ID: 909

AQSQID: 550270001

Site Name: Horicon Wildlife Area

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 27, 2021, 1:31 p.m.

Location: Horicon (N Palmatory St), WI

Reporting: True, Located: True

Current AQI: 28.0

Horicon (N Palmatory St) WI, US: 43.46611, -88.621109

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 27, 2021, noon N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.16 ppb (3) 5.1 μg/m3 (5) 3.4 μg/m3 (15) 28.0
 
Jan. 27, 2021, 11 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 5.7 μg/m3 (6) 3.8 μg/m3 (16) 28.0
 
Jan. 27, 2021, 10 a.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) N/A N/A 7.1 μg/m3 (7) 4.3 μg/m3 (18) 18.0
 
Jan. 27, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A 7.2 μg/m3 (7) 4.5 μg/m3 (19) 27.0
 
Jan. 27, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) 7.2 μg/m3 (7) 4.9 μg/m3 (21) 27.0
 
Jan. 27, 2021, 7 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A N/A 27.0 ppb (25) 0.17 ppb (3) 8.0 μg/m3 (8) 5.2 μg/m3 (22) 25.0
 
Jan. 27, 2021, 6 a.m. N/A 0.0 ppb (0) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 7.9 μg/m3 (8) 5.0 μg/m3 (21) 24.0
 
Jan. 27, 2021, 5 a.m. N/A 0.0 ppb (0) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 8.4 μg/m3 (8) 5.5 μg/m3 (23) 26.0
 
Jan. 27, 2021, 4 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 8.3 μg/m3 (8) 5.3 μg/m3 (23) 28.0
 
Jan. 27, 2021, 3 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.18 ppb (3) 7.4 μg/m3 (7) 4.7 μg/m3 (20) 28.0
 
Jan. 27, 2021, 2 a.m. N/A 0.2 ppb (1) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.17 ppb (3) 6.0 μg/m3 (6) 4.0 μg/m3 (17) 28.0
 
Jan. 27, 2021, 1 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 4.5 μg/m3 (5) 3.2 μg/m3 (14) 29.0
 
Jan. 27, 2021, midnight N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 4.4 μg/m3 (5) 3.0 μg/m3 (13) 30.0
 
Jan. 26, 2021, 11 p.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 4.7 μg/m3 (5) 3.0 μg/m3 (13) 32.0
 
Jan. 26, 2021, 10 p.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.16 ppb (3) 6.6 μg/m3 (7) 4.3 μg/m3 (18) 33.0
 
Jan. 26, 2021, 9 p.m. N/A 0.2 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.16 ppb (3) 7.1 μg/m3 (7) 4.5 μg/m3 (19) 33.0
 
Jan. 26, 2021, 8 p.m. N/A 0.4 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 6.7 μg/m3 (7) 4.3 μg/m3 (18) 33.0
 
Jan. 26, 2021, 7 p.m. N/A 0.4 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.16 ppb (3) 6.5 μg/m3 (7) 4.1 μg/m3 (18) 34.0
 
Jan. 26, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 7.5 μg/m3 (7) 4.1 μg/m3 (18) 33.0
 
Jan. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 7.7 μg/m3 (8) 3.9 μg/m3 (17) 33.0
 
Jan. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 7.0 μg/m3 (7) 3.9 μg/m3 (17) 33.0
 
Jan. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 6.8 μg/m3 (7) 3.7 μg/m3 (16) 33.0
 
Jan. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 6.9 μg/m3 (7) 3.4 μg/m3 (15) 33.0
 
Jan. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 10.4 μg/m3 (10) 3.2 μg/m3 (14) 32.0
 
Jan. 26, 2021, noon N/A -0.1 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 13.2 μg/m3 (13) 3.0 μg/m3 (13) 32.0
 
Jan. 26, 2021, 11 a.m. N/A -0.1 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.16 ppb (3) 27.0 μg/m3 (25) 3.2 μg/m3 (14) 32.0
 
Jan. 26, 2021, 10 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) N/A N/A 25.2 μg/m3 (24) 3.4 μg/m3 (15) 24.0
 
Jan. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A 25.4 μg/m3 (24) 3.2 μg/m3 (14) 34.0
 
Jan. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.16 ppb (3) 13.4 μg/m3 (13) 2.4 μg/m3 (10) 34.0
 
Jan. 26, 2021, 7 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) N/A N/A N/A 36.0 ppb (34) 0.17 ppb (3) 9.2 μg/m3 (9) 2.5 μg/m3 (11) 34.0
 
Jan. 26, 2021, 6 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 10.9 μg/m3 (11) 2.9 μg/m3 (13) 33.0
 
Jan. 26, 2021, 5 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) 3.9 μg/m3 (4) 2.9 μg/m3 (13) 36.0
 
Jan. 26, 2021, 4 a.m. N/A -0.1 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.17 ppb (3) 4.5 μg/m3 (5) 2.6 μg/m3 (11) 38.0
 
Jan. 26, 2021, 3 a.m. N/A -0.1 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) 5.8 μg/m3 (6) 3.6 μg/m3 (16) 34.0
 
Jan. 26, 2021, 2 a.m. N/A -0.1 ppb (0) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.18 ppb (3) 6.7 μg/m3 (7) 4.2 μg/m3 (18) 32.0
 
Jan. 26, 2021, 1 a.m. N/A -0.1 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.18 ppb (3) 7.1 μg/m3 (7) 4.6 μg/m3 (20) 32.0
 
Jan. 26, 2021, midnight N/A -0.1 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) 7.2 μg/m3 (7) 4.3 μg/m3 (18) 34.0
 
Jan. 25, 2021, 11 p.m. N/A -0.1 ppb (0) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) 7.7 μg/m3 (8) 4.5 μg/m3 (19) 34.0
 
Jan. 25, 2021, 10 p.m. N/A 0.1 ppb (1) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 10.3 μg/m3 (10) 4.7 μg/m3 (20) 33.0
 
Jan. 25, 2021, 9 p.m. N/A 0.4 ppb (1) 3.1 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.17 ppb (3) 8.9 μg/m3 (9) 4.6 μg/m3 (20) 34.0
 
Jan. 25, 2021, 8 p.m. N/A 1.1 ppb (2) 4.9 ppb (5) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.18 ppb (3) 10.1 μg/m3 (10) 5.0 μg/m3 (21) 34.0
 
Jan. 25, 2021, 7 p.m. N/A 2.2 ppb (3) 6.8 ppb (7) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) 11.9 μg/m3 (12) 6.2 μg/m3 (26) 33.0
 
Jan. 25, 2021, 6 p.m. N/A 1.9 ppb (2) 5.7 ppb (6) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) 11.6 μg/m3 (11) 6.4 μg/m3 (27) 33.0
 
Jan. 25, 2021, 5 p.m. N/A 2.8 ppb (3) 7.7 ppb (8) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) 11.8 μg/m3 (11) 7.3 μg/m3 (31) 32.0
 
Jan. 25, 2021, 4 p.m. N/A 3.0 ppb (3) 8.4 ppb (8) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.2 ppb (3) 11.2 μg/m3 (11) 8.0 μg/m3 (34) 34.0
 
Jan. 25, 2021, 3 p.m. N/A 1.7 ppb (2) 6.5 ppb (7) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.19 ppb (3) 11.2 μg/m3 (11) 8.0 μg/m3 (34) 34.0
 
Jan. 25, 2021, 2 p.m. N/A 1.0 ppb (1) 7.2 ppb (7) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) 13.6 μg/m3 (13) 10.9 μg/m3 (46) 46.0
 
Jan. 25, 2021, 1 p.m. N/A 0.2 ppb (1) 7.6 ppb (8) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.22 ppb (3) 22.6 μg/m3 (21) 19.7 μg/m3 (67) 67.0
 
Jan. 25, 2021, noon N/A 0.0 ppb (0) 5.8 ppb (6) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.21 ppb (3) 21.8 μg/m3 (21) 18.9 μg/m3 (66) 66.0
 
Jan. 25, 2021, 11 a.m. N/A 0.0 ppb (0) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.21 ppb (3) 20.6 μg/m3 (20) 18.0 μg/m3 (64) 64.0
 
Jan. 25, 2021, 10 a.m. N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A N/A 22.6 μg/m3 (21) 19.3 μg/m3 (67) 67.0
 
Jan. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A 20.4 μg/m3 (19) 17.1 μg/m3 (62) 62.0
 
Jan. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.21 ppb (3) 18.7 μg/m3 (18) 16.5 μg/m3 (61) 61.0
 
Jan. 25, 2021, 7 a.m. N/A 0.0 ppb (0) 4.8 ppb (5) N/A N/A N/A 27.0 ppb (25) 0.22 ppb (3) 17.1 μg/m3 (16) 15.1 μg/m3 (58) 58.0
 
Jan. 25, 2021, 6 a.m. N/A 0.0 ppb (0) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.23 ppb (3) 15.9 μg/m3 (15) 14.0 μg/m3 (55) 55.0
 
Jan. 25, 2021, 5 a.m. N/A 0.0 ppb (0) 7.3 ppb (7) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.25 ppb (3) 26.0 μg/m3 (25) 22.5 μg/m3 (73) 73.0
 
Jan. 25, 2021, 4 a.m. N/A 0.3 ppb (1) 12.2 ppb (12) N/A N/A 0.0 ppb (0) 16.0 ppb (15) 0.4 ppb (5) 58.1 μg/m3 (53) 43.8 μg/m3 (122) 122.0
 
Jan. 25, 2021, 3 a.m. N/A 0.1 ppb (1) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.23 ppb (3) 24.4 μg/m3 (23) 22.2 μg/m3 (73) 73.0
 
Jan. 25, 2021, 2 a.m. N/A 1.7 ppb (2) 9.4 ppb (9) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.23 ppb (3) 23.4 μg/m3 (22) 21.5 μg/m3 (71) 71.0
 
Jan. 25, 2021, 1 a.m. N/A 0.2 ppb (1) 5.1 ppb (5) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.21 ppb (3) 20.5 μg/m3 (19) 18.6 μg/m3 (65) 65.0
 
Jan. 25, 2021, midnight N/A 0.0 ppb (0) 4.4 ppb (5) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.21 ppb (3) 19.8 μg/m3 (19) 18.0 μg/m3 (64) 64.0
 
Jan. 24, 2021, 11 p.m. N/A 0.0 ppb (0) 3.7 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 17.5 μg/m3 (17) 16.0 μg/m3 (60) 60.0
 
Jan. 24, 2021, 10 p.m. N/A 0.0 ppb (0) 3.7 ppb (4) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 17.8 μg/m3 (17) 15.9 μg/m3 (59) 59.0
 
Jan. 24, 2021, 9 p.m. N/A 0.2 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 18.1 μg/m3 (17) 15.8 μg/m3 (59) 59.0
 
Jan. 24, 2021, 8 p.m. N/A 0.3 ppb (1) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 17.4 μg/m3 (17) 15.4 μg/m3 (58) 58.0
 
Jan. 24, 2021, 7 p.m. N/A 0.8 ppb (1) 5.5 ppb (6) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.21 ppb (3) 19.3 μg/m3 (18) 16.8 μg/m3 (61) 61.0
 
Jan. 24, 2021, 6 p.m. N/A 1.2 ppb (2) 5.9 ppb (6) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.22 ppb (3) 18.1 μg/m3 (17) 16.3 μg/m3 (60) 60.0
 
Jan. 24, 2021, 5 p.m. N/A 1.7 ppb (2) 7.1 ppb (7) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.22 ppb (3) 17.9 μg/m3 (17) 15.8 μg/m3 (59) 59.0
 
Jan. 24, 2021, 4 p.m. N/A 2.0 ppb (2) 8.1 ppb (8) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.24 ppb (3) 17.2 μg/m3 (16) 14.6 μg/m3 (57) 57.0
 
Jan. 24, 2021, 3 p.m. N/A 1.4 ppb (2) 7.7 ppb (8) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.24 ppb (3) 15.1 μg/m3 (14) 13.2 μg/m3 (54) 54.0
 
Jan. 24, 2021, 2 p.m. N/A 0.7 ppb (1) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.23 ppb (3) 14.2 μg/m3 (14) 12.3 μg/m3 (52) 52.0
 
Jan. 24, 2021, 1 p.m. N/A 0.2 ppb (1) 7.1 ppb (7) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.23 ppb (3) 14.6 μg/m3 (14) 12.2 μg/m3 (52) 52.0
 
Jan. 24, 2021, noon N/A 0.0 ppb (0) 6.7 ppb (7) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 15.4 μg/m3 (15) 12.5 μg/m3 (52) 52.0
 
Jan. 24, 2021, 11 a.m. N/A 0.0 ppb (0) 6.3 ppb (6) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.23 ppb (3) 14.4 μg/m3 (14) 11.5 μg/m3 (48) 48.0
 
Jan. 24, 2021, 10 a.m. N/A 0.0 ppb (0) 8.2 ppb (8) N/A N/A 0.0 ppb (0) N/A N/A 16.0 μg/m3 (15) 13.5 μg/m3 (54) 54.0
 
Jan. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A 16.5 μg/m3 (16) 13.1 μg/m3 (54) 54.0
 
Jan. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.25 ppb (3) 16.2 μg/m3 (15) 11.9 μg/m3 (50) 50.0
 
Jan. 24, 2021, 7 a.m. N/A 0.1 ppb (1) 10.7 ppb (11) N/A N/A N/A 25.0 ppb (24) 0.27 ppb (4) 19.2 μg/m3 (18) 13.0 μg/m3 (53) 53.0
 
Jan. 24, 2021, 6 a.m. N/A 0.1 ppb (1) 10.8 ppb (11) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.27 ppb (4) 17.6 μg/m3 (17) 12.5 μg/m3 (52) 52.0
 
Jan. 24, 2021, 5 a.m. N/A 0.0 ppb (0) 9.1 ppb (9) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.26 ppb (4) 18.1 μg/m3 (17) 10.4 μg/m3 (44) 44.0
 
Jan. 24, 2021, 4 a.m. N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 17.1 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
Jan. 24, 2021, 3 a.m. N/A 0.0 ppb (0) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.27 ppb (4) 20.3 μg/m3 (19) 12.9 μg/m3 (53) 53.0
 
Jan. 24, 2021, 2 a.m. N/A 0.0 ppb (0) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.24 ppb (3) 17.0 μg/m3 (16) 11.3 μg/m3 (48) 48.0
 
Jan. 24, 2021, 1 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.25 ppb (3) 19.2 μg/m3 (18) 11.3 μg/m3 (48) 48.0
 
Jan. 24, 2021, midnight N/A 0.0 ppb (0) 6.1 ppb (6) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.24 ppb (3) 19.8 μg/m3 (19) 12.6 μg/m3 (53) 53.0
 
Jan. 23, 2021, 11 p.m. N/A 0.0 ppb (0) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 14.7 μg/m3 (14) 8.2 μg/m3 (35) 35.0
 
Jan. 23, 2021, 10 p.m. N/A 0.4 ppb (1) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.21 ppb (3) 13.1 μg/m3 (13) 7.5 μg/m3 (32) 35.0
 
Jan. 23, 2021, 9 p.m. N/A 0.8 ppb (1) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.2 ppb (3) 10.3 μg/m3 (10) 6.1 μg/m3 (26) 37.0
 
Jan. 23, 2021, 8 p.m. N/A 1.0 ppb (1) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.19 ppb (3) 11.0 μg/m3 (11) 6.0 μg/m3 (25) 37.0
 
Jan. 23, 2021, 7 p.m. N/A 1.3 ppb (2) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) 13.8 μg/m3 (13) 7.3 μg/m3 (31) 36.0
 
Jan. 23, 2021, 6 p.m. N/A 1.5 ppb (2) 5.3 ppb (5) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) 14.9 μg/m3 (14) 8.5 μg/m3 (36) 36.0
 
Jan. 23, 2021, 5 p.m. N/A 2.4 ppb (3) 7.0 ppb (7) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.2 ppb (3) 13.9 μg/m3 (13) 7.0 μg/m3 (30) 33.0
 
Jan. 23, 2021, 4 p.m. N/A 2.3 ppb (3) 7.3 ppb (7) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.22 ppb (3) 14.2 μg/m3 (14) 8.2 μg/m3 (35) 35.0
 
Jan. 23, 2021, 3 p.m. N/A 3.9 ppb (4) 11.0 ppb (11) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.27 ppb (4) 17.9 μg/m3 (17) 10.6 μg/m3 (45) 45.0
 
Jan. 23, 2021, 2 p.m. N/A 3.3 ppb (4) 12.1 ppb (12) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.32 ppb (4) 20.6 μg/m3 (20) 13.5 μg/m3 (54) 54.0
 
Jan. 23, 2021, 1 p.m. N/A 1.7 ppb (2) 16.5 ppb (16) N/A N/A 0.0 ppb (0) 14.0 ppb (13) 0.35 ppb (4) 22.8 μg/m3 (22) 15.9 μg/m3 (59) 59.0
 
Jan. 23, 2021, noon N/A 0.3 ppb (1) 9.8 ppb (10) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.33 ppb (4) 19.2 μg/m3 (18) 13.1 μg/m3 (54) 54.0
 
Jan. 23, 2021, 11 a.m. N/A 0.2 ppb (1) 13.0 ppb (13) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.3 ppb (4) 18.9 μg/m3 (18) 13.1 μg/m3 (54) 54.0
 
Jan. 23, 2021, 10 a.m. N/A 0.9 ppb (1) 16.4 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 16.3 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Jan. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A 15.6 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.23 ppb (3) 13.2 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
Jan. 23, 2021, 7 a.m. N/A 1.1 ppb (2) 9.0 ppb (9) N/A N/A N/A 25.0 ppb (24) 0.22 ppb (3) 11.7 μg/m3 (11) 7.2 μg/m3 (31) 31.0
 
Jan. 23, 2021, 6 a.m. N/A 0.7 ppb (1) 7.8 ppb (8) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.22 ppb (3) 12.1 μg/m3 (12) 7.1 μg/m3 (30) 30.0
 
Jan. 23, 2021, 5 a.m. N/A 3.0 ppb (3) 12.1 ppb (12) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 11.9 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 23, 2021, 4 a.m. N/A 1.6 ppb (2) 6.9 ppb (7) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.19 ppb (3) 11.2 μg/m3 (11) 5.8 μg/m3 (25) 29.0
 
Jan. 23, 2021, 3 a.m. N/A 1.7 ppb (2) 7.1 ppb (7) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.19 ppb (3) 10.2 μg/m3 (10) 5.3 μg/m3 (23) 29.0
 
Jan. 23, 2021, 2 a.m. N/A 1.7 ppb (2) 6.8 ppb (7) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.18 ppb (3) 11.2 μg/m3 (11) 4.6 μg/m3 (20) 30.0
 
Jan. 23, 2021, 1 a.m. N/A 0.9 ppb (1) 5.0 ppb (5) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.16 ppb (3) 9.1 μg/m3 (9) 3.5 μg/m3 (15) 31.0
 
Jan. 23, 2021, midnight N/A 0.3 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.16 ppb (3) 8.3 μg/m3 (8) 3.7 μg/m3 (16) 33.0
 
Jan. 22, 2021, 11 p.m. N/A 0.9 ppb (1) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.16 ppb (3) 8.2 μg/m3 (8) 3.4 μg/m3 (15) 33.0
 
Jan. 22, 2021, 10 p.m. N/A 0.2 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.15 ppb (2) 5.3 μg/m3 (5) 2.8 μg/m3 (12) 36.0
 
Jan. 22, 2021, 9 p.m. N/A 0.6 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.15 ppb (2) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 36.0
 
Jan. 22, 2021, 8 p.m. N/A 0.4 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) 5.5 μg/m3 (6) 3.2 μg/m3 (14) 36.0
 
Jan. 22, 2021, 7 p.m. N/A 0.3 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) 5.2 μg/m3 (5) 3.3 μg/m3 (14) 36.0
 
Jan. 22, 2021, 6 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.14 ppb (2) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 35.0
 
Jan. 22, 2021, 5 p.m. N/A 0.3 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.14 ppb (2) 5.5 μg/m3 (6) 3.1 μg/m3 (13) 34.0
 
Jan. 22, 2021, 4 p.m. N/A 0.3 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.14 ppb (2) 6.2 μg/m3 (6) 2.8 μg/m3 (12) 34.0
 
Jan. 22, 2021, 3 p.m. N/A 0.3 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.14 ppb (2) 5.2 μg/m3 (5) 2.8 μg/m3 (12) 33.0
 
Jan. 22, 2021, 2 p.m. N/A 0.2 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) 4.7 μg/m3 (5) 2.9 μg/m3 (13) 33.0
 
Jan. 22, 2021, 1 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) 5.2 μg/m3 (5) 3.1 μg/m3 (13) 32.0
 
Jan. 22, 2021, noon N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) 5.8 μg/m3 (6) 2.9 μg/m3 (13) 31.0
 
Jan. 22, 2021, 11 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) 5.3 μg/m3 (5) 2.8 μg/m3 (12) 31.0
 
Jan. 22, 2021, 10 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 5.4 μg/m3 (5) 3.0 μg/m3 (13) 13.0
 
Jan. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A 5.7 μg/m3 (6) 3.0 μg/m3 (13) 31.0
 
Jan. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) 6.3 μg/m3 (6) 3.0 μg/m3 (13) 30.0
 
Jan. 22, 2021, 7 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A N/A 33.0 ppb (31) 0.14 ppb (2) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 31.0
 
Jan. 22, 2021, 6 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.13 ppb (2) 8.4 μg/m3 (8) 3.3 μg/m3 (14) 30.0
 
Jan. 22, 2021, 5 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) 7.2 μg/m3 (7) 3.9 μg/m3 (17) 30.0
 
Jan. 22, 2021, 4 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) 7.6 μg/m3 (8) 3.8 μg/m3 (16) 29.0
 
Jan. 22, 2021, 3 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 8.8 μg/m3 (9) 3.8 μg/m3 (16) 30.0
 
Jan. 22, 2021, 2 a.m. N/A -0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 7.7 μg/m3 (8) 3.3 μg/m3 (14) 33.0
 
Jan. 22, 2021, 1 a.m. N/A 0.2 ppb (1) 2.1 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 7.0 μg/m3 (7) 4.2 μg/m3 (18) 33.0
 
Jan. 22, 2021, midnight N/A 0.4 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 6.9 μg/m3 (7) 3.7 μg/m3 (16) 33.0
 
Jan. 21, 2021, 11 p.m. N/A 0.3 ppb (1) 2.4 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 5.5 μg/m3 (6) 3.5 μg/m3 (15) 33.0
 
Jan. 21, 2021, 10 p.m. N/A 0.3 ppb (1) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.18 ppb (3) 6.6 μg/m3 (7) 3.7 μg/m3 (16) 34.0
 
Jan. 21, 2021, 9 p.m. N/A 0.3 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.17 ppb (3) 8.0 μg/m3 (8) 3.7 μg/m3 (16) 35.0
 
Jan. 21, 2021, 8 p.m. N/A 0.4 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) 7.1 μg/m3 (7) 3.4 μg/m3 (15) 36.0
 
Jan. 21, 2021, 7 p.m. N/A 1.4 ppb (2) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.17 ppb (3) 6.3 μg/m3 (6) 2.5 μg/m3 (11) 35.0
 
Jan. 21, 2021, 6 p.m. N/A 0.4 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.17 ppb (3) 5.1 μg/m3 (5) 2.0 μg/m3 (9) 36.0
 
Jan. 21, 2021, 5 p.m. N/A 0.6 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.17 ppb (3) 6.9 μg/m3 (7) 1.9 μg/m3 (8) 35.0
 
Jan. 21, 2021, 4 p.m. N/A 0.8 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) 7.3 μg/m3 (7) 1.9 μg/m3 (8) 33.0
 
Jan. 21, 2021, 3 p.m. N/A 1.3 ppb (2) 4.6 ppb (5) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 9.1 μg/m3 (9) 2.5 μg/m3 (11) 32.0
 
Jan. 21, 2021, 2 p.m. N/A 1.4 ppb (2) 7.2 ppb (7) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.21 ppb (3) 10.9 μg/m3 (11) 3.3 μg/m3 (14) 29.0
 
Jan. 21, 2021, 1 p.m. N/A 0.4 ppb (1) 6.3 ppb (6) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 9.9 μg/m3 (10) 2.4 μg/m3 (10) 29.0
 
Jan. 21, 2021, noon N/A 0.1 ppb (1) 4.8 ppb (5) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.19 ppb (3) 9.1 μg/m3 (9) 2.1 μg/m3 (9) 30.0
 
Jan. 21, 2021, 11 a.m. N/A 0.2 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 7.8 μg/m3 (8) 1.6 μg/m3 (7) 33.0
 
Jan. 21, 2021, 10 a.m. N/A 0.2 ppb (1) 2.9 ppb (3) N/A N/A 0.0 ppb (0) N/A N/A 8.8 μg/m3 (9) 2.1 μg/m3 (9) 9.0
 
Jan. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A 8.3 μg/m3 (8) 2.7 μg/m3 (12) 30.0
 
Jan. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 11.1 μg/m3 (11) 3.6 μg/m3 (16) 29.0
 
Jan. 21, 2021, 7 a.m. N/A 0.1 ppb (1) 3.1 ppb (3) N/A N/A N/A 31.0 ppb (29) 0.18 ppb (3) 11.3 μg/m3 (11) 4.7 μg/m3 (20) 29.0
 
Jan. 21, 2021, 6 a.m. N/A 0.1 ppb (1) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 12.5 μg/m3 (12) 6.0 μg/m3 (25) 28.0
 
Jan. 21, 2021, 5 a.m. N/A 0.1 ppb (1) 4.8 ppb (5) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.19 ppb (3) 12.6 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2021, 4 a.m. N/A 0.1 ppb (1) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 12.0 μg/m3 (12) 7.2 μg/m3 (31) 31.0
 
Jan. 21, 2021, 3 a.m. N/A 0.1 ppb (1) 4.3 ppb (5) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) 11.8 μg/m3 (11) 7.4 μg/m3 (31) 31.0
 
Jan. 21, 2021, 2 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.18 ppb (3) 11.5 μg/m3 (11) 7.7 μg/m3 (33) 33.0
 
Jan. 21, 2021, 1 a.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.18 ppb (3) 12.6 μg/m3 (12) 7.8 μg/m3 (33) 33.0
 
Jan. 21, 2021, midnight N/A 0.0 ppb (0) 4.7 ppb (5) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 11.7 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Jan. 20, 2021, 11 p.m. N/A 0.0 ppb (0) 6.5 ppb (7) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 14.1 μg/m3 (14) 8.4 μg/m3 (36) 36.0
 
Jan. 20, 2021, 10 p.m. N/A 0.3 ppb (1) 5.5 ppb (6) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 13.4 μg/m3 (13) 7.9 μg/m3 (33) 33.0
 
Jan. 20, 2021, 9 p.m. N/A 0.7 ppb (1) 4.3 ppb (5) N/A N/A N/A 37.0 ppb (35) 0.18 ppb (3) 12.5 μg/m3 (12) 7.5 μg/m3 (32) 35.0
 
Jan. 20, 2021, 8 p.m. N/A 1.0 ppb (1) 4.4 ppb (5) N/A N/A N/A 37.0 ppb (35) 0.17 ppb (3) 12.0 μg/m3 (12) 7.6 μg/m3 (32) 35.0
 
Jan. 20, 2021, 7 p.m. N/A 1.1 ppb (2) 4.2 ppb (4) N/A N/A N/A 38.0 ppb (36) 0.17 ppb (3) 12.0 μg/m3 (12) 7.1 μg/m3 (30) 36.0
 
Jan. 20, 2021, 6 p.m. N/A 1.0 ppb (1) 3.8 ppb (4) N/A N/A N/A N/A 0.17 ppb (3) 10.9 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
Jan. 20, 2021, 5 p.m. N/A 1.0 ppb (1) 4.4 ppb (5) N/A N/A N/A N/A 0.17 ppb (3) 10.5 μg/m3 (10) 7.3 μg/m3 (31) 31.0
 
Jan. 20, 2021, 4 p.m. N/A 1.3 ppb (2) 5.6 ppb (6) N/A N/A N/A N/A 0.18 ppb (3) 12.2 μg/m3 (12) 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2021, 3 p.m. N/A 1.4 ppb (2) 6.1 ppb (6) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.17 ppb (3) 11.5 μg/m3 (11) 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2021, 2 p.m. N/A 1.0 ppb (1) 6.0 ppb (6) N/A N/A 0.0 ppb (0) N/A N/A 10.3 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Jan. 20, 2021, 1 p.m. N/A 0.3 ppb (1) 7.5 ppb (8) N/A N/A 0.0 ppb (0) N/A N/A 10.4 μg/m3 (10) 7.2 μg/m3 (31) 31.0