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
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A comprehensive list of EPA air pollution data sources

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

March 21, 2019 04:37 (ET) (All times are in ET)
Agency Ozone PM2.5 PM10
AB1 03/21 03:00 03/21 03:00 02/25 09:00
AF1   03/15 08:00  
AIR      
AL1 03/21 03:00 03/21 03:00 03/01 09:00
AL2 03/21 03:00 03/21 03:00 03/21 03:00
AL3      
AL4 03/21 03:00 03/21 03:00  
ALG   03/04 14:00  
AR1 03/21 03:00 03/21 03:00  
AZ2 03/21 03:00 03/21 03:00 03/21 03:00
AZ3 03/21 03:00 03/21 03:00 03/21 03:00
AZ4 03/21 03:00 03/21 03:00 03/21 03:00
BAA   03/21 02:00  
BC1 03/21 03:00 03/21 03:00 03/21 03:00
BC2 03/21 03:00 03/21 03:00 03/21 03:00
BI1   03/21 03:00  
BIH   03/21 03:00  
BK1      
BLW 03/21 03:00 04/01 01:00  
BPT 03/20 17:00 03/21 02:00 04/14 18:00
CA0 03/21 03:00 03/21 03:00 03/21 03:00
CA1 03/21 03:00 03/21 03:00 08/27 03:00
CA2 03/21 03:00 03/21 03:00  
CA3 03/21 03:00 03/21 03:00 03/21 03:00
CA4 03/21 03:00 03/21 03:00  
CA5 03/21 03:00 03/21 03:00 03/21 03:00
CA6 03/21 02:00 03/21 02:00 03/21 02:00
CA7 03/21 03:00 03/21 03:00 03/21 03:00
CA8 03/21 03:00 03/21 04:00 03/21 03:00
CA9 03/21 03:00 03/21 03:00 03/21 03:00
CAT 03/21 03:00 03/21 03:00  
CHO 03/08 13:00    
CK1 03/21 03:00 03/21 03:00 03/21 03:00
CMB   03/21 03:00  
CN1 03/21 03:00 03/21 03:00  
CN3 03/21 03:00 03/21 03:00 03/21 03:00
CN4 03/21 03:00 03/21 03:00  
CO1 03/21 02:00 03/21 02:00 03/21 02:00
CO4      
CT1 03/21 03:00 03/21 03:00 03/21 03:00
CUR 03/21 02:00 03/21 02:00  
DC1 03/21 03:00 03/21 04:35 03/20 09:00
DE1 03/21 03:00 03/21 03:00  
DN1      
DRN   03/20 19:00  
DUS      
EP1      
EPA   08/21 12:00  
FL1 03/21 03:00 03/21 03:00 03/20 23:00
FL2 03/21 03:00 03/21 03:00 09/29 15:00
FL3 03/21 03:00 03/21 03:00 03/21 03:00
FL4 03/21 03:00 03/21 03:00 03/21 03:00
FS1 03/21 03:00 03/21 04:00 08/05 04:00
GBU 03/21 03:00 03/21 03:00 03/21 03:00
GOL      
HC1   03/21 03:00  
HI1 03/21 03:00 03/21 03:00 03/21 03:00
IA1 03/21 03:00 03/21 03:00 03/21 03:00
IA2 03/21 03:00 03/21 03:00  
IA3 03/21 03:00 03/21 03:00  
ID1 03/21 02:00 03/21 04:00 03/21 03:00
IEG 03/21 04:00 03/21 04:00 03/21 04:00
IL1 03/21 03:00 03/21 03:00  
IN4 03/21 03:00 03/21 03:00 03/21 03:00
JDA   05/18 01:11  
JP1 12/30 02:00 12/30 02:00 12/30 02:00
KAZ   03/21 02:00  
KM1 03/21 04:00 03/21 04:00  
KS1 03/21 03:00 03/21 03:00 03/21 03:00
KY2 03/21 03:00 03/21 03:00 03/21 03:00
LA1 03/21 03:00 03/21 03:00 02/01 00:00
LC1      
MA1 03/21 03:00 03/21 03:00  
MD1 03/21 03:00 03/21 03:00  
ME1 03/21 03:00 03/21 03:00 03/21 03:00
MEN 03/21 03:00 03/21 03:00 03/20 14:00
MI1 03/21 03:00 03/21 03:00 03/21 03:00
MM1 03/21 03:00 03/21 03:00  
MMR   01/23 08:00  
MO1 03/21 03:00 03/21 03:00 03/21 03:00
MOE      
MON 03/21 02:00 03/21 03:00 03/21 02:00
MS1 03/21 03:00 03/21 03:00  
MT1 03/21 03:00 03/21 03:00 03/21 03:00
NC2 03/21 03:00 03/21 03:00  
NCA 03/21 03:00 03/21 03:00 03/21 03:00
NE1      
NE2 03/21 03:00 03/21 03:00 03/21 03:00
NE4 03/21 03:00 03/21 03:00  
NEA      
NH1 03/21 03:00 03/21 03:00 03/21 03:00
NJ1 03/21 03:00 03/21 03:00  
NL1 03/21 03:00 03/21 03:00  
NM2 03/21 03:00 03/21 03:00 03/21 03:00
NOS 03/21 02:00 03/21 03:00  
NPS 03/21 03:00 03/21 04:00  
NRB   03/21 03:48 03/21 03:48
NV2 03/21 03:00 03/21 03:00 03/21 03:00
NV3 03/21 03:00 03/21 03:00 03/21 03:00
NY1 02/04 11:00 02/04 11:00 02/04 11:00
OAP 03/21 04:00    
OAQ 03/21 03:00 03/21 03:00 03/21 03:00
OAR      
OH1 03/21 03:00 03/21 03:00 03/21 03:00
OK1 03/21 03:00 03/21 03:00 03/21 03:00
OR1 03/21 03:00 03/21 03:00  
OR2 10/01 17:00 03/21 03:00  
PA1 03/21 03:00 03/21 03:00 06/30 23:00
PA3 03/21 03:00 03/21 03:00  
PIN      
PR1 03/15 10:00 03/21 03:00 03/21 03:00
RI1 03/21 02:00 03/21 02:00  
RIY      
SC1 03/21 03:00 03/21 03:00 03/21 03:00
SD1 03/21 03:00 03/21 03:00 03/21 03:00
SFN 03/05 07:00    
SHA 03/21 03:00 03/21 03:00  
SIC      
SIS 03/21 03:00 03/21 03:00  
SK1 03/21 03:00 03/21 03:00 08/21 16:00
SLO 03/21 03:00 03/21 03:00 03/21 03:00
SMJ 08/07 09:00   08/07 09:00
SR1 03/21 03:00   03/21 03:00
SY1   03/21 03:00  
THM 01/22 12:00 01/22 12:00  
TN1 03/21 03:00 03/21 03:00  
TN2 03/21 03:00 03/21 02:00 01/01 00:00
TN3 03/21 03:00 03/21 03:00 11/01 00:00
TN4 03/21 03:00 03/21 03:00  
TPCD 03/21 03:00 03/21 03:00 03/21 03:00
TRX 03/21 03:00 03/21 03:00 03/21 03:00
TX1 03/21 03:00 03/21 03:00 03/21 03:00
UDA      
UNR      
UT1 03/21 03:00 03/21 03:00 03/21 03:00
UTE 03/21 03:00 06/01 01:00  
UZB 03/21 03:00 03/21 03:00  
VA1 03/21 03:00 03/21 03:00  
VG1   01/23 19:24  
VT1 03/21 03:00 03/21 03:00 03/21 03:00
WI1 03/21 03:00 03/21 03:00 03/21 03:00
WT1 03/21 03:00    
WV1      
WV2 03/20 20:00 03/20 20:00