AQSQID: 320311005

Site Name: Sparks

Location: Sparks (4th St), NV

Reporting: True, Located: True

Current AQI: 34.0

Sparks (4th St) NV, US: 39.54092, -119.746764

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 34.0
 
March 30, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 36.0
 
March 30, 2020, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.1 ppb (1) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 38.0
 
March 29, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 39.0
 
March 29, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) 6.0 μg/m3 (5) 5.0 μg/m3 (21) 38.0
 
March 29, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 37.0
 
March 29, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 6.0 μg/m3 (5) 6.0 μg/m3 (25) 35.0
 
March 29, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 34.0
 
March 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 32.0
 
March 29, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 33.0
 
March 29, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 31.0
 
March 29, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 24.0
 
March 29, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 12.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.2 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 12.0
 
March 29, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.2 ppb (2) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 18.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 18.0
 
March 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.2 ppb (2) 4.0 μg/m3 (4) 1.0 μg/m3 (4) 21.0
 
March 29, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 23.0
 
March 29, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 22.0
 
March 29, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 26.0
 
March 29, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 29.0
 
March 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 12.0 μg/m3 (11) 2.0 μg/m3 (8) 28.0
 
March 29, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 28.0
 
March 29, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 28.0
 
March 29, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 32.0
 
March 29, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 35.0
 
March 28, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 38.0
 
March 28, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.2 ppb (2) 8.0 μg/m3 (7) 7.0 μg/m3 (29) 38.0
 
March 28, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.2 ppb (2) 6.0 μg/m3 (5) 7.0 μg/m3 (29) 38.0
 
March 28, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 37.0
 
March 28, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 35.0
 
March 28, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.2 ppb (2) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 33.0
 
March 28, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.3 ppb (3) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.3 ppb (3) 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.5 ppb (6) 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
March 28, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.5 ppb (6) 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
March 28, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.4 ppb (4) 13.0 μg/m3 (12) 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.4 ppb (4) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.3 ppb (3) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.3 ppb (3) 15.0 μg/m3 (14) 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 27.0
 
March 28, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 32.0
 
March 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 32.0
 
March 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 32.0
 
March 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 32.0
 
March 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 32.0
 
March 28, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.2 ppb (2) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 33.0
 
March 28, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 34.0
 
March 27, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 35.0
 
March 27, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 35.0
 
March 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 35.0
 
March 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 35.0
 
March 27, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 34.0
 
March 27, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 28.0
 
March 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.3 ppb (3) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.4 ppb (4) 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.6 ppb (7) 30.0 μg/m3 (27) 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.3 ppb (14) 44.0 μg/m3 (40) 14.0 μg/m3 (54) 54.0
 
March 27, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 1.0 ppb (11) 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
March 27, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
March 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
March 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 25.0 μg/m3 (23) 18.0 μg/m3 (63) 63.0
 
March 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 26.0 μg/m3 (24) 18.0 μg/m3 (63) 63.0
 
March 27, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.9 ppb (10) 33.0 μg/m3 (30) 19.0 μg/m3 (65) 65.0
 
March 27, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.8 ppb (9) 41.0 μg/m3 (37) 20.0 μg/m3 (67) 67.0
 
March 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 1.0 ppb (11) 39.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.6 ppb (7) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.4 ppb (4) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 23.0
 
March 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 29.0
 
March 27, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 30.0
 
March 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 30.0
 
March 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 28.0
 
March 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 28.0
 
March 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 27.0
 
March 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 29.0
 
March 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 29.0
 
March 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 26.0
 
March 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.3 ppb (3) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 24.0
 
March 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 8.0 μg/m3 (7) -1.0 μg/m3 (0) 20.0
 
March 26, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.4 ppb (4) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 14.0
 
March 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.2 ppb (2) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
March 26, 2020, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 6.0 μg/m3 (5) 5.0 μg/m3 (21) 23.0
 
March 26, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 18.0
 
March 26, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 16.0
 
March 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 22.0
 
March 26, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 29.0
 
March 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.2 ppb (2) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 31.0
 
March 26, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 4.0 μg/m3 (4) 3.0 μg/m3 (12) 32.0
 
March 26, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 32.0
 
March 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 32.0
 
March 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 2.0 μg/m3 (2) -3.0 μg/m3 (0) 32.0
 
March 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 5.0 μg/m3 (5) -2.0 μg/m3 (0) 32.0
 
March 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 35.0
 
March 26, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 35.0
 
March 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 12.0 μg/m3 (11) 0.0 μg/m3 (0) 35.0
 
March 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.2 ppb (2) 7.0 μg/m3 (6) 0.0 μg/m3 (0) 36.0
 
March 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 35.0
 
March 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 35.0
 
March 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 35.0
 
March 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.2 ppb (2) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 36.0
 
March 25, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 35.0
 
March 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.2 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 32.0
 
March 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 24.0
 
March 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.3 ppb (3) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 21.0
 
March 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 29.0
 
March 25, 2020, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 24.0
 
March 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.2 ppb (2) 5.0 μg/m3 (5) 0.0 μg/m3 (0) 28.0
 
March 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 32.0
 
March 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 3.0 μg/m3 (3) 1.0 μg/m3 (4) 32.0
 
March 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 5.0 μg/m3 (5) 4.0 μg/m3 (17) 28.0
 
March 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) 3.0 μg/m3 (3) 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 3.0 μg/m3 (3) 3.0 μg/m3 (12) 25.0
 
March 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.2 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 27.0
 
March 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 3.0 μg/m3 (3) 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) 2.0 μg/m3 (2) 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 5.0 μg/m3 (5) 1.0 μg/m3 (4) 32.0
 
March 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 34.0
 
March 25, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 35.0
 
March 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) 17.0 μg/m3 (15) 0.0 μg/m3 (0) 37.0
 
March 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 10.0 μg/m3 (9) 0.0 μg/m3 (0) 35.0
 
March 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (16) 2.0 μg/m3 (8) 16.0
 
March 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 36.0
 
March 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 35.0
 
March 24, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 35.0
 
March 24, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 25.0 μg/m3 (23) 6.0 μg/m3 (25) 35.0
 
March 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.2 ppb (2) 30.0 μg/m3 (27) 2.0 μg/m3 (8) 34.0
 
March 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 28.0
 
March 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.2 ppb (2) 17.0 μg/m3 (15) 2.0 μg/m3 (8) 25.0
 
March 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.2 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 25.0
 
March 24, 2020, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 31.0
 
March 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 16.0
 
March 24, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.2 ppb (2) 4.0 μg/m3 (4) 0.0 μg/m3 (0) 20.0
 
March 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) 4.0 μg/m3 (4) 2.0 μg/m3 (8) 26.0
 
March 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 26.0
 
March 24, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 26.0
 
March 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 23.0
 
March 24, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.2 ppb (2) 9.0 μg/m3 (8) 3.0 μg/m3 (12) 23.0
 
March 24, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 32.0
 
March 24, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.2 ppb (2) 9.0 μg/m3 (8) 1.0 μg/m3 (4) 29.0
 
March 24, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.2 ppb (2) 13.0 μg/m3 (12) 1.0 μg/m3 (4) 30.0
 
March 24, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.2 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 32.0
 
March 24, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 34.0
 
March 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 32.0
 
March 23, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 49.0 μg/m3 (45) 5.0 μg/m3 (21) 45.0
 
March 23, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.1 ppb (1) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 32.0
 
March 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
March 23, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 35.0
 
March 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 28.0 μg/m3 (25) 7.0 μg/m3 (29) 34.0
 
March 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.3 ppb (3) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.3 ppb (3) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
March 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.4 ppb (4) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.9 ppb (10) 43.0 μg/m3 (39) 6.0 μg/m3 (25) 39.0
 
March 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.7 ppb (8) 43.0 μg/m3 (39) 5.0 μg/m3 (21) 39.0
 
March 23, 2020, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.6 ppb (7) 30.0 μg/m3 (27) 8.0 μg/m3 (33) 33.0
 
March 23, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.5 ppb (6) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
March 23, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) 0.4 ppb (4) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
March 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) 0.5 ppb (6) 38.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
March 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.2 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.4 ppb (4) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
March 23, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 22.0
 
March 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.1 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
March 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 32.0
 
March 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 34.0