 08/11 10:00 08/11 10:00  
KS1 08/11 09:00 08/11 09:00 08/11 09:00
KY1 08/11 09:00 08/11 09:00  
KY2 08/11 09:00 08/11 09:00 08/11 09:00
KZ1   08/11 09:00  
LA1 08/11 09:00 08/11 09:00 02/01 00:00
LAO   07/13 06:00  
LC1      
MA1 08/11 09:00 08/11 09:00  
MAD   08/11 09:00  
MD1 08/11 09:00 08/11 09:00 08/11 09:00
ME1 08/11 09:00 08/11 09:00 08/11 07:00
MEN 08/11 09:00 08/11 09:00 08/11 09:00
ML1   08/11 09:00  
MLD   10/01 14:00  
MM1 08/11 09:00 08/11 09:00  
MMR 08/11 10:00 08/11 10:00  
MO1 08/11 09:00 08/11 09:00 08/11 09:00
MOE      
MON 08/11 08:00 08/11 08:00 08/11 08:00
MT1 08/11 09:00 08/11 09:00 08/11 09:00
MY1   03/03 14:00  
NC1 08/11 09:00 08/11 09:00 08/11 09:00
NC2 08/11 09:00 08/11 09:00 08/11 09:00
NCA 08/11 09:00 08/11 09:00 08/11 09:00
NE2 08/11 09:00 08/11 09:00 08/11 09:00
NEA   08/11 10:00  
NH1 08/11 09:00 08/11 09:00 08/11 09:00
NI1      
NI2      
NJ1 08/11 09:00 08/11 09:00  
NL1 08/11 09:00 08/11 09:00  
NM2 08/11 09:00 08/11 09:00 08/11 09:00
NOS 08/11 09:00 08/11 09:00  
NPS 08/11 09:00 08/11 10:00  
NRB   12/31 18:26 12/31 18:26
NV2 08/11 09:00 08/11 09:00 08/11 09:00
NV3 08/11 09:00 08/11 09:00 08/11 09:00
OAP 08/11 10:00    
OAQ 08/11 09:00 08/11 09:00 08/11 09:00
OAR      
OD1   06/06 12:00  
OH1 08/11 09:00 08/11 09:00 08/11 09:00
OR1 08/11 09:00 08/11 09:00  
OR2 08/11 09:00 08/11 09:00  
PA3 08/11 09:00 08/11 09:00  
PIN      
PK1   08/11 09:00  
PK2   08/11 09:00  
PK3   08/11 09:00  
PK4   08/11 09:00  
RI1 08/11 09:00 08/11 09:00  
RIY   06/23 09:00  
SC1 08/11 09:00 08/11 09:00 08/11 09:00
SFN 03/05 07:00    
SHA 08/11 09:00 08/11 09:00  
SIC      
SIS 08/11 09:00 08/11 09:00  
SK1 08/11 09:00 08/11 09:00 08/21 16:00
SLO 08/11 09:00 08/11 09:00 08/11 09:00
SMJ 08/11 09:00   08/11 09:00
SR1 08/11 09:00   08/11 09:00
SU1   08/11 09:00  
SY1   08/11 09:00  
THM 08/11 09:00 08/11 09:00  
TKM      
TN1 08/11 09:00 08/11 09:00  
TN2 08/11 08:00 03/02 23:00 01/01 00:00
TN3 08/11 09:00 08/11 09:00 11/01 00:00
TPCD 08/11 09:00 08/11 09:00 08/11 09:00
TX1 08/11 08:00 08/11 08:00 08/11 08:00
UDA      
UNR      
UTE 08/11 09:00 06/01 01:00  
UZB 08/11 09:00 08/11 09:00  
VA1 08/11 09:00 08/11 09:00  
VG1   01/23 19:24  
VT1 08/11 09:00 08/11 09:00 08/11 09:00
WI1 08/11 09:00 08/11 09:00 08/11 09:00
WT1 08/11 09:00    
WV2 08/11 09:00 08/11 09:00