ID: 909

AQSQID: 550270001

Site Name: Horicon Wildlife Area

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

Updated: April 21, 2021, 8:43 p.m.

Location: Horicon (N Palmatory St), WI

Reporting: True, Located: True

Current AQI: 41.0

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
April 21, 2021, 7 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.03 ppb (0) 6.9 μg/m3 (7) 4.3 μg/m3 (18) 41.0
 
April 21, 2021, 6 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.04 ppb (0) 4.9 μg/m3 (5) 3.4 μg/m3 (15) 40.0
 
April 21, 2021, 5 p.m. N/A 0.3 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.04 ppb (0) 4.5 μg/m3 (5) 3.3 μg/m3 (14) 37.0
 
April 21, 2021, 4 p.m. N/A 0.3 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.03 ppb (0) 5.2 μg/m3 (5) 2.7 μg/m3 (12) 36.0
 
April 21, 2021, 3 p.m. N/A -0.3 ppb (0) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 7.8 μg/m3 (8) 5.1 μg/m3 (22) 35.0
 
April 21, 2021, 2 p.m. N/A 2.6 ppb (3) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 7.8 μg/m3 (8) 5.2 μg/m3 (22) 35.0
 
April 21, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A N/A 3.0
 
April 21, 2021, noon N/A 0.7 ppb (1) 7.4 ppb (7) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.25 ppb (3) 10.4 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
April 21, 2021, 11 a.m. N/A 0.3 ppb (1) 5.8 ppb (6) N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.25 ppb (3) 10.3 μg/m3 (10) 6.6 μg/m3 (28) 28.0
 
April 21, 2021, 10 a.m. N/A 0.0 ppb (0) 3.7 ppb (4) N/A N/A 0.0 ppb (0) N/A N/A 10.7 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 25.0 ppb (24) N/A 10.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
April 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 10.3 μg/m3 (10) 5.9 μg/m3 (25) 27.0
 
April 21, 2021, 7 a.m. N/A 0.0 ppb (0) 3.6 ppb (4) N/A N/A N/A 31.0 ppb (29) 0.23 ppb (3) 10.3 μg/m3 (10) 5.7 μg/m3 (24) 29.0
 
April 21, 2021, 6 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.24 ppb (3) 10.0 μg/m3 (10) 5.9 μg/m3 (25) 30.0
 
April 21, 2021, 5 a.m. N/A 0.0 ppb (0) 4.4 ppb (5) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.24 ppb (3) 10.8 μg/m3 (10) 5.9 μg/m3 (25) 30.0
 
April 21, 2021, 4 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.24 ppb (3) 10.8 μg/m3 (10) 6.1 μg/m3 (26) 32.0
 
April 21, 2021, 3 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.22 ppb (3) 8.9 μg/m3 (9) 5.2 μg/m3 (22) 36.0
 
April 21, 2021, 2 a.m. N/A 0.0 ppb (0) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.21 ppb (3) 10.1 μg/m3 (10) 5.0 μg/m3 (21) 37.0
 
April 21, 2021, 1 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.2 ppb (3) 8.5 μg/m3 (8) 4.2 μg/m3 (18) 39.0
 
April 21, 2021, midnight N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.19 ppb (3) 8.1 μg/m3 (8) 3.8 μg/m3 (16) 41.0
 
April 20, 2021, 11 p.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.18 ppb (3) 7.6 μg/m3 (8) 3.7 μg/m3 (16) 42.0
 
April 20, 2021, 10 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.18 ppb (3) 7.7 μg/m3 (8) 3.6 μg/m3 (16) 42.0
 
April 20, 2021, 9 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 7.2 μg/m3 (7) 3.8 μg/m3 (16) 43.0
 
April 20, 2021, 8 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 7.7 μg/m3 (8) 3.8 μg/m3 (16) 43.0
 
April 20, 2021, 7 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 7.6 μg/m3 (8) 4.1 μg/m3 (18) 43.0
 
April 20, 2021, 6 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.18 ppb (3) 6.7 μg/m3 (7) 3.9 μg/m3 (17) 43.0
 
April 20, 2021, 5 p.m. N/A 0.3 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.25 ppb (3) 6.3 μg/m3 (6) 3.4 μg/m3 (15) 42.0
 
April 20, 2021, 4 p.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 6.4 μg/m3 (6) 3.6 μg/m3 (16) 42.0
 
April 20, 2021, 3 p.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.2 ppb (3) 6.1 μg/m3 (6) 3.3 μg/m3 (14) 40.0
 
April 20, 2021, 2 p.m. N/A 0.3 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A 6.8 μg/m3 (7) 3.5 μg/m3 (15) 39.0
 
April 20, 2021, 1 p.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A 4.4 μg/m3 (5) 3.0 μg/m3 (13) 35.0
 
April 20, 2021, noon N/A 0.2 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 29.0
 
April 20, 2021, 11 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.18 ppb (3) 4.2 μg/m3 (4) 2.8 μg/m3 (12) 30.0
 
April 20, 2021, 10 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 3.5 μg/m3 (4) 2.5 μg/m3 (11) 11.0
 
April 20, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A 3.4 μg/m3 (4) 2.4 μg/m3 (10) 27.0
 
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) 3.4 μg/m3 (4) 2.0 μg/m3 (9) 27.0
 
April 20, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 29.0 ppb (27) 0.19 ppb (3) 2.5 μg/m3 (3) 1.7 μg/m3 (8) 27.0
 
April 20, 2021, 6 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.19 ppb (3) 2.4 μg/m3 (3) 1.7 μg/m3 (8) 29.0
 
April 20, 2021, 5 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 2.4 μg/m3 (3) 1.7 μg/m3 (8) 32.0
 
April 20, 2021, 4 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) 3.3 μg/m3 (4) 1.6 μg/m3 (7) 34.0
 
April 20, 2021, 3 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) 2.5 μg/m3 (3) 1.4 μg/m3 (6) 34.0
 
April 20, 2021, 2 a.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 3.2 μg/m3 (3) 1.6 μg/m3 (7) 32.0
 
April 20, 2021, 1 a.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) 3.7 μg/m3 (4) 1.5 μg/m3 (7) 33.0
 
April 20, 2021, midnight N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.19 ppb (3) 3.3 μg/m3 (4) 1.5 μg/m3 (7) 35.0
 
April 19, 2021, 11 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 3.9 μg/m3 (4) 1.3 μg/m3 (6) 36.0
 
April 19, 2021, 10 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 3.1 μg/m3 (3) 1.4 μg/m3 (6) 36.0
 
April 19, 2021, 9 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 3.6 μg/m3 (4) 1.5 μg/m3 (7) 36.0
 
April 19, 2021, 8 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 3.1 μg/m3 (3) 1.6 μg/m3 (7) 36.0
 
April 19, 2021, 7 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) 3.3 μg/m3 (4) 1.8 μg/m3 (8) 34.0
 
April 19, 2021, 6 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.19 ppb (3) 3.0 μg/m3 (3) 1.7 μg/m3 (8) 34.0
 
April 19, 2021, 5 p.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) 3.4 μg/m3 (4) 1.6 μg/m3 (7) 32.0
 
April 19, 2021, 4 p.m. N/A 0.2 ppb (1) 0.6 ppb (1) N/A N/A N/A 31.0 ppb (29) 0.2 ppb (3) 2.1 μg/m3 (2) 1.3 μg/m3 (6) 29.0
 
April 19, 2021, 3 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 29.0 ppb (27) 0.2 ppb (3) 1.7 μg/m3 (2) 1.0 μg/m3 (5) 27.0
 
April 19, 2021, 2 p.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.2 ppb (3) 1.5 μg/m3 (2) 1.1 μg/m3 (5) 25.0
 
April 19, 2021, 1 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.2 ppb (3) 1.9 μg/m3 (2) 1.3 μg/m3 (6) 25.0
 
April 19, 2021, noon N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.21 ppb (3) 3.0 μg/m3 (3) 1.2 μg/m3 (5) 25.0
 
April 19, 2021, 11 a.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.2 ppb (3) 3.8 μg/m3 (4) 1.8 μg/m3 (8) 30.0
 
April 19, 2021, 10 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 4.2 μg/m3 (4) 2.6 μg/m3 (11) 11.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A 6.8 μg/m3 (7) 3.2 μg/m3 (14) 38.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.21 ppb (3) 15.3 μg/m3 (15) 7.1 μg/m3 (30) 38.0
 
April 19, 2021, 7 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A N/A 38.0 ppb (36) 0.21 ppb (3) 20.8 μg/m3 (20) 8.2 μg/m3 (35) 36.0
 
April 19, 2021, 6 a.m. N/A 0.1 ppb (1) 3.4 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.21 ppb (3) 20.8 μg/m3 (20) 8.5 μg/m3 (36) 37.0
 
April 19, 2021, 5 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.21 ppb (3) 20.5 μg/m3 (19) 8.7 μg/m3 (37) 40.0
 
April 19, 2021, 4 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.22 ppb (3) 19.1 μg/m3 (18) 8.4 μg/m3 (36) 41.0
 
April 19, 2021, 3 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.22 ppb (3) 17.2 μg/m3 (16) 7.8 μg/m3 (33) 40.0
 
April 19, 2021, 2 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.21 ppb (3) 12.5 μg/m3 (12) 5.6 μg/m3 (24) 40.0
 
April 19, 2021, 1 a.m. N/A 0.0 ppb (0) 3.8 ppb (4) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.22 ppb (3) 14.8 μg/m3 (14) 6.0 μg/m3 (25) 39.0
 
April 19, 2021, midnight N/A 0.0 ppb (0) 2.2 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 10.5 μg/m3 (10) 4.9 μg/m3 (21) 42.0
 
April 18, 2021, 11 p.m. N/A 0.1 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) 8.4 μg/m3 (8) 4.5 μg/m3 (19) 45.0
 
April 18, 2021, 10 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.2 ppb (3) 7.3 μg/m3 (7) 3.8 μg/m3 (16) 44.0
 
April 18, 2021, 9 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 6.8 μg/m3 (7) 3.4 μg/m3 (15) 44.0
 
April 18, 2021, 8 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 7.1 μg/m3 (7) 3.3 μg/m3 (14) 44.0
 
April 18, 2021, 7 p.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) 7.0 μg/m3 (7) 3.5 μg/m3 (15) 45.0
 
April 18, 2021, 6 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) 8.3 μg/m3 (8) 4.3 μg/m3 (18) 45.0
 
April 18, 2021, 5 p.m. N/A 0.2 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.22 ppb (3) 11.9 μg/m3 (12) 6.5 μg/m3 (28) 43.0
 
April 18, 2021, 4 p.m. N/A 0.7 ppb (1) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.26 ppb (4) 15.9 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
April 18, 2021, 3 p.m. N/A 0.7 ppb (1) 4.6 ppb (5) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.28 ppb (4) 17.9 μg/m3 (17) 11.5 μg/m3 (48) 48.0
 
April 18, 2021, 2 p.m. N/A 0.8 ppb (1) 4.7 ppb (5) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.28 ppb (4) 17.5 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
April 18, 2021, 1 p.m. N/A 0.7 ppb (1) 5.1 ppb (5) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.28 ppb (4) 16.9 μg/m3 (16) 11.8 μg/m3 (50) 50.0
 
April 18, 2021, noon N/A 0.2 ppb (1) 4.4 ppb (5) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.28 ppb (4) 15.9 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
April 18, 2021, 11 a.m. N/A 0.1 ppb (1) 3.9 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.26 ppb (4) 16.3 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
April 18, 2021, 10 a.m. N/A 0.1 ppb (1) 3.5 ppb (4) N/A N/A 0.0 ppb (0) N/A N/A 15.9 μg/m3 (15) 10.4 μg/m3 (44) 44.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A 15.2 μg/m3 (15) 10.2 μg/m3 (43) 43.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.25 ppb (3) 15.4 μg/m3 (15) 10.3 μg/m3 (43) 43.0
 
April 18, 2021, 7 a.m. N/A 0.1 ppb (1) 3.3 ppb (4) N/A N/A N/A 36.0 ppb (34) 0.25 ppb (3) 14.9 μg/m3 (14) 10.4 μg/m3 (44) 44.0
 
April 18, 2021, 6 a.m. N/A 0.1 ppb (1) 3.1 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.24 ppb (3) 14.2 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
April 18, 2021, 5 a.m. N/A 0.1 ppb (1) 3.4 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.24 ppb (3) 14.5 μg/m3 (14) 9.1 μg/m3 (38) 38.0
 
April 18, 2021, 4 a.m. N/A 0.1 ppb (1) 3.6 ppb (4) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.26 ppb (4) 14.6 μg/m3 (14) 9.9 μg/m3 (42) 42.0
 
April 18, 2021, 3 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.23 ppb (3) 12.5 μg/m3 (12) 7.4 μg/m3 (31) 36.0
 
April 18, 2021, 2 a.m. N/A 0.1 ppb (1) 3.0 ppb (3) N/A N/A 1.0 ppb (2) 39.0 ppb (37) 0.25 ppb (3) 16.9 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
April 18, 2021, 1 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A N/A 1.0 ppb (2) 46.0 ppb (43) 0.24 ppb (3) 14.1 μg/m3 (14) 9.4 μg/m3 (40) 43.0
 
April 18, 2021, midnight N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.21 ppb (3) 10.5 μg/m3 (10) 6.1 μg/m3 (26) 46.0
 
April 17, 2021, 11 p.m. N/A 0.0 ppb (0) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.2 ppb (3) 9.7 μg/m3 (9) 5.5 μg/m3 (23) 50.0
 
April 17, 2021, 10 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.18 ppb (3) 8.6 μg/m3 (8) 4.5 μg/m3 (19) 49.0
 
April 17, 2021, 9 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 54.0 ppb (50) 0.17 ppb (3) 7.1 μg/m3 (7) 3.9 μg/m3 (17) 50.0
 
April 17, 2021, 8 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 54.0 ppb (50) 0.18 ppb (3) 7.6 μg/m3 (8) 4.1 μg/m3 (18) 50.0
 
April 17, 2021, 7 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.18 ppb (3) 7.8 μg/m3 (8) 3.7 μg/m3 (16) 50.0
 
April 17, 2021, 6 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.18 ppb (3) 7.3 μg/m3 (7) 3.7 μg/m3 (16) 46.0
 
April 17, 2021, 5 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.19 ppb (3) 7.4 μg/m3 (7) 3.8 μg/m3 (16) 43.0
 
April 17, 2021, 4 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.19 ppb (3) 6.9 μg/m3 (7) 3.7 μg/m3 (16) 40.0
 
April 17, 2021, 3 p.m. N/A 0.3 ppb (1) 1.6 ppb (2) N/A N/A 1.0 ppb (2) 40.0 ppb (38) 0.2 ppb (3) 6.6 μg/m3 (7) 3.8 μg/m3 (16) 38.0
 
April 17, 2021, 2 p.m. N/A 0.3 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.19 ppb (3) 6.1 μg/m3 (6) 3.3 μg/m3 (14) 38.0
 
April 17, 2021, 1 p.m. N/A 0.4 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 5.8 μg/m3 (6) 3.4 μg/m3 (15) 36.0
 
April 17, 2021, noon N/A 0.4 ppb (1) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 7.5 μg/m3 (7) 4.3 μg/m3 (18) 28.0
 
April 17, 2021, 11 a.m. N/A 0.1 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 7.1 μg/m3 (7) 4.2 μg/m3 (18) 28.0
 
April 17, 2021, 10 a.m. N/A 0.0 ppb (0) 1.3 ppb (2) N/A N/A 0.0 ppb (0) N/A N/A 7.4 μg/m3 (7) 4.4 μg/m3 (19) 19.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (25) N/A 9.1 μg/m3 (9) 5.7 μg/m3 (24) 25.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.22 ppb (3) 10.2 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
April 17, 2021, 7 a.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A N/A 29.0 ppb (27) 0.21 ppb (3) 8.9 μg/m3 (9) 6.0 μg/m3 (25) 27.0
 
April 17, 2021, 6 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.2 ppb (3) 8.4 μg/m3 (8) 5.4 μg/m3 (23) 31.0
 
April 17, 2021, 5 a.m. N/A 0.0 ppb (0) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.21 ppb (3) 10.3 μg/m3 (10) 6.8 μg/m3 (29) 30.0
 
April 17, 2021, 4 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) N/A N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 13.5 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
April 17, 2021, 3 a.m. N/A 0.1 ppb (1) 4.5 ppb (5) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.25 ppb (3) 17.3 μg/m3 (17) 11.6 μg/m3 (49) 49.0
 
April 17, 2021, 2 a.m. N/A 0.0 ppb (0) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.24 ppb (3) 12.9 μg/m3 (12) 8.5 μg/m3 (36) 36.0
 
April 17, 2021, 1 a.m. N/A 0.0 ppb (0) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.24 ppb (3) 13.3 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
April 17, 2021, midnight N/A 0.1 ppb (1) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.21 ppb (3) 11.2 μg/m3 (11) 5.9 μg/m3 (25) 38.0
 
April 16, 2021, 11 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.19 ppb (3) 8.9 μg/m3 (9) 3.7 μg/m3 (16) 47.0
 
April 16, 2021, 10 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (47) 0.2 ppb (3) 9.9 μg/m3 (10) 5.2 μg/m3 (22) 47.0
 
April 16, 2021, 9 p.m. N/A 0.2 ppb (1) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.2 ppb (3) 11.1 μg/m3 (11) 6.9 μg/m3 (29) 49.0
 
April 16, 2021, 8 p.m. N/A 0.1 ppb (1) 1.6 ppb (2) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.19 ppb (3) 10.7 μg/m3 (10) 6.3 μg/m3 (27) 50.0
 
April 16, 2021, 7 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (50) 0.18 ppb (3) 6.7 μg/m3 (7) 3.5 μg/m3 (15) 50.0
 
April 16, 2021, 6 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (48) 0.18 ppb (3) 8.5 μg/m3 (8) 4.5 μg/m3 (19) 48.0
 
April 16, 2021, 5 p.m. N/A 0.2 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 52.0 ppb (49) 0.2 ppb (3) 12.6 μg/m3 (12) 6.6 μg/m3 (28) 49.0
 
April 16, 2021, 4 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (46) 0.18 ppb (3) 7.0 μg/m3 (7) 3.5 μg/m3 (15) 46.0
 
April 16, 2021, 3 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.19 ppb (3) 5.4 μg/m3 (5) 3.3 μg/m3 (14) 39.0
 
April 16, 2021, 2 p.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 3.8 μg/m3 (4) 2.7 μg/m3 (12) 32.0
 
April 16, 2021, 1 p.m. N/A 0.2 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 4.2 μg/m3 (4) 3.0 μg/m3 (13) 26.0
 
April 16, 2021, noon N/A 0.3 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.2 ppb (3) 6.0 μg/m3 (6) 3.1 μg/m3 (13) 18.0
 
April 16, 2021, 11 a.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) 5.5 μg/m3 (6) 3.2 μg/m3 (14) 16.0
 
April 16, 2021, 10 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 4.1 μg/m3 (4) 2.9 μg/m3 (13) 13.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A 3.9 μg/m3 (4) 2.5 μg/m3 (11) 18.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.2 ppb (3) 3.8 μg/m3 (4) 2.4 μg/m3 (10) 19.0
 
April 16, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 20.0 ppb (19) 0.2 ppb (3) 3.2 μg/m3 (3) 2.3 μg/m3 (10) 19.0
 
April 16, 2021, 6 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.2 ppb (3) 4.8 μg/m3 (5) 2.7 μg/m3 (12) 18.0
 
April 16, 2021, 5 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) 4.3 μg/m3 (4) 3.0 μg/m3 (13) 18.0
 
April 16, 2021, 4 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.21 ppb (3) 5.0 μg/m3 (5) 3.1 μg/m3 (13) 21.0
 
April 16, 2021, 3 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.21 ppb (3) 4.4 μg/m3 (5) 3.0 μg/m3 (13) 23.0
 
April 16, 2021, 2 a.m. N/A 0.2 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) 5.2 μg/m3 (5) 3.4 μg/m3 (15) 22.0
 
April 16, 2021, 1 a.m. N/A 0.4 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) 5.6 μg/m3 (6) 2.9 μg/m3 (13) 22.0
 
April 16, 2021, midnight N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 3.8 μg/m3 (4) 2.4 μg/m3 (10) 24.0
 
April 15, 2021, 11 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 3.5 μg/m3 (4) 2.2 μg/m3 (10) 25.0
 
April 15, 2021, 10 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 2.8 μg/m3 (3) 1.5 μg/m3 (7) 26.0
 
April 15, 2021, 9 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 3.3 μg/m3 (4) 1.5 μg/m3 (7) 25.0
 
April 15, 2021, 8 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 2.3 μg/m3 (3) 1.3 μg/m3 (6) 25.0
 
April 15, 2021, 7 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 2.7 μg/m3 (3) 1.6 μg/m3 (7) 26.0
 
April 15, 2021, 6 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 2.2 μg/m3 (3) 1.4 μg/m3 (6) 25.0
 
April 15, 2021, 5 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 2.6 μg/m3 (3) 1.4 μg/m3 (6) 25.0
 
April 15, 2021, 4 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 1.9 μg/m3 (2) 1.2 μg/m3 (5) 25.0
 
April 15, 2021, 3 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 1.9 μg/m3 (2) 1.1 μg/m3 (5) 25.0
 
April 15, 2021, 2 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 3.3 μg/m3 (4) 1.9 μg/m3 (8) 25.0
 
April 15, 2021, 1 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) 3.9 μg/m3 (4) 2.5 μg/m3 (11) 25.0
 
April 15, 2021, noon N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 2.6 μg/m3 (3) 1.8 μg/m3 (8) 25.0
 
April 15, 2021, 11 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) 2.4 μg/m3 (3) 1.6 μg/m3 (7) 24.0
 
April 15, 2021, 10 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) N/A N/A 1.4 μg/m3 (2) 1.2 μg/m3 (5) 5.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (20) N/A 1.5 μg/m3 (2) 1.1 μg/m3 (5) 20.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.21 ppb (3) 1.7 μg/m3 (2) 1.4 μg/m3 (6) 19.0
 
April 15, 2021, 7 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A N/A 19.0 ppb (18) 0.21 ppb (3) 2.8 μg/m3 (3) 2.3 μg/m3 (10) 18.0
 
April 15, 2021, 6 a.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) 5.3 μg/m3 (5) 3.4 μg/m3 (15) 18.0
 
April 15, 2021, 5 a.m. N/A 0.0 ppb (0) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) 4.8 μg/m3 (5) 3.7 μg/m3 (16) 18.0
 
April 15, 2021, 4 a.m. N/A 0.4 ppb (1) 2.7 ppb (3) N/A N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) 4.9 μg/m3 (5) 3.7 μg/m3 (16) 18.0
 
April 15, 2021, 3 a.m. N/A 0.5 ppb (1) 3.5 ppb (4) N/A N/A 0.0 ppb (0) 18.0 ppb (17) 0.21 ppb (3) 6.6 μg/m3 (7) 4.4 μg/m3 (19) 19.0
 
April 15, 2021, 2 a.m. N/A 0.2 ppb (1) 4.2 ppb (4) N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.22 ppb (3) 6.3 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
April 15, 2021, 1 a.m. N/A 0.3 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (19) 0.2 ppb (3) 4.0 μg/m3 (4) 2.8 μg/m3 (12) 19.0
 
April 15, 2021, midnight N/A 0.3 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) 4.5 μg/m3 (5) 3.1 μg/m3 (13) 21.0
 
April 14, 2021, 11 p.m. N/A 0.1 ppb (1) 1.1 ppb (2) N/A N/A 0.0 ppb (0) 23.0 ppb (22) 0.2 ppb (3) 4.3 μg/m3 (4) 3.2 μg/m3 (14) 22.0
 
April 14, 2021, 10 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) 4.1 μg/m3 (4) 3.0 μg/m3 (13) 23.0
 
April 14, 2021, 9 p.m. N/A 0.2 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) 4.3 μg/m3 (4) 2.8 μg/m3 (12) 23.0
 
April 14, 2021, 8 p.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) 2.9 μg/m3 (3) 2.5 μg/m3 (11) 23.0