ID: 2261

AQSQID: 290950042

Site Name: Blue Ridge I-70

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

Updated: May 6, 2021, 6:47 p.m.

Location: Kansas City (Ashland Ridge), MO

Reporting: True, Located: True

Current AQI: 28.0

Kansas City (Ashland Ridge) MO, US: 39.047911, -94.450513

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 6, 2021, 5 p.m. 4.4 ppb (5) 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
May 6, 2021, 4 p.m. 4.2 ppb (4) 2.3 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 8.7 μg/m3 (37) 37.0
 
May 6, 2021, 3 p.m. 4.9 ppb (5) 2.6 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
May 6, 2021, 2 p.m. 4.5 ppb (5) 2.3 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 5.3 μg/m3 (23) 23.0
 
May 6, 2021, 1 p.m. 5.0 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
May 6, 2021, noon 6.6 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (3) N/A 2.6 μg/m3 (11) 11.0
 
May 6, 2021, 11 a.m. 9.5 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.17 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
May 6, 2021, 10 a.m. 18.5 ppb (18) 2.3 ppb (3) N/A 16.0 ppb (16) N/A N/A N/A 0.21 ppb (3) N/A 4.1 μg/m3 (18) 18.0
 
May 6, 2021, 9 a.m. 17.4 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
May 6, 2021, 8 a.m. 10.4 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.17 ppb (3) N/A 5.8 μg/m3 (25) 25.0
 
May 6, 2021, 7 a.m. 9.5 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 6, 2021, 6 a.m. 6.3 ppb (6) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
May 6, 2021, 5 a.m. 10.0 ppb (10) 2.6 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.19 ppb (3) N/A 11.3 μg/m3 (48) 48.0
 
May 6, 2021, 4 a.m. 28.3 ppb (27) 7.7 ppb (8) N/A 21.0 ppb (20) N/A N/A N/A 0.33 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
May 6, 2021, 3 a.m. 25.2 ppb (24) 8.5 ppb (9) N/A 17.0 ppb (17) N/A N/A N/A 0.35 ppb (4) N/A 8.2 μg/m3 (35) 35.0
 
May 6, 2021, 2 a.m. 40.3 ppb (39) 16.4 ppb (16) N/A 24.0 ppb (23) N/A N/A N/A 0.44 ppb (5) N/A 7.3 μg/m3 (31) 39.0
 
May 6, 2021, 1 a.m. 51.5 ppb (49) 15.2 ppb (15) N/A 36.0 ppb (34) N/A N/A N/A 0.6 ppb (7) N/A 7.4 μg/m3 (31) 49.0
 
May 6, 2021, midnight 29.3 ppb (28) 7.9 ppb (8) N/A 21.0 ppb (20) N/A N/A N/A 0.37 ppb (5) N/A 8.8 μg/m3 (37) 37.0
 
May 5, 2021, 11 p.m. 25.5 ppb (25) 9.7 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.3 ppb (4) N/A 7.7 μg/m3 (33) 33.0
 
May 5, 2021, 10 p.m. 25.1 ppb (24) 7.5 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
May 5, 2021, 9 p.m. 25.8 ppb (25) 9.7 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.28 ppb (4) N/A 7.5 μg/m3 (32) 32.0
 
May 5, 2021, 8 p.m. 12.8 ppb (13) 4.7 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 5, 2021, 7 p.m. 20.4 ppb (20) 9.5 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 7.2 μg/m3 (31) 31.0
 
May 5, 2021, 6 p.m. 20.8 ppb (20) 10.0 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 5, 2021, 5 p.m. 20.2 ppb (20) 9.7 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.24 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
May 5, 2021, 4 p.m. 13.9 ppb (14) 6.3 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.18 ppb (3) N/A 3.4 μg/m3 (15) 15.0
 
May 5, 2021, 3 p.m. 19.5 ppb (19) 8.9 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.22 ppb (3) N/A 3.9 μg/m3 (17) 19.0
 
May 5, 2021, 2 p.m. 29.5 ppb (28) 14.6 ppb (14) N/A 15.0 ppb (15) N/A N/A N/A 0.26 ppb (4) N/A 5.2 μg/m3 (22) 28.0
 
May 5, 2021, 1 p.m. 36.1 ppb (35) 18.7 ppb (18) N/A 17.0 ppb (17) N/A N/A N/A 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
May 5, 2021, noon 90.1 ppb (90) 59.6 ppb (57) N/A 31.0 ppb (30) N/A N/A N/A 0.73 ppb (8) N/A 17.1 μg/m3 (62) 90.0
 
May 5, 2021, 11 a.m. 67.9 ppb (66) 37.9 ppb (36) N/A 30.0 ppb (29) N/A N/A N/A 0.65 ppb (8) N/A 12.5 μg/m3 (52) 66.0
 
May 5, 2021, 10 a.m. 72.4 ppb (71) 42.2 ppb (40) N/A 30.0 ppb (29) N/A N/A N/A 0.58 ppb (7) N/A 12.5 μg/m3 (52) 71.0
 
May 5, 2021, 9 a.m. 56.8 ppb (54) 26.4 ppb (25) N/A 31.0 ppb (30) N/A N/A N/A 0.42 ppb (5) N/A 10.5 μg/m3 (44) 54.0
 
May 5, 2021, 8 a.m. 45.2 ppb (43) 15.8 ppb (15) N/A 30.0 ppb (29) N/A N/A N/A 0.32 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
May 5, 2021, 7 a.m. 65.8 ppb (64) 34.5 ppb (33) N/A 32.0 ppb (31) N/A N/A N/A 0.36 ppb (5) N/A 11.7 μg/m3 (49) 64.0
 
May 5, 2021, 6 a.m. 46.8 ppb (45) 18.0 ppb (17) N/A 29.0 ppb (28) N/A N/A N/A 0.37 ppb (5) N/A 10.7 μg/m3 (45) 45.0
 
May 5, 2021, 5 a.m. 21.4 ppb (21) 1.9 ppb (2) N/A 20.0 ppb (19) N/A N/A N/A 0.27 ppb (4) N/A 10.1 μg/m3 (43) 43.0
 
May 5, 2021, 4 a.m. 14.7 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.21 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
May 5, 2021, 3 a.m. 12.5 ppb (12) 1.0 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.25 ppb (3) N/A 4.1 μg/m3 (18) 18.0
 
May 5, 2021, 2 a.m. 12.3 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 5, 2021, 1 a.m. 5.7 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
May 5, 2021, midnight 4.5 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (2) N/A 5.3 μg/m3 (23) 23.0
 
May 4, 2021, 11 p.m. 3.2 ppb (4) 1.7 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 2.5 μg/m3 (11) 11.0
 
May 4, 2021, 10 p.m. 3.2 ppb (4) 1.8 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 4, 2021, 9 p.m. 3.4 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 1.7 μg/m3 (8) 8.0
 
May 4, 2021, 8 p.m. 2.8 ppb (3) 1.8 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.12 ppb (2) N/A 1.3 μg/m3 (6) 6.0
 
May 4, 2021, 7 p.m. 3.2 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) N/A 4.4 μg/m3 (19) 19.0
 
May 4, 2021, 6 p.m. 4.2 ppb (4) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
May 4, 2021, 5 p.m. 5.6 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (2) N/A 0.4 μg/m3 (2) 6.0
 
May 4, 2021, 4 p.m. 4.3 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 1.5 μg/m3 (7) 7.0
 
May 4, 2021, 3 p.m. 3.6 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 3.4 μg/m3 (15) 15.0
 
May 4, 2021, 2 p.m. 4.4 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 4, 2021, 1 p.m. 4.1 ppb (4) 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
May 4, 2021, noon 3.8 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 4.4 μg/m3 (19) 19.0
 
May 4, 2021, 11 a.m. 3.6 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 4.4 μg/m3 (19) 19.0
 
May 4, 2021, 10 a.m. 3.4 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 2.4 μg/m3 (10) 10.0
 
May 4, 2021, 9 a.m. 3.6 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 2.7 μg/m3 (12) 12.0
 
May 4, 2021, 8 a.m. 3.8 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
May 4, 2021, 7 a.m. 3.6 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 3.7 μg/m3 (16) 16.0
 
May 4, 2021, 6 a.m. 3.9 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
May 4, 2021, 5 a.m. 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
May 4, 2021, 4 a.m. 11.4 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.22 ppb (3) N/A 10.6 μg/m3 (45) 45.0
 
May 4, 2021, 3 a.m. 21.3 ppb (21) 4.2 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.35 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
May 4, 2021, 2 a.m. 8.3 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
May 4, 2021, 1 a.m. 6.5 ppb (7) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (3) N/A 8.9 μg/m3 (38) 38.0
 
May 4, 2021, midnight 5.5 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
May 3, 2021, 11 p.m. 5.0 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 12.8 μg/m3 (53) 53.0
 
May 3, 2021, 10 p.m. 5.5 ppb (6) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 14.0 μg/m3 (55) 55.0
 
May 3, 2021, 9 p.m. 5.6 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
May 3, 2021, 8 p.m. 6.2 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
May 3, 2021, 7 p.m. 6.3 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
May 3, 2021, 6 p.m. 6.4 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (3) N/A 3.6 μg/m3 (16) 16.0
 
May 3, 2021, 5 p.m. 5.9 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
May 3, 2021, 4 p.m. 12.5 ppb (12) 6.1 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
May 3, 2021, 3 p.m. 14.9 ppb (15) 8.0 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
May 3, 2021, 2 p.m. 14.0 ppb (14) 7.1 ppb (7) N/A 7.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
May 3, 2021, 1 p.m. 18.6 ppb (18) 10.6 ppb (10) N/A 8.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
May 3, 2021, noon 19.9 ppb (19) 11.3 ppb (11) N/A 9.0 ppb (9) N/A N/A N/A 0.29 ppb (4) N/A 3.3 μg/m3 (14) 19.0
 
May 3, 2021, 11 a.m. 20.4 ppb (20) 13.0 ppb (13) N/A 7.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 4.8 μg/m3 (20) 20.0
 
May 3, 2021, 10 a.m. 14.9 ppb (15) 8.4 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) N/A 7.5 μg/m3 (32) 32.0
 
May 3, 2021, 9 a.m. 10.4 ppb (10) 5.5 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 3, 2021, 8 a.m. 7.3 ppb (7) 3.5 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
May 3, 2021, 7 a.m. 6.0 ppb (6) 3.3 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
May 3, 2021, 6 a.m. 8.1 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 3, 2021, 5 a.m. 5.9 ppb (6) 3.2 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
May 3, 2021, 4 a.m. 9.3 ppb (9) 5.6 ppb (6) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 3, 2021, 3 a.m. 18.2 ppb (18) 9.4 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 10.4 μg/m3 (44) 44.0
 
May 3, 2021, 2 a.m. 19.0 ppb (18) 9.5 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.39 ppb (5) N/A 12.6 μg/m3 (53) 53.0
 
May 3, 2021, 1 a.m. 23.7 ppb (23) 12.8 ppb (13) N/A 11.0 ppb (11) N/A N/A N/A 0.4 ppb (5) N/A 10.9 μg/m3 (46) 46.0
 
May 3, 2021, midnight 22.9 ppb (22) 12.4 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A 0.46 ppb (6) N/A 16.7 μg/m3 (61) 61.0
 
May 2, 2021, 11 p.m. 19.0 ppb (18) 10.5 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A 0.37 ppb (5) N/A 11.9 μg/m3 (50) 50.0
 
May 2, 2021, 10 p.m. 20.5 ppb (20) 12.2 ppb (12) N/A 8.0 ppb (8) N/A N/A N/A 0.41 ppb (5) N/A 8.3 μg/m3 (35) 35.0
 
May 2, 2021, 9 p.m. 17.4 ppb (17) 10.0 ppb (10) N/A 7.0 ppb (7) N/A N/A N/A 0.36 ppb (5) N/A 9.7 μg/m3 (41) 41.0
 
May 2, 2021, 8 p.m. 16.3 ppb (16) 10.1 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 7.8 μg/m3 (33) 33.0
 
May 2, 2021, 7 p.m. 14.6 ppb (14) 9.2 ppb (9) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 8.9 μg/m3 (38) 38.0
 
May 2, 2021, 6 p.m. 15.0 ppb (15) 8.7 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
May 2, 2021, 5 p.m. 14.4 ppb (14) 9.1 ppb (9) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
May 2, 2021, 4 p.m. 13.6 ppb (13) 8.0 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (4) N/A 7.7 μg/m3 (33) 33.0
 
May 2, 2021, 3 p.m. 8.1 ppb (8) 4.8 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
May 2, 2021, 2 p.m. 8.7 ppb (9) 5.1 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
May 2, 2021, 1 p.m. 8.6 ppb (9) 4.9 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
May 2, 2021, noon 10.2 ppb (10) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 10.9 μg/m3 (46) 46.0
 
May 2, 2021, 11 a.m. 7.5 ppb (8) 3.2 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
May 2, 2021, 10 a.m. 4.8 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 7.3 μg/m3 (31) 31.0
 
May 2, 2021, 9 a.m. 5.1 ppb (5) 2.6 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
May 2, 2021, 8 a.m. 6.2 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
May 2, 2021, 7 a.m. 5.5 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
May 2, 2021, 6 a.m. 7.2 ppb (7) 3.5 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 2, 2021, 5 a.m. 8.3 ppb (8) 3.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (3) N/A 8.2 μg/m3 (35) 35.0
 
May 2, 2021, 4 a.m. 8.9 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
May 2, 2021, 3 a.m. 7.4 ppb (7) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
May 2, 2021, 2 a.m. 12.3 ppb (12) 5.8 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
May 2, 2021, 1 a.m. 13.1 ppb (13) 5.5 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 7.2 μg/m3 (31) 31.0
 
May 2, 2021, midnight 17.8 ppb (17) 6.8 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.3 ppb (4) N/A 8.5 μg/m3 (36) 36.0
 
May 1, 2021, 11 p.m. 13.7 ppb (13) 5.8 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
May 1, 2021, 10 p.m. 13.6 ppb (13) 6.1 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
May 1, 2021, 9 p.m. 11.7 ppb (12) 5.4 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
May 1, 2021, 8 p.m. 12.6 ppb (12) 5.9 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
May 1, 2021, 7 p.m. 12.1 ppb (12) 6.4 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
May 1, 2021, 6 p.m. 10.1 ppb (10) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 6.5 μg/m3 (28) 28.0
 
May 1, 2021, 5 p.m. 10.9 ppb (11) 5.2 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
May 1, 2021, 4 p.m. 9.1 ppb (9) 4.5 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
May 1, 2021, 3 p.m. 11.3 ppb (11) 5.4 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
May 1, 2021, 2 p.m. 12.2 ppb (12) 5.7 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
May 1, 2021, 1 p.m. 13.7 ppb (13) 5.4 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 3.5 μg/m3 (15) 15.0
 
May 1, 2021, noon 15.8 ppb (15) 5.3 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
May 1, 2021, 11 a.m. 12.7 ppb (12) 3.7 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 5.6 μg/m3 (24) 24.0
 
May 1, 2021, 10 a.m. 8.4 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
May 1, 2021, 9 a.m. 7.6 ppb (8) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.15 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
May 1, 2021, 8 a.m. 7.7 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
May 1, 2021, 7 a.m. 7.9 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
May 1, 2021, 6 a.m. 12.0 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.21 ppb (3) N/A 7.2 μg/m3 (31) 31.0
 
May 1, 2021, 5 a.m. 12.6 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
May 1, 2021, 4 a.m. 20.5 ppb (20) 5.0 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.34 ppb (4) N/A 8.5 μg/m3 (36) 36.0
 
May 1, 2021, 3 a.m. 25.5 ppb (25) 6.9 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) N/A 7.7 μg/m3 (33) 33.0
 
May 1, 2021, 2 a.m. 29.8 ppb (29) 7.3 ppb (7) N/A 23.0 ppb (22) N/A N/A N/A 0.41 ppb (5) N/A 8.1 μg/m3 (34) 34.0
 
May 1, 2021, 1 a.m. 28.1 ppb (27) 6.3 ppb (6) N/A 22.0 ppb (21) N/A N/A N/A 0.38 ppb (5) N/A 8.6 μg/m3 (36) 36.0
 
May 1, 2021, midnight 25.1 ppb (24) 8.1 ppb (8) N/A 17.0 ppb (17) N/A N/A N/A 0.35 ppb (4) N/A 10.3 μg/m3 (43) 43.0
 
April 30, 2021, 11 p.m. 18.5 ppb (18) 6.7 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.31 ppb (4) N/A 5.2 μg/m3 (22) 22.0
 
April 30, 2021, 10 p.m. 23.3 ppb (22) 9.8 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A 0.29 ppb (4) N/A 7.3 μg/m3 (31) 31.0
 
April 30, 2021, 9 p.m. 22.6 ppb (22) 9.6 ppb (10) N/A 13.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 7.5 μg/m3 (32) 32.0
 
April 30, 2021, 8 p.m. 23.7 ppb (23) 10.2 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 23.0
 
April 30, 2021, 7 p.m. 21.1 ppb (20) 9.0 ppb (9) N/A 12.0 ppb (12) N/A N/A N/A 0.26 ppb (4) N/A 5.5 μg/m3 (23) 23.0
 
April 30, 2021, 6 p.m. 22.5 ppb (22) 10.0 ppb (10) N/A 13.0 ppb (13) N/A N/A N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
April 30, 2021, 5 p.m. 16.1 ppb (16) 7.3 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
April 30, 2021, 4 p.m. 22.3 ppb (22) 10.1 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.24 ppb (3) N/A 4.8 μg/m3 (20) 22.0
 
April 30, 2021, 3 p.m. 31.9 ppb (31) 15.0 ppb (15) N/A 17.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 8.5 μg/m3 (36) 36.0
 
April 30, 2021, 2 p.m. 35.6 ppb (34) 17.5 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A 0.39 ppb (5) N/A 9.6 μg/m3 (40) 40.0
 
April 30, 2021, 1 p.m. 56.9 ppb (55) 32.4 ppb (31) N/A 25.0 ppb (24) N/A N/A N/A 0.49 ppb (6) N/A 12.5 μg/m3 (52) 55.0
 
April 30, 2021, noon 72.7 ppb (71) 45.1 ppb (43) N/A 28.0 ppb (27) N/A N/A N/A 0.63 ppb (7) N/A 13.0 μg/m3 (53) 71.0
 
April 30, 2021, 11 a.m. 78.5 ppb (78) 48.1 ppb (46) N/A 31.0 ppb (30) N/A N/A N/A 0.66 ppb (8) N/A 9.9 μg/m3 (42) 78.0
 
April 30, 2021, 10 a.m. 40.0 ppb (38) 11.1 ppb (11) N/A 29.0 ppb (28) N/A N/A N/A 0.44 ppb (5) N/A 10.4 μg/m3 (44) 44.0
 
April 30, 2021, 9 a.m. 24.1 ppb (23) 5.0 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.34 ppb (4) N/A 7.9 μg/m3 (33) 33.0
 
April 30, 2021, 8 a.m. 29.6 ppb (28) 6.9 ppb (7) N/A 23.0 ppb (22) N/A N/A N/A 0.32 ppb (4) N/A 10.1 μg/m3 (43) 43.0
 
April 30, 2021, 7 a.m. 30.3 ppb (29) 7.0 ppb (7) N/A 23.0 ppb (22) N/A N/A N/A 0.33 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
April 30, 2021, 6 a.m. 12.3 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 10.4 μg/m3 (44) 44.0
 
April 30, 2021, 5 a.m. 13.9 ppb (14) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.25 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
April 30, 2021, 4 a.m. 13.0 ppb (13) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.19 ppb (3) N/A 8.4 μg/m3 (36) 36.0
 
April 30, 2021, 3 a.m. 17.0 ppb (17) 1.7 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.26 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
April 30, 2021, 2 a.m. 16.7 ppb (16) 1.7 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.27 ppb (4) N/A 9.2 μg/m3 (39) 39.0
 
April 30, 2021, 1 a.m. 35.5 ppb (34) 4.1 ppb (4) N/A 31.0 ppb (30) N/A N/A N/A 0.6 ppb (7) N/A 25.6 μg/m3 (80) 80.0
 
April 30, 2021, midnight 4.6 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 12.5 μg/m3 (52) 52.0
 
April 29, 2021, 11 p.m. 4.0 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
April 29, 2021, 10 p.m. 4.1 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) N/A 7.2 μg/m3 (31) 31.0
 
April 29, 2021, 9 p.m. 3.3 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
April 29, 2021, 8 p.m. 3.6 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 10.1 μg/m3 (43) 43.0
 
April 29, 2021, 7 p.m. 3.6 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
April 29, 2021, 6 p.m. 3.4 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) N/A 6.8 μg/m3 (29) 29.0