AQSQID: 011030011

Site Name: Decatur

Location: Decatur, AL

Reporting: True, Located: True

Current AQI: 23.0

Decatur AL, US: 34.5286, -86.9706

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 5.4 μg/m3 (23) 23.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 4.8 μg/m3 (20) 20.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 4.5 μg/m3 (19) 19.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 3.8 μg/m3 (16) 16.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 4.3 μg/m3 (18) 18.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 3.8 μg/m3 (16) 21.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -0.1 μg/m3 (0) 35.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -0.9 μg/m3 (0) 35.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 1.7 μg/m3 (7) 36.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 3.4 μg/m3 (14) 37.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 0.3 μg/m3 (1) 38.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 5.2 μg/m3 (22) 41.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A 5.5 μg/m3 (23) 42.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 1.7 μg/m3 (7) 41.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 3.4 μg/m3 (14) 40.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.7 μg/m3 (7) 38.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 3.9 μg/m3 (16) 36.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.7 μg/m3 (24) 36.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.2 μg/m3 (9) 35.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 4.1 μg/m3 (17) 34.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.8 μg/m3 (20) 31.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.6 μg/m3 (15) 30.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.6 μg/m3 (19) 30.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 5.2 μg/m3 (22) 31.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.8 μg/m3 (20) 32.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 3.6 μg/m3 (15) 32.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 5.2 μg/m3 (22) 29.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.8 μg/m3 (20) 32.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 3.4 μg/m3 (14) 34.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.4 μg/m3 (14) 28.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.6 μg/m3 (19) 23.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 1.2 μg/m3 (5) 39.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 1.3 μg/m3 (5) 40.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 0.8 μg/m3 (3) 40.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -0.8 μg/m3 (0) 39.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 1.0 μg/m3 (4) 40.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.7 μg/m3 (11) 38.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.7 μg/m3 (7) 38.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 5.5 μg/m3 (23) 33.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 9.4 μg/m3 (39) 39.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 9.6 μg/m3 (40) 40.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 0.5 μg/m3 (2) 14.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 0.5 μg/m3 (2) 12.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.2 μg/m3 (5) 21.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.4 μg/m3 (10) 29.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.1 μg/m3 (17) 25.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.6 μg/m3 (19) 28.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.8 μg/m3 (20) 26.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A -1.3 μg/m3 (0) 31.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -0.3 μg/m3 (0) 34.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.7 μg/m3 (7) 38.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.5 μg/m3 (6) 38.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 1.3 μg/m3 (5) 38.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.5 μg/m3 (23) 37.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 5.7 μg/m3 (24) 35.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.5 μg/m3 (27) 35.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.7 μg/m3 (11) 33.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.1 μg/m3 (17) 29.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.9 μg/m3 (16) 28.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A -0.1 μg/m3 (0) 27.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A -0.1 μg/m3 (0) 27.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.5 μg/m3 (6) 27.0
 
March 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A -0.4 μg/m3 (0) 15.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.3 μg/m3 (1) 1.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A -0.1 μg/m3 (0) 31.0
 
March 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A -0.1 μg/m3 (0) 32.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.2 μg/m3 (13) 32.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 4.1 μg/m3 (17) 32.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
March 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.5 μg/m3 (0) 33.0
 
March 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -0.6 μg/m3 (0) 34.0
 
March 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -0.8 μg/m3 (0) 35.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.8 μg/m3 (0) 35.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
March 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
March 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
March 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A -0.6 μg/m3 (0) 32.0
 
March 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.9 μg/m3 (8) 32.0
 
March 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.8 μg/m3 (20) 32.0
 
March 15, 2019, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.7 μg/m3 (7) 30.0
 
March 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
March 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.9 μg/m3 (16) 31.0
 
March 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 4.8 μg/m3 (20) 32.0
 
March 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
March 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
March 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
March 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.4 μg/m3 (27) 27.0
 
March 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 15, 2019, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.4 μg/m3 (10) 21.0
 
March 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
March 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 15.6 μg/m3 (58) 58.0
 
March 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 11.8 μg/m3 (49) 49.0
 
March 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 11.1 μg/m3 (46) 46.0
 
March 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 9.4 μg/m3 (39) 39.0
 
March 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 9.9 μg/m3 (41) 41.0
 
March 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 11.1 μg/m3 (46) 46.0
 
March 14, 2019, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 6.7 μg/m3 (28) 28.0
 
March 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 6.2 μg/m3 (26) 27.0
 
March 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 6.2 μg/m3 (26) 27.0
 
March 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
March 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.3 μg/m3 (59) 59.0
 
March 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 14.3 μg/m3 (55) 55.0
 
March 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 14.3 μg/m3 (55) 55.0
 
March 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
March 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 10.8 μg/m3 (45) 45.0
 
March 14, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 7.4 μg/m3 (31) 32.0
 
March 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 3.8 μg/m3 (16) 34.0
 
March 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
March 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.2 μg/m3 (9) 38.0
 
March 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 1.2 μg/m3 (5) 39.0
 
March 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 4.1 μg/m3 (17) 40.0
 
March 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 4.1 μg/m3 (17) 39.0
 
March 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 4.6 μg/m3 (19) 37.0
 
March 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.3 μg/m3 (22) 36.0
 
March 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.6 μg/m3 (19) 35.0
 
March 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
March 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
March 13, 2019, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.2 μg/m3 (9) 29.0
 
March 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 5.5 μg/m3 (23) 30.0
 
March 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 11.1 μg/m3 (46) 46.0
 
March 13, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
March 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
March 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.1 μg/m3 (17) 31.0
 
March 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.6 μg/m3 (15) 32.0
 
March 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 5.7 μg/m3 (24) 31.0
 
March 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
March 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
March 13, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.7 μg/m3 (11) 11.0
 
March 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -0.1 μg/m3 (0) N/A
March 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (17) 17.0
 
March 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (35) 35.0
 
March 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (37) 37.0
 
March 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
March 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (30) 30.0
 
March 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
March 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 5.5 μg/m3 (23) 29.0
 
March 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
March 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0