AQSQID: 400019009

Site Name: Stilwell Castnet & Ncore

Location: Adair Co, OK

Reporting: True, Located: True

Current AQI: 39.0

Adair Co OK, US: 35.750599, -94.669701

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 26, 2019, 7 p.m. N/A N/A 3.4 ppb (3) N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.13 ppb (1) 14.0 μg/m3 (13) N/A 39.0
 
March 26, 2019, 6 p.m. N/A N/A 3.4 ppb (3) N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.07 ppb (1) 15.0 μg/m3 (14) N/A 39.0
 
March 26, 2019, 5 p.m. N/A N/A 3.6 ppb (3) N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (9) N/A 9.0
 
March 26, 2019, 4 p.m. N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.03 ppb (0) 10.0 μg/m3 (9) N/A 34.0
 
March 26, 2019, 3 p.m. N/A N/A 4.5 ppb (4) N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.06 ppb (1) 13.0 μg/m3 (12) N/A 31.0
 
March 26, 2019, 2 p.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) 14.0 μg/m3 (13) N/A 18.0
 
March 26, 2019, 1 p.m. N/A N/A 7.1 ppb (7) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.33 ppb (4) 18.0 μg/m3 (16) N/A 16.0
 
March 26, 2019, noon N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.41 ppb (5) 12.0 μg/m3 (11) N/A 11.0
 
March 26, 2019, 11 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.31 ppb (3) 12.0 μg/m3 (11) 8.0 μg/m3 (33) 33.0
 
March 26, 2019, 10 a.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.32 ppb (4) 11.0 μg/m3 (10) 9.9 μg/m3 (41) 41.0
 
March 26, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.13 ppb (1) 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
March 26, 2019, 8 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 10.0 μg/m3 (9) 8.9 μg/m3 (37) 37.0
 
March 26, 2019, 7 a.m. N/A N/A 3.7 ppb (3) N/A N/A N/A 30.0 ppb (23) N/A 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
March 26, 2019, 6 a.m. N/A N/A 3.7 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.08 ppb (1) 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
March 26, 2019, 5 a.m. N/A N/A 3.6 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.26 ppb (3) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
March 26, 2019, 4 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.28 ppb (3) 21.0 μg/m3 (19) 11.8 μg/m3 (49) 49.0
 
March 26, 2019, 3 a.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.28 ppb (3) 23.0 μg/m3 (21) 14.9 μg/m3 (56) 56.0
 
March 26, 2019, 2 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.28 ppb (3) 17.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
March 26, 2019, 1 a.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.19 ppb (2) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 26, 2019, midnight N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.15 ppb (2) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 25, 2019, 11 p.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) 13.0 μg/m3 (12) 7.0 μg/m3 (29) 29.0
 
March 25, 2019, 10 p.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 15.0 μg/m3 (14) 6.1 μg/m3 (25) 29.0
 
March 25, 2019, 9 p.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.06 ppb (1) 9.0 μg/m3 (8) 4.1 μg/m3 (17) 28.0
 
March 25, 2019, 8 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.04 ppb (0) 10.0 μg/m3 (9) 3.1 μg/m3 (13) 28.0
 
March 25, 2019, 7 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.03 ppb (0) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 28.0
 
March 25, 2019, 6 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.08 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 29.0
 
March 25, 2019, 5 p.m. N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.01 ppb (0) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
March 25, 2019, 4 p.m. N/A N/A 3.6 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.06 ppb (1) 14.0 μg/m3 (13) 5.9 μg/m3 (25) 25.0
 
March 25, 2019, 3 p.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) 16.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
March 25, 2019, 2 p.m. N/A N/A 3.3 ppb (3) N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.06 ppb (1) 13.0 μg/m3 (12) 8.0 μg/m3 (33) 33.0
 
March 25, 2019, 1 p.m. N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.11 ppb (1) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 25.0
 
March 25, 2019, noon N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
March 25, 2019, 11 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 25, 2019, 10 a.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.13 ppb (1) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 25, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
March 25, 2019, 8 a.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.08 ppb (1) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
March 25, 2019, 7 a.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 31.0 ppb (24) N/A 13.0 μg/m3 (12) 6.1 μg/m3 (25) 25.0
 
March 25, 2019, 6 a.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.04 ppb (0) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
March 25, 2019, 5 a.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.09 ppb (1) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
March 25, 2019, 4 a.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.09 ppb (1) 10.0 μg/m3 (9) 10.9 μg/m3 (45) 45.0
 
March 25, 2019, 3 a.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.1 ppb (1) 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
March 25, 2019, 2 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.06 ppb (1) 19.0 μg/m3 (17) 12.9 μg/m3 (52) 52.0
 
March 25, 2019, 1 a.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.24 ppb (3) 8.0 μg/m3 (7) 10.2 μg/m3 (42) 42.0
 
March 25, 2019, midnight N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 41.0 ppb (32) 0.23 ppb (3) 20.0 μg/m3 (18) 8.1 μg/m3 (34) 34.0
 
March 24, 2019, 11 p.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.2 ppb (2) 22.0 μg/m3 (20) 6.1 μg/m3 (25) 34.0
 
March 24, 2019, 10 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.14 ppb (2) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 33.0
 
March 24, 2019, 9 p.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 16.0 μg/m3 (15) 7.0 μg/m3 (29) 33.0
 
March 24, 2019, 8 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A 16.0 μg/m3 (15) 6.1 μg/m3 (25) 32.0
 
March 24, 2019, 7 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A 16.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
March 24, 2019, 6 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.02 ppb (0) 20.0 μg/m3 (18) 19.6 μg/m3 (66) 66.0
 
March 24, 2019, 5 p.m. N/A N/A 2.3 ppb (2) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.0 ppb (0) 28.0 μg/m3 (25) 14.3 μg/m3 (55) 55.0
 
March 24, 2019, 4 p.m. N/A N/A 2.2 ppb (2) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.05 ppb (1) 23.0 μg/m3 (21) 10.2 μg/m3 (42) 42.0
 
March 24, 2019, 3 p.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.06 ppb (1) 16.0 μg/m3 (15) 11.9 μg/m3 (50) 50.0
 
March 24, 2019, 2 p.m. N/A N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.07 ppb (1) 26.0 μg/m3 (24) 13.9 μg/m3 (54) 54.0
 
March 24, 2019, 1 p.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.2 ppb (2) 19.0 μg/m3 (17) 13.1 μg/m3 (52) 52.0
 
March 24, 2019, noon N/A N/A 1.8 ppb (2) N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.24 ppb (3) 20.0 μg/m3 (18) 9.2 μg/m3 (38) 38.0
 
March 24, 2019, 11 a.m. N/A N/A 1.8 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.24 ppb (3) 14.0 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 10 a.m. N/A N/A 1.6 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.23 ppb (3) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.24 ppb (3) 10.0 μg/m3 (9) 14.8 μg/m3 (56) 56.0
 
March 24, 2019, 8 a.m. N/A N/A 2.2 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.24 ppb (3) 16.0 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
March 24, 2019, 7 a.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 45.0 ppb (35) N/A 16.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
March 24, 2019, 6 a.m. N/A N/A 2.3 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.21 ppb (2) 21.0 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
March 24, 2019, 5 a.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) N/A 0.18 ppb (2) 17.0 μg/m3 (15) 10.9 μg/m3 (45) 45.0
 
March 24, 2019, 4 a.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) N/A 0.15 ppb (2) 17.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
March 24, 2019, 3 a.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.19 ppb (2) 17.0 μg/m3 (15) 8.1 μg/m3 (34) 36.0
 
March 24, 2019, 2 a.m. N/A N/A 2.5 ppb (2) N/A N/A 2.0 ppb (3) 46.0 ppb (35) 0.2 ppb (2) 19.0 μg/m3 (17) 7.1 μg/m3 (30) 35.0
 
March 24, 2019, 1 a.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.1 ppb (1) 18.0 μg/m3 (16) 10.8 μg/m3 (45) 45.0
 
March 24, 2019, midnight N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.11 ppb (1) 17.0 μg/m3 (15) 16.7 μg/m3 (60) 60.0
 
March 23, 2019, 11 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.06 ppb (1) 16.0 μg/m3 (15) 9.4 μg/m3 (39) 39.0
 
March 23, 2019, 10 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.07 ppb (1) 15.0 μg/m3 (14) 10.9 μg/m3 (45) 45.0
 
March 23, 2019, 9 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.11 ppb (1) 15.0 μg/m3 (14) 10.1 μg/m3 (42) 42.0
 
March 23, 2019, 8 p.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.16 ppb (2) 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
March 23, 2019, 7 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.15 ppb (2) 16.0 μg/m3 (15) 7.2 μg/m3 (30) 35.0
 
March 23, 2019, 6 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.09 ppb (1) 18.0 μg/m3 (16) 8.9 μg/m3 (37) 37.0
 
March 23, 2019, 5 p.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.02 ppb (0) 20.0 μg/m3 (18) 6.2 μg/m3 (26) 36.0
 
March 23, 2019, 4 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 49.0 ppb (38) N/A 20.0 μg/m3 (18) 6.0 μg/m3 (25) 38.0
 
March 23, 2019, 3 p.m. N/A N/A 2.4 ppb (2) N/A N/A 2.0 ppb (3) 49.0 ppb (38) N/A 15.0 μg/m3 (14) 8.9 μg/m3 (37) 38.0
 
March 23, 2019, 2 p.m. N/A N/A 2.3 ppb (2) N/A N/A 1.0 ppb (1) 48.0 ppb (37) 0.02 ppb (0) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 37.0
 
March 23, 2019, 1 p.m. N/A N/A 2.3 ppb (2) N/A N/A 2.0 ppb (3) 48.0 ppb (37) 0.0 ppb (0) 18.0 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
March 23, 2019, noon N/A N/A 2.2 ppb (2) N/A N/A 2.0 ppb (3) 49.0 ppb (38) 0.03 ppb (0) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 11 a.m. N/A N/A 2.1 ppb (2) N/A N/A 2.0 ppb (3) 48.0 ppb (37) 0.04 ppb (0) 18.0 μg/m3 (16) 13.8 μg/m3 (54) 54.0
 
March 23, 2019, 10 a.m. N/A N/A 1.9 ppb (2) N/A N/A 2.0 ppb (3) 48.0 ppb (37) 0.04 ppb (0) 24.0 μg/m3 (22) 9.3 μg/m3 (39) 39.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A 20.0 μg/m3 (18) 18.5 μg/m3 (64) 64.0
 
March 23, 2019, 8 a.m. N/A N/A 3.3 ppb (3) N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A 27.0 μg/m3 (25) 16.2 μg/m3 (59) 59.0
 
March 23, 2019, 7 a.m. N/A N/A 3.1 ppb (3) N/A N/A N/A 43.0 ppb (33) N/A 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
March 23, 2019, 6 a.m. N/A N/A 3.6 ppb (3) N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.05 ppb (1) 27.0 μg/m3 (25) 20.7 μg/m3 (69) 69.0
 
March 23, 2019, 5 a.m. N/A N/A 5.3 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.21 ppb (2) 34.0 μg/m3 (31) 24.8 μg/m3 (77) 77.0
 
March 23, 2019, 4 a.m. N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) 34.0 μg/m3 (31) 28.8 μg/m3 (86) 86.0
 
March 23, 2019, 3 a.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) 38.0 μg/m3 (35) 23.3 μg/m3 (74) 74.0
 
March 23, 2019, 2 a.m. N/A N/A 6.1 ppb (6) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 33.0 μg/m3 (30) 22.1 μg/m3 (71) 71.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A N/A 35.0
 
March 23, 2019, midnight N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.24 ppb (3) 21.0 μg/m3 (19) 5.1 μg/m3 (21) 40.0
 
March 22, 2019, 11 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.17 ppb (2) 14.0 μg/m3 (13) 2.2 μg/m3 (9) 42.0
 
March 22, 2019, 10 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.13 ppb (1) 10.0 μg/m3 (9) 0.1 μg/m3 (0) 42.0
 
March 22, 2019, 9 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.06 ppb (1) 7.0 μg/m3 (6) -1.9 μg/m3 (0) 42.0
 
March 22, 2019, 8 p.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.04 ppb (0) 6.0 μg/m3 (5) -1.1 μg/m3 (0) 40.0
 
March 22, 2019, 7 p.m. N/A N/A 3.3 ppb (3) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.05 ppb (1) 6.0 μg/m3 (5) -0.1 μg/m3 (0) 41.0
 
March 22, 2019, 6 p.m. N/A N/A 3.4 ppb (3) N/A N/A 1.0 ppb (1) 52.0 ppb (40) 0.08 ppb (1) 15.0 μg/m3 (14) 1.9 μg/m3 (8) 40.0
 
March 22, 2019, 5 p.m. N/A N/A 3.6 ppb (3) N/A N/A 1.0 ppb (1) 52.0 ppb (40) N/A 16.0 μg/m3 (15) 3.9 μg/m3 (16) 40.0
 
March 22, 2019, 4 p.m. N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A 18.0 μg/m3 (16) 4.0 μg/m3 (17) 38.0
 
March 22, 2019, 3 p.m. N/A N/A 4.1 ppb (4) N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A 19.0 μg/m3 (17) 5.9 μg/m3 (25) 34.0
 
March 22, 2019, 2 p.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 27.0 ppb (21) N/A 21.0 μg/m3 (19) 7.9 μg/m3 (33) 33.0
 
March 22, 2019, 1 p.m. N/A N/A 4.4 ppb (4) N/A N/A -1.0 ppb (0) 18.0 ppb (14) 0.27 ppb (3) 19.0 μg/m3 (17) 10.9 μg/m3 (45) 45.0
 
March 22, 2019, noon N/A N/A 4.4 ppb (4) N/A N/A -1.0 ppb (0) 12.0 ppb (9) 0.32 ppb (4) 18.0 μg/m3 (16) 7.2 μg/m3 (30) 30.0
 
March 22, 2019, 11 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.3 ppb (3) 20.0 μg/m3 (18) 11.8 μg/m3 (49) 49.0
 
March 22, 2019, 10 a.m. N/A N/A 3.7 ppb (3) N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.27 ppb (3) 18.0 μg/m3 (16) 10.1 μg/m3 (42) 42.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) 21.0 μg/m3 (19) 9.1 μg/m3 (38) 38.0
 
March 22, 2019, 8 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.08 ppb (1) 20.0 μg/m3 (18) 11.9 μg/m3 (50) 50.0
 
March 22, 2019, 7 a.m. N/A N/A 4.4 ppb (4) N/A N/A N/A 23.0 ppb (18) N/A 23.0 μg/m3 (21) 10.1 μg/m3 (42) 42.0
 
March 22, 2019, 6 a.m. N/A N/A 4.7 ppb (4) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.06 ppb (1) 23.0 μg/m3 (21) 11.9 μg/m3 (50) 50.0
 
March 22, 2019, 5 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) 23.0 μg/m3 (21) 13.9 μg/m3 (54) 54.0
 
March 22, 2019, 4 a.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) 28.0 μg/m3 (25) 9.3 μg/m3 (39) 39.0
 
March 22, 2019, 3 a.m. N/A N/A 5.6 ppb (5) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) 21.0 μg/m3 (19) 16.6 μg/m3 (60) 60.0
 
March 22, 2019, 2 a.m. N/A N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.14 ppb (2) 26.0 μg/m3 (24) 15.1 μg/m3 (57) 57.0
 
March 22, 2019, 1 a.m. N/A N/A 3.7 ppb (3) N/A N/A 1.0 ppb (1) 56.0 ppb (43) 0.17 ppb (2) 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
March 22, 2019, midnight N/A N/A 2.9 ppb (3) N/A N/A 1.0 ppb (1) 58.0 ppb (45) 0.11 ppb (1) 26.0 μg/m3 (24) 0.8 μg/m3 (3) 45.0
 
March 21, 2019, 11 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.02 ppb (0) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 41.0
 
March 21, 2019, 10 p.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A 9.0 μg/m3 (8) 1.9 μg/m3 (8) 39.0
 
March 21, 2019, 9 p.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 50.0 ppb (38) 0.1 ppb (1) 6.0 μg/m3 (5) 3.9 μg/m3 (16) 38.0
 
March 21, 2019, 8 p.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 50.0 ppb (38) 0.12 ppb (1) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 38.0
 
March 21, 2019, 7 p.m. N/A N/A 2.8 ppb (3) N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.12 ppb (1) 8.0 μg/m3 (7) N/A 38.0
 
March 21, 2019, 6 p.m. N/A N/A 3.0 ppb (3) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.1 ppb (1) N/A N/A 36.0
 
March 21, 2019, 5 p.m. N/A N/A 3.2 ppb (3) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.06 ppb (1) N/A N/A 35.0
 
March 21, 2019, 4 p.m. N/A N/A 3.5 ppb (3) N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.09 ppb (1) 10.0 μg/m3 (9) 4.9 μg/m3 (20) 34.0
 
March 21, 2019, 3 p.m. N/A N/A 3.7 ppb (3) N/A N/A 1.0 ppb (1) 41.0 ppb (32) 0.13 ppb (1) 13.0 μg/m3 (12) 6.9 μg/m3 (29) 32.0
 
March 21, 2019, 2 p.m. N/A N/A 3.7 ppb (3) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) 15.0 μg/m3 (14) 5.1 μg/m3 (21) 27.0
 
March 21, 2019, 1 p.m. N/A N/A 3.3 ppb (3) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.25 ppb (3) 16.0 μg/m3 (15) 6.9 μg/m3 (29) 29.0
 
March 21, 2019, noon N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.31 ppb (3) 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 11 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.36 ppb (4) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 10 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.29 ppb (3) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) 10.0 μg/m3 (9) 6.1 μg/m3 (25) 25.0
 
March 21, 2019, 8 a.m. N/A N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) 12.0 ppb (9) 0.03 ppb (0) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 7 a.m. N/A N/A 3.2 ppb (3) N/A N/A N/A 13.0 ppb (10) N/A 10.0 μg/m3 (9) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 6 a.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.03 ppb (0) 13.0 μg/m3 (12) 11.8 μg/m3 (49) 49.0
 
March 21, 2019, 5 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.18 ppb (2) 16.0 μg/m3 (15) 8.2 μg/m3 (34) 34.0
 
March 21, 2019, 4 a.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) 15.0 μg/m3 (14) 10.9 μg/m3 (45) 45.0
 
March 21, 2019, 3 a.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 15.0 μg/m3 (14) 8.2 μg/m3 (34) 34.0
 
March 21, 2019, 2 a.m. N/A N/A 2.2 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) 19.0 μg/m3 (17) 1.4 μg/m3 (6) 28.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A N/A 34.0
 
March 21, 2019, midnight N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.25 ppb (3) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 38.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
March 20, 2019, 9 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.01 ppb (0) 8.0 μg/m3 (7) 3.9 μg/m3 (16) 37.0
 
March 20, 2019, 8 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) 14.0 μg/m3 (13) 7.8 μg/m3 (32) 37.0
 
March 20, 2019, 7 p.m. N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.03 ppb (0) 15.0 μg/m3 (14) 7.1 μg/m3 (30) 35.0
 
March 20, 2019, 6 p.m. N/A N/A 3.2 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.07 ppb (1) 13.0 μg/m3 (12) 10.8 μg/m3 (45) 45.0
 
March 20, 2019, 5 p.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 20.0 μg/m3 (18) 8.2 μg/m3 (34) 34.0
 
March 20, 2019, 4 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) 15.0 μg/m3 (14) 6.1 μg/m3 (25) 26.0
 
March 20, 2019, 3 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 28.0
 
March 20, 2019, 2 p.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
March 20, 2019, 1 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.22 ppb (2) 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 20, 2019, noon N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) 11.0 μg/m3 (10) 8.1 μg/m3 (34) 34.0
 
March 20, 2019, 11 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) 14.0 μg/m3 (13) 24.2 μg/m3 (76) 76.0
 
March 20, 2019, 10 a.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.27 ppb (3) 34.0 μg/m3 (31) 27.9 μg/m3 (84) 84.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.09 ppb (1) 40.0 μg/m3 (36) 30.9 μg/m3 (90) 90.0
 
March 20, 2019, 8 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.07 ppb (1) 44.0 μg/m3 (40) 42.4 μg/m3 (117) 117.0
 
March 20, 2019, 7 a.m. N/A N/A 4.2 ppb (4) N/A N/A N/A 45.0 ppb (35) N/A 49.0 μg/m3 (45) 35.4 μg/m3 (100) 100.0
 
March 20, 2019, 6 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.09 ppb (1) 47.0 μg/m3 (43) 33.1 μg/m3 (95) 95.0
 
March 20, 2019, 5 a.m. N/A N/A 3.9 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) 49.0 μg/m3 (45) N/A 45.0
 
March 20, 2019, 4 a.m. N/A N/A 4.8 ppb (4) N/A N/A 0.0 ppb (0) N/A 0.22 ppb (2) 39.0 μg/m3 (35) 78.1 μg/m3 (162) 162.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
March 20, 2019, midnight N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 56.0 ppb (43) 0.34 ppb (4) 42.0 μg/m3 (38) 17.8 μg/m3 (62) 62.0
 
March 19, 2019, 11 p.m. N/A N/A 3.2 ppb (3) N/A N/A 1.0 ppb (1) 58.0 ppb (45) 0.23 ppb (3) 32.0 μg/m3 (29) 16.1 μg/m3 (59) 59.0
 
March 19, 2019, 10 p.m. N/A N/A 3.1 ppb (3) N/A N/A 1.0 ppb (1) 59.0 ppb (45) 0.18 ppb (2) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A N/A 46.0
 
March 19, 2019, 8 p.m. N/A N/A 3.0 ppb (3) N/A N/A 1.0 ppb (1) 57.0 ppb (44) 0.2 ppb (2) 28.0 μg/m3 (25) 6.7 μg/m3 (28) 44.0