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 August 13, 2018, 15:20 (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

October 21, 2018 05:18 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 10/21 03:00 10/21 03:00 02/25 09:00
AIR      
AL1 10/21 03:00 10/21 03:00 03/01 09:00
AL2 10/21 04:00 10/21 04:00 10/21 04:00
AL3      
AL4 10/21 03:00 10/21 03:00  
ALG   04/04 07:00  
AR1 10/21 03:00 10/21 03:00  
AZ2 10/21 04:00 10/21 04:00 10/21 04:00
AZ3 10/21 04:00 10/21 04:00 10/21 04:00
AZ4 10/21 04:00 01/01 01:00 10/21 04:00
BAA   07/20 07:00  
BC1 10/21 03:00 10/21 03:00 10/21 03:00
BC2 10/21 04:00 10/21 04:00 10/21 04:00
BIH   10/21 04:00  
BK1      
BLW 10/21 03:00 04/01 01:00  
BPT 10/21 04:00 10/10 09:00 04/14 18:00
CA0 10/21 04:00 10/21 04:00 10/21 04:00
CA1 10/21 04:00 10/21 04:00 08/27 03:00
CA3 10/21 04:00 10/21 04:00 10/21 04:00
CA4 10/21 04:00 10/21 04:00  
CA5 10/21 04:00 10/21 04:00 10/21 04:00
CA6 10/21 03:00 10/21 03:00 10/21 03:00
CA7 10/21 04:00 10/21 04:00 10/21 04:00
CA8 10/21 04:00 10/21 04:00 10/21 04:00
CA9 10/21 04:00 10/21 04:00 10/21 04:00
CAT 10/21 04:00 10/21 04:00  
CHO 10/21 04:00    
CK1 10/21 04:00 10/21 04:00 10/20 07:00
CMB   10/18 01:00  
CN1 10/21 03:00 10/21 03:00  
CN3 10/19 14:00 10/19 14:00 10/19 14:00
CN4 10/21 03:00 10/21 03:00  
CO1 10/21 04:00 10/21 04:00 10/21 04:00
CO4      
CT1 10/21 05:16 10/21 04:00 10/21 04:00
CUR 10/21 03:00 10/21 03:00  
DC1 10/21 04:00 10/21 05:17 10/21 04:00
DE1 10/21 04:00 10/21 04:00  
DN1      
DRN   04/24 01:00  
EP1      
EPA   08/21 12:00  
FL1 10/21 04:00 10/21 04:00 10/21 04:00
FL3 10/21 03:00 10/21 03:00 10/21 03:00
FL4 10/21 04:00 10/21 04:00 10/21 04:00
FS1   10/21 04:00 08/05 04:00
GBU 10/21 04:00 10/21 04:00 10/21 04:00
GOL      
HC1   10/18 00:00  
HI1 10/21 03:00 10/21 03:00 10/21 03:00
IA1 10/21 04:00 10/21 04:00 10/21 04:00
IA2 10/21 04:00 10/21 04:00  
IA3 10/20 07:00 10/20 07:00  
ID1 10/21 04:00 10/21 05:00 10/21 04:00
IEG 10/21 04:00 10/21 04:00 10/21 04:00
IL1 10/21 04:00 10/21 04:00  
IN4 10/21 04:00 10/21 04:00 10/21 04:00
IRQ      
JDA   05/18 01:11  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   10/19 23:00  
KM1 10/18 01:00 10/18 01:00  
KS1 10/21 04:00 10/21 04:00 10/21 04:00
KY1 10/20 18:00 10/20 18:00  
KY2 10/21 04:00 10/21 04:00 10/21 04:00
LA1 10/21 04:00 10/21 04:00 09/01 00:00
LC1      
MA1 10/21 03:00 10/21 03:00  
ME1 10/21 03:00 10/21 03:00 08/27 17:00
MEN 10/21 04:00 10/21 04:00 10/21 04:00
MI1 10/21 04:00 10/21 04:00 10/21 04:00
MM1 10/21 04:00 10/21 04:00  
MO1 10/21 04:00 10/21 04:00 10/21 04:00
MOE      
MON 10/20 01:00 10/20 02:00 10/20 01:00
MS1 10/21 04:00 10/21 04:00  
MT1 10/21 04:00 10/21 04:00 10/21 04:00
NC1 10/21 04:00 10/21 04:00 10/21 04:00
NC2 10/21 04:00 10/21 04:00  
NC3 10/21 04:00 10/21 04:00 04/25 08:00
NCA 10/21 04:00 10/18 19:00 10/21 04:00
NE1     10/21 04:00
NE2 10/21 04:00 10/21 04:00 10/21 04:00
NE4 10/21 04:00 10/21 04:00  
NH1 10/21 04:00 10/21 04:00 10/21 04:00
NJ1 10/21 03:00 10/21 03:00  
NL1 10/21 03:00 10/21 03:00  
NM2 10/21 04:00 10/21 04:00 10/21 04:00
NOS 10/21 03:00 10/21 04:00  
NPS 10/21 03:00 10/21 04:00  
NRB   10/21 04:14 10/21 04:14
NV2 10/21 04:00 10/21 04:00 10/21 04:00
NV3 10/21 04:00 10/21 04:00 10/21 04:00
NY1 10/21 03:00 10/21 03:00 03/30 12:00
OAP 10/21 04:00    
OAQ 10/21 04:00 10/21 04:00 10/21 04:00
OAR      
OH1 10/21 04:00 10/21 04:00 10/21 04:00
OK1 10/20 00:00 10/20 00:00 10/20 00:00
OR1 10/21 04:00 10/21 04:00  
OR2 10/01 17:00 10/21 04:00  
PA1 10/21 04:00 10/21 04:00 12/31 23:00
PA3 10/21 04:00 10/21 04:00  
PIN      
PR1 10/21 03:00 10/21 04:00 10/21 03:00
RI1 10/21 04:00 10/21 04:00  
RIY      
SC1 10/21 04:00 10/21 04:00 10/21 04:00
SD1 10/21 04:00 10/21 04:00 10/21 04:00
SFN 03/05 07:00    
SHA 10/21 04:00 10/21 04:00  
SIC      
SIS 10/21 04:00 10/21 04:00  
SK1 10/21 04:00 10/21 04:00 08/21 16:00
SLO 10/21 04:00 10/21 04:00 10/21 04:00
SMJ 08/07 09:00   08/07 09:00
SR1 10/21 03:00   10/21 02:00
SY1   10/21 04:00  
THM 10/21 05:00 10/21 05:00  
TN1 10/21 03:00 10/21 03:00  
TN2 10/21 04:00 10/21 03:00 07/01 00:00
TN3 10/21 03:00 10/21 03:00  
TN4 10/21 03:00 10/21 03:00  
TPCD 10/21 03:00 10/21 03:00 10/21 03:00
TRX 10/21 04:00 10/21 04:00 10/21 04:00
TX1 10/21 04:00 10/21 04:00 10/21 04:00
UDA      
UNR      
UT1 10/21 04:00 10/21 04:00 10/21 04:00
UTE 10/21 04:00 06/01 01:00  
UZB   10/21 03:00  
VA1 10/21 04:00 10/21 04:00  
VG1   09/13 06:49  
VT1 10/21 04:00 10/21 04:00 10/21 04:00
WI1 10/21 04:00 10/21 04:00 10/21 04:00
WT1 10/21 04:00    
WV1      
WV2 10/20 20:00 10/20 04:00