AQSQID: 180890015

Site Name: East Chicago Post Office

Location: E Chicago, IN

Reporting: True, Located: True

Current AQI: 4.0

E Chicago IN, US: 41.628611, -87.461389

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.34 ppb (4) N/A N/A 4.0
 
July 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.42 ppb (5) N/A N/A 5.0
 
July 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) N/A N/A 2.0
 
July 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.45 ppb (5) N/A N/A 5.0
 
July 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.55 ppb (6) N/A N/A 6.0
 
July 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 20, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 19, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A N/A 3.0
 
July 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.71 ppb (8) N/A N/A 8.0
 
July 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.84 ppb (9) N/A N/A 9.0
 
July 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.33 ppb (4) N/A N/A 4.0
 
July 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A N/A 3.0
 
July 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) N/A N/A 3.0
 
July 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.37 ppb (4) N/A N/A 4.0
 
July 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.34 ppb (4) N/A N/A 4.0
 
July 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A N/A 4.0
 
July 18, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.29 ppb (3) N/A N/A 3.0
 
July 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.47 ppb (5) N/A N/A 5.0
 
July 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (3) N/A N/A 3.0
 
July 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.41 ppb (5) N/A N/A 5.0
 
July 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (3) N/A N/A 3.0
 
July 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.34 ppb (4) N/A N/A 4.0
 
July 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.47 ppb (5) N/A N/A 5.0
 
July 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.83 ppb (9) N/A N/A 9.0
 
July 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.76 ppb (8) N/A N/A 8.0
 
July 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.75 ppb (8) N/A N/A 8.0
 
July 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.76 ppb (8) N/A N/A 8.0
 
July 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.51 ppb (6) N/A N/A 6.0
 
July 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.46 ppb (5) N/A N/A 5.0
 
July 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.45 ppb (5) N/A N/A 5.0
 
July 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A N/A 4.0
 
July 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (3) N/A N/A 3.0
 
July 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A N/A 3.0
 
July 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A N/A 3.0
 
July 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A N/A 3.0
 
July 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) N/A N/A 3.0
 
July 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.48 ppb (5) N/A N/A 5.0
 
July 17, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.36 ppb (4) N/A N/A 4.0
 
July 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.36 ppb (4) N/A N/A 4.0
 
July 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.32 ppb (4) N/A N/A 4.0
 
July 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.41 ppb (5) N/A N/A 5.0
 
July 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.49 ppb (5) N/A N/A 5.0
 
July 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
July 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
July 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A N/A 3.0
 
July 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 16, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
July 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A N/A 2.0
 
July 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.12 ppb (1) N/A N/A 1.0
 
July 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A N/A 2.0
 
July 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
July 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 16, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.12 ppb (1) N/A N/A 1.0
 
July 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.12 ppb (1) N/A N/A 1.0
 
July 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.12 ppb (1) N/A N/A 1.0
 
July 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.13 ppb (1) N/A N/A 1.0
 
July 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A N/A 2.0
 
July 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.15 ppb (2) N/A N/A 2.0
 
July 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.16 ppb (2) N/A N/A 2.0
 
July 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) N/A N/A 3.0
 
July 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (2) N/A N/A 2.0
 
July 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A N/A 2.0
 
July 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) N/A N/A 2.0
 
July 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) N/A N/A 2.0
 
July 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.26 ppb (3) N/A N/A 3.0
 
July 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A N/A 3.0
 
July 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (2) N/A N/A 2.0
 
July 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.47 ppb (5) N/A N/A 5.0
 
July 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.24 ppb (3) N/A N/A 3.0
 
July 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) N/A N/A 2.0
 
July 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.27 ppb (3) N/A N/A 3.0
 
July 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.37 ppb (4) N/A N/A 4.0
 
July 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.48 ppb (5) N/A N/A 5.0
 
July 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A N/A 6.0
 
July 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.34 ppb (4) N/A N/A 4.0
 
July 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.39 ppb (4) N/A N/A 4.0
 
July 14, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0
 
July 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (3) N/A N/A 3.0
 
July 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.57 ppb (6) N/A N/A 6.0
 
July 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A N/A 2.0
 
July 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A N/A 2.0
 
July 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (2) N/A N/A 2.0
 
July 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 14, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.35 ppb (4) N/A N/A 4.0
 
July 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A N/A 3.0